CN2908998Y - Area source device - Google Patents
Area source device Download PDFInfo
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- CN2908998Y CN2908998Y CNU2006200021102U CN200620002110U CN2908998Y CN 2908998 Y CN2908998 Y CN 2908998Y CN U2006200021102 U CNU2006200021102 U CN U2006200021102U CN 200620002110 U CN200620002110 U CN 200620002110U CN 2908998 Y CN2908998 Y CN 2908998Y
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- light source
- source device
- planar light
- diffusion barrier
- framework
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- Non-Portable Lighting Devices Or Systems Thereof (AREA)
- Liquid Crystal (AREA)
- Planar Illumination Modules (AREA)
Abstract
An area lights device for LCD monitor comprising of a frame with at least one opening and forming a holly area, a diffusion film being arranged on the cut of the frame, a reflecting film being arranged on the inner side of the frame. Not using the light guide panel or diffusion panel, the area lights device is light and thin, and has homogenous light effects. The device makes light diffuse homogenously, obtains its high diffusion characteristics, and eliminates the alternately dark and bright phenomenon by homogenization of light in frame 6, which depends on a reflecting film 2 and a diffusion film 3 with high diffusion and the principle of total reflection of light.
Description
Technical field
The utility model relates to a kind of light supply apparatus, relates in particular to a kind of planar light source device.
Background technology
Conventional planar light source device is to utilize light source to enter LGP or diffuser plate through reflectance coating, forms a uniform surface light source, again through the light harvesting effect of equal light action and the prismatic lens of diffusion barrier, with the brightness that improves light source with all spend together.
Generally speaking, planar light source device can be divided into two kinds of side type and straight-down negatives according to the position of fluorescent tube.Please referring to Fig. 1, it is a kind of side type planar light source device, mainly is to be assembled by assemblies such as light source 1, LGP 4, reflectance coating 2 and frameworks 6.Wherein, the substrate thickness of LGP 4 is about 0.4mm～10mm.The planar light source device of Fig. 1 is that light source is furnished in the LGP side, utilizes total reflection to transmit in LGP 4 after light source is entered by the side end face, and the utilization diffusion is named a person for a particular job light toward all angles diffusion and from the positive ejaculation of LGP again, forms a uniform surface light source.The planar light source device of Fig. 1 has the characteristic of light weight, slim, narrow frameization, low power consumption, is applicable to the backlight module of small-medium size, as notebook.But along with the large scale liquid crystal TV occurs, the emphasis of being considered is that then enough video picture brightness must be able to be arranged, the picture contrast and the standardized service life of watching visual angle, distinctness of broadness.
For reaching above-mentioned demand, so the straight-down negative planar light source device just becomes the technology main flow of the large-scale LCD TV of present collocation.Please referring to Fig. 2, it is a straight-down negative planar light source device, mainly is to be assembled by assemblies such as light source 1, diffuser plate 5, reflectance coating 2 and frameworks 6.The planar light source device of Fig. 2 is that light source is furnished under diffuser plate, and light source upwards penetrates in the front after diffuser plate 5 evenly disperses after reflecting by reflectance coating 2.In order to improve all degree together of light, its diffuser plate must have certain thickness, and general substrate thickness is about 2mm, so the light percent of pass of diffuser plate is about 60% only, makes light utilization efficiency low excessively.In order to improve the brightness of area source, needing increases fluorescent tube according to the panel size, so that accommodation space becomes is big, produces problems such as the weight, thickness, power consumption and the homogeneity that have increased module be bad and remains to be improved.
The utility model content
The present utility model people is through extensive research, and the reflectance coating of high diffusion and the planar light source device that the fabulous diffusion barrier of mist degree assembles are provided in creation.
Main purpose of the present utility model is to provide a kind of light that can allow be more evenly distributed, and meets lightweight, slimming, high brightness and market demands cheaply, can be in order to replace the planar light source device that tradition has LGP or diffuser plate.Planar light source device of the present utility model comprises: a framework has at least one opening, and wherein forms a hollow region; One diffusion barrier is the described opening of the described framework of configuration; One reflectance coating is equipped on described framework inboard; With at least one light source, be arranged in the described hollow region of described framework.
Description of drawings
Fig. 1 is the side type area source of a routine.
Fig. 2 is the straight-down negative area source of a routine.
Fig. 3 is an embodiment of the present utility model, and it is a kind of side type area source.
Fig. 4 is another embodiment of the present utility model, and it is a kind of straight-down negative area source.
Fig. 5 is the various kenels of the utility model reflectance coating.
Fig. 6 is the various kenels of the utility model diffusion barrier.
Fig. 7 is the various solid geometry shapes of the utility model framework.
The specific embodiment
Referring to Fig. 3, be a preferred embodiment of the present utility model please, described planar light source device comprises a framework 6, has hollow region 6a, has an opening 60 in the above; One diffusion barrier 3 is covered on the opening 60 of described framework 6, and described diffusion barrier 3 comprises a substrate 11, and at least one bread of described substrate 11 contains a high diffusion particle coating 8; One reflectance coating 2 is equipped on the inboard of described framework 6; With plural light source 1, be arranged at least one side in the described framework 6.
Referring to Fig. 4, be another preferred embodiment of the present utility model please, described planar light source device comprises a framework 6, has hollow region 6a, has an opening 60 in the above; One diffusion barrier 3, it embeds the opening 60 of described framework 6, and described diffusion barrier 3 comprises a substrate 11, and at least one bread of described substrate 11 contains a high diffusion particle coating 8; One reflectance coating 2 is equipped on the inboard of described framework 6; With plural light source 1, be arranged at the below of described framework 6.
Please, be used in framework 6 of the present utility model and can be any solid geometry shape referring to Fig. 7, for example tetrahedron 61, pentahedron 62, hexahedron 63, heptahedron 64, polyhedron 65, oval ball 66 etc., but be not limited to the above-mentioned solid geometry shape of enumerating.
Please referring to Fig. 6, diffusion barrier 3 of the present utility model is disposed on the opening 60 of described framework 6, for example covers or embed the opening 60 of described framework 6.Diffusion barrier 3 comprises a substrate 11, and at least one bread of described substrate 11 contains a high diffusion particle coating 8.Be used in diffusion barrier 3 of the present utility model and can be the diffusion barrier 31 of the high diffusion of incidence surface, the diffusion barrier 32 of the high diffusion of exiting surface or the diffusion barrier 33 of two-sided high diffusion, wherein the diffusion barrier 31 with the high diffusion of incidence surface serves as preferred.
The thickness of the utility model diffusion barrier 3 is approximately between 20 microns to 400 microns, thinner than employed diffuser plate of traditional planar light source device or LGP volume, and standard method records and is not less than 98% the mist degree of described diffusion barrier 3 according to JIS K7136, so can allow light uniformization, and make planar light source device more compact.
Please referring to Fig. 5, reflectance coating 2 of the present utility model is disposed at framework 6 inside, can be used for the those skilled in the art known reflectance coating of reflectance coating 2 of the present utility model for technical field under any.Reflectance coating 2 of the present utility model for example can be: white reflection film (White Reflective Film) 21, uvioresistant reflectance coating (Anti-UV ReflectiveFilm) 22, high scattered reflection film (Diffusion Reflective Film) 23, metallic reflective coating (Metal ReflectiveFilm) 24 or shielding layer reflectance coating (Concealment Reflective Film) 25.Wherein white reflection film 21 is general reflectance coating; Uvioresistant reflectance coating 22 is for infiltrating ultraviolet ray-resistant material or be coated with an anti-ultraviolet coating 7 at white reflection film 21; High scattered reflection film 23 is coating one high diffusion particle coating 8a on white reflection film 21, and high diffusion particle coating 8a further comprises the high scattered reflection film of uvioresistant of the ultra-violet absorber of organic or inorganic; Metallic reflective coating 24 be with metal 9 evaporations on white reflection film 21, its metal is the metal of high reflectance, for example silver; 25 of shielding layer reflectance coatings are coated with or stick light tight shielding layer 10 on white reflection film 21.The thickness of above-mentioned reflectance coating 2 is approximately between 20 microns to 400 microns, its reflectivity need reach more than 90%, preferred reflectance coating 2 is high scattered reflection film 23, above-mentioned high scattered reflection film 23 is according to ASTM D523 standard method, during with 60 ° of incidence angle projections, the glossiness that records is lower than 10%, in visible wavelength 380 nanometers (nm) in 780 nanometers, the reflectivity that reaches more than 95% can be provided, so can make reverberation produce scattered reflection, the uniform visual angle of easier acquisition, and the brightness that can effectively improve light utilization efficiency and area source.
Light source 1 of the present utility model is that wavelength is between the light source 1 of 380 nanometers (nm) to the visible light of 780 nanometers, described light source can be single wavelength or multi-wavelength, can be used for light source of the present utility model 1 its such as but not limited to cold cathode ray tube (CCFL), light emitting diode (LED), organic electroluminescent element (OLED), macromolecule EL part (PLED), external electrode fluorescent lamp (EEFL), flat florescent lamp (FFL), CNT field emission light-emitting element, Halogen lamp LED, xenon lamp or high-pressure sodium lamp.Light source 1 of the present utility model can be mounted on framework 6 inner arbitrary positions, as is disposed at least one side (as shown in Figure 3) or the interior below (as shown in Figure 4) of framework in the framework.
Planar light source device of the present utility model, do not use LGP 4 or diffuser plate 5, so it is more frivolous than traditional planar light source device, and the utility model utilizes the reflectance coating 2 and the diffusion barrier 3 of the high diffusion of tool, makes light utilize the light total reflection principle to produce homogenization in framework 6, therefore, light uniformization can be spread, make light have high diffusion property,, reach light and all spend effect together to eliminate the light and shade phenomenon.
Claims (23)
1. planar light source device is characterized in that described light supply apparatus comprises:
One framework has at least one opening, and wherein forms a hollow region;
One diffusion barrier is disposed at described framework opening part;
One reflectance coating is disposed at described framework inboard; With
At least one light source is arranged in the described hollow region of described framework.
2. planar light source device according to claim 1 is characterized in that: described framework has single opening.
3. planar light source device according to claim 1 is characterized in that: the shape of described framework is selected from the group that is made of tetrahedron, hexahedron, polyhedron, column, bullet, spheroid and oval ball.
4. planar light source device according to claim 1 is characterized in that: described diffusion barrier embeds described framework opening.
5. planar light source device according to claim 1 is characterized in that: described diffusion barrier is covered on the described framework opening.
6. planar light source device according to claim 1 is characterized in that: described diffusion barrier comprises:
One substrate; With
One high diffusion particle coating, coat described substrate at least the one side.
7. planar light source device according to claim 6 is characterized in that: described high diffusion particle coating is coated the incidence surface of described substrate.
8. planar light source device according to claim 6 is characterized in that: described diffusion barrier further comprises an organic uv absorbers.
9. planar light source device according to claim 6 is characterized in that: described diffusion barrier further comprises an inorganic ultra-violet absorber.
10. planar light source device according to claim 1 is characterized in that: the thickness of described diffusion barrier is between 20 microns to 400 microns.
11. planar light source device according to claim 1 is characterized in that: described diffusion barrier has according to JIS K7136 standard method and records and be not less than 98% mist degree.
12. planar light source device according to claim 1 is characterized in that: described reflectance coating is selected from the group that is made of white inverse film, uvioresistant reflectance coating, high scattered reflection film, metallic reflective coating, shielding layer reflectance coating.
13. planar light source device according to claim 1 is characterized in that: described reflectance coating is a high scattered reflection film.
14. planar light source device according to claim 1 is characterized in that: described at least one light source is a plurality of light sources, is arranged at least one side in the described framework.
15. planar light source device according to claim 1 is characterized in that: described at least one light source is a plurality of light sources, is arranged at the bottom in the described framework.
16. planar light source device according to claim 1 is characterized in that: described light source is single wavelength light source.
17. planar light source device according to claim 1 is characterized in that: described light source is a multi wave length illuminating source.
18. planar light source device according to claim 1 is characterized in that: the wavelength of described light source between 380 nanometers to 780 nanometers.
19. planar light source device according to claim 1 is characterized in that: described light source is selected from the group that is made of cold cathode ray tube, light emitting diode, organic electroluminescent element, macromolecule EL part, external electrode fluorescent lamp and flat florescent lamp.
20. a planar light source device is characterized in that described planar light source device comprises:
One framework has an opening, and wherein forms a hollow region;
One diffusion barrier, it embeds described framework opening, and described diffusion barrier comprises a substrate, one high diffusion particle coating, coat the incidence surface of described substrate, its thickness is between 20 microns to 400 microns, and has according to JIS K7136 standard method and record and be not less than 98% mist degree;
One high scattered reflection film is equipped on the inboard of described framework; With
A plurality of light sources are arranged at the below of described framework.
21. planar light source device according to claim 20 is characterized in that: the shape of described framework is selected from the group that is made of tetrahedron, hexahedron, polyhedron, column, bullet, spheroid and oval ball.
22. planar light source device according to claim 20 is characterized in that: the wavelength of described light source between 380 nanometers to 780 nanometers.
23. planar light source device according to claim 20 is characterized in that: described light source is selected from the group that is made of cold cathode ray tube, light emitting diode, organic electroluminescent element, macromolecule EL part, external electrode fluorescent lamp and flat florescent lamp.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2006200021102U CN2908998Y (en) | 2006-01-25 | 2006-01-25 | Area source device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2006200021102U CN2908998Y (en) | 2006-01-25 | 2006-01-25 | Area source device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2908998Y true CN2908998Y (en) | 2007-06-06 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2006200021102U Expired - Fee Related CN2908998Y (en) | 2006-01-25 | 2006-01-25 | Area source device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2908998Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106597743A (en) * | 2016-12-27 | 2017-04-26 | 武汉华星光电技术有限公司 | Backlight unit and liquid crystal module |
| CN112394443A (en) * | 2013-08-22 | 2021-02-23 | 东洋钢钣株式会社 | Method for producing polarizing plate protective film and polarizing plate protective film |
-
2006
- 2006-01-25 CN CNU2006200021102U patent/CN2908998Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112394443A (en) * | 2013-08-22 | 2021-02-23 | 东洋钢钣株式会社 | Method for producing polarizing plate protective film and polarizing plate protective film |
| CN112394443B (en) * | 2013-08-22 | 2023-04-07 | 东洋钢钣株式会社 | Method for producing polarizing plate protective film and polarizing plate protective film |
| CN106597743A (en) * | 2016-12-27 | 2017-04-26 | 武汉华星光电技术有限公司 | Backlight unit and liquid crystal module |
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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: 20070606 Termination date: 20140125 |