CN111708221A - Backlight module and display device - Google Patents
Backlight module and display device Download PDFInfo
- Publication number
- CN111708221A CN111708221A CN202010578276.3A CN202010578276A CN111708221A CN 111708221 A CN111708221 A CN 111708221A CN 202010578276 A CN202010578276 A CN 202010578276A CN 111708221 A CN111708221 A CN 111708221A
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- CN
- China
- Prior art keywords
- light guide
- backlight module
- fixing
- guide plate
- fixing part
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- 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
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
- G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
- G02B6/0033—Means for improving the coupling-out of light from the light guide
- G02B6/005—Means for improving the coupling-out of light from the light guide provided by one optical element, or plurality thereof, placed on the light output side of the light guide
- G02B6/0055—Reflecting element, sheet or layer
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
- G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
- G02B6/0081—Mechanical or electrical aspects of the light guide and light source in the lighting device peculiar to the adaptation to planar light guides, e.g. concerning packaging
- G02B6/0086—Positioning aspects
- G02B6/0088—Positioning aspects of the light guide or other optical sheets in the package
-
- 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
- G02F1/133605—Direct backlight including specially adapted reflectors
-
- 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
- G02F1/133606—Direct backlight including a specially adapted diffusing, scattering or light controlling members
Landscapes
- Physics & Mathematics (AREA)
- Nonlinear Science (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Mathematical Physics (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Planar Illumination Modules (AREA)
Abstract
The invention provides a backlight module and a display device, wherein the backlight module comprises: the back plate comprises a side wall, and a first fixing part is arranged on the back plate; the light guide plate is positioned in the back plate; the light guide plate and the back plate are arranged at intervals; wherein a fixing piece is arranged between the back plate and the light guide plate; the fixing piece is provided with a second fixing part, and the first fixing part and the second fixing part are matched with each other to limit the position of the light guide plate. The backlight module and the display device can avoid the position of the light guide plate from deviating and improve the display effect.
Description
[ technical field ] A method for producing a semiconductor device
The present invention relates to the field of display technologies, and in particular, to a backlight module and a display device.
[ background of the invention ]
The conventional backlight module includes a reflective sheet and a back plate, and a fixing member is disposed between the reflective sheet and the back plate to limit the position of the light guide plate.
However, when the display module vibrates, the fixing member is easy to fall off, so that the position of the light guide plate deviates, and therefore, light spots, bright bands and other defects are generated, and the display effect is reduced.
[ summary of the invention ]
The invention aims to provide a backlight module and a display device, which can avoid the position of a light guide plate from deviating and further improve the display effect.
To solve the above technical problem, the present invention provides a backlight module, which includes:
the back plate comprises a side wall, and a first fixing part is arranged on the back plate;
the light guide plate is positioned in the back plate; the light guide plate and the back plate are arranged at intervals;
wherein a fixing piece is arranged between the back plate and the light guide plate; the fixing piece is provided with a second fixing part, and the first fixing part and the second fixing part are matched with each other to limit the position of the light guide plate.
The invention also provides a display device which comprises the backlight module.
The backlight module and the display device comprise a back plate, wherein the back plate comprises a side wall, and a first fixing part is arranged on the back plate; the light guide plate is positioned in the back plate; the light guide plate and the back plate are arranged at intervals; wherein a fixing piece is arranged between the back plate and the light guide plate; the fixing piece is provided with a second fixing part, and the first fixing part and the second fixing part are matched with each other to limit the position of the light guide plate; the first fixing part and the second fixing part are matched with each other to limit the position of the light guide plate, so that the position of the light guide plate is prevented from being deviated, and the display effect is improved.
[ description of the drawings ]
FIG. 1 is a schematic partial cross-sectional view of a conventional display device;
FIG. 2 is a top view of a mount in the display device shown in FIG. 1;
FIG. 3 is a side view of a mount in the display device shown in FIG. 1;
FIG. 4 is a partial top view of a backplane in the display device shown in FIG. 1;
FIG. 5 is a schematic partial cross-sectional view illustrating a backlight module according to an embodiment of the invention;
FIG. 6 is a partial top view of the backplane in the display device shown in FIG. 5;
FIG. 7 is a top view of the mount in the display device shown in FIG. 5;
FIG. 8 is a side view of a mount in the display device shown in FIG. 5;
fig. 9 is a partial cross-sectional view of a display device according to an embodiment of the invention.
[ detailed description ] embodiments
The following description of the embodiments refers to the accompanying drawings for illustrating the specific embodiments in which the invention may be practiced. In the present invention, directional terms such as "up", "down", "front", "back", "left", "right", "inner", "outer", "side", etc. refer to directions of the attached drawings. Accordingly, the directional terms used are used for explanation and understanding of the present invention, and are not used for limiting the present invention. In the drawings, elements having similar structures are denoted by the same reference numerals.
As shown in fig. 1 to 4, a conventional backlight module 10 includes a back plate 11, a reflective sheet 12, a light guide plate 13 and an optical module 14. Wherein a fixing member 15 is disposed between the light guide plate 13 and the back plate 11, and the fixing member 15 surrounds a periphery of the light guide plate 13.
The conventional display device further includes a display panel 20, a cover plate 21 and a housing 22, wherein the display panel 20 is disposed above the backlight module 10, and the cover plate 21 is disposed above the display panel 20. The backlight module 10 and the display panel 20 are both located within a housing 22.
Referring to fig. 5 to 8, fig. 5 is a partial cross-sectional view of a backlight module according to an embodiment of the invention.
As shown in fig. 5, the backlight module of the present embodiment includes a back plate 31 and a fixing member 32, and further includes a reflective sheet 33, a light guide plate 34 and an optical module 35, wherein the reflective sheet 33, the light guide plate 34 and the optical module 35 are all located in the back plate 31. The reflecting sheet 33 is positioned on the light incident side of the light guide plate 34; the optical module 35 is located on the light-emitting side of the light guide plate 34.
Referring to fig. 6, the back plate 31 includes a side wall 312, and in an embodiment, the back plate 31 may further include a bottom plate 311, and the back plate 31 is provided with a first fixing portion 41.
The light guide plate 34 is positioned in the back plate 31; the light guide plate 34 is spaced apart from the back plate 31.
The fixing member 32 is disposed between the back plate 31 and the light guide plate 34; the fixing member 32 is provided with a second fixing portion 42, and the first fixing portion 41 and the second fixing portion 42 cooperate with each other to define the position of the light guide plate 34. In one embodiment, to simplify the manufacturing process, the fixing member 32 surrounds the periphery of the light guide plate 34, the second fixing portion 42 is disposed at a bent portion of the fixing member 32, for example, the fixing member 32 is quadrilateral in shape in a top view, and the fixing members 43 are disposed at four inner corners of the quadrilateral. That is, the second fixing portions 42 are provided at four corners of the fixing member.
In one embodiment, referring to fig. 7 and 8, in order to better prevent the position of the light guide plate from being shifted, one end of the fixing member 32 is connected to one end of the second fixing portion 42, and the fixing member 32 is perpendicular to the second fixing portion 42. For example, in a top view, the second fixing portion 42 extends inward from the inner edge of the fixing member 32, in other words, the outer surface of the second fixing portion 42 abuts against the inner surface of the fixing member 32, the second fixing portion 42 and the fixing member 32 are approximately in a two-ring structure, the second fixing portion 42 is approximately in an inner ring, the fixing member 32 is approximately in an outer ring, the inner diameter of the outer ring is equal to the outer diameter of the inner ring, and the second fixing portion 42 is disposed below the fixing member 32 in a front view.
In one embodiment, in order to improve the stability of the first fixing portion 41 and the second fixing portion 42 in mutual matching, the second fixing portion 42 is located between the light incident side of the light guide plate 34 and the bottom plate 311.
In one embodiment, the second fixing portion 42 is spaced apart from the reflective sheet 33 to prevent damage to the reflective sheet. That is, the length of the reflective sheet 33 is smaller than that of the light guide plate 34.
In one embodiment, in order to reduce the loss of the light source, the material of the second fixing portion 42 is a transparent flexible material. The fixing member 32 is made of a flexible material, and in one embodiment, in order to improve the utilization rate of the light source, a reflective layer is disposed on a surface of the second fixing portion 42 close to the light guide plate 34.
In one embodiment, in order to further improve the stability of the first fixing portion 41 and the second fixing portion 42 in mutual matching, the first fixing portion 41 is disposed on the bottom plate 311, and the position of the second fixing portion 42 corresponds to the position of the first fixing portion 41, for example, the second fixing portion 42 is disposed below the fixing member 32. Of course, in other embodiments, the first fixing portion 41 may be disposed on the side wall 312, and the second fixing portion 42 may be disposed on the side wall of the fixing member 32.
In one embodiment, the first fixing portion 41 is a groove, and the second fixing portion 42 is a bump; it is understood that, in other embodiments, the first fixing portion 41 is a protrusion, and the second fixing portion 42 is a groove.
Referring to fig. 5, when the first fixing portion 41 is a groove and the second fixing portion 42 is a bump, the height of the second fixing portion 42 is greater than the depth of the first fixing portion 41, and the width of the second fixing portion 42 is greater than the thickness of the reflection sheet 33.
Wherein the backlight module 10 further comprises a light source (not shown in the figure) located between the reflective sheet 33 and the bottom plate 311; in one embodiment, the light source 12 is an organic light emitting diode light bar, although the specific structure of the light source is not limited.
As shown in fig. 9, the display device 100 includes the backlight module 30, and the display device may further include a liquid crystal display panel 20.
The liquid crystal display panel 20 is disposed on the backlight module 10, and in one embodiment, the liquid crystal display panel includes a first polarizer, a body portion, and a first polarizer. Wherein the body part may include first and second substrates and a liquid crystal layer disposed between the first and second substrates. In one embodiment, the first substrate may be an array substrate, and the second substrate may be a color filter substrate. The display device can be applied to a display module in an automobile.
The display device 100 may further include a housing 22, and the housing 22 is used for accommodating the liquid crystal display panel 20 and the backlight module 30.
In another embodiment, the display device may further include a touch screen. The display device includes, but is not limited to, an in-vehicle display device.
The first fixing part is arranged on the back plate; and the second fixing part is arranged on the fixing part, so that the first fixing part and the second fixing part are matched with each other as shown by a dotted line frame in fig. 5 and 9, so that the position of the light guide plate is limited, the position of the light guide plate is prevented from being deviated in the vibration process, and the display effect is improved.
The backlight module and the display device comprise a back plate, wherein the back plate comprises a side wall, and a first fixing part is arranged on the back plate; the light guide plate is positioned in the back plate; the light guide plate and the back plate are arranged at intervals; wherein a fixing piece is arranged between the back plate and the light guide plate; the fixing piece is provided with a second fixing part, and the first fixing part and the second fixing part are matched with each other to limit the position of the light guide plate; the first fixing part and the second fixing part are matched with each other to limit the position of the light guide plate, so that the position of the light guide plate is prevented from being deviated, and the display effect is improved.
In summary, although the present invention has been described with reference to the preferred embodiments, the above-described preferred embodiments are not intended to limit the present invention, and those skilled in the art can make various changes and modifications without departing from the spirit and scope of the present invention, therefore, the scope of the present invention shall be determined by the appended claims.
Claims (10)
1. A backlight module, comprising:
the back plate comprises a side wall, and a first fixing part is arranged on the back plate;
the light guide plate is positioned in the back plate; the light guide plate and the back plate are arranged at intervals;
wherein a fixing piece is arranged between the back plate and the light guide plate; the fixing piece is provided with a second fixing part, and the first fixing part and the second fixing part are matched with each other to limit the position of the light guide plate.
2. The backlight module of claim 1,
one end of the fixing piece is connected with one end of the second fixing portion, and the fixing piece is perpendicular to the second fixing portion.
3. The backlight module of claim 2,
the back plate further comprises a bottom plate, the backlight module further comprises a reflector plate, the reflector plate is also positioned in the back plate, and the reflector plate is positioned on the light incident side of the light guide plate;
the second fixing part is located between the light incident side of the light guide plate and the bottom plate.
4. The backlight module of claim 3,
the second fixing portion and the reflection sheet are arranged at intervals.
5. The backlight module of claim 1,
the second fixing part is made of transparent flexible material.
6. The backlight module of claim 1,
the fixing piece surrounds the periphery of the light guide plate, and the second fixing portion is arranged at the bent position of the fixing piece.
7. The backlight module of claim 1,
and a reflecting layer is arranged on the surface of one side, close to the light guide plate, of the second fixing part.
8. The backlight module of claim 1,
the backboard further comprises a bottom plate, the first fixing part is arranged on the bottom plate, and the second fixing part is arranged below the fixing part.
9. The backlight module of claim 1,
the first fixing part is a groove, and the second fixing part is a bump.
10. A display device comprising the backlight module according to any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010578276.3A CN111708221B (en) | 2020-06-22 | 2020-06-22 | Backlight module and display device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010578276.3A CN111708221B (en) | 2020-06-22 | 2020-06-22 | Backlight module and display device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111708221A true CN111708221A (en) | 2020-09-25 |
| CN111708221B CN111708221B (en) | 2022-11-01 |
Family
ID=72541547
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010578276.3A Active CN111708221B (en) | 2020-06-22 | 2020-06-22 | Backlight module and display device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111708221B (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101430054A (en) * | 2008-12-25 | 2009-05-13 | 友达光电股份有限公司 | Flat display device and its backlight module |
| CN102434826A (en) * | 2011-07-14 | 2012-05-02 | 友达光电股份有限公司 | Backlight module and display device |
| CN102506344A (en) * | 2011-08-16 | 2012-06-20 | 友达光电股份有限公司 | Backlight module and display device using same |
| CN102620210A (en) * | 2012-03-30 | 2012-08-01 | 深圳市华星光电技术有限公司 | LCD (Liquid Crystal Display) device and backlight module thereof |
| CN102767753A (en) * | 2012-06-21 | 2012-11-07 | 深圳市华星光电技术有限公司 | Backlight module and liquid crystal display device |
| CN103591503A (en) * | 2013-01-15 | 2014-02-19 | 瑞仪光电(苏州)有限公司 | Light source module |
| TW201704788A (en) * | 2014-05-23 | 2017-02-01 | 瑞儀光電股份有限公司 | Back plate assembly and backlight module |
-
2020
- 2020-06-22 CN CN202010578276.3A patent/CN111708221B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101430054A (en) * | 2008-12-25 | 2009-05-13 | 友达光电股份有限公司 | Flat display device and its backlight module |
| CN102434826A (en) * | 2011-07-14 | 2012-05-02 | 友达光电股份有限公司 | Backlight module and display device |
| CN102506344A (en) * | 2011-08-16 | 2012-06-20 | 友达光电股份有限公司 | Backlight module and display device using same |
| CN102620210A (en) * | 2012-03-30 | 2012-08-01 | 深圳市华星光电技术有限公司 | LCD (Liquid Crystal Display) device and backlight module thereof |
| CN102767753A (en) * | 2012-06-21 | 2012-11-07 | 深圳市华星光电技术有限公司 | Backlight module and liquid crystal display device |
| CN103591503A (en) * | 2013-01-15 | 2014-02-19 | 瑞仪光电(苏州)有限公司 | Light source module |
| TW201704788A (en) * | 2014-05-23 | 2017-02-01 | 瑞儀光電股份有限公司 | Back plate assembly and backlight module |
Also Published As
| Publication number | Publication date |
|---|---|
| CN111708221B (en) | 2022-11-01 |
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