CN201902897U - Single-side light incidence LED (light-emitting diode) backlight module and television - Google Patents
Single-side light incidence LED (light-emitting diode) backlight module and television Download PDFInfo
- Publication number
- CN201902897U CN201902897U CN2010206089590U CN201020608959U CN201902897U CN 201902897 U CN201902897 U CN 201902897U CN 2010206089590 U CN2010206089590 U CN 2010206089590U CN 201020608959 U CN201020608959 U CN 201020608959U CN 201902897 U CN201902897 U CN 201902897U
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- Prior art keywords
- led
- light
- lgp
- reflection film
- guide plate
- Prior art date
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- Expired - Fee Related
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- 239000000463 material Substances 0.000 claims description 15
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 6
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims description 6
- 238000005507 spraying Methods 0.000 claims description 4
- 238000001771 vacuum deposition Methods 0.000 claims description 4
- ORUIBWPALBXDOA-UHFFFAOYSA-L magnesium fluoride Chemical compound [F-].[F-].[Mg+2] ORUIBWPALBXDOA-UHFFFAOYSA-L 0.000 claims description 3
- 229910001635 magnesium fluoride Inorganic materials 0.000 claims description 3
- 239000000377 silicon dioxide Substances 0.000 claims description 3
- 239000004408 titanium dioxide Substances 0.000 claims description 3
- 239000010410 layer Substances 0.000 abstract description 4
- 239000004973 liquid crystal related substance Substances 0.000 abstract description 4
- 230000007613 environmental effect Effects 0.000 abstract description 2
- 239000002356 single layer Substances 0.000 abstract description 2
- 238000004134 energy conservation Methods 0.000 abstract 1
- 230000003287 optical effect Effects 0.000 description 9
- 238000000576 coating method Methods 0.000 description 4
- 239000011248 coating agent Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 235000000177 Indigofera tinctoria Nutrition 0.000 description 2
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 229940097275 indigo Drugs 0.000 description 2
- COHYTHOBJLSHDF-UHFFFAOYSA-N indigo powder Natural products N1C2=CC=CC=C2C(=O)C1=C1C(=O)C2=CC=CC=C2N1 COHYTHOBJLSHDF-UHFFFAOYSA-N 0.000 description 2
- 238000005498 polishing Methods 0.000 description 2
- 239000006117 anti-reflective coating Substances 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 239000011247 coating layer Substances 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 230000035800 maturation Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 229920003229 poly(methyl methacrylate) Polymers 0.000 description 1
- 239000004926 polymethyl methacrylate Substances 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 238000007650 screen-printing Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000002834 transmittance Methods 0.000 description 1
- MEYZYGMYMLNUHJ-UHFFFAOYSA-N tunicamycin Natural products CC(C)CCCCCCCCCC=CC(=O)NC1C(O)C(O)C(CC(O)C2OC(C(O)C2O)N3C=CC(=O)NC3=O)OC1OC4OC(CO)C(O)C(O)C4NC(=O)C MEYZYGMYMLNUHJ-UHFFFAOYSA-N 0.000 description 1
Images
Abstract
The utility model discloses a single-side light incidence LED (light-emitting diode) backlight module which comprises a light guide plate (1), an LED lamp strip (2), white-light LEDs and a reflecting sheet (3), wherein the LED lamp strip (2) is arranged at one side of the light guide plate (1); the white-light LEDs are uniformly arranged on the lamp strip; the reflecting sheet (3) is arranged on the other side surface of the light guide plate (1); and at least one anti-reflection film (4) is arranged on the incidence surface of the light guide plate (1). Single-layer or multi-layer anti-reflection films are coated on the incidence surface of the light guide plate so that the incidence efficiency of the light guide plate is improved. One layer of anti-reflection film can reduce the reflection rate to 1.5%, and the multi-layer anti-reflection films can reduce the reflection rate to 0.25% so that the performance of the LED liquid crystal module is improved, and the performance of a liquid crystal television is optimized. In the condition that the same module brightness is obtained, the quantity of the LEDs can be reduced and the backlight power consumption is reduced so that the purposes of environmental protection and energy conservation are achieved. The utility model also discloses a television comprising the single-side light incidence LED backlight module.
Description
Technical field
The utility model relates to the LED-backlit module, relates in particular to a kind of LED-backlit module of one-sided light inlet.
Background technology
Along with sharply rising violently of China LED liquid crystal TV set demand, the development of LED-backlit module is swift and violent.And the illuminated LED-backlit module of side is a mainstream development direction.The LED-backlit module of at present common one-sided light inlet, as shown in Figure 1, this module backlight comprises LGP 1, is located at the LED lamp bar 2 of LGP downside, evenly distributed white light LEDs on the lamp bar, the reflector plate 3 of being located at the reflector plate at LGP 1 back side and being located at all the other sides of LGP.LGP is that the PMMA/PC with optical grade is a base material, as, acrylic material stamps the leaded light point at the LGP back side with the UV screen printing technology.The light that LED sends enters LGP 1 by downside, because the refractive index of acrylic sheet material is very high, total reflection when being mapped to plate surface, light takes place, when the light of total reflection is mapped to each leaded light point, reverberation can be toward all angles diffusion, formation diffuses, and penetrates by LGP is positive then.By various densitys, leaded light point not of uniform size, can make the LGP uniformly light-emitting.The reflector plate at the LGP back side, in the light reflected back LGP that the back side can be exposed, the light reflected back LGP that the reflector plate of side exposes the side is used for improving the service efficiency of light.
At present, the illuminated LED-backlit module of side adopts one-sided light inlet mode more and more in the industry, and after usually the former sheet material of LGP being cut, tangent plane again cuts into two exact halves---and incidence surface only carries out simple polishing, do not do further processing, and paste reflector plate for the non-incidence surface of LGP.As shown in Figure 2, when light enters different transmitter substance (as entering glass by air), nearly 5% can be reflected.In like manner, only carried out the incidence surface of the LGP of simple polishing, the light that LED sends is when air enters LGP 1, and also nearly 5% can be reflected, add because light guide plate is limit, LGP to go into optical efficiency not high.
How improving the optical efficiency of going into of LGP, is the industry problem demanding prompt solution.
Summary of the invention
The utility model is gone into the lower technical problem of optical efficiency for what solve existing LGP, and a kind of LED-backlit module that makes full use of the one-sided light inlet of led light source is provided.
The LED-backlit module of the one-sided light inlet that the utility model proposes, it comprises LGP, be located at the LED lamp bar of this LGP one side, be evenly arranged in white light LEDs on the lamp bar, be located at the reflector plate on all the other sides of LGP.The incidence surface of described LGP is provided with one deck anti-reflection film at least.
Wherein, described anti-reflection film is made by any material in the coating materials commonly used such as magnesium fluoride, silica, titanium dioxide.
The thickness of described one deck anti-reflection film is a kind of quarter-wave of optical wavelength wherein in seven kinds of coloured light of visible light (red, orange, yellow, green, blue, indigo, purple)
More excellent, described anti-reflection film is a multilayer, can by different-thickness and different materials is stacked constitutes.
Anti-reflection film on the described LGP incidence surface is provided with for adopting vacuum coating, UV spraying, any mode of common plated film.
The utility model also proposes a kind of television set that comprises the LED-backlit module of described one-sided light inlet.
The utility model plates the single or multiple lift anti-reflection film at the LGP incidence surface, in order to improve the optical efficiency of going into of LGP.One deck anti-reflection film can make reflection be reduced to 1.5%, and the multilayer anti-reflection film can make reflection be reduced to 0.25%, thereby promotes the performance of LED liquid crystal module, optimizes the LCD TV performance.Under the situation that obtains same module brightness, can reduce the quantity of LED, reduce backlight power consumption and reach the environmental protection and energy saving purpose.
Description of drawings
Fig. 1 is the schematic diagram of the LED-backlit module of existing one-sided light inlet;
The index path of incident ray when Fig. 2 does not have anti-reflection film for the incidence surface of LGP;
Fig. 3 is the schematic diagram of the utility model preferred embodiment;
The index path of incident ray when Fig. 4 is provided with anti-reflection film for the incidence surface of LGP.
The specific embodiment
As shown in Figure 3, schematic diagram for the utility model preferred embodiment, the LED-backlit module of described one-sided light inlet, comprise LGP 1, be located at this LGP downside LED lamp bar 2, be evenly arranged in white light LEDs on the lamp bar, be located at the reflector plate 3 on LGP 1 all the other sides, and be provided with one deck anti-reflection film 4 at least at the incidence surface-downside of LGP 1.In the present embodiment, anti-reflection film 4 is a multilayer, is made by magnesium fluoride.Also can make as coating materials commonly used such as silica, titanium dioxide as required by other materials.The thickness of one deck anti-reflection film 4 can be a kind of quarter-wave of optical wavelength wherein in seven kinds of coloured light of visible light (red, orange, yellow, green, blue, indigo, purple).For the structure of multilayer anti-reflection film 4, can adopt the stacked formation of different-thickness and different materials.Anti-reflection film 4 can adopt vacuum coating, UV spraying, any mode of common plated film to be provided with.
The utility model plates the single or multiple lift anti-reflection film at the LGP incidence surface, improves the optical efficiency of going into of LGP, thereby improves the light utilization efficiency of LGP.Plate anti-reflection film and can reduce catoptrical intensity, thereby increase the transmission light intensity.Anti-reflection film is the principle of interference according to optics, plate the quarter-wave material that a layer thickness is certain a shade light wave in the visible light at the LGP incidence surface, the coloured light of this wavelength that reflects back in the both sides of this tunic will interfere so, thereby cancel out each other, it is minimum that LGP is reduced to the reflection of the coloured light of this wavelength, goes into optical efficiency thereby improve.Obviously, a skim only works to a kind of coloured light, and multicoating then can work to multiple coloured light.Multicoating adopts different materials repeatedly to plate the rete of different-thickness at lens surface usually.Multicoating can improve the light transmittance of LGP greatly.As shown in Figure 4, single layer anti reflective coating can make reflection be reduced to 1.5%, and the multilayer anti-reflection film then can allow reflection be reduced to 0.25%.The development and the maturation of various coating techniques such as vacuum coating, UV spraying, common plated film, cost is also more and more lower.Each side factors such as consideration cost can be selected different anti-reflection film material and coating layers and corresponding coating process according to different needs.The utility model also proposes the television set that the LED-backlit module of one-sided light inlet can be used for.
Claims (6)
1. the LED-backlit module of an one-sided light inlet, comprise LGP (1), be located at this LGP one side LED lamp bar (2), be evenly arranged in white light LEDs on the lamp bar, be located at the reflector plate (3) on all the other sides of LGP (1), it is characterized in that the incidence surface of described LGP (1) is provided with one deck anti-reflection film (4) at least.
2. the LED-backlit module of one-sided light inlet as claimed in claim 1 is characterized in that, described anti-reflection film (4) is made by magnesium fluoride, silica, any material of titanium dioxide.
3. the LED-backlit module of one-sided light inlet as claimed in claim 2 is characterized in that, the thickness of described one deck anti-reflection film (4) is the quarter-wave of any light wave in seven kinds of coloured light of visible light.
4. the LED-backlit module of one-sided light inlet as claimed in claim 2 is characterized in that, described anti-reflection film (4) is a multilayer, by different-thickness with different materials is stacked constitutes.
5. the LED-backlit module of one-sided light inlet as claimed in claim 1 is characterized in that, the anti-reflection film (4) on described LGP (1) incidence surface is provided with for adopting vacuum coating, UV spraying, any mode of common plated film.
6. one kind comprises the television set as the LED-backlit module of one-sided light inlet as described in the claim 1 to 5.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206089590U CN201902897U (en) | 2010-11-16 | 2010-11-16 | Single-side light incidence LED (light-emitting diode) backlight module and television |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206089590U CN201902897U (en) | 2010-11-16 | 2010-11-16 | Single-side light incidence LED (light-emitting diode) backlight module and television |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201902897U true CN201902897U (en) | 2011-07-20 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010206089590U Expired - Fee Related CN201902897U (en) | 2010-11-16 | 2010-11-16 | Single-side light incidence LED (light-emitting diode) backlight module and television |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201902897U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108987382A (en) * | 2018-07-27 | 2018-12-11 | 京东方科技集团股份有限公司 | A kind of electroluminescent device and preparation method thereof |
| CN113513716A (en) * | 2021-07-28 | 2021-10-19 | 安徽高美福电子有限公司 | Prevent blue light guide plate desk lamp |
-
2010
- 2010-11-16 CN CN2010206089590U patent/CN201902897U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108987382A (en) * | 2018-07-27 | 2018-12-11 | 京东方科技集团股份有限公司 | A kind of electroluminescent device and preparation method thereof |
| CN113513716A (en) * | 2021-07-28 | 2021-10-19 | 安徽高美福电子有限公司 | Prevent blue light guide plate desk lamp |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110720 Termination date: 20131116 |