CN206710755U - A kind of backlight module - Google Patents
A kind of backlight module Download PDFInfo
- Publication number
- CN206710755U CN206710755U CN201720554547.5U CN201720554547U CN206710755U CN 206710755 U CN206710755 U CN 206710755U CN 201720554547 U CN201720554547 U CN 201720554547U CN 206710755 U CN206710755 U CN 206710755U
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- China
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- backlight module
- diaphragm group
- optical diaphragm
- fixed strip
- protuberance
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Abstract
The utility model discloses a kind of backlight module, including light guide plate, optical diaphragm group and fixed strip, the light guide plate includes exiting surface and incidence surface, the optical diaphragm group is located on the exiting surface, the identical one end of the optical diaphragm group is provided with protuberance, the bottom of the fixed strip and the either end of exiting surface are fixed, and at least one step is formed at the top of the fixed strip, and the protuberance is bonded on the step by tack coat.By being provided with fixed strip in one end of light guide plate, the protuberance of optical diaphragm group one end is Nian Jie with fixed strip and mode that other three ends are not bonded, effectively prevent the phenomenon that optical diaphragm group occurs bending and deformation when expanding with heat and contract with cold from occurring, lift the display effect of backlight module.
Description
Technical field
Technical field of liquid crystal display is the utility model is related to, relates more specifically to a kind of backlight module.
Background technology
Backlight module is typically provided with liquid crystal display device, it is liquid crystal display device that backlight module, which is used in display,
Backlight is provided.The light source and reflector plate being layered on top of each other, light guide plate and several optical films are typically provided with backlight module
Piece, these diaphragms are used to handle the light that light source is sent, and the light in light source is further become uniform area light source.With
Develop in the trend that liquid crystal display die set narrows toward side wall at present, particularly middle large scale（It is more than more than 5 cun, particularly 12 cun）
Backlight module, the positioning of blooming piece is increasingly challenged, positions bad optical film and easily cause bending, taking off for diaphragm
Fall, when the environmental change of reliability testing, cause display effect abnormal.
At present, the fixed structure of blooming piece has and is pasted completely by adhesive tape or set locating dowel and fixed in the prior art
The mode in position hole realizes diaphragm and the fixation of light guide plate or glue frame, and these fixed forms make it that diaphragm is limited completely, do not had
There is activity, diaphragm easily occurs bending and deformation when expanding with heat and contract with cold because of no activity space, in turn results in display effect
Fruit is abnormal.
Utility model content
In order to solve the deficiencies in the prior art, the utility model, which provides one kind, effectively to prevent blooming piece in heat
The backlight module to be deformed during swollen shrinkage.
The utility model technique effect to be reached is realized by following scheme：A kind of backlight module, including light guide plate,
Optical diaphragm group and fixed strip, the light guide plate include exiting surface and incidence surface, and the optical diaphragm group is located at the exiting surface
On, the identical one end of the optical diaphragm group is provided with protuberance, and the bottom of the fixed strip and the either end of exiting surface are fixed, institute
At least one step is formed at the top for stating fixed strip, and the protuberance is bonded on the step by tack coat.
Preferably, the optical diaphragm group includes diffusion barrier, lower brightness enhancement film and upper brightness enhancement film.
Preferably, the step is 3, Nian Jie with the protuberance of the diffusion barrier, lower brightness enhancement film and upper brightness enhancement film respectively.
Preferably, the shoulder height is incremented by and either successively decreases step by step or mutually stagger step by step, itself and the blooming piece
The protuberance of group matches.
Preferably, the width of the step is 0.5-3.0mm, length 2-50mm.
Preferably, at least one boss, the height of the boss and the blooming piece are also formed with the fixed strip
The gross thickness of group is identical.
Preferably, the boss is two, is respectively formed at the both ends of the fixed strip.
Preferably, the adhesive linkage is double faced adhesive tape, and the length and width of the double faced adhesive tape is identical with the length and width of step.
Preferably, the optical diaphragm group other end relative with protuberance is provided with extension, the extension with light guide plate
The structure clamping of matching.
Preferably, in addition to light source, the light source is arranged on the relative side of incidence surface of light guide plate.
The utility model has advantages below：
By being provided with fixed strip in one end of light guide plate, the protuberance of optical diaphragm group one end it is Nian Jie with fixed strip and other
The mode that three ends are not bonded, effectively prevent the phenomenon that optical diaphragm group occurs bending and deformation when expanding with heat and contract with cold from occurring, the lifting back of the body
The display effect of optical mode group.
Brief description of the drawings
Fig. 1 is the profile of backlight module in the utility model；
Fig. 2 is the top view of the optical film fixing device of backlight module in the utility model；
Fig. 3 is the schematic diagram of fixed strip in Fig. 2；
Fig. 4 is the schematic diagram of optical film in Fig. 1.
Embodiment
The present invention will be described in detail with reference to the accompanying drawings and examples.
As Figure 1-4, a kind of backlight module, including light guide plate 1 and optical diaphragm group 2, the light guide plate 1 are provided with into light
Face 11 and exiting surface 12, the optical diaphragm group 2 are located at the top of the light guide plate 1, the exiting surface of light guide plate 1 described in face
12.The optical diaphragm group 2 includes diffusion barrier 21, lower brightness enhancement film 22 and upper brightness enhancement film 23, if it is desired, also including other films
Piece.Staggered positions include a protuberance 4 respectively on same one side of the diffusion barrier 21, lower brightness enhancement film 22 and upper brightness enhancement film 23.
The fixed structure also includes the fixed strip 3 being independently arranged, the bottom of fixed strip 3 and 12 any side of exiting surface
Fixed, at least one boss 31, height and the optics all on light guide plate 1 of the boss 31 are formed at the top of fixed strip 3
The gross thickness of diaphragm group 2 is identical, to position the optical diaphragm group 2 when optical diaphragm group 2 is assembled.On the fixed strip 3
Portion also forms at least one step 32, and the step 32 fixes the single diaphragm by adhered layer.As shown in the present embodiment figure
Show, the step 32 includes step 321, step 322 and the step 323 that height declines step by step, and the step 323 is used to paste most
Close to the protuberance of diffusion barrier 21 of light guide plate 1, the step 322 is used for the protuberance of lower brightness enhancement film 22 for pasting centre, described
Step 321 is used for the upper protuberance of increment film 23 for pasting the superiors.The quantity of step 32 and the optical film in the utility model
The quantity of piece group 2 is identical, the step 323, step 322, step 321 to the exiting surface 12 distance respectively with the diffusion
Film 21, lower brightness enhancement film 22, the distance of upper increment film 23 to the exiting surface 12 are equal.Optical diaphragm group 2 in the utility model
While being fixed on by adhered layer on the fixed strip 3, three sides need not be fixed using adhered layer in addition, the optical diaphragm group
2 when expanding with heat and contract with cold can be not in that optical film arches upward or the phenomenon of fold while fix, other position free shrinks.This
Backlight module in utility model large-sized liquid crystal display device in being more suitable for, generally more than 5 cun, particularly 12 cun with
On large-scale liquid crystal display device.
As a further improvement, the height of step 32 can be incremented by or successively decrease step by step step by step, can also mutually stagger,
It can realize that optical film is entirely fixed on the step 32 after it is Nian Jie with the protuberance of optical diaphragm group 2.Described
Difference in height between rank 32 is 0.01-0.2mm, is matched with the thickness of the diffusion barrier 21, lower brightness enhancement film 22, upper increment film 23.
The width of the step 32 is 0.5-3.0mm, length 2-50mm, the fixation of blooming piece can be ensured according to actual conditions, together
When can save material again.
As a further improvement, the boss 31 is two, the both ends of the fixed strip 3 are respectively formed at.The boss
31 length is 3-20mm, width 0.5-3.0mm, and material can be saved on the premise of the fixed optical diaphragm group 2 is ensured.
As a further improvement, the adhered layer can be double faced adhesive tape, length and width and the step 32 of the double faced adhesive tape
Length and width it is identical.The technique of double faced adhesive tape is relatively simple, facilitates easy-to-use.Certainly, what deserves to be explained is, have paste in the prior art
The structure of effect can be used as adhered layer, and here is omitted.
As a further improvement, one end opposite other end of the optical diaphragm group 2 provided with protuberance 4 is also provided with one and stretched
Go out portion 5, the structure phase clamping that the extension 5 and light guide plate 1 either match on lower frame or upper ledge, the light guide plate 1 or
Structure on lower frame or upper ledge is slightly larger than extension 5, and it is horizontal in the exiting surface can further to limit the optical diaphragm group 2
On large range displacement.The extension 5 is bonded not over tack coat, and the optical diaphragm group 2 can be allowed to expand with heat and contract with cold
When a small range displacement.
Backlight module of the present utility model also includes light source, and the light source is arranged on the phase of incidence surface 11 of the light guide plate 1
To side, uniform light is shown by light guide plate 1 and optical model sheet group 2.
It is last it should be noted that above example is only illustrating the technical scheme of the embodiment of the present invention rather than it is entered
Row limitation, although the embodiment of the present invention is described in detail with reference to preferred embodiment, one of ordinary skill in the art
It should be understood that can still be modified to the technical scheme of the embodiment of the present invention or equivalent substitution, and these modifications or wait
The scope of amended technical scheme disengaging technical scheme of the embodiment of the present invention can not also be made with replacement.
Claims (10)
1. a kind of backlight module, including light guide plate, optical diaphragm group and fixed strip, the light guide plate includes exiting surface and enters light
Face, the optical diaphragm group are located on the exiting surface, it is characterised in that the identical one end of the optical diaphragm group, which is provided with, to be protruded
Portion, the bottom of the fixed strip and the either end of exiting surface are fixed, and at least one step, institute are formed at the top of the fixed strip
Protuberance is stated to be bonded on the step by tack coat.
2. a kind of backlight module as claimed in claim 1, it is characterised in that the optical diaphragm group includes diffusion barrier, lower increasing
Bright film and upper brightness enhancement film.
A kind of 3. backlight module as claimed in claim 2, it is characterised in that the step is 3, respectively with the diffusion
The protuberance bonding of film, lower brightness enhancement film and upper brightness enhancement film.
4. a kind of backlight module as claimed in claim 3, it is characterised in that the shoulder height is incremented by or passed step by step step by step
Subtract or mutually stagger, the protuberance of itself and the optical diaphragm group matches.
5. a kind of backlight module as claimed in claim 4, it is characterised in that the width of the step is 0.5-3.0mm, length
For 2-50mm.
6. a kind of backlight module as claimed in claim 1, it is characterised in that be also formed with the fixed strip at least one convex
Platform, the height of the boss are identical with the gross thickness of the optical diaphragm group.
7. a kind of backlight module as claimed in claim 6, it is characterised in that the boss is two, is respectively formed at described
The both ends of fixed strip.
8. a kind of backlight module as claimed in claim 1, it is characterised in that the adhesive linkage is double faced adhesive tape, the double faced adhesive tape
Length and width it is identical with the length and width of step.
A kind of 9. backlight module as claimed in claim 1, it is characterised in that the optical diaphragm group other end relative with protuberance
Provided with extension, the extension and the structure clamping to match on light guide plate.
10. a kind of backlight module as claimed in claim 1, it is characterised in that be also arranged on leaded light including light source, the light source
The relative side of the incidence surface of plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720554547.5U CN206710755U (en) | 2017-05-18 | 2017-05-18 | A kind of backlight module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720554547.5U CN206710755U (en) | 2017-05-18 | 2017-05-18 | A kind of backlight module |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206710755U true CN206710755U (en) | 2017-12-05 |
Family
ID=60464582
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720554547.5U Active CN206710755U (en) | 2017-05-18 | 2017-05-18 | A kind of backlight module |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206710755U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108897116A (en) * | 2018-05-25 | 2018-11-27 | 京东方科技集团股份有限公司 | Backlight module and display device |
| CN110531460A (en) * | 2019-07-29 | 2019-12-03 | 武汉华星光电技术有限公司 | Backlight module and display device |
-
2017
- 2017-05-18 CN CN201720554547.5U patent/CN206710755U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108897116A (en) * | 2018-05-25 | 2018-11-27 | 京东方科技集团股份有限公司 | Backlight module and display device |
| CN110531460A (en) * | 2019-07-29 | 2019-12-03 | 武汉华星光电技术有限公司 | Backlight module and display device |
| WO2021017285A1 (en) * | 2019-07-29 | 2021-02-04 | 武汉华星光电技术有限公司 | Backlight module and display apparatus |
| CN110531460B (en) * | 2019-07-29 | 2024-04-30 | 武汉华星光电技术有限公司 | Backlight module and display device |
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