WO2017038519A1 - Lcd device - Google Patents

Lcd device Download PDF

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Publication number
WO2017038519A1
WO2017038519A1 PCT/JP2016/074320 JP2016074320W WO2017038519A1 WO 2017038519 A1 WO2017038519 A1 WO 2017038519A1 JP 2016074320 W JP2016074320 W JP 2016074320W WO 2017038519 A1 WO2017038519 A1 WO 2017038519A1
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WO
WIPO (PCT)
Prior art keywords
liquid crystal
panel
display device
backlight
crystal display
Prior art date
Application number
PCT/JP2016/074320
Other languages
French (fr)
Japanese (ja)
Inventor
台信　英樹
Original Assignee
シャープ株式会社
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Filing date
Publication date
Application filed by シャープ株式会社 filed Critical シャープ株式会社
Publication of WO2017038519A1 publication Critical patent/WO2017038519A1/en

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    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
    • G09F9/00—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements

Definitions

  • the present invention relates to a liquid crystal display device. More specifically, the present invention relates to a liquid crystal display device suitable for a display device requiring a narrow frame.
  • the following techniques are disclosed as techniques relating to the fixing method of various members in the display device.
  • a display device having a display panel, a transparent front plate provided on the front side of the display panel, and an adhesive member provided between the display panel and the transparent front plate, wherein the transparent front plate is formed on the display panel only by the adhesive member
  • a fixed display device is disclosed (for example, refer to Patent Document 1).
  • a display panel a front member that is provided on the front surface of the display panel and covers at least the periphery of the display panel, a back member that is provided on the back surface of the display panel and covers at least the back surface of the display panel, and a back member and a front member And a bonding device that covers the outer peripheral portion of the display panel is disclosed (for example, see Patent Document 2).
  • the transparent body and the plate-like body are provided on the display panel.
  • Disclosed is a display device in which a flow-preventing member is installed in a plate-like body so that the second adhesive material does not enter the gap between the display panel and the plate-like body, and is bonded and fixed by a second adhesive material at an overlapping portion on the outside (For example, see Patent Document 3).
  • a photocurable resin composition is interposed between the image display unit and the display side panel having the frame and the protection unit so as to extend over the image display unit and the frame, and photocured to form a cured resin layer.
  • the photocurable resin composition is interposed between the display side panel and the protection portion.
  • a liquid crystal panel a light source unit that provides light to the liquid crystal panel, a light source unit coupled to one side and formed of a glass material, and at least one surface of one surface or the other surface of the light guide unit
  • a display device includes a reflection portion formed on the liquid crystal panel and an adhesive member that is applied to one surface of the light guide portion that faces the liquid crystal panel and couples the liquid crystal panel and the light guide portion (see, for example, Patent Document 5). .)
  • a liquid crystal display device comprising a liquid crystal display panel in which a pair of transparent substrates are disposed to face each other via a liquid crystal layer, and a backlight unit that is disposed on the back surface of the liquid crystal display panel and emits backlight light.
  • a liquid crystal display device has a plate-like member facing the side wall surface of the panel and the side wall surface of the backlight unit, and the plate-like member is fixed to the side wall surface of the liquid crystal display panel and the side wall surface of the backlight unit.
  • JP 2014-130194 A JP 2012-242805 A JP 2009-122655 A JP 2009-186156 A JP 2014-219655 A Japanese Patent Application Laid-Open No. 2014-126585
  • FIG. 26 is a schematic cross-sectional view of a liquid crystal display device according to Comparative Example 1 studied by the present inventors.
  • the liquid crystal display device according to the comparative example 1 includes a liquid crystal panel 110, a backlight 120 disposed behind the liquid crystal panel 110, and an adhesive member for fixing the liquid crystal panel 110 to the backlight 120. 130 (for example, double-sided tape).
  • the backlight 120 includes a reflection sheet (not shown), a light guide plate 121, an optical sheet 122 on the light guide plate 121, and a backlight case 123 that accommodates these.
  • the liquid crystal panel 110 is fixed to the backlight case 123 by the adhesive member 130.
  • the length of the adhesive member 130 is required to some extent, and the width of the frame area (image non-display area) 102 around the image display area 101 is increased. This hinders the narrowing of the frame of the liquid crystal display device according to the comparative example 1.
  • Patent Document 1 does not disclose a method of fixing the liquid crystal panel and the backlight.
  • the first adhesive is provided in the non-display area of the outer periphery of the display panel. Further, the outer frame member is screwed to the display panel holding member. Therefore, these become a bottleneck and there is a limit to narrowing the frame.
  • the spacer is arranged to define the formation region of the bonding portion.
  • the frame region corresponds to the size of the spacer. Will become bigger.
  • a flow prevention member such as an adhesive is disposed so that the second adhesive material does not enter the gap between the liquid crystal panel and the plate-like body.
  • the frame area becomes larger by that amount.
  • Patent Document 4 does not disclose a method of fixing the liquid crystal panel and the backlight, but discloses a method of fixing the protection unit to the display side panel. Moreover, if a sealing film is provided, a frame area will become large by the magnitude
  • the width of the adhesive member is required to some extent in order to maintain the adhesive force.
  • the frame area becomes larger by the size.
  • a plate-like member is fixed to the side wall surface of the liquid crystal display panel and the side wall surface of the mold member that surrounds the outer periphery of the light guide plate and the optical sheet, thereby making the liquid crystal display panel a backlight unit. It is fixed. Therefore, the frame area becomes larger by the size of the mold member.
  • the present invention has been made in view of the above-described present situation, and an object thereof is to provide a liquid crystal display device capable of narrowing the frame.
  • One embodiment of the present invention is a liquid crystal display device including a liquid crystal panel and a backlight
  • the liquid crystal panel includes an image display unit and a frame portion around the image display unit
  • the backlight includes an optical sheet located behind the liquid crystal panel, a light guide plate located behind the optical sheet, and a backlight case.
  • the backlight case is a box with an open surface on the viewer side, and includes a flat plate portion and a side wall portion rising from the flat plate portion, The optical sheet and the light guide plate are accommodated in the backlight case,
  • a panel holding part formed in a shape capable of fitting the frame part is provided, A liquid crystal display device in which the frame portion is fitted into the panel holding portion may be used.
  • this liquid crystal display device is also referred to as a first liquid crystal display device according to the present invention.
  • the first liquid crystal display device may further include an elastic buffer member between the liquid crystal panel and the backlight case.
  • the liquid crystal panel may be in contact with the optical sheet.
  • the panel holding part may include a linear ridge provided along the viewer side of the frame part.
  • the ridge portion is a first ridge portion
  • the panel holding portion includes a linear second ridge provided along the rear side of the frame portion,
  • a plurality of protrusions are provided on the frame side surface of each of the first and second ridges,
  • the frame portion may be supported by each vertex of the plurality of protrusions.
  • the panel holding portion includes a linear concave stripe portion provided along the frame portion,
  • the frame part may be fitted into the concave strip part.
  • a liquid crystal display device comprising a liquid crystal panel, a backlight, and a panel fixing member
  • the liquid crystal panel includes an image display unit and a frame portion around the image display unit
  • the backlight includes an optical sheet located behind the liquid crystal panel, a light guide plate located behind the optical sheet, and a backlight case.
  • the backlight case is a box with an open surface on the viewer side, and includes a flat plate portion and a side wall portion rising from the flat plate portion, The optical sheet and the light guide plate are accommodated in the backlight case
  • the panel fixing member includes a panel pressing portion that presses the frame portion, and is fixed to the backlight case.
  • the frame portion may be a liquid crystal display device that is sandwiched between the panel pressing portion and the side wall portion.
  • this liquid crystal display device is also referred to as a second liquid crystal display device according to the present invention.
  • the second liquid crystal display device further includes a buffer member having elasticity between the liquid crystal panel and the backlight case, and between the liquid crystal panel and the panel fixing member. Also good.
  • the liquid crystal panel may be in contact with the optical sheet.
  • Still another embodiment of the present invention is a liquid crystal display device including a liquid crystal panel, a backlight, and a bezel
  • the liquid crystal panel includes an image display unit and a frame portion around the image display unit
  • the backlight includes an optical sheet located behind the liquid crystal panel, a light guide plate located behind the optical sheet, and a backlight case.
  • the backlight case is a box with an open surface on the viewer side, and includes a flat plate portion and a side wall portion rising from the flat plate portion, The optical sheet and the light guide plate are accommodated in the backlight case
  • the bezel includes a panel holding portion formed in a shape capable of fitting the frame portion, The frame portion is fitted into the panel holding portion,
  • the bezel may be a liquid crystal display device fixed to the side wall portion.
  • this liquid crystal display device is also referred to as a third liquid crystal display device according to the present invention.
  • the bezel further includes a case fixing part connected to the panel holding part,
  • the case fixing part may be arranged along the side wall part and fixed to the side wall part.
  • the third liquid crystal display device further comprises an adhesive member,
  • the bezel may be disposed on the side wall portion and fixed to the side wall portion by the adhesive member.
  • the third liquid crystal display device according to the present invention may further include an elastic buffer member between the liquid crystal panel and the bezel.
  • the liquid crystal panel may be in contact with the optical sheet.
  • a liquid crystal display device capable of narrowing a frame can be realized.
  • FIG. 1 is a schematic plan view of a liquid crystal display device according to Embodiment 1.
  • FIG. FIG. 2 is a schematic cross-sectional view of the liquid crystal display device according to Embodiment 1, showing a cross section taken along line A1-A2 in FIG. It is a cross-sectional schematic diagram of the liquid crystal display device according to the first embodiment, and shows an enlarged portion including a panel holding portion and a frame portion.
  • FIG. 3 is a schematic cross-sectional view of the liquid crystal display device according to Embodiment 1, showing a cross section along line B1-B2 in FIG. 6 is a schematic cross-sectional view of a liquid crystal display device according to a first modification of Embodiment 1.
  • FIG. 1 is a schematic plan view of a liquid crystal display device according to Embodiment 1.
  • FIG. FIG. 2 is a schematic cross-sectional view of the liquid crystal display device according to Embodiment 1, showing a cross section taken along line A1-A2 in FIG. It is a cross
  • FIG. 10 is a schematic cross-sectional view of a liquid crystal display device according to a second modification example of Embodiment 1, and shows a cross section taken along line C1-C2 in FIG.
  • FIG. 10 is a schematic cross-sectional schematic diagram of the liquid crystal display device which concerns on the 3rd modification of Embodiment 1, and expands and shows the part containing a panel holding
  • FIG. 10 is a schematic cross-sectional view of a liquid crystal display device according to a second modification example of Embodiment 1, and shows a cross section taken along line C1-C2 in FIG.
  • FIG. 10 is a schematic cross-sectional view of a liquid crystal display device according to a third modification of Embodiment 1, and shows a cross section taken along line D1-D2 in FIG. 6 is a schematic cross-sectional view of a liquid crystal display device according to a fourth modification of Embodiment 1.
  • FIG. 10 is a schematic cross-sectional view of a liquid crystal display device according to a fifth modification of Embodiment 1.
  • FIG. 7 is a schematic cross-sectional view of a liquid crystal display device according to a sixth modification of Embodiment 1.
  • FIG. FIG. 10 is a schematic cross-sectional view of a liquid crystal display device according to a seventh modification example of Embodiment 1.
  • FIG. 12 is a schematic cross-sectional view of a liquid crystal display device according to an eighth modification of Embodiment 1.
  • FIG. 6 is a schematic cross-sectional view of a liquid crystal display device according to Embodiment 2.
  • FIG. 6 is a schematic cross-sectional view of a liquid crystal display device according to a first modification of Embodiment 2.
  • FIG. 10 is a schematic cross-sectional view of a liquid crystal display device according to a second modification example of Embodiment 2.
  • 12 is a schematic cross-sectional view of a liquid crystal display device according to a third modification of Embodiment 2.
  • FIG. 12 is a schematic cross-sectional view of a liquid crystal display device according to a fourth modification of Embodiment 2.
  • FIG. 6 is a schematic cross-sectional view of a liquid crystal display device according to Embodiment 2.
  • FIG. 6 is a schematic cross-sectional view of a liquid crystal display device according to Embodiment 3.
  • FIG. 6 is a schematic cross-sectional view of a liquid crystal display device according to a first modification of Embodiment 3.
  • FIG. 10 is a schematic cross-sectional view of a liquid crystal display device according to a second modification example of Embodiment 3.
  • 12 is a schematic cross-sectional view of a liquid crystal display device according to a third modification of Embodiment 3.
  • FIG. 12 is a schematic cross-sectional view of a liquid crystal display device according to a fourth modification of Embodiment 3.
  • FIG. FIG. 10 is a schematic cross-sectional view of a liquid crystal display device according to a fifth modification example of Embodiment 3. It is a cross-sectional schematic diagram of the liquid crystal display device which concerns on the comparative form 1 which this inventor examined.
  • FIG. 1 is a schematic plan view of the liquid crystal display device according to the first embodiment.
  • the liquid crystal display device 100 according to the first embodiment includes a liquid crystal panel 10 and has an image display region 1 having an arbitrary shape.
  • the planar shapes of the external shapes of the liquid crystal display device 100 and the liquid crystal panel 10 are designed to be substantially the same as the image display region 1.
  • the liquid crystal display device 100 may be a free-form display (FFD) in which the shapes of the image display area 1 and the liquid crystal panel 10 are shapes other than a rectangle and a square.
  • the display whose each shape of the liquid crystal panel 10 is a rectangle or a square may be sufficient.
  • FFD free-form display
  • These shapes are not particularly limited, and may be, for example, a shape in which two adjacent corners of a rectangle are rounded as shown in FIG. 1, a rectangle, a square, a circle or an ellipse, or other complex shapes.
  • the image display area 1 is an area where an image is displayed (active area), and a frame area (image non-display area) 2 where no image is displayed is provided around the image display area 1.
  • the liquid crystal panel 10 includes an image display unit 11 corresponding to the image display region 1 and a frame portion (image display unit) 12 corresponding to the frame region 2.
  • the image display unit 11 is provided with a plurality of pixels (not shown) in a matrix.
  • the frame portion 12 is provided in a frame shape so as to surround the image display portion 11, and the frame portion 12 is provided with a member such as a seal material (not shown).
  • the liquid crystal display device 100 further includes a backlight 20 that is disposed so as to overlap the liquid crystal panel 10 and has substantially the same planar shape as the liquid crystal panel 10.
  • the liquid crystal display device 100 includes various general circuits and electronic components in addition to these members.
  • the liquid crystal panel 10 includes, for example, a TFT substrate (not shown), a CF substrate (not shown) facing the TFT substrate, and a liquid crystal layer (not shown) provided between these two substrates. have.
  • a polarizing plate that transmits polarized light in a specific direction is provided on the surface of each substrate opposite to the liquid crystal layer.
  • the backlight 20 includes a flat light guide plate 21, a light source (not shown) such as an LED arranged to face one side of the light guide plate 21, and the back surface of the light guide plate 21.
  • a reflection portion (not shown) such as a reflection sheet, an optical sheet 22 on the light guide plate 21, and a backlight case 23 for housing these.
  • Each of the light guide plate 21, the light source, the reflection part, and the optical sheet 22 has the same function and structure as a general one.
  • Specific examples of the optical sheet 22 include sheets such as a prism sheet and a diffusion sheet, and a plurality of these sheets may be arranged as the optical sheet 22.
  • the backlight case 23 is formed in a flat box shape having an opening on the viewer side, and includes a flat plate portion 24 on the back side, a side wall portion 25 rising vertically from the peripheral edge of the flat plate portion 24, and an observer. Side opening 26.
  • the side wall portion 25 is provided so as to surround the flat plate portion 24, and the light source, the reflection portion, the light guide plate 21, and the optical sheet 22 are arranged in a space formed by the flat plate portion 24 and the side wall portion 25.
  • the flat plate portion 24 and the side wall portion 25 are not provided with openings such as through holes and cuts, respectively, thereby suppressing the deformation of the backlight 20 and preventing foreign matters such as dust in the backlight case 23. Preventing intrusion.
  • the material of the backlight case 23 examples include metal, resin, and the like.
  • the backlight case 23 is formed by a method such as cutting and die casting.
  • the backlight case 23 is formed by a general molding method. 23 can be produced. According to these methods, all the parts such as the side wall portion 25 of the backlight case 23 can be integrally formed.
  • the backlight case 23 may include a portion formed from a metal (for example, a sheet metal) and a portion formed from a resin, and such a backlight case 23 is formed by a method such as outsert molding. Can be produced.
  • the liquid crystal panel 10 is fitted into the opening 26 (the surface on the opened observer side) of the backlight case 23 so as to cover each member in the backlight case 23.
  • Each side surface (end surface) of the panel 10 faces the inner wall (inner side) 25 a of the side wall portion 25.
  • a panel holding portion 27 formed in a shape capable of fitting the frame portion 12 of the liquid crystal panel 10 is provided on the entire circumference of the inner wall 25 a of the side wall portion 25.
  • the liquid crystal panel 10 is held and fixed to the backlight case 23 by fitting the frame portion 12 into the panel holding portion 27.
  • the panel holding part 27 is preferably located at the end of the side wall part 25 (the part farthest from the flat plate part 24).
  • the panel holding portion 27 includes two rows of protruding ridge portions 28a and 28b formed in a straight line in parallel with each other at a predetermined interval, and a frame portion is formed in a gap between the protruding ridge portions 28a and 28b. 12 is fitted. Accordingly, the ridge 28a (corresponding to the first ridge) and the ridge 28b (corresponding to the second ridge) are respectively the observer side (front surface) and the rear side of the frame portion 12. It extends along (the back).
  • the interval between the ridges 28 a and 28 b is set to be approximately the same as the thickness of the frame portion 12.
  • the width of each protrusion 28a, 28b is not particularly limited as long as each protrusion 28a, 28b is arranged in the frame area 2 without interfering with the image display area 1, and can be set as appropriate. It is.
  • FIG. 3 is a schematic cross-sectional view of the liquid crystal display device according to Embodiment 1, and shows an enlarged portion including a panel holding portion and a frame portion.
  • 4 is a schematic cross-sectional view of the liquid crystal display device according to Embodiment 1, and shows a cross section taken along line B1-B2 in FIG.
  • the surface on the side of the frame portion 12 of each ridge 28a, 28b is flat, and these flat surfaces support the frame portion 12 as shown in FIGS. That is, the panel holding part 27 is applied to the frame part 12 in a plane (flat surface).
  • the panel holding portion 27 is provided on the entire periphery of the liquid crystal panel 10.
  • the liquid crystal panel 10 has four straight side surfaces and two arc-shaped side surfaces, but the panel holding portion 27 extends along the entire side surfaces. It is preferable to be arranged.
  • the arrangement location of the panel holding part 27 is not particularly limited.
  • the plurality of panel holding portions 27 are disposed at a plurality of locations around the liquid crystal panel 10. The plurality of panel holding portions 27 may be provided evenly around the liquid crystal panel 10.
  • the liquid crystal display device 100 of the present embodiment includes the liquid crystal panel 10 and the backlight 20, and the liquid crystal panel 10 includes the image display unit 11 and the frame around the image display unit 11.
  • the backlight 20 includes an optical sheet 22 positioned behind the liquid crystal panel 10, a light guide plate 21 positioned behind the optical sheet 22, and a backlight case 23.
  • the light case 23 is a box having an opening on the viewer side, and includes a flat plate portion 24 and a side wall portion 25 rising from the flat plate portion 24.
  • the optical sheet 22 and the light guide plate 21 include a backlight.
  • a panel holding portion 27 formed in a shape in which the frame portion 12 can be fitted is provided on the inner wall 25 a of the side wall portion 25, which is accommodated in the case 23. Edge 12 is fitted.
  • the inner wall 25a of the side wall portion 25 is provided with the panel holding portion 27 formed in a shape capable of fitting the frame portion 12, and the frame portion 12 is fitted into the panel holding portion 27.
  • the width of the frame region 2 of the liquid crystal display device 100 is the sum of the plate thickness of the side wall portion 25 of the backlight case 23 and the width of the frame portion 12 of the liquid crystal panel 10. Therefore, dramatic narrowing of the frame, that is, dramatic reduction of the width of the frame area (image non-display area) 2 is possible. Further, the liquid crystal panel 10 can be firmly fixed to the backlight case 23.
  • the spacer is disposed to partition the formation region of the bonding portion, but the material of the bonding portion (adhesive) ) Is filled in the partition region so as to come into contact with the outer peripheral portion of the back member, the front member, and the display panel, so that the adhesive may enter the spacer and come into contact with the optical sheet and the light guide plate.
  • the adhesive when the adhesive penetrates between the light guide plate and the optical sheet and reaches the display area due to capillary action, luminance unevenness occurs on the light emitting surface of the backlight, and as a result, display unevenness occurs on the display surface of the display device. It will occur.
  • the adhesive may enter between adjacent optical sheets. Further, outgas is generated from the adhesive, and the metal part may be corroded.
  • a flow-preventing member such as an adhesive is disposed so that the second adhesive material does not enter the gap between the liquid crystal panel and the plate-like body. It cannot be said that there is no possibility of the second adhesive material intruding inside. In that case, as in the case described above, luminance unevenness and display unevenness occur. Further, outgas is generated from the second adhesive material, and the metal part may be corroded.
  • FIG. 5 is a schematic cross-sectional view of a liquid crystal display device according to a first modification of the first embodiment.
  • the shape of the panel holding part 27 is not particularly limited as long as the frame part 12 of the liquid crystal panel 10 can be fitted.
  • the panel holding part 27 may include a row of concave line parts 29 formed linearly along the frame part 12, and the frame part 12 is included in the concave line part 29. May be fitted. According to this structure, even when the frame portion 12 is very narrow, the frame portion 12 can be held by the panel holding portion 27. Therefore, the frame region 2 is made narrower than the structure described with reference to FIG. It is possible.
  • the width of the concave stripe portion 29 in the depth direction (thickness direction) of the backlight 20 is set to be substantially the same as the thickness of the frame portion 12.
  • the depth of the concave portion 29 is not particularly limited as long as the side wall portion 25 is disposed in the frame region 2 without interfering with the image display region 1, and can be set as appropriate.
  • the shape of the portion in which the frame portion 12 of the panel holding portion 27 is fitted closely matches the shape of the frame portion 12, and the space between the panel holding portion 27 and the frame portion 12 is the same. Although no gap was provided, the gap may be partially provided between the panel holding portion 27 and the frame portion 12.
  • the flat portion (flat surface) of the panel holding portion 27 is applied to the frame portion 12.
  • the panel holding portion 27 is framed by a dotted or linear portion. It may be applied to part 12.
  • a line or Point contact is preferred. An example is shown below.
  • FIG. 6 is a schematic cross-sectional view of a liquid crystal display device according to a second modification of the first embodiment, and shows an enlarged portion including a panel holding portion and a frame portion.
  • FIG. 7 is a schematic cross-sectional view of a liquid crystal display device according to a second modification of the first embodiment, and shows a cross section taken along line C1-C2 in FIG.
  • a plurality of protrusions 30 may be provided on the surface of the ridges 28 a and 28 b on the frame part 12 side.
  • the frame portion 12 may be supported.
  • each protrusion 30 is not particularly limited, and examples thereof include a hemispherical shape, an elliptical spherical shape, and a conical shape in addition to a spherical crown shape as shown in FIGS.
  • FIG. 8 is a schematic cross-sectional view of a liquid crystal display device according to a third modification of Embodiment 1, and shows an enlarged portion including a panel holding portion and a frame portion.
  • FIG. 9 is a schematic cross-sectional view of a liquid crystal display device according to a third modification of Embodiment 1, and shows a cross section taken along line D1-D2 in FIG.
  • a plurality of ridges 32 may be provided on the surface of the ridges 28 a and 28 b on the frame part 12 side, and each ridge line part of these ridges 32 is provided.
  • the frame portion 12 may be supported by 33.
  • the linear portion of the panel holding portion 27 (the ridge line portion 33 of each of the ridge portions 28a and 28b) may be applied to the frame portion 12.
  • Two adjacent ridge portions 32 are arranged without a gap, and the ridge line portion 33 of each ridge portion 32 extends in a direction intersecting with the side wall portion 25, for example, in a direction orthogonal to the side wall portion 25.
  • the shape of each ridge portion 32 is not particularly limited, and examples thereof include a triangular shape in cross section as shown in FIGS.
  • FIG. 10 is a schematic cross-sectional view of a liquid crystal display device according to a fourth modification of the first embodiment.
  • an elastic buffer member 3 may be disposed between the liquid crystal panel 10 and the backlight case 23, more specifically, between the frame portion 12 and the panel holding portion 27.
  • the display performance of the liquid crystal panel 10 may be deteriorated due to the stress transmitted from the backlight case 23 to the liquid crystal panel 10.
  • the elastic buffer member 3 between the liquid crystal panel 10 and the backlight case 23, it is possible to prevent such deterioration in display performance.
  • the material of the elastic buffer member 3 is not particularly limited, and examples thereof include elastomers such as rubber.
  • FIGS. 11 and 12 are schematic cross-sectional views of liquid crystal display devices according to fifth and sixth modifications of Embodiment 1, respectively.
  • the liquid crystal panel 10 may be disposed so as not to generate a gap with the optical sheet 22, or may be in contact with the entire optical sheet 22.
  • the liquid crystal panel 10 is in contact with the optical sheet 22, so that the liquid crystal panel 10 can be prevented from entering more than necessary in the depth direction of the backlight 20.
  • the panel holding portion 27 may not include the protruding strip portion 28b but may include the protruding strip portion 28a.
  • the frame part 12 may be engage
  • the liquid crystal panel 10 is held by the backlight 20 by the frame portion 12 of the liquid crystal panel 10 disposed on the optical sheet 22 being pressed from the observer side by the ridge 28a.
  • the width of the ridge 28a is not particularly limited as long as the ridge 28 is arranged in the frame area 2 without interfering with the image display area 1, and can be set as appropriate.
  • the panel holding portion 27 includes a straight protruding portion 28 a provided along the observer side (front surface) of the frame portion 12, thereby providing a protruding portion 28 a and a side wall.
  • the frame portion 12 can be shielded integrally with the portion 25. Therefore, it is possible to effectively prevent light leakage in the frame region 2.
  • FIGS. 13 and 14 are schematic cross-sectional views of liquid crystal display devices according to seventh and eighth modifications of Embodiment 1, respectively. As shown in FIGS. 13 and 14, even when the liquid crystal panel 10 is in contact with the optical sheet 22, between the liquid crystal panel 10 and the backlight case 23, more specifically, between the frame portion 12 and the panel holding portion 27.
  • the buffer member 3 having elasticity may be disposed.
  • Embodiment 2 In the present embodiment, features unique to the present embodiment will be mainly described, and the description overlapping with the first embodiment will be omitted. Moreover, in this embodiment and Embodiment 1, the same code
  • the present embodiment is substantially the same as the first embodiment except for the points described below.
  • FIG. 15 is a schematic cross-sectional view of the liquid crystal display device according to the second embodiment.
  • the liquid crystal display device 200 according to the present embodiment further includes a panel fixing member 40 that fixes the liquid crystal panel 10 to the backlight case 23.
  • the liquid crystal panel 10 is not placed on the inner wall 25a of the side wall portion 25 of the backlight case 23, but the liquid crystal panel 10 is disposed on the end portion (the portion farthest from the flat plate portion 24) of the side wall portion 25.
  • the frame portion 12 of the liquid crystal panel 10 is disposed on the end surface (the upper surface, the surface farthest from the flat plate portion 24) of the side wall portion 25.
  • the panel fixing member 40 is being fixed to the backlight case 23 in the state which pressed down the frame part 12 with the panel fixing member 40 from the observer side.
  • the liquid crystal panel 10 is held and fixed to the backlight case 23 by sandwiching the frame portion 12 by the panel fixing member 40 and the side wall portion 25.
  • the arrangement location of the panel fixing member 40 is not particularly limited, but from the viewpoint of fixing the liquid crystal panel 10 to the backlight 20 more firmly, the panel fixing member 40 is preferably arranged around the entire periphery of the liquid crystal panel 10. .
  • the liquid crystal panel 10 has four linear side surfaces and two arc-shaped side surfaces, but the panel fixing member 40 is opposed to each of these side surfaces. It is preferable to be arranged as follows.
  • one integrally formed frame-shaped panel fixing member 40 may be disposed, or each is formed so as to be adapted to a corresponding portion.
  • a plurality of panel fixing members 40 may be used in combination.
  • a plurality of panel fixing members 40 are provided at a plurality of locations around the liquid crystal panel 10. May be provided apart from each other, or the plurality of panel fixing members 40 may be equally arranged around the liquid crystal panel 10.
  • the panel fixing member 40 is formed of a metal plate by a method such as press working, for example, and is connected to the panel pressing portion 41 that presses the frame portion 12 from the observer side and the panel pressing portion 41, and is connected to the backlight case 23. And a fixed case fixing portion 42.
  • the panel pressing portion 41 is provided along the surface on the viewer side of the frame portion 12 of the liquid crystal panel 10, and the case fixing portion 42 is provided along the outer wall (outer side) of the backlight case 23.
  • fixed part 42 is not specifically limited, For example, an adhesive member, screwing, claw fitting etc. are mentioned.
  • the panel fixing member 40 is a substantially L-shaped member in cross section, and the panel pressing portion 41 and the case fixing portion 42 are each plate-shaped, and the case fixing portion 42 is connected to the end of the panel pressing portion 41. ing. Further, the panel pressing portion 41 is formed to have an angle of about 90 ° with respect to the case fixing portion 42.
  • the panel fixing member 40 is arranged so that the panel pressing portion 41 is along the viewer side surface of the frame portion 12 of the liquid crystal panel 10 and the case fixing portion 42 is along the outer wall of the side wall portion 25 of the backlight case 23. Has been.
  • the case fixing portion 42 is fixed to the outer wall of the side wall portion 25 of the backlight case 23 with the panel pressing portion 41 in contact with the frame portion 12.
  • FIG. 16 is a schematic cross-sectional view of a liquid crystal display device according to a first modification of the second embodiment.
  • the shape of the panel fixing member 40 is not particularly limited to the shape shown in FIG.
  • the panel fixing member 40 may have a substantially U shape (U shape) in cross section.
  • the case fixing portion 42 is substantially L-shaped in cross-section and includes plate-like first and second portions 42a and 42b, respectively, and one end of the first portion 42a is at the end of the panel pressing portion 41. The other end of the first portion 42a is connected to the end of the second portion 42b.
  • the panel pressing portion 41 and the second portion 42b are each formed to have an angle of approximately 90 ° with respect to the first portion 42a.
  • the panel pressing portion 41 is along the viewer side surface of the frame portion 12 of the liquid crystal panel 10
  • the first portion 42a of the case fixing portion 42 is along the outer wall of the side wall portion 25 of the backlight case 23
  • the second portion 42 b of the case fixing portion 42 is arranged along the outer wall of the flat plate portion 24 of the backlight case 23.
  • the panel fixing member 40 is fixed to the backlight case 23 with the panel pressing portion 41 in contact with the frame portion 12.
  • the fixing means of the panel fixing member 40 is not specifically limited, For example, an adhesive member, screwing, claw fitting, etc. are mentioned. The location of these fixing means is not particularly limited and can be set as appropriate.
  • the panel fixing member 40 may be attached so as to sandwich the liquid crystal panel 10 and the backlight case 23 by the panel pressing portion 41 and the second portion 42b, and the panel fixing member 40 may be fixed to the backlight case 23 by the sandwiching force. .
  • the liquid crystal display device 200 when the liquid crystal display device 200 is incorporated into another system, the liquid crystal display device 200 may be selected depending on whether a flat surface having a certain area is required for the entire back surface or the side surface of the backlight case 23.
  • the liquid crystal display device 200 of the present embodiment includes the liquid crystal panel 10, the backlight 20, and the panel fixing member 40.
  • the liquid crystal panel 10 includes the image display unit 11 and the image display unit.
  • the backlight 20 includes an optical sheet 22 positioned behind the liquid crystal panel 10, a light guide plate 21 positioned behind the optical sheet 22, and a backlight case 23.
  • the backlight case 23 is a box having an opening on the viewer side, and includes a flat plate portion 24 and a side wall portion 25 rising from the flat plate portion 24.
  • the optical sheet 22 and the light guide plate 21 is housed in the backlight case 23, and the panel fixing member 40 includes a panel pressing portion 41 that presses the frame portion 12. Are constant, the frame portion 12 is clamped to the panel pressing portions 41 and the side wall portion 25.
  • the panel fixing member 40 includes the panel pressing portion 41 that presses the frame portion 12 and is fixed to the backlight case 23, and the frame portion 12 is attached to the panel pressing portion 41 and the side wall portion 25. Since it is sandwiched, the width of the frame region 2 of the liquid crystal display device 200 is the sum of the plate thickness of the panel fixing member 40 and the width of the frame portion 12 of the liquid crystal panel 10. Therefore, dramatic narrowing of the frame, that is, dramatic reduction of the frame area (image non-display area) 2 is possible. Further, the liquid crystal panel 10 can be firmly fixed to the backlight case 23.
  • FIG. 17 is a schematic cross-sectional view of a liquid crystal display device according to a second modification of the second embodiment.
  • the liquid crystal panel 10 and the backlight case 23 more specifically, between the frame portion 12 and the side wall portion 25
  • a shock-absorbing member 3 may be disposed.
  • the display performance of the liquid crystal panel 10 may be deteriorated due to the stress transmitted from the backlight case 23 or the panel fixing member 40 to the liquid crystal panel 10.
  • the elastic buffer member 3 between the liquid crystal panel 10 and the backlight case 23 and between the liquid crystal panel 10 and the panel fixing member 40, such deterioration in display performance can be prevented. Can do.
  • FIG. 18 is a schematic cross-sectional view of a liquid crystal display device according to a third modification of the second embodiment. As shown in FIG. 18, the liquid crystal panel 10 may be disposed so as not to generate a gap with the optical sheet 22, or may be in contact with the entire optical sheet 22.
  • the liquid crystal panel 10 is in contact with the optical sheet 22, so that the liquid crystal panel 10 can be prevented from entering more than necessary in the depth direction of the backlight 20.
  • FIG. 19 is a schematic cross-sectional view of a liquid crystal display device according to a fourth modification of the second embodiment. As shown in FIG. 19, even when the liquid crystal panel 10 is in contact with the optical sheet 22, between the liquid crystal panel 10 and the backlight case 23 (more specifically, between the frame portion 12 and the side wall portion 25) and the liquid crystal panel. Between 10 and the panel fixing member 40, the buffer member 3 which has elasticity may be arranged.
  • FIG. 20 is a schematic cross-sectional view of the liquid crystal display device according to the third embodiment.
  • the liquid crystal display device 300 according to the present embodiment further includes a bezel 50 that holds the liquid crystal panel 10.
  • the liquid crystal panel 10 is not fitted into the inner wall 25a of the side wall portion 25 of the backlight case 23, but the frame portion 12 of the liquid crystal panel 10 is held by the bezel 50, and the bezel 50 is held by the backlight case 23. It is fixed to. In this way, the liquid crystal panel 10 is held and fixed to the backlight case 23.
  • the bezel 50 is a frame-like member having an opening including at least an area including the image display area 1, and is surrounded by the frame portion 12 of the liquid crystal panel 10 so as not to interfere with the image display area 1.
  • the bezel 50 is usually arranged so as to surround the entire frame portion 12 of the liquid crystal panel 10, but the location of the bezel 50 is not particularly limited, and the bezel 50 is arranged only in a part around the liquid crystal panel 10. May be.
  • the bezel 50 includes a panel holding portion 51 formed in a shape that allows the frame portion 12 to be fitted therein.
  • the frame portion 12 is fitted into the panel holding portion 51.
  • the shape that can fit the frame portion 12 may be the same as the shape described in the first embodiment. That is, the shape of the portion of the panel holding portion 51 into which the frame portion 12 is fitted may exactly match the shape of the frame portion 12, and a gap is partially provided between the panel holding portion 51 and the frame portion 12. It may be done.
  • maintenance part 51 may be applied to the frame part 12, and the panel holding part 51 may be applied to the frame part 12 by a dotted
  • the panel holding part 51 includes two rows of protruding ridges 53a and 53b formed in a straight line in parallel with each other at a predetermined interval, and in the gap between these protruding ridges 53a and 53b.
  • a frame portion 12 is fitted.
  • the ridges 53a and 53b extend along the observer side (front surface) and the rear side (back surface) of the frame portion 12, respectively.
  • the interval between the ridges 53 a and 53 b is set to be substantially the same as the thickness of the frame portion 12.
  • the widths of the ridges 53a and 53b are not particularly limited as long as the ridges 53a and 53b are arranged in the frame area 2 without interfering with the image display area 1, and can be set as appropriate. It is.
  • the bezel 50 further includes a plate-like case fixing portion 52 connected to the panel holding portion 51.
  • the bezel 50 is fitted into the backlight case 23 so that the case fixing portion 52 is along the outer wall of the side wall portion 25 of the backlight case 23.
  • the case fixing part 52 is fixed to the backlight case 23.
  • the fixing means of the case fixing part 52 is not particularly limited, and examples thereof include an adhesive member, screwing, and claw fitting.
  • the panel holding portion 51 abuts on an end portion (a portion farthest from the flat plate portion 24) of the side wall portion 25 of the backlight case 23, more specifically, an end surface (an upper surface, a surface farthest from the flat plate portion 24) of the side wall portion 25.
  • the bezel 50 is formed from a resin by a general molding method, and all parts such as the panel holding portion 51 of the bezel 50 are integrally formed.
  • FIG. 21 is a schematic cross-sectional view of a liquid crystal display device according to a first modification of the third embodiment.
  • the method for fixing the bezel 50 is not particularly limited to the method shown in FIG.
  • the case fixing part 52 may not be provided.
  • the panel holding portion 51 of the bezel 50 is disposed on the end portion of the side wall portion 25, more specifically, on the end surface of the side wall portion 25.
  • the liquid crystal panel 10 is fixed to the backlight case 23 by an adhesive member 4 such as an adhesive tape.
  • the liquid crystal display device 300 of this embodiment includes the liquid crystal panel 10, the backlight 20, and the bezel 50, and the liquid crystal panel 10 includes the image display unit 11 and the image display unit 11.
  • the backlight 20 includes an optical sheet 22 positioned behind the liquid crystal panel 10, a light guide plate 21 positioned behind the optical sheet 22, and a backlight case 23.
  • the backlight case 23 is a box having an opening on the viewer side, and includes a flat plate portion 24 and a side wall portion 25 rising from the flat plate portion 24.
  • the optical sheet 22 and the light guide plate 21 are
  • the bezel 50 is housed in the backlight case 23, and the bezel 50 includes a panel holding portion 51 formed into a shape that allows the frame portion 12 to be fitted therein. Is fitted to 51, the bezel 50 is fixed to 25 the side wall portion.
  • the bezel 50 includes the panel holding portion 51 formed in a shape in which the frame portion 12 can be fitted.
  • the frame portion 12 is fitted into the panel holding portion 51, and the bezel 50 has 25 side walls. Therefore, the width of the frame area 2 of the liquid crystal display device 300 is the sum of the plate thickness of the bezel 50 and the width of the frame portion 12 of the liquid crystal panel 10. Therefore, dramatic narrowing of the frame, that is, dramatic reduction of the frame area (image non-display area) 2 is possible. Further, the liquid crystal panel 10 can be firmly fixed to the backlight case 23.
  • FIGS. 22 and 23 are schematic cross-sectional views of liquid crystal display devices according to second and third modifications of Embodiment 3, respectively.
  • an elastic buffer member 3 may be disposed between the liquid crystal panel 10 and the bezel 50, more specifically, between the frame portion 12 and the panel holding portion 51.
  • the display performance of the liquid crystal panel 10 may be deteriorated due to a stress transmitted to the liquid crystal panel 10 from the outside.
  • the buffer member 3 having elasticity between the liquid crystal panel 10 and the bezel 50 it is possible to prevent such deterioration in display performance.
  • FIGS. 24 and 25 are schematic cross-sectional views of liquid crystal display devices according to fourth and fifth modifications of Embodiment 3, respectively. As shown in FIGS. 24 and 25, the liquid crystal panel 10 may be disposed so as not to generate a gap with the optical sheet 22, or may be in contact with the entire optical sheet 22.
  • the liquid crystal panel 10 is in contact with the optical sheet 22, so that the liquid crystal panel 10 can be prevented from entering more than necessary in the depth direction of the backlight 20.

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Abstract

The present invention provides a LCD device capable of narrowing a frame. The present invention is a LCD device provided with a liquid crystal panel and a backlight, wherein the LCD device includes an image display unit and a frame section around the image display unit; the backlight includes an optical sheet positioned rearward of the liquid crystal panel, a light guide plate positioned rearward of the optical sheet, and backlight case; the backlight case is a housing with the plane on the viewer side open and includes a flat plate section and sidewall sections that stand erect from the flat plate section; and the optical sheet and light guide plate are accommodated in the backlight case, a panel-holding section formed in a shape that allows the frame section to be fitted and inserted being provided to the inner walls of the sidewall sections, and the frame section being fitted and inserted into the panel-holding section.

Description

液晶表示装置Liquid crystal display
本発明は、液晶表示装置に関する。より詳しくは、狭額縁が求められる表示装置に好適な液晶表示装置に関するものである。 The present invention relates to a liquid crystal display device. More specifically, the present invention relates to a liquid crystal display device suitable for a display device requiring a narrow frame.
近年、液晶表示装置の分野においては、今までのスクエア型ではなくフリーな形状のディスプレイが求められている。同時に表示面とディスプレイの外形（ディスプレイの端面によって形成される形）との大きさを極力同等とするため、画像が表示されない額縁領域を可能な限り狭くすることが求められている。しかしながら、従来の液晶表示装置における液晶パネルの固定方法では、このような液晶表示装置を実現するに当たり限界がある。 In recent years, in the field of liquid crystal display devices, a display having a free shape is required instead of the conventional square type. At the same time, in order to make the size of the display surface and the outer shape of the display (the shape formed by the end face of the display) as much as possible, it is required to make the frame area where no image is displayed as narrow as possible. However, the liquid crystal panel fixing method in the conventional liquid crystal display device has a limit in realizing such a liquid crystal display device.
表示装置における種々の部材の固定方法に関する技術としては、例えば、以下の技術が開示されている。 For example, the following techniques are disclosed as techniques relating to the fixing method of various members in the display device.
表示パネルと、表示パネルの前面側に設けられた透明前面板と、表示パネルと透明前面板の間に設けられた接着部材とを有する表示装置であって、透明前面板が接着部材のみにより表示パネルに固定される表示装置が開示されている（例えば、特許文献１参照。）。 A display device having a display panel, a transparent front plate provided on the front side of the display panel, and an adhesive member provided between the display panel and the transparent front plate, wherein the transparent front plate is formed on the display panel only by the adhesive member A fixed display device is disclosed (for example, refer to Patent Document 1).
表示パネルと、表示パネルの前面に設けられるとともに、表示パネルの少なくとも周辺部を覆う前面部材と、表示パネルの背面に設けられるとともに、表示パネルの少なくとも背面を覆う背面部材と、背面部材と前面部材とを接着するとともに、表示パネルの外周部分を覆う接着部とを備える表示装置が開示されている（例えば、特許文献２参照。）。 A display panel, a front member that is provided on the front surface of the display panel and covers at least the periphery of the display panel, a back member that is provided on the back surface of the display panel and covers at least the back surface of the display panel, and a back member and a front member And a bonding device that covers the outer peripheral portion of the display panel is disclosed (for example, see Patent Document 2).
表示パネルの表示面に第一の接着材料により接着された透明体と、表示パネルの裏面側に設けられ、表示パネルを保持する板状体を備え、透明体と板状体が、表示パネルの外側で重なり合う部分で第二の接着材料により接着固定され、表示パネルと板状体の間隙に第二の接着材料が浸入しないように、板状体に流れ止め部材が設置された表示装置が開示されている（例えば、特許文献３参照。）。 A transparent body bonded to the display surface of the display panel by a first adhesive material, and a plate-like body that is provided on the back side of the display panel and holds the display panel. The transparent body and the plate-like body are provided on the display panel. Disclosed is a display device in which a flow-preventing member is installed in a plate-like body so that the second adhesive material does not enter the gap between the display panel and the plate-like body, and is bonded and fixed by a second adhesive material at an overlapping portion on the outside (For example, see Patent Document 3).
画像表示部と枠体を有する表示側パネルと、保護部との間に、光硬化型樹脂組成物を、画像表示部と枠体に亘るように介在させ、光硬化させて樹脂硬化物層を形成する工程を有する画像表示装置の製造方法において、画像表示部と枠体の間の隙間を密閉フィルムによって密閉した後、表示側パネルと保護部との間に光硬化型樹脂組成物を介在させることが開示されている（例えば、特許文献４参照。）。 A photocurable resin composition is interposed between the image display unit and the display side panel having the frame and the protection unit so as to extend over the image display unit and the frame, and photocured to form a cured resin layer. In the manufacturing method of an image display device having a forming step, after the gap between the image display portion and the frame is sealed with a sealing film, the photocurable resin composition is interposed between the display side panel and the protection portion. (For example, refer to Patent Document 4).
液晶パネルと、液晶パネルに光を提供する光源部と、一側には光源部が結合され、ガラス材質で形成される光ガイド部と、光ガイド部の一面又は他面のうち少なくとも１つの面に形成される反射部と、液晶パネルと対向する光ガイド部の一面に塗布されて液晶パネルと光ガイド部を結合する接着部材とを含むディスプレイ装置が開示されている（例えば、特許文献５参照。）。 A liquid crystal panel, a light source unit that provides light to the liquid crystal panel, a light source unit coupled to one side and formed of a glass material, and at least one surface of one surface or the other surface of the light guide unit A display device is disclosed that includes a reflection portion formed on the liquid crystal panel and an adhesive member that is applied to one surface of the light guide portion that faces the liquid crystal panel and couples the liquid crystal panel and the light guide portion (see, for example, Patent Document 5). .)
液晶層を介して一対の透明基板が対向配置されてなる液晶表示パネルと、液晶表示パネルの裏面に配置され、バックライト光を照射するバックライトユニットとを備える液晶表示装置であって、液晶表示パネルの側壁面とバックライトユニットの側壁面とに対向する板状部材を有し、板状部材は、液晶表示パネルの側壁面及びバックライトユニットの側壁面とに固定されている液晶表示装置が開示されている（例えば、特許文献６参照。）。 A liquid crystal display device comprising a liquid crystal display panel in which a pair of transparent substrates are disposed to face each other via a liquid crystal layer, and a backlight unit that is disposed on the back surface of the liquid crystal display panel and emits backlight light. A liquid crystal display device has a plate-like member facing the side wall surface of the panel and the side wall surface of the backlight unit, and the plate-like member is fixed to the side wall surface of the liquid crystal display panel and the side wall surface of the backlight unit. (For example, refer to Patent Document 6).
特開２０１４－１３０１９４号公報JP 2014-130194 A 特開２０１２－２４２８０５号公報JP 2012-242805 A 特開２００９－１２２６５５号公報JP 2009-122655 A 特開２００９－１８６９５６号公報JP 2009-186156 A 特開２０１４－２１９６５５号公報JP 2014-219655 A 特開２０１４－１２６６８５号公報Japanese Patent Application Laid-Open No. 2014-126585
図２６は、本発明者が検討を行った比較形態１に係る液晶表示装置の断面模式図である。
図２６に示すように、比較形態１に係る液晶表示装置は、液晶パネル１１０と、液晶パネル１１０の後方に配置されたバックライト１２０と、液晶パネル１１０をバックライト１２０に固定するための接着部材１３０（例えば両面テープ）とを備えている。バックライト１２０は、反射シート（図示せず）と、導光板１２１と、導光板１２１上の光学シート１２２と、これらを収容するバックライトケース１２３とを含んでいる。比較形態１に係る液晶表示装置においては、接着部材１３０によって液晶パネル１１０をバックライトケース１２３に固定している。しかしながら、粘着力を維持するために接着部材１３０の長さはある程度必要となり、画像表示領域１０１の周囲の額縁領域（画像非表示領域）１０２の幅が増加してしまう。このことが比較形態１に係る液晶表示装置の狭額縁化を阻害している。 FIG. 26 is a schematic cross-sectional view of a liquid crystal display device according to Comparative Example 1 studied by the present inventors.
As shown in FIG. 26, the liquid crystal display device according to the comparative example 1 includes a liquid crystal panel 110, a backlight 120 disposed behind the liquid crystal panel 110, and an adhesive member for fixing the liquid crystal panel 110 to the backlight 120. 130 (for example, double-sided tape). The backlight 120 includes a reflection sheet (not shown), a light guide plate 121, an optical sheet 122 on the light guide plate 121, and a backlight case 123 that accommodates these. In the liquid crystal display device according to the comparative example 1, the liquid crystal panel 110 is fixed to the backlight case 123 by the adhesive member 130. However, in order to maintain the adhesive force, the length of the adhesive member 130 is required to some extent, and the width of the frame area (image non-display area) 102 around the image display area 101 is increased. This hinders the narrowing of the frame of the liquid crystal display device according to the comparative example 1.
特許文献１は、液晶パネルとバックライトとの固定方法を開示していないが、特許文献１に記載の表示装置では、表示パネル外周部の非表示領域に第１接着剤が設けられており、また、表示パネル保持部材に対して外枠部材がネジ止めされている。そのため、これらがネックとなり、狭額縁化には限界がある。 Patent Document 1 does not disclose a method of fixing the liquid crystal panel and the backlight. However, in the display device described in Patent Document 1, the first adhesive is provided in the non-display area of the outer periphery of the display panel. Further, the outer frame member is screwed to the display panel holding member. Therefore, these become a bottleneck and there is a limit to narrowing the frame.
特許文献２に記載の表示装置、特に第１、第３及び第４の実施の形態では、スペーサを配置して接着部の形成領域を区画しているが、スペーサの大きさの分だけ額縁領域が大きくなってしまう。 In the display device described in Patent Document 2, particularly in the first, third, and fourth embodiments, the spacer is arranged to define the formation region of the bonding portion. However, the frame region corresponds to the size of the spacer. Will become bigger.
特許文献３に記載の表示装置では、第二の接着材料が液晶パネルと板状体との間隙に浸入しないように、粘着材等の流れ止め部材が配置されているが、流れ止め部材の大きさの分だけ額縁領域が大きくなってしまう。 In the display device described in Patent Document 3, a flow prevention member such as an adhesive is disposed so that the second adhesive material does not enter the gap between the liquid crystal panel and the plate-like body. The frame area becomes larger by that amount.
特許文献４は、液晶パネルとバックライトとの固定方法を開示しておらず、保護部を表示側パネルに固定する方法を開示している。また、密閉フィルムを設けると、その大きさの分だけ額縁領域が大きくなってしまう。 Patent Document 4 does not disclose a method of fixing the liquid crystal panel and the backlight, but discloses a method of fixing the protection unit to the display side panel. Moreover, if a sealing film is provided, a frame area will become large by the magnitude | size.
特許文献５に記載のディスプレイ装置では、接着部材は、液晶パネルと対向する光ガイド部の一面に塗布されることから、接着力を維持するために接着部材の幅はある程度必要となり、接着部材の大きさの分だけ額縁領域が大きくなってしまう。 In the display device described in Patent Document 5, since the adhesive member is applied to one surface of the light guide portion facing the liquid crystal panel, the width of the adhesive member is required to some extent in order to maintain the adhesive force. The frame area becomes larger by the size.
特許文献６に記載のディスプレイ装置では、液晶表示パネルの側壁面と、導光板と光学シート外周を取り囲むモールド部材の側壁面とに板状部材を固定することによって、液晶表示パネルをバックライトユニットに固定している。したがって、モールド部材の大きさの分だけ額縁領域が大きくなってしまう。 In the display device described in Patent Document 6, a plate-like member is fixed to the side wall surface of the liquid crystal display panel and the side wall surface of the mold member that surrounds the outer periphery of the light guide plate and the optical sheet, thereby making the liquid crystal display panel a backlight unit. It is fixed. Therefore, the frame area becomes larger by the size of the mold member.
本発明は、上記現状に鑑みてなされたものであり、狭額縁化が可能な液晶表示装置を提供することを目的とするものである。 The present invention has been made in view of the above-described present situation, and an object thereof is to provide a liquid crystal display device capable of narrowing the frame.
本発明の一態様は、液晶パネル、及び、バックライトを備える液晶表示装置であって、
前記液晶パネルは、画像表示部と、前記画像表示部の周囲の額縁部とを含み、
前記バックライトは、前記液晶パネルの後方に位置する光学シートと、前記光学シートの後方に位置する導光板と、バックライトケースとを含み、
前記バックライトケースは、観察者側の面が開口した箱体であり、平板部と、前記平板部から立ち上がる側壁部とを含み、
前記光学シート、及び、前記導光板は、前記バックライトケース内に収容され、
前記側壁部の内壁には、前記額縁部を嵌め込み可能な形状に形成されたパネル保持部が設けられ、
前記パネル保持部に前記額縁部が嵌め込まれる液晶表示装置であってもよい。
以下、この液晶表示装置を本発明に係る第一の液晶表示装置とも言う。 One embodiment of the present invention is a liquid crystal display device including a liquid crystal panel and a backlight,
The liquid crystal panel includes an image display unit and a frame portion around the image display unit,
The backlight includes an optical sheet located behind the liquid crystal panel, a light guide plate located behind the optical sheet, and a backlight case.
The backlight case is a box with an open surface on the viewer side, and includes a flat plate portion and a side wall portion rising from the flat plate portion,
The optical sheet and the light guide plate are accommodated in the backlight case,
On the inner wall of the side wall part, a panel holding part formed in a shape capable of fitting the frame part is provided,
A liquid crystal display device in which the frame portion is fitted into the panel holding portion may be used.
Hereinafter, this liquid crystal display device is also referred to as a first liquid crystal display device according to the present invention.
本発明に係る第一の液晶表示装置における好ましい実施形態について以下に説明する。なお、以下の好ましい実施形態は、適宜、互いに組み合わされてもよく、以下の２以上の好ましい実施形態を互いに組み合わせた実施形態もまた、好ましい実施形態の一つである。 A preferred embodiment of the first liquid crystal display device according to the present invention will be described below. Note that the following preferred embodiments may be appropriately combined with each other, and an embodiment in which the following two or more preferred embodiments are combined with each other is also one of the preferred embodiments.
本発明に係る第一の液晶表示装置は、前記液晶パネル、及び、前記バックライトケースの間に、弾性を有する緩衝部材を更に備えてもよい。 The first liquid crystal display device according to the present invention may further include an elastic buffer member between the liquid crystal panel and the backlight case.
前記液晶パネルは、前記光学シートに接してもよい。 The liquid crystal panel may be in contact with the optical sheet.
前記パネル保持部は、前記額縁部の観察者側に沿って設けられた直線状の凸条部を含んでもよい。 The panel holding part may include a linear ridge provided along the viewer side of the frame part.
前記凸条部は、第１の凸条部であり、
前記パネル保持部は、前記額縁部の後方側に沿って設けられた直線状の第２の凸条部を含み、
前記第１及び第２の凸条部の各々の前記額縁部側の表面には、複数の突起部が設けられ、
前記額縁部は、前記複数の突起部の各々の頂点部によって支持されてもよい。 The ridge portion is a first ridge portion,
The panel holding portion includes a linear second ridge provided along the rear side of the frame portion,
A plurality of protrusions are provided on the frame side surface of each of the first and second ridges,
The frame portion may be supported by each vertex of the plurality of protrusions.
前記パネル保持部は、前記額縁部に沿って設けられた直線状の凹条部を含み、
前記額縁部は、前記凹条部に嵌め込まれてもよい。 The panel holding portion includes a linear concave stripe portion provided along the frame portion,
The frame part may be fitted into the concave strip part.
本発明の他の態様は、液晶パネル、バックライト、及び、パネル固定部材を備える液晶表示装置であって、
前記液晶パネルは、画像表示部と、前記画像表示部の周囲の額縁部とを含み、
前記バックライトは、前記液晶パネルの後方に位置する光学シートと、前記光学シートの後方に位置する導光板と、バックライトケースとを含み、
前記バックライトケースは、観察者側の面が開口した箱体であり、平板部と、前記平板部から立ち上がる側壁部とを含み、
前記光学シート、及び、前記導光板は、前記バックライトケース内に収容され、
前記パネル固定部材は、前記額縁部を押さえるパネル押え部を含み、かつ、前記バックライトケースに固定され、
前記額縁部は、前記パネル押え部及び前記側壁部に挟持される液晶表示装置であってもよい。
以下、この液晶表示装置を本発明に係る第二の液晶表示装置とも言う。 Another aspect of the present invention is a liquid crystal display device comprising a liquid crystal panel, a backlight, and a panel fixing member,
The liquid crystal panel includes an image display unit and a frame portion around the image display unit,
The backlight includes an optical sheet located behind the liquid crystal panel, a light guide plate located behind the optical sheet, and a backlight case.
The backlight case is a box with an open surface on the viewer side, and includes a flat plate portion and a side wall portion rising from the flat plate portion,
The optical sheet and the light guide plate are accommodated in the backlight case,
The panel fixing member includes a panel pressing portion that presses the frame portion, and is fixed to the backlight case.
The frame portion may be a liquid crystal display device that is sandwiched between the panel pressing portion and the side wall portion.
Hereinafter, this liquid crystal display device is also referred to as a second liquid crystal display device according to the present invention.
本発明に係る第二の液晶表示装置における好ましい実施形態について以下に説明する。なお、以下の好ましい実施形態は、適宜、互いに組み合わされてもよく、以下の２以上の好ましい実施形態を互いに組み合わせた実施形態もまた、好ましい実施形態の一つである。 A preferred embodiment of the second liquid crystal display device according to the present invention will be described below. Note that the following preferred embodiments may be appropriately combined with each other, and an embodiment in which the following two or more preferred embodiments are combined with each other is also one of the preferred embodiments.
本発明に係る第二の液晶表示装置は、前記液晶パネル、及び、前記バックライトケースの間、並びに、前記液晶パネル、及び、前記パネル固定部材の間に、弾性を有する緩衝部材を更に備えてもよい。 The second liquid crystal display device according to the present invention further includes a buffer member having elasticity between the liquid crystal panel and the backlight case, and between the liquid crystal panel and the panel fixing member. Also good.
前記液晶パネルは、前記光学シートに接してもよい。 The liquid crystal panel may be in contact with the optical sheet.
本発明の更に他の態様は、液晶パネル、バックライト、及び、ベゼルを備える液晶表示装置であって、
前記液晶パネルは、画像表示部と、前記画像表示部の周囲の額縁部とを含み、
前記バックライトは、前記液晶パネルの後方に位置する光学シートと、前記光学シートの後方に位置する導光板と、バックライトケースとを含み、
前記バックライトケースは、観察者側の面が開口した箱体であり、平板部と、前記平板部から立ち上がる側壁部とを含み、
前記光学シート、及び、前記導光板は、前記バックライトケース内に収容され、
前記ベゼルは、前記額縁部を嵌め込み可能な形状に形成されたパネル保持部を含み、
前記額縁部は、前記パネル保持部に嵌め込まれ、
前記ベゼルは、前記側壁部に固定される液晶表示装置であってもよい。
以下、この液晶表示装置を本発明に係る第三の液晶表示装置とも言う。 Still another embodiment of the present invention is a liquid crystal display device including a liquid crystal panel, a backlight, and a bezel,
The liquid crystal panel includes an image display unit and a frame portion around the image display unit,
The backlight includes an optical sheet located behind the liquid crystal panel, a light guide plate located behind the optical sheet, and a backlight case.
The backlight case is a box with an open surface on the viewer side, and includes a flat plate portion and a side wall portion rising from the flat plate portion,
The optical sheet and the light guide plate are accommodated in the backlight case,
The bezel includes a panel holding portion formed in a shape capable of fitting the frame portion,
The frame portion is fitted into the panel holding portion,
The bezel may be a liquid crystal display device fixed to the side wall portion.
Hereinafter, this liquid crystal display device is also referred to as a third liquid crystal display device according to the present invention.
本発明に係る第三の液晶表示装置における好ましい実施形態について以下に説明する。なお、以下の好ましい実施形態は、適宜、互いに組み合わされてもよく、以下の２以上の好ましい実施形態を互いに組み合わせた実施形態もまた、好ましい実施形態の一つである。 A preferred embodiment of the third liquid crystal display device according to the present invention will be described below. Note that the following preferred embodiments may be appropriately combined with each other, and an embodiment in which the following two or more preferred embodiments are combined with each other is also one of the preferred embodiments.
前記ベゼルは、前記パネル保持部に連結されたケース固定部を更に含み、
前記ケース固定部は、前記側壁部に沿って配され、前記側壁部に固定されてもよい。 The bezel further includes a case fixing part connected to the panel holding part,
The case fixing part may be arranged along the side wall part and fixed to the side wall part.
本発明に係る第三の液晶表示装置は、接着部材を更に備え、
前記ベゼルは、前記側壁部上に配置され、前記接着部材によって前記側壁部に固定されてもよい。 The third liquid crystal display device according to the present invention further comprises an adhesive member,
The bezel may be disposed on the side wall portion and fixed to the side wall portion by the adhesive member.
本発明に係る第三の液晶表示装置は、前記液晶パネル、及び、前記ベゼルの間に、弾性を有する緩衝部材を更に備えてもよい。 The third liquid crystal display device according to the present invention may further include an elastic buffer member between the liquid crystal panel and the bezel.
前記液晶パネルは、前記光学シートに接してもよい。 The liquid crystal panel may be in contact with the optical sheet.
本発明によれば、狭額縁化が可能な液晶表示装置を実現することができる。 According to the present invention, a liquid crystal display device capable of narrowing a frame can be realized.
実施形態１に係る液晶表示装置の平面模式図である。1 is a schematic plan view of a liquid crystal display device according to Embodiment 1. FIG. 実施形態１に係る液晶表示装置の断面模式図であり、図１中のＡ１－Ａ２線断面を示す。FIG. 2 is a schematic cross-sectional view of the liquid crystal display device according to Embodiment 1, showing a cross section taken along line A1-A2 in FIG. 実施形態１に係る液晶表示装置の断面模式図であり、パネル保持部及び額縁部を含む部分を拡大して示す。It is a cross-sectional schematic diagram of the liquid crystal display device according to the first embodiment, and shows an enlarged portion including a panel holding portion and a frame portion. 実施形態１に係る液晶表示装置の断面模式図であり、図３中のＢ１－Ｂ２線断面を示す。FIG. 3 is a schematic cross-sectional view of the liquid crystal display device according to Embodiment 1, showing a cross section along line B1-B2 in FIG. 実施形態１の第一の変形例に係る液晶表示装置の断面模式図である。6 is a schematic cross-sectional view of a liquid crystal display device according to a first modification of Embodiment 1. FIG. 実施形態１の第二の変形例に係る液晶表示装置の断面模式図であり、パネル保持部及び額縁部を含む部分を拡大して示す。It is a cross-sectional schematic diagram of the liquid crystal display device which concerns on the 2nd modification of Embodiment 1, and expands and shows the part containing a panel holding | maintenance part and a frame part. 実施形態１の第二の変形例に係る液晶表示装置の断面模式図であり、図６中のＣ１－Ｃ２線断面を示す。FIG. 10 is a schematic cross-sectional view of a liquid crystal display device according to a second modification example of Embodiment 1, and shows a cross section taken along line C1-C2 in FIG. 実施形態１の第三の変形例に係る液晶表示装置の断面模式図であり、パネル保持部及び額縁部を含む部分を拡大して示す。It is a cross-sectional schematic diagram of the liquid crystal display device which concerns on the 3rd modification of Embodiment 1, and expands and shows the part containing a panel holding | maintenance part and a frame part. 実施形態１の第三の変形例に係る液晶表示装置の断面模式図であり、図８中のＤ１－Ｄ２線断面を示す。FIG. 10 is a schematic cross-sectional view of a liquid crystal display device according to a third modification of Embodiment 1, and shows a cross section taken along line D1-D2 in FIG. 実施形態１の第四の変形例に係る液晶表示装置の断面模式図である。6 is a schematic cross-sectional view of a liquid crystal display device according to a fourth modification of Embodiment 1. FIG. 実施形態１の第五の変形例に係る液晶表示装置の断面模式図である。10 is a schematic cross-sectional view of a liquid crystal display device according to a fifth modification of Embodiment 1. FIG. 実施形態１の第六の変形例に係る液晶表示装置の断面模式図である。7 is a schematic cross-sectional view of a liquid crystal display device according to a sixth modification of Embodiment 1. FIG. 実施形態１の第七の変形例に係る液晶表示装置の断面模式図である。FIG. 10 is a schematic cross-sectional view of a liquid crystal display device according to a seventh modification example of Embodiment 1. 実施形態１の第八の変形例に係る液晶表示装置の断面模式図である。12 is a schematic cross-sectional view of a liquid crystal display device according to an eighth modification of Embodiment 1. FIG. 実施形態２に係る液晶表示装置の断面模式図である。6 is a schematic cross-sectional view of a liquid crystal display device according to Embodiment 2. FIG. 実施形態２の第一の変形例に係る液晶表示装置の断面模式図である。6 is a schematic cross-sectional view of a liquid crystal display device according to a first modification of Embodiment 2. FIG. 実施形態２の第二の変形例に係る液晶表示装置の断面模式図である。FIG. 10 is a schematic cross-sectional view of a liquid crystal display device according to a second modification example of Embodiment 2. 実施形態２の第三の変形例に係る液晶表示装置の断面模式図である。12 is a schematic cross-sectional view of a liquid crystal display device according to a third modification of Embodiment 2. FIG. 実施形態２の第四の変形例に係る液晶表示装置の断面模式図である。12 is a schematic cross-sectional view of a liquid crystal display device according to a fourth modification of Embodiment 2. FIG. 実施形態３に係る液晶表示装置の断面模式図である。6 is a schematic cross-sectional view of a liquid crystal display device according to Embodiment 3. FIG. 実施形態３の第一の変形例に係る液晶表示装置の断面模式図である。6 is a schematic cross-sectional view of a liquid crystal display device according to a first modification of Embodiment 3. FIG. 実施形態３の第二の変形例に係る液晶表示装置の断面模式図である。FIG. 10 is a schematic cross-sectional view of a liquid crystal display device according to a second modification example of Embodiment 3. 実施形態３の第三の変形例に係る液晶表示装置の断面模式図である。12 is a schematic cross-sectional view of a liquid crystal display device according to a third modification of Embodiment 3. FIG. 実施形態３の第四の変形例に係る液晶表示装置の断面模式図である。12 is a schematic cross-sectional view of a liquid crystal display device according to a fourth modification of Embodiment 3. FIG. 実施形態３の第五の変形例に係る液晶表示装置の断面模式図である。FIG. 10 is a schematic cross-sectional view of a liquid crystal display device according to a fifth modification example of Embodiment 3. 本発明者が検討を行った比較形態１に係る液晶表示装置の断面模式図である。It is a cross-sectional schematic diagram of the liquid crystal display device which concerns on the comparative form 1 which this inventor examined.
以下、図面を参照しながら本発明の実施形態及び実施例を説明するが、本発明は、以下の実施形態及び実施例に限定されるものではない。また、各実施形態及び実施例の構成は、本発明の要旨を逸脱しない範囲において適宜組み合わされてもよいし、変更されてもよい。なお、各図面において、同様の機能を発揮する部材には同じ符号を付している。 Hereinafter, embodiments and examples of the present invention will be described with reference to the drawings, but the present invention is not limited to the following embodiments and examples. In addition, the configurations of the embodiments and examples may be appropriately combined or changed without departing from the gist of the present invention. In addition, in each drawing, the same code | symbol is attached | subjected to the member which exhibits the same function.
（実施形態１）
図１は、実施形態１に係る液晶表示装置の平面模式図である。
図１に示すように、実施形態１に係る液晶表示装置１００は、液晶パネル１０を備え、任意の形状の画像表示領域１を有している。液晶表示装置１００及び液晶パネル１０の外形の平面形状は、画像表示領域１と実質的に同じ形状に設計されている。液晶表示装置１００は、図１に示すように、画像表示領域１及び液晶パネル１０の各形状が長方形及び正方形以外の形状であるフリーフォームディスプレイ（ＦＦＤ）であってもよいし、画像表示領域１及び液晶パネル１０の各形状が長方形又は正方形であるディスプレイであってもよい。これらの形状に特に制約はなく、例えば、図１に示すような長方形の隣接する２つの角が丸められた形、長方形、正方形、円形又は楕円形、その他の複雑な形状であってもよい。 (Embodiment 1)
FIG. 1 is a schematic plan view of the liquid crystal display device according to the first embodiment.
As shown in FIG. 1, the liquid crystal display device 100 according to the first embodiment includes a liquid crystal panel 10 and has an image display region 1 having an arbitrary shape. The planar shapes of the external shapes of the liquid crystal display device 100 and the liquid crystal panel 10 are designed to be substantially the same as the image display region 1. As shown in FIG. 1, the liquid crystal display device 100 may be a free-form display (FFD) in which the shapes of the image display area 1 and the liquid crystal panel 10 are shapes other than a rectangle and a square. And the display whose each shape of the liquid crystal panel 10 is a rectangle or a square may be sufficient. These shapes are not particularly limited, and may be, for example, a shape in which two adjacent corners of a rectangle are rounded as shown in FIG. 1, a rectangle, a square, a circle or an ellipse, or other complex shapes.
画像表示領域１は、画像が表示される領域（アクティブエリア）であり、画像表示領域１の周囲には画像が表示されない額縁領域（画像非表示領域）２が設けられている。液晶パネル１０は、画像表示領域１に対応する画像表示部１１と、額縁領域２に対応する額縁部（画像表示部）１２とを含んでいる。画像表示部１１には複数の画素（図示せず）がマトリクス状に設けられている。額縁部１２は、画像表示部１１を囲むように枠状に設けられており、額縁部１２には、シール材（図示せず）等の部材が設けられている。 The image display area 1 is an area where an image is displayed (active area), and a frame area (image non-display area) 2 where no image is displayed is provided around the image display area 1. The liquid crystal panel 10 includes an image display unit 11 corresponding to the image display region 1 and a frame portion (image display unit) 12 corresponding to the frame region 2. The image display unit 11 is provided with a plurality of pixels (not shown) in a matrix. The frame portion 12 is provided in a frame shape so as to surround the image display portion 11, and the frame portion 12 is provided with a member such as a seal material (not shown).
図２は、実施形態１に係る液晶表示装置の断面模式図であり、図１中のＡ１－Ａ２線断面を示す。
図１及び２に示すように、液晶表示装置１００は、液晶パネル１０と重なるように配置され、液晶パネル１０と実質的に同じ平面形状を有するバックライト２０を更に備えている。なお、液晶表示装置１００は、これらの部材の他に、一般的な各種の回路及び電子部品を備えている。 2 is a schematic cross-sectional view of the liquid crystal display device according to Embodiment 1, and shows a cross section taken along line A1-A2 in FIG.
As shown in FIGS. 1 and 2, the liquid crystal display device 100 further includes a backlight 20 that is disposed so as to overlap the liquid crystal panel 10 and has substantially the same planar shape as the liquid crystal panel 10. The liquid crystal display device 100 includes various general circuits and electronic components in addition to these members.
液晶パネル１０は、例えば、ＴＦＴ基板（図示せず）と、ＴＦＴ基板に対向するＣＦ基板（図示せず）と、これらの２枚の基板の間に設けられた液晶層（図示せず）とを有している。また、各基板の液晶層とは反対側の面には、特定の方向の偏光を透過させる偏光板がそれぞれ設けられている。 The liquid crystal panel 10 includes, for example, a TFT substrate (not shown), a CF substrate (not shown) facing the TFT substrate, and a liquid crystal layer (not shown) provided between these two substrates. have. A polarizing plate that transmits polarized light in a specific direction is provided on the surface of each substrate opposite to the liquid crystal layer.
図２に示すように、バックライト２０は、平板状の導光板２１と、導光板２１の一側面に対向するように配されたＬＥＤ等の光源（図示せず）と、導光板２１の背面に設けられた反射シート等の反射部（図示せず）と、導光板２１上の光学シート２２と、これらを収容するバックライトケース２３とを含んでいる。これらの導光板２１、光源、反射部及び光学シート２２は、それぞれ、一般的なものと同様の機能及び構造を有している。光学シート２２の具体例としては、例えばプリズムシート、拡散シート等のシートが挙げられ、これらの複数枚のシートを光学シート２２として配置してもよい。 As shown in FIG. 2, the backlight 20 includes a flat light guide plate 21, a light source (not shown) such as an LED arranged to face one side of the light guide plate 21, and the back surface of the light guide plate 21. A reflection portion (not shown) such as a reflection sheet, an optical sheet 22 on the light guide plate 21, and a backlight case 23 for housing these. Each of the light guide plate 21, the light source, the reflection part, and the optical sheet 22 has the same function and structure as a general one. Specific examples of the optical sheet 22 include sheets such as a prism sheet and a diffusion sheet, and a plurality of these sheets may be arranged as the optical sheet 22.
バックライトケース２３は、観察者側の面が開口した扁平の箱状に形成されており、背面側の平板部２４と、平板部２４の周縁部から垂直方向に立ち上がる側壁部２５と、観察者側の開口部２６とを含んでいる。側壁部２５は、平板部２４を囲むように設けられており、平板部２４及び側壁部２５によって形成された空間内に、光源、反射部、導光板２１及び光学シート２２は配置されている。平板部２４及び側壁部２５には、それぞれ貫通口や切込み等の開口部は設けられておらず、これにより、バックライト２０の変形を抑制するとともに、バックライトケース２３内にゴミ等の異物が侵入することを防止している。バックライトケース２３の材質としては、例えば、金属、樹脂等が挙げられ、金属の場合は、削り出し、ダイキャスト等の方法により、樹脂の場合は、一般的な成形方法により、それぞれバックライトケース２３を作製することが可能である。これらの方法によれば、バックライトケース２３の側壁部２５等の全ての部分を一体的に形成することができる。他方、バックライトケース２３は、金属（例えば板金）から形成された部分と、樹脂から形成された部分とを含んでいてもよく、そのようなバックライトケース２３は、アウトサート成型等の方法により、作製することが可能である。 The backlight case 23 is formed in a flat box shape having an opening on the viewer side, and includes a flat plate portion 24 on the back side, a side wall portion 25 rising vertically from the peripheral edge of the flat plate portion 24, and an observer. Side opening 26. The side wall portion 25 is provided so as to surround the flat plate portion 24, and the light source, the reflection portion, the light guide plate 21, and the optical sheet 22 are arranged in a space formed by the flat plate portion 24 and the side wall portion 25. The flat plate portion 24 and the side wall portion 25 are not provided with openings such as through holes and cuts, respectively, thereby suppressing the deformation of the backlight 20 and preventing foreign matters such as dust in the backlight case 23. Preventing intrusion. Examples of the material of the backlight case 23 include metal, resin, and the like. In the case of metal, the backlight case 23 is formed by a method such as cutting and die casting. In the case of resin, the backlight case 23 is formed by a general molding method. 23 can be produced. According to these methods, all the parts such as the side wall portion 25 of the backlight case 23 can be integrally formed. On the other hand, the backlight case 23 may include a portion formed from a metal (for example, a sheet metal) and a portion formed from a resin, and such a backlight case 23 is formed by a method such as outsert molding. Can be produced.
図１及び２に示すように、液晶パネル１０は、バックライトケース２３内の各部材を覆うようにバックライトケース２３の開口部２６（開口した観察者側の面）に嵌め込まれており、液晶パネル１０の側面（端面）は、各々、側壁部２５の内壁（内側）２５ａに対向している。 As shown in FIGS. 1 and 2, the liquid crystal panel 10 is fitted into the opening 26 (the surface on the opened observer side) of the backlight case 23 so as to cover each member in the backlight case 23. Each side surface (end surface) of the panel 10 faces the inner wall (inner side) 25 a of the side wall portion 25.
図２に示すように、側壁部２５の内壁２５ａの全周には、液晶パネル１０の額縁部１２を嵌め込み可能な形状に形成されたパネル保持部２７が設けられている。そして、パネル保持部２７に額縁部１２が嵌め込まれることによって、液晶パネル１０がバックライトケース２３に保持及び固定されている。パネル保持部２７は、好適には、側壁部２５の端部（平板部２４から最も遠い部分）に位置している。 As shown in FIG. 2, a panel holding portion 27 formed in a shape capable of fitting the frame portion 12 of the liquid crystal panel 10 is provided on the entire circumference of the inner wall 25 a of the side wall portion 25. The liquid crystal panel 10 is held and fixed to the backlight case 23 by fitting the frame portion 12 into the panel holding portion 27. The panel holding part 27 is preferably located at the end of the side wall part 25 (the part farthest from the flat plate part 24).
パネル保持部２７は、互いに平行に所定の間隔を空けて直線状に形成された２列の凸条部２８ａ及び２８ｂを含んでおり、これらの凸条部２８ａ及び２８ｂの間の隙間に額縁部１２が嵌め込まれている。したがって、凸条部２８ａ（上記第１の凸条部に対応）及び凸条部２８ｂ（上記第２の凸条部に対応）は、それぞれ、額縁部１２の観察者側（前面）及び後方側（背面）に沿って延在している。凸条部２８ａ及び２８ｂの間隔は、額縁部１２の厚みと略同一に設定されている。各凸条部２８ａ、２８ｂの幅は、各凸条部２８ａ、２８ｂが画像表示領域１に干渉せずに額縁領域２内に配置される限り、特に限定されず、適宜、設定することが可能である。 The panel holding portion 27 includes two rows of protruding ridge portions 28a and 28b formed in a straight line in parallel with each other at a predetermined interval, and a frame portion is formed in a gap between the protruding ridge portions 28a and 28b. 12 is fitted. Accordingly, the ridge 28a (corresponding to the first ridge) and the ridge 28b (corresponding to the second ridge) are respectively the observer side (front surface) and the rear side of the frame portion 12. It extends along (the back). The interval between the ridges 28 a and 28 b is set to be approximately the same as the thickness of the frame portion 12. The width of each protrusion 28a, 28b is not particularly limited as long as each protrusion 28a, 28b is arranged in the frame area 2 without interfering with the image display area 1, and can be set as appropriate. It is.
図３は、実施形態１に係る液晶表示装置の断面模式図であり、パネル保持部及び額縁部を含む部分を拡大して示す。図４は、実施形態１に係る液晶表示装置の断面模式図であり、図３中のＢ１－Ｂ２線断面を示す。
各凸条部２８ａ、２８ｂの額縁部１２側の表面は平坦であり、図３及び４に示すように、これらの平坦な表面が額縁部１２を支持している。すなわち、パネル保持部２７は、平面（平坦な表面）で額縁部１２に当てられている。 FIG. 3 is a schematic cross-sectional view of the liquid crystal display device according to Embodiment 1, and shows an enlarged portion including a panel holding portion and a frame portion. 4 is a schematic cross-sectional view of the liquid crystal display device according to Embodiment 1, and shows a cross section taken along line B1-B2 in FIG.
The surface on the side of the frame portion 12 of each ridge 28a, 28b is flat, and these flat surfaces support the frame portion 12 as shown in FIGS. That is, the panel holding part 27 is applied to the frame part 12 in a plane (flat surface).
より強固に液晶パネル１０をバックライト２０に固定する観点からは、パネル保持部２７は、液晶パネル１０の周囲全体に設けられることが好ましい。例えば、図１に示される形状の場合、液晶パネル１０は、４つの直線状の側面と、２つの円弧状の側面とを有するが、パネル保持部２７は、これらの各側面の全体に沿って配されることが好ましい。しかしながら、パネル保持部２７の配置場所は、特に限定されない。液晶表示装置１００がＦＦＤであり、液晶パネル１０の外形が複雑な場合や、それ以外の理由がある場合等では、例えば、複数のパネル保持部２７を、液晶パネル１０の周囲の複数の箇所に部分的に設けてもよいし、また、これらの複数のパネル保持部２７を液晶パネル１０の周囲に均等に配置してもよい。 From the viewpoint of fixing the liquid crystal panel 10 to the backlight 20 more firmly, it is preferable that the panel holding portion 27 is provided on the entire periphery of the liquid crystal panel 10. For example, in the case of the shape shown in FIG. 1, the liquid crystal panel 10 has four straight side surfaces and two arc-shaped side surfaces, but the panel holding portion 27 extends along the entire side surfaces. It is preferable to be arranged. However, the arrangement location of the panel holding part 27 is not particularly limited. In the case where the liquid crystal display device 100 is an FFD and the outer shape of the liquid crystal panel 10 is complicated or there are other reasons, for example, the plurality of panel holding portions 27 are disposed at a plurality of locations around the liquid crystal panel 10. The plurality of panel holding portions 27 may be provided evenly around the liquid crystal panel 10.
以上、説明したように、本実施形態の液晶表示装置１００は、液晶パネル１０、及び、バックライト２０を備えており、液晶パネル１０は、画像表示部１１と、画像表示部１１の周囲の額縁部１２とを含んでおり、バックライト２０は、液晶パネル１０の後方に位置する光学シート２２と、光学シート２２の後方に位置する導光板２１と、バックライトケース２３とを含んでおり、バックライトケース２３は、観察者側の面が開口した箱体であり、平板部２４と、平板部２４から立ち上がる側壁部２５とを含んでおり、光学シート２２、及び、導光板２１は、バックライトケース２３内に収容されており、側壁部２５の内壁２５ａには、額縁部１２を嵌め込み可能な形状に形成されたパネル保持部２７が設けられており、パネル保持部２７に額縁部１２が嵌め込まれている。 As described above, the liquid crystal display device 100 of the present embodiment includes the liquid crystal panel 10 and the backlight 20, and the liquid crystal panel 10 includes the image display unit 11 and the frame around the image display unit 11. The backlight 20 includes an optical sheet 22 positioned behind the liquid crystal panel 10, a light guide plate 21 positioned behind the optical sheet 22, and a backlight case 23. The light case 23 is a box having an opening on the viewer side, and includes a flat plate portion 24 and a side wall portion 25 rising from the flat plate portion 24. The optical sheet 22 and the light guide plate 21 include a backlight. A panel holding portion 27 formed in a shape in which the frame portion 12 can be fitted is provided on the inner wall 25 a of the side wall portion 25, which is accommodated in the case 23. Edge 12 is fitted.
このように、側壁部２５の内壁２５ａには、額縁部１２を嵌め込み可能な形状に形成されたパネル保持部２７が設けられており、パネル保持部２７に額縁部１２が嵌め込まれているため、液晶表示装置１００の額縁領域２の幅は、バックライトケース２３の側壁部２５の板厚と、液晶パネル１０の額縁部１２の幅との合計になる。したがって、劇的な狭額縁化、すなわち、額縁領域（画像非表示領域）２の幅の劇的な減少が可能である。また、液晶パネル１０をバックライトケース２３に強固に固定することが可能である。 As described above, the inner wall 25a of the side wall portion 25 is provided with the panel holding portion 27 formed in a shape capable of fitting the frame portion 12, and the frame portion 12 is fitted into the panel holding portion 27. The width of the frame region 2 of the liquid crystal display device 100 is the sum of the plate thickness of the side wall portion 25 of the backlight case 23 and the width of the frame portion 12 of the liquid crystal panel 10. Therefore, dramatic narrowing of the frame, that is, dramatic reduction of the width of the frame area (image non-display area) 2 is possible. Further, the liquid crystal panel 10 can be firmly fixed to the backlight case 23.
更に、接着剤等の硬化性接着部材を用いることなく、液晶パネル１０をバックライトケース２３に固定することが可能であるため、硬化性接着部材に起因する不具合の発生を防止することが可能である。例えば、接着剤が光学シート２２及び導光板２１に接触した場合、毛細管現象により接着剤が光学シート２２及び導光板２１の間に浸入して画像表示領域１にまで到達すると、バックライト２０の発光面において輝度ムラが生じ、その結果、液晶表示装置１００の表示面において表示ムラが生じてしまう。また、硬化性接着部材からアウトガス（硬化性接着部材の硬化時及び／又は硬化後に発生する揮発性の有機又は無機ガス）が発生し、金属部分が腐食するおそれがある。 Furthermore, since it is possible to fix the liquid crystal panel 10 to the backlight case 23 without using a curable adhesive member such as an adhesive, it is possible to prevent the occurrence of problems caused by the curable adhesive member. is there. For example, when the adhesive comes into contact with the optical sheet 22 and the light guide plate 21, when the adhesive enters between the optical sheet 22 and the light guide plate 21 and reaches the image display region 1 by capillary action, the light emission of the backlight 20 is performed. As a result, uneven brightness occurs on the display surface, and as a result, uneven display occurs on the display surface of the liquid crystal display device 100. Further, outgas (a volatile organic or inorganic gas generated during and / or after curing of the curable adhesive member) is generated from the curable adhesive member, and the metal portion may be corroded.
他方、特許文献２に記載の表示装置、特に第１、第３及び第４の実施の形態では、スペーサを配置して接着部の形成領域を区画しているが、接着部の材料（接着剤）は、背面部材、前面部材及び表示パネルの外周部分に接触するように該区画領域内に充填されるため、接着剤がスペーサの内側に浸入して光学シート及び導光板に接触するおそれがある。その場合、毛細管現象により接着剤が導光板及び光学シートの間に浸入して表示領域にまで到達すると、バックライトの発光面において輝度ムラが生じ、その結果、表示装置の表示面において表示ムラが生じてしまう。複数の光学シートが設けられる場合は隣接する光学シートの間に接着剤が浸入する可能性もある。また、接着剤からアウトガスが発生し、金属部分が腐食するおそれがある。 On the other hand, in the display device described in Patent Document 2, in particular, the first, third, and fourth embodiments, the spacer is disposed to partition the formation region of the bonding portion, but the material of the bonding portion (adhesive) ) Is filled in the partition region so as to come into contact with the outer peripheral portion of the back member, the front member, and the display panel, so that the adhesive may enter the spacer and come into contact with the optical sheet and the light guide plate. . In that case, when the adhesive penetrates between the light guide plate and the optical sheet and reaches the display area due to capillary action, luminance unevenness occurs on the light emitting surface of the backlight, and as a result, display unevenness occurs on the display surface of the display device. It will occur. In the case where a plurality of optical sheets are provided, the adhesive may enter between adjacent optical sheets. Further, outgas is generated from the adhesive, and the metal part may be corroded.
また、特許文献３に記載の表示装置では、第二の接着材料が液晶パネルと板状体との間隙に浸入しないように、粘着材等の流れ止め部材が配置されているが、流れ止め部材の内側に第二の接着材料が浸入する可能性がないとは言い切れない。その場合は、上記の場合と同様に、輝度ムラ及び表示ムラが発生してしまう。また、第二の接着材料からアウトガスが発生し、金属部分が腐食するおそれがある。 Further, in the display device described in Patent Document 3, a flow-preventing member such as an adhesive is disposed so that the second adhesive material does not enter the gap between the liquid crystal panel and the plate-like body. It cannot be said that there is no possibility of the second adhesive material intruding inside. In that case, as in the case described above, luminance unevenness and display unevenness occur. Further, outgas is generated from the second adhesive material, and the metal part may be corroded.
以下、本実施形態における好ましい変形例について説明する。 Hereinafter, a preferred modification of the present embodiment will be described.
図５は、実施形態１の第一の変形例に係る液晶表示装置の断面模式図である。
パネル保持部２７の形状は、液晶パネル１０の額縁部１２を嵌め込み可能な形状である限り、特に限定されない。例えば、図５に示すように、パネル保持部２７は、額縁部１２に沿って直線状に形成された１列の凹条部２９を含んでいてもよく、この凹条部２９に額縁部１２が嵌め込まれていてもよい。この構造によれば、額縁部１２が非常に狭い場合でもパネル保持部２７によって額縁部１２を保持することができるため、図２を用いて説明した構造に比べて、額縁領域２をより狭くすることが可能である。バックライト２０の奥行き方向（厚み方向）における凹条部２９の幅は、額縁部１２の厚みと略同一に設定されている。凹条部２９の深さは、側壁部２５が画像表示領域１に干渉せずに額縁領域２内に配置される限り、特に限定されず、適宜、設定することが可能である。 FIG. 5 is a schematic cross-sectional view of a liquid crystal display device according to a first modification of the first embodiment.
The shape of the panel holding part 27 is not particularly limited as long as the frame part 12 of the liquid crystal panel 10 can be fitted. For example, as shown in FIG. 5, the panel holding part 27 may include a row of concave line parts 29 formed linearly along the frame part 12, and the frame part 12 is included in the concave line part 29. May be fitted. According to this structure, even when the frame portion 12 is very narrow, the frame portion 12 can be held by the panel holding portion 27. Therefore, the frame region 2 is made narrower than the structure described with reference to FIG. It is possible. The width of the concave stripe portion 29 in the depth direction (thickness direction) of the backlight 20 is set to be substantially the same as the thickness of the frame portion 12. The depth of the concave portion 29 is not particularly limited as long as the side wall portion 25 is disposed in the frame region 2 without interfering with the image display region 1, and can be set as appropriate.
図２～５を用いて説明した構造では、パネル保持部２７の額縁部１２が嵌め込まれる部分の形状は、額縁部１２の形状とぴったり合っており、パネル保持部２７と額縁部１２との間には隙間が設けられていなかったが、パネル保持部２７及び額縁部１２の間には部分的に隙間が設けられていてもよい。また、図２～５を用いて説明した構造では、パネル保持部２７の平坦部（平坦な表面）を額縁部１２に当てていたが、パネル保持部２７を点状又は線状の部分で額縁部１２に当ててもよい。液晶パネル１０が接する面の平面度の影響により、液晶パネル１０の光学特性の一部が悪化するという不具合が発生する場合があるが、その影響を少なくする観点からは、面接触より、線又は点接触の方が好ましい。その例を以下に示す。 In the structure described with reference to FIGS. 2 to 5, the shape of the portion in which the frame portion 12 of the panel holding portion 27 is fitted closely matches the shape of the frame portion 12, and the space between the panel holding portion 27 and the frame portion 12 is the same. Although no gap was provided, the gap may be partially provided between the panel holding portion 27 and the frame portion 12. In the structure described with reference to FIGS. 2 to 5, the flat portion (flat surface) of the panel holding portion 27 is applied to the frame portion 12. However, the panel holding portion 27 is framed by a dotted or linear portion. It may be applied to part 12. There may be a problem that a part of the optical characteristics of the liquid crystal panel 10 deteriorates due to the influence of the flatness of the surface with which the liquid crystal panel 10 is in contact. From the viewpoint of reducing the influence, a line or Point contact is preferred. An example is shown below.
図６は、実施形態１の第二の変形例に係る液晶表示装置の断面模式図であり、パネル保持部及び額縁部を含む部分を拡大して示す。図７は、実施形態１の第二の変形例に係る液晶表示装置の断面模式図であり、図６中のＣ１－Ｃ２線断面を示す。
図６及び７に示すように、各凸条部２８ａ、２８ｂの額縁部１２側の表面には、複数の突起部３０が設けられていてもよく、これらの突起部３０の各頂点部３１によって額縁部１２が支持されていてもよい。これにより、バックライトケース２３が歪んでいる場合に、その歪みが液晶パネル１０に伝わりにくくすることができ、光学特性の一部の悪化という上記不具合を発生しにくくすることができる。このように、パネル保持部２７の点状の部分（各凸条部２８ａ、２８ｂの頂点部３１）を額縁部１２に当ててもよい。各突起部３０の形状は特に限定されず、図６及び７に示すような球冠状の他、半球状、楕円球状、円錐状等が挙げられる。 FIG. 6 is a schematic cross-sectional view of a liquid crystal display device according to a second modification of the first embodiment, and shows an enlarged portion including a panel holding portion and a frame portion. FIG. 7 is a schematic cross-sectional view of a liquid crystal display device according to a second modification of the first embodiment, and shows a cross section taken along line C1-C2 in FIG.
As shown in FIGS. 6 and 7, a plurality of protrusions 30 may be provided on the surface of the ridges 28 a and 28 b on the frame part 12 side. The frame portion 12 may be supported. Thereby, when the backlight case 23 is distorted, the distortion can be made difficult to be transmitted to the liquid crystal panel 10, and the above-described problem of partial deterioration of optical characteristics can be made difficult to occur. As described above, the dot-like portion of the panel holding portion 27 (the apex portion 31 of each protruding line portion 28a, 28b) may be applied to the frame portion 12. The shape of each protrusion 30 is not particularly limited, and examples thereof include a hemispherical shape, an elliptical spherical shape, and a conical shape in addition to a spherical crown shape as shown in FIGS.
図８は、実施形態１の第三の変形例に係る液晶表示装置の断面模式図であり、パネル保持部及び額縁部を含む部分を拡大して示す。図９は、実施形態１の第三の変形例に係る液晶表示装置の断面模式図であり、図８中のＤ１－Ｄ２線断面を示す。
図８及び９に示すように、各凸条部２８ａ、２８ｂの額縁部１２側の表面には、複数の凸条部３２が設けられていてもよく、これらの凸条部３２の各稜線部３３によって額縁部１２が支持されていてもよい。これにより、バックライトケース２３が歪んでいる場合に、その歪みが液晶パネル１０に伝わりにくくすることができ、光学特性の一部の悪化という上記不具合を発生しにくくすることができる。このように、パネル保持部２７の線状の部分（各凸条部２８ａ、２８ｂの稜線部３３）を額縁部１２に当ててもよい。隣り合う２つ凸条部３２は、隙間なく配置されており、各凸条部３２の稜線部３３は、側壁部２５と交差する方向、例えば側壁部２５と直交する方向に延在している。各凸条部３２の形状は特に限定されず、図８及び９に示すような断面視三角形状の他、断面視波状等が挙げられる。 FIG. 8 is a schematic cross-sectional view of a liquid crystal display device according to a third modification of Embodiment 1, and shows an enlarged portion including a panel holding portion and a frame portion. FIG. 9 is a schematic cross-sectional view of a liquid crystal display device according to a third modification of Embodiment 1, and shows a cross section taken along line D1-D2 in FIG.
As shown in FIGS. 8 and 9, a plurality of ridges 32 may be provided on the surface of the ridges 28 a and 28 b on the frame part 12 side, and each ridge line part of these ridges 32 is provided. The frame portion 12 may be supported by 33. Thereby, when the backlight case 23 is distorted, the distortion can be made difficult to be transmitted to the liquid crystal panel 10, and the above-described problem of partial deterioration of optical characteristics can be made difficult to occur. As described above, the linear portion of the panel holding portion 27 (the ridge line portion 33 of each of the ridge portions 28a and 28b) may be applied to the frame portion 12. Two adjacent ridge portions 32 are arranged without a gap, and the ridge line portion 33 of each ridge portion 32 extends in a direction intersecting with the side wall portion 25, for example, in a direction orthogonal to the side wall portion 25. . The shape of each ridge portion 32 is not particularly limited, and examples thereof include a triangular shape in cross section as shown in FIGS.
図１０は、実施形態１の第四の変形例に係る液晶表示装置の断面模式図である。
図１０に示すように、液晶パネル１０及びバックライトケース２３の間、より詳細には、額縁部１２及びパネル保持部２７の間には、弾性を有する緩衝部材３が配されてもよい。上述の方法で液晶パネル１０をバックライト２０に固定する場合、バックライトケース２３から液晶パネル１０に伝わる応力に起因して液晶パネル１０の表示性能が劣化することがある。しかしながら、液晶パネル１０及びバックライトケース２３の間に弾性を有する緩衝部材３を配することによって、そのような表示性能の劣化を防止することができる。 FIG. 10 is a schematic cross-sectional view of a liquid crystal display device according to a fourth modification of the first embodiment.
As shown in FIG. 10, an elastic buffer member 3 may be disposed between the liquid crystal panel 10 and the backlight case 23, more specifically, between the frame portion 12 and the panel holding portion 27. When the liquid crystal panel 10 is fixed to the backlight 20 by the above-described method, the display performance of the liquid crystal panel 10 may be deteriorated due to the stress transmitted from the backlight case 23 to the liquid crystal panel 10. However, by disposing the elastic buffer member 3 between the liquid crystal panel 10 and the backlight case 23, it is possible to prevent such deterioration in display performance.
なお、本明細書において、弾性を有する緩衝部材３の材質は特に限定されず、例えば、ゴム等のエラストマーが挙げられる。 In this specification, the material of the elastic buffer member 3 is not particularly limited, and examples thereof include elastomers such as rubber.
図１１及び１２は、それぞれ、実施形態１の第五及び第六の変形例に係る液晶表示装置の断面模式図である。
図１１及び１２に示すように、液晶パネル１０は、光学シート２２との間に隙間が発生しないように配置されていてもよく、光学シート２２全体に接していてもよい。 11 and 12 are schematic cross-sectional views of liquid crystal display devices according to fifth and sixth modifications of Embodiment 1, respectively.
As shown in FIGS. 11 and 12, the liquid crystal panel 10 may be disposed so as not to generate a gap with the optical sheet 22, or may be in contact with the entire optical sheet 22.
このように、液晶パネル１０が光学シート２２に接することによって、液晶パネル１０がバックライト２０の奥行き方向に必要以上に入らないようにすることが可能である。 As described above, the liquid crystal panel 10 is in contact with the optical sheet 22, so that the liquid crystal panel 10 can be prevented from entering more than necessary in the depth direction of the backlight 20.
また、液晶パネル１０が光学シート２２に接する場合は、図１２に示すように、パネル保持部２７は、凸条部２８ｂを含まず、凸条部２８ａを含んでいてもよい。そして、凸条部２８ａの背面側の空間に額縁部１２が嵌め込まれてもよい。光学シート２２上に配された液晶パネル１０の額縁部１２が凸条部２８ａに観察者側から押さえられることによって、液晶パネル１０がバックライト２０に保持されている。凸条部２８ａの幅は、凸条部２８が画像表示領域１に干渉せずに額縁領域２内に配置される限り、特に限定されず、適宜、設定することが可能である。 Further, when the liquid crystal panel 10 is in contact with the optical sheet 22, as shown in FIG. 12, the panel holding portion 27 may not include the protruding strip portion 28b but may include the protruding strip portion 28a. And the frame part 12 may be engage | inserted in the space on the back side of the protruding item | line part 28a. The liquid crystal panel 10 is held by the backlight 20 by the frame portion 12 of the liquid crystal panel 10 disposed on the optical sheet 22 being pressed from the observer side by the ridge 28a. The width of the ridge 28a is not particularly limited as long as the ridge 28 is arranged in the frame area 2 without interfering with the image display area 1, and can be set as appropriate.
図２及び１２に示したように、パネル保持部２７が、額縁部１２の観察者側（前面）に沿って設けられた直線状の凸条部２８ａを含むことによって、凸条部２８ａと側壁部２５とによって一体的に額縁部１２を遮蔽することができる。そのため、額縁領域２における光漏れの発生を効果的に防止することが可能である。 As shown in FIGS. 2 and 12, the panel holding portion 27 includes a straight protruding portion 28 a provided along the observer side (front surface) of the frame portion 12, thereby providing a protruding portion 28 a and a side wall. The frame portion 12 can be shielded integrally with the portion 25. Therefore, it is possible to effectively prevent light leakage in the frame region 2.
図１３及び１４は、それぞれ、実施形態１の第七及び第八の変形例に係る液晶表示装置の断面模式図である。
図１３及び１４に示すように、液晶パネル１０が光学シート２２に接する場合においても、液晶パネル１０及びバックライトケース２３の間、より詳細には、額縁部１２及びパネル保持部２７の間には、弾性を有する緩衝部材３が配されてもよい。 13 and 14 are schematic cross-sectional views of liquid crystal display devices according to seventh and eighth modifications of Embodiment 1, respectively.
As shown in FIGS. 13 and 14, even when the liquid crystal panel 10 is in contact with the optical sheet 22, between the liquid crystal panel 10 and the backlight case 23, more specifically, between the frame portion 12 and the panel holding portion 27. The buffer member 3 having elasticity may be disposed.
（実施形態２）
本実施形態では、本実施形態に特有の特徴について主に説明し、実施形態１と重複する内容については説明を省略する。また、本実施形態と実施形態１とにおいて、同一又は同様の機能を有する部材には同一の符号を付し、本実施形態において、その部材の説明は省略する。本実施形態は、以下で説明する点を除いて、実施形態１と実質的に同じである。 (Embodiment 2)
In the present embodiment, features unique to the present embodiment will be mainly described, and the description overlapping with the first embodiment will be omitted. Moreover, in this embodiment and Embodiment 1, the same code | symbol is attached | subjected to the member which has the same or the same function, and description of the member is abbreviate | omitted in this embodiment. The present embodiment is substantially the same as the first embodiment except for the points described below.
図１５は、実施形態２に係る液晶表示装置の断面模式図である。
図１５に示すように、本実施形態に係る液晶表示装置２００は、液晶パネル１０をバックライトケース２３に固定するパネル固定部材４０を更に備えている。本実施形態では、バックライトケース２３の側壁部２５の内壁２５ａに液晶パネル１０を嵌め込むのではなく、液晶パネル１０を側壁部２５の端部（平板部２４から最も遠い部分）上に配置している。より詳細には、液晶パネル１０の額縁部１２を側壁部２５の端面（上面、平板部２４から最も遠い面）上に配置している。そして、パネル固定部材４０で額縁部１２を観察者側から押さえた状態でパネル固定部材４０をバックライトケース２３に固定している。このようにパネル固定部材４０及び側壁部２５によって額縁部１２を挟持することによって、液晶パネル１０がバックライトケース２３に保持及び固定されている。 FIG. 15 is a schematic cross-sectional view of the liquid crystal display device according to the second embodiment.
As shown in FIG. 15, the liquid crystal display device 200 according to the present embodiment further includes a panel fixing member 40 that fixes the liquid crystal panel 10 to the backlight case 23. In the present embodiment, the liquid crystal panel 10 is not placed on the inner wall 25a of the side wall portion 25 of the backlight case 23, but the liquid crystal panel 10 is disposed on the end portion (the portion farthest from the flat plate portion 24) of the side wall portion 25. ing. More specifically, the frame portion 12 of the liquid crystal panel 10 is disposed on the end surface (the upper surface, the surface farthest from the flat plate portion 24) of the side wall portion 25. And the panel fixing member 40 is being fixed to the backlight case 23 in the state which pressed down the frame part 12 with the panel fixing member 40 from the observer side. Thus, the liquid crystal panel 10 is held and fixed to the backlight case 23 by sandwiching the frame portion 12 by the panel fixing member 40 and the side wall portion 25.
パネル固定部材４０の配置場所は、特に限定されないが、より強固に液晶パネル１０をバックライト２０に固定する観点からは、パネル固定部材４０は、液晶パネル１０の周囲全体に配置されることが好ましい。例えば、図１に示される形状の場合、液晶パネル１０は、４つの直線状の側面と、２つの円弧状の側面とを有するが、パネル固定部材４０は、これらの各側面の全体に対向するように配されることが好ましい。パネル固定部材４０を液晶パネル１０の周囲全体に配置する場合、一体的に形成された１つの枠状のパネル固定部材４０を配置してもよいし、対応する箇所に適合するように各々形成された複数のパネル固定部材４０を組み合わせて用いてもよい。他方、液晶表示装置２００がＦＦＤであり、液晶パネル１０の外形が複雑な場合や、それ以外の理由がある場合等では、例えば、液晶パネル１０の周囲の複数の箇所に複数のパネル固定部材４０を互いに離間させて設けてもよいし、また、これらの複数のパネル固定部材４０を液晶パネル１０の周囲に均等に配置してもよい。 The arrangement location of the panel fixing member 40 is not particularly limited, but from the viewpoint of fixing the liquid crystal panel 10 to the backlight 20 more firmly, the panel fixing member 40 is preferably arranged around the entire periphery of the liquid crystal panel 10. . For example, in the case of the shape shown in FIG. 1, the liquid crystal panel 10 has four linear side surfaces and two arc-shaped side surfaces, but the panel fixing member 40 is opposed to each of these side surfaces. It is preferable to be arranged as follows. When the panel fixing member 40 is disposed around the entire periphery of the liquid crystal panel 10, one integrally formed frame-shaped panel fixing member 40 may be disposed, or each is formed so as to be adapted to a corresponding portion. A plurality of panel fixing members 40 may be used in combination. On the other hand, when the liquid crystal display device 200 is an FFD and the outer shape of the liquid crystal panel 10 is complicated or there are other reasons, for example, a plurality of panel fixing members 40 are provided at a plurality of locations around the liquid crystal panel 10. May be provided apart from each other, or the plurality of panel fixing members 40 may be equally arranged around the liquid crystal panel 10.
パネル固定部材４０は、例えば、プレス加工等の方法により金属プレートから形成されており、額縁部１２を観察者側から押さえるパネル押え部４１と、パネル押え部４１に連結され、バックライトケース２３に固定されたケース固定部４２とを含んでいる。パネル押え部４１は、液晶パネル１０の額縁部１２の観察者側の面に沿って設けられており、ケース固定部４２は、バックライトケース２３の外壁（外側）に沿って設けられている。なお、ケース固定部４２の固定手段は特に限定されず、例えば、接着部材、ネジ止め、爪嵌合等が挙げられる。 The panel fixing member 40 is formed of a metal plate by a method such as press working, for example, and is connected to the panel pressing portion 41 that presses the frame portion 12 from the observer side and the panel pressing portion 41, and is connected to the backlight case 23. And a fixed case fixing portion 42. The panel pressing portion 41 is provided along the surface on the viewer side of the frame portion 12 of the liquid crystal panel 10, and the case fixing portion 42 is provided along the outer wall (outer side) of the backlight case 23. In addition, the fixing means of the case fixing | fixed part 42 is not specifically limited, For example, an adhesive member, screwing, claw fitting etc. are mentioned.
パネル固定部材４０は、断面視略Ｌ字状の部材であり、パネル押え部４１及びケース固定部４２は、各々、板状であり、パネル押え部４１の端部にケース固定部４２が連結されている。また、パネル押え部４１は、ケース固定部４２に対して略９０°の角度となるように形成されている。パネル固定部材４０は、パネル押え部４１が液晶パネル１０の額縁部１２の観察者側の面に沿い、かつ、ケース固定部４２がバックライトケース２３の側壁部２５の外壁に沿うように、配されている。そして、パネル押え部４１が額縁部１２に当接した状態で、ケース固定部４２がバックライトケース２３の側壁部２５の外壁に固定されている。 The panel fixing member 40 is a substantially L-shaped member in cross section, and the panel pressing portion 41 and the case fixing portion 42 are each plate-shaped, and the case fixing portion 42 is connected to the end of the panel pressing portion 41. ing. Further, the panel pressing portion 41 is formed to have an angle of about 90 ° with respect to the case fixing portion 42. The panel fixing member 40 is arranged so that the panel pressing portion 41 is along the viewer side surface of the frame portion 12 of the liquid crystal panel 10 and the case fixing portion 42 is along the outer wall of the side wall portion 25 of the backlight case 23. Has been. The case fixing portion 42 is fixed to the outer wall of the side wall portion 25 of the backlight case 23 with the panel pressing portion 41 in contact with the frame portion 12.
図１６は、実施形態２の第一の変形例に係る液晶表示装置の断面模式図である。
パネル固定部材４０の形状は、図１５に示した形状に特に限定されない。例えば、図１６に示すように、パネル固定部材４０は、断面視略コの字状（Ｕ字状）であってもよい。この場合、ケース固定部４２は、断面視略Ｌ字状であり、各々板状の第一及び第二部分４２ａ及び４２ｂを含んでおり、第一部分４２ａの一端がパネル押え部４１の端部に連結され、第一部分４２ａの他端が第二部分４２ｂの端部に連結されている。パネル押え部４１及び第二部分４２ｂは、各々、第一部分４２ａに対して略９０°の角度となるように形成されている。パネル固定部材４０は、パネル押え部４１が液晶パネル１０の額縁部１２の観察者側の面に沿い、ケース固定部４２の第一部分４２ａがバックライトケース２３の側壁部２５の外壁に沿い、かつ、ケース固定部４２の第二部分４２ｂがバックライトケース２３の平板部２４の外壁に沿うように、配されている。そして、パネル押え部４１が額縁部１２に当接した状態で、パネル固定部材４０がバックライトケース２３に固定されている。なお、図１６に示す場合、パネル固定部材４０の固定手段は特に限定されず、例えば、接着部材、ネジ止め、爪嵌合等が挙げられる。これらの固定手段の配置場所は、特に限定されず、適宜設定することができる。また、パネル押え部４１及び第二部分４２ｂによって液晶パネル１０及びバックライトケース２３を挟み込むようにパネル固定部材４０を取り付け、この挟み込む力によってパネル固定部材４０をバックライトケース２３に固定してもよい。 FIG. 16 is a schematic cross-sectional view of a liquid crystal display device according to a first modification of the second embodiment.
The shape of the panel fixing member 40 is not particularly limited to the shape shown in FIG. For example, as shown in FIG. 16, the panel fixing member 40 may have a substantially U shape (U shape) in cross section. In this case, the case fixing portion 42 is substantially L-shaped in cross-section and includes plate-like first and second portions 42a and 42b, respectively, and one end of the first portion 42a is at the end of the panel pressing portion 41. The other end of the first portion 42a is connected to the end of the second portion 42b. The panel pressing portion 41 and the second portion 42b are each formed to have an angle of approximately 90 ° with respect to the first portion 42a. In the panel fixing member 40, the panel pressing portion 41 is along the viewer side surface of the frame portion 12 of the liquid crystal panel 10, the first portion 42a of the case fixing portion 42 is along the outer wall of the side wall portion 25 of the backlight case 23, and The second portion 42 b of the case fixing portion 42 is arranged along the outer wall of the flat plate portion 24 of the backlight case 23. The panel fixing member 40 is fixed to the backlight case 23 with the panel pressing portion 41 in contact with the frame portion 12. In addition, in the case shown in FIG. 16, the fixing means of the panel fixing member 40 is not specifically limited, For example, an adhesive member, screwing, claw fitting, etc. are mentioned. The location of these fixing means is not particularly limited and can be set as appropriate. Further, the panel fixing member 40 may be attached so as to sandwich the liquid crystal panel 10 and the backlight case 23 by the panel pressing portion 41 and the second portion 42b, and the panel fixing member 40 may be fixed to the backlight case 23 by the sandwiching force. .
なお、図１５又は１６のいずれのパネル固定部材４０を採用するかは、適宜選択可能である。例えば、液晶表示装置２００を他のシステムに組み込む場合、バックライトケース２３の背面又は側面の全体又は一部に一定面積の平面が要求されるか否かに応じて選択してもよい。 Note that which panel fixing member 40 of FIG. 15 or 16 is used can be selected as appropriate. For example, when the liquid crystal display device 200 is incorporated into another system, the liquid crystal display device 200 may be selected depending on whether a flat surface having a certain area is required for the entire back surface or the side surface of the backlight case 23.
以上、説明したように、本実施形態の液晶表示装置２００は、液晶パネル１０、バックライト２０、及び、パネル固定部材４０を備えており、液晶パネル１０は、画像表示部１１と、画像表示部１１の周囲の額縁部１２とを含んでおり、バックライト２０は、液晶パネル１０の後方に位置する光学シート２２と、光学シート２２の後方に位置する導光板２１と、バックライトケース２３とを含んでおり、バックライトケース２３は、観察者側の面が開口した箱体であり、平板部２４と、平板部２４から立ち上がる側壁部２５とを含んでおり、光学シート２２、及び、導光板２１は、バックライトケース２３内に収容されており、パネル固定部材４０は、額縁部１２を押さえるパネル押え部４１を含んでおり、かつ、バックライトケース２３に固定されており、額縁部１２は、パネル押え部４１及び側壁部２５に挟持されている。 As described above, the liquid crystal display device 200 of the present embodiment includes the liquid crystal panel 10, the backlight 20, and the panel fixing member 40. The liquid crystal panel 10 includes the image display unit 11 and the image display unit. 11, the backlight 20 includes an optical sheet 22 positioned behind the liquid crystal panel 10, a light guide plate 21 positioned behind the optical sheet 22, and a backlight case 23. The backlight case 23 is a box having an opening on the viewer side, and includes a flat plate portion 24 and a side wall portion 25 rising from the flat plate portion 24. The optical sheet 22 and the light guide plate 21 is housed in the backlight case 23, and the panel fixing member 40 includes a panel pressing portion 41 that presses the frame portion 12. Are constant, the frame portion 12 is clamped to the panel pressing portions 41 and the side wall portion 25.
このように、パネル固定部材４０は、額縁部１２を押さえるパネル押え部４１を含んでおり、かつ、バックライトケース２３に固定されており、額縁部１２は、パネル押え部４１及び側壁部２５に挟持されているため、液晶表示装置２００の額縁領域２の幅は、パネル固定部材４０の板厚と、液晶パネル１０の額縁部１２の幅との合計になる。したがって、劇的な狭額縁化、すなわち、額縁領域（画像非表示領域）２の劇的な減少が可能である。また、液晶パネル１０をバックライトケース２３に強固に固定することが可能である。 Thus, the panel fixing member 40 includes the panel pressing portion 41 that presses the frame portion 12 and is fixed to the backlight case 23, and the frame portion 12 is attached to the panel pressing portion 41 and the side wall portion 25. Since it is sandwiched, the width of the frame region 2 of the liquid crystal display device 200 is the sum of the plate thickness of the panel fixing member 40 and the width of the frame portion 12 of the liquid crystal panel 10. Therefore, dramatic narrowing of the frame, that is, dramatic reduction of the frame area (image non-display area) 2 is possible. Further, the liquid crystal panel 10 can be firmly fixed to the backlight case 23.
更に、接着剤等の硬化性接着部材を用いることなく、液晶パネル１０をバックライトケース２３に固定することが可能であるため、硬化性接着部材に起因する上述のような不具合の発生を防止することが可能である。 Furthermore, since it is possible to fix the liquid crystal panel 10 to the backlight case 23 without using a curable adhesive member such as an adhesive, the occurrence of the above-described problems caused by the curable adhesive member is prevented. It is possible.
図１７は、実施形態２の第二の変形例に係る液晶表示装置の断面模式図である。
図１７に示すように、液晶パネル１０及びバックライトケース２３の間（より詳細には、額縁部１２及び側壁部２５の間）と、液晶パネル１０及びパネル固定部材４０の間とには、弾性を有する緩衝部材３が配されてもよい。上述の方法で液晶パネル１０をバックライト２０に固定する場合、バックライトケース２３又はパネル固定部材４０から液晶パネル１０に伝わる応力に起因して液晶パネル１０の表示性能が劣化することがある。しかしながら、液晶パネル１０及びバックライトケース２３の間と、液晶パネル１０及びパネル固定部材４０の間とに、弾性を有する緩衝部材３を配することによって、そのような表示性能の劣化を防止することができる。 FIG. 17 is a schematic cross-sectional view of a liquid crystal display device according to a second modification of the second embodiment.
As shown in FIG. 17, there is elasticity between the liquid crystal panel 10 and the backlight case 23 (more specifically, between the frame portion 12 and the side wall portion 25) and between the liquid crystal panel 10 and the panel fixing member 40. A shock-absorbing member 3 may be disposed. When the liquid crystal panel 10 is fixed to the backlight 20 by the above-described method, the display performance of the liquid crystal panel 10 may be deteriorated due to the stress transmitted from the backlight case 23 or the panel fixing member 40 to the liquid crystal panel 10. However, by disposing the elastic buffer member 3 between the liquid crystal panel 10 and the backlight case 23 and between the liquid crystal panel 10 and the panel fixing member 40, such deterioration in display performance can be prevented. Can do.
図１８は、実施形態２の第三の変形例に係る液晶表示装置の断面模式図である。
図１８に示すように、液晶パネル１０は、光学シート２２との間に隙間が発生しないように配置されていてもよく、光学シート２２全体に接していてもよい。 FIG. 18 is a schematic cross-sectional view of a liquid crystal display device according to a third modification of the second embodiment.
As shown in FIG. 18, the liquid crystal panel 10 may be disposed so as not to generate a gap with the optical sheet 22, or may be in contact with the entire optical sheet 22.
このように、液晶パネル１０が光学シート２２に接することによって、液晶パネル１０がバックライト２０の奥行き方向に必要以上に入らないようにすることが可能である。 As described above, the liquid crystal panel 10 is in contact with the optical sheet 22, so that the liquid crystal panel 10 can be prevented from entering more than necessary in the depth direction of the backlight 20.
図１９は、実施形態２の第四の変形例に係る液晶表示装置の断面模式図である。
図１９に示すように、液晶パネル１０が光学シート２２に接する場合においても、液晶パネル１０及びバックライトケース２３の間（より詳細には、額縁部１２及び側壁部２５の間）と、液晶パネル１０及びパネル固定部材４０の間とには、弾性を有する緩衝部材３が配されてもよい。 FIG. 19 is a schematic cross-sectional view of a liquid crystal display device according to a fourth modification of the second embodiment.
As shown in FIG. 19, even when the liquid crystal panel 10 is in contact with the optical sheet 22, between the liquid crystal panel 10 and the backlight case 23 (more specifically, between the frame portion 12 and the side wall portion 25) and the liquid crystal panel. Between 10 and the panel fixing member 40, the buffer member 3 which has elasticity may be arranged.
（実施形態３）
本実施形態では、本実施形態に特有の特徴について主に説明し、実施形態１と重複する内容については説明を省略する。また、本実施形態と実施形態１とにおいて、同一又は同様の機能を有する部材には同一の符号を付し、本実施形態において、その部材の説明は省略する。本実施形態は、以下で説明する点を除いて、実施形態１と実質的に同じである。 (Embodiment 3)
In the present embodiment, features unique to the present embodiment will be mainly described, and the description overlapping with the first embodiment will be omitted. Moreover, in this embodiment and Embodiment 1, the same code | symbol is attached | subjected to the member which has the same or the same function, and description of the member is abbreviate | omitted in this embodiment. The present embodiment is substantially the same as the first embodiment except for the points described below.
図２０は、実施形態３に係る液晶表示装置の断面模式図である。
図２０に示すように、本実施形態に係る液晶表示装置３００は、液晶パネル１０を保持するベゼル５０を更に備えている。本実施形態では、バックライトケース２３の側壁部２５の内壁２５ａに液晶パネル１０を嵌め込むのではなく、液晶パネル１０の額縁部１２をベゼル５０で保持し、そして、ベゼル５０をバックライトケース２３に固定している。このようにして、液晶パネル１０がバックライトケース２３に保持及び固定されている。 FIG. 20 is a schematic cross-sectional view of the liquid crystal display device according to the third embodiment.
As shown in FIG. 20, the liquid crystal display device 300 according to the present embodiment further includes a bezel 50 that holds the liquid crystal panel 10. In the present embodiment, the liquid crystal panel 10 is not fitted into the inner wall 25a of the side wall portion 25 of the backlight case 23, but the frame portion 12 of the liquid crystal panel 10 is held by the bezel 50, and the bezel 50 is held by the backlight case 23. It is fixed to. In this way, the liquid crystal panel 10 is held and fixed to the backlight case 23.
ベゼル５０は、画像表示領域１を少なくとも含む領域が開口した枠状の部材であり、画像表示領域１に干渉しないように、液晶パネル１０の額縁部１２に周着されている。ベゼル５０は、通常、液晶パネル１０の額縁部１２全体を取り囲むように配されているが、ベゼル５０の配置場所は、特に限定されず、ベゼル５０を液晶パネル１０の周囲の一部のみに配してもよい。 The bezel 50 is a frame-like member having an opening including at least an area including the image display area 1, and is surrounded by the frame portion 12 of the liquid crystal panel 10 so as not to interfere with the image display area 1. The bezel 50 is usually arranged so as to surround the entire frame portion 12 of the liquid crystal panel 10, but the location of the bezel 50 is not particularly limited, and the bezel 50 is arranged only in a part around the liquid crystal panel 10. May be.
ベゼル５０は、額縁部１２を嵌め込み可能な形状に形成されたパネル保持部５１を含んでいる。そして、パネル保持部５１に額縁部１２が嵌め込まれている。本実施形態において額縁部１２を嵌め込み可能な形状としては、実施形態１で説明した形状と同様のものが挙げられる。すなわち、パネル保持部５１の額縁部１２が嵌め込まれる部分の形状は、額縁部１２の形状とぴったり合っていてもよいし、パネル保持部５１及び額縁部１２の間には部分的に隙間が設けられていてもよい。また、パネル保持部５１の平坦部（平坦な表面）を額縁部１２に当ててもよいし、パネル保持部５１を点状又は線状の部分で額縁部１２に当ててもよい。例えば、パネル保持部５１は、互いに平行に所定の間隔を空けて直線状に形成された２列の凸条部５３ａ及び５３ｂを含んでおり、これらの凸条部５３ａ及び５３ｂの間の隙間に額縁部１２が嵌め込まれている。このとき、凸条部５３ａ及び５３ｂは、それぞれ、額縁部１２の観察者側（前面）及び後方側（背面）に沿って延在している。凸条部５３ａ及び５３ｂの間隔は、額縁部１２の厚みと略同一に設定されている。各凸条部５３ａ及び５３ｂの幅は、各凸条部５３ａ、５３ｂが画像表示領域１に干渉せずに額縁領域２内に配置される限り、特に限定されず、適宜、設定することが可能である。 The bezel 50 includes a panel holding portion 51 formed in a shape that allows the frame portion 12 to be fitted therein. The frame portion 12 is fitted into the panel holding portion 51. In this embodiment, the shape that can fit the frame portion 12 may be the same as the shape described in the first embodiment. That is, the shape of the portion of the panel holding portion 51 into which the frame portion 12 is fitted may exactly match the shape of the frame portion 12, and a gap is partially provided between the panel holding portion 51 and the frame portion 12. It may be done. Moreover, the flat part (flat surface) of the panel holding | maintenance part 51 may be applied to the frame part 12, and the panel holding part 51 may be applied to the frame part 12 by a dotted | punctate or linear part. For example, the panel holding part 51 includes two rows of protruding ridges 53a and 53b formed in a straight line in parallel with each other at a predetermined interval, and in the gap between these protruding ridges 53a and 53b. A frame portion 12 is fitted. At this time, the ridges 53a and 53b extend along the observer side (front surface) and the rear side (back surface) of the frame portion 12, respectively. The interval between the ridges 53 a and 53 b is set to be substantially the same as the thickness of the frame portion 12. The widths of the ridges 53a and 53b are not particularly limited as long as the ridges 53a and 53b are arranged in the frame area 2 without interfering with the image display area 1, and can be set as appropriate. It is.
ベゼル５０は、パネル保持部５１に連結された板状のケース固定部５２を更に含んでいる。ベゼル５０は、ケース固定部５２がバックライトケース２３の側壁部２５の外壁に沿うように、バックライトケース２３に嵌め込まれている。そして、ケース固定部５２がバックライトケース２３に固定されている。ケース固定部５２の固定手段は特に限定されず、例えば、接着部材、ネジ止め、爪嵌合等が挙げられる。パネル保持部５１は、バックライトケース２３の側壁部２５の端部（平板部２４から最も遠い部分）、より詳細には側壁部２５の端面（上面、平板部２４から最も遠い面）に当接している。ベゼル５０は、例えば、一般的な成形方法により樹脂から形成されており、ベゼル５０のパネル保持部５１等の全ての部分は、一体的に形成されている。 The bezel 50 further includes a plate-like case fixing portion 52 connected to the panel holding portion 51. The bezel 50 is fitted into the backlight case 23 so that the case fixing portion 52 is along the outer wall of the side wall portion 25 of the backlight case 23. The case fixing part 52 is fixed to the backlight case 23. The fixing means of the case fixing part 52 is not particularly limited, and examples thereof include an adhesive member, screwing, and claw fitting. The panel holding portion 51 abuts on an end portion (a portion farthest from the flat plate portion 24) of the side wall portion 25 of the backlight case 23, more specifically, an end surface (an upper surface, a surface farthest from the flat plate portion 24) of the side wall portion 25. ing. For example, the bezel 50 is formed from a resin by a general molding method, and all parts such as the panel holding portion 51 of the bezel 50 are integrally formed.
図２１は、実施形態３の第一の変形例に係る液晶表示装置の断面模式図である。
ベゼル５０の固定方法は、図２０に示した方法に特に限定されない。例えば、図２１に示すように、ケース固定部５２が設けられていなくてもよい。この場合、ベゼル５０のパネル保持部５１は、側壁部２５の端部上、より詳細には側壁部２５の端面上に配置されている。そして、粘着テープ等の接着部材４によって液晶パネル１０をバックライトケース２３に固定している。 FIG. 21 is a schematic cross-sectional view of a liquid crystal display device according to a first modification of the third embodiment.
The method for fixing the bezel 50 is not particularly limited to the method shown in FIG. For example, as shown in FIG. 21, the case fixing part 52 may not be provided. In this case, the panel holding portion 51 of the bezel 50 is disposed on the end portion of the side wall portion 25, more specifically, on the end surface of the side wall portion 25. The liquid crystal panel 10 is fixed to the backlight case 23 by an adhesive member 4 such as an adhesive tape.
以上、説明したように、本実施形態の液晶表示装置３００は、液晶パネル１０、バックライト２０、及び、ベゼル５０を備えており、液晶パネル１０は、画像表示部１１と、画像表示部１１の周囲の額縁部１２とを含んでおり、バックライト２０は、液晶パネル１０の後方に位置する光学シート２２と、光学シート２２の後方に位置する導光板２１と、バックライトケース２３とを含んでおり、バックライトケース２３は、観察者側の面が開口した箱体であり、平板部２４と、平板部２４から立ち上がる側壁部２５とを含んでおり、光学シート２２、及び、導光板２１は、バックライトケース２３内に収容されており、ベゼル５０は、額縁部１２を嵌め込み可能な形状に形成されたパネル保持部５１を含んでおり、額縁部１２は、パネル保持部５１に嵌め込まれており、ベゼル５０は、２５側壁部に固定されている。 As described above, the liquid crystal display device 300 of this embodiment includes the liquid crystal panel 10, the backlight 20, and the bezel 50, and the liquid crystal panel 10 includes the image display unit 11 and the image display unit 11. The backlight 20 includes an optical sheet 22 positioned behind the liquid crystal panel 10, a light guide plate 21 positioned behind the optical sheet 22, and a backlight case 23. The backlight case 23 is a box having an opening on the viewer side, and includes a flat plate portion 24 and a side wall portion 25 rising from the flat plate portion 24. The optical sheet 22 and the light guide plate 21 are The bezel 50 is housed in the backlight case 23, and the bezel 50 includes a panel holding portion 51 formed into a shape that allows the frame portion 12 to be fitted therein. Is fitted to 51, the bezel 50 is fixed to 25 the side wall portion.
このように、ベゼル５０は、額縁部１２を嵌め込み可能な形状に形成されたパネル保持部５１を含んでおり、額縁部１２は、パネル保持部５１に嵌め込まれており、ベゼル５０は、２５側壁部に固定されているため、液晶表示装置３００の額縁領域２の幅は、ベゼル５０の板厚と、液晶パネル１０の額縁部１２の幅との合計になる。したがって、劇的な狭額縁化、すなわち、額縁領域（画像非表示領域）２の劇的な減少が可能である。また、液晶パネル１０をバックライトケース２３に強固に固定することが可能である。 As described above, the bezel 50 includes the panel holding portion 51 formed in a shape in which the frame portion 12 can be fitted. The frame portion 12 is fitted into the panel holding portion 51, and the bezel 50 has 25 side walls. Therefore, the width of the frame area 2 of the liquid crystal display device 300 is the sum of the plate thickness of the bezel 50 and the width of the frame portion 12 of the liquid crystal panel 10. Therefore, dramatic narrowing of the frame, that is, dramatic reduction of the frame area (image non-display area) 2 is possible. Further, the liquid crystal panel 10 can be firmly fixed to the backlight case 23.
更に、接着剤等の硬化性接着部材を用いることなく、液晶パネル１０をバックライトケース２３に固定することが可能であるため、硬化性接着部材に起因する上述のような不具合の発生を防止することが可能である。 Furthermore, since it is possible to fix the liquid crystal panel 10 to the backlight case 23 without using a curable adhesive member such as an adhesive, the occurrence of the above-described problems caused by the curable adhesive member is prevented. It is possible.
図２２及び２３は、それぞれ、実施形態３の第二及び第三の変形例に係る液晶表示装置の断面模式図である。
図２２及び２３に示すように、液晶パネル１０及びベゼル５０の間、より詳細には、額縁部１２及びパネル保持部５１の間には、弾性を有する緩衝部材３が配されてもよい。上述の方法で液晶パネル１０をバックライト２０に固定する場合、外部から液晶パネル１０に伝わる応力に起因して液晶パネル１０の表示性能が劣化することがある。しかしながら、液晶パネル１０及びベゼル５０の間に弾性を有する緩衝部材３を配することによって、そのような表示性能の劣化を防止することができる。 22 and 23 are schematic cross-sectional views of liquid crystal display devices according to second and third modifications of Embodiment 3, respectively.
As shown in FIGS. 22 and 23, an elastic buffer member 3 may be disposed between the liquid crystal panel 10 and the bezel 50, more specifically, between the frame portion 12 and the panel holding portion 51. When the liquid crystal panel 10 is fixed to the backlight 20 by the above-described method, the display performance of the liquid crystal panel 10 may be deteriorated due to a stress transmitted to the liquid crystal panel 10 from the outside. However, by disposing the buffer member 3 having elasticity between the liquid crystal panel 10 and the bezel 50, it is possible to prevent such deterioration in display performance.
図２４及び２５は、それぞれ、実施形態３の第四及び第五の変形例に係る液晶表示装置の断面模式図である。
図２４及び２５に示すように、液晶パネル１０は、光学シート２２との間に隙間が発生しないように配置されていてもよく、光学シート２２全体に接していてもよい。 24 and 25 are schematic cross-sectional views of liquid crystal display devices according to fourth and fifth modifications of Embodiment 3, respectively.
As shown in FIGS. 24 and 25, the liquid crystal panel 10 may be disposed so as not to generate a gap with the optical sheet 22, or may be in contact with the entire optical sheet 22.
このように、液晶パネル１０が光学シート２２に接することによって、液晶パネル１０がバックライト２０の奥行き方向に必要以上に入らないようにすることが可能である。 As described above, the liquid crystal panel 10 is in contact with the optical sheet 22, so that the liquid crystal panel 10 can be prevented from entering more than necessary in the depth direction of the backlight 20.
上述した実施形態は、本発明の要旨を逸脱しない範囲において、適宜組み合わされてもよい。また、各実施形態の変形例は、他の実施形態に組み合わされてもよい。 The above-described embodiments may be combined as appropriate without departing from the scope of the present invention. Moreover, the modification of each embodiment may be combined with other embodiment.
１：画像表示領域（アクティブエリア）
２：額縁領域（画像非表示領域）
３：弾性を有する緩衝部材
４：接着部材
１０：液晶パネル
１１：画像表示部
１２：額縁部（画像表示部）
２０：バックライト
２１：導光板
２２：光学シート
２３：バックライトケース
２４：平板部
２５：側壁部
２５ａ：内壁
２６：開口部
２７：パネル保持部
２８、２８ａ、２８ｂ、３２、５３ａ、５３ｂ：凸条部
２９：凹条部
３０：突起部
３１：頂点部
３３：稜線部
４０：パネル固定部材
４１：パネル押え部
４２：ケース固定部
４２ａ、４２ｂ：ケース固定部の第一及び第二部分
５０：ベゼル
５１：パネル保持部
５２：ケース固定部
１００、２００、３００：液晶表示装置

  1: Image display area (active area)
2: Frame area (image non-display area)
3: Elastic buffer member 4: Adhesive member 10: Liquid crystal panel 11: Image display unit 12: Frame portion (image display unit)
20: Backlight 21: Light guide plate 22: Optical sheet 23: Backlight case 24: Flat plate part 25: Side wall part 25a: Inner wall 26: Opening part 27: Panel holding part 28, 28a, 28b, 32, 53a, 53b: Convex Strip 29: Concave strip 30: Protruding portion 31: Vertex portion 33: Ridge portion 40: Panel fixing member 41: Panel pressing portion 42: Case fixing portion 42a, 42b: First and second portions 50 of the case fixing portion: Bezel 51: Panel holding part 52: Case fixing part 100, 200, 300: Liquid crystal display device

Claims (14)

  1. 液晶パネル、及び、バックライトを備える液晶表示装置であって、
    前記液晶パネルは、画像表示部と、前記画像表示部の周囲の額縁部とを含み、
    前記バックライトは、前記液晶パネルの後方に位置する光学シートと、前記光学シートの後方に位置する導光板と、バックライトケースとを含み、
    前記バックライトケースは、観察者側の面が開口した箱体であり、平板部と、前記平板部から立ち上がる側壁部とを含み、
    前記光学シート、及び、前記導光板は、前記バックライトケース内に収容され、
    前記側壁部の内壁には、前記額縁部を嵌め込み可能な形状に形成されたパネル保持部が設けられ、
    前記パネル保持部に前記額縁部が嵌め込まれる液晶表示装置。     A liquid crystal display device comprising a liquid crystal panel and a backlight,
    The liquid crystal panel includes an image display unit and a frame portion around the image display unit,
    The backlight includes an optical sheet located behind the liquid crystal panel, a light guide plate located behind the optical sheet, and a backlight case.
    The backlight case is a box with an open surface on the viewer side, and includes a flat plate portion and a side wall portion rising from the flat plate portion,
    The optical sheet and the light guide plate are accommodated in the backlight case,
    On the inner wall of the side wall part, a panel holding part formed in a shape capable of fitting the frame part is provided,
    A liquid crystal display device in which the frame portion is fitted into the panel holding portion.
  2. 前記液晶パネル、及び、前記バックライトケースの間に、弾性を有する緩衝部材を更に備える請求項１記載の液晶表示装置。 The liquid crystal display device according to claim 1, further comprising an elastic buffer member between the liquid crystal panel and the backlight case.
  3. 前記液晶パネルは、前記光学シートに接する請求項１又は２記載の液晶表示装置。 The liquid crystal display device according to claim 1, wherein the liquid crystal panel is in contact with the optical sheet.
  4. 前記パネル保持部は、前記額縁部の観察者側に沿って設けられた直線状の凸条部を含む請求項１～３のいずれかに記載の液晶表示装置。 The liquid crystal display device according to any one of claims 1 to 3, wherein the panel holding portion includes a linear ridge provided along the viewer side of the frame portion.
  5. 前記凸条部は、第１の凸条部であり、
    前記パネル保持部は、前記額縁部の後方側に沿って設けられた直線状の第２の凸条部を含み、
    前記第１及び第２の凸条部の各々の前記額縁部側の表面には、複数の突起部が設けられ、
    前記額縁部は、前記複数の突起部の各々の頂点部によって支持される請求項４記載の液晶表示装置。     The ridge portion is a first ridge portion,
    The panel holding portion includes a linear second ridge provided along the rear side of the frame portion,
    A plurality of protrusions are provided on the frame side surface of each of the first and second ridges,
    The liquid crystal display device according to claim 4, wherein the frame portion is supported by a vertex portion of each of the plurality of protrusion portions.
  6. 前記パネル保持部は、前記額縁部に沿って設けられた直線状の凹条部を含み、
    前記額縁部は、前記凹条部に嵌め込まれる請求項１～３のいずれかに記載の液晶表示装置。     The panel holding portion includes a linear concave stripe portion provided along the frame portion,
    The liquid crystal display device according to any one of claims 1 to 3, wherein the frame portion is fitted into the recess.
  7. 液晶パネル、バックライト、及び、パネル固定部材を備える液晶表示装置であって、
    前記液晶パネルは、画像表示部と、前記画像表示部の周囲の額縁部とを含み、
    前記バックライトは、前記液晶パネルの後方に位置する光学シートと、前記光学シートの後方に位置する導光板と、バックライトケースとを含み、
    前記バックライトケースは、観察者側の面が開口した箱体であり、平板部と、前記平板部から立ち上がる側壁部とを含み、
    前記光学シート、及び、前記導光板は、前記バックライトケース内に収容され、
    前記パネル固定部材は、前記額縁部を押さえるパネル押え部を含み、かつ、前記バックライトケースに固定され、
    前記額縁部は、前記パネル押え部及び前記側壁部に挟持される液晶表示装置。     A liquid crystal display device comprising a liquid crystal panel, a backlight, and a panel fixing member,
    The liquid crystal panel includes an image display unit and a frame portion around the image display unit,
    The backlight includes an optical sheet located behind the liquid crystal panel, a light guide plate located behind the optical sheet, and a backlight case.
    The backlight case is a box with an open surface on the viewer side, and includes a flat plate portion and a side wall portion rising from the flat plate portion,
    The optical sheet and the light guide plate are accommodated in the backlight case,
    The panel fixing member includes a panel pressing portion that presses the frame portion, and is fixed to the backlight case.
    The frame portion is a liquid crystal display device sandwiched between the panel pressing portion and the side wall portion.
  8. 前記液晶パネル、及び、前記バックライトケースの間、並びに、前記液晶パネル、及び、前記パネル固定部材の間に、弾性を有する緩衝部材を更に備える請求項７記載の液晶表示装置。 The liquid crystal display device according to claim 7, further comprising an elastic buffer member between the liquid crystal panel and the backlight case, and between the liquid crystal panel and the panel fixing member.
  9. 前記液晶パネルは、前記光学シートに接する請求項７又は８記載の液晶表示装置。 The liquid crystal display device according to claim 7, wherein the liquid crystal panel is in contact with the optical sheet.
  10. 液晶パネル、バックライト、及び、ベゼルを備える液晶表示装置であって、
    前記液晶パネルは、画像表示部と、前記画像表示部の周囲の額縁部とを含み、
    前記バックライトは、前記液晶パネルの後方に位置する光学シートと、前記光学シートの後方に位置する導光板と、バックライトケースとを含み、
    前記バックライトケースは、観察者側の面が開口した箱体であり、平板部と、前記平板部から立ち上がる側壁部とを含み、
    前記光学シート、及び、前記導光板は、前記バックライトケース内に収容され、
    前記ベゼルは、前記額縁部を嵌め込み可能な形状に形成されたパネル保持部を含み、
    前記額縁部は、前記パネル保持部に嵌め込まれ、
    前記ベゼルは、前記側壁部に固定される液晶表示装置。     A liquid crystal display device comprising a liquid crystal panel, a backlight, and a bezel,
    The liquid crystal panel includes an image display unit and a frame portion around the image display unit,
    The backlight includes an optical sheet located behind the liquid crystal panel, a light guide plate located behind the optical sheet, and a backlight case.
    The backlight case is a box with an open surface on the viewer side, and includes a flat plate portion and a side wall portion rising from the flat plate portion,
    The optical sheet and the light guide plate are accommodated in the backlight case,
    The bezel includes a panel holding portion formed in a shape capable of fitting the frame portion,
    The frame portion is fitted into the panel holding portion,
    The bezel is a liquid crystal display device fixed to the side wall.
  11. 前記ベゼルは、前記パネル保持部に連結されたケース固定部を更に含み、
    前記ケース固定部は、前記側壁部に沿って配され、前記側壁部に固定される請求項１０記載の液晶表示装置。     The bezel further includes a case fixing part connected to the panel holding part,
    The liquid crystal display device according to claim 10, wherein the case fixing portion is disposed along the side wall portion and fixed to the side wall portion.
  12. 前記液晶表示装置は、接着部材を更に備え、
    前記ベゼルは、前記側壁部上に配置され、前記接着部材によって前記側壁部に固定される請求項１０記載の液晶表示装置。     The liquid crystal display device further includes an adhesive member,
    The liquid crystal display device according to claim 10, wherein the bezel is disposed on the side wall portion and is fixed to the side wall portion by the adhesive member.
  13. 前記液晶パネル、及び、前記ベゼルの間に、弾性を有する緩衝部材を更に備える請求項１０～１２のいずれかに記載の液晶表示装置。 The liquid crystal display device according to any one of claims 10 to 12, further comprising a buffer member having elasticity between the liquid crystal panel and the bezel.
  14. 前記液晶パネルは、前記光学シートに接する請求項１０～１３のいずれかに記載の液晶表示装置。

          The liquid crystal display device according to claim 10, wherein the liquid crystal panel is in contact with the optical sheet.

PCT/JP2016/074320 2015-08-28 2016-08-22 Lcd device WO2017038519A1 (en)

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Citations (6)

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JPH0541939U (en) * 1991-11-13 1993-06-08 ジエコー株式会社 Flat display device
JPH10123514A (en) * 1996-10-21 1998-05-15 Hitachi Ltd Liquid crystal display device
JP2006235092A (en) * 2005-02-23 2006-09-07 Seiko Instruments Inc Display apparatus
JP2009020430A (en) * 2007-07-13 2009-01-29 Nippon Seiki Co Ltd Display device
WO2011148656A1 (en) * 2010-05-28 2011-12-01 シャープ株式会社 Display device
WO2013094507A1 (en) * 2011-12-20 2013-06-27 シャープ株式会社 Display device and television receiving device

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0541939U (en) * 1991-11-13 1993-06-08 ジエコー株式会社 Flat display device
JPH10123514A (en) * 1996-10-21 1998-05-15 Hitachi Ltd Liquid crystal display device
JP2006235092A (en) * 2005-02-23 2006-09-07 Seiko Instruments Inc Display apparatus
JP2009020430A (en) * 2007-07-13 2009-01-29 Nippon Seiki Co Ltd Display device
WO2011148656A1 (en) * 2010-05-28 2011-12-01 シャープ株式会社 Display device
WO2013094507A1 (en) * 2011-12-20 2013-06-27 シャープ株式会社 Display device and television receiving device

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