CN1538221A - Back light ssembly - Google Patents
Back light ssembly Download PDFInfo
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- CN1538221A CN1538221A CNA2003101028595A CN200310102859A CN1538221A CN 1538221 A CN1538221 A CN 1538221A CN A2003101028595 A CNA2003101028595 A CN A2003101028595A CN 200310102859 A CN200310102859 A CN 200310102859A CN 1538221 A CN1538221 A CN 1538221A
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- backlight assembly
- storage tank
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- face
- carrier
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Abstract
A back light assembly is composed of a metal carrier with several heat dissipating channels and a top surface having a recess on it, a reflecting plate in said recess, a light source set in said recess above the reflecting plate, and a diffuse plate above said light source set. Its advantage is high bright quality.
Description
(1) technical field
The relevant a kind of backlight assembly (backlight module) of the present invention, and particularly relevant a kind of with can dispel the heat and the type that extrudes metallic carrier that the structure flatness is high as the backlight assembly of framework (bazel).
(2) background technology
Along with LCD (liquid crystal display, LCD) manufacturing technology is progressive fast, with and possess and frivolous, power saving arranged and do not have advantages such as width of cloth ray, make LCD be applied in large quantities personal digital aid (PDA) (personal digital assistant, PDA), in the various electronic product such as notebook, digital camera, digital camera camera, mobile phone, computer screen and LCD TV.Add the positive input research and development of industry and adopt the production equipment that maximizes, the quality of LCD is constantly promoted, and the lasting decline of price, therefore make the application of LCD enlarge rapidly.But, need could produce the function that shows with the light that backlight assembly provided because the display panels in the LCD is the display panel of non-self-luminosity.
Please refer to Figure 1A, it is the fragmentary cross-sectional view of traditional backlight assembly.In Figure 1A, backlight assembly 10 comprises that a framework (bazel) 11, a reflector plate (reflector sheet) 12, are by several cold-cathode tubes (cold cathode fluorescent lamp, CCFL) 13 light sources that constituted and a diffuser plate (diffuserplate) 14.The end face of framework 11 forms a storage tank 11a, and reflector plate 12 is to be disposed on the bottom land 11b and two cell wall 11c of storage tank 11a in the mode of pasting.These cold-cathode tubes 13 are to be arranged among the storage tank 11a, and are positioned at the top of reflector plate 12.Wherein, diffuser plate 14 is the tops that are disposed at these cold-cathode tubes 13.
Because the material of framework 11 is generally aluminium alloy, and finishes via metal punching mold forming method.Yet, to move towards under large-sized trend at backlight assembly 10, die cost will increase, and framework 11 also is very easy to the distortion depression because of size becomes after big, and shown in Figure 1B, the integral smoothness that influences backlight assembly 10 is very huge.In addition, in Figure 1B,, cause the briliancy of backlight assembly 10 to descend, and diffuser plate 14 is subjected to high temperature easily and is out of shape depression because the heat that framework 11 can't be produced these cold-cathode tubes 13 effectively conducts to the external world.
(3) summary of the invention
In view of this, purpose of the present invention is providing a kind of backlight assembly exactly.It can keep the integral smoothness of backlight assembly on the one hand to extrude the design that the type metallic carrier is a framework, avoids the framework of backlight assembly to be out of shape depression greatly because of size becomes; The heat that backlight assembly inside can be produced conducts to the external world on the other hand, avoids diffuser plate Yin Gaowen and is out of shape depression, to increase the briliancy quality of backlight assembly.
For realizing above-mentioned purpose of the present invention, a kind of backlight assembly according to an aspect of the present invention comprises that one extrudes a type metallic carrier and a light sources.The type metallic carrier of extruding has a carrier end face and several heat dissipation channels, and the carrier end face forms a storage tank.Wherein, light sources is to be disposed in the storage tank.
For realizing above-mentioned purpose of the present invention, a kind of backlight assembly according to a further aspect of the invention comprises that one extrudes a type metallic carrier and a light sources.The type metallic carrier of extruding has a bottom body and dual side-edge body, and bottom body has a body end face and several first heat dissipation channels.The dual side-edge body is to be disposed on the two ends of body end face, and surrounds a storage tank with bottom body.The dual side-edge body has several second heat dissipation channels, and light sources is to be disposed in the storage tank.
For realizing above-mentioned purpose of the present invention,, comprise an aluminium square type carrier, reflector plate, several cold-cathode tubes and a diffuser plate according to a kind of backlight assembly of another aspect of the invention.Aluminium square type carrier has a carrier end face and several heat dissipation channels, and the carrier end face forms a storage tank, and reflector plate is to be disposed in the storage tank.These cold-cathode tubes are to be arranged in the storage tank, and are positioned at the top of reflector plate, and diffuser plate is the top that is disposed at these cold-cathode tubes.
For further specifying above-mentioned purpose of the present invention, design feature and effect, the present invention is described in detail below with reference to accompanying drawing.
(4) description of drawings
Figure 1A is the fragmentary cross-sectional view of traditional backlight assembly.
The sectional view of the state when Figure 1B is the framework of Figure 1A and diffuser plate distortion.
Fig. 2 is the fragmentary cross-sectional view according to the backlight assembly of embodiments of the invention one.
Fig. 3 is the fragmentary cross-sectional view according to the backlight assembly of embodiments of the invention two.
(5) embodiment
Embodiment one
Please refer to Fig. 2, it is the fragmentary cross-sectional view according to the backlight assembly of embodiments of the invention one (backlight module).In Fig. 2, backlight assembly 20 comprises that at least one extrudes type metallic carrier 21, reflector plate (reflector sheet) 22, light sources 23 and diffuser plate (diffuser plate) 24.Extrude type metallic carrier 21 and have a carrier end face 21a and several heat dissipation channels 21b, carrier end face 21a forms a storage tank 21c.Wherein, extruding type metallic carrier 21 for example is an aluminium square type carrier.In addition, reflector plate 22 is to be disposed among the storage tank 21c.For example, reflector plate 22 is to be formed on the bottom land 21d and two cell wall 21e of storage tank 21c in the mode of pasting or being coated with.
Light sources 23 is to be disposed among the storage tank 21c, and is positioned at the top of reflector plate 22.Light sources 23 for example is that (cold cathode fluorescent lamp, CCFL), these cold-cathode tubes are to be arranged among the storage tank 21c to several cold-cathode tubes, and are positioned at the top of reflector plate 22.In addition, diffuser plate 24 is the tops that are disposed at light sources 23.For example, the two ends of diffuser plate 24 are to be positioned on the carrier surface 21a, and diffuser plate 24 is the upper end open that can seal storage tank 21c.
Embodiment two
Please refer to Fig. 3, it is the fragmentary cross-sectional view according to the backlight assembly of embodiments of the invention two.In Fig. 3, backlight assembly 30 comprises that at least one extrudes type metallic carrier 31, reflector plate 32, light sources 33 and diffuser plate 34.Extrude type metallic carrier 31 and have a bottom body 31a and dual side-edge body 31b, bottom body 31a has a body end face 31c and several first heat dissipation channels 31d.Dual side-edge body 31b is disposed on the two ends of body end face 31c, and surrounds a storage tank 31e with bottom body 31a, and both sides body 31b has several second heat dissipation channels 31f.
It should be noted that dual side-edge body 31b is disposed on the two ends of body end face 31c in the mode that is spirally connected with bottom body 31a.For example, the present invention utilizes several screws 35 that bottom body 31a and dual side-edge body 31b are assembled into and extrudes type metallic carrier 31.Wherein, extruding type metallic carrier 31 for example is an aluminium square type carrier.
In addition, reflector plate 32 is to be disposed among the storage tank 31e.For example, reflector plate 32 is to be formed on the two cell wall 31h of body end face 31c among the storage tank 31e and storage tank 31e in the mode of pasting or being coated with.
The backlight assembly that the above embodiment of the present invention disclosed is to finish with the extrusion forming method owing to extrude the type metallic carrier, and the high and on-deformable characteristic of its structural strength is fit to large-scale backlight assembly and uses, to keep the structure flatness of backlight assembly very much.In addition, be easier to extrude the design that the type metallic carrier carries out complex component, and manufacturing cost also reduces many.In addition, the type metallic carrier of extruding can be with the quicker external world that conducts to of the heat that light sources produced, and avoids diffuser plate to be subjected to high temperature and is out of shape depression, to increase the briliancy quality of backlight assembly.
Though the present invention describes with reference to current specific embodiment, but those of ordinary skill in the art will be appreciated that, above embodiment is used for illustrating the present invention, should understand and wherein can make variations and modifications and do not break away from the present invention in a broad sense, so be not as limitation of the invention, as long as in connotation scope of the present invention, all will drop in the scope of claims of the present invention variation, the distortion of the above embodiment.
Claims (16)
1. backlight assembly comprises at least:
One extrudes the type metallic carrier, has a carrier end face and several heat dissipation channels, and this carrier end face forms a storage tank; And
One light sources is disposed in this storage tank.
2. backlight assembly as claimed in claim 1, it is characterized in that this extrudes the type metallic carrier and also has a bottom body and dual side-edge body, this bottom body has a body end face, and this dual side-edge body is to be disposed on the two ends of this body end face, and surrounds this storage tank with this bottom body.
3. backlight assembly as claimed in claim 2 is characterized in that this dual side-edge body is to be disposed on the two ends of this body end face in the mode that is spirally connected with this bottom body.
4. backlight assembly as claimed in claim 1 is characterized in that this extrudes the type metallic carrier is an aluminium square type carrier.
5. backlight assembly as claimed in claim 1 is characterized in that this light sources is several cold-cathode tubes, and these cold-cathode tubes are to be arranged in this storage tank.
6. backlight assembly as claimed in claim 1 is characterized in that this backlight assembly also comprises:
One reflector plate is to be disposed in this storage tank, and is positioned at the below of this light sources.
7. backlight assembly as claimed in claim 1 is characterized in that this backlight assembly also comprises:
One diffuser plate is the top that is disposed at this light sources.
8. backlight assembly comprises at least:
One extrudes the type metallic carrier, have a bottom body and dual side-edge body, this bottom body has a body end face and several first heat dissipation channels, this dual side-edge body is to be disposed on the two ends of this body end face, and surrounding a storage tank with this bottom body, this dual side-edge body has several second heat dissipation channels; And
One light sources is to be disposed in this storage tank.
9. backlight assembly as claimed in claim 8 is characterized in that this dual side-edge body is to be disposed on the two ends of this body end face in the mode that is spirally connected with this bottom body.
10. backlight assembly as claimed in claim 8 is characterized in that this extrudes the type metallic carrier is an aluminium square type carrier.
11. backlight assembly as claimed in claim 8 is characterized in that this light sources is several cold-cathode tubes, these cold-cathode tubes are to be arranged in this storage tank.
12. backlight assembly as claimed in claim 8 is characterized in that this backlight assembly also comprises:
One reflector plate is to be disposed in this storage tank, and is positioned at the below of this light sources.
13. backlight assembly as claimed in claim 8 is characterized in that this backlight assembly also comprises:
One diffuser plate is the top that is disposed at this light sources.
14. a backlight assembly comprises at least:
One aluminium square type carrier has a carrier end face and several heat dissipation channels, and this carrier end face forms a storage tank;
One reflector plate is to be disposed in this storage tank;
Several cold-cathode tubes are to be arranged in this storage tank, and are positioned at the top of this reflector plate; And
One diffuser plate is the top that is disposed at these cold-cathode tubes.
15. backlight assembly as claimed in claim 14, it is characterized in that this aluminium square type carrier also has a bottom body and dual side-edge body, this bottom body has a body end face, and this dual side-edge body is to be disposed on the two ends of this body end face, and surrounds this storage tank with this bottom body.
16. backlight assembly as claimed in claim 15 is characterized in that this dual side-edge body is to be disposed on the two ends of this body end face in the mode that is spirally connected with this bottom body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2003101028595A CN1538221A (en) | 2003-10-22 | 2003-10-22 | Back light ssembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2003101028595A CN1538221A (en) | 2003-10-22 | 2003-10-22 | Back light ssembly |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1538221A true CN1538221A (en) | 2004-10-20 |
Family
ID=34333186
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2003101028595A Pending CN1538221A (en) | 2003-10-22 | 2003-10-22 | Back light ssembly |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1538221A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100435003C (en) * | 2005-02-22 | 2008-11-19 | 乐金显示有限公司 | Backlight unit and liquid crystal device having the same |
| CN105666000A (en) * | 2016-03-29 | 2016-06-15 | 苏州市合叶精密机械有限公司 | Long-seam sheet welding fixture with heat dissipating channels |
| CN105759497A (en) * | 2015-01-05 | 2016-07-13 | 三星电子株式会社 | Display device |
-
2003
- 2003-10-22 CN CNA2003101028595A patent/CN1538221A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100435003C (en) * | 2005-02-22 | 2008-11-19 | 乐金显示有限公司 | Backlight unit and liquid crystal device having the same |
| US8169566B2 (en) | 2005-02-22 | 2012-05-01 | Lg Display Co., Ltd. | Backlight unit and liquid crystal device having the same |
| CN105759497A (en) * | 2015-01-05 | 2016-07-13 | 三星电子株式会社 | Display device |
| CN105666000A (en) * | 2016-03-29 | 2016-06-15 | 苏州市合叶精密机械有限公司 | Long-seam sheet welding fixture with heat dissipating channels |
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