CN101738676B - Manufacturing method of light guide plate - Google Patents
Manufacturing method of light guide plate Download PDFInfo
- Publication number
- CN101738676B CN101738676B CN200810305391A CN200810305391A CN101738676B CN 101738676 B CN101738676 B CN 101738676B CN 200810305391 A CN200810305391 A CN 200810305391A CN 200810305391 A CN200810305391 A CN 200810305391A CN 101738676 B CN101738676 B CN 101738676B
- Authority
- CN
- China
- Prior art keywords
- making
- lgp
- photoresist layer
- exposure device
- tabular
- 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
Links
Images
Abstract
The invention relates to a manufacturing method of a light guide plate, comprising the following steps of: producing a platy performing body from molten resin and cooling to obtain a flat plate with a preset size; forming a liquid state photoresist layer on the surface of the flat plate; exposing the photoresist layer by adopting an exposing device; and moving an uncured photoresistor so as to form a plurality of convex screen dots on the surface of the flat plate. By using the manufacturing method of the light guide plate, moulds with large size and jetting and forming equipment are not needed any more and the shapes and the sizes of the formed screen dots are controllable; and the manufacturing method has the advantages of low cost, high precision, simple process, rapidness and the like.
Description
Technical field
The present invention relates to LGP and make the field, relate in particular to a kind of method for making of large-size light-conducting plate.
Background technology
Along with the large scale development of plate of flat liquid crystal display, more and more come into one's own as the LGP of LCD light-source system significant components.The LGP surface is provided with a plurality of sites usually, in order to the total reflection condition of broken beam in the LGP internal transmission, thereby and makes beam divergence improve the emergent light homogeneity.The manufacturing approach of light guide plate mesh point mainly contains two kinds of printing-type and non-printing-types.
Printing-type is meant in the bottom surface of the LGP that makes with jetting formation process and applies ink dot to form specific light hole.Could contact light hole because light must see through LGP, thus in this kind LGP reflection ray intensity a little less than.And, printing-ink be prone to take place in printing process to apply inhomogeneous and influence the dispersion effect of light.
Non-printing-type is meant with the transparent resin to be that raw material adopts jetting formation process to make, and promptly concavo-convex light hole is set to reach the purpose of diffusion light in the bottom surface of LGP with cutting or direct injection mode.Because incident ray can directly contact with concavo-convex light hole, therefore the light intensity of reflection is greater than the printing-type LGP.And this method for making does not relate to typography, thereby has to expand and penetrate good, the advantage of simple technology of effect.But the viscosity of molten resin can influence the homogeneity of LGP finished product when ejection formation.If molten resin viscosity when penetrating is higher, then molten resin around being transferred to die cavity before just curing, the LGP homogeneity that causes making is relatively poor.In addition, need corresponding large scale mould and injection molding equipment, can improve production cost undoubtedly if adopt ejection formation to make large-size light-conducting plate.
Therefore, be necessary to provide a kind of method for making of LGP, to reduce cost and to improve the product yield.
Summary of the invention
Below be the method for making that example is explained the LGP that a kind of technology is simple, with low cost with embodiment.
The method for making of this kind LGP comprises the steps: to process tabular preform with molten resin, cools off, and makes the flat board of preliminary dimension; Form liquid photoresist layer in this planar surface; Adopt exposure device to this photoresist layer exposure; Remove uncured photoresistance, form a plurality of convex site in this planar surface thus.
Compared with prior art; The method for making of the LGP of present technique scheme need not dispose large scale mould and injection molding equipment owing to adopt fusion method to process large-sized tabular preform, can reduce production costs greatly; And adopt lithography process to form the site; The shape of site and controllable size have advantages such as precision height, simple and fast, thereby improve product yield and production efficiency.
Description of drawings
Fig. 1 is the method for making process flow diagram of the LGP that provides of present technique scheme implementation example.
Fig. 2 adopts method for making molten resin, the cooling of the LGP that present technique scheme implementation example provides to make dull and stereotyped synoptic diagram.
Fig. 3 adopts the method for making of the LGP that present technique scheme implementation example provides to form the synoptic diagram of liquid photoresist layer in planar surface.
Fig. 4 adopts method for manufacturing light guide plate that present technique scheme implementation example the provides synoptic diagram to this liquid state photoresist layer exposure.
Fig. 5 is liquid photoresist layer shown in Figure 4 forms the convex site after making public a synoptic diagram.
Fig. 6 is the vertical view of the LGP that makes of the method for manufacturing light guide plate that adopts present technique scheme implementation example to provide.
Embodiment
The method for making of the LGP that the present technique scheme is provided below in conjunction with embodiment and accompanying drawing is elaborated.
Consult Fig. 1, the method for manufacturing light guide plate that present technique scheme implementation example provides may further comprise the steps:
Step 1: process tabular preform 50 with molten resin, cold pressing, make the flat board 100 of preliminary dimension.
In the present embodiment, dull and stereotyped 100 via following method acquisition.See also Fig. 2, at first processing unit (plant) 10 need be provided.Processing unit (plant) 10 comprises worktable 11, roller 12, heating arrangement 13 and cooling device 14.Worktable 11 has the loading end 111 that is used to carry resin, and it is used to carry resin and the follow-up preform that is formed from a resin is transferred to cooling device 14.Roller 12 is located at worktable 11 tops, and it can do elevating movement at the auxiliary relative loading end 111 down of driver (figure does not show), and in loading end 111, rolls back and forth.Heating arrangement 13 is located at loading end 111 belows with cooling device 14, and next-door neighbour's loading end 111.Heating arrangement 13 is used for loading end 111 is heated to the maintenance of back below the above heat decomposition temperature of resin heat distortion temperature constant temperature, so that follow-up through roller 12 roll extrusion molten resins making preform 50.Cooling device 14 is used to cool off preform 50, makes dull and stereotyped 100 so that it has predetermined size and dimension at normal temperatures.
The structure of processing unit (plant) 10 is not limited to present embodiment.Heating arrangement 13 can be located at loading end 111 belows, and links to each other with roller 12, is used to heat more than the following heat distortion temperature of heat decomposition temperature of roller to resin the back and makes it keep constant temperature.Cooling device 14 also can be located in the worktable 11, and it can be located at worktable 11 tops, also can be provided with separately, and commonly used having concurrently colded pressing and the dull and stereotyped sheeter of hot pressing function like material processing field.Accordingly, processing unit (plant) 10 can be two roller mills that field of materials adopts.
Said resin has higher light transmittance, and its material is optional from polymethacrylate, polycarbonate, polystyrene, methyl methacrylate/styrol copolymer, noncrystalline cyclic olefin polymer, polypropylene or tygon.Wherein, polymethacrylate can be the multipolymer that methyl methacrylate forms with methacrylate, the copolymerization of ethyl propylene acid esters respectively.In addition, this resin can contain auxiliary agents such as release agent, ultraviolet light absorber, pigment or anti-oxidant, is beneficial to the follow-up LGP of processing and has preferable optical property.
Secondly, start heating arrangement 13, make the temperature of loading end 111 rise to maintenance constant temperature in back below the above heat decomposition temperature of heat distortion temperature of resin, and mobile roller 12 is to the abundant position contacting of resin and make it and the distance of loading end 111 remains unchanged.Preferably, said temperature is the resin melt temperature.At this moment, resin is fusion, roller 12 capable of using thus roll extrusion molten resin in the plane that is parallel to loading end 111, thus make tabular preform 50 with high-flatness.
When the shearing force molten resin between the two rollers that utilize two roller mills, can obtain to adopt material processing field dull and stereotyped sheeter commonly used that it is pressed into the sheet material of preliminary dimension after resin heat is melted body, thereby obtain tabular preform 50.The pressure of this compressing tablet operation and time look resin property and decide.
At last, use cooling device 14 cooling preforms 50, make its cooling curing moulding, make flat board 100 thus with preliminary dimension.
See also Fig. 3, can adopt this area rubbing method commonly used or gunite should the liquid state photoresistance to be coated on dull and stereotyped 100 surface.This liquid state photoresistance is organic transparent negative photoresist, is the photoresistance of chlorine polystyrene like principal ingredient.In the present embodiment, with this area jetting system 60 commonly used liquid photoresistance is injected into dull and stereotyped 100 surface earlier, adopts cylinder 70 in being parallel to this surperficial plane, to roll back and forth then, thereby form photoresist layer 80 in this surface.The thickness of photoresist layer 80 is looked the thickness of the site that needs making and is decided.
Please, utilize a plurality of 90 pairs of photoresist layers 80 of exposure device that are parallel to photoresist layer 80 to make public in the present embodiment in the lump referring to Fig. 4 and Fig. 5.
In the present embodiment, exposure device 90 has a plurality of predetermined light holes 91 and condenser lens 92.Each predetermined light hole 91 is stepped, and it comprises accepting groove 911 and the through hole 912 that communicates with accepting groove 911.Wherein, contain light source 93 in the accepting groove 911.This light source 93 can be a uviol lamp.Contain condenser lens 92 in the through hole 912.Condenser lens 92 is used to assemble the ultraviolet ray of sending from light source 93, and is ultraviolet at the photoresist layer 80 surperficial spot sizes that form to change, thereby accurately controls the shape and the size of the site 110 of follow-up formation.
Except that the exposure device 90 that adopts present embodiment, also can adopt the light shield with pierced pattern commonly used, need adopt this moment additional light source to see through this pierced pattern irradiation photoresistance from the light shield top and photoresistance optionally made public with realization.
For raising the efficiency, can adopt a plurality of exposure devices 90 photoresist layer 80 in the parallel plane simultaneously to photoresist layer 80 exposures.Can form between each exposure device 90 greater than zero degree less than the angle of 180 degree with the density of network point 110, and can the photoresistance of photoresist layer 80 specified location solidified through switch light source 93 in dull and stereotyped 100 surfaces.In addition, thus can regulate the size that the size that is formed at the surperficial hot spot of photoresist layer 80 is regulated the site 110 of follow-up formation through regulating focus lamp 92 and the distance between the photoresist layer 80.Also can exposure device 90 be adjusted to the position that forms an angle with 80 parallel directions of photoresist layer with the shape that changes hot spot and size and then change the shape and the size of site 110.
For example, when adopting one during with the angled exposure device 90 of photoresist layer 80, can form size and become big gradually or diminish, shape becomes a plurality of sites of ellipse gradually from circle.When employing is mutually two exposure devices 90 of angle, and each exposure device 90 is with photoresist layer 80 when all angled, and the big I of the site that then forms is gradually changed to both sides by the centre, and its shape gradually becomes oval from circle.
Please consult Fig. 5 and Fig. 6 in the lump, because can crosslinking curing by the photoresistance 80b of irradiate light, therefore, adopt the LGP 200 that with photoresist layer 80 corresponding developer solutions its flush away can be obtained being formed with a plurality of convex site 110.
The method for manufacturing light guide plate of present embodiment adopts fusion method to process large-sized tabular preform; Need not dispose large scale mould and injection molding equipment; Can reduce production costs greatly, and adopt lithography process to form site, the shape of site and controllable size; Have advantages such as precision height, simple and fast, thereby improve product yield and production efficiency.
Claims (6)
1. the method for making of a LGP, it comprises the steps:
Process tabular preform with molten resin, cool off, make the flat board of preliminary dimension; Form liquid photoresist layer in this planar surface;
Adopt exposure device to this photoresist layer exposure; This exposure device has a plurality of predetermined light holes and condenser lens, and each predetermined light hole is stepped, comprises accepting groove and the through hole that communicates with accepting groove; Contain light source in this accepting groove; Each condenser lens is contained in the through hole of each predetermined light hole, and each condenser lens is used for assembling respectively the ultraviolet ray of sending from each light source, and this exposure device sees through the light-cured photoresist layer of this predetermined light hole;
Remove uncured photoresistance, form a plurality of convex site in this planar surface thus.
2. the method for making of LGP as claimed in claim 1 is characterized in that, the making of this tabular preform comprises with roller roll extrusion molten resin to tabular.
3. the method for making of LGP as claimed in claim 1 is characterized in that, the making of this tabular preform comprise molten resin obtain resin heat melt it is pressed into behind the body tabular.
4. the method for making of LGP as claimed in claim 1 is characterized in that, this forms liquid photoresist layer and comprises and adopt cylinder evenly to coat this planar surface by the liquid state photoresistance after should the liquid state photoresistance being injected into this planar surface with gunite.
5. the method for making of LGP as claimed in claim 1 is characterized in that, this exposure device becomes with this planar surface greater than the angle of zero degree less than 180 degree.
6. the method for making of LGP as claimed in claim 1 is characterized in that, this exposure device number is a plurality of, and each exposure device is mutually angle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200810305391A CN101738676B (en) | 2008-11-05 | 2008-11-05 | Manufacturing method of light guide plate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200810305391A CN101738676B (en) | 2008-11-05 | 2008-11-05 | Manufacturing method of light guide plate |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101738676A CN101738676A (en) | 2010-06-16 |
| CN101738676B true CN101738676B (en) | 2012-08-29 |
Family
ID=42462385
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200810305391A Expired - Fee Related CN101738676B (en) | 2008-11-05 | 2008-11-05 | Manufacturing method of light guide plate |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101738676B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108803252A (en) * | 2018-06-27 | 2018-11-13 | 合肥泰沃达智能装备有限公司 | A kind of light guide plate production and processing technology and its coating exposure sources |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102645698B (en) * | 2012-01-09 | 2016-03-30 | 京东方科技集团股份有限公司 | Light guide plate mesh point, method for manufacturing light guide plate and backlight module, display device |
| CN104345375A (en) * | 2013-07-25 | 2015-02-11 | 鸿富锦精密工业（深圳）有限公司 | Light guide board manufacturing method and light guide board |
| CN105093394A (en) * | 2015-08-19 | 2015-11-25 | 武汉华星光电技术有限公司 | Light guide plate and manufacturing method thereof |
| CN108803237A (en) * | 2018-06-08 | 2018-11-13 | 东莞市银泰丰光学科技有限公司 | A kind of processing unit (plant) and its processing method of glass light guide plate |
| CN108490745B (en) * | 2018-06-27 | 2020-12-22 | 合肥泰沃达智能装备有限公司 | Rotary ultraviolet exposure machine |
-
2008
- 2008-11-05 CN CN200810305391A patent/CN101738676B/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108803252A (en) * | 2018-06-27 | 2018-11-13 | 合肥泰沃达智能装备有限公司 | A kind of light guide plate production and processing technology and its coating exposure sources |
| CN108803252B (en) * | 2018-06-27 | 2020-10-16 | 合肥泰沃达智能装备有限公司 | Light guide plate production and processing technology and coating exposure equipment thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101738676A (en) | 2010-06-16 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101738676B (en) | Manufacturing method of light guide plate | |
| KR100425511B1 (en) | Apparatus and Method for Manufacturing light guide plate for plane light source unit | |
| Chang et al. | A roller embossing process for rapid fabrication of microlens arrays on glass substrates | |
| CN104175580B (en) | Transfer printing equipment and manufacturing method of light guide film | |
| CN101937115B (en) | Device for manufacturing light guide film | |
| JP5611445B2 (en) | Microlens manufacturing method and manufacturing apparatus | |
| CN101231462A (en) | Light scattering slice and preparation method thereof | |
| CN108445577A (en) | A kind of uniform light extraction light guide plate and preparation method thereof | |
| TWI335474B (en) | Mass manufacturing method of light guide plate | |
| CN110756986A (en) | Method and device for preparing micro-lens array by laser-induced forward transfer | |
| CN102343675A (en) | Light guide plate processing machine and light guide plate production technology | |
| CN101533127A (en) | Method of manufacturing optical waveguide for touch panel | |
| JP2024511071A (en) | Mini LED diffusion film, its manufacturing method and backlight | |
| JP2004258071A (en) | Optical component and method for manufacturing same, and image projection screen | |
| JP5672961B2 (en) | Molding method for plastic molded products | |
| CN1180924C (en) | Roll mold for continuous Fresnel lens producing process | |
| Yang et al. | Fabrication of microlens arrays using UV micro-stamping with soft roller and gas-pressurized platform | |
| CN105082541A (en) | 3D (three dimensional) printer and 3D printing system | |
| JP2009172794A (en) | Method for producing resin sheet | |
| CN101554761A (en) | Processing method of light guide plate of hot press molding liquid crystal display backlight module illuminating system | |
| TW201441035A (en) | Composite light guiding plate and method for manufacturing same | |
| TWI586518B (en) | Apparatus and method of manufacturing optical device with patterned micro-structure | |
| CN105058770A (en) | Process for quick hot stamping of polymer microstructure isothermal flat plate | |
| KR101550378B1 (en) | Glass surface forming method | |
| JP6651716B2 (en) | Method for manufacturing molded article and apparatus for producing molded article |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120829 Termination date: 20151105 |
|
| EXPY | Termination of patent right or utility model |