CN2599602Y - light guide plate - Google Patents
light guide plate Download PDFInfo
- Publication number
- CN2599602Y CN2599602Y CNU032029667U CN03202966U CN2599602Y CN 2599602 Y CN2599602 Y CN 2599602Y CN U032029667 U CNU032029667 U CN U032029667U CN 03202966 U CN03202966 U CN 03202966U CN 2599602 Y CN2599602 Y CN 2599602Y
- Authority
- CN
- China
- Prior art keywords
- dot matrix
- light guide
- guide plate
- base plate
- arrangement groove
- 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 - Lifetime
Links
- 239000011159 matrix material Substances 0.000 claims abstract description 17
- 238000009792 diffusion process Methods 0.000 claims abstract description 12
- 230000004888 barrier function Effects 0.000 claims abstract description 9
- 239000000843 powder Substances 0.000 claims abstract description 5
- 239000000758 substrate Substances 0.000 claims description 16
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 4
- 229910052782 aluminium Inorganic materials 0.000 claims description 4
- 239000004411 aluminium Substances 0.000 claims description 4
- 238000007650 screen-printing Methods 0.000 abstract description 5
- 239000004973 liquid crystal related substance Substances 0.000 abstract description 3
- 229910001586 aluminite Inorganic materials 0.000 abstract 1
- 230000007547 defect Effects 0.000 abstract 1
- 238000001746 injection moulding Methods 0.000 abstract 1
- 239000012528 membrane Substances 0.000 abstract 1
- 238000003672 processing method Methods 0.000 abstract 1
- 238000001816 cooling Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 230000002950 deficient Effects 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 239000011347 resin Substances 0.000 description 2
- 229920005989 resin Polymers 0.000 description 2
- 239000002253 acid Substances 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 238000004806 packaging method and process Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000002310 reflectometry Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000002834 transmittance Methods 0.000 description 1
- 238000001771 vacuum deposition Methods 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
Landscapes
- Optical Elements Other Than Lenses (AREA)
Abstract
The utility model relates to a light guide plate that uses in backlight suitable for all color LCD, the diffusion surface of base plate is slight even V-arrangement groove on the surface, and the plane of reflection of base plate is on the surface densely covered little concavo-convex circle dot matrix, and the dot matrix surface has plated the aluminite powder, and the rectangle is personally submitted to its characterized in that base plate side, posts V-arrangement groove membrane and diffusion barrier above the V-arrangement groove. The utility model discloses with injection moulding once of superfine processing method, saved each one deck of accurate screen printing layer, diffusion barrier, can improve effectively because accurate screen printing easily produces blind spot and the inhomogeneous defect of colour depth, the reflection luminance of light guide plate can be improved effectively to its three-dimensional reflection of light dot matrix or matrix to improve LCD's definition, extensively be used for liquid crystal display such as portable computer, cell-phone, wall-hanging TV set, portable VCD, DVD, DLD to use.
Description
Technical field
The utility model relates to a kind of light guide plate of using in the backlight of all colour liquid crystal display devices that is applicable to.
Background technology
Light guide plate is the critical component in the colored liquid display panel backlight, and its significant feature is to convert the line source that cold utmost point fluorescent tube provides to area source, and the quality of its quality directly influences image quality.In order to improve reflectivity, improve the light diffusion uniformity, existing light guide plate adopts serigraphy dot matrix or grid at reflecting surface, and diffusingsurface adopts the mode of pasting diffusion barrier to improve the quality of light guide plate.The light guide plate of using in the available liquid crystal display comprises pmma substrate, and substrate two surfaces are minute surface, and the diffusingsurface of substrate is pasted with two layers of two layers of diffusion barriers and V-type groove films.Precise silk screen printed layers and reflectance coating one deck are arranged on the reflecting surface surface of substrate.Its weak point is because the pad pasting number of plies is many, must increase the loss of light, and ink for screen printing is prone to ink diffusion and causes blind spot and the uneven phenomenon of shade, has had a strong impact on the homogeneity of light reflection, influences the sharpness of picture.
Summary of the invention
The purpose of this utility model can be improved exactly effectively because the precise silk screen printing easily produces blind spot and the uneven defective of shade, and provides a kind of and can effectively improve the light reflecting brightness, reflects inhomogeneity light guide plate.
The utility model can be realized by following mode: be the fine and homogeneous V-shaped groove on the diffusingsurface surface of substrate, it on the reflecting surface surface of substrate the nick dome point dot matrix that gathers, the dot matrix surface is coated with aluminium powder, and substrate side surfaces is rectangle, and posts V-shaped groove film and diffusion barrier above the V-shaped groove.
The utility model is with ultra tiny job operation single injection-molded, precise silk screen printed layers, each one deck of diffusion barrier have been saved, can improve effectively because the precise silk screen printing easily produces blind spot and the uneven defective of shade, the reflective dot matrix of its solid or matrix can improve the reflecting brightness of light guide plate effectively, thereby improved the sharpness of LCD, be widely used in LCD such as laptop computer, mobile phone, wall-hanging televisor, portable V CD, DVD, DLD and use.
Description of drawings
Below in conjunction with accompanying drawing, the utility model will be further described.
Fig. 1 is a structural representation of the present utility model.
Fig. 2 is the enlarged drawing of A among Fig. 1.
In the drawings, 1 substrate, 2V shape groove film, 3 diffusion barriers, 4 dot matrix, 5V shape groove.
Embodiment
Please read Fig. 1, substrate 1 is poly-methyl-prop diluted acid formicester, is commonly called as organic glass.Fine and homogeneous V-shaped groove 5 is arranged on the diffusingsurface of substrate 1, the reflecting surface surface of substrate 2 is the nick dome point dot matrix 4 (containing round dot or grid) that evenly gather, see Fig. 2, dot matrix 4 surfaces are coated with aluminium powder, substrate 1 side is rectangle, be pasted with vertical V-shaped groove film 2 and diffusion barrier 3 each one deck above the V-shaped groove 5, the quantity of dot matrix and shape are to design by display sizes size, optical property requirement and configured light sources.
With 14 inches light guide plate is example, 2880 * 1880 in the dot matrix on its tapered plane, 1880 of the V-type grooves on the straight plane.The production run of light guide plate is as follows:
1, material drying.Resin is dried with air drier, to remove moisture content.
2, reinforced.The oil motor of big torsion feeds in raw material, and shortens the time of resin in barrel as far as possible, for guaranteeing not flavescence of material, must control with servo-drive system.
3, high-voltage lock mould.Injection machine adopts four post high-speed hydraulic mould-locking structures, makes mould finish closing course in the shortest time, and locked mode pressure is even, and significantly improve die life.
4, penetrate.The ejaculation system arrives clamping mechanism with fast response servo system control, the interior pressure transducer of mould with suffered pressure feedback, after the digital control computer high speed detection, sends instruction, makes clamping mechanism adjust pressure automatically by setting value and carries out multistage switching controls.
5, plasticizing forming.Detect by the pressure transducer in the mould, the plasticizing process of product in mould all feeds back to the system controlled by computer panel, by the image demonstration plasticizing parameter of panel, and can press the multistage switching cavity pressure of setting value, makes product thermal equilibrium performance in die cavity good.
6, compression forming.When plasticizing reaches predetermined value, by sensor and feed back to microcomputer, carry out pressure by the system controlled by computer mould and switch, product is carried out compression forming.
7, cooling.Cooling circuit cools off product, guarantees the precision of product after the depanning.
8, pressure releasing die sinking.When cooling had been finished, product was taken out in the releasing pressure automatically die sinking.
9, product is sent to vacuum coating equipment and carries out plated film.The material of plated film is a pure aluminium powder, after plated film is finished, makes the dot matrix surface on the reflecting surface of light guide plate form layer of even reflectance coating 3.
10, product send cutting machine to excise cast gate, simultaneously whole incidence surface is carried out mirror finish.
11, detect.At first carry out visual detection, detect with special-purpose briliancy instrument, noncontact three-coordinates measuring machine, transmittance tester, special reflecting device then.
12, specification product are packed with the antistatic packaging bag.
Claims (1)
1, a kind of light guide plate, comprise substrate (1), on the diffusingsurface surface of substrate (1) fine and homogeneous V-shaped groove (5), it on the reflecting surface surface of substrate (1) the nick dome point dot matrix (4) that gathers, dot matrix (4) surface is coated with aluminium powder, it is characterized in that substrate (1) side is rectangle, and posts V-shaped groove film (4) and diffusion barrier (3) above the V-shaped groove (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU032029667U CN2599602Y (en) | 2003-02-18 | 2003-02-18 | light guide plate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU032029667U CN2599602Y (en) | 2003-02-18 | 2003-02-18 | light guide plate |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2599602Y true CN2599602Y (en) | 2004-01-14 |
Family
ID=34157972
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU032029667U Expired - Lifetime CN2599602Y (en) | 2003-02-18 | 2003-02-18 | light guide plate |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2599602Y (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100350311C (en) * | 2004-03-15 | 2007-11-21 | 统宝光电股份有限公司 | Backlight module |
| CN100389346C (en) * | 2004-08-07 | 2008-05-21 | 鸿富锦精密工业（深圳）有限公司 | Light guiding plate and manufacturing method thereof |
| US7463315B2 (en) | 2004-03-11 | 2008-12-09 | Tpo Displays Corp. | Light coupling structure on light guide plate in a backlight module |
| CN101253279B (en) * | 2005-08-30 | 2010-11-24 | 富士胶片株式会社 | Aluminum alloy plate for surface printing plate and method for production thereof |
| CN102588766A (en) * | 2010-10-07 | 2012-07-18 | 索尼公司 | Light-emitting device and image display apparatus |
| CN104676375A (en) * | 2015-02-11 | 2015-06-03 | 深圳市华星光电技术有限公司 | Backlight module and liquid crystal display device comprising same |
-
2003
- 2003-02-18 CN CNU032029667U patent/CN2599602Y/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7463315B2 (en) | 2004-03-11 | 2008-12-09 | Tpo Displays Corp. | Light coupling structure on light guide plate in a backlight module |
| CN100350311C (en) * | 2004-03-15 | 2007-11-21 | 统宝光电股份有限公司 | Backlight module |
| CN100389346C (en) * | 2004-08-07 | 2008-05-21 | 鸿富锦精密工业（深圳）有限公司 | Light guiding plate and manufacturing method thereof |
| CN101253279B (en) * | 2005-08-30 | 2010-11-24 | 富士胶片株式会社 | Aluminum alloy plate for surface printing plate and method for production thereof |
| CN102588766A (en) * | 2010-10-07 | 2012-07-18 | 索尼公司 | Light-emitting device and image display apparatus |
| CN104676375A (en) * | 2015-02-11 | 2015-06-03 | 深圳市华星光电技术有限公司 | Backlight module and liquid crystal display device comprising same |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CX01 | Expiry of patent term |
Expiration termination date: 20130218 Granted publication date: 20040114 |