CN1313874C - LED back light module - Google Patents
LED back light module Download PDFInfo
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- CN1313874C CN1313874C CNB2004100546820A CN200410054682A CN1313874C CN 1313874 C CN1313874 C CN 1313874C CN B2004100546820 A CNB2004100546820 A CN B2004100546820A CN 200410054682 A CN200410054682 A CN 200410054682A CN 1313874 C CN1313874 C CN 1313874C
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- led
- backlit module
- diffuser plate
- auxiliary diffuser
- light
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Abstract
The present invention relates to an LED back light module which comprises a bottom board, a plurality of LEDs, a reflecting slice, an auxiliary diffusing board and a diffusing slice, wherein the LEDs are arranged on the bottom board, and the auxiliary diffusing board is arranged above the LEDs; the surface of the auxiliary diffusing board has a plurality of optical micro-structures, and the diffusing slice is arranged above the auxiliary diffusing board with preset height. Light rays generated by the LEDs can generate total reflection on the auxiliary diffusing board and the diffusing slice for fully mixing light in the LED back light module, and the light rays leave away from the LED back light module from the upper surface of the diffusing slice. The optical micro-structures on the surface of the auxiliary diffusing board are used for guiding the light rays to the diffusing slice.
Description
Technical field
The present invention particularly about a kind of LED-backlit module with auxiliary diffuser plate, reaches auxiliary diffuser plate wherein about a kind of LED (Light emitting diode) backlight module.
Background technology
LED (Light Emitting Diode, light emitting diode) light source will have breakthrough help to liquid crystal display product, main cause is that the luminous efficacy of LED has obtained significantly to improve, it is generally acknowledged the LED of present stage, technical possessed the usefulness of cold cathode fluorescent lamp about half, even to the luminous efficacy of LED in 2005 be expected to run neck and neck with cold cathode fluorescent lamp, certainly, this only is with regard to the brightness aspect of LED.If the characteristic of the high reaction velocity of LED is used, red, blue, green three kinds of led light sources are switched at a high speed in regular turn light a lamp, then not only can replace the colored filter of high unit price in the liquid crystal panel, more can increase the sophistication and the brightness of liquid crystal display product.In view of this, led light source will be comprehensively and completely to the influence of liquid crystal display product future development trend.And except being applied to liquid crystal display product, in case the luminous efficacy of LED can be equal to (or surpassing) cold cathode fluorescent lamp, then its application certainly will will more be expanded, for example, the LED lamp has been applied on many signal lamps source at present, such as the traffic lights of traffic sign and the indicator of almost car etc., if its luminous efficacy makes progress to some extent, most possible application is that it is expanded to the illuminating lamp source, and low power consumption that LED had and low heat generation characteristic will bring no small threat to present all illuminating lamp sources.
Please refer to Fig. 1, Fig. 1 is known LED-backlit module side cross section view.LED-backlit module 10 comprises a framework 12, a plurality of LED14, a reflector plate 16 and a diffusion sheet 18.LED-backlit module 10 shown in Figure 1 is because LED14 wherein places the bottom, and be the exiting surface of LED-backlit module 10 with the upper surface of diffusion sheet 18 of its top, provide light to give liquid crystal panel by this, therefore be commonly referred to straight-down negative (direct-type) backlight module.
Wherein, a plurality of LED14 are arranged on the base plate of framework 12, with as the light source among the LED-backlit module 10.As shown in Figure 1, LED14 can divide into the luminous zone 141 of the first half and the base 143 of Lower Half.
16 of reflector plates can reflect the light from the luminous zone 141 of LED14 upward, and light can be used fully.Reflector plate 16 utilizes its marginal portion to be set up on the framework 12, and wherein and be provided with a plurality of LED hole, so that the luminous zone 141 of LED14 is passed and is positioned on the reflector plate 16; 143 of bases are below reflector plate 16, and base 143 can be in order to supporting reflex sheet 16 in the known technology of part.
The diffusion sheet 18 of printing opacity also utilizes its marginal portion to be set up on the framework 12, and different by diffusion sheet 18 material refractive indexes and air can make the light of part incident diffusion sheet 18 produce total reflection.As shown in Figure 1, light repeatedly reflects or total reflection between diffusion sheet 18 and reflector plate 16, can promote the mixed light effect of the light of all kinds that LED14 sends, make the colourity of light and brightness more even after, the upper surface by diffusion sheet 18 leaves LED-backlit module 10 again.
Generally speaking, require emphasis the especially reason of mixed light effect of light of all kinds of LED-backlit module 10 is to be: individual other LED14 can produce the light of different colours such as red, green, blue, but LED-backlit module 10 provides the light that gives liquid crystal panel to need uniform colourity and brightness, otherwise the unfavorable factor can become follow-up liquid crystal panel imaging the time.Therefore, in LED-backlit module 10, need good light mixing mechanism, make the light that penetrates LED-backlit module 10 have uniform brightness and colourity.
It should be noted that, because LED14 is lateral emitting (side emitting), therefore no matter be Fig. 1 backlight module 10 light major part that wherein LED14 produced can't be directly upward exiting surface emission, but launch light to the direction of LED14 side, and after repeatedly reflecting (or total reflection) between reflector plate 16 and the diffusion sheet 18, when the incident angle of the light of incident diffusion sheet 18 during greater than the critical angle (critical angle) of total reflection, light just penetrates LED-backlit module 10.Please refer to Fig. 2, Fig. 2 shows the angular range that the LED luminous intensity is stronger.(as arrow a), being the strongest position of LED14 luminosity, in angle of its positive and negative 20 degree, then is the main light emitting region of LED14 with light path about Fig. 2 normal L angle 80 degree.Scheme as can be known thus, the major part that LED produces light is towards its lateral emitting really.
According to the explanation of above-mentioned known technology as can be known, need to have good light mixing mechanism among the LED-backlit module, so that the light that the LED-backlit module provides has uniform colourity and brightness.Yet the light mixing mechanism that known LED-backlit module is as shown in Figure 1 provided still has the improved space of needs.In addition, when the better light mixing mechanism of LED-backlit module is provided, still need consider the characteristic of LED lateral emitting, to avoid when reaching good mixed light effect, having sacrificed the luminescence efficiency of LED-backlit module whole on the contrary.
Still lack a kind of LED-backlit module that can take into account luminescence efficiency and mixed light effect in the known technology, to improve the not all roses shortcoming of mixed light effect in the known technology.And the new technology developed of expectation not only can have significant lifting on the mixed light effect, and can be fast and incorporate easily among the existing LED-backlit module processing procedure, is beneficial to the competitive power of industry in cost and other each side.
Therefore, for the research staff who is engaged in LED-backlit module association area, there's no one who doesn't or isn't be devoted to solve the shortcoming that known technology still has, in the hope of can further improving the quality of LED-backlit module product.
Summary of the invention
The main technical problem to be solved in the present invention is: a kind of LED-backlit module that can take into account luminescence efficiency and mixed light effect is provided.
Another technical matters that the present invention will solve is: a kind of LED-backlit module is provided, and can be fast and incorporate easily among the existing LED-backlit module processing procedure.
For this reason, technical solution of the present invention is: a kind of LED-backlit module comprises a base plate; A plurality of LED are arranged on this base plate; One auxiliary diffuser plate is arranged at above-mentioned LED top, and this auxiliary diffuser plate surface has a plurality of optical microstructures; And a diffusion sheet, being arranged at this auxiliary diffuser plate top with a predetermined altitude, this LED-backlit module is an exiting surface with the upper surface of this diffusion sheet.
Characteristics of the present invention and advantage are: LED-backlit module provided by the invention comprises a base plate, a plurality of LED, a reflector plate, a diffusion sheet and an auxiliary diffuser plate.Base plate belongs to the some of the framework of LED-backlit module.Framework can carry described LED, reflector plate, diffusion sheet and the auxiliary diffuser plate in the LED-backlit module.
A plurality of LED are arranged on the chassis base, and each LED comprises a luminous zone and a base.Individual other LED can produce three kinds of coloured light of red, green, blue.
Reflector plate is erected on the framework, and it has a plurality of LED hole, can be sleeved on the outside of LED, so that the luminous zone of LED is positioned on this reflector plate, and the base of LED is positioned under the reflector plate, and the carrying reflector plate.
Auxiliary diffuser plate is erected on the framework, and is arranged at the LED top; The auxiliary diffuser plate surface has a plurality of optical microstructures.Diffusion sheet is erected on the framework, and is arranged at above the auxiliary diffuser plate with a predetermined altitude, and the LED-backlit module is an exiting surface with the upper surface of diffusion sheet.
Wherein, diffusion sheet and auxiliary diffuser plate light-permeable.And be different from the result of air refraction by diffusion sheet and auxiliary diffuser plate material refractive index, the light that described LED produced can be by producing total reflection in auxiliary diffuser plate and diffusion sheet surface, and in the generation reflection of reflector plate surface, and in the LED-backlit module mixed light fully, and leave the LED-backlit module by above-mentioned exiting surface.And the described optical microstructures on auxiliary diffuser plate surface wherein, in order to the light with the LED-backlit inside modules the lead diffusion sheet and the above-mentioned exiting surface of its top.
The invention provides a kind of LED-backlit module of taking into account luminescence efficiency and mixed light effect.The present invention not only provides a kind of LED-backlit module that has diffusion sheet and auxiliary diffuser plate simultaneously, and has good mixed light effect, and by the improvement to auxiliary diffuser plate, has improved the unclear shortcoming of this kind LED-backlit module luminescence efficiency in the known technology.And the new technology that the present invention developed has splendid convenience on making, can be fast and incorporate easily among the existing LED-backlit module processing procedure.Simultaneously, auxiliary diffuser plate of the present invention has more brought the effect that the LED-backlit module improves its briliancy.In this case, the present invention not only meets industry cost and considering of making, and has significant progress, and favourable lifting industrial competitiveness.
Description of drawings
Fig. 1 is known LED-backlit module side cross section view;
Fig. 2 shows the angular range that the LED luminous intensity is stronger;
Fig. 3 is a LED-backlit module side cross section view of the present invention;
Fig. 4 is another embodiment of the present invention side cross section view;
Fig. 5 is another embodiment of the present invention side cross section view; And
Fig. 6 is the auxiliary diffuser plate stereographic map of displayed map 5 then.
The drawing reference numeral explanation:
10,20,40,50,60, LED- backlit module 12,42, framework
14,44, LED 141,441, luminous zone 143,443, base
16,46, reflector plate 18,48, diffusion sheet 421, base plate
461, LED hole 52, auxiliary diffuser plate a, a ', arrow
521,521a, 521b, optical microstructures L, normal 523, direct reflection sheet
Embodiment
By following detailed description also in conjunction with the accompanying drawings, can understand the plurality of advantages of foregoing and the present invention easily.
Please refer to Fig. 3, Fig. 3 is a LED-backlit module side cross section view of the present invention.LED-backlit module 40 comprises a framework 42, wherein has a base plate 421, a plurality of LED44, a reflector plate 46, a diffusion sheet 48 and an auxiliary diffuser plate 52.
A plurality of LED44 are arranged on the base plate 421, and each LED44 comprises a luminous zone 441 and a base 443.Single LED44 can produce three kinds of coloured light of red, green, blue.
It should be noted that above reflector plate 46, and be provided with auxiliary diffuser plate 52 provided by the present invention, it is erected on the framework 42, and is arranged at the LED44 top; Auxiliary diffuser plate 52 surfaces have a plurality of optical microstructures 521.As shown in Figure 3, in an embodiment of the present invention, above-mentioned optical microstructures 521 is formed at auxiliary diffuser plate 52 upper surfaces.
According to LED-backlit module 40 of the present invention shown in Figure 3, wherein, diffusion sheet 48 and auxiliary diffuser plate 52 light-permeables.And be different from the result of air refraction by the refractive index of diffusion sheet 48 and auxiliary diffuser plate 52 materials, the light that described LED44 produced can be by the total reflection that produces on auxiliary diffuser plate 52 and diffusion sheet 48 surfaces, and the reflection that produces on reflector plate 46 surfaces, and in LED-backlit module 40 mixed light fully, and leave LED-backlit module 40 by above-mentioned exiting surface (diffusion sheet 48 upper surfaces).And the described optical microstructures 521 on auxiliary diffuser plate 52 surfaces wherein, with so that the easy bright dipping of light of LED-backlit module 40 inside and be directed to diffusion sheet 48 and above-mentioned exiting surface above it, as shown in Figure 3, light (a) can change its light path as arrow at the optical microstructures 521 of auxiliary diffuser plate 52 upper surfaces, and the diffusion sheet 48 (as arrow a ') of directive top.
In the enforcement, can lay one deck reflectance coating (not shown) at the sidewall of framework 42 and the upper surface of reflector plate 46, the E60L silver reflectance coating produced of Toray company for example is to reduce the loss that light is produced in reflection process repeatedly.
In addition, further consider the optical homogeneity of LED-backlit module 40 integral body, then can be at the lower surface of auxiliary diffuser plate 52, and corresponding to the position directly over each LED44, form a direct reflection sheet (ESR dot, enhanced specular reflector) 523, in order to prevent the optical homogeneity of light destruction LED-backlit module 40 integral body that LED44 directly launches upward.
Because in the known LED-backlit module, exist the predicament that luminescence efficiency and mixed light effect can not be satisfactory to both parties, yet, wish to adopt LED-backlit module as shown in Figure 2 again, to satisfy the demand of the abundant mixed light of light at the liquid crystal display product of paying attention to light colourity and brightness uniformity.
Therefore, LED-backlit module 40 provided by the invention has auxiliary diffuser plate 52, and the described optical microstructures 521 on auxiliary diffuser plate 52 surfaces, can increase the surface area of auxiliary diffuser plate 52, increases the bright dipping chance; And by auxiliary diffuser plate 52 upper surfaces are formed described optical microstructures 521, but not the design of a tabular surface, can make light different when the incident angle of auxiliary diffuser plate 52 upper surfaces and tabular surface, be not easy to produce total reflection and easily bright dipping, by this with the lead diffusion sheet 48 of its top of the light with LED-backlit module 40 inside.
Owing to causing one of unclear reason of known LED-backlit module luminescence efficiency to belong to lateral emitting (side emitting) for LED, the light major part that it produced can't be directly upward exiting surface emission, and as shown in Figure 2, the main lighting angle of LED between with normal L angle 80 degree, and in the scopes of positive and negative 20 degree.
So, the present invention is at the described optical microstructures 521 on auxiliary diffuser plate 52 surfaces, can help the LED44 lateral emitting light, and partly between auxiliary diffuser plate 52 and reflector plate 46, come its light path of light correction of back reflective (or total reflection), and be directed to diffusion sheet 48.Can make auxiliary diffuser plate 52 can promote whole colourity and luminance uniformity by this, but be unlikely making the luminescence efficiency of LED-backlit module low.
On the implementation, the material of auxiliary diffuser plate 52 can be selected from acryl material (PMMA), polycarbonate material (PC material) or cyclic olefin polymerization material (COPs, Zeonor), and about the formation of described optical microstructures 521, can on the mould of making auxiliary diffuser plate 52, be provided with and optical microstructures 521 corresponding structures in advance, so that optical microstructures 521 is made in the injection molding manufacture procedure of auxiliary diffuser plate 52 one-body moldedly.
In another embodiment, optical microstructures 521 can be the V-cut structure, utilize the V-cut scraper then can be at original smooth acryl material (PMMA), polycarbonate material (PC material) or cyclic olefin polymerization material (COPs, Zeonor) surface forms required optical microstructures 521, to produce auxiliary diffuser plate 52 of the present invention.In this case, auxiliary diffuser plate provided by the present invention has splendid convenience on making.
What deserves to be mentioned is that V-cut structure Design and distribution density must be considered bright dipping situation actual backlight, and can be used for filling up the dark space and increase integral brightness.With one embodiment of the invention, the distance of adjacent two V-cut can be between 1-300 μ m in the V-cut structure; And, whether visual actual LED-backlit module 40 exiting surfaces have the dark space to produce, then the spacing distance of the pairing V-cut structure in position, dark space can be set at and lack (the V-cut density of texture is higher), increasing the brightness of this dark space, and then improve the bright dipping inequality that causes the dark space.And the height of indivedual V-cut structures can be tens of μ m.
Except the premises is being implemented of the present invention the considering, when LED-backlit module 40 of the present invention is applied to liquid crystal display product, can on diffusion sheet 48, utilize known various blooming piece to promote whole optical appearance, for example upper and lower prismatic lens, upper and lower diffusion sheet ... Deng.
Please refer to Fig. 4, Fig. 4 is another embodiment of the present invention side cross section view.Except embodiment shown in Figure 3, the optical microstructures 521 among the present invention also can be arranged at the lower surface of auxiliary diffuser plate 52 as shown in Figure 4.With regard to the quality that light is provided, Fig. 4 LED-backlit module 50 is very close with the difference of Fig. 3 LED-backlit module 40.
Fig. 5 then shows another embodiment of the present invention side cross section view.In LED-backlit module 60, optical microstructures 521a is arranged at the upper surface of auxiliary diffuser plate 52, and optical microstructures 521b is arranged at the lower surface of auxiliary diffuser plate 52.
Fig. 6 is auxiliary diffuser plate 52 stereographic maps of displayed map 5 then, and wherein, optical microstructures 521a and optical microstructures 521b are provided with in mutually perpendicular mode.With the V-cut structure is example, then can utilize the V-cut scraper to form the V-cut structure in auxiliary diffuser plate 52 upper and lower surfaces respectively with mutually perpendicular direction, to realize auxiliary diffuser plate shown in Figure 6 52.The benefit of this kind embodiment is: the LED-backlit module light harvesting effect that optical microstructures caused, will not only evenly distribute in fine and closely woven parallel line mode, and evenly distribute and be able to the site mode that array arranges.
Comprehensive the above, the invention provides a kind of LED-backlit module that can take into account luminescence efficiency and mixed light effect, the present invention not only provides a kind of LED-backlit module that has diffusion sheet and auxiliary diffuser plate simultaneously, and has good mixed light effect, and, avoid when promoting the mixed light effect, having sacrificed the luminescence efficiency of LED-backlit module by the optical microstructures of auxiliary diffuser plate.And the new technology that the present invention developed has splendid convenience on making, can be fast and incorporate easily among the existing LED-backlit module processing procedure.Simultaneously, auxiliary diffuser plate of the present invention has more brought the effect that the LED-backlit module improves its briliancy, and optical microstructures wherein and the dark space that can adjust distribution density and then improve LED-backlit module exiting surface promote outgoing light homogeneity.
Though the present invention discloses with specific embodiment; but it is not in order to limit the present invention; any those skilled in the art; the displacement of the equivalent assemblies of under the prerequisite that does not break away from design of the present invention and scope, having done; or, all should still belong to the category that this patent is contained according to equivalent variations and modification that scope of patent protection of the present invention is done.
Claims (10)
1. a LED-backlit module is characterized in that, described LED-backlit module comprises:
One base plate;
A plurality of LED are arranged on this base plate;
One auxiliary diffuser plate is arranged at above-mentioned LED top, and this auxiliary diffuser plate surface has a plurality of optical microstructures; And
One diffusion sheet is arranged at this auxiliary diffuser plate top with a predetermined altitude, this LED-backlit module is an exiting surface with the upper surface of this diffusion sheet.
2. LED-backlit module as claimed in claim 1 is characterized in that, this auxiliary diffuser plate and this diffusion sheet this predetermined altitude apart is between 25mm～35mm.
3. LED-backlit module as claimed in claim 1 is characterized in that, described optical microstructures is formed at this auxiliary diffuser plate upper surface.
4. LED-backlit module as claimed in claim 1 is characterized in that, described optical microstructures is formed at this auxiliary diffuser plate lower surface.
5. LED-backlit module as claimed in claim 1 is characterized in that, described optical microstructures is formed at this auxiliary diffuser plate upper surface and lower surface.
6. LED-backlit module as claimed in claim 1 is characterized in that, described optical microstructures is the V-cut structure.
7. LED-backlit module as claimed in claim 5 is characterized in that, the described optical microstructures of this auxiliary diffuser plate upper surface is perpendicular to the described optical microstructures of this auxiliary diffuser plate lower surface.
8. LED-backlit module as claimed in claim 1 is characterized in that, the material of this auxiliary diffuser plate is selected from acryl material, polycarbonate material or cyclic olefin polymerization material.
9. LED-backlit module as claimed in claim 1, it is characterized in that, the light that described LED produced is by producing total reflection between this optical microstructures and this diffusion sheet surface, and in this LED-backlit module mixed light fully, and leave this LED-backlit module by this exiting surface.
10. LED-backlit module as claimed in claim 1, it is characterized in that, described LED-backlit module also has reflector plate, this reflector plate is erected on the framework, and LED hole with a plurality of LED of being sleeved on outside, so that the luminous zone of LED is positioned on this reflector plate, and the base of LED is positioned under the reflector plate, and the carrying reflector plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100546820A CN1313874C (en) | 2004-07-27 | 2004-07-27 | LED back light module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100546820A CN1313874C (en) | 2004-07-27 | 2004-07-27 | LED back light module |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1588201A CN1588201A (en) | 2005-03-02 |
| CN1313874C true CN1313874C (en) | 2007-05-02 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2004100546820A Expired - Fee Related CN1313874C (en) | 2004-07-27 | 2004-07-27 | LED back light module |
Country Status (1)
| Country | Link |
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| CN (1) | CN1313874C (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101354482B (en) * | 2007-07-23 | 2011-07-06 | 奇菱科技股份有限公司 | Light-mix machine and backlight module including the same |
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|---|---|---|---|---|
| KR100657284B1 (en) * | 2004-11-03 | 2006-12-14 | 삼성전자주식회사 | Back light unit and liquid display apparatus employing it |
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| CN100386681C (en) * | 2005-07-15 | 2008-05-07 | 财团法人工业技术研究院 | LED light-negative module |
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| JP5236521B2 (en) * | 2009-02-19 | 2013-07-17 | 株式会社ジャパンディスプレイイースト | Liquid crystal display |
| CN101907249B (en) * | 2009-06-08 | 2013-12-11 | 鸿富锦精密工业（深圳）有限公司 | Backlight module |
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| TWI497016B (en) * | 2011-11-23 | 2015-08-21 | Ind Tech Res Inst | Plane light source and flexible plane light source |
| CN103268038A (en) * | 2013-05-09 | 2013-08-28 | 京东方科技集团股份有限公司 | Reflective sheet, straight down type backlight module and display device |
| CN106773282A (en) * | 2016-11-25 | 2017-05-31 | 深圳市华星光电技术有限公司 | reflecting plate, backlight module and liquid crystal display |
| WO2018143039A1 (en) * | 2017-01-31 | 2018-08-09 | シャープ株式会社 | Lighting device and display device |
| CN107505769B (en) | 2017-08-15 | 2021-02-26 | 京东方科技集团股份有限公司 | Backlight structure and display device |
| CN110231736B (en) * | 2019-05-29 | 2020-10-16 | 惠州市华星光电技术有限公司 | Backlight structure and display panel |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5982092A (en) * | 1997-10-06 | 1999-11-09 | Chen; Hsing | Light Emitting Diode planar light source with blue light or ultraviolet ray-emitting luminescent crystal with optional UV filter |
| CN2350778Y (en) * | 1998-09-08 | 1999-11-24 | 台湾光宝电子股份有限公司 | Bright intensified backlight board |
| JP2000036209A (en) * | 1998-07-17 | 2000-02-02 | Matsushita Electric Ind Co Ltd | Linear light source and liquid crystal display device using the same |
| JP2003140110A (en) * | 2001-08-20 | 2003-05-14 | Hitachi Ltd | Liquid crystal display device and its drive circuit |
| CN1434335A (en) * | 2002-01-22 | 2003-08-06 | 诠兴开发科技股份有限公司 | Improvement method for arca source of LED |
| CN1504805A (en) * | 2002-12-05 | 2004-06-16 | 鸿富锦精密工业（深圳）有限公司 | Backlight module |
-
2004
- 2004-07-27 CN CNB2004100546820A patent/CN1313874C/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5982092A (en) * | 1997-10-06 | 1999-11-09 | Chen; Hsing | Light Emitting Diode planar light source with blue light or ultraviolet ray-emitting luminescent crystal with optional UV filter |
| JP2000036209A (en) * | 1998-07-17 | 2000-02-02 | Matsushita Electric Ind Co Ltd | Linear light source and liquid crystal display device using the same |
| CN2350778Y (en) * | 1998-09-08 | 1999-11-24 | 台湾光宝电子股份有限公司 | Bright intensified backlight board |
| JP2003140110A (en) * | 2001-08-20 | 2003-05-14 | Hitachi Ltd | Liquid crystal display device and its drive circuit |
| CN1434335A (en) * | 2002-01-22 | 2003-08-06 | 诠兴开发科技股份有限公司 | Improvement method for arca source of LED |
| CN1504805A (en) * | 2002-12-05 | 2004-06-16 | 鸿富锦精密工业（深圳）有限公司 | Backlight module |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101354482B (en) * | 2007-07-23 | 2011-07-06 | 奇菱科技股份有限公司 | Light-mix machine and backlight module including the same |
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|---|---|
| CN1588201A (en) | 2005-03-02 |
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