CN1561154A - light emitting device - Google Patents
light emitting device Download PDFInfo
- Publication number
- CN1561154A CN1561154A CNA2004100286467A CN200410028646A CN1561154A CN 1561154 A CN1561154 A CN 1561154A CN A2004100286467 A CNA2004100286467 A CN A2004100286467A CN 200410028646 A CN200410028646 A CN 200410028646A CN 1561154 A CN1561154 A CN 1561154A
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- China
- Prior art keywords
- light
- reflector
- reflecting material
- concave surface
- block body
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- 239000000463 material Substances 0.000 claims abstract description 57
- 239000012141 concentrate Substances 0.000 claims description 37
- 239000000203 mixture Substances 0.000 claims description 16
- 210000002421 cell wall Anatomy 0.000 claims description 14
- 239000012788 optical film Substances 0.000 claims description 7
- 229910052751 metal Inorganic materials 0.000 claims description 4
- 239000002184 metal Substances 0.000 claims description 4
- 238000007789 sealing Methods 0.000 claims description 2
- -1 acryl Chemical group 0.000 claims 3
- 239000011521 glass Substances 0.000 description 7
- 238000000576 coating method Methods 0.000 description 5
- 239000011248 coating agent Substances 0.000 description 4
- QSHDDOUJBYECFT-UHFFFAOYSA-N mercury Chemical compound [Hg] QSHDDOUJBYECFT-UHFFFAOYSA-N 0.000 description 3
- 229910052753 mercury Inorganic materials 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 239000010408 film Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 240000007594 Oryza sativa Species 0.000 description 1
- 235000007164 Oryza sativa Nutrition 0.000 description 1
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 239000004411 aluminium Substances 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 239000004973 liquid crystal related substance Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 229910001092 metal group alloy Inorganic materials 0.000 description 1
- 230000000750 progressive effect Effects 0.000 description 1
- 235000009566 rice Nutrition 0.000 description 1
- 239000004332 silver Substances 0.000 description 1
- 229910052709 silver Inorganic materials 0.000 description 1
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Abstract
A light-emitting device comprises a light source concentration block and a lamp tube. The light source concentration block comprises a concentration block body and a reflecting material. The concentrating block body is provided with an arc-shaped groove, and the reflecting material is formed on the groove wall of the arc-shaped groove. The lamp tube is arranged on the light source concentration block in a way of being embedded with the arc-shaped groove, and the tube body of part of the lamp tube is coated by the reflecting material.
Description
Technical field
The relevant a kind of light-emitting device of the present invention, and particularly relevant a kind of light-emitting device of concentrating the divergence of beam angle of piece control fluorescent tube with light source.
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.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 floater of non-self-luminosity.Wherein, the light of backlight assembly comes from its inner set light source, as fluorescent tube or light-emitting diode.
Please refer to Fig. 1, it is the profile of traditional fluorescent tube.In Fig. 1, fluorescent tube 100 comprises a glass tube 102, a fluorescence coating 104 and a reflector 106, and fluorescence coating 104 is to coat on the inwall of pipe shaft of glass tube 102, and reflector 106 is to coat on the outer wall of pipe shaft of glass tube 102.Wherein, reflector 106 has a light exit wound of bullet 108, in order to the divergence of beam angle Θ 2 of decision fluorescent tube 100.
When the electrode part (not being shown among Fig. 1) at the two ends of fluorescent tube 100 was applied in a high voltage, electronics was promptly penetrated by the central authorities of electrode part toward the pipe shaft of fluorescent tube 100, and electronics will with interior mercury (Hg) bump of glass tube 102.After the electronic impact that mercury is quickened by high voltage, mercury will return a stable state rapidly by a labile state, and with excess energy with wavelength be 253.7 how the ultraviolet ray of rice (nm) discharge.This ultraviolet ray will be absorbed by fluorescence coating 104 and transfer visible light to.After the reflection via reflector 102, light will penetrate to fluorescent tube 100 via light exit wound of bullet 108.
Forming reflector 106 in the process of the outer wall of the pipe shaft of glass tube 102; usually can elder generation on the outer wall of the pipe shaft of glass tube 102, be coated with one deck reflecting material; and then strike off reflecting material corresponding to the part of light exit wound of bullet 108, to form reflector 106.Yet so design is difficult to control the size of light exit wound of bullet 108, thereby to cause divergence of beam angle Θ 2 be not as angle as expected.In addition, in the process of the reflecting material that strikes off part, fluorescent tube 100 is easy to by scratch, has shortened the life-span of fluorescent tube 100.In addition, because reflector 106 is limited for the adhesive force of the outer wall of glass tube 102 pipe shafts, so reflector 106 is very easy to peel off when being subjected to external force, and causes the divergence of beam angle of fluorescent tube 100 also can't keep fixing.
Summary of the invention
In view of this, purpose of the present invention just provides a kind of light-emitting device, and it is with the design that light source with reflector is concentrated piece carrying fluorescent tube, can avoid the reflector to be subjected to external force and comes off, and control the divergence of beam angle of fluorescent tube exactly.
According to the present invention, a kind of light-emitting device is proposed, comprise a concentrated piece of a light source and a fluorescent tube.This light source concentrates piece to comprise that one concentrates a block body and a reflecting material.Concentrated block body has an arc groove, and reflecting material is formed on the cell wall of this arc groove.Fluorescent tube is to concentrate on the piece to be arranged at light source with the chimeric mode of arc groove, and the pipe shaft of the fluorescent tube of part is that the material that is reflected coats.
According to the present invention, a kind of backlight assembly is proposed, comprise a framework and a light-emitting device.This framework end face forms a storage tank.Light-emitting device is arranged in this storage tank, and this light-emitting device comprises a concentrated piece of a light source and a fluorescent tube.This light source is concentrated piece to include one and is concentrated a block body and a reflecting material, and this reflecting material is to be formed on the cell wall of the arc groove of concentrating block body.Fluorescent tube is to concentrate on the piece to be arranged at light source with the chimeric mode of arc groove, and the pipe shaft of the fluorescent tube of part is that the material that is reflected coats.
According to the present invention, a kind of backlight assembly is proposed, comprise a framework, a reflecting plate, a light guide plate, a reflector and a light-emitting device.Reflecting plate is arranged on the base plate of framework, and light guide plate then is arranged on this reflecting plate.Reflector is to be arranged between the side of framework side plate and light guide plate, and reflector has a reflector base plate, a reflector side plate and a reflector top board.The common reflector groove that forms of reflector base plate, reflector side plate and reflector top board, the opening of this reflector groove is towards light guide plate, a side of the bottom surface of reflector top board is the side contacts with the end face of light guide plate.Light-emitting device is to be arranged in the reflector groove, and light-emitting device comprises a concentrated piece of a light source and a fluorescent tube.This light source is concentrated piece, comprises that one concentrates a block body and a reflecting material.This concentrated block body has an arc groove, and the opening of this arc groove is the side towards light guide plate, and reflecting material is formed on the cell wall of this arc groove.Fluorescent tube is to concentrate on the piece to be arranged at light source with the chimeric mode of arc groove, and the pipe shaft of the fluorescent tube of part is that the material that is reflected coats.
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.
Description of drawings
Fig. 1 is the profile of traditional fluorescent tube.
Fig. 2 is the profile according to the backlight assembly of embodiments of the invention one.
Fig. 3 is the exploded perspective view of the light-emitting device of Fig. 2.
Fig. 4 is a profile of concentrating piece according to the light source of embodiments of the invention two.
Fig. 5 is the profile according to the backlight assembly of embodiments of the invention three.
Embodiment
Embodiment one
Please refer to Fig. 2, it is the profile according to the backlight assembly of embodiments of the invention one.In Fig. 2, backlight assembly 200 comprises a framework 202, several light-emitting devices 300 and multi-layer optical film 206 at least.The end face of framework 202 forms a storage tank 204, and each light-emitting device 200 is arranged in the storage tank 204 by the mode that adjoins each other and be arranged in parallel.Multi-layer optical film 206 is that the mode with the opening of sealing storage tank 204 is arranged on the end face of framework 202, and is positioned at the top of described light-emitting device 200.It should be noted that multi-layer optical film 206 for example is diffuser plate (diffusing plate), rhombus lens (prism sheet) and bright enhancement film (brightness enhanced film, combination BEF).
Please refer to Fig. 3, it is the exploded perspective view according to the light-emitting device of Fig. 2.Please also refer to Fig. 2, in Fig. 3, light-emitting device 300 comprises a concentrated piece 302 of a light source and a fluorescent tube 310, and light source concentrates piece 302 to comprise that one concentrates a block body 304 and a reflecting material 308, concentrates the end face of block body 304 to have an arc groove 306.Reflecting material 308 is formed on the cell wall of arc groove 306, and reflecting material 306 for example is with the formed metallic reflective coating of coating method, and the material of reflecting material 308 is metal or metal alloy such as silver, aluminium and copper.Fluorescent tube 310 is to concentrate on the piece 302 to be arranged at light source with the chimeric mode of arc groove 306, and the pipe shaft of the fluorescent tube 310 of part to be the material 308 that is reflected coat.Wherein, fluorescent tube 310 for example be a cold-cathode tube (cold cathode fluorescent lamp, CCFL).Generally speaking, the curvature of the cell wall of arc groove 306 is corresponding with the curvature of the pipe shaft of fluorescent tube 310, makes light source concentrate the piece 302 can support luminous tube 310, and the pipe shaft of the fluorescent tube 310 that reflecting material 308 can covered section.
Under the situation that the curvature of the cell wall of arc groove 306 remains unchanged, the big or small D of light exit wound of bullet 312 is by the height H decision of concentrating block body 304.When the height H of concentrating block body 304 heals when high, the big or small D of light exit wound of bullet 312 will be more little, and the divergence of beam angle Z of fluorescent tube 310 also can and then dwindle.So,, just can obtain the big or small D of corresponding light exit wound of bullet 312 via the control of the height H of concentrating block body 304.
Embodiment two
Please refer to Fig. 4, it is a profile of concentrating piece according to light source of the present invention.In Fig. 4, light source concentrates piece 302a to comprise that one first concentrates block body 3041, one second to concentrate block body 3042, one first reflecting material 3081 and one second reflecting material 3082.One first composition surface 3043 that first concentrates block body 3041 to have is connected and one first concave surface 3045, the second concentrate block body 3042 to have be connected one second composition surface 3044 and one second concave surface 3046.First reflecting material 3081 and second reflecting material 3082 are to be formed at respectively on first concave surface 3045 and second concave surface 3046.When first composition surface 3043 is connected with first composition surface 3044, first concentrates block body 3041 and second to concentrate the concentrated block body 304 of block body 3042 pie graphs 3, and first concave surface 3045 and second concave surface 3046 form the cell wall of the arc groove 306 of Fig. 3, and first reflecting material 3081 and second reflecting material 3082 are formed in the reflecting material 308 of Fig. 3.Hence one can see that, and it can be that the concentrated block body of a plurality of separation and the reflecting material of a plurality of separation are formed that light source of the present invention is concentrated piece.
Embodiment three
Please refer to Fig. 5, it is the profile according to the backlight assembly of embodiments of the invention three.In Fig. 5, backlight assembly 500 comprises a framework 502, a reflecting plate 504, a light guide plate 506, a reflector 508 and a light-emitting device 600.
Framework 502 has a chassis base 5021 and a framework side plate 5022, and reflecting plate 504 is arranged on the chassis base 5021, and light guide plate 506 is arranged on the reflecting plate 504.Reflector 508 is to be arranged between the side of framework side plate 5022 and light guide plate 506, and reflector 508 has a reflector base plate 5081, a reflector side plate 5082 and a reflector top board 5083, and wherein reflector side plate 5082 is to connect reflector base plate 5081 and reflector top board 5083.
Light-emitting device 600 comprises a concentrated piece 602 of a light source and a fluorescent tube 610, and this light-emitting device 600 is arranged in the reflector groove 5084.Light source concentrates piece 602 to comprise that one concentrates a block body 604 and a reflecting material 608, concentrates the end face of block body 604 to have an arc groove 606, and the opening of arc groove 606 is the sides towards light guide plate 506.Reflecting material 608 is to be formed on the cell wall of arc groove 606.
The light-emitting device that the above embodiment of the present invention disclosed, it concentrates the design of piece carrying fluorescent tube with the light source with reflector, can avoid the reflector to be subjected to external force and come off, and control the divergence of beam angle of fluorescent tube exactly, and it is many to promote the brightness 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, under the situation that does not break away from spirit of the present invention, also can make the variation and the modification of various equivalences, therefore, as long as variation, the modification to the foregoing description all will drop in the scope of claims of the present invention in connotation scope of the present invention.
Claims (16)
1. light-emitting device comprises:
One light source is concentrated piece, comprising:
One concentrates block body, has an arc groove; And
One reflecting material is to be formed on the cell wall of this arc groove; And
One fluorescent tube is to concentrate on the piece to be arranged at this light source with the chimeric mode of this arc groove, and the pipe shaft of this fluorescent tube of part is coated by this reflecting material.
2. light-emitting device as claimed in claim 1 is characterized in that this concentrated block body comprises:
One first concentrates block body, has one first composition surface and one first concave surface that are connected; And
One second concentrates block body, has one second composition surface and one second concave surface that are connected, and this second composition surface makes this second concave surface and this first concave surface form the cell wall of this arc groove in order to be connected with this first composition surface.
3. light-emitting device as claimed in claim 2 is characterized in that this reflecting material comprises:
One first reflecting material is to be formed on this first concave surface; And
One second reflecting material is to be formed on this second concave surface.
4. light-emitting device as claimed in claim 1, the material that it is characterized in that this concentrated block body is an acryl.
5. light-emitting device as claimed in claim 1 is characterized in that this reflecting material is a metal.
6. backlight assembly comprises:
One framework, its end face are to form a storage tank; And
One light-emitting device is to be arranged in this storage tank, and this light-emitting device comprises:
One light source is concentrated piece, comprising:
One concentrates block body, has an arc groove; And
One reflecting material is to be formed on the cell wall of this arc groove; And
One fluorescent tube is to concentrate on the piece to be arranged at this light source with the chimeric mode of this arc groove, and the pipe shaft of this fluorescent tube of part is coated by this reflecting material.
7. backlight assembly as claimed in claim 6 is characterized in that this concentrated block body comprises:
One first concentrates block body, has one first composition surface and one first concave surface that are connected; And
One second concentrates block body, has one second composition surface and one second concave surface that are connected, and this second composition surface is in order to be connected with this first composition surface, makes this this second concave surface and this first concave surface form the cell wall of this arc groove.
8. backlight assembly as claimed in claim 7 is characterized in that this reflecting material comprises:
One first reflecting material is to be formed on this first concave surface; And
One second reflecting material is to be formed on this second concave surface.
9. backlight assembly as claimed in claim 6 is characterized in that it is acryl that this light source is concentrated the material of piece.
10. backlight assembly as claimed in claim 6 is characterized in that this reflecting material is a metal.
11. backlight assembly as claimed in claim 6 is characterized in that this backlight assembly also comprises a multi-layer optical film, this multi-layer optical film is that the mode with the opening of sealing this storage tank is arranged on the end face of this framework, and is positioned at the top of this light-emitting device.
12. a backlight assembly comprises:
One framework has a chassis base and a framework side plate;
One reflecting plate is to be arranged on this chassis base;
One light guide plate is to be arranged on this reflecting plate;
One reflector, be to be arranged between the side of this framework side plate and this light guide plate, this reflector has a reflector base plate, a reflector side plate and a reflector top board, this reflector side plate is to connect this reflector base plate and this reflector top board, this reflector base plate, this reflector side plate and this reflector top board are to form a reflector groove, the opening of this reflector groove is towards this light guide plate, and a side of the bottom surface of this reflector top board is the side contacts with the end face of this light guide plate; And
One light-emitting device is to be arranged in this reflector groove, and this light-emitting device comprises:
One light source is concentrated piece, comprising:
One concentrates block body, has an arc groove, and the opening of this arc groove is the side towards this light guide plate; And
One reflecting material is to be formed on the cell wall of this arc groove; And
One fluorescent tube is to concentrate on the piece to be arranged at this light source with the chimeric mode of this arc groove, and the pipe shaft of this fluorescent tube of part is coated by this reflecting material, and the light of this fluorescent tube is that the side via this light guide plate enters in this light guide plate.
13. backlight assembly as claimed in claim 12 is characterized in that this concentrated block body comprises:
One first concentrates block body, has one first composition surface and one first concave surface that are connected; And
One second concentrates block body, has one second composition surface and one second concave surface that are connected, and this second composition surface is in order to be connected with this first composition surface, makes this this second concave surface and this first concave surface form the cell wall of this arc groove.
14. backlight assembly as claimed in claim 13 is characterized in that this reflecting material comprises:
One first reflecting material is to be formed on this first concave surface; And
One second reflecting material is to be formed on this second concave surface.
15. backlight assembly as claimed in claim 12 is characterized in that it is acryl that this light source is concentrated the material of piece.
16. backlight assembly as claimed in claim 12 is characterized in that this reflecting material is a metal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100286467A CN100521861C (en) | 2004-03-03 | 2004-03-03 | light emitting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100286467A CN100521861C (en) | 2004-03-03 | 2004-03-03 | light emitting device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1561154A true CN1561154A (en) | 2005-01-05 |
| CN100521861C CN100521861C (en) | 2009-07-29 |
Family
ID=34441270
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2004100286467A Expired - Fee Related CN100521861C (en) | 2004-03-03 | 2004-03-03 | light emitting device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100521861C (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101907249B (en) * | 2009-06-08 | 2013-12-11 | 鸿富锦精密工业（深圳）有限公司 | Backlight module |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CZ385298A3 (en) * | 1996-05-31 | 1999-05-12 | Fusion Lighting, Inc. | Electrode-free discharge lamp with multiple reflection and sulfur or selenium charge and process for producing radiation by making use of such discharge lamp |
| JPH10171362A (en) * | 1996-12-06 | 1998-06-26 | Hitachi Ltd | LCD projector |
| JP3148736B2 (en) * | 1999-04-12 | 2001-03-26 | 株式会社キョウワデバイス | Discharge lamp, method of manufacturing discharge lamp and apparatus using the same |
| JP4226796B2 (en) * | 2001-05-30 | 2009-02-18 | 株式会社日立製作所 | Liquid crystal display |
| CN2588406Y (en) * | 2002-12-27 | 2003-11-26 | 三和企业股份有限公司 | Improved structure of direct-lit backlight module assembly |
-
2004
- 2004-03-03 CN CNB2004100286467A patent/CN100521861C/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101907249B (en) * | 2009-06-08 | 2013-12-11 | 鸿富锦精密工业（深圳）有限公司 | Backlight module |
Also Published As
| Publication number | Publication date |
|---|---|
| CN100521861C (en) | 2009-07-29 |
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| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
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Granted publication date: 20090729 |