CN201757337U - LED backlight device, liquid crystal display and display terminal - Google Patents
LED backlight device, liquid crystal display and display terminal Download PDFInfo
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- CN201757337U CN201757337U CN2010202838932U CN201020283893U CN201757337U CN 201757337 U CN201757337 U CN 201757337U CN 2010202838932 U CN2010202838932 U CN 2010202838932U CN 201020283893 U CN201020283893 U CN 201020283893U CN 201757337 U CN201757337 U CN 201757337U
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- led
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- pcb board
- liquid crystal
- light source
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Abstract
The utility model is applicable to the field of liquid crystal displaying, and provides an LED backlight device, a liquid crystal display and a display terminal. The LED backlight device comprises a PCB loaded with LED light sources, a light guide board, a diffusion layer and a brightening layer are sequentially arranged in the emergent direction of the LED light sources, and slots arranged on the surface of the light guide board are in positional one-to-one correspondence to the LED light sources. The slots arranged on the surface of the light guide board of an existing direct type LED backlight device are in positional one-to-one correspondence to the LED light sources, and an actual emergence angle of emergent light of the LEDs after passing the light guide board is increased while light mixing distance is reduced, thereby realizing ultra-thinness of the LED liquid crystal display device.
Description
Technical field
The utility model belongs to field of liquid crystal display, relates in particular to a kind of LED-backlit device, LCD and display terminal.
Background technology
In recent years, develop rapidly along with the FPD field, impelled the fast development of backlight source of liquid crystal display apparatus, led light source since its have that colour gamut backlight is wide, energy-conserving and environment-protective, image quality advantages of higher, be widely used in field of liquid crystal display, particularly large scale LED liquid crystal indicator also begins to enter the industrialization stage, the direction of slimming, low power consumption, high brightness, the low-cost development of LED liquid crystal indicator especially.Existing down straight aphototropism mode set can provide high brightness and backlight uniformly for display floater, but because backlight is positioned at the panel below, needs to leave certain distance between backlight and the top blooming piece and be used for mixed light, causes back lighting device thickness bigger than normal.As shown in Figure 1, existing straight-down negative LED liquid crystal indicator comprises cover 11 and bonnet 17, cover 11 and bonnet 17 cooperate formation one cavity, are provided with LCD display 12, diffusion layer 13, brightness enhancement layer 14, pcb board 16 in this cavity, and pcb board 16 is provided with some led light sources 15.Though this directly-down liquid crystal display unit can satisfy the brightness requirement of display unit,, be difficult to satisfy the requirement of ultra-thinization of liquid crystal indicator because thickness is bigger.
The utility model content
The purpose of the utility model embodiment is to provide a kind of LED-backlit device, is intended to solve the existing bigger problem of straight-down negative LED liquid crystal indicator thickness.
The utility model embodiment is achieved in that the LED-backlit device, comprises the pcb board that is loaded with led light source, is provided with LGP, diffusion layer and brightness enhancement layer successively at the light direction of described led light source, and its described LGP surface is provided with groove;
The position of described groove is corresponding one by one with the position of described led light source.
As optimal technical scheme of the present utility model:
Described groove be arranged at described LGP towards or the surface of described led light source dorsad.
Described groove is arranged at described LGP towards reaching two surfaces of described led light source dorsad.
Described LGP is spliced by the LGP unit.
Described pcb board is spliced by the pcb board unit, and the position of described pcb board unit is corresponding one by one and big or small identical with the position of described LGP unit.
Described LGP is provided with supporter towards the surface of described pcb board, and described supporter passes described pcb board and stretches into described bonnet.
The described LGP surface of described pcb board dorsad is provided with the alligatoring micro-structural.
Described pcb board surface is provided with the reflecting layer.
Another purpose of the utility model embodiment is to provide a kind of LCD, and it has a direct-light type LED backlight device, and described LED-backlit device is above-mentioned LED-backlit device.
The another purpose of the utility model embodiment is to provide a kind of display terminal, and described display terminal comprises above-mentioned LCD.
The utility model embodiment is provided with groove on the LGP surface of existing direct-light type LED backlight device, and make the position of groove corresponding one by one with the position of led light source, the emergent light that makes LED is behind LGP, its actual angle of emergence increases, light mixing distance reduces, the thickness of LED-backlit device is reduced, and then make the LED liquid crystal indicator realize ultra-thinization.
Description of drawings
Fig. 1 is the structural representation of existing straight-down negative LED liquid crystal indicator;
Fig. 2 is the liquid crystal indicator structural representation that adopts the LED-backlit device that the utility model first embodiment provides;
Fig. 3 is the index path of the LED light that provides of the utility model first embodiment through LGP;
Fig. 4 is the pcb board piecemeal splicing construction schematic diagram that the utility model the 3rd embodiment provides;
Fig. 5 is the micro-structural schematic diagram on the LGP surface that provides of the utility model the 5th embodiment.
The specific embodiment
In order to make the purpose of this utility model, technical scheme and advantage clearer,, the utility model is further elaborated below in conjunction with drawings and Examples.Should be appreciated that specific embodiment described herein only in order to explanation the utility model, and be not used in qualification the utility model.
The utility model embodiment is provided with groove on the LGP surface of existing direct-light type LED backlight device, reduces light mixing distance by groove structure, reduces the thickness of back lighting device, and then reduces the thickness of liquid crystal indicator.
The utility model embodiment provides a kind of LED-backlit device, comprises the pcb board that is loaded with led light source, is provided with LGP, diffusion layer and brightness enhancement layer successively at the light direction of led light source, and the LGP surface is provided with groove;
The position of groove is corresponding one by one with the position of led light source.
The utility model embodiment also provides a kind of LCD, and it has a direct-light type LED backlight device, and this LED-backlit device is above-mentioned LED-backlit device.
The utility model embodiment also provides a kind of display terminal, and this display terminal comprises above-mentioned liquid crystal
Show device.
The utility model embodiment is provided with groove on the LGP surface of existing direct-light type LED backlight device, and make the position of groove corresponding one by one with the position of led light source, the emergent light that makes LED is behind LGP, its actual angle of emergence increases, light mixing distance reduces, make the LED-backlit device thinner, and then make the LED liquid crystal indicator realize ultra-thinization.
Below in conjunction with specific embodiment specific implementation of the present utility model is described in detail:
Embodiment one:
Fig. 2 shows the structural representation that adopts the LED-backlit device that the utility model first embodiment provides, and Fig. 3 shows the index path of LED light through LGP, for convenience of explanation, only shows the part relevant with the utility model embodiment.
This LED-backlit device comprises the pcb board 23 that is loaded with led light source 24, is provided with LGP 25, diffusion layer 26 and brightness enhancement layer 27 on the light direction of led light source 24 successively, in that diffusion layer 29 also can be set above the brightness enhancement layer 27, makes backlight more even.In order to reduce the thickness of LED-backlit device, on the surface of LGP 25 groove 251 is set, the position of this groove is corresponding one by one with the position of below led light source 24, so that groove 251 covers in led light source 24 tops.The light that led light source 24 sends is through groove location incident, and from the face ejaculation relative with groove, twice refraction takes place in light in this process, make the shooting angle of light become big, and then reduce light mixing distance, the emergent light of led light source can be mixed in small distance, thereby reduced the thickness of LED-backlit device.As shown in Figure 3, the light that led light source sends is through behind the LGP 25, and the angle of emergence increases to θ 2 by θ 1, and light mixing distance is reduced to L2 by L1.
This LED-backlit device is used to the directly-down liquid crystal display to provide backlight, structural representation further combined with the LCD of this LED-backlit device of employing shown in the accompanying drawing 2, cover 21 and bonnet 22 cooperate formation one cavity, set gradually this LED-backlit device and display screen 28 from bonnet 22 in the cavity.The groove structure of LGP 25 reduces the thickness of LED-backlit device significantly, and then makes straight-down negative LED liquid crystal indicator realize slimming.
Embodiment two:
In the utility model embodiment, please further in conjunction with the accompanying drawings 2, groove 251 can be arranged at the one side of LGP 25 towards led light source 24, also can be arranged on the one side of led light source 24 dorsad, is arranged on any one side and all can plays the purpose that increases the light angle of emergence.Can also groove all be set on above-mentioned two sides, the increase light angle of emergence that like this can be by a larger margin further reduces light mixing distance, makes the LED liquid crystal indicator thinner.The structure of this groove can have multiple, for example rule or irregular sunk structures such as pyramid type, pyramid type, circular platform type, prismoid shaped.
Embodiment three:
The required area backlight of large scale display screen is bigger, make that the area of LGP is also bigger, the oversize slight deformation that is easy to generate of LGP, influence uniformity of light, for fear of this phenomenon, the utility model embodiment is spliced to form an integral body with some small size LGPs unit, be used for substituting large-sized monolithic LGP, small size LGP unit is not yielding, can solve large-size light-conducting plate because deadweight produces distortion, influences the problem of uniformity of light.
Equally, for easy to assembly, pcb board also can be taked same piecemeal splicing construction, and Fig. 4 shows the structural representation of pcb board piecemeal splicing, for convenience of explanation, only shows the part relevant with the utility model embodiment.
Every pcb board unit 231 can be loaded with several led light sources, different pcb board unit can be loaded with the led light source of identical or different quantity, for easy to assembly, make each pcb board unit be set to identical size with the LGP unit, when assembling, at first, more a plurality of standard modules are stitched together a LGP unit and the fixing standard module that forms in pcb board unit.Above the good LGP of splicing, set gradually diffusion layer 26, brightness enhancement layer 27 and display screen 28 then.In that diffusion layer 29 also can be set between brightness enhancement layer 27 and the display screen 28, so that brightness of display screen is more even.In addition, LGP 25 can be provided with some protruding 253 towards the face of diffusion layer 26, be used for supporting diffusion layer 26.
Embodiment four:
In the utility model embodiment, further combined with accompanying drawing 2, LGP 25 can be provided with supporter 252 towards the face of pcb board 23, and this supporter passes in the bonnet 22 that pcb board 23 stretches into display unit, makes LGP 25, pcb board 23 and bonnet 22 relative fixed.In addition, can also reflecting layer 30 be set, be used for the next light reflected back LGP of LGP 25 reflections is increased the utilization rate of light on pcb board 23 surfaces.
Embodiment five:
In the utility model embodiment, in order further to improve uniformity backlight, can micro-structural be set at the exiting surface of LGP with coarse surface, reach the purpose of even bright dipping.Fig. 5 shows the micro-structural schematic diagram that the utility model the 5th embodiment provides, and for convenience of explanation, only shows the part relevant with the utility model embodiment.
This micro-structural is gathered to arrange by some microstructure units 254 and is formed, rule or erose structures such as the rectangle that this microstructure unit 254 can be formed for structures such as some small minute surfaces, sags and crests, concavo-convex line, male and fomale(M﹠F)s, circle, ellipse, star, microstructure unit can be the closed curve shape, also can be closed curve shape not.Shape, size, density and arrangement mode by appropriate design microstructure unit 254 can increase the exiting surface of LGP 25, and make bright dipping more even.
The utility model embodiment is provided with groove on the LGP surface of existing direct-light type LED backlight device, and make the position of groove corresponding one by one with the position of led light source, the emergent light that makes LED is behind LGP, its actual angle of emergence increases, light mixing distance reduces, the thickness of LED-backlit device is reduced, and then make the LED liquid crystal indicator realize ultra-thinization.The two sides of pcb board all is provided with groove towards reaching dorsad at LGP, can further reduce the thickness of liquid crystal indicator.LGP with the piecemeal splicing substitutes large scale monolithic LGP, can solve large-size light-conducting plate because deadweight produces distortion, influences the problem of uniformity of light.On the LGP surface micro-structural is set, can increases the exiting surface of LGP, and make bright dipping more even.
The LED-backlit device that the utility model embodiment provides is mainly used in LCD, and this LCD can also can be used as LCD TV, the display unit of computer or other display terminals separately as a display device.
The above only is preferred embodiment of the present utility model; not in order to restriction the utility model; all any modifications of within spirit of the present utility model and principle, being done, be equal to and replace and improvement etc., all should be included within the protection domain of the present utility model.
Claims (10)
1.LED back lighting device comprises the pcb board that is loaded with led light source, is provided with LGP, diffusion layer and brightness enhancement layer successively at the light direction of described led light source, it is characterized in that described LGP surface is provided with groove;
The position of described groove is corresponding one by one with the position of described led light source.
2. LED-backlit device as claimed in claim 1 is characterized in that, described groove be arranged at described LGP towards or the surface of described led light source dorsad.
3. LED-backlit device as claimed in claim 1 is characterized in that, described groove is arranged at described LGP towards reaching two surfaces of described led light source dorsad.
4. LED-backlit device as claimed in claim 1 is characterized in that described LGP is spliced by the LGP unit.
5. LED-backlit device as claimed in claim 4 is characterized in that described pcb board is spliced by the pcb board unit, and the position of described pcb board unit is corresponding one by one and big or small identical with the position of described LGP unit.
6. LED-backlit device as claimed in claim 1 is characterized in that described LGP is provided with supporter towards the surface of described pcb board.
7. LED-backlit device as claimed in claim 1 is characterized in that, the described LGP surface of described pcb board dorsad is provided with the alligatoring micro-structural.
8. LED-backlit device as claimed in claim 1 is characterized in that, described pcb board surface is provided with the reflecting layer.
9. LCD, it has a direct-light type LED backlight device, it is characterized in that, and described LED-backlit device is each described LED-backlit device of claim 1 to 8.
10. a display terminal is characterized in that, described display terminal comprises the described LCD of claim 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202838932U CN201757337U (en) | 2010-08-06 | 2010-08-06 | LED backlight device, liquid crystal display and display terminal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202838932U CN201757337U (en) | 2010-08-06 | 2010-08-06 | LED backlight device, liquid crystal display and display terminal |
Publications (1)
| Publication Number | Publication Date |
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| CN201757337U true CN201757337U (en) | 2011-03-09 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2010202838932U Expired - Fee Related CN201757337U (en) | 2010-08-06 | 2010-08-06 | LED backlight device, liquid crystal display and display terminal |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102182966A (en) * | 2011-05-06 | 2011-09-14 | 合肥美菱股份有限公司 | Backlight lighting device and backlight lighting method thereof |
| CN103836458A (en) * | 2012-11-22 | 2014-06-04 | 瑞仪光电股份有限公司 | Backlight module |
| CN105404053A (en) * | 2015-12-04 | 2016-03-16 | 青岛海信电器股份有限公司 | Backlight module set and display device |
| WO2016145670A1 (en) * | 2015-03-17 | 2016-09-22 | 深圳市华星光电技术有限公司 | Smart watch and liquid crystal screen |
| CN108279530A (en) * | 2018-01-23 | 2018-07-13 | 深圳市隆利科技股份有限公司 | A kind of mobile phone bottom luminous backlight source |
| CN108519639A (en) * | 2018-04-18 | 2018-09-11 | 京东方科技集团股份有限公司 | Guide-lighting membrane material, down straight aphototropism mode set and display device |
| CN108732816A (en) * | 2018-05-22 | 2018-11-02 | 武汉华星光电技术有限公司 | Area source backlight module and liquid crystal display panel |
| CN109031510A (en) * | 2018-08-24 | 2018-12-18 | 京东方科技集团股份有限公司 | A kind of light guide plate and preparation method thereof, backlight module and display device |
| CN110850637A (en) * | 2019-11-29 | 2020-02-28 | 维沃移动通信有限公司 | Backlight module and electronic equipment |
| WO2020042220A1 (en) * | 2018-08-31 | 2020-03-05 | 惠州市华星光电技术有限公司 | Direct type backlight module and light emitting diode array |
-
2010
- 2010-08-06 CN CN2010202838932U patent/CN201757337U/en not_active Expired - Fee Related
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102182966A (en) * | 2011-05-06 | 2011-09-14 | 合肥美菱股份有限公司 | Backlight lighting device and backlight lighting method thereof |
| CN103836458A (en) * | 2012-11-22 | 2014-06-04 | 瑞仪光电股份有限公司 | Backlight module |
| WO2016145670A1 (en) * | 2015-03-17 | 2016-09-22 | 深圳市华星光电技术有限公司 | Smart watch and liquid crystal screen |
| CN105404053A (en) * | 2015-12-04 | 2016-03-16 | 青岛海信电器股份有限公司 | Backlight module set and display device |
| CN108279530A (en) * | 2018-01-23 | 2018-07-13 | 深圳市隆利科技股份有限公司 | A kind of mobile phone bottom luminous backlight source |
| US10670916B2 (en) | 2018-04-18 | 2020-06-02 | Beijing Boe Optoelectronics Technology Co., Ltd. | Light guiding film, direct type backlight module and display device |
| CN108519639A (en) * | 2018-04-18 | 2018-09-11 | 京东方科技集团股份有限公司 | Guide-lighting membrane material, down straight aphototropism mode set and display device |
| CN108732816A (en) * | 2018-05-22 | 2018-11-02 | 武汉华星光电技术有限公司 | Area source backlight module and liquid crystal display panel |
| CN109031510A (en) * | 2018-08-24 | 2018-12-18 | 京东方科技集团股份有限公司 | A kind of light guide plate and preparation method thereof, backlight module and display device |
| CN109031510B (en) * | 2018-08-24 | 2020-06-30 | 京东方科技集团股份有限公司 | Light guide plate and manufacturing method thereof, backlight module and display device |
| US10782469B2 (en) | 2018-08-24 | 2020-09-22 | Boe Technology Group Co., Ltd. | Light guide plate and its fabricating method, as well as backlight module |
| WO2020042220A1 (en) * | 2018-08-31 | 2020-03-05 | 惠州市华星光电技术有限公司 | Direct type backlight module and light emitting diode array |
| CN110850637A (en) * | 2019-11-29 | 2020-02-28 | 维沃移动通信有限公司 | Backlight module and electronic equipment |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110309 Termination date: 20160806 |