CN104048221A - Backlight module - Google Patents
Backlight module Download PDFInfo
- Publication number
- CN104048221A CN104048221A CN201410306362.3A CN201410306362A CN104048221A CN 104048221 A CN104048221 A CN 104048221A CN 201410306362 A CN201410306362 A CN 201410306362A CN 104048221 A CN104048221 A CN 104048221A
- Authority
- CN
- China
- Prior art keywords
- light
- backlight module
- lgp
- quantum dot
- exiting surface
- 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.)
- Pending
Links
Landscapes
- Planar Illumination Modules (AREA)
Abstract
The invention provides a backlight module which comprises a light source and a light guide plate. The light guide plate comprises a light-exiting surface. The light source and the side face of the light guide plate or the end face, far away from the light-exiting surface, of the light guide plate are arranged oppositely. The backlight module further comprises a light effect enhancing medium, wherein the portion between the light source and the light guide plate is filled with the light effect enhancing medium, and/or the light-exiting surface of the light guide plate is coated with the light effect enhancing medium. According to the backlight module, as the portion between the light source and the light guide plate is filled with the light effect enhancing medium, and/or the light-exiting surface of the light guide plate is coated with the light effect enhancing medium, when light emitted from the light source passes through the light effect enhancing medium, the light effect enhancing medium will not have the adsorption effect on the light, loss of the light is reduced compared with that of the light passing through air, and the light-exiting efficiency of the backlight module is further improved. The backlight module is simple in structure and easy to realize, and the light effect of the backlight module is essentially improved by reducing interface loss.
Description
Technical field
The present invention relates to field of liquid crystal display, more specifically, relate to a kind of backlight module.
Background technology
Liquid crystal display is non-luminiferous display unit, need just can reach by backlight the function of demonstration.The quality of backlight performance can directly affect the video picture quality of liquid crystal display, and its cost accounts for the 3%-5% of liquid crystal display device module, and the electric power consuming accounts for 75% of module, can say that it is considerable spare part in liquid crystal display device module.In liquid crystal display, occupied most of market of liquid crystal display as the backlight of module, be divided into side-light type and straight-down negative according to liquid crystal display distributing position difference.As depicted in figs. 1 and 2, backlight module of the prior art comprises light source 1, LGP 2, reflector 3 and liquid crystal panel 4.
At present, the color gamut levels of main flow liquid crystal display device (comprising flat panel display equipment) is only in 72% left and right, even lower on the market.In order to improve colour gamut, quantum dot back light source technique arises at the historic moment, and the colour gamut that shows product can be increased to 100% grace system, has greatly enriched the expressive ability that shows product.But, adopt the problem of this scheme maximum to be that its light efficiency is extremely low, only have at present the half left and right of white light backlight on the market.Using in two kinds of routes of quantum dot backlight technology, minimum as the light efficiency of back light source technique with quantum dot pipe, even do not reach three grades of national energy consumption standards; Use quantum dot film slightly high, but also have certain gap from national secondary energy consumption standard.
In theory, because the spectrum of quantum dot is narrow, it does backlight than the light emitting diode of fluorescent powder packaging should superiority.But the actual data of coming of measuring but show that quantum dot backlight technology is to very poor efficiency of the utilization of energy.Two kinds of routes of existing quantum dot backlight technology respectively have fatal shortcoming: the backlight module that, adopts Quantum Dot Glass pipe, blue light source is increased from the distance of LGP, and the yardstick of quantum dot bar strengthens, LGP is inadequate to the coupling angle of light source, and the extraction efficiency of LGP is declined; Two, the backlight module that adopts quantum dot film, because having used too many scattering, and has directly increased light loss.Therefore, be necessary the backlight source module of prior art to improve to improve its light extraction efficiency.
Summary of the invention
The present invention aims to provide a kind of backlight module, to solve the lower problem of backlight module light extraction efficiency of prior art.
For solving the problems of the technologies described above, the invention provides a kind of backlight module, comprise light source and LGP, wherein, LGP comprises exiting surface, and the side of light source and LGP or be oppositely arranged away from the end face of exiting surface, and backlight module also comprises: light efficiency amplified medium, light efficiency amplified medium is filled between light source and LGP, and/or light efficiency amplified medium is coated on the exiting surface of LGP.
Further, light efficiency amplified medium is the material that refractive index is greater than 1.
Further, light efficiency amplified medium is silica gel material and/or macromolecular material.
Further, light efficiency amplified medium is the material that light transmittance is greater than 80%.
Further, light efficiency amplified medium is polydimethylsiloxaneresins resins or polymethacrylate resin or Merlon.
Further, the side of light source and LGP is oppositely arranged, and backlight module also comprises quantum dot pipe, and quantum dot pipe is arranged between light source and LGP; Wherein, light efficiency amplified medium is filled between quantum dot pipe and light source and/or between quantum dot pipe and LGP.
Further, the side of light source and LGP is oppositely arranged, and backlight module also comprises quantum dot film, and the exiting surface of quantum dot film and LGP is oppositely arranged; Wherein, light efficiency amplified medium is filled between quantum dot film and LGP, and/or light efficiency amplified medium is coated in the side away from exiting surface of quantum dot film.
Further, backlight module also comprises: liquid crystal panel, the exiting surface of liquid crystal panel and LGP is oppositely arranged.
Further, light efficiency amplified medium is filled between the exiting surface and liquid crystal panel of LGP.
Further, backlight module also comprises: reflector, the end face away from exiting surface of reflector and LGP is oppositely arranged.
Further, the end face away from exiting surface of light source and LGP is oppositely arranged, and light efficiency amplified medium is filled between light source and LGP, and/or light efficiency amplified medium is coated on the exiting surface of LGP.
Further, backlight module also comprises: quantum dot pipe, quantum dot pipe is arranged between light source and LGP.
Further, backlight module also comprises: quantum dot film, the exiting surface of quantum dot film and LGP is oppositely arranged.
Backlight module in the present invention is filled with light efficiency amplified medium at light source and LGP, and/or on the exiting surface of LGP, apply light efficiency amplified medium, like this, in the time that the light of launching from light source passes through this light efficiency amplified medium, this light efficiency amplified medium can not produce suction-operated to this light, pass and reduced the loss of light from air with respect to light, and then improved the light extraction efficiency of backlight module.
Back light module unit structure of the present invention is simple, be easy to realize, and its essence is the light efficiency that improves backlight module by reducing interface loss.
Brief description of the drawings
The accompanying drawing that forms the application's a part is used to provide a further understanding of the present invention, and schematic description and description of the present invention is used for explaining the present invention, does not form inappropriate limitation of the present invention.In the accompanying drawings:
Fig. 1 has schematically shown the front view of backlight module of the prior art;
Fig. 2 has schematically shown the top view of the backlight module in Fig. 1;
Fig. 3 has schematically shown the front view of the backlight module in an embodiment in the present invention;
Fig. 4 has schematically shown the top view of the backlight module in Fig. 3; And
Fig. 5 has schematically shown the top view of the backlight module in another embodiment in the present invention.
Reference numeral in figure: 1, light source; 2, LGP; 3, reflector; 4, liquid crystal panel; 10, light source; 20, LGP; 30, liquid crystal panel; 40, light efficiency amplified medium; 50, quantum dot pipe; 60, quantum dot film; 70, reflector.
Detailed description of the invention
Below in conjunction with accompanying drawing, embodiments of the invention are elaborated, but the multitude of different ways that the present invention can be defined by the claims and cover is implemented.
The invention provides a kind of backlight module, please refer to Fig. 3 to Fig. 5, comprise light source 10 and LGP 20, wherein, LGP 20 comprises exiting surface, and the side of light source 10 and LGP 20 or be oppositely arranged away from the end face of exiting surface, and backlight module also comprises: light efficiency amplified medium 40, light efficiency amplified medium 40 is filled between light source 10 and LGP 20, and/or light efficiency amplified medium 40 is coated on the exiting surface of LGP 20.
As shown in Figures 3 to 5, backlight module in the present invention is filled with light efficiency amplified medium 40 at light source 10 and LGP 20, and/or on the exiting surface of LGP 20, apply light efficiency amplified medium 40, like this, in the time that the light of launching from light source 10 passes through this light efficiency amplified medium 40, this light efficiency amplified medium 40 can not produce suction-operated to this light, passes and has reduced the loss of light, and then improved the light extraction efficiency of backlight module with respect to light from air.
Back light module unit structure of the present invention is simple, be easy to realize, and its essence is the light efficiency that improves backlight module by reducing interface loss.
In the time that light enters another medium from a kind of medium, not only can reflect, also can there is total reflection at interface.According to Fresnel equation, we know, the loss of light on interface is decided by the incident direction of light, the refractive index of incident medium and the refractive index of emergent medium.When we are in the incident direction situation that cannot change light, only have the impact by weakening interface, reduce the refractive index difference between incident medium and emergent medium, could effectively improve light extraction efficiency.
Preferably, the material that light efficiency amplified medium 40 is greater than 1 for refractive index.According to the impact of the comparison light transmission rate of the refractive index of being derived by Fresnel theory, can learn, the material that refractive index is greater than 1, absorption to light is fewer, therefore, as long as we insert the medium (refractive index is all greater than 1) of any not extinction in light path, just can make the bright dipping of whole system be greatly improved.
Preferably, light efficiency amplified medium 40 is silica gel material and/or macromolecular material.Preferably, this silica gel material is OE6550 silica gel (refractive index is 1.54).According to actual conditions, the also silica gel material of the optional MS1002 of selecting silica gel (refractive index is 1.41) or OE6450 silica gel (refractive index is 1.53).
Preferably, the material that light efficiency amplified medium 40 is greater than 80% for light transmittance.
Preferably, light efficiency amplified medium 40 is polydimethylsiloxaneresins resins or polymethacrylate resin or Merlon.
Preferably, light source 10 is oppositely arranged with the side of LGP 20, and backlight module also comprises quantum dot pipe 50, and quantum dot pipe 50 is arranged between light source 10 and LGP 20; Wherein, light efficiency amplified medium 40 is filled between quantum dot pipe 50 and light source 10 and/or between quantum dot pipe 50 and LGP 20.In backlight module, install after quantum dot pipe 50, the blue light that can make light source 10 launch is converted into white light.
Preferably, light source 10 is oppositely arranged with the side of LGP 20, and backlight module also comprises quantum dot film 60, and quantum dot film 60 is oppositely arranged with the exiting surface of LGP 20; Wherein, light efficiency amplified medium 40 is filled between quantum dot film 60 and LGP 20, and/or light efficiency amplified medium 40 is coated in the side away from exiting surface of quantum dot film 60.In backlight module, install after quantum dot film 60, the blue light that can make light source 10 launch is converted into white light.
Preferably, backlight module also comprises: liquid crystal panel 30, liquid crystal panel 30 is oppositely arranged with the exiting surface of LGP 20.
Preferably, light efficiency amplified medium 40 is filled between the exiting surface and liquid crystal panel 30 of LGP 20.
Preferably, backlight module also comprises: reflector 70, reflector 70 is oppositely arranged with the end face away from exiting surface of LGP 20.In backlight module, install after reflector 70, can improve reflection of light effect.
Preferably, light source 10 is oppositely arranged with the end face away from exiting surface of LGP 20, and light efficiency amplified medium 40 is filled between light source 10 and LGP 20, and/or light efficiency amplified medium 40 is coated on the exiting surface of LGP 20.
Preferably, backlight module also comprises: quantum dot pipe 50, quantum dot pipe 50 is arranged between light source 10 and LGP 20.
Preferably, backlight module also comprises: quantum dot film 60, quantum dot film 60 is oppositely arranged with the exiting surface of LGP 20.Preferably, quantum dot pipe 50 is made up of high-boron-silicon glass.The refractive index 1.47 of this high-boron-silicon glass.
We verify it according to experiment below, and light source is chosen 3014 packaging bodies, and 0.5W altogether adopts 3030 panel lights as test platform; In experiment, we have adopted the OE6550 silica gel of DOW CORNING, and its refractive index is 1.54; The glass of quantum dot tube wall is chosen high-boron-silicon glass, its refractive index 1.47, the ratio n1/n2=1.04 of refractive index; Adopt following two kinds of testing schemes:
One, between the exiting surface of quantum dot pipe 50 and LGP 20, coat light efficiency amplified medium 40:
We find, the luminous flux and the luminous power that have added the backlight module after light efficiency amplified medium will improve 12% than the effect not adding, and have improved the light efficiency of backlight module.
Two,, at light source 10, in the whole cavity that quantum dot pipe 50 and LGP 20 form, all fill up light efficiency amplified medium 40:
We find, the luminous flux and the luminous power ratio that have added the backlight module after light efficiency amplified medium 40 only add the effect of light efficiency amplified medium 40 also will improve 22% in exiting surface one side of quantum dot pipe 50, clearly see and add index matching medium not only the light efficiency of quantum dot pipe 50 to be improved to the effect of having played, and the light efficiency of original light source is improved to the effect of also having played.
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, for a person skilled in the art, the present invention can have various modifications and variations.Within the spirit and principles in the present invention all, any amendment of doing, be equal to replacement, improvement etc., within all should being included in protection scope of the present invention.
Claims (13)
1. a backlight module, comprise light source (10) and LGP (20), wherein, described LGP (20) comprises exiting surface, and the side of described light source (10) and described LGP (20) or be oppositely arranged away from the end face of described exiting surface, it is characterized in that, described backlight module also comprises:
Light efficiency amplified medium (40), described light efficiency amplified medium (40) is filled between described light source (10) and described LGP (20), and/or described light efficiency amplified medium (40) is coated on the described exiting surface of described LGP (20).
2. backlight module according to claim 1, is characterized in that, the material that described light efficiency amplified medium (40) is greater than 1 for refractive index.
3. backlight module according to claim 2, is characterized in that, described light efficiency amplified medium (40) is silica gel material and/or macromolecular material.
4. backlight module according to claim 1, is characterized in that, the material that described light efficiency amplified medium (40) is greater than 80% for light transmittance.
5. backlight module according to claim 1, is characterized in that, described light efficiency amplified medium (40) is polydimethylsiloxaneresins resins or polymethacrylate resin or Merlon.
6. backlight module according to claim 1, it is characterized in that, described light source (10) is oppositely arranged with the side of described LGP (20), and described backlight module also comprises quantum dot pipe (50), described quantum dot pipe (50) is arranged between described light source (10) and described LGP (20); Wherein, described light efficiency amplified medium (40) is filled between described quantum dot pipe (50) and described light source (10) and/or between described quantum dot pipe (50) and described LGP (20).
7. backlight module according to claim 1, it is characterized in that, described light source (10) is oppositely arranged with the side of described LGP (20), and described backlight module also comprises quantum dot film (60), described quantum dot film (60) is oppositely arranged with the exiting surface of described LGP (20); Wherein, described light efficiency amplified medium (40) is filled between described quantum dot film (60) and described LGP (20), and/or described light efficiency amplified medium (40) is coated in the side away from described exiting surface of described quantum dot film (60).
8. backlight module according to claim 1, is characterized in that, described backlight module also comprises:
Liquid crystal panel (30), described liquid crystal panel (30) is oppositely arranged with the exiting surface of described LGP (20).
9. backlight module according to claim 8, is characterized in that, described light efficiency amplified medium (40) is filled between the exiting surface and described liquid crystal panel (30) of described LGP (20).
10. according to the backlight module described in claim 6 or 7, it is characterized in that, described backlight module also comprises:
Reflector (70), described reflector (70) is oppositely arranged with the end face away from described exiting surface of described LGP (20).
11. backlight modules according to claim 1, it is characterized in that, described light source (10) is oppositely arranged with the end face away from described exiting surface of described LGP (20), and described light efficiency amplified medium (40) is filled between described light source (10) and described LGP (20), and/or described light efficiency amplified medium (40) is coated on the exiting surface of described LGP (20).
12. backlight modules according to claim 11, is characterized in that, described backlight module also comprises:
Quantum dot pipe (50), described quantum dot pipe (50) is arranged between described light source (10) and described LGP (20).
13. backlight modules according to claim 11, is characterized in that, described backlight module also comprises:
Quantum dot film (60), described quantum dot film (60) is oppositely arranged with the exiting surface of described LGP (20).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410306362.3A CN104048221A (en) | 2014-06-30 | 2014-06-30 | Backlight module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410306362.3A CN104048221A (en) | 2014-06-30 | 2014-06-30 | Backlight module |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104048221A true CN104048221A (en) | 2014-09-17 |
Family
ID=51501418
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410306362.3A Pending CN104048221A (en) | 2014-06-30 | 2014-06-30 | Backlight module |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104048221A (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104849910A (en) * | 2015-05-26 | 2015-08-19 | 武汉华星光电技术有限公司 | Quantum dot backlight module |
| CN105864723A (en) * | 2016-03-31 | 2016-08-17 | 纳晶科技股份有限公司 | Quantum dot film, backlight module comprising same and display equipment |
| CN106200123A (en) * | 2016-08-31 | 2016-12-07 | 张家港康得新光电材料有限公司 | A kind of quantum dot film and backlight module |
| CN106292065A (en) * | 2016-08-31 | 2017-01-04 | 张家港康得新光电材料有限公司 | Quantum dot film and backlight module |
| CN107561777A (en) * | 2017-08-30 | 2018-01-09 | 广东深越光电技术有限公司 | A kind of backlight module and its manufacturing process for being avoided that brightness unevenness |
| CN107561776A (en) * | 2017-08-30 | 2018-01-09 | 广东深越光电技术有限公司 | It is a kind of to strengthen backlight module of light efficiency and preparation method thereof |
| CN107703677A (en) * | 2017-08-30 | 2018-02-16 | 广东深越光电技术有限公司 | A kind of high integrated back light source structure of backlight precision |
| CN107728375A (en) * | 2017-08-30 | 2018-02-23 | 广东深越光电技术有限公司 | A kind of backlight module that can reduce usage quantity needed for LED |
| WO2018137313A1 (en) * | 2017-01-25 | 2018-08-02 | 深圳市绎立锐光科技开发有限公司 | Light source device |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201593727U (en) * | 2009-11-16 | 2010-09-29 | 华映光电股份有限公司 | Side light-entering type backlight module |
| CN201715364U (en) * | 2009-12-07 | 2011-01-19 | 金芃 | Luminescent element of light guide plate with new structure of LED backlight |
| KR20130019250A (en) * | 2011-08-16 | 2013-02-26 | 엘지디스플레이 주식회사 | Backlight unit and liquid crystal display device having the same |
| CN103343943A (en) * | 2013-05-08 | 2013-10-09 | 深圳市华星光电技术有限公司 | Backlight module of display device and white light LED |
| US20140119049A1 (en) * | 2012-10-26 | 2014-05-01 | Samsung Display Co., Ltd. | Backlight unit and display apparatus having the same |
-
2014
- 2014-06-30 CN CN201410306362.3A patent/CN104048221A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201593727U (en) * | 2009-11-16 | 2010-09-29 | 华映光电股份有限公司 | Side light-entering type backlight module |
| CN201715364U (en) * | 2009-12-07 | 2011-01-19 | 金芃 | Luminescent element of light guide plate with new structure of LED backlight |
| KR20130019250A (en) * | 2011-08-16 | 2013-02-26 | 엘지디스플레이 주식회사 | Backlight unit and liquid crystal display device having the same |
| US20140119049A1 (en) * | 2012-10-26 | 2014-05-01 | Samsung Display Co., Ltd. | Backlight unit and display apparatus having the same |
| CN103343943A (en) * | 2013-05-08 | 2013-10-09 | 深圳市华星光电技术有限公司 | Backlight module of display device and white light LED |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104849910A (en) * | 2015-05-26 | 2015-08-19 | 武汉华星光电技术有限公司 | Quantum dot backlight module |
| WO2016187918A1 (en) * | 2015-05-26 | 2016-12-01 | 武汉华星光电技术有限公司 | Quantum dot backlight module |
| CN105864723A (en) * | 2016-03-31 | 2016-08-17 | 纳晶科技股份有限公司 | Quantum dot film, backlight module comprising same and display equipment |
| CN106200123A (en) * | 2016-08-31 | 2016-12-07 | 张家港康得新光电材料有限公司 | A kind of quantum dot film and backlight module |
| CN106292065A (en) * | 2016-08-31 | 2017-01-04 | 张家港康得新光电材料有限公司 | Quantum dot film and backlight module |
| WO2018137313A1 (en) * | 2017-01-25 | 2018-08-02 | 深圳市绎立锐光科技开发有限公司 | Light source device |
| CN107561777A (en) * | 2017-08-30 | 2018-01-09 | 广东深越光电技术有限公司 | A kind of backlight module and its manufacturing process for being avoided that brightness unevenness |
| CN107561776A (en) * | 2017-08-30 | 2018-01-09 | 广东深越光电技术有限公司 | It is a kind of to strengthen backlight module of light efficiency and preparation method thereof |
| CN107703677A (en) * | 2017-08-30 | 2018-02-16 | 广东深越光电技术有限公司 | A kind of high integrated back light source structure of backlight precision |
| CN107728375A (en) * | 2017-08-30 | 2018-02-23 | 广东深越光电技术有限公司 | A kind of backlight module that can reduce usage quantity needed for LED |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104048221A (en) | Backlight module | |
| CN103511987B (en) | Light control lens and light source device thereof | |
| CN104459845B (en) | A kind of quantum dot light diffusion barrier | |
| CN105444045A (en) | LED luminescent device, a backlight unit and a display panel | |
| CN203849450U (en) | Light guide plate | |
| CN105444044A (en) | LED luminescent device, backlight unit and display panel | |
| CN201954400U (en) | LED mixed light backlight source | |
| CN201583767U (en) | Direct type ultra-thin liquid crystal display device | |
| CN105629541A (en) | Double-face display device | |
| JP6441507B2 (en) | Light guide plate, backlight module and display device | |
| CN105511008A (en) | Light guide device used for liquid crystal displayer | |
| WO2022233207A1 (en) | Surface light source apparatus and flat panel display apparatus | |
| CN103244871B (en) | Direct type backlight module and liquid crystal display device | |
| CN103744217A (en) | Backlight module and display device | |
| CN105259701A (en) | Light source assembly, backlight module and display device | |
| CN104061533A (en) | Light conduction device, backlight module and display device | |
| US20150002786A1 (en) | Backlight module and liquid crystal display apparatus | |
| CN203533426U (en) | Novel LED lens and liquid crystal display backlight screen | |
| US20140314376A1 (en) | Backlight module | |
| CN102809097B (en) | Backlight module and corresponding liquid crystal indicator | |
| CN205227050U (en) | Backlight module and display | |
| CN103899975A (en) | Backlight module | |
| CN106851160A (en) | A kind of backlight module and liquid crystal display device | |
| CN207601354U (en) | A kind of light guide plate of LCM | |
| CN207867067U (en) | Light guide plate and backlight module |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20140917 |
|
| RJ01 | Rejection of invention patent application after publication |