CN111399269B - Liquid crystal display device - Google Patents
Liquid crystal display device Download PDFInfo
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- CN111399269B CN111399269B CN201910100426.7A CN201910100426A CN111399269B CN 111399269 B CN111399269 B CN 111399269B CN 201910100426 A CN201910100426 A CN 201910100426A CN 111399269 B CN111399269 B CN 111399269B
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- middle frame
- liquid crystal
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- bearing
- display device
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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
- G02F1/133308—Support structures for LCD panels, e.g. frames or bezels
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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
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/1336—Illuminating devices
- G02F1/133602—Direct backlight
- G02F1/133608—Direct backlight including particular frames or supporting means
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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
- G02F1/133308—Support structures for LCD panels, e.g. frames or bezels
- G02F1/133314—Back frames
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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
- G02F1/133308—Support structures for LCD panels, e.g. frames or bezels
- G02F1/133317—Intermediate frames, e.g. between backlight housing and front frame
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- Physics & Mathematics (AREA)
- Nonlinear Science (AREA)
- Mathematical Physics (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Liquid Crystal (AREA)
Abstract
The invention discloses a liquid crystal display device, relates to the technical field of display, and provides a frame-free direct type liquid crystal display device. The liquid crystal display device provided by the embodiment of the invention comprises: the backboard comprises a bottom and a side wall extending towards the direction perpendicular to the plane of the bottom; the middle frame comprises a first bearing part, a second bearing part and a middle frame connecting part, wherein the first bearing part and the second bearing part are arranged oppositely, the middle frame connecting part is connected with the first bearing part and the second bearing part, the plane of the first bearing part is parallel to the plane of the bottom, the middle frame connecting part is positioned on one side of the side wall close to the bottom, the first bearing part is used for bearing the liquid crystal panel, and the first bearing part, the second bearing part and the middle frame connecting part form a groove-shaped structure; a diffuser plate located within the trough-like structure.
Description
Technical Field
The invention relates to the technical field of display, in particular to a liquid crystal display device.
Background
The lcd tv generally includes a backlight module and a liquid crystal panel, and the backlight module can be divided into a direct-type backlight module and a side-type backlight module according to the light incident mode of the backlight module. The direct type backlight module has natural advantages in realizing image quality effect, and the liquid crystal display with the direct type backlight module occupies an important position in the market. At present, ultra-thin, ultra-narrow, no frame and the like are development trends of liquid crystal televisions.
Disclosure of Invention
The invention provides a direct type liquid crystal display device without a frame.
The liquid crystal display device provided by the embodiment of the invention comprises: the backboard comprises a bottom and a side wall extending towards the direction perpendicular to the plane of the bottom; the middle frame comprises a first bearing part, a second bearing part and a middle frame connecting part, wherein the first bearing part and the second bearing part are arranged oppositely, the middle frame connecting part is connected with the first bearing part and the second bearing part, the plane of the first bearing part is parallel to the plane of the bottom, the middle frame connecting part is positioned on one side of the side wall close to the bottom, the first bearing part is used for bearing the liquid crystal panel, and the first bearing part, the second bearing part and the middle frame connecting part form a groove-shaped structure; a diffuser plate located within the trough-like structure.
According to the above, in the liquid crystal display device, the middle frame is arranged on one side of the side wall of the back plate close to the bottom, the liquid crystal panel is arranged in the first bearing part of the middle frame, and the diffusion plate is arranged in the groove-shaped structure formed by the first bearing part, the second bearing part and the middle frame connecting part which are oppositely arranged, so that the internal components in the liquid crystal display device can be ensured not to be exposed without arranging a frame on the side, the diffusion plate, the liquid crystal panel and the like are fixed, the frameless design of the liquid crystal display device is realized, and the appearance requirement of a user on the display device is met.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is an exploded schematic view of an lcd device according to an embodiment of the present invention;
FIG. 2 is a schematic structural view of the back plate shown in FIG. 1;
FIG. 3 is a schematic cross-sectional view of the back plate of FIG. 2 at E-E';
FIG. 4 is a schematic perspective view of the third middle frame shown in FIG. 1;
FIG. 5 is an enlarged view of the circled portion of FIG. 4;
FIG. 6 is a simplified top view of an LCD device according to an embodiment of the present invention;
FIG. 7 isbase:Sub>A schematic cross-sectional view taken along line A-A' of the LCD device shown in FIG. 6;
FIG. 8 isbase:Sub>A schematic cross-sectional perspective view of the LCD device of FIG. 6 at A-A';
FIG. 9 is a schematic cross-sectional view of the LCD device of FIG. 6 at B-B';
FIG. 10 is a schematic cross-sectional view of the LCD device of FIG. 6 at C-C';
FIG. 11 is a schematic cross-sectional view of the LCD device of FIG. 6 at D-D';
FIG. 12 is a schematic cross-sectional perspective view of the LCD device of FIG. 6 at D-D'.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, it is to be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning contact-connected, detachable-connected, or integrally-connected; the specific meanings of the above terms in the present invention can be understood in a specific case to those of ordinary skill in the art.
Fig. 1 is an exploded perspective view of a liquid crystal display device according to an embodiment of the present invention.
Referring to fig. 1, the liquid crystal display device 1000 includes a backlight assembly 100 and a liquid crystal panel 200.
The liquid crystal display device 1000 has a rectangular shape having a short side and a long side when viewed in a plan view, and a direction of the short side is referred to as a first direction D1 and a direction of the long side is referred to as a second direction D2. The second direction D2 is substantially perpendicular to the first direction D1. The backlight assembly 100 and the liquid crystal panel 200 are sequentially stacked along a third vertical direction D3 substantially orthogonal to a plane of the first direction D1 and the second direction D2.
Along the light-emitting direction of the light in the lcd device 1000, the backlight module 100 includes a supporting backplate 110, a light source 120, a reflector 130, a diffuser plate 140, an optical film 150, a middle frame assembly 160, and a diffuser plate support S.
A back plate 110, fig. 2 is a schematic perspective structure of the back plate 110 shown in fig. 1, and fig. 3 is a schematic cross-sectional view of the back plate of fig. 2 at E-E'.
Referring to fig. 2 and 3, the back plate 110 includes a bottom 111 and first, second, and third sidewalls 112, 113, and 114 extending in a third direction D3 of the liquid crystal display device 1000, the first and second sidewalls 112 and 113 are substantially parallel to the first direction D1, the third sidewall 114 is substantially parallel to the second direction D2, and the bottom 111 is parallel to a direction in which the liquid crystal panel 200 is located.
Taking the third sidewall 114 as an example, the third sidewall 114 includes a first sub-sidewall 1141 and a second sub-sidewall 1142 extending in opposite directions along the third direction D3 of the liquid crystal display device 1000, the second sub-sidewall 1142 is located inside the back plate 110, the first sub-sidewall 1141 and the second sub-sidewall 1142 are connected by a sidewall connection portion 1143, the first sub-sidewall 1141, the second sub-sidewall 1142 and the sidewall connection portion 1143 are integrally connected, and the second sub-sidewall 1142 is formed by integrally bending, so that the strength of the back plate 110 is enhanced by the processing process of the bending process.
Meanwhile, in order to ensure a certain light mixing distance and an appearance effect, the back plate 110 further includes a back plate connection part 115 between the bottom 111 and the sidewalls, and the back plate connection part 115 includes a slope part 1151 connected to an edge of the bottom 111, a terrace part 1152 connected to one end of the first sidewall 112 or the second sidewall 113 or the third sidewall 114, and a transition part 1153 connecting the slope part 1151 and the terrace part 1152. The slope portion 1151 is inclined at an angle θ in a range of about 20 to about 50 degrees with respect to the bottom portion 111, and the curve-optimized design makes the display device more slim in appearance, achieving a good appearance effect. The plane where the platform part 1152 is located is approximately perpendicular to the third direction D3 and is parallel to the plane where the liquid crystal panel 200 is located, the plane where the transition part 1153 is located is approximately parallel to the third direction D3, and the three-section design of the inclined plane part, the transition part and the platform part reduces the difficulty of the processing technology of the backplane in the actual production process.
Note that the first sidewall 112 side, the second sidewall 113 side, and the fourth sidewall 114 side of the back plate 110 have substantially the same structure.
The bottom 111, the first sidewall 112, the second sidewall 113, the third sidewall 114 and the connection 115 of the back plate 110 are integrally formed, i.e. the back plate 110 is integrally formed. In the aspect of processing technology, the back plate can be processed in an integrated bending mode, so that the strength of the back plate 110 can be enhanced, and a good appearance effect is achieved.
In addition, since the back plate 110 includes three sidewalls integrally formed, the fourth side except the three sidewalls is not provided with the above sidewall structure for the assembly, which facilitates the assembly of the diffuser plate and the diaphragm.
The light source 120 generates light, and includes a plurality of LED light bars 121 arranged along the second direction D2, and the plurality of LED light bars 121 are arranged substantially in parallel. The light bar 121 comprises a circuit board 1211 and a plurality of LED lamps 1212 positioned on one side of the circuit board 121, the other side of the circuit board 1211 contacts the back plate 110, and the light bar 121 is fixed on the back plate 110 through a connecting component.
The reflective sheet 130 is used for reflecting light rays to the light emitting direction. The reflective sheet 130 is fixed on the surface of the back plate 110, and a plurality of through holes for exposing the LED 1212 are formed in the reflective sheet 130.
The diffusion plate 140 refracts and reflects the light from the light source 120, thereby realizing the homogenization of the light.
The optical film 150, which typically includes one or more films, is primarily used for light gathering and brightness enhancement.
And a diffuser plate holder S on the back plate 110 for supporting the diffuser plate 140, thereby ensuring a light mixing distance of the liquid crystal display device 1000.
And a middle frame assembly 160 positioned at the edges of the reflection sheet 130, the diffusion plate 140, and the optical film 150. The middle frame assembly 160 includes a first middle frame 161 and a second middle frame 162 substantially parallel to the first direction D1, a third middle frame 163 and a fourth middle frame 164 substantially parallel to the second direction D2, and the fourth middle frame 164 is coupled to the front housing 170.
The middle frames of the middle frame assembly 160 are assembled by splicing, and optionally, the first, second and third middle frames may also be integrally formed. A middle frame adhesive tape 180 is disposed between the first middle frame 161, the second middle frame 162, the third middle frame 163 and the back plate 110, so that the middle frame assembly 160 is fixed on the back plate 110 by the middle frame adhesive tape 180. A panel tape 190 is disposed between the middle frame assembly 170 and the liquid crystal panel 200, and the liquid crystal panel 200 is fixed to the frame assembly 160 by the panel tape 190.
Although not shown in fig. 1, the display device 1000 may further include a rear case (not shown) coupled to a side of the rear plate 110 away from the liquid crystal panel 200.
Fig. 4 is a schematic perspective view of the third middle frame 163 shown in fig. 1, and fig. 5 is an enlarged view of a circled portion in fig. 4.
Referring to fig. 4 and 5, the third middle frame 163 integrally forms a groove-shaped structure, the third middle frame 163 includes a first bearing portion 1631 and a second bearing portion 1632 which are perpendicular to the third direction D3 and are oppositely arranged, and a middle frame connecting portion 1633 connected between the first bearing portion 1631 and the second bearing portion 1632, and the first bearing portion 1631, the second bearing portion 1632 and the middle frame connecting portion 1633 enclose a groove-shaped structure.
The first receiving portion 1631 includes a panel receiving portion 16311 and a film receiving portion 16312, the panel receiving portion 16311 and the film receiving portion 16312 have a certain height difference according to a stacked relationship of the liquid crystal display device 1000, and form a stepped shape, and the film receiving portion 16312 is close to an end of the first receiving portion 1631. The membrane bearing part 16312 is further provided with a protrusion 16313, and the membrane hanging lug is hung on the protrusion 16313 to fix the membrane.
The third bezel 163 further includes a reflective sheet bearing part 1634 extending along one end of the second bearing part 1632 at an angle α with respect to the second bearing part 1632, the angle α being set in a range of about 20 degrees to 50 degrees. The reflective sheet bearing part 1634 is used for bearing the reflective sheet 130, and the reflective sheet 130 can be fixed on the reflective sheet bearing part 1634 by bonding or the like, so as to support and fix the reflective sheet 130.
In addition, the third middle frame further includes a support part 1635 extending along one end of the reflective sheet bearing part 1634. The supporting portion 1635 extends away from the first bearing portion 1631, the plane of the supporting portion 1635 is substantially parallel to the third direction, and the supporting portion 1635 contacts the back plate to support the middle frame from being turned inside.
It should be noted that, the first middle frame 161 and the second middle frame 162 have substantially the same structure as the third middle frame 163, and different from the third middle frame 163, the diaphragm bearing portion 16312 is not included on the first middle frame 161 and the second middle frame 162, and the specific structure can refer to the description in fig. 9 to 10.
The relative positional relationship of the components after assembly in the liquid crystal display device 1000 will be described below.
Fig. 6 isbase:Sub>A simplified top view of the liquid crystal display device 1000, and fig. 7 and 8 are schematic cross-sectional views of the liquid crystal display device 1000 atbase:Sub>A-base:Sub>A', where the position of the liquid crystal display device 1000 corresponds to the position of the film tab.
As can be seen from fig. 7 and 8, the liquid crystal display device 1000 includes a back plate 110, a reflective sheet 130, a diffusion plate 140, an optical film 150, a third middle frame 163, and a liquid crystal panel 200.
The third middle frame 163 is located on one side of the sidewall 114 of the back plate 110 close to the bottom 111, the third middle frame 163 includes a first bearing part 1631 and a second bearing part 1632 which are oppositely arranged, and a middle frame connecting part 1633 connected between the first bearing part 1631 and the second bearing part 1632, the first bearing part 1631, the second bearing part 1632 and the middle frame connecting part 1633 enclose a groove-shaped structure, the diffusion plate 140 is located in the groove-shaped structure, and the first bearing part 1631 bears the liquid crystal panel 200. The middle frame is arranged on one side, close to the bottom, of the side wall of the back plate, the liquid crystal panel is arranged on the first bearing portion of the middle frame, the diffusion plate is arranged in a groove-shaped structure formed by the first bearing portion, the second bearing portion and the middle frame connecting portion which are arranged oppositely, therefore, internal components in the liquid crystal display device can be guaranteed not to be exposed without arranging a frame on the side, the diffusion plate, the liquid crystal panel and the like are fixed, and the frameless design of the liquid crystal display device is achieved.
The third side wall 114 includes a first sub-side wall 1141, a side wall connecting portion 1143 and a second sub-side wall 1142 which are integrally connected, the three are formed by an integral bending manner, the third middle frame 163 is located at a side of the second sub-side wall 1142 far away from the first sub-side wall, after the assembly, compared with the case that the third side wall includes only the first sub-side wall 1141, the side wall connecting portion 1143 is exposed outside, but not an end portion of the first sub-side wall, the side wall connecting portion 1143 is a smooth transition curved surface, and has a good appearance shape, and both can be directly used as appearance surfaces by directly spraying on the first sub-side wall 1141 and the side wall connecting portion 1143.
The third middle frame 163 is located between the rear panel 110 and the liquid crystal panel 200, and a middle frame adhesive tape 180 is disposed between the platform portion 1152 of the rear panel 110 and the second bearing portion 1632 of the third middle frame, for fixing the third middle frame 163 to the rear panel 110.
The reflective sheet 130 is disposed on the reflective sheet bearing portion 1634 of the third middle frame 163, the edge of the reflective sheet 130 is disposed on the second bearing portion 1632, and since the reflective sheet bearing portion 1634 forms an angle α with respect to the second bearing portion 1632, accordingly, the reflective sheet 130 also forms an angle α with respect to the second bearing portion 1632, that is, the reflective sheet 130 forms an angle α with respect to the bottom portion 111, the angle α ranges from 20 to 50 degrees, preferably 30 degrees, and compared with the reflective sheet 130 directly attached to the back plate 110, more light from the light source is reflected back to the display area of the display device, which is beneficial to improving the display brightness of the display device.
The third middle frame 163 further includes a support portion 1635 connected to one end of the reflective sheet support portion 1634, and the support portion 163 contacts with the inclined surface portion 1151 of the back plate 110 to support and prevent the middle frame from being turned inside.
The diffusion plate 140 is located on a side of the second bearing portion 1632 close to the liquid crystal panel 200, that is, the diffusion plate 140 is inserted into the groove-shaped structure formed by the first bearing portion 1631, the second bearing portion 1632 and the middle frame connecting portion 1633.
The first bearing part 1631 of the third middle frame 163 is located between the diffusion plate 140 and the liquid crystal panel 200. The optical film 150 is placed on the film bearing portion 16322, the film hanging lug on the optical film 150 is hung on the protrusion 16323, and the film fixing adhesive tape 151 is further disposed on the film hanging lug and the protrusion 16323 for fixing the optical film 150 on the film bearing portion 16322. A panel tape 190 is provided between the liquid crystal panel 200 and the panel carrier 16311, thereby achieving fixing of the liquid crystal panel 200 to the third middle frame 163.
Fig. 9 is a schematic cross-sectional view of the liquid crystal display device 1000 at B-B', which corresponds to the position of the film-free hangers.
Unlike the membrane hanging lug in fig. 7, the membrane bearing part 16322 is not provided with the protrusion 16323, and the rest of the structure is the same as the structure shown in fig. 6, and is not described again.
Fig. 10 is a schematic cross-sectional view of the liquid crystal display device 1000 at C-C'. Unlike the structures shown in fig. 7 and 9, the first bearing part 1631 of the middle frame does not include the film bearing part 16322, only includes the panel bearing part 16311, there is no matching structure between the optical film 150 and the middle frame, and the middle frame only plays a role in limiting the position of the film.
Fig. 11 and 12 are schematic cross-sectional views of the liquid crystal display device 1000 at D-D'.
As can be seen from fig. 11 and 12, on this side, the liquid crystal display device 1000 includes a back plate 110, a reflection sheet 130, a diffusion plate 140, an optical film 150, a fourth middle frame 164, a liquid crystal panel 200, and a front case 170. The fourth middle frame 164 is located at the edges of the reflection sheet 130, the diffusion plate 140, and the optical film 150.
The backplate 110 includes a backplate carrying portion 116 for carrying the reflective sheet 130, the diffusion plate 140, and the optical diaphragm 150, and the reflective sheet 130, the diffusion plate 140, and the optical diaphragm 150 are sequentially stacked. The back board bearing part 116 further comprises a jack 117
The back plate 110 further includes a lower sidewall 118 extending along one end of the back plate carrier 116 toward the third direction D3 away from the liquid crystal panel 200.
The fourth middle frame 164 includes a middle frame pressing part 1641 extending in parallel to the direction of the liquid crystal panel 200. One side of the middle frame pressing portion 1641 contacts one side of the optical film 150 away from the back plate, and a panel tape 190 is disposed on a side opposite to the side, and the panel tape 190 is used for bonding the liquid crystal panel 200.
The fourth middle frame 164 further includes an inserting arm 1643 and a front casing supporting wall 1642 perpendicular to the middle frame pressing portion 1641, the inserting arm 1643 is near an end portion of the middle frame pressing portion 1641, an inserting groove is formed between the inserting arm 1643 and the front casing supporting wall 1642, the inserting arm 1643 is inserted into the inserting hole 117 of the back plate 110, and the lower sidewall 118 is located in the inserting groove formed by the inserting arm 1643 and the front casing supporting wall 1642.
The front case 170 is pressed on the edge of the liquid crystal panel 200, and surrounds one end of the front case supporting wall 1642 away from the rear panel 110 and one side of the middle frame pressing portion 1641 to prevent light leakage and beautify appearance.
The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily think of the changes or substitutions within the technical scope of the present invention, and shall cover the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (6)
1. A liquid crystal display device, comprising:
the back plate comprises a bottom and a side wall extending towards the direction perpendicular to the plane of the bottom;
the middle frame comprises a first bearing part, a second bearing part and a middle frame connecting part, wherein the first bearing part and the second bearing part are arranged oppositely, the middle frame connecting part is connected with the first bearing part and the second bearing part, the plane of the first bearing part is parallel to the plane of the bottom, the middle frame connecting part is positioned on one side of the side wall close to the bottom, the first bearing part is used for bearing a liquid crystal panel, and the first bearing part, the second bearing part and the middle frame connecting part form a groove-shaped structure;
a diffuser plate located within the trough-like structure,
the backboard comprises a middle frame, a backboard connecting part and a backboard connecting part, wherein the backboard also comprises a backboard connecting part connected between the bottom and the side wall, the backboard connecting part comprises a platform part connected with the side wall and parallel to the direction of the bottom, and the platform part is used for bearing the second bearing part of the middle frame;
the back plate connecting part of the back plate further comprises a bevel part connected to the bottom part and forming an angle theta relative to the bottom part and a transition part connecting the bevel part and the platform part;
the middle frame further comprises a reflector plate bearing part which is connected to the second bearing part and forms an angle alpha relative to the bearing part, and the reflector plate bearing part is used for bearing a reflector plate;
the middle frame further comprises a supporting part connected to the reflector plate bearing part.
2. The liquid crystal display device according to claim 1, wherein θ is in a range of 20 to 50 degrees.
3. The liquid crystal display device according to claim 1, wherein the side wall of the back plate includes a first sub-side wall and a second sub-side wall extending in opposite directions in a direction perpendicular to a plane of the bottom portion, and a side wall connecting portion connecting the first sub-side wall and the second sub-side wall.
4. The liquid crystal display device according to claim 3, wherein the first sub-sidewall, the second sub-sidewall, and the sidewall connecting portion are integrally formed.
5. The liquid crystal display device according to claim 1, wherein α has a value in a range of 20 to 50 degrees.
6. The liquid crystal display device according to claim 1, wherein the first carrying portion includes a panel carrying portion for carrying the liquid crystal panel and a film carrying portion for carrying an optical film.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/CN2019/129387 WO2020140847A1 (en) | 2019-01-02 | 2019-12-27 | Liquid crystal display device |
| US16/792,490 US11067852B2 (en) | 2019-01-02 | 2020-02-17 | Liquid crystal display device |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2019100015283 | 2019-01-02 | ||
| CN201910001528 | 2019-01-02 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111399269A CN111399269A (en) | 2020-07-10 |
| CN111399269B true CN111399269B (en) | 2022-10-04 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910100426.7A Active CN111399269B (en) | 2019-01-02 | 2019-01-31 | Liquid crystal display device |
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| CN (1) | CN111399269B (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113946068B (en) * | 2020-07-16 | 2024-03-08 | 中强光电股份有限公司 | Backboard, light source module and display device |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2083313A1 (en) * | 2008-01-24 | 2009-07-29 | Funai Electric Co., Ltd. | Liquid crystal module |
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| KR101448905B1 (en) * | 2007-12-28 | 2014-10-13 | 삼성디스플레이 주식회사 | Backligth assembly and display device having the same |
| JP5452356B2 (en) * | 2010-05-19 | 2014-03-26 | パナソニック株式会社 | Backlight device and liquid crystal module |
| CN102759822B (en) * | 2012-07-17 | 2015-05-27 | 深圳市华星光电技术有限公司 | Liquid crystal device as well as backlight module and framework unit thereof |
| US10371887B2 (en) * | 2014-09-26 | 2019-08-06 | Sakai Display Products Corporation | Display apparatus with U-shaped coupling member |
| CN104534351A (en) * | 2014-12-11 | 2015-04-22 | 青岛海信电器股份有限公司 | Backlight module and display device |
| CN108319056A (en) * | 2018-02-28 | 2018-07-24 | 四川长虹电器股份有限公司 | Zero frame suspension liquid crystal display and its assembly method |
| CN208076883U (en) * | 2018-04-25 | 2018-11-09 | 冠捷显示科技（厦门）有限公司 | A kind of downward back photo structure |
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