CN1609636A - Method for producing light conducting plate - Google Patents
Method for producing light conducting plate Download PDFInfo
- Publication number
- CN1609636A CN1609636A CN 200310111934 CN200310111934A CN1609636A CN 1609636 A CN1609636 A CN 1609636A CN 200310111934 CN200310111934 CN 200310111934 CN 200310111934 A CN200310111934 A CN 200310111934A CN 1609636 A CN1609636 A CN 1609636A
- Authority
- CN
- China
- Prior art keywords
- light guide
- guide plate
- plate
- manufacturing light
- reflector plate
- 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.)
- Pending
Links
Images
Landscapes
- Planar Illumination Modules (AREA)
- Light Guides In General And Applications Therefor (AREA)
Abstract
The making process of light guiding plate includes the following steps: providing one reflecting sheet, forming designed pattern on the reflecting sheet, providing one male mold and one female mold, setting the reflecting sheet with pattern inside the female mold, closing the male mold and the female mold to form a mold cavity, injecting material for light guiding plate to obtain the light guiding plate.
Description
[technical field]
The present invention relates to a kind of method for manufacturing light guide plate, especially a kind of method for manufacturing light guide plate that is used for LCD.
[background technology]
In recent years, along with the colorize and the maximization of LCD, its application is more extensive, as notebook computer, various desk-top computer, LCD TV etc.Because of LCD is a kind of passive device, itself can not be luminous, thereby need utilize the light source of a light-source system as LCD, as module backlight (Backlight Module), wherein, light guide plate is a critical elements in the module backlight, is used to guide the transmission direction of sending light beam from light source, converts line source or pointolite to the area source outgoing.
See also Fig. 1, disclose a kind of light guide plate 10 of prior art, this light guide plate 10 is made by transparent plastic substrate 103, and these light guide plate 10 exiting surfaces 1033 are evenly distributed with prism structure 101, and bottom surface 1032 is distributed with site 102.Contiguous these light guide plate 10 bottom surfaces 1,032 one sides are provided with reflecting plate 11, and this reflecting plate 11 is flat boards of being made by highly reflective material.The part light that is penetrated by light source (figure do not show) is incident upon reflecting plate 11 after through incidence surface 1031, bottom surface 1032, again through reflecting plate 11 reflected back bottom surfaces 1032, is derived by exiting surface 1033 at last.Owing to have the gap between reflecting plate 11 and the bottom surface 1032, twice process of light can cause light loss during this gap, thereby the utilization factor of light is not high; In addition because of gapped between light guide plate 10 and the reflecting plate 11, so both combination thickness of light guide plate 10 and reflecting plate 11 are also bigger.
[summary of the invention]
There is the gap in order to overcome in the prior art between the reflecting plate and light guide plate, thickness is bigger, and this gap of twice process of light need, can produce the defective of light loss, the invention provides a kind of gap of eliminating between reflecting plate and the light guide plate, improve the method for manufacturing light guide plate of light utilization efficiency.
Method for manufacturing light guide plate provided by the invention may further comprise the steps: a reflector plate is provided, the pattern that designs is formed on this reflector plate; One master mold and a male model are provided, and the reflector plate that will have pattern is placed in the master mold, and closed this master mold and male model also form a die cavity; With light guide plate material ejection formation in this die cavity; Die sinking obtains a light guide plate.
Compared with prior art, because the light guide plate self of method for manufacturing light guide plate manufacturing of the present invention has reflector plate, and these two parts combine closely, so thickness is less.In addition, very close to each other because of combining closely between reflector plate and the bottom surface of light guide plate, light only need pass through an interface, and light loss is reduced, thereby improves light utilization efficiency.
[description of drawings]
Fig. 1 is a kind of prior art light guide plate and the reflecting plate stereographic map that is mated.
Fig. 2 is the reflector plate side view of method for manufacturing light guide plate of the present invention.
Fig. 3 is a method for manufacturing light guide plate ejection formation synoptic diagram of the present invention.
Fig. 4 is a method for manufacturing light guide plate die sinking synoptic diagram of the present invention.
Fig. 5 is the light guide plate side view of method for manufacturing light guide plate gained of the present invention.
[embodiment]
Seeing also Fig. 2 to Fig. 4, is the process flow diagram of method for manufacturing light guide plate of the present invention, and it may further comprise the steps:
One reflector plate 23 is provided, and this reflector plate 23 is metal bases, and the metal base of high reflectance especially is as metals such as aluminium, silver; Also can be plastic material, as polyethylene terephthalate (Poly-Ethylene Terephthalate, PET).Reflector plate 23 is placed on a roller (figure does not show) or dull and stereotyped (figure does not show) below, and this roller or planar surface have the pattern 231 according to the optical demands made that has designed.Should pattern 231 be transferred on the reflector plate 23 flat board by rotating this roller or pressing.As shown in Figure 2, this pattern 231 is semispheres, also can be cylindrical, conical, or actual required other has the pattern of optical characteristics.
See also Fig. 3, a master mold 32 and a male model 34 are provided.Wherein, male model 34 includes a sprue 342.The material of master mold 32, male model 34 is the high metals of conventional thermal conductivity, as copper, aldary or beryllium copper etc.In addition, for improving its intensity, the nickel that can mix, nickel cobalt (alloy) (NiCo), nickel phosphide (NiP), hybrid silicon carbide (SiC), chromium or the contour hard material electroforming of titanium carbide (TiC) form.The reflector plate 23 that has pattern 231 is sent in the master mold 32 through travelling belt (figure does not show), master mold 32, male model 34 are closed, form a die cavity 36, and this die cavity 36 communicates with this sprue 342.By this sprue 342 transparent molten resin (figure does not show) material is injected this die cavity 36, wherein, this resin material should have higher light penetration, as methacrylic resin, it is with the polymkeric substance of methyl methacrylate as main body, and it also can form multipolymer with alkylacrylates such as other resin such as methacrylate, ethyl propylene acid esters.In addition, this transparent resin material can add materials such as release agent, ultraviolet light absorber, pigment, antioxidant and detonator, and the light guide plate finished product that is beneficial to form has the good optical characteristic.This molten resin injection rate is generally at 6000 centimetres
3Below/second, the heating-up temperature of molten resin can suitably be selected according to material therefor, and its temperature can be 170 ℃ to 300 ℃.
Subsequently, molten resin is cooled off, wherein chilling temperature is below 110 ℃, and keeps a period of time under chilling temperature, and die sinking promptly gets the light guide plate 2 that has reflector plate 23 and transparency carrier 21 as shown in Figure 3.
Seeing also Fig. 5, is the side view by the light guide plate 2 of method for manufacturing light guide plate gained of the present invention.This light guide plate 2 is plate shaped, also can be wedge shape, and it comprises a transparent base 21 and a reflector plate 23.Wherein, this transparent base 21 is positioned at the top of this reflector plate 23.
This transparent base 21 is plastic basis materials, as acryl (Acrylic) material.This transparent base 21 comprises at least one incidence surface 211, and it is used to receive the incident beam that light source (figure does not show) sends; One and the bottom surface 213 that intersects vertically of incidence surface 211, it is used for scattering, reflects this incident beam; One exiting surface 215 relative with bottom surface 213, it derives bottom surface 213 scatterings, beam reflected.Wherein, this bottom surface 213 is provided with a plurality of sites 2131, and this site 2131 can be cylindrical, also can be conical, can also be semisphere, and its shape can change according to design.
The upper surface that reflector plate 23 contacts with this transparent base 21 is provided with and a plurality of one to one patterns 231 in this site 2131.If this site 2131 is a standing shape, then this pattern 231 is a recess; If this site 2131 is a recess, then this pattern 231 is a standing shape.
The light guide plate 2 of said structure has the function of integrating prior art light guide plate and reflector plate, and the pattern 231 of reflector plate 23 and the site 2131 of transparent base 21 are chimeric mutually, combine closely between reflector plate 23 and the transparent base 21, do not have the gap, so light guide plate 2 thickness are little.In addition, during because of light process reflector plate 23 and transparent base 21, only pass through the interface of reflector plate 23 and transparent base 21, light loss is reduced, promptly improve light utilization efficiency.The pattern 231 of reflector plate 23 upper surfaces makes the light that imports from incidence surface 211 213 evenly reflex to exiting surface 215 from the bottom surface, reaches the purpose of homogenizing emitting brightness.
Because the light guide plate self of method for manufacturing light guide plate manufacturing of the present invention has reflector plate, reflector plate and base material two parts are combined closely, and thickness reduces, and light loss is reduced, thereby improve light utilization efficiency.
Claims (9)
1. method for manufacturing light guide plate, it may further comprise the steps: a reflector plate is provided, the pattern of design is formed on this reflector plate; One master mold and a male model are provided, and the reflector plate that will have pattern is placed in the master mold, and closed this master mold and male model also form a die cavity; With light guide plate material ejection formation in this die cavity; Die sinking obtains a light guide plate.
2. method for manufacturing light guide plate as claimed in claim 1 is characterized in that: this manufacture method further comprises a cooling step, and it is to carry out before the die sinking step.
3. method for manufacturing light guide plate as claimed in claim 2 is characterized in that: this chilling temperature is smaller or equal to 110 ℃.
4. method for manufacturing light guide plate as claimed in claim 1 is characterized in that: the pattern of this reflector plate is to adopt roller or dull and stereotyped impression to form.
5. method for manufacturing light guide plate as claimed in claim 1 is characterized in that: this pattern is a semisphere, cylindrical or conical.
6. method for manufacturing light guide plate as claimed in claim 1 is characterized in that: the material of this reflector plate is the metal of high reflectance.
7. method for manufacturing light guide plate as claimed in claim 6 is characterized in that: the material of this reflector plate is aluminium or silver.
8. method for manufacturing light guide plate as claimed in claim 1 is characterized in that: the material of this reflector plate is plastics.
9. method for manufacturing light guide plate as claimed in claim 8 is characterized in that: the material of this reflector plate is a polyethylene terephthalate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200310111934 CN1609636A (en) | 2003-10-24 | 2003-10-24 | Method for producing light conducting plate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200310111934 CN1609636A (en) | 2003-10-24 | 2003-10-24 | Method for producing light conducting plate |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1609636A true CN1609636A (en) | 2005-04-27 |
Family
ID=34759529
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200310111934 Pending CN1609636A (en) | 2003-10-24 | 2003-10-24 | Method for producing light conducting plate |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1609636A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102914813A (en) * | 2011-08-04 | 2013-02-06 | 鸿富锦精密工业（深圳）有限公司 | Composite light guide plate and manufacturing method thereof |
| CN103072362A (en) * | 2011-10-25 | 2013-05-01 | 晟铭电子科技股份有限公司 | Hot press molding method and plate assembly thereof |
| CN104214630A (en) * | 2013-05-21 | 2014-12-17 | 黑拉许克联合股份有限公司 | Lighting device for vehicles and flat optical waveguide |
| CN104597557A (en) * | 2015-03-03 | 2015-05-06 | 京东方科技集团股份有限公司 | Composite light guide plate and preparation method thereof, as well as backlight module and display device |
-
2003
- 2003-10-24 CN CN 200310111934 patent/CN1609636A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102914813A (en) * | 2011-08-04 | 2013-02-06 | 鸿富锦精密工业（深圳）有限公司 | Composite light guide plate and manufacturing method thereof |
| CN103072362A (en) * | 2011-10-25 | 2013-05-01 | 晟铭电子科技股份有限公司 | Hot press molding method and plate assembly thereof |
| CN103072362B (en) * | 2011-10-25 | 2016-06-29 | 晟铭电子科技股份有限公司 | Hot press molding method and plate assembly thereof |
| CN104214630A (en) * | 2013-05-21 | 2014-12-17 | 黑拉许克联合股份有限公司 | Lighting device for vehicles and flat optical waveguide |
| CN104597557A (en) * | 2015-03-03 | 2015-05-06 | 京东方科技集团股份有限公司 | Composite light guide plate and preparation method thereof, as well as backlight module and display device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN100462797C (en) | Light guiding plate | |
| US20030090887A1 (en) | Light-guide plate and method for manufacturing the same | |
| CN101261338B (en) | Method for making light guide board | |
| CN101515088B (en) | Liquid crystal display device | |
| CN103913798B (en) | Light guide plate, backlight module, display device and method for manufacturing light guide plate | |
| CN102679243B (en) | Backlight module and display device | |
| CN104183590B (en) | Planar light source device and method for manufacturing light guide plate thereof | |
| CN101191863B (en) | Optical plate preparation method | |
| JP2005215497A (en) | Light diffusion plate and its manufacturing method | |
| US20110075071A1 (en) | Method for manufacturing a light guide for a backlight module in a lcd module | |
| CN201434917Y (en) | Three-layer light guide structure | |
| CN101191869A (en) | Optical plate and preparation method thereof | |
| CN1609636A (en) | Method for producing light conducting plate | |
| CN201072452Y (en) | Mold insert structure of light conducting plate and light conducting plate structure formed by the same | |
| CN102129098A (en) | Light guiding plate, manufacturing method of light guiding plate and side emitting type backlight module | |
| CN101206278A (en) | High dispersion ultra-thin light guide board and manufacturing method thereof | |
| CN1511692A (en) | Method for producing light guide plate and mold | |
| CN101554761B (en) | Processing method of light guide plate of hot press molding liquid crystal display backlight module illuminating system | |
| CN102854561B (en) | Light guide plate and preparation and application thereof | |
| CN101362370A (en) | Molding method for light diffusion structure of diffusion film and apparatus thereof | |
| CN101191867B (en) | Optical plate and preparation method thereof | |
| US20150138835A1 (en) | Light guide plate, method for making the same, backlight module, and display device | |
| CN103698838A (en) | Light guide plate and preparation method thereof, backlight module and display device | |
| CN206725800U (en) | A kind of composite light guide plate | |
| CN100376951C (en) | Light conducting plate ejection and shaping module |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C12 | Rejection of a patent application after its publication | ||
| RJ01 | Rejection of invention patent application after publication |