CN201439904U - Liquid crystal display backlight source - Google Patents
Liquid crystal display backlight source Download PDFInfo
- Publication number
- CN201439904U CN201439904U CN2009201309248U CN200920130924U CN201439904U CN 201439904 U CN201439904 U CN 201439904U CN 2009201309248 U CN2009201309248 U CN 2009201309248U CN 200920130924 U CN200920130924 U CN 200920130924U CN 201439904 U CN201439904 U CN 201439904U
- Authority
- CN
- China
- Prior art keywords
- light emitting
- backlight
- layer
- lcd
- emitting diode
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 239000004973 liquid crystal related substance Substances 0.000 title abstract description 6
- 238000009792 diffusion process Methods 0.000 claims abstract description 39
- 239000002245 particle Substances 0.000 claims description 21
- 239000000463 material Substances 0.000 claims description 10
- 239000007787 solid Substances 0.000 claims description 3
- 238000005516 engineering process Methods 0.000 abstract description 5
- 230000005693 optoelectronics Effects 0.000 abstract 1
- 238000004519 manufacturing process Methods 0.000 description 7
- 239000003086 colorant Substances 0.000 description 3
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 238000002834 transmittance Methods 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 239000010419 fine particle Substances 0.000 description 1
- 230000031700 light absorption Effects 0.000 description 1
Images
Landscapes
- Liquid Crystal (AREA)
Abstract
The utility model relates to optoelectronic technology, in particular to a liquid crystal display backlight source. The liquid crystal display backlight source comprises a soleplate, a light emitting diode, a diffusion layer and a refraction layer, wherein the light emitting diode is mounted on the soleplate; the diffusion layer is coated on the soleplate and covered on the light emitting diode; and the refraction layer is coated on the diffusion layer. The liquid crystal display backlight source has the advantage of uniform and high brightness.
Description
Technical field
The utility model relates to photoelectric technology, relates in particular to a kind of backlight of LCD.
Background technology
LCD is widely used in electronic products such as LCD TV, notebook computer, mobile phone, digital camera, personal digital assistant at present, and it has low in energy consumption, in light weight and thin thickness etc. a bit.
Because liquid crystal itself is not luminous, LCD need see through external light source come display frame, so the backlight module indispensable part that is LCD.Backlight module provides light source for LCD, mainly partly is made up of light source, LGP, blooming, framework etc.
Existing backlight generally can be divided into CCFL (Cold Cathode Fluorescent Lamp, cold cathode fluorescent lamp) backlight, LED (Light Emitting Diode, light emitting diode) backlight.Existing LED-backlit source is many uses with several layers of blooming collocation light emitting diode.Referring to Fig. 1, be the structural representation in existing LED-backlit source.LED-backlit source 100 has a plurality of LED package 110, and it is positioned on the base plate 130, and posts reflector plate 150 on the base plate 130, and collocation is diffusion sheet 170a, light-collecting piece 190 and last diffusion sheet 170b down, to reach required brightness.
Therefore, the multi-disc blooming need be used in existing LED-backlit source, so that LCD uniform luminance backlight to be provided, and then cause increasing the complexity of production cost and its technology, and its brightness does not reach desired level yet.
The utility model content
The purpose of this utility model is to provide a kind of backlight of LCD, solves available liquid crystal display backlight source production cost height, complex manufacturing technology, the not high shortcoming of brightness.
In order to achieve the above object, backlight of LCD of the present utility model comprises:
Base plate; Light emitting diode, described light emitting diode are installed on the described base plate; Diffusion layer, described diffusion layer is coated on the described base plate, and described light emitting diode is covered; Refracting layer, described refracting layer is coated on the described diffusion layer.
Alternatively, LCD of the present utility model also comprises: reflector layer, described reflector layer is coated on the described base plate, but described light emitting diode is not covered.
Wherein, described refracting layer is made up of the different light transmissive material of multilayer refractive index, and the refractive index of this multilayer light transmissive material increases progressively from bottom to top successively, thereby makes light penetrate described refracting layer with subvertical angle.Described diffusion layer is made up of light transmissive material and diffusion particle, and the refractive index of described diffusion layer is lower than the refractive index of described refracting layer.
A kind of fluorescent particles of described diffusion particle.Preferably, described diffusion particle comprises redness, green, blue-fluorescence particle.
Described light emitting diode is the white light-emitting diodes of solid color, and perhaps described light emitting diode is made up of red, green, blue three kinds of light emitting diodes.
Backlight of LCD of the present utility model has following beneficial effect:
Because have diffusion particle in the diffusion layer, light is spread to all directions by described diffusion particle, thereby makes the luminance uniformity of backlight good; Because the refractive index of refracting layer increases progressively from bottom to top successively, light penetrates refracting layer with the angle near the vertical refraction layer, thus the brightness that has improved backlight; Directly be coated on the base plate owing to diffusion layer simultaneously, refracting layer directly is coated on the diffusion layer, thereby the manufacture difficulty that reduces has also reduced production cost.
Description of drawings
In order to be illustrated more clearly in the utility model embodiment or technical scheme of the prior art, to do to introduce simply to the accompanying drawing of required use in embodiment or the description of the Prior Art below, apparently, accompanying drawing in describing below only is some embodiments of the present invention, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 is the structural representation of existing backlight of LCD;
Fig. 2 is the structural representation of the utility model first embodiment;
Fig. 3 is the structural representation of the utility model second embodiment;
The specific embodiment
For the utility model better is described, describe the utility model in detail below in conjunction with Figure of description.
Referring to Fig. 2, be the structural representation of the utility model first embodiment, shown backlight of LCD comprises: refracting layer 10, diffusion layer 11, base plate 12, light emitting diode 13; Described light emitting diode 13 is installed on the described base plate 12; Described diffusion layer 11 is coated on the described base plate 13, and described light emitting diode 13 is covered; Described refracting layer 10 is coated on the described diffusion layer 12.
Wherein, light emitting diode 13 can be the white light-emitting diodes of solid color, also can be made up of the light emitting diode of red, blue, green three kinds of colors, can certainly be made up of the light emitting diode of other random colors.When light emitting diode 13 was made up of the light emitting diode of red, blue, green three kinds of colors, the quantity of red light emitting diodes accounted for 60%～70%, and the quantity of blue LED accounts for 8%～13%, and the quantity of green LED accounts for 18%～25%.Simultaneously, light emitting diode 13 quantity can wait to determine according to the required brightness of size, the display of display.
Refracting layer 10 is made up of the different light transmissive material of multilayer refractive index, and the refractive index of this multilayer light transmissive material increases progressively from bottom to top successively, thereby makes light penetrate described refracting layer with subvertical angle.Equally, the light transmittance of refracting layer 10 each layers is also high, reaches 99%.As shown in Figure 2, the refractive index of the ground floor 101 of refracting layer 10 is n
1, the refractive index of the second layer 102 is n
2, the 3rd layer 103 refractive index is n
3, the 4th layer 104 refractive index is n
4, n then
1＞n
2＞n
3＞n
4
The backlight of LCD of the utility model first embodiment, diffusion layer to all the winds spreads the light that light emitting diode sends, make the uniformity of light of backlight of LCD good, refracting layer is adjusted direction with the light of different directions simultaneously, makes it almost vertically penetrate refracting layer, and the brightness of backlight of LCD is further improved, simultaneously, because diffusion layer, refracting layer can directly be coated with up, thereby the reduction of production difficulty, production cost also reduced.
Referring to Fig. 3, be the structural representation of the utility model second embodiment, the difference of second embodiment and first embodiment is as shown in the figure, second embodiment scribbles one deck reflecting layer 14 between base plate 12 and diffusion layer 11, but light emitting diode 13 is not covered.Described reflecting layer 14 can reflect back direction light backward, thereby improves the utilization rate of light, the brightness that further improves backlight of LCD.
The above is a preferred implementation of the present utility model; should be pointed out that for those skilled in the art, under the prerequisite that does not break away from the principle of the invention; can also make some improvements and modifications, these improvements and modifications also are considered as protection domain of the present utility model.
Claims (8)
1. a backlight of LCD is characterized in that, comprising:
Base plate;
Light emitting diode, described light emitting diode are installed on the described base plate;
Diffusion layer, described diffusion layer is coated on the described base plate, and described light emitting diode is covered;
Refracting layer, described refracting layer is coated on the described diffusion layer.
2. a kind of backlight of LCD as claimed in claim 1 is characterized in that, also comprises:
Reflector layer, described reflector layer is coated on the described base plate, but described light emitting diode is not covered.
3. a kind of backlight of LCD as claimed in claim 1 or 2, it is characterized in that, described refracting layer is made up of the different light transmissive material of multilayer refractive index, and the refractive index of this multilayer light transmissive material increases progressively from bottom to top successively, thereby makes light penetrate described refracting layer with subvertical angle.
4. a kind of backlight of LCD as claimed in claim 1 or 2 is characterized in that described diffusion layer is made up of light transmissive material and diffusion particle, and the refractive index of described diffusion layer is lower than the refractive index of described refracting layer.
5. a kind of backlight of LCD as claimed in claim 4 is characterized in that, a kind of fluorescent particles of described diffusion particle.
6. a kind of backlight of LCD as claimed in claim 5, device are characterised in that described diffusion particle comprises redness, green, blue-fluorescence particle.
7. a kind of backlight of LCD as claimed in claim 1 or 2 is characterized in that, described light emitting diode is the white light-emitting diodes of solid color.
8. a kind of backlight of LCD as claimed in claim 1 or 2 is characterized in that, described light emitting diode is made up of red, green, blue three kinds of light emitting diodes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201309248U CN201439904U (en) | 2009-04-24 | 2009-04-24 | Liquid crystal display backlight source |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201309248U CN201439904U (en) | 2009-04-24 | 2009-04-24 | Liquid crystal display backlight source |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201439904U true CN201439904U (en) | 2010-04-21 |
Family
ID=42544574
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009201309248U Expired - Fee Related CN201439904U (en) | 2009-04-24 | 2009-04-24 | Liquid crystal display backlight source |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201439904U (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103293573A (en) * | 2013-05-27 | 2013-09-11 | 北京京东方光电科技有限公司 | Light increasing piece, backlight source and liquid crystal display |
| CN108761907A (en) * | 2018-02-23 | 2018-11-06 | 友达光电股份有限公司 | Display device and backlight module thereof |
| WO2018223988A1 (en) * | 2017-06-08 | 2018-12-13 | 京东方科技集团股份有限公司 | Optical module and reflective display device having same |
| WO2020237972A1 (en) * | 2019-05-28 | 2020-12-03 | 武汉华星光电技术有限公司 | Backlight module and display device |
| CN113970859A (en) * | 2020-07-23 | 2022-01-25 | 惠州视维新技术有限公司 | Reflector plate, backlight module and display |
| CN115359732A (en) * | 2022-08-26 | 2022-11-18 | 深圳康佳电子科技有限公司 | Micro LED protection film, micro LED structure, display device and electronic equipment |
-
2009
- 2009-04-24 CN CN2009201309248U patent/CN201439904U/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103293573A (en) * | 2013-05-27 | 2013-09-11 | 北京京东方光电科技有限公司 | Light increasing piece, backlight source and liquid crystal display |
| US9383498B2 (en) | 2013-05-27 | 2016-07-05 | Beijing Boe Optoelectronics Technology Co., Ltd. | Light-condensing sheet, backlight and liquid crystal display |
| WO2018223988A1 (en) * | 2017-06-08 | 2018-12-13 | 京东方科技集团股份有限公司 | Optical module and reflective display device having same |
| CN108761907A (en) * | 2018-02-23 | 2018-11-06 | 友达光电股份有限公司 | Display device and backlight module thereof |
| WO2020237972A1 (en) * | 2019-05-28 | 2020-12-03 | 武汉华星光电技术有限公司 | Backlight module and display device |
| CN113970859A (en) * | 2020-07-23 | 2022-01-25 | 惠州视维新技术有限公司 | Reflector plate, backlight module and display |
| CN115359732A (en) * | 2022-08-26 | 2022-11-18 | 深圳康佳电子科技有限公司 | Micro LED protection film, micro LED structure, display device and electronic equipment |
| CN115359732B (en) * | 2022-08-26 | 2024-03-12 | 深圳康佳电子科技有限公司 | Micro LED protection film, micro LED structure, display device and electronic equipment |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104566015B (en) | A kind of quantum dot backlight module and display device | |
| CN201439904U (en) | Liquid crystal display backlight source | |
| TWM466278U (en) | Thinized direct type LED backlight module | |
| CN101144582A (en) | LED Backlight Module | |
| CN201177708Y (en) | liquid crystal structure | |
| CN203363863U (en) | Straight down type backlight module and display device | |
| CN204268262U (en) | Direct LED backlight | |
| CN201464763U (en) | Backlight source of liquid crystal display | |
| CN202813043U (en) | LED backlight source | |
| CN217333066U (en) | Backlight module | |
| CN203771224U (en) | Display device and backlight module thereof | |
| CN201412740Y (en) | Novel backlight source | |
| CN201803318U (en) | Light guide plate, back light module, and display device employing back light module | |
| CN201992470U (en) | LED backlight module | |
| CN201795430U (en) | Bottom lighting light guide plate of LED backlight module | |
| CN102720990A (en) | Lateral type light-emitting diode (LED) backlight module with glass light guide plate | |
| CN204268241U (en) | Backlight module, display module and display unit | |
| CN207718116U (en) | A kind of mobile telephone display backlight module | |
| CN203365862U (en) | Backlight module and liquid crystal display device | |
| CN103090313A (en) | Light guide plate capable of improving light-emitting diode (LED) lamp incidence light efficiency | |
| CN202791607U (en) | Backlight source and display device | |
| CN202708818U (en) | LED area source using side-glowing light-emitting column | |
| CN202647412U (en) | Glass light guide plate side-entering type light-emitting diode (LED) backlight module | |
| CN202647411U (en) | Novel glass light guide plate lateral entering type LED (light emitting diode) backlight module | |
| CN209486336U (en) | MULTILAYER COMPOSITE brightness enhancement film |
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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100421 Termination date: 20180424 |