CN101929641A - Backlight module and display device with backlight module - Google Patents
Backlight module and display device with backlight module Download PDFInfo
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- CN101929641A CN101929641A CN2010102475825A CN201010247582A CN101929641A CN 101929641 A CN101929641 A CN 101929641A CN 2010102475825 A CN2010102475825 A CN 2010102475825A CN 201010247582 A CN201010247582 A CN 201010247582A CN 101929641 A CN101929641 A CN 101929641A
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- module backlight
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- spherical shell
- light source
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Abstract
The invention discloses a backlight module and a display device with the backlight module. The backlight module comprises a light source module and a frame, wherein the light source module comprises a point light source and a light guide spherical shell which covers the outer periphery of the point light source; the bottom surface of the frame is connected with side surfaces of the frame to form a reflecting surface; and the light source module is positioned in a central area of the reflecting surface of the frame, wherein light rays emitted by the point light source are diffused by the light guide spherical shell and are reflected by the reflecting surface to form a surface light source. The backlight module and the display device diffuse the point light source into the uniform surface light source by using the light guide spherical shell and the reflecting surface, and can improve the light source utilization rate and the product reliability.
Description
Technical field
The present invention relates in particular to a kind of display unit that does not have the module backlight of LGP and use this module backlight about a kind of module backlight.
Background technology
See also Fig. 1, Figure 1 shows that the schematic diagram of display unit of the prior art.Display unit 1 comprises preceding frame 2, display floater 3 and module backlight 4, and module 4 wherein backlight includes optical diaphragm group, LGP 6, light source 7, reflector plate 8 and backboard 9, and backboard 9 combines with preceding frame 2 in order to assembling display floater 3 and module backlight 4.Optical diaphragm group for example includes blast sheet 51 and diffusion sheet 52 etc., uses so that the light that light source 7 sends is more even.And in the prior art, traditional small size module 4 backlight is that light source such as many light emitting diodes (LED) 7 are placed LGP (LGP) 6 sides, relies on the pattern of LGP 6 light to be imported LGP 6 and penetrate the formation area source at exiting surface.
In addition, traditional large scale area source adopts the straight-down negative structure, needs a fairly large number of cathode fluorescent tube or LED luminous, forms area source through optical diaphragm group such as diffusion sheets.More than the light utilization efficiency of area source structure of these two kinds of modules backlight all lower.And traditional area source structure adopts reflector plate film material in order to improve the light source utilization ratio more, increased cost to a certain extent, also reduced product reliability.
Summary of the invention
Therefore, the display unit that one of purpose of the present invention is to provide a kind of module backlight and uses this module backlight improves light source utilization rate and product reliability.
For reaching above-mentioned purpose, the invention provides a kind of module backlight, this module backlight comprises light source module and framework.The light source module comprises spot light and guide spherical shell, and this guide spherical shell covers at the periphery of this spot light.The bottom surface of this framework links to each other with the side and forms reflecting surface, and this light source module is positioned at the central area of this reflecting surface of this framework.Wherein, the light that this spot light sends reflects to form area source through this reflecting surface again after this guide spherical shell diffusion.
Further, this module backlight also comprises optical diaphragm group, is positioned at first side of this framework, and this first side is away from this bottom surface.
Further, this module backlight also comprises backboard, is arranged at second side of this framework, and this second side is near this bottom surface.
Further, have at least one reference column on this backboard, have at least one locating hole on this framework, this reference column is corresponding to this locating hole this backboard of location and this framework.
Further, this reflecting surface is single curved surface; Perhaps, this reflecting surface is made up of plane and curved surface.
Further, this bottom surface and this side are made by reflecting material; Perhaps, has one deck reflectance coating on this bottom surface and this side.
Further, the outside of this guide spherical shell has pattern, this pattern make light that this spot light sends after this guide spherical shell to around diffusion.
Further, this guide spherical shell adopts transparent resin material to make, and is scattered with the diffusion particle of light transmission in this guide spherical shell.
The present invention also provides a kind of display unit, and this display unit comprises display floater and aforesaid module backlight, and this module backlight provides backlight for this display floater.
Further, this display unit, this display unit also comprises preceding frame, this preceding frame, this framework and this backboard are met in conjunction with fixing this display floater and this module backlight.
Compared with prior art, module backlight of the present invention and display unit utilize guide spherical shell and reflecting surface that spot light is diffused into uniform surface light source, can improve light source utilization rate and product reliability, and have reduced cost to a certain extent.And the periphery in spot light is covered with guide spherical shell, can make light that spot light sends to around diffusion, reach the homogeneity of optical brightness.
Can be about the advantages and spirit of the present invention by following detailed Description Of The Invention and appended graphic being further understood.
Description of drawings
Figure 1 shows that the schematic diagram of display unit of the prior art;
Figure 2 shows that schematic diagram according to module backlight of the present invention;
Fig. 3 A is depicted as the schematic diagram according to first embodiment of light source module of the present invention;
Fig. 3 B is depicted as the schematic diagram according to first embodiment of framework of the present invention;
Fig. 4 A is depicted as the schematic diagram according to second embodiment of light source module of the present invention;
Fig. 4 B is depicted as the schematic diagram according to second embodiment of framework of the present invention;
Figure 5 shows that the schematic rear view of the framework among Fig. 3 B and Fig. 4 B;
Fig. 6 A is depicted as the schematic diagram according to display unit of the present invention;
Fig. 6 B is depicted as the decomposing schematic representation of the display unit among Fig. 6 A.
The specific embodiment
See also Fig. 2, Fig. 3 A and Fig. 3 B, Figure 2 shows that schematic diagram according to module backlight of the present invention, Fig. 3 A is depicted as the schematic diagram according to first embodiment of light source module of the present invention, and Fig. 3 B is depicted as the schematic diagram according to first embodiment of framework of the present invention.The invention provides a kind of module backlight 10, this module 10 backlight comprises light source module 11 and framework 12.Light source module 11 comprises spot light 13 and guide spherical shell 14, and guide spherical shell 14 covers at the periphery of spot light 13.The bottom surface of framework 12 links to each other with the side and forms reflecting surface 21, and light source module 11 is positioned at the central area of the reflecting surface 21 of framework 12.Wherein, the light that spot light 13 sends reflects to form uniform surface light source through reflecting surface 21 again after guide spherical shell 14 diffusions.Spot light 13 for example is the light emitting diode (LED) of a high brightness, perhaps is other spot lights, not as limit.In addition, in the present embodiment, guide spherical shell 14 for example adopts transparent resin material to make, and is scattered with the diffusion particle of light transmission in the guide spherical shell 14.Wherein, the material of making diffusion particle for example can be selected copolymer, Merlon or inorganic oxide a kind of of acryl system, polystyrene, acryl and polystyrene for use, its refractive index and light-transmissive resin layer material, the particle diameter of diffusion particle is between 100～300um, and particle concentration then need not done special qualification.In addition, it may be noted that, the size of guide spherical shell, material and join the effect that diffusion particle in the moulding material has determined atomizing light, be about to be enclosed in wherein the spot light energy to around penetrate, thereby the luminous flux of the solid angle a of guarantor unit is suitable, guarantees the homogeneity of brightness.
See also Fig. 4 A, Fig. 4 A is depicted as the schematic diagram according to second embodiment of light source module of the present invention.In the present embodiment, the difference of the light source module 11 in the light source module 31 and first embodiment is that the outside of guide spherical shell 34 has pattern 35, pattern 35 make light that spot light 33 sends after this guide spherical shell 34 to around diffusion.In the present embodiment, pattern 35 is the broken line structure for example, thereby utilizes the ray refraction principle, with the energy of spot light 33 to around diffusion, thereby play the effect of atomizing light source.But the shape of pattern or structure can be come conversion according to actual conditions also not as limit.
In first embodiment, shown in Fig. 3 B, this reflecting surface 21 is made up of a plurality of planes, perhaps is made up of plane and curved surface.And the bottom surface and the side of framework 12 are for example made by reflecting material; Perhaps, have one deck reflectance coating on bottom surface and the side, thereby form reflecting surface.And preferably this reflecting material or this reflectance coating have high reflectivity.See also Fig. 4 B, in the present embodiment, the difference of framework 12 is in the structure of framework 42 and first embodiment, and reflecting surface is single curved surface 41, and light source module 11 is positioned at the central area of the reflecting surface 21 of framework 12.
Please continue referring to Fig. 2, light source module 10 also comprises optical diaphragm group 15, and optical diaphragm group 15 is positioned at first side of framework 12, and this first side is away from the bottom surface.Optical diaphragm group 15 for example includes blast sheet, diffusion sheet etc., with so that the light that light source module 11 sends is more even, and also has at least one locating hole 51 on the optical diaphragm group 15, in order to other elements such as backboard or follow-uply confine the position before described.In addition, module 10 backlight also comprises backboard 16, and backboard 16 is arranged at second side of framework 12, and this second side is near the bottom surface, that is first side is relative with second side.
In addition, be combination better, have at least one reference column 61 on the backboard 16, have at least one locating hole 22 on the framework 12, reference column 61 combines location backboard 16 and this framework 12 with locating hole 22.
See also Fig. 5, Figure 5 shows that the schematic rear view of the framework among Fig. 3 B and Fig. 4 B.Also be provided with power line 23 in the bottom of framework 12 that is with the back side of this bottom surface, in order to connect light source module 11.And corresponding, backboard 16 is provided with the corresponding groove 24 of placing power line 23.
See also Fig. 6 A and Fig. 6 B, Fig. 6 A is depicted as the schematic diagram according to display unit of the present invention, and Fig. 6 B is depicted as the decomposing schematic representation of the display unit among Fig. 6 A.The present invention also provides a kind of display unit 40, and this display unit 40 comprises display floater (not shown) and aforesaid module backlight 10, and this module 10 backlight provides backlight for this display floater.In addition, this display unit 40 also comprises preceding frame 17, and this preceding frame 17, this framework 12 and this backboard 16 mutually combine and fix this display floater and this module 10 backlight.Wherein should before for example be provided with fixed leg 71 on frame 17, the locating hole 51 that this fixed leg 71 passes optical diaphragm group 15 combines with the locating hole 22 of framework 12, thus with backboard 16 in conjunction with fixed display panel and module backlight 10.
In sum, module backlight of the present invention and display unit utilize guide spherical shell and reflecting surface that spot light is diffused into uniform surface light source, can improve light source utilization rate and product reliability, and have reduced cost to a certain extent.And the periphery in spot light is covered with guide spherical shell, can make light that spot light sends to around diffusion, reach the homogeneity of optical brightness.
By the above detailed description of preferred embodiments, be to wish to know more to describe feature of the present invention and spirit, and be not to come protection scope of the present invention is limited with above-mentioned disclosed preferred embodiment.On the contrary, its objective is that hope can contain in the protection domain of claim of being arranged in of various changes and tool equality institute of the present invention desire application.Therefore, the protection domain of the claim that the present invention applied for should be done the broadest explanation according to above-mentioned explanation, contains the arrangement of all possible change and tool equality to cause it.
Claims (10)
1. a module backlight is characterized in that this module backlight comprises
The light source module comprises spot light and guide spherical shell, and this guide spherical shell covers at the periphery of this spot light; And
Framework, the bottom surface of this framework link to each other with the side and form reflecting surface, and this light source module is positioned at the central area of this reflecting surface of this framework;
Wherein, the light that this spot light sends reflects to form area source through this reflecting surface again after this guide spherical shell diffusion.
2. module backlight as claimed in claim 1 is characterized in that this module backlight also comprises optical diaphragm group, is positioned at first side of this framework, and this first side is away from this bottom surface.
3. module backlight as claimed in claim 1 is characterized in that this module backlight also comprises backboard, is arranged at second side of this framework, and this second side is near this bottom surface.
4. module backlight as claimed in claim 3 is characterized in that having at least one reference column on this backboard, has at least one locating hole on this framework, and this reference column is corresponding to this locating hole this backboard of location and this framework.
5. module backlight as claimed in claim 1 is characterized in that this reflecting surface is single curved surface; Perhaps, this reflecting surface is made up of plane and curved surface.
6. module backlight as claimed in claim 1 is characterized in that this bottom surface and this side made by reflecting material; Perhaps, has one deck reflectance coating on this bottom surface and this side.
7. module backlight as claimed in claim 1 is characterized in that the outside of this guide spherical shell has pattern, this pattern make light that this spot light sends after this guide spherical shell to around diffusion.
8. module backlight as claimed in claim 1 is characterized in that this guide spherical shell adopts transparent resin material to make, and is scattered with the diffusion particle of light transmission in this guide spherical shell.
9. a display unit is characterized in that this display unit comprises
Display floater; And
As any described module backlight of claim 1-8, this module backlight provides backlight for this display floater.
10. display unit as claimed in claim 9 is characterized in that this display unit also comprises preceding frame, and this preceding frame, this framework and this backboard mutually combine and fix this display floater and this module backlight.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102475825A CN101929641A (en) | 2010-08-01 | 2010-08-01 | Backlight module and display device with backlight module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102475825A CN101929641A (en) | 2010-08-01 | 2010-08-01 | Backlight module and display device with backlight module |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101929641A true CN101929641A (en) | 2010-12-29 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010102475825A Pending CN101929641A (en) | 2010-08-01 | 2010-08-01 | Backlight module and display device with backlight module |
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| CN (1) | CN101929641A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102537775A (en) * | 2011-10-25 | 2012-07-04 | 深圳市华星光电技术有限公司 | Backlight module and liquid crystal display |
| CN102799000A (en) * | 2012-08-16 | 2012-11-28 | 深圳市华星光电技术有限公司 | Liquid crystal display device |
-
2010
- 2010-08-01 CN CN2010102475825A patent/CN101929641A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102537775A (en) * | 2011-10-25 | 2012-07-04 | 深圳市华星光电技术有限公司 | Backlight module and liquid crystal display |
| CN102799000A (en) * | 2012-08-16 | 2012-11-28 | 深圳市华星光电技术有限公司 | Liquid crystal display device |
| WO2014026417A1 (en) * | 2012-08-16 | 2014-02-20 | 深圳市华星光电技术有限公司 | Liquid crystal display device |
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Application publication date: 20101229 |