CN101737707B - Light diffusion sheet for back light module and manufacture method thereof - Google Patents
Light diffusion sheet for back light module and manufacture method thereof Download PDFInfo
- Publication number
- CN101737707B CN101737707B CN200810235232XA CN200810235232A CN101737707B CN 101737707 B CN101737707 B CN 101737707B CN 200810235232X A CN200810235232X A CN 200810235232XA CN 200810235232 A CN200810235232 A CN 200810235232A CN 101737707 B CN101737707 B CN 101737707B
- Authority
- CN
- China
- Prior art keywords
- substrate
- micro
- light diffusing
- diffusing sheet
- electroforming
- 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.)
- Active
Links
Images
Landscapes
- Optical Elements Other Than Lenses (AREA)
Abstract
The invention discloses a manufacture method of a light diffusion film for a back light module. The method comprises the following steps of: (1) preparing a fixing layer with stickiness on a side surface of a substrate; (2) distributing and fixing granules in a micro-nano-meter structure size on the surface of the substrate through the fixing layer; (3) using the substrate which is obtained in the step (2) and provided with a surface micro structure as an electroforming template, carrying out precise electroforming, and transferring the micro structure to an electroforming metal sheet; (4) using the metal electroforming sheet obtained in the step (3) as a stamping template, stamping the metal electroforming sheet on a light diffusion sheet material through hot stamping or ultraviolet stamping to obtain the light diffusion sheet. In the method, a micro lens structure is stamped on a transparent substrate by utilizing the micro-nano-meter stamping technology. The method is simple and convenient and rapid, reduces the manufacture cost of the diffusion sheet, is particularly suitable for manufacturing an ultrathin structure, can effectively reduce the thickness of a back light module and has good optical property.
Description
Technical field
The present invention relates to be used for the evenly module backlight of illumination, be specifically related to the preparation method of the optical diffusion film in the module backlight, be applicable to the backlight module of liquid crystal indicator, also be applicable to projection screen based on the light diffusing sheet structure.
Background technology
The liquid crystal indicator backlight lighting systems that adopt from the liquid crystal panel back side illuminaton have back lighting devices such as side light type, vertical-type more now.The module backlight of the side light type lighting system of using with notebook is example, and shown in accompanying drawing 1, it possesses: fluorescent tube 1 for semiconductor lighting or cold light source illumination, is wire as light source; Reflector plate 2; LGP 7, it is tabular to be square; Following optical diffusion film 8, it has transparency carrier 4, and the bottom has anti-binding material 3, and the top has diffusion layer 5; Prism louver film 6 is positioned at the downside of optical diffusion film 9.
The function that above-mentioned side light liquid crystal display module has is following: at first, fluorescent tube 1 penetrates light to LGP 7, and the microstructure directs that can receive LGP 7 end faces penetrates from its surface; Secondly, the light of being derived by LGP 2 gets into optical diffusion film 8 down, and is spread by optical diffusion film 8, is penetrated by its surface; And then, inject prism louver film 6 by the light of down optical diffusion film 8 outgoing, and via prism outwards to penetrate in nearly normal direction; Light by 6 outgoing of prism louver film gets into upward optical diffusion film 9 then, through getting into lcd segment 10 after the further even diffusedization.
LCD backlight shows that the optical diffusion film in the module possesses usually: transparent substrate layer 4 and light diffusion layer 5.Gluing layer 3 is the surperficial driving fit generation interference fringes for the back side that prevents optical diffusion film and LGP 7, causes puzzlement.
The major function of light diffusing sheet has two: first is for effectively utilizing image light to guarantee the screen high brightness, and light can restrictively exist zone diffusion and emission to estimated observer.Second function is that screen edge brightness partly is improved to reduce the inhomogeneities of brightness, and wherein the marginal portion of screen and screen center's part brightness disproportionation are disadvantageous with regard to the visual angle.
Common light diffusing sheet preparation method; First heat treatment injection molding; With main material for example methyl methacrylate (MMA), azo two isobutyls fine (AIBN), gather (methyl) acrylic acid methyl; The thermoplastic resin that gathers the polyester, Merlon, polyphenyl diene, polymethylpentene etc. of (methyl) acrylic monomers or condensate, polyethylene terephthaldehyde ester, the polypropylene terephthaldehyde ester etc. of (methyl) acrylic acid ethyl etc.; Or hardening resin class, clear glass class, crystalline ceramics class etc., through mixing fully or fusion, be overlying on film surface; It two is coating process (Chinese invention patent CN 101029940A); To mix plural spherical scattering particles and the non-spherical scattering particles of plural number; Material consists of glass, acrylic or organic polymer etc., utilizes technologies such as spraying, the coating of UV glue or printing to be engaged in substrate surface; It three is machining process (Chinese invention patent CN1734290A); On transferring roller, continuously change the approach of cutting tool; Form a plurality of microlens pattern on the transferring roller surface; Apply the contact adhesion step then,, contact bonding with resin basement membrane then and sclerosis absorbing energy and utilizing the resin material of energy-curable to be applied to the transferring roller surface.
Some major defects below these methods exist:
1) heat treatment injection molding process need is taken 4～8 hours, and make efficiency is low.
2) in the coating process,, the density of piling up of particle must be increased,, even light diffusion can't be reached fully because the material coating is uneven for improving the evenly effect of diffusion of optical diffusion film.Coating process also has a major defect to be, owing to diffusion barrier base material, adhesive, diffusion particle use different materials (like synthetic resin), therefore causes distortion or variable color (yellow) because of heat or ultraviolet ray etc. easily.When small diffusion particle and binder adaptation deficiency, also can cause intensity variation and light penetration to descend.
3) though machining process is more flexible, need high-accuracy machining equipment, cause production cost to improve and decrease in efficiency.
Therefore, guaranteeing under the optical characteristics and the prerequisite in service life of optical diffusion film, need seek a kind of preparation method of easy to process, optical diffusion film that make efficiency is high.
Summary of the invention
The object of the invention provides a kind of light diffusing sheet and preparation method thereof; Improvement through method; Reduce production costs; With the making of the high-quality light diffusing sheet of technology realization more easily, the light diffusing sheet of made is applicable to that LCD backlight shows module, also is applicable to the projection screen based on light diffusing sheet.
For achieving the above object; General plotting of the present invention is; Utilize the microparticle realization microlens array of arranging; Be transferred to hard metal material to the surface topography of microparticle through the method for electroforming then, the mode on plane impressed the transparent polymer macromolecular material, realize that the light diffusing sheet of large format is made with volume to volume or plane.
The technical scheme that the present invention adopts is: a kind of light diffusion sheet for back light module, comprise transparent substrate layer, and be provided with the diffusion layer with the substrate layer integrative-structure at a side surface of said substrate layer, said diffusion layer has the concave type macro-lens structure of distribution.
Perhaps, a kind of light diffusion sheet for back light module comprises transparent substrate layer, is compounded with a UV curing resin layer at a side surface of said substrate layer, and said UV curing resin layer has the concave type macro-lens structure of distribution.
In the technique scheme, described microlens structure is recessed hemispherical or other irregular concave shape; The microlens structure distribution is random distribution or ordered arrangement.
Described substrate layer can show as film-type, also can show as sheet profile.
For obtaining above-mentioned light diffusing sheet, the invention provides a kind of preparation method of light diffusion sheet for back light module, comprise the following steps:
(1) side surface at a substrate prepares the fixed bed with viscosity;
(2) particle of micro nano structure size arranged through said fixed bed be fixed in said substrate surface:
(3) substrate that has surface micro-structure that step (2) is obtained carries out precise electrotyping as the electroforming template, and micro-structural is transferred on the electroforming metal plate;
(4) the metal plating sheet that obtains with step (3) on hot padding or ultraviolet stamping to light diffusing sheet material, makes obtaining light diffusing sheet as impression block.
In the technique scheme, the fixed bed in the said step (1) obtains through evenly apply cohesive material at substrate surface; This cohesive material can be an organic polymer: perhaps, the fixed bed in the said step (1) obtains through substrate surface being softened processing (for example thermoplastic); Perhaps, also can be that fixed bed itself has viscosity.Of confirms that according to microparticle size and shape the particle bottom falls in the fixed bed, and top still outside fixed bed, forms the impression micro-structural.In the technique scheme, described impression mode can adopt the plane to plane or volume to volume impression.
In the technique scheme, in said step (1), baseplate material is the metal of surfacing, like nickel, stainless steel, chromium, also can be glass, silicon chip or organic polymer sheet material.
In said step [2], described microparticle can have difformities such as spheroidal, elliposoidal, cylindricality, granular materials can be silica, polystyrene (Polystyrene, PS), Merlon (polycarbonate), ceramic fine bead etc.
In said step [3], the precise electrotyping material for transfer is nickel or copper metal.
In the technique scheme, in the said step (4), adopt the hot padding method, said light diffusing sheet material is a transparent organic polymer material.
Perhaps, in the said step (4), adopt the ultraviolet stamping method, said light diffusing sheet material is made up of with the UV resin solidification layer that is compound in substrate layer one side surface the substrate layer of transparent organic polymer material.
Said macromolecular material can show as hardboard type or film-type for Merlon (PC:Polycarbonate), polyvinyl chloride (PVC:Polyrinyl Chloride), polyester (PET:Polyester), acrylic acid (PMMA:PolymethylMethacrylate), ultraviolet sensitivity glue or polyene (BOPP:Biaxial Or1ented Plypropylene) etc.
General plotting is identical with it, and a kind of preparation method of light diffusion sheet for back light module comprises the following steps:
(1) side surface at a substrate prepares the fixed bed with viscosity;
(2) particle of micro nano structure size is arranged through said fixed bed be fixed in said substrate surface;
(3) substrate that has surface micro-structure that step (2) is obtained is transferred on the ultraviolet glue figure on it through ultraviolet stamping to solidify, carry out precise electrotyping with the ultraviolet offset plate after solidifying as the electroforming template again, micro-structural is transferred on the electroforming metal plate;
(4) the metal plating sheet that obtains with step (3) is as impression block, makes obtaining light diffusing sheet through hot padding or ultraviolet stamping.
Because the utilization of technique scheme, the present invention compared with prior art has advantage as a kind of preparation method of utilizing the diffusion barrier (plate) of micro-nano imprint technology:
1. the present invention makes micro-structural as light diffusion layer through directly perhaps scribbling on the thin UV glue-line on the transparent base surface; Need not needs multiple materials such as a large amount of binders, diffusion particle as coating, printing process; Bonding insecure, the astigmatic effect decline of avoiding occurring that the expanded by heating coefficient does not cause on an equal basis, physical deformation etc. are particularly suitable for making extra-thin diffusion barrier.
2. micro-structural processing technology cheaply: the last microparticle cost of manufacture of microparticle motherboard is low; The size and dimension of micro-structural is by size, shape and of control of microparticle; Realize compact arranged microlens structure easily; Reach the soft comfortable sensation of light thereby can completely cut off dazzle, promote the performance of light diffusing sheet.
3. manufacture craft is convenient reliable: institute's proposition method is easy on the large format substrate, realize micro-nano structure; Ultraviolet illumination systems can be realized ultraviolet stamping technology; Both can directly on transparent base, process light diffusing sheet, and can also utilize the method for impression to make motherboard, carry out the impression of volume to volume after the motherboard electroforming is shifted; Thereby can effectively reduce the cost of manufacture of light diffusing sheet, improve its production efficiency.
4. the present invention is particularly suitable for making ultrathin structure, can effectively reduce the thickness of module backlight, and has the good optical performance.
Description of drawings
Fig. 1 is that the side light LCD backlight module that uses at present in the background technology uses sketch map.
Fig. 2-the 6th, the schematic flow sheet of the making light diffusing sheet of the embodiment of the invention one.
Fig. 7-the 8th, the embodiment of the invention two, another kind of method of making light diffusing sheet impression die.
Fig. 9-the 10th, the embodiment of the invention three, arrange and fixedly microparticle as the making sketch map of diffusion sheet imprint masters.
Figure 11 a is used for heat with the light diffusing sheet electrotyping in the embodiment of the invention four to roll the equipment sketch map to the roll extrusion seal.
Figure 11 b is the light diffusing sheet micro-structural sketch map that hot padding obtains through volume to volume in the embodiment of the invention four.
Figure 12 a is used for UV with the light diffusing sheet electrotyping in the embodiment of the invention five to roll the equipment sketch map to the roll extrusion seal.
Figure 12 b is the light diffusing sheet micro-structural sketch map that obtains through volume to volume UV ultraviolet stamping in the embodiment of the invention five.
Figure 13 is that the diffusion sheet surface is circle microlens structure sketch map in the embodiment of the invention five
Figure 14 is that the diffusion sheet surface is the ellipse-shaped microlenses structural representation in the embodiment of the invention six.
Wherein: 1, lighting source; 2, reflector plate; 3, anti-binding material; 4, optical diffusion film base material; 5, granule proliferation; 6, prism louver film; 7, LGP; 8, following optical diffusion film; 9, go up optical diffusion film; 10, lcd segment; 21, microparticle; 22, fixed bed 23, substrate; 31, crystal seed layer; 41, spill die; 51, convex die; 61, diffusion sheet; 71, poly dimethyl silane; 111, light diffusing sheet mother matrix; 112, light diffusing sheet base material; 113, volume is pressed drawing-inroller; 114, volume is pressed auxiliary wheel; 115, heater; 116, volume presses main wheel to send; 117, volume is pressed drawing-inroller; 118, drawing-inroller; 121, light diffusing sheet mother matrix; 122, light diffusing sheet base material; 123, volume is pressed drawing-inroller; 124, volume is pressed auxiliary wheel; 125, UV lamp; 126, volume presses main wheel to send; 127, volume is pressed drawing-inroller; 128, drawing-inroller; 129, UV glue container; 1210, UV solidifies glue; 1211, glue coating wheel.
The specific embodiment
Below in conjunction with accompanying drawing and embodiment the present invention is further described:
Embodiment one: shown in accompanying drawing 2～6, a kind of module backlight is with the preparation method schematic flow sheet of diffusion sheet.The processing procedure of impression die is shown in accompanying drawing 2～5.At first in substrate 23, apply one deck fixed bed 22, with microparticle 21 arrange with fixed bed on and fixing.Base material 23 can be the metal of surfacing, like nickel, stainless steel, chromium, also can be glass, silicon chip or organic polymer sheet material.Fixed bed is to have to cohere or the fixing material of microparticle position capability.Microparticle can be for having rule such as spheroidal, elliposoidal, cylindricality or irregularly shaped, material can be silica, polystyrene (Polystyrene, PS), Merlon (polycarbonate), ceramic fine bead etc.Then as shown in Figure 3, with microparticle 21 surface metalations, to plant and attach a crystal seed layer 31, seed layer material 31 comprises nickel (Ni), copper (Cu) or silver (Ag).The electroforming of carrying out die as shown in Figure 4 again, with the die 41 of electroforming mode moulding, electroforming material such as nickel (Ni), nickel bore (NiCo) alloy, ferronickel (NiFe) alloy, nickel carborundum (NiSiC) etc.The die 41 that obtains among Fig. 4 is spill, and die 41 is once cast again, just obtains the impression die 51 of convex.Have on the die 51 in the concavo-convex opposite shape of the required micro-structural of diffusion sheet, can be used in the impression light diffusing sheet, promptly accomplish the manufacturing process of die.
Impression die 51 removes to impress transparent material 61, on transparent material 61 surfaces, impresses out spill, forms light diffusion layer.The light diffusing sheet that obtains through as above processing procedure has advantage frivolous, even diffused, and cost of manufacture is low, is convenient to make the light diffusion sheet for back light module of wide format.
Embodiment two: shown in accompanying drawing 7～8, and the preparation method of another kind of light diffusing sheet impression die.Employing has close-burning material and arranges bead as fixed bed, causes bead to come off during electroforming easily, causes die upper surface micro-structural defectiveness.For avoiding this situation, at first use poly dimethyl silane (Polydimethylsiloxane, PDMS) 71 mother matrix surface micro-structures that microparticle is arranged duplicate transfer; As shown in Figure 7; Be used for electroforming then, but ensuing flow process reference implementation example one, the impression die 51 that obtains having convex.
Embodiment three: shown in accompanying drawing 9～10.For further improving the stability of microparticle motherboard when the electroforming reprint, guarantee the product yield.Cohere film as the fixed bed except employing, can also adopt the method for softening fixed bed 22 materials, microparticle is embedded in the fixed bed 22, shown in Fig. 9～10.At substrate 23 surface applied thin films.Film is the Merlon of carrene dissolving, and the speed when applied thickness can be by concentration of ordinary dissolution and spin coating determined with the time.By the time behind the surperficial natural air drying, the microparticle and heat substrate of arranging.To aforesaid organic admixture, be heated to about 240 ℃, continue 5 minutes; The organic mixture thin layer is softening; Microparticle is sunk by self gravitation and to fixed film, (also can apply external force a little), guarantees that the microparticle layer that can be fixed is fixing, and is not sunk in the fixed bed fully.After the band mixture layer solidified, microparticle was completely fixed, and just can obtain final diffusion sheet impression die according to the flow process of the embodiment of the invention one or example two.
Embodiment four: after obtaining impressing die through the electroforming reprint, can use the method for stamping of volume to volume efficiently to impress optical diffusion film apace, be the sketch map of hot padding referring to accompanying drawing 11a～11b.Specifically comprise the following steps:
[1] electroforming metal sheet 111 is wrapped on the impression runner 116, sees Figure 11 a.The film substrate 112 of printing opacity gets into impression wheel 114 and 116 through drawing-inroller 113.Impression wheel 114,116,117 is exerted pressure through hydraulic-driven, and heater 115 is treated and pressed material to heat simultaneously, and temperature can reach 250 ℃.Behind the impression of completion to base material 111, drawing-inroller 118 is seen base material 112 off impression mechanism and is obtained diffusion barrier.
[2] film substrate 112 can film-type PC, PET polyester film, PET mould release membrance, thickness can be specifications such as 12um～125um, used width is 20mm to 2000mm.Accomplish diffusion barrier structure behind the impression shown in Figure 11 b, one side at the light diffusion layer of having realized of film substrate.
Embodiment five: after obtaining impressing die through the electroforming reprint, can use the method for stamping of volume to volume efficiently to impress optical diffusion film apace, be the sketch map of hot padding referring to accompanying drawing 12a～12b.Specifically comprise the following steps:
[1] electroforming metal sheet 121 is wrapped on the impression runner 126, sees Figure 12 a.The film substrate 122 of printing opacity gets into UV gluing container 129 through drawing-inroller, on the glue coating wheel 1210 mesh is arranged, and UV glue 1211 evenly is applied to substrate surface, and base material gets into impression wheel 124 and 126 through drawing-inroller 13 then.Impression wheel 124,126,127 is exerted pressure through hydraulic-driven, and 125 pairs of UV glue of heater carry out irradiation simultaneously, and ultraviolet glue was solidified in the several seconds, and the micro-structural on the electroforming metal sheet is transferred to the UV glue-line.Behind the impression of completion to base material 121, drawing-inroller 128 is seen base material 122 off impression mechanism and is obtained diffusion barrier.
[2] film substrate 122 can film-type PC, PET polyester film, PET mould release membrance, thickness can be specifications such as 12um～125um, used width is 20mm to 2000mm.Diffusion barrier structure behind the completion impression has realized light diffusion layer on the thin UV glue-line 1211 in one side of film substrate shown in Figure 12 b, the UV bondline thickness is at tens of microns.
Embodiment six: the light diffusing sheet surface micro-structure that the method for utilizing the present invention to propose is made is spherical for semicircle, shown in accompanying drawing 13.The surface micro-structure that semicircle is spherical can be realized the even diffusion of incident ray in all directions.The semi-round ball diameter is between several microns to hundred microns, and the depth of indentation maximum can reach crown radius.
Embodiment seven: the light diffusing sheet surface micro-structure that the method for utilizing the present invention to propose is made can be that semiellipse is spherical, shown in accompanying drawing 14.The spherical micro-structural of the semiellipse of arranging in the same way can realize incident ray different in ellipsoid major and minor axis direction diffusion angle, promptly realizes so-called directed diffusion.At short-axis direction than bigger angle of flare being arranged at long axis direction.Diffusion sheet with this micro-structural can be used in the display device that needs the compression visual field.The major and minor axis length of semielliptical is between several microns to hundred microns, and maximum depth of indentation depends on half length of minor axis.
Claims (6)
1. the preparation method of a light diffusion sheet for back light module is characterized in that, comprises the following steps:
(1) side surface at a substrate prepares the fixed bed with viscosity;
(2) particle of micro nano structure size is arranged through said fixed bed be fixed in said substrate surface, particle size range is at 10～200 microns;
(3) substrate that has surface micro-structure that step (2) is obtained carries out precise electrotyping as the electroforming template, and micro-structural is transferred on the electroforming metal plate;
(4) the metal plating sheet that obtains with step (3) on hot padding or ultraviolet stamping to light diffusing sheet material, makes obtaining light diffusing sheet as impression block.
2. the preparation method of light diffusing sheet according to claim 1 is characterized in that: the fixed bed in the said step (1) obtains through evenly apply cohesive material at substrate surface.
3. the preparation method of light diffusing sheet according to claim 1 is characterized in that: the fixed bed in the said step (1) obtains through substrate surface being softened handle.
4. the preparation method of light diffusing sheet according to claim 1 is characterized in that: in the said step (4), adopt the hot padding method, said light diffusing sheet material is a transparent organic polymer material.
5. the preparation method of light diffusing sheet according to claim 1; It is characterized in that: in the said step (4); Adopt the ultraviolet stamping method, said light diffusing sheet material is made up of with the UV resin solidification layer that is compound in substrate layer one side surface the substrate layer of transparent organic polymer material.
6. the preparation method of a light diffusion sheet for back light module is characterized in that, comprises the following steps:
(1) side surface at a substrate prepares the fixed bed with viscosity;
(2) particle of micro nano structure size is arranged through said fixed bed be fixed in said substrate surface, particle size range is at 10～200 microns;
(3) substrate that has surface micro-structure that step (2) is obtained is transferred on the ultraviolet glue figure on it through ultraviolet stamping to solidify, carry out precise electrotyping with the ultraviolet offset plate after solidifying as the electroforming template again, micro-structural is transferred on the electroforming metal plate;
(4) the metal plating sheet that obtains with step (3) is as impression block, makes obtaining light diffusing sheet through hot padding or ultraviolet stamping.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200810235232XA CN101737707B (en) | 2008-11-12 | 2008-11-12 | Light diffusion sheet for back light module and manufacture method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200810235232XA CN101737707B (en) | 2008-11-12 | 2008-11-12 | Light diffusion sheet for back light module and manufacture method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101737707A CN101737707A (en) | 2010-06-16 |
| CN101737707B true CN101737707B (en) | 2012-01-11 |
Family
ID=42461556
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200810235232XA Active CN101737707B (en) | 2008-11-12 | 2008-11-12 | Light diffusion sheet for back light module and manufacture method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101737707B (en) |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101937627A (en) * | 2010-06-21 | 2011-01-05 | 应骏 | Display panel and image correction method thereof |
| CN103775970A (en) * | 2012-10-23 | 2014-05-07 | 京东方科技集团股份有限公司 | Diffuser plate, manufacturing method thereof and backlight module |
| CN103672615A (en) * | 2013-12-13 | 2014-03-26 | 中航华东光电有限公司 | Backlight module for imaging projection system |
| CN108333650B (en) * | 2018-01-30 | 2020-06-02 | 苏州大学 | Micro-lens array system and preparation method thereof |
| CN109934157A (en) * | 2019-03-11 | 2019-06-25 | 深圳阜时科技有限公司 | A kind of backlight module, display device and electronic equipment |
| CN110941136A (en) * | 2020-01-03 | 2020-03-31 | 深圳市锐思华创技术有限公司 | Laser projection system applying directional diffusion sheet |
| CN113376900A (en) * | 2021-01-25 | 2021-09-10 | 深圳市隆利科技股份有限公司 | Straight following formula Mini-LED backlight unit that light-emitting is even |
| CN113189840A (en) * | 2021-04-16 | 2021-07-30 | 深圳先进技术研究院 | Micro-nano structure manufacturing method and micro-nano structure manufacturing device |
| CN113835264A (en) * | 2021-09-14 | 2021-12-24 | 永州市福源光学技术有限公司 | Curved surface backlight module and preparation method thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1942788A (en) * | 2004-02-26 | 2007-04-04 | 他喜龙株式会社 | Light diffusing sheet, and backlight unit using this light diffusing sheet |
| CN100357092C (en) * | 2005-10-20 | 2007-12-26 | 南京大学 | Method for preparing micron planar bravais lattice or chain lattice on polymer surface |
| CN101231462A (en) * | 2008-02-27 | 2008-07-30 | 苏州大学 | Light scattering slice and preparation method thereof |
-
2008
- 2008-11-12 CN CN200810235232XA patent/CN101737707B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1942788A (en) * | 2004-02-26 | 2007-04-04 | 他喜龙株式会社 | Light diffusing sheet, and backlight unit using this light diffusing sheet |
| CN100357092C (en) * | 2005-10-20 | 2007-12-26 | 南京大学 | Method for preparing micron planar bravais lattice or chain lattice on polymer surface |
| CN101231462A (en) * | 2008-02-27 | 2008-07-30 | 苏州大学 | Light scattering slice and preparation method thereof |
Non-Patent Citations (1)
| Title |
|---|
| JP特开2001-80215A 2001.03.27 |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101737707A (en) | 2010-06-16 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101737707B (en) | Light diffusion sheet for back light module and manufacture method thereof | |
| CN101231462A (en) | Light scattering slice and preparation method thereof | |
| JP4814946B2 (en) | Light diffusion sheet for backlight unit and manufacturing method thereof | |
| CN100578264C (en) | Prism-integrated light diffusion plate and method for manufacturing the same | |
| JP5868393B2 (en) | Nanoimprint mold and method of manufacturing curved body | |
| CN104991416B (en) | Hot stamping method of two-dimensional periodic micro-nano structure based on optical disk | |
| CN106154367B (en) | Light diffusion sheet | |
| CN101006307A (en) | Direct backlight device | |
| CN101749599A (en) | Direct backlight device | |
| US20090316417A1 (en) | Light-redirecting article | |
| KR20080055840A (en) | Directly downward type backlight device | |
| CN1231032A (en) | Retroreflective sheeting with embedded retroreflective elements in binder layer with shape memory and method for forming the same | |
| JP2007066699A (en) | Light guide plate and manufacturing method of the light guide plate | |
| JP2008218207A (en) | Light guide plate, composite optical sheet, and surface light source | |
| JP4670669B2 (en) | Composite optical component and manufacturing method thereof | |
| KR20120036293A (en) | Back light guide plate and manufacturing method for the same | |
| TW201518780A (en) | Method for producing an optical diffuser film | |
| TWI417577B (en) | Light transfer plate with light structure and light guide plate | |
| JP2006065302A (en) | Antireflection structure and optical member having the same | |
| JP4714805B2 (en) | Microchip | |
| CN100401158C (en) | High molecular optical components with mini-pattern and method for manufacturing same | |
| KR20070120230A (en) | Method of manufacturing diffuser sheet | |
| TW200811541A (en) | Producing method of diffusion films and backlights in the producing method thereof | |
| JP5515311B2 (en) | Manufacturing method of optical sheet | |
| KR20110051532A (en) | High luminance diffuser |
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 |