CN204069051U - A kind of cell phone back tabula rasa eliminating light in part white line - Google Patents
A kind of cell phone back tabula rasa eliminating light in part white line Download PDFInfo
- Publication number
- CN204069051U CN204069051U CN201420364232.0U CN201420364232U CN204069051U CN 204069051 U CN204069051 U CN 204069051U CN 201420364232 U CN201420364232 U CN 201420364232U CN 204069051 U CN204069051 U CN 204069051U
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- China
- Prior art keywords
- light
- guide plate
- reflector plate
- white line
- light guide
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Abstract
The utility model discloses a kind of cell phone back tabula rasa eliminating light in part white line, backlight luminescence region primarily of anti-dazzling screen, upper and lower brightening piece, diffusion sheet, light guide plate, reflector plate combines successively and is placed in grooved housing and forms; Described light guide plate upper strata is fitted with diffusion sheet; Described light guide plate lower floor is fitted with reflector plate; Described reflector plate lower floor is provided with grooved housing; The bottom of described light guide plate is pasted with LED light source, and sectored light projects in light guide plate by LED light source; The corresponding LED light source top of described anti-dazzling screen has been sticked shading rubber belt; The corresponding grooved housing in described reflector plate bottom is provided with equally distributed card interface; Described reflector plate bottom is cut out LED light source both sides light leak mouth.The utility model uses simple structure, improves the white line problem that backlight exists, improves product quality, reduce production difficulty, very have market popularization value.
Description
Technical field
The utility model relates to mobile phone display screen technical field, is a kind of cell phone back tabula rasa eliminating light in part white line specifically.
Background technology
Being used in the backlight of display screen at present, is all narrow frame mode, and in order to realize high-resolution, and the transmitance of LCD plate gradually in decline, but is play in order to image, LCD plate through after brightness requirement at more than minimum value 400NIT.
Wherein a kind of parts in backlight module are called reflector plate, at present a lot of company only according to the profile of product as rectangle/square _type layout, but this design has very large drawback in narrow edge frame product, because frame is narrow, so multiple film material, when not considering left-right, after having assembled lighting, the monolateral or bilateral white line that has produces, light in part: the defect of source region embodies clearly.
In order to overcome the low transmission of this LCD PANEL (forms), the brightness requirement being used in display backlight is frequently very high.
In order to meet this high luminance values, the quantity of high-brightness LED and increase LED must be used, and the light loss rate of LED reached and minimize, but also will ensure that the angle of bright dipping is vertical with light-emitting area, so the reflector plate needing reflectivity higher and material are the glue frame of white.
But also diffusion sheet and 2 brightening pieces or compound brightening piece 1 must be used, the more unnecessary light anti-dazzling screen reflected is blocked.
But in the process making this high brightness backlights, from the LED light out of high luminosity, because the distance with glue frame barricade is very near, cause the light that reflects very bright, produce white line bad phenomenon.
In order to improve the quick-fried lamp of this light in part and white line phenomenon, be suitable for two kinds of methods in the past, a kind of is site by improving light guide plate.Another kind is the wedge structure by improving light guide plate.
But when using above two kinds of methods, reach the effect improving white line undesirable.
Summary of the invention
In order to solve the problems of the prior art, the purpose of this utility model is to provide a kind of cell phone back tabula rasa eliminating light in part white line.
The technical scheme adopted for realizing the purpose of this utility model is:
Eliminate a cell phone back tabula rasa for light in part white line, backlight luminescence region primarily of anti-dazzling screen, upper and lower brightening piece, diffusion sheet, light guide plate, reflector plate combines successively and is placed in grooved housing and forms;
Described light guide plate upper strata is fitted with diffusion sheet;
Described light guide plate lower floor is fitted with reflector plate;
Described reflector plate lower floor is provided with grooved housing;
The bottom of described light guide plate is pasted with LED light source, and sectored light projects in light guide plate by LED light source;
The corresponding LED light source top of described anti-dazzling screen has been sticked shading rubber belt;
The corresponding grooved housing in described reflector plate bottom is provided with equally distributed card interface;
Described reflector plate bottom is cut out LED light source both sides light leak mouth.
The beneficial effects of the utility model are:
1, the utility model holds cut away section subregion by about the reflector plate light in part placed below light guide plate, thus the light that light glue frame barricade being reflected come and light guide plate two ends are assembled, reflector plate can not be refracted to, but be refracted to the lower backlight enclosure of reflectivity, the light quantity that the luminance factor so reflexing to shell directly reflexes on reflector plate reduces by 50% ~ 60%, thus realize, the white line problem of the light in part left and right sides, backlight luminescence region.
2, the utility model uses simple structure, improves the white line problem that backlight exists, improves product quality, reduce production difficulty, very have market popularization value.
Accompanying drawing explanation
Fig. 1 is the overall structure figure of backlight.
Fig. 2 is light-emitting zone schematic diagram of the present utility model.
Fig. 3 is reflector plate schematic diagram of the present utility model.
Fig. 4 is the improvement design sketch after the utility model assembling.
Embodiment
Below in conjunction with Figure of description and Reference numeral, the utility model is further described.
As Figure 1-4, a kind of cell phone back tabula rasa eliminating light in part white line, backlight luminescence region primarily of anti-dazzling screen 7, upper and lower brightening piece 6,5, diffusion sheet 4, light guide plate 3, reflector plate 2 to combine successively and is placed in grooved housing 1 and forms; Described light guide plate 3 upper strata is fitted with diffusion sheet 4; Described light guide plate 3 lower floor is fitted with reflector plate 2; Described reflector plate 2 lower floor is provided with grooved housing 5; The bottom of described light guide plate 3 is pasted with LED light source, and sectored light projects in light guide plate 3 by LED light source; The corresponding LED light source top of described anti-dazzling screen 7 has been sticked shading rubber belt; The corresponding grooved housing 5 in described reflector plate 2 bottom is provided with equally distributed card interface; Described reflector plate 2 bottom is cut out LED light source 12 both sides light leak mouth 14.
Described grooved housing 5 surrounding is the glue frame barricade 13 of projection, is kept off by light on reflector plate 2.
Sectored light is evenly distributed to light-emitting zone 11 by described light guide plate 3.
Described light leak mouth 14 is rectangle, is arranged at LED light source 12 end, is missed by the light of the light of reflector plate 2 and glue frame barricade 13.
Described grooved housing 5 bottom is provided with the alternately draw-in groove coordinated with card interface.
The alternately draw-in groove that described grooved housing 5 bottom is provided with also is equipped with LED light source 12.
Described light leak mouth 14 size is laterally 0.3 ~ 0.6mm, is vertically 12 ~ 16mm.
Embodiment
The light of injection from LED light source 12, is starting point at LED light source 12 center, forms fan-shaped bright dipping.The effect of light guide plate 3 is the light penetrated by LED light source 12, be evenly distributed to whole light-emitting zone 11, but when light is greater than critical angle incidence at light guide plate 3 edge with normal benchmark, can total reflection be caused, also known as total internal reflection, (critical angle more than about 42 °);
Light by light close (namely the refractive index of light in this medium is large) medium be mapped to light dredge the interface of (namely light refractive index in this medium is little) medium time, be all reflected back toward the phenomenon in former medium.This light can not cause the phenomenon of white line and quick-fried lamp.
But appear at edge normal be less than critical angle incident time, a part of light through light guide plate 3, and can encounter the glue frame barricade of distance about 0.1mm ~ 0.2mm, causes light reflection or scattering.Touch the light of glue frame barricade 13, reflect or scatter on the reflector plate 2 of light guide plate 3 lower end, and reflector plate 2 is nearer with the distance of glue frame barricade 13, the light touching reflector plate 2 can form mirror-reflection, causes stronger quick-fried lamp and white line phenomenon.
The present invention is the material behavior utilizing this mirror-reflection of reflector plate 2, reflector plate 2 and glue frame barricade 13 is kept at a distance, and the both sides, one end by reflector plate 2 are cut out light leak mouth 14; Prevent the phenomenon of white line or quick-fried lamp, and will therefore cause brightness to decline.The utility model can according to the size of product, and prorate accurately cuts light leak mouth 14, avoids cutting the excessive briliancy of whole backlight that causes of area and declines.
Reflector plate about 2 two ends are cut out light leak mouth 14, and light leak mouth 14 is laterally 0.5mm, is vertically 15mm; And improving quick-fried lamp and white line phenomenon, the length cut according to the difference of product size and area understand some difference, and according to percentage calculation, length will account for about 10% of whole reflector plate 2, and width cuts within the scope of 0.3mm ~ 0.5mm.
When glue frame barricade 13 is increased to more than 0.5mm with the distance of the end of reflector plate 2, prevent quick-fried lamp and white line phenomenon completely.
Claims (7)
1. eliminate a cell phone back tabula rasa for light in part white line, backlight luminescence region primarily of anti-dazzling screen, upper and lower brightening piece, diffusion sheet, light guide plate, reflector plate combines successively and is placed in grooved housing and forms;
It is characterized in that:
Described light guide plate upper strata is fitted with diffusion sheet;
Described light guide plate lower floor is fitted with reflector plate;
Described reflector plate lower floor is provided with grooved housing;
The bottom of described light guide plate is pasted with LED light source, and sectored light projects in light guide plate by LED light source;
The corresponding LED light source top of described anti-dazzling screen has been sticked shading rubber belt;
The corresponding grooved housing in described reflector plate bottom is provided with equally distributed card interface;
Described reflector plate bottom is cut out LED light source both sides light leak mouth.
2. a kind of cell phone back tabula rasa eliminating light in part white line according to claim 1, is characterized in that:
Described grooved housing surrounding is the glue frame barricade of projection, is kept off on reflector plate by light.
3. a kind of cell phone back tabula rasa eliminating light in part white line according to claim 1, is characterized in that:
Sectored light is evenly distributed to light-emitting zone by described light guide plate.
4. a kind of cell phone back tabula rasa eliminating light in part white line according to claim 1, is characterized in that:
Described light leak mouth is rectangle, is arranged at LED light source, is missed by the light of the light of reflector plate and glue frame barricade.
5. a kind of cell phone back tabula rasa eliminating light in part white line according to claim 1, is characterized in that:
Described grooved housing bottom is provided with the alternately draw-in groove coordinated with card interface.
6. a kind of cell phone back tabula rasa eliminating light in part white line according to claim 1, is characterized in that:
The alternately draw-in groove that described grooved housing bottom is provided with also is equipped with LED light source.
7. a kind of cell phone back tabula rasa eliminating light in part white line according to claim 1, is characterized in that:
Described light leak mouth size is laterally 0.3 ~ 0.6mm, is vertically 12 ~ 16mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420364232.0U CN204069051U (en) | 2014-07-02 | 2014-07-02 | A kind of cell phone back tabula rasa eliminating light in part white line |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420364232.0U CN204069051U (en) | 2014-07-02 | 2014-07-02 | A kind of cell phone back tabula rasa eliminating light in part white line |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204069051U true CN204069051U (en) | 2014-12-31 |
Family
ID=52210489
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420364232.0U Expired - Fee Related CN204069051U (en) | 2014-07-02 | 2014-07-02 | A kind of cell phone back tabula rasa eliminating light in part white line |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204069051U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105068317A (en) * | 2015-09-11 | 2015-11-18 | 武汉华星光电技术有限公司 | Backlight module, display module and terminal |
| CN106773307A (en) * | 2017-01-03 | 2017-05-31 | 深圳市宝明科技股份有限公司 | A kind of backlight module without glue frame |
| US10564346B2 (en) | 2017-10-20 | 2020-02-18 | Au Optronics (Suzhou) Corp., Ltd. | Backlight module and display device |
-
2014
- 2014-07-02 CN CN201420364232.0U patent/CN204069051U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105068317A (en) * | 2015-09-11 | 2015-11-18 | 武汉华星光电技术有限公司 | Backlight module, display module and terminal |
| CN106773307A (en) * | 2017-01-03 | 2017-05-31 | 深圳市宝明科技股份有限公司 | A kind of backlight module without glue frame |
| US10564346B2 (en) | 2017-10-20 | 2020-02-18 | Au Optronics (Suzhou) Corp., Ltd. | Backlight module and display device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20141231 Termination date: 20150702 |
|
| EXPY | Termination of patent right or utility model |