CN1554973A - Downward back light module - Google Patents
Downward back light module Download PDFInfo
- Publication number
- CN1554973A CN1554973A CNA2003101244965A CN200310124496A CN1554973A CN 1554973 A CN1554973 A CN 1554973A CN A2003101244965 A CNA2003101244965 A CN A2003101244965A CN 200310124496 A CN200310124496 A CN 200310124496A CN 1554973 A CN1554973 A CN 1554973A
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- China
- Prior art keywords
- light source
- type backlight
- direct type
- backlight module
- lamp socket
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- 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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- 230000003287 optical effect Effects 0.000 claims abstract description 37
- 239000000463 material Substances 0.000 claims abstract description 12
- 238000003860 storage Methods 0.000 claims description 23
- 229910052751 metal Inorganic materials 0.000 claims description 3
- 239000002184 metal Substances 0.000 claims description 3
- 238000000465 moulding Methods 0.000 claims 1
- 230000000007 visual effect Effects 0.000 description 14
- 238000010586 diagram Methods 0.000 description 6
- 238000009792 diffusion process Methods 0.000 description 5
- 230000007812 deficiency Effects 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 239000004411 aluminium Substances 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 230000009977 dual effect Effects 0.000 description 2
- 238000003306 harvesting Methods 0.000 description 2
- 239000004973 liquid crystal related substance Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- QSHDDOUJBYECFT-UHFFFAOYSA-N mercury Chemical compound [Hg] QSHDDOUJBYECFT-UHFFFAOYSA-N 0.000 description 1
- 229910052753 mercury Inorganic materials 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
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- Planar Illumination Modules (AREA)
- Liquid Crystal (AREA)
Abstract
The downward back light assembly includes lamp socket, optical module and light source. The lamp socket is provided with one holding slot, and the light source is set on the lamp socket in one fixed angle. The optical module is set on the lamp socket and over the light source. The holding slot has one inclined separating material for bearing light source in some inclined angle so as to make one end of the optical module to accept light beam from the light source and to constitute one homogeneous area light source in large view angle. The present invention has raised edge brightness, improved brightness homogeneity and improved image quality.
Description
(1) technical field
The relevant a kind of direct type backlight module of the present invention, and particularly about a kind of tool with great visual angle and the direct type backlight module of uniform source of light.
(2) background technology
In recent years, (Liquid Crystal Display LCD) because of the concrete advantages such as thin, in light weight and low electromagnetic of amassing, is widely used LCD gradually.And along with the making rapid progress of science and technology, in order to adapt to the fast changing market demand, the function of LCD and usefulness innovates and enhancement always.Wherein, the LCD of wide viewing angle is one of numerous reform and development directions, and the use of planar light source, more makes LCD have that color is many, brightness is high, light-emitting area is even, color is soft and characteristics such as handy.
General LCD mainly comprises a display panel and a backlight module, is example with a direct type backlight module with a plurality of planar light sources, please be simultaneously with reference to Figure 1A and Figure 1B.Figure 1A is the vertical view of traditional direct type backlight module, and Figure 1B is the sectional view of the direct type backlight module of Figure 1A.For the direct type backlight module (direct backlight module) 100 that conventional arrangement has planar light source, direct type backlight module 100 includes a lamp socket 110, an optical module 150 and a plurality of light source 160.A plurality of light sources 160 be cold-cathode plane fluorescent lamp (Cold Cathode Flat Fluorescent Lamp, CCFFL), in order to provide LCD required planar light source.Lamp socket 110 has a storage tank, and a plurality of light source 160 is to be disposed in the storage tank 120, and the arrangement adjacent one another are of each cold-cathode plane fluorescent lamp.Optical module 150 is to be disposed on the lamp socket 110, and wherein, optical module 150 includes makes the light evenly diffuser plate (diffuser) of diffusion and the light-collecting component etc. that makes light-ray condensing.Light-collecting component for example be a bright enhancement film (Brightness Enhancement Film, BEF) or a pair of bright enhancement film (Dual Brightness Enhancement Film, DBEF).
Because the principle of luminosity of cold-cathode plane fluorescent lamp is to utilize the plane carbon electrode that declines to launch electronics, impel free plasma (plasma) state that becomes of gas molecule to produce ultraviolet ray, and then excitated fluorescent powder sends visible light.When light when light source 160 is dissipated into optical module 150, light is all with an angular dispersed perpendicular to storage tank 120 bottom surfaces, shown in Figure 1B.Two end regions 140 that are positioned at optical module 150 so just can't have even and sufficient light incident, can do not spread and be directed to display panel equably so in two end regions 140 of optical module 150, there is even and sufficient light yet, make the luminosity inequality of display panel, so for display with great visual angle, the deficiency of edge brightness has influence on the brightness and the visual angle performance of the whole picture element of display panel, causes image display quality not good.
(3) summary of the invention
In view of this, purpose of the present invention just provides a kind of direct type backlight module, and the problem of face plate edge luminance shortage makes the brightness and the visual angle unanimity of display panel, and promotes image display quality when improving the utilization of display with great visual angle.
According to purpose of the present invention, a kind of direct type backlight module is proposed, comprise lamp socket, optical module and light source.Lamp socket has a storage tank, and light source is disposed on the lamp socket in the mode that becomes a fixed angle to put.Optical module is disposed on the lamp socket, and is positioned at the top of light source.One material at interval also is set on the storage tank, and in order to the carrying light source, the surface of material is an inclined-plane at interval, makes light source be able to angle according to the inclined-plane, is placed on the lamp socket in the mode of fixed angle, makes an end of optical module can receive the light of light source.
According to purpose of the present invention, reintroduce a kind of direct type backlight module, comprise lamp socket, optical module, first planar light source and second planar light source.Lamp socket has storage tank, and has first inclined-plane and second inclined-plane on the two ends of the bottom land of storage tank respectively.First planar light source and second planar light source are to be disposed at respectively on first inclined-plane and second inclined-plane.Optical module is to be disposed on the lamp socket, and is positioned at the top of first planar light source and second planar light source, and the two ends of optical module can receive the light of first planar light source and second planar light source.
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 vertical view of traditional direct type backlight module.
Figure 1B is the sectional view of the direct type backlight module of Figure 1A.
Fig. 2 is the synoptic diagram according to the direct type backlight module of first embodiment of the invention.
Fig. 3 A is the synoptic diagram according to the direct type backlight module of second embodiment of the invention.
Fig. 3 B and Fig. 3 C are the synoptic diagram of other embodiment of lamp socket.
(5) embodiment
Major technique characteristics of the present invention are to improve the structure of lamp socket in the direct type backlight module, the light that makes planar light source launch is dissipated into the edge of display with great visual angle, to overcome traditionally the phenomenon of display edge brightness deficiency with great visual angle, so that display panel face light source greatly and uniformly to be provided, make the brightness performance and the visual angle unanimity of whole pixel on the display panel, improve all neat degree of display panel and promote the image display quality of display.Enumerate two embodiment at this, below conjunction with figs. elaborate.
First embodiment
Please refer to Fig. 2, it is the synoptic diagram according to the direct type backlight module of first embodiment of the invention.Direct type backlight module 200 can be arranged in the LCD, and direct type backlight module 200 comprises at least: lamp socket 210, interval material 230a and 230b, optical module 250 and light source 260a and 260b.
Because at interval material 230a has a chamfered surface with 230b, make to be placed in interval material 230a and 230b respectively upward the time as light source 260a and 260b that light source 260a is become the mode of a fixed angle A with 260b, be disposed on the lamp socket 210. Light source 260a and 260b can be respectively adjust according to the angle of inclination on the inclined-plane of material 230a and 230b at interval, and preferably the light that light source 260a and 260b are launched is projected to respectively in two end regions 240 of optical module 250.
When light source 260a and 260b to become the mode of fixed angle A, when being placed on the lamp socket 210, two end regions 240 of optical module 250 can receive the light of light source 260a and 260b respectively.Like this, can obtain with great visual angle with than uniform surface light source.Again by the diffusion and the light harvesting effect of optical module 250, make light evenly be disperseed and be led on the display panel of LCD, just can overcome the problem of the edge brightness deficiency when having display utilization with great visual angle, also further make the brightness of display panel and visual angle reach unanimity, and can promote image display quality.At this, display panel for example be a display panels (Liquid Crystal Display, LCD).
Wherein, light source 260a and 260b for example are planar light sources, and preferably (Cold Cathode Flat Fluorescent Lamp CCFFL) constitutes, in order to provide LCD required light source with cold-cathode plane fluorescent lamp.And optical module 250 includes and makes the light evenly diffuser plate (diffuser) of diffusion and the light-collecting component etc. that makes light-ray condensing.Light-collecting component for example be a bright enhancement film (BrightnessEnhancement Film, BEF) or a pair of bright enhancement film (Dual Brightness Enhancement Film, DBEF).
Second embodiment
Please refer to Fig. 3 A, it is the synoptic diagram according to the direct type backlight module of second embodiment of the invention.In Fig. 3 A, direct type backlight module 300 can be arranged in the LCD, and direct type backlight module 300 comprises at least: lamp socket 310, optical module 350 and light source 360a and light source 360b.
According to the difference at the angle of inclination of inclined-plane 330a and inclined-plane 330b, the angle that light source 360a and 360b are disposed on the lamp socket 310 also changes thereupon. Light source 360a and 360b can be respectively adjust according to the angle of inclination of inclined-plane 330a and inclined-plane 330b, and preferably the light that light source 360a and 360b are launched is projected to respectively in two end regions 340 of optical module 350.
When light source 360a and 360b to become the mode of fixed angle A, when being placed on the lamp socket 310, two end regions 340 of optical module 350 can receive the light of light source 360a and 360b respectively.Like this, can obtain with great visual angle with than uniform surface light source.Again by the diffusion and the light harvesting effect of optical module 350, make light evenly be disperseed and be led on the display panel of LCD, just can overcome the problem of the edge brightness deficiency when having display utilization with great visual angle, also further make the brightness of display panel and visual angle reach unanimity, and can promote image display quality.At this, display panel for example is a display panels (LCD).
Wherein, light source 360a and 360b for example are planar light sources, preferably constitute with cold-cathode plane fluorescent lamp, and the arrangement adjacent one another are of each cold-cathode plane fluorescent lamp, in order to provide LCD required planar light source.And optical module 350 includes and makes the light evenly diffuser plate of diffusion and the light-collecting component etc. that makes light-ray condensing, and light-collecting component for example is a bright enhancement film (BEF) or a pair of bright enhancement film (DBEF).
It should be noted that, lamp socket 310 included inclined-plane numbers are not limited in inclined-plane number and the configuration mode thereof described in Fig. 3 A, and the angle of inclination on inclined-plane also is not limited to the angle A described in Fig. 3 A, all can utilize spirit of the present invention, adjusts according to different needs.That is to say that included inclined-plane number can be more than two or two in the lamp socket 310.
Fig. 3 B and Fig. 3 C are the synoptic diagram of lamp socket 310 other embodiments.In Fig. 3 B, the bottom land of storage tank 320 has the inclined-plane more than two, preferably has 10 inclined-planes, is respectively inclined-plane 330,331,332,333,334,335,336,337,338 and 339.The adjacent each other arrangement in inclined-plane and inclined-plane makes the bottom surface of lamp socket 310 form a continuous broached-tooth design.On inclined-plane 330～339, dispose planar light source 360～369 respectively one to one accordingly.Planar light source 360～369 to become the mode of a fixed angle, is disposed on the lamp socket 310 respectively.
For the light source 360 and 369 at the two ends, the bottom land left and right sides that are disposed at storage tank 320, light source 360 and 369 is can be respectively to adjust according to the angle of inclination of inclined-plane 330 and 339, preferably light source 360 and 369 light of being launched is projected to respectively in two end regions 340 of optical module 350.
In Fig. 3 C, the bottom land of storage tank 320 has two inclined-plane 330c and 330d, and inclined-plane 330c and 330d preferably are arranged at the two ends, the left and right sides of the bottom land of storage tank 320 respectively.And for the bottom land of storage tank 320, except that inclined-plane 330c then becomes a plane with other zone the 330d.Dispose planar light source 360c and 360d on inclined-plane 330c and the 330d accordingly respectively.Planar light source 360c and 360d can be respectively adjust according to the angle of inclination of inclined-plane 330c and 330d, and preferably the light that light source 360c and 360d are launched is projected to respectively in two end regions 340 of optical module 350.
In addition,, be to utilize Mold Making and one-body molded, or utilize a metal sheet to work as main body, again this metal sheet is carried out the flanging mode and make for the manufacture of lamp socket 210 and 310.Or be the mode that adopts aluminium extruded shape, be made into to push an aluminium.And be not limited to above-mentioned planar light source for the light source that is disposed, and except being preferably above-mentioned cold-cathode plane fluorescent lamp tool (CCFFL), not mercurous (mercury, planar light source Hg) or to can be the light source of other form again also applicable.In addition, on the surface of the storage tank 220 of lamp socket 210 and 310 and 320 both sides, also preferably dispose a reflector plate, or make the reflexive material of apparatus respectively sputter on the surface of storage tank 220 and 320 both sides, but reflection ray leaks outside to prevent light.
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 (22)
1. direct type backlight module is characterized in that comprising at least:
One lamp socket is formed with a storage tank;
One light source, the mode to become a fixed angle to put is disposed on this lamp socket; And
One optical module is disposed on this lamp socket and is positioned at the top of this light source, and an end of this optical module can receive the light of this light source.
2. direct type backlight module as claimed in claim 1, it is characterized in that also being provided with on this storage tank an interval material, in order to carry this light source, the surface of this interval material is an inclined-plane, make this light source be able to angle, be placed on this lamp socket in the mode of this fixed angle according to this inclined-plane.
3. direct type backlight module as claimed in claim 1 is characterized in that this light source is a planar light source.
4. direct type backlight module as claimed in claim 3 is characterized in that this planar light source is a cold-cathode plane fluorescent lamp tool.
5. direct type backlight module as claimed in claim 3 is characterized in that this planar light source is not mercurous planar light source.
6. direct type backlight module as claimed in claim 1 is characterized in that this optical module is a diffuser plate.
7. direct type backlight module as claimed in claim 1 is characterized in that this optical module is a light-collecting component.
8. direct type backlight module as claimed in claim 7 is characterized in that this light-collecting component is a bright enhancement film.
9. direct type backlight module as claimed in claim 7 is characterized in that this light-collecting component is a pair of bright enhancement film.
10. direct type backlight module as claimed in claim 1 is characterized in that this direct type backlight module is to be disposed in the LCD.
11. a direct type backlight module is characterized in that comprising at least:
One lamp socket is formed with a storage tank, and the two ends of the bottom land of this storage tank have one first inclined-plane and one second inclined-plane respectively;
One first light source and a secondary light source are to be disposed at respectively on this first inclined-plane and this second inclined-plane; And
One optical module is to be disposed on this lamp socket, and is positioned at the top of this first light source and this secondary light source, and the two ends of this optical module are the light that can receive this first light source and this secondary light source.
12. direct type backlight module as claimed in claim 11 is characterized in that this first light source and this secondary light source are a planar light source.
13. direct type backlight module as claimed in claim 12 is characterized in that this planar light source is a cold-cathode plane fluorescent lamp tool.
14. direct type backlight module as claimed in claim 12 is characterized in that this planar light source is not mercurous planar light source.
15. direct type backlight module as claimed in claim 11 is characterized in that this optical module is a diffuser plate.
16. direct type backlight module as claimed in claim 11 is characterized in that this optical module is a light-collecting component.
17. direct type backlight module as claimed in claim 16 is characterized in that this light-collecting component is a bright enhancement film.
18. direct type backlight module as claimed in claim 16 is characterized in that this light-collecting component is a pair of bright enhancement film.
19. direct type backlight module as claimed in claim 11 is characterized in that this lamp socket is to be made into mould molding.
20. direct type backlight module as claimed in claim 11 is characterized in that this lamp socket is to carry out the flanging mode again with a metal sheet to be made into.
21. direct type backlight module as claimed in claim 11 is characterized in that this lamp socket is to make with extrinsion pressing.
22. direct type backlight module as claimed in claim 11 is characterized in that this direct type backlight module is configurable in a LCD.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200310124496 CN1288483C (en) | 2003-12-25 | 2003-12-25 | Downward back light module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200310124496 CN1288483C (en) | 2003-12-25 | 2003-12-25 | Downward back light module |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1554973A true CN1554973A (en) | 2004-12-15 |
| CN1288483C CN1288483C (en) | 2006-12-06 |
Family
ID=34338990
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200310124496 Expired - Lifetime CN1288483C (en) | 2003-12-25 | 2003-12-25 | Downward back light module |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1288483C (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102829402A (en) * | 2012-09-14 | 2012-12-19 | 京东方科技集团股份有限公司 | Direct type backlight module and display device thereof |
| CN107436509A (en) * | 2016-05-27 | 2017-12-05 | 鸿富锦精密工业（深圳）有限公司 | Backlight module |
| CN115877611A (en) * | 2022-12-06 | 2023-03-31 | 深圳创维－Rgb电子有限公司 | Backlight module and display device |
-
2003
- 2003-12-25 CN CN 200310124496 patent/CN1288483C/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102829402A (en) * | 2012-09-14 | 2012-12-19 | 京东方科技集团股份有限公司 | Direct type backlight module and display device thereof |
| CN102829402B (en) * | 2012-09-14 | 2015-02-04 | 京东方科技集团股份有限公司 | Direct type backlight module and display device thereof |
| CN107436509A (en) * | 2016-05-27 | 2017-12-05 | 鸿富锦精密工业（深圳）有限公司 | Backlight module |
| CN115877611A (en) * | 2022-12-06 | 2023-03-31 | 深圳创维－Rgb电子有限公司 | Backlight module and display device |
| CN115877611B (en) * | 2022-12-06 | 2024-07-02 | 深圳创维－Rgb电子有限公司 | Backlight module and display device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1288483C (en) | 2006-12-06 |
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| SE01 | Entry into force of request for substantive examination | ||
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Granted publication date: 20061206 |