CN2273869Y - Improved eiquid crystal displeay back plate - Google Patents
Improved eiquid crystal displeay back plate Download PDFInfo
- Publication number
- CN2273869Y CN2273869Y CN 95246591 CN95246591U CN2273869Y CN 2273869 Y CN2273869 Y CN 2273869Y CN 95246591 CN95246591 CN 95246591 CN 95246591 U CN95246591 U CN 95246591U CN 2273869 Y CN2273869 Y CN 2273869Y
- Authority
- CN
- China
- Prior art keywords
- plate
- liquid crystal
- light guide
- guide plate
- utility
- 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.)
- Expired - Fee Related
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- Light Guides In General And Applications Therefor (AREA)
Abstract
The utility model discloses an improved backlight plate of a liquid crystal display screen, relating to a liquid crystal display screen, comprising a reflecting plate, a light conducting plate, a diffuser plate and lamp tubes, wherein, the reflecting plate and the diffuser plate are respectively stuck on the front surface and the back surface of the light conducting plate, and the top end and / or the bottom end of the light conducting plate is provided with lamp tubes. The utility model is characterized in that the light conducting plate is a rectangular or trapezoidal thin plate composed of two transparent inclined plates whose inclined surfaces are corresponding to each other. Becauselight rays of the lamp tubes of the utility model are refracted and reflected in many times by a third inclined plate, the light rays can uniformly scattered, and the light rays accepted by the back surface of a liquid crystal plate is increased. Thus, the display effect of the liquid crystal plate can be greatly raised.
Description
The backlight of the liquid crystal display screen of the utility model improvement relates to LCDs.
The backlight of existing liquid crystal display screen, system is combined by reflector, light guide plate, diffuser plate and fluorescent tube, the top of light guide plate wherein or bottom are provided with fluorescent tube with the light source as light guide plate, certain of this light guide plate simultaneously is printed with the light scattering point that density differs, and is able to the light of fluorescent tube is derived by light scattering point place; For improving light guide effect, all at present research all concentrates on the mode of printing of light scattering point, but above-mentioned mode of printing is quite difficult in manufacturing process, and there is no tangible raising on its effect.
The purpose of this utility model is to provide a kind of backlight that can improve light guide effect.
The utility model is to realize like this, backlight includes reflector, light guide plate, diffuser plate and fluorescent tube plate, wherein reflector and diffuser plate are attached at the front-back of light guide plate respectively, and top or bottom in light guide plate are provided with fluorescent tube, and light guide plate is formed a rectangular thin plate by two corresponding transparent hang plates in dip plane.
The utility model has the advantages that: because the light of fluorescent tube is through after the repeatedly folding of third hang plate, the reflection, make above-mentioned light can be evenly distributed on the front of whole light guide plate, via diffuser plate the light that the light guide plate front projection goes out is further made it even scattering again, to increase the light that the liquid crystal board back side is accepted, so the imaging results of liquid crystal board can increase substantially.
The following drawings and embodiment will be described further technical characterictic of the present utility model:
Fig. 1 is a three-dimensional exploded view of the present utility model.
Fig. 2 is that light guide plate of the present utility model is implemented synoptic diagram.
Fig. 3 is another enforcement synoptic diagram of light guide plate of the present utility model.
Embodiment 1:
As shown in Figure 1, backlight comprises reflector 1, light guide plate 2, diffuser plate 3 and fluorescent tube 4, and when using, be combined with liquid crystal board 5, reflector 1 wherein and diffuser plate 3 are attached at the front-back of light guide plate 2 respectively, and top or bottom in light guide plate 2 are provided with fluorescent tube 4, the diffuser plate 3 fronts liquid crystal board 5 that has been sticked, face get mat light guide plate 2 turn light rays of fluorescent tube 4 and the back side that is projeced into liquid crystal board 5 are uniformly outwards penetrated again, to manifest the picture-text image in the liquid crystal board 5; Light guide plate 2 is by two transparent hang plates 21,22, forms a rectangular thin plate relatively with its dip plane 23,24.
Embodiment 2:
As shown in Figure 2, hang plate 21 bottom surfaces can be made into has wavy lines to increase refraction effect, and the dip plane 23 of face tilt plate 21 can make concave surface; As shown in Figure 3, convex surface is made in 24 of the dip plane of hang plate 22, make in the bottom surface of hang plate 21,22 in addition to have curved flanges 25 with raising brightness, and control light is at the degree of uniformity of backlight face; Hang plate of the present utility model also can be made into trapezoidal.
The above only is a preferable enforcement situation of the present utility model, and only feature of the present utility model is not limited to this, any be familiar with this skill can think easily and the equivalence variation, all not from the spirit and the creation scope of wooden utility model.
Claims (3)
1. the backlight of the liquid crystal display screen of an improvement, include reflector, light guide plate, diffuser plate and fluorescent tube, wherein reflector and diffuser plate are attached at the front-back of light guide plate respectively, and top or bottom in light guide plate are provided with fluorescent tube, it is characterized in that light guide plate is formed a rectangle or trapezoidal plate by two corresponding transparent hang plates in dip plane.
2. the backlight of the liquid crystal display screen of a kind of improvement according to claim 1 is characterized in that, the dip plane of the hang plate of light guide plate is cambered surface or plane.
3. the backlight of the liquid crystal display screen of a kind of improvement according to claim 1 is characterized in that, the hang plate root edge has one or an above curved flanges.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 95246591 CN2273869Y (en) | 1995-12-06 | 1995-12-06 | Improved eiquid crystal displeay back plate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 95246591 CN2273869Y (en) | 1995-12-06 | 1995-12-06 | Improved eiquid crystal displeay back plate |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2273869Y true CN2273869Y (en) | 1998-02-04 |
Family
ID=33886146
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 95246591 Expired - Fee Related CN2273869Y (en) | 1995-12-06 | 1995-12-06 | Improved eiquid crystal displeay back plate |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2273869Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6801184B2 (en) | 2000-07-06 | 2004-10-05 | Benq Corporation | Backlight device |
| CN100458525C (en) * | 2002-06-25 | 2009-02-04 | 三星电子株式会社 | Lamp assembly, backlight assembly and liquid crystal display apparatus having the same |
-
1995
- 1995-12-06 CN CN 95246591 patent/CN2273869Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6801184B2 (en) | 2000-07-06 | 2004-10-05 | Benq Corporation | Backlight device |
| US7154469B2 (en) | 2000-07-06 | 2006-12-26 | Acer Communications And Multimedia Inc. | Backlight device |
| CN100458525C (en) * | 2002-06-25 | 2009-02-04 | 三星电子株式会社 | Lamp assembly, backlight assembly and liquid crystal display apparatus having the same |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |