CN1959492A - Full run-down type backlight module - Google Patents
Full run-down type backlight module Download PDFInfo
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- CN1959492A CN1959492A CN 200510101017 CN200510101017A CN1959492A CN 1959492 A CN1959492 A CN 1959492A CN 200510101017 CN200510101017 CN 200510101017 CN 200510101017 A CN200510101017 A CN 200510101017A CN 1959492 A CN1959492 A CN 1959492A
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- backlight module
- type backlight
- direct type
- light
- leaded light
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Abstract
A back light module of straight down type is prepared as setting diffusion plate to be opposite to base, setting a numbers of light guide supports between base and diffusion plate and using them to support diffusion plate, arranging light incoming surface at surface near to base on said supports, using said light incoming surface to limit out a groove or forming V form surfaces being set with semitansmission -semireflection film, setting a numbers of light sources in said groove for using them to shoot light to V form surfaces via light incoming surface then refracting light to diffusion plate by side surfaces of V form surfaces.
Description
[technical field]
The present invention relates to a kind of luminous evenly and the direct type backlight module of slimming.
[background technology]
LCD is a kind of non-self-emission display apparatus, it shows mainly passing through or the obstructed realization of coming by control light beam that external light source sends, therefore need external light source and corresponding guiding device usually, as backlight module, this backlight module can be with the beam direction display panel that external light source sent.
Owing to the innovation of the weight of display device and volume is to reach by effective flattening of display, wherein backlight module is just being played the part of the key player who effectively utilizes light source.Under the prerequisite of display volume flattening, how to utilize the characteristic of light, make each zone of backlight module that enough and uniform brightness all be arranged, be the improved emphasis direction of backlight modular structure.
A kind of direct type backlight module of prior art as shown in Figure 1, this direct type backlight module 10 comprises a box body 14, some light sources 13, some supporters 12 and diffuser plate 11.These some light sources 13 are positioned at the bottom surface of this box body 14 side by side, and the bottom surface of box body 14 can be provided with reflectance coating (figure does not show), this diffuser plate 11 is arranged at the opening part of this box body 14, and some supporters 12 are used to support this diffuser plate 11 between the bottom surface and diffuser plate 11 of this box body 14.
The light emission rate of reflectance coating to provide light source 13 to make progress of box body 14 bottom surfaces only is provided the direct type backlight module 10 of prior art, but make display panels relative light source 13 directly over the direct bright dipping of light and make brightness brighter, and the brightness in zone is darker between two light sources, cause planar light source the problem of uneven luminance to occur, and then the image brilliance that makes LCD present is inhomogeneous.Owing to need to keep a segment distance between diffuser plate 11 and the light source 13, just can make diffuser plate 11 present default light diffusion effect, make the evenly effect of diffusion of light if cross near then can't reaching with light source 13, therefore, the problem that this direct type backlight module 10 exists thickness to reduce.In addition, because light source 13 quantity are more, thermal value is higher, and this backlight module 10 does not have auxiliary radiator structure, and therefore having thermal diffusivity is not good problem.
[summary of the invention]
In view of this, be necessary to provide a kind of luminous evenly and the direct type backlight module of slimming.
A kind of direct type backlight module comprises a substrate; One diffuser plate, this substrate is provided with relatively; Some leaded light supporters, be arranged between this substrate and this diffuser plate and be used to support diffuser plate, these some leaded light supporters are provided with incidence surface near the one side of substrate, this incidence surface limits a groove, the two side portions that this leaded light supporter is positioned at incidence surface is two flank section, and the side of these two flank section forms one first angle with this substrate respectively, and the end face of these two flank section is a V-arrangement face, this V-arrangement mask has one second angle, and this V-arrangement face is provided with the semi-penetration semi-reflective film; Some light sources are arranged in the groove of leaded light supporter, and the light that this light source sends is through incidence surface directive V-arrangement face, and this V-arrangement face will throw the side that thereon most of light reflexes to flank section, and refract to diffuser plate through this side.
Compared to prior art, described direct type backlight module is provided with the leaded light supporter, and the exiting surface of leaded light supporter is provided with the setting of reflectance coating and first angle and second corner dimension, the transmitance that light sees through the V-arrangement face will be reduced, increase the brightness in zone between two adjacent leaded light supporters, and brightness is more even.So the backlight module luminosity of this kind structure is higher and more even, and the diffuser plate of backlight module and the spacing between the light source dwindle, and realizes the slimming of backlight module.
[description of drawings]
Fig. 1 is the sectional view of the backlight module of prior art.
Fig. 2 is the sectional view of direct type backlight module of the present invention.
Fig. 3 is the stereographic map of the leaded light supporter of direct type backlight module of the present invention.
Fig. 4 is the sectional view that the present invention has the direct type backlight module of heat abstractor.
[embodiment]
Below in conjunction with accompanying drawing the present invention is described in further detail.
See also Fig. 2 and Fig. 3, Fig. 2 is the sectional view of direct type backlight module of the present invention, and Fig. 3 is the stereographic map of the leaded light supporter of direct type backlight module of the present invention.This backlight module 20 comprises 1, three light source of three leaded light supporters, 2, one box bodys 3 and a diffuser plate 4.
This box body 3 comprises a plurality of sidewalls 32 that a substrate 31 and an end link to each other with substrate 31, and the other end of these a plurality of sidewalls 32 forms an opening.These substrate 31 surfaces can be reflecting surface, also reflector plate or reflecting plate can be set, and the inboard of these a plurality of sidewalls 32 can be reflecting surface, also reflector plate or reflecting plate can be set.
This diffuser plate 4 is arranged at the opening part of box body 3.
These three leaded light supporters 1 are arranged between the substrate 31 and diffuser plate 4 of box body 3, are used to support diffuser plate 4.This leaded light supporter 1 has an incidence surface 51 near on the bottom surface 7 of substrate 31, this incidence surface 51 surrounds a groove 5, the surface of the leaded light supporter 1 at place, groove 5 two ends is its leading flank 15 and trailing flank 16, for preventing that light scatters and disappears from leading flank 15 and trailing flank 16, so be provided with reflectance coating (figure does not show) with trailing flank 16 in the leading flank 15 of leaded light supporter 1.The surface that links to each other with bottom surface 7, leading flank 15 and the trailing flank 16 of leaded light supporter 1 is the side 61 of leaded light supporter 1, the two side portions that this leaded light supporter 1 is positioned at incidence surface 51 is two flank section 6, the side 61 of these two flank section 6 forms the first angle α with the substrate of this box body 3 31, the end face of these two flank section 6 is a V-arrangement face 60, this V-arrangement mask has the second angle β, this V-arrangement face 60 is provided with semi-penetration semi-reflective film 62, and the material of this semi-penetration semi-reflective film 62 is generally aluminium, gold or silver etc.The thickness of these two flank section 6 successively decreases to its top from incidence surface 51.Wherein, the first angle α is preferably 70 degree, the second angle β is preferably 85 degree, the material of leaded light supporter 1 is polymethylmethacrylate or polycarbonate, for making optical effect reach better, can further add the potpourri of a certain proportion of silicon dioxide, titania or silicon dioxide and titania.
The opening part of box body 3 is provided with diffuser plate 4, light makes the emergent ray of whole backlight module 20 more even after spreading via diffuser plate 4, because this diffuser plate 4 is supported by leaded light supporter 1, so this backlight module 20 is when being subjected to bigger vibration, diffuser plate 4 is difficult for bending, buckling deformation and breakage etc.The upper surface of diffuser plate 4 is provided with optical thin film 41, and this optical thin film 41 is brightness enhancement film or diffusion barrier, makes light that backlight module 20 sends perpendicular to diffuser plate outgoing and homogenising more.
Reflectivity for the V-arrangement face 60 that strengthens leaded light supporter 1, also can further plate dielectric optical thin film on the semi-penetration semi-reflective film 62 of V-arrangement face 60, its material is generally oriented polypropylene (OPP), polyethylene terephthalate (PET) or Polyvinylchloride (PVC) etc.
Space set O shape ring on light source 2, leaded light supporter 1 cooperates with light source 2 by this O shape ring, because of O shape ring has the function of antivibration, therefore has the certain protection effect for light source 2 and leaded light supporter 1, and light source 2 is played a supportive role.
The backlight module 20 of present embodiment is provided with three leaded light supporters 1 and respective sources 2, according to the size of display and to the luminosity of backlight module and the requirement of uniformity coefficient, some leaded light supporters 1 and light source 2 can be set, and the light source 2 of present embodiment can adopt cold cathode fluorescent lamp.By volume and the inhomogeneity requirement of light, can also can adjust to the first angle α adjusting in less than 96 degree scopes smaller or equal to 90 degree, the second angle β to the length of two flank section 6 to backlight module 20.
Compared with prior art, described direct type backlight module 20 is because of being provided with leaded light supporter 1 in its box body 3, and the V-arrangement face 60 of leaded light supporter 1 is provided with the size setting of semi-penetration semi-reflective film 62 and the first angle α and the second angle β, to reduce the transmitance that light sees through V-arrangement face 60, increase the brightness in zone between two adjacent leaded light supporters 1.So backlight module 20 luminosity of this kind structure are higher and more even, and the diffuser plate 4 of backlight module 20 and the spacing between the light source 2 are dwindled the slimming of realization backlight module 20.
See also Fig. 4, Fig. 4 is the sectional view that the present invention has the direct type backlight module of heat abstractor.This backlight module 80 comprises leaded light supporter 81, light source 82, box body 83, diffuser plate 86 and heat abstractor 84, and wherein this leaded light supporter 81 is identical with above-mentioned leaded light supporter 1 structure.These box body 83 bottoms are provided with some openings, and this number of openings is corresponding with the quantity of leaded light supporter 81.Heat abstractor 84 is a sheet metal, has several projections platform 85 on this sheet metal, the size of its raised platform 85 is corresponding with the openings of sizes and the quantity of box body bottom with quantity, and heat abstractor 84 and box body 83 are fitted together, and raised platform 85 is matched with the opening of box body 83.Light source 82 is positioned on the raised platform 85 of heat abstractor 84 with leaded light supporter 81, and the heat of light source 82 luminous generations and the heat of leaded light supporter 81 conduct on the heat abstractor 84 by the raised platform 85 of heat abstractor 84, again by heat abstractor 84 heat radiations.Therefore, the thermal diffusivity of this backlight module 80 is better, can avoid light source 82 not go out impaired phenomenon because of heat conduction.
In addition, those skilled in the art can also do other variation in spirit of the present invention, and certainly, the variation that these are done according to spirit of the present invention all should be included in the present invention's scope required for protection.
Claims (15)
1. direct type backlight module, it comprises:
One substrate;
One diffuser plate, this substrate is provided with relatively;
Some leaded light supporters, be arranged between this substrate and this diffuser plate and be used to support diffuser plate, these some leaded light supporters are provided with incidence surface near the one side of substrate, this incidence surface limits a groove, the two side portions that this leaded light supporter is positioned at incidence surface is two flank section, and the side of these two flank section forms one first angle with this substrate respectively, and the end face of these two flank section is a V-arrangement face, this V-arrangement mask has one second angle, and this V-arrangement face is provided with the semi-penetration semi-reflective film; With
Some light sources are arranged in the groove of leaded light supporter, and the light that this light source sends is through incidence surface directive V-arrangement face, and this V-arrangement face will throw the side that thereon most of light reflexes to flank section, and refract to diffuser plate through this side.
2. direct type backlight module as claimed in claim 1 is characterized in that: the material of this leaded light supporter is polymethylmethacrylate or polycarbonate.
3. direct type backlight module as claimed in claim 2 is characterized in that: this leaded light support body material can further add the potpourri of silicon dioxide, titania or silicon dioxide and titania.
4. direct type backlight module as claimed in claim 1 is characterized in that: this semi-penetration semi-reflective membrane material is aluminium, gold or silver-colored.
5. direct type backlight module as claimed in claim 1 is characterized in that: further be provided with dielectric optical thin film on this semi-penetration semi-reflective film.
6. direct type backlight module as claimed in claim 5 is characterized in that: the material of this dielectric optical thin film is oriented polypropylene, polyethylene terephthalate or Polyvinylchloride.
7. direct type backlight module as claimed in claim 1 is characterized in that: this first angle is smaller or equal to 90 degree.
8. direct type backlight module as claimed in claim 1 is characterized in that: this second angle is less than 96 degree.
9. direct type backlight module as claimed in claim 1, it further comprises a plurality of sidewalls, this substrate and these a plurality of sidewalls form the box body of an opening.
10. direct type backlight module as claimed in claim 9 is characterized in that: these a plurality of inside sidewalls are reflecting surface, or are provided with reflector plate or reflecting plate.
11. direct type backlight module as claimed in claim 1 is characterized in that: this substrate surface is a reflecting surface, or is provided with reflector plate or reflecting plate.
12. direct type backlight module as claimed in claim 1 is characterized in that: spacer sleeve is provided with O shape ring on this light source.
13. direct type backlight module as claimed in claim 1 is characterized in that: this diffuser plate is provided with brightness enhancement film or diffusion barrier away from the surface of leaded light supporter.
14. direct type backlight module as claimed in claim 1 is characterized in that: the bottom of this backlight module is provided with heat abstractor.
15. direct type backlight module as claimed in claim 14 is characterized in that: this heat abstractor has the several projections platform, offers corresponding opening with it in this substrate, and the several projections platform cooperates one by one with this opening.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005101010177A CN100492119C (en) | 2005-11-04 | 2005-11-04 | Direct type backlight module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005101010177A CN100492119C (en) | 2005-11-04 | 2005-11-04 | Direct type backlight module |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1959492A true CN1959492A (en) | 2007-05-09 |
| CN100492119C CN100492119C (en) | 2009-05-27 |
Family
ID=38071259
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2005101010177A Expired - Fee Related CN100492119C (en) | 2005-11-04 | 2005-11-04 | Direct type backlight module |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100492119C (en) |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103939849A (en) * | 2013-01-23 | 2014-07-23 | Lg电子株式会社 | Apparatus for planar lighting |
| CN104849907A (en) * | 2014-02-18 | 2015-08-19 | 冠捷投资有限公司 | Light diffuser plate supporting nail and backlight module set |
| WO2016150009A1 (en) * | 2015-03-24 | 2016-09-29 | 深圳市华星光电技术有限公司 | Backlight module and liquid crystal display having backlight module |
| CN108490685A (en) * | 2018-03-20 | 2018-09-04 | 惠州市华星光电技术有限公司 | Backlight module and display device |
| CN109163227A (en) * | 2018-08-31 | 2019-01-08 | 惠州市华星光电技术有限公司 | Down straight aphototropism mode set and light emitting diode matrix |
| CN109343192A (en) * | 2018-12-19 | 2019-02-15 | 惠州市华星光电技术有限公司 | Backlight module |
| CN109613757A (en) * | 2019-01-29 | 2019-04-12 | 惠州市华星光电技术有限公司 | Backlight module |
| CN109633980A (en) * | 2019-02-01 | 2019-04-16 | 惠州市华星光电技术有限公司 | Backlight module and liquid crystal display die set |
| CN110111693A (en) * | 2019-05-08 | 2019-08-09 | 惠州市华星光电技术有限公司 | Backlight module and display device |
| US10683992B2 (en) | 2018-08-31 | 2020-06-16 | Huizhou China Star Optoelectronics Technology Co., Ltd. | Direct-type backlight module and LED array |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101788119B (en) * | 2010-03-18 | 2011-08-17 | 友达光电股份有限公司 | Backlight module |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6974229B2 (en) * | 2003-05-21 | 2005-12-13 | Lumileds Lighting U.S., Llc | Devices for creating brightness profiles |
| CN100361007C (en) * | 2003-05-21 | 2008-01-09 | 友达光电股份有限公司 | Backlight module and liquid crystal display device |
| US6974221B2 (en) * | 2003-12-30 | 2005-12-13 | Au Optronics Corporation | Support for backlight module |
-
2005
- 2005-11-04 CN CNB2005101010177A patent/CN100492119C/en not_active Expired - Fee Related
Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103939849B (en) * | 2013-01-23 | 2017-04-12 | Lg电子株式会社 | Apparatus for planar lighting |
| CN103939849A (en) * | 2013-01-23 | 2014-07-23 | Lg电子株式会社 | Apparatus for planar lighting |
| CN104849907A (en) * | 2014-02-18 | 2015-08-19 | 冠捷投资有限公司 | Light diffuser plate supporting nail and backlight module set |
| WO2016150009A1 (en) * | 2015-03-24 | 2016-09-29 | 深圳市华星光电技术有限公司 | Backlight module and liquid crystal display having backlight module |
| CN108490685A (en) * | 2018-03-20 | 2018-09-04 | 惠州市华星光电技术有限公司 | Backlight module and display device |
| CN108490685B (en) * | 2018-03-20 | 2020-11-27 | 惠州市华星光电技术有限公司 | Backlight module and display device |
| WO2020042220A1 (en) * | 2018-08-31 | 2020-03-05 | 惠州市华星光电技术有限公司 | Direct type backlight module and light emitting diode array |
| CN109163227A (en) * | 2018-08-31 | 2019-01-08 | 惠州市华星光电技术有限公司 | Down straight aphototropism mode set and light emitting diode matrix |
| US10683992B2 (en) | 2018-08-31 | 2020-06-16 | Huizhou China Star Optoelectronics Technology Co., Ltd. | Direct-type backlight module and LED array |
| CN109343192A (en) * | 2018-12-19 | 2019-02-15 | 惠州市华星光电技术有限公司 | Backlight module |
| WO2020155391A1 (en) * | 2019-01-29 | 2020-08-06 | 惠州市华星光电技术有限公司 | Backlight module and display apparatus |
| CN109613757A (en) * | 2019-01-29 | 2019-04-12 | 惠州市华星光电技术有限公司 | Backlight module |
| CN109633980A (en) * | 2019-02-01 | 2019-04-16 | 惠州市华星光电技术有限公司 | Backlight module and liquid crystal display die set |
| CN110111693A (en) * | 2019-05-08 | 2019-08-09 | 惠州市华星光电技术有限公司 | Backlight module and display device |
| US11306893B2 (en) | 2019-05-08 | 2022-04-19 | Huizhou China Star Optoelectronics Technology Co., Ltd. | Display device backlight module with lenses having supporting portions for diffuser board |
Also Published As
| Publication number | Publication date |
|---|---|
| CN100492119C (en) | 2009-05-27 |
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Granted publication date: 20090527 Termination date: 20141104 |
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