CN206906761U - A kind of backlight module for preventing light leak - Google Patents
A kind of backlight module for preventing light leak Download PDFInfo
- Publication number
- CN206906761U CN206906761U CN201720947718.0U CN201720947718U CN206906761U CN 206906761 U CN206906761 U CN 206906761U CN 201720947718 U CN201720947718 U CN 201720947718U CN 206906761 U CN206906761 U CN 206906761U
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- Prior art keywords
- light guide
- light
- guide plate
- light source
- arc
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- Planar Illumination Modules (AREA)
Abstract
The utility model provides a kind of backlight module for preventing light leak, reflector plate including backlight assembly and order stacking, light guide plate, lower diffusion sheet, lower brightening piece, upper brightening piece and upper diffusion sheet, light guide plate includes incidence surface, the exiting surface adjacent with incidence surface and the bottom surface relative with exiting surface, backlight assembly includes flexible print circuit board and the light source being connected electrically on flexible print circuit board, light source is located at the incidence surface edge of light guide plate, the height of light source is more than the thickness of light guide plate, light guide plate exiting surface is provided with arc light guide section close to the side of light source, the Partial Height that higher side and the light source of arc light guide section are higher by light guide plate is adapted, and the surface of arc light guide section is bonded with shading rubber belt.The light of light source the raised area can be directed in light guide plate and is used by the application by arc light guide section, the light of light source the raised area can be covered by shading rubber belt, avoid the phenomenon generation for being emitted directly toward the obvious light leak of liquid crystal display equipment screen edge appearance.
Description
Technical field
It the utility model is related to backlight technology field, and in particular to a kind of backlight module for preventing light leak.
Background technology
At present, with the fast development of liquid crystal display, requirement for backlight also more and more higher, increasingly fierce
Under market environment, performance of the backlight module in terms of slimming, low power consumption and high brightness just turns into the index that market is primarily upon.
Existing backlight module mainly includes：Reflectance coating, light guide plate, diffusion sheet, lower brightening piece, upper brightening piece and the backlight group stacked gradually
Part, backlight assembly are provided with light source.It is of the present utility model inventor has found that in the backlight module of ultrathin, lead
The thickness of tabula rasa is generally less than the thickness of light source, thus causes light source to be higher by the light part of light guide plate projected and fails arrival and lead
Tabula rasa is reflected off utilizing, but is emitted directly toward or is reflected into viewfinder area, is showed in liquid crystal display equipment screen edge
Obvious light leak, this display effect will substantially reduce the display quality of lcd products.
Utility model content
For in existing ultrathin backlight module, light guide plate is generally less than light source thickness, thus causes light source to be higher by
The light that the part of light guide plate is projected fails arrival light guide plate and is reflected off utilizing, but is emitted directly toward or is reflected into form
Area, the technical problem of obvious light leak is showed in liquid crystal display equipment screen edge, the utility model, which provides one kind, prevents light leak
Backlight module.
In order to solve the above-mentioned technical problem, the utility model employs following technical scheme：
A kind of backlight module for preventing light leak, including backlight assembly and the reflector plate of order stacking, light guide plate, lower diffusion
Piece, lower brightening piece, upper brightening piece and upper diffusion sheet, the light guide plate include incidence surface, with incidence surface adjacent exiting surface and
The bottom surface relative with exiting surface, the backlight assembly include flexible print circuit board and are connected electrically on flexible print circuit board
Light source, the light source are located at the incidence surface edge of light guide plate, and the height of the light source is more than the thickness of light guide plate, the light guide plate
Exiting surface is provided with arc light guide section close to the side of light source, and higher side and the light source of the arc light guide section are higher by light guide plate
Partial Height be adapted, and the surface of the arc light guide section is bonded with shading rubber belt.
Compared with prior art, in the backlight module provided by the utility model for preventing light leak, close to light source side
Light guide plate exiting surface is provided with arc light guide section, and higher side and the light source of arc light guide section are higher by the Partial Height phase of light guide plate
Adapt to, thus the light of light source the raised area can be directed in light guide plate and be used by the arc light guide section, improve light
The utilization rate of line；The surface of arc light guide section is bonded with shading rubber belt simultaneously, so as to which the light of light source the raised area is carried out
Masking, avoids the viewfinder area for being emitted directly toward liquid crystal display, it is therefore prevented that occurs obvious leakage in liquid crystal display equipment screen edge
Light, improve the display quality of product.
Further, light guide plate and the arc light guide section is formed in one structure, and the incidence surface and method of the light guide plate
Angle between line is more than 0 degree.
Further, the shading rubber belt is that black agate draws adhesive tape.
Further, the shading rubber belt is provided with reflective membrane close to the one side of arc light guide section.
Further, the surface of the arc light guide section is the curved surfaces seamlessly transitted.
Brief description of the drawings
Fig. 1 is the back light module unit structure schematic diagram provided by the utility model for preventing light leak.
In figure, 1, reflector plate；2nd, light guide plate；21st, incidence surface；22nd, exiting surface；23rd, bottom surface；24th, arc light guide section；3rd, under
Diffusion sheet；4th, lower brightening piece；5th, upper brightening piece；6th, upper diffusion sheet；7th, flexible print circuit board；8th, light source；9th, shading rubber belt.
Embodiment
In order that technological means, creation characteristic, reached purpose and effect that the utility model is realized are easy to understand, under
Face combines and is specifically illustrating, and the utility model is expanded on further.
In description of the present utility model, it is to be understood that term " longitudinal direction ", " radial direction ", " length ", " width ", " thickness
The side of the instruction such as degree ", " on ", " under ", "front", "rear", "left", "right", " vertical ", " level ", " top ", " bottom ", " interior ", " outer "
Position or position relationship are based on orientation shown in the drawings or position relationship, are for only for ease of description the utility model and simplification is retouched
State, rather than instruction or imply signified device or element there must be specific orientation, with specific azimuth configuration and operation,
Therefore it is not intended that to limitation of the present utility model.In description of the present utility model, unless otherwise indicated, " multiples' " contains
Justice is two or more.
, it is necessary to which explanation, unless otherwise clearly defined and limited, term " are pacified in description of the present utility model
Dress ", " connected ", " connection " should be interpreted broadly, for example, it may be fixedly connected or be detachably connected, or integratedly
Connection；Can be mechanical connection or electrical connection；Can be joined directly together, can also be indirectly connected by intermediary,
It can be the connection of two element internals.For the ordinary skill in the art, above-mentioned art can be understood with concrete condition
Concrete meaning of the language in the utility model.
It refer to shown in Fig. 1, the utility model provides a kind of backlight module for preventing light leak, including backlight assembly and order
Reflector plate 1, light guide plate 2, lower diffusion sheet 3, lower brightening piece 4, upper brightening piece 5 and the upper diffusion sheet 6 of stacking, the light guide plate 2 wrap
Incidence surface 21 is included, with exiting surface 22 that incidence surface 21 is adjacent and the bottom surface 23 relative with exiting surface 22, the backlight assembly bag
The light source 8 for including flexible print circuit board 7 and being connected electrically on flexible print circuit board 7, the light source 8 enter located at light guide plate 2
The edge of smooth surface 21, i.e., described light source 8 are set close to the incidence surface 21 of light guide plate 2, and the height of the light source 8 is more than light guide plate 2
Thickness, the light guide plate exiting surface are provided with arc light guide section 24 close to the side of light source 8, the arc light guide section 24 it is higher
The Partial Height that side is higher by light guide plate 2 with light source 8 is adapted, i.e., height and the light source 8 of described arc light guide section 24 are higher by portion
The height divided is corresponding, and the surface of the arc light guide section 24 is bonded with shading rubber belt 9.
Compared with prior art, in the backlight module provided by the utility model for preventing light leak, close to light source side
Light guide plate exiting surface is provided with arc light guide section, and higher side and the light source of arc light guide section are higher by the Partial Height phase of light guide plate
Adapt to, thus the light of light source the raised area can be directed in light guide plate and be used by the arc light guide section, improve light
The utilization rate of line；The surface of arc light guide section is bonded with shading rubber belt simultaneously, so as to which the light of light source the raised area is carried out
Masking, avoids the viewfinder area for being emitted directly toward liquid crystal display, it is therefore prevented that occurs obvious leakage in liquid crystal display equipment screen edge
Light, improve the display quality of product.
As specific embodiment, refer to shown in Fig. 1, the light guide plate 2 and arc light guide section 24 are formed in one structure,
Thus box lunch is in the light guide plate 2 and the processing and fabricating of arc light guide section 24, and the incidence surface 21 and normal of the light guide plate 2
Angle between (vertical direction) is more than 0 degree, i.e., the incidence surface 21 of described light guide plate 2 is designed to ramp structure, thus can change
Incident angle of the incident ray on incidence surface 21 is to reduce the injection of light, so as to increase the quantity of total reflection light, and then
Increase the amount of light projected from exiting surface 22, strengthen the light intensity of whole backlight module.
As specific embodiment, the shading rubber belt 9 is that black agate draws adhesive tape, thus can be to the table of arc light guide section 24
The light in face is covered, to prevent light from entering directly into lower diffusion sheet 3, lower brightening piece 4, upper brightening piece 5 and upper diffusion sheet 6
Deng part, it is possible thereby to be obviously improved the light leakage phenomena of liquid crystal display equipment screen edge.
As specific embodiment, the shading rubber belt 9 is provided with reflective membrane close to the one side of arc light guide section 24, i.e., described
The lower surface of shading rubber belt 9 is provided with one layer of reflective membrane (not shown), the light that thus will can be injected on the shading rubber belt 9
It is reflected back in light guide plate 2 and is totally reflected, improve the usage quantity of light source and the service efficiency of light, has reached preferably aobvious
Show effect.
As specific embodiment, it refer to shown in Fig. 1, the surface of the arc light guide section 24 is the arc table seamlessly transitted
Face, thus, it is possible to which preferably the light for projecting arc light guide section surface is reflected back in light guide plate 2, and make the light in light guide plate 2
More uniformly, utilization ratio of the light guide plate for light source light is improved.
Finally illustrate, above example is only unrestricted to illustrate the technical solution of the utility model, although ginseng
The utility model is described in detail according to preferred embodiment, it will be understood by those within the art that, can be to this
The technical scheme of utility model is modified or equivalent substitution, without departing from the objective and model of technical solutions of the utility model
Enclose, it all should cover among right of the present utility model.
Claims (5)
1. a kind of backlight module for preventing light leak, it is characterised in that the reflector plate (1) including backlight assembly and order stacking, lead
Tabula rasa (2), lower diffusion sheet (3), lower brightening piece (4), upper brightening piece (5) and upper diffusion sheet (6), the light guide plate (2) include into
Smooth surface (21), adjacent exiting surface (22) and the bottom surface (23) relative with exiting surface (22), the backlight with incidence surface (21)
Component includes flexible print circuit board (7) and the light source (8) being connected electrically on flexible print circuit board (7), the light source (8) set
In incidence surface (21) edge of light guide plate (2), the height of the light source (8) is more than the thickness of light guide plate (2), the light guide plate
(2) exiting surface (22) is provided with arc light guide section (24) close to the side of light source (8), the arc light guide section (24) it is higher by one
The Partial Height that side is higher by light guide plate (2) with light source (8) is adapted, and the surface of the arc light guide section (24) is bonded with shading
Adhesive tape (9).
2. the backlight module according to claim 1 for preventing light leak, it is characterised in that the light guide plate (2) and arc are led
Light portion (24) is formed in one structure, and angle of the incidence surface (21) of the light guide plate (2) between normal is more than 0 degree.
3. the backlight module according to claim 1 for preventing light leak, it is characterised in that the shading rubber belt (9) is black
Agate draws adhesive tape.
4. the backlight module according to claim 1 for preventing light leak, it is characterised in that the shading rubber belt (9) is close to arc
The one side of shape light guide section (24) is provided with reflective membrane.
5. the backlight module according to claim 4 for preventing light leak, it is characterised in that the table of the arc light guide section (24)
Face is the curved surfaces seamlessly transitted.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720947718.0U CN206906761U (en) | 2017-07-27 | 2017-07-27 | A kind of backlight module for preventing light leak |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720947718.0U CN206906761U (en) | 2017-07-27 | 2017-07-27 | A kind of backlight module for preventing light leak |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206906761U true CN206906761U (en) | 2018-01-19 |
Family
ID=61313348
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720947718.0U Expired - Fee Related CN206906761U (en) | 2017-07-27 | 2017-07-27 | A kind of backlight module for preventing light leak |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206906761U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108269493A (en) * | 2018-01-24 | 2018-07-10 | 广东欧珀移动通信有限公司 | Display device and electronic equipment |
| WO2021051327A1 (en) * | 2019-09-18 | 2021-03-25 | 京东方科技集团股份有限公司 | Backlight module, display module, and display device |
| CN115542611A (en) * | 2022-11-25 | 2022-12-30 | 惠科股份有限公司 | Backlight module and display device |
-
2017
- 2017-07-27 CN CN201720947718.0U patent/CN206906761U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108269493A (en) * | 2018-01-24 | 2018-07-10 | 广东欧珀移动通信有限公司 | Display device and electronic equipment |
| WO2021051327A1 (en) * | 2019-09-18 | 2021-03-25 | 京东方科技集团股份有限公司 | Backlight module, display module, and display device |
| CN113330361A (en) * | 2019-09-18 | 2021-08-31 | 京东方科技集团股份有限公司 | Backlight module, display module and display device |
| US11366264B2 (en) | 2019-09-18 | 2022-06-21 | Beijing Boe Optoelectronics Technology Co., Ltd. | Backlight module, display module and display device |
| CN115542611A (en) * | 2022-11-25 | 2022-12-30 | 惠科股份有限公司 | Backlight module and display device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180119 Termination date: 20200727 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |