CN201803235U - 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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- CN201803235U CN201803235U CN2010202925930U CN201020292593U CN201803235U CN 201803235 U CN201803235 U CN 201803235U CN 2010202925930 U CN2010202925930 U CN 2010202925930U CN 201020292593 U CN201020292593 U CN 201020292593U CN 201803235 U CN201803235 U CN 201803235U
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- led
- led light
- light source
- fixture
- pcb board
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- 239000004973 liquid crystal related substance Substances 0.000 title abstract description 21
- 238000009792 diffusion process Methods 0.000 description 6
- 229920003229 poly(methyl methacrylate) Polymers 0.000 description 4
- 239000004926 polymethyl methacrylate Substances 0.000 description 4
- 239000000463 material Substances 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 238000002834 transmittance Methods 0.000 description 2
- -1 Merlon (PC) Substances 0.000 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 230000005142 aphototropism Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000003822 epoxy resin Substances 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 229910010272 inorganic material Inorganic materials 0.000 description 1
- 239000011147 inorganic material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000011368 organic material Substances 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 229920000647 polyepoxide Polymers 0.000 description 1
- 238000012797 qualification Methods 0.000 description 1
- 239000000741 silica gel Substances 0.000 description 1
- 229910002027 silica gel Inorganic materials 0.000 description 1
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Abstract
The utility model provides an LED backlight device, which is suitable for the field of liquid crystal displays. The LED backlight device comprises a PCB board carrying a plurality of LED light sources, wherein a negative lens is arranged in the light-emitting direction of each LED light source. The negative lenses are arranged above the LED light sources, the positions of the negative lenses are in one-to-one correspondence with those of the LED light sources, the actual emergence angle is increased, the mixed light distance is shortened, and the LED backlight device is thinner, so that the LED liquid crystal display can be ultra-thinned.
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 this utility model 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 is achieved in that a kind of LED-backlit device, comprises the pcb board that is loaded with some led light sources, is provided with negative lens at the light direction of each led light source.
As optimal technical scheme of the present utility model:
Described negative lens covers in described led light source outside.
Described negative lens is embedded in first inside grooves of a fixture, and described first groove is positioned at the surface of described fixture towards described led light source.
The described fixture surface of described led light source dorsad is provided with second groove, and the position of described second groove is corresponding one by one with the position of described first groove.
The described fixture surface of described led light source dorsad is provided with supporter.
Described pcb board is spliced by the pcb board unit.
Described fixture is spliced for the fixture unit, and the position of described fixture unit is corresponding one by one with the position of described pcb board unit.
Described pcb board surface is provided with the reflecting layer.
Another purpose of the present utility model is to provide a kind of LCD, and described LCD comprises above-mentioned LED-backlit device.
Another purpose of the present utility model is to provide a kind of display terminal, and described display terminal comprises above-mentioned LCD.
The utility model is provided with negative lens above led light source, and makes the position of negative lens corresponding one by one with the position of led light source, and the actual light angle of emergence is increased, and light mixing distance reduces, and makes the LED-backlit device thinner, and then makes the LED liquid crystal indicator realize ultra-thinization.
Description of drawings
Fig. 1 is existing straight-down negative LED liquid crystal indicator structural representation;
Fig. 2 is the LED-backlit apparatus structure schematic diagram that the utility model first embodiment provides;
Fig. 3 is the LED liquid crystal indicator structural representation that the utility model first embodiment provides;
Fig. 4 is the pcb board piecemeal splicing construction schematic diagram that the utility model the 3rd embodiment provides.
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 negative lens above the led light source of existing direct-light type LED backlight device, increased the light angle of emergence, light mixing distance is reduced, and then reduced the thickness of liquid crystal indicator.
The utility model embodiment provides a kind of LED-backlit device, and this LED-backlit device comprises the pcb board that is loaded with some led light sources, is provided with negative lens at the light direction of each led light source.
The utility model embodiment also provides a kind of LCD, and this LCD comprises above-mentioned LED-backlit device.
The utility model embodiment also provides a kind of display terminal, and this display terminal comprises above-mentioned LCD.
The utility model embodiment is provided with negative lens above led light source, and make the position of negative lens corresponding one by one with the position of led light source, and the actual light angle of emergence is increased, 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 of the LED-backlit device that the utility model first embodiment provides, Fig. 3 shows the structural representation of the LED liquid crystal indicator that the utility model first embodiment provides, for convenience of explanation, only show the part relevant with the utility model embodiment.
This LED-backlit device comprises the pcb board 21 that is loaded with led light source 22, and diffusion layer 23 and brightness enhancement layer 24 can be set on the light direction of led light source 22.In order to reduce the thickness of LED-backlit device, above the exiting surface of led light source 22, negative lens 25 is set, the position of negative lens 25 is corresponding one by one with the position of below led light source 22, the light that led light source 22 is sent penetrates by negative lens 25, to enlarge the light angle of emergence, reduce light mixing distance, and then reduce the thickness of LED-backlit device, and the LED emergent light can become more even through behind the negative lens 25, can improve the uniformity backlight.
This LED-backlit device is used to the directly-down liquid crystal display to provide backlight, and further combined with accompanying drawing 3, cover 26 and bonnet 27 cooperate formation one cavity, set gradually this LED-backlit device and display screen 28 from bonnet 27 in the cavity.Negative lens 25 is set above led light source 22 thickness of LED-backlit device is reduced significantly, and then make the LED liquid crystal indicator realize slimming.
Embodiment two:
Please further in conjunction with the accompanying drawings 2, the foregoing description one described a series of negative lenses 25 can be fixed in the following manner, one fixture 29 is set, one side in fixture 29 is provided with a series of first grooves 291, negative lens 25 is embedded in first groove 291 one to one, again this fixture is placed the led light source top to get final product.Further, that the position of second groove, 292, the second grooves 292 also can be set is corresponding one by one with the position of first groove 291 on the surface of led light source 22 dorsad in fixture 29, so that the light angle of emergence further increases, so that further reduces the thickness of back lighting device.
In the utility model embodiment, fixture 29 preferred light transmittance height and light plastic material (as polymethyl methacrylate (PMMA), Merlon (PC) etc.) material are injection molded.The high organic or inorganic material of negative lens 25 preferred light transmittances passes through the precision die injection mo(u)lding by materials such as polymethyl methacrylate (PMMA), Merlon (PC), glass, epoxy resin or silica gel.
Embodiment three:
In the utility model embodiment, for easy to assembly, pcb board 21 can adopt the 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 211 can be loaded with several led light sources 22, different pcb board unit can be loaded with the led light source 22 of identical or different quantity, for easy to assembly, make each pcb board unit 211 be set to identical size, promptly be loaded with the led light source 22 of equal number.Equally, fixture 29 also can adopt piecemeal splicing form, and the size that makes every fixture unit and pcb board unit 211 is big or small identical, when assembling, at first, more a plurality of standard modules are stitched together a pcb board unit 211 and the fixing standard module that forms in fixture unit.Above the good fixture 29 of splicing, set gradually diffusion layer 23, brightness enhancement layer 24 and display screen 28 then.In that the diffusion layer (not shown) also can be set between brightness enhancement layer 24 and the display screen 28, so that brightness of display screen is more even.In addition, fixture 29 can be provided with some supporters 293 towards the face of diffusion layer 23, is used for supporting diffusion layer 23.
Embodiment four:
Please further in conjunction with the accompanying drawings 2 or 3, in the utility model embodiment, can also reflecting layer 30 be set on pcb board 21 surfaces, with light reflected back lens or the fixture that fixture 29 reflections come, increase the utilization rate of light.
The utility model embodiment is provided with negative lens above led light source, and make the position of negative lens corresponding one by one with the position of led light source, and the actual angle of emergence of LED emergent light is increased, light mixing distance reduces, reduce the thickness of LED-backlit device, and then realized ultra-thinization of LED liquid crystal indicator.Adopt fixedly negative lens of a fixture, can also protect lens not contaminated; Exiting surface in fixture is provided with groove structure, can further increase the light angle of emergence, reduces back lighting device thickness; Pcb board adopts the piecemeal connecting method to be connected with fixture, is convenient to assembling.
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. a LED-backlit device comprises the pcb board that is loaded with some led light sources, it is characterized in that, is provided with negative lens at the light direction of each led light source.
2. LED-backlit device as claimed in claim 1 is characterized in that, described negative lens covers in described led light source outside.
3. LED-backlit device as claimed in claim 1 is characterized in that, described negative lens is embedded in first inside grooves of a fixture, and described first groove is positioned at the surface of described fixture towards described led light source.
4. LED-backlit device as claimed in claim 3 is characterized in that, the described fixture surface of described led light source dorsad is provided with second groove, and the position of described second groove is corresponding one by one with the position of described first groove.
5. LED-backlit device as claimed in claim 3 is characterized in that, the described fixture surface of described led light source dorsad is provided with supporter.
6. LED-backlit device as claimed in claim 1 is characterized in that described pcb board is spliced by the pcb board unit.
7. LED-backlit device as claimed in claim 6 is characterized in that, described fixture is spliced for the fixture unit, and the position of described fixture unit is corresponding one by one with the position of described pcb board unit.
8. LED-backlit device as claimed in claim 1 is characterized in that, described pcb board surface is provided with the reflecting layer.
9. a LCD is characterized in that, described LED LCD comprises 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 |
|---|---|---|---|
| CN2010202925930U CN201803235U (en) | 2010-08-16 | 2010-08-16 | LED backlight device, liquid crystal display and display terminal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202925930U CN201803235U (en) | 2010-08-16 | 2010-08-16 | LED backlight device, liquid crystal display and display terminal |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201803235U true CN201803235U (en) | 2011-04-20 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010202925930U Expired - Fee Related CN201803235U (en) | 2010-08-16 | 2010-08-16 | LED backlight device, liquid crystal display and display terminal |
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| CN (1) | CN201803235U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111006852A (en) * | 2019-12-16 | 2020-04-14 | 广东谨诺科技有限公司 | A backlight module for TFT/OLED detection |
| CN111024726A (en) * | 2019-12-16 | 2020-04-17 | 广东谨诺科技有限公司 | Backlight module and large-size TFT or OLED display panel detection platform |
| CN111308779A (en) * | 2020-03-05 | 2020-06-19 | 深圳市隆利科技股份有限公司 | Direct type backlight device and display equipment |
-
2010
- 2010-08-16 CN CN2010202925930U patent/CN201803235U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111006852A (en) * | 2019-12-16 | 2020-04-14 | 广东谨诺科技有限公司 | A backlight module for TFT/OLED detection |
| CN111024726A (en) * | 2019-12-16 | 2020-04-17 | 广东谨诺科技有限公司 | Backlight module and large-size TFT or OLED display panel detection platform |
| CN111006852B (en) * | 2019-12-16 | 2022-03-18 | 广东谨诺科技有限公司 | Large-size TFT/OLED display panel detection platform |
| CN111024726B (en) * | 2019-12-16 | 2023-02-10 | 广东谨诺科技有限公司 | Backlight module and large-size TFT or OLED display panel detection platform |
| CN111308779A (en) * | 2020-03-05 | 2020-06-19 | 深圳市隆利科技股份有限公司 | Direct type backlight device and display equipment |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: WUHAN DIGUANG ELECTRONICS CO., LTD. Free format text: FORMER OWNER: DIGUANG ELECTRONIC CO., LTD., SHENZHEN Effective date: 20130712 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 518026 SHENZHEN, GUANGDONG PROVINCE TO: 430000 WUHAN, HUBEI PROVINCE |
|
| TR01 | Transfer of patent right |
Effective date of registration: 20130712 Address after: 430000, No. 11, Zhuankou District, Hanyang Economic Development Zone, Wuhan, Hubei (AOC Display Technology Co.) Patentee after: Wuhan emperor optoelectronics Co., Ltd. Address before: Futian District Shenzhen City, Guangdong Province, CaiTian road 518026 No. 3069 Galaxy A 23 storey Century Towers Patentee before: Diguang Electronic Co., Ltd., Shenzhen |
|
| 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: 20110420 Termination date: 20170816 |