CN102079899A - 导光油墨及其制备方法和使用方法 - Google Patents
导光油墨及其制备方法和使用方法 Download PDFInfo
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- CN102079899A CN102079899A CN2009102415770A CN200910241577A CN102079899A CN 102079899 A CN102079899 A CN 102079899A CN 2009102415770 A CN2009102415770 A CN 2009102415770A CN 200910241577 A CN200910241577 A CN 200910241577A CN 102079899 A CN102079899 A CN 102079899A
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- light guide
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- 229940043265 methyl isobutyl ketone Drugs 0.000 claims description 6
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- IEQIEDJGQAUEQZ-UHFFFAOYSA-N phthalocyanine Chemical compound N1C(N=C2C3=CC=CC=C3C(N=C3C4=CC=CC=C4C(=N4)N3)=N2)=C(C=CC=C2)C2=C1N=C1C2=CC=CC=C2C4=N1 IEQIEDJGQAUEQZ-UHFFFAOYSA-N 0.000 claims description 6
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- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 claims description 5
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- 239000000178 monomer Substances 0.000 claims description 5
- XDTMQSROBMDMFD-UHFFFAOYSA-N Cyclohexane Chemical compound C1CCCCC1 XDTMQSROBMDMFD-UHFFFAOYSA-N 0.000 claims description 4
- LLHKCFNBLRBOGN-UHFFFAOYSA-N propylene glycol methyl ether acetate Chemical compound COCC(C)OC(C)=O LLHKCFNBLRBOGN-UHFFFAOYSA-N 0.000 claims description 4
- ARXJGSRGQADJSQ-UHFFFAOYSA-N 1-methoxypropan-2-ol Chemical compound COCC(C)O ARXJGSRGQADJSQ-UHFFFAOYSA-N 0.000 claims description 3
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- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 3
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- 239000006096 absorbing agent Substances 0.000 claims description 3
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- 239000012952 cationic photoinitiator Substances 0.000 claims description 3
- JHIVVAPYMSGYDF-UHFFFAOYSA-N cyclohexanone Chemical compound O=C1CCCCC1 JHIVVAPYMSGYDF-UHFFFAOYSA-N 0.000 claims description 3
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- MTHSVFCYNBDYFN-UHFFFAOYSA-N diethylene glycol Chemical compound OCCOCCO MTHSVFCYNBDYFN-UHFFFAOYSA-N 0.000 claims description 3
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- LNEPOXFFQSENCJ-UHFFFAOYSA-N haloperidol Chemical compound C1CC(O)(C=2C=CC(Cl)=CC=2)CCN1CCCC(=O)C1=CC=C(F)C=C1 LNEPOXFFQSENCJ-UHFFFAOYSA-N 0.000 claims description 3
- WGCNASOHLSPBMP-UHFFFAOYSA-N hydroxyacetaldehyde Natural products OCC=O WGCNASOHLSPBMP-UHFFFAOYSA-N 0.000 claims description 3
- 239000003112 inhibitor Substances 0.000 claims description 3
- 239000000395 magnesium oxide Substances 0.000 claims description 3
- CPLXHLVBOLITMK-UHFFFAOYSA-N magnesium oxide Inorganic materials [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 claims description 3
- AXZKOIWUVFPNLO-UHFFFAOYSA-N magnesium;oxygen(2-) Chemical compound [O-2].[Mg+2] AXZKOIWUVFPNLO-UHFFFAOYSA-N 0.000 claims description 3
- 230000003647 oxidation Effects 0.000 claims description 3
- 238000007254 oxidation reaction Methods 0.000 claims description 3
- 229920000728 polyester Polymers 0.000 claims description 3
- KCTAWXVAICEBSD-UHFFFAOYSA-N prop-2-enoyloxy prop-2-eneperoxoate Chemical compound C=CC(=O)OOOC(=O)C=C KCTAWXVAICEBSD-UHFFFAOYSA-N 0.000 claims description 3
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- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 3
- 239000011630 iodine Substances 0.000 description 3
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- HEDRZPFGACZZDS-UHFFFAOYSA-N Chloroform Chemical compound ClC(Cl)Cl HEDRZPFGACZZDS-UHFFFAOYSA-N 0.000 description 2
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- YRHRIQCWCFGUEQ-UHFFFAOYSA-N thioxanthen-9-one Chemical compound C1=CC=C2C(=O)C3=CC=CC=C3SC2=C1 YRHRIQCWCFGUEQ-UHFFFAOYSA-N 0.000 description 2
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- OSWFIVFLDKOXQC-UHFFFAOYSA-N 4-(3-methoxyphenyl)aniline Chemical compound COC1=CC=CC(C=2C=CC(N)=CC=2)=C1 OSWFIVFLDKOXQC-UHFFFAOYSA-N 0.000 description 1
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- MKYBYDHXWVHEJW-UHFFFAOYSA-N N-[1-oxo-1-(2,4,6,7-tetrahydrotriazolo[4,5-c]pyridin-5-yl)propan-2-yl]-2-[[3-(trifluoromethoxy)phenyl]methylamino]pyrimidine-5-carboxamide Chemical compound O=C(C(C)NC(=O)C=1C=NC(=NC=1)NCC1=CC(=CC=C1)OC(F)(F)F)N1CC2=C(CC1)NN=N2 MKYBYDHXWVHEJW-UHFFFAOYSA-N 0.000 description 1
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- 230000001070 adhesive effect Effects 0.000 description 1
- 150000001338 aliphatic hydrocarbons Chemical class 0.000 description 1
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- RWCCWEUUXYIKHB-UHFFFAOYSA-N benzophenone Chemical compound C=1C=CC=CC=1C(=O)C1=CC=CC=C1 RWCCWEUUXYIKHB-UHFFFAOYSA-N 0.000 description 1
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- 125000002091 cationic group Chemical group 0.000 description 1
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- SQEHCNOBYLQFTG-UHFFFAOYSA-M lithium;thiophene-2-carboxylate Chemical compound [Li+].[O-]C(=O)C1=CC=CS1 SQEHCNOBYLQFTG-UHFFFAOYSA-M 0.000 description 1
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- YCWSUKQGVSGXJO-NTUHNPAUSA-N nifuroxazide Chemical group C1=CC(O)=CC=C1C(=O)N\N=C\C1=CC=C([N+]([O-])=O)O1 YCWSUKQGVSGXJO-NTUHNPAUSA-N 0.000 description 1
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- 125000000101 thioether group Chemical group 0.000 description 1
- 238000005303 weighing Methods 0.000 description 1
Classifications
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- G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
- G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
- G02B6/0033—Means for improving the coupling-out of light from the light guide
- G02B6/0035—Means for improving the coupling-out of light from the light guide provided on the surface of the light guide or in the bulk of it
- G02B6/004—Scattering dots or dot-like elements, e.g. microbeads, scattering particles, nanoparticles
- G02B6/0041—Scattering dots or dot-like elements, e.g. microbeads, scattering particles, nanoparticles provided in the bulk of the light guide
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D11/00—Inks
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- C09D11/03—Printing inks characterised by features other than the chemical nature of the binder
- C09D11/037—Printing inks characterised by features other than the chemical nature of the binder characterised by the pigment
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D11/00—Inks
- C09D11/02—Printing inks
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
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- C09D11/104—Polyesters
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D11/00—Inks
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
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- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
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- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
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- C08K3/22—Oxides; Hydroxides of metals
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
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- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Materials Engineering (AREA)
- Wood Science & Technology (AREA)
- Organic Chemistry (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Nanotechnology (AREA)
- Manufacturing & Machinery (AREA)
- Dispersion Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Inks, Pencil-Leads, Or Crayons (AREA)
Abstract
本发明提供一种导光油墨及其制备方法和使用方法,导光油墨包括如下重量份的组分:2-25重量份的散射粒子;10-50重量份的树脂;0.01-0.5重量份的颜料;20-75重量份的溶剂;0-8.5重量份的光引发剂;以及0.01-3.5重量份的添加剂。本发明由于采用UV固化工艺或在热固化工艺时采用固化温度低的材料,因此本发明的固化温度低于导光板变形温度,防止了导光板变形;另外,通过组分的合理搭配,合理的颜料的组合,减少或避免了色偏问题,提高了液晶显示器的显示品质。
Description
技术领域
本发明涉及油墨,尤其涉及用于液晶显示器背光模组的导光板的导光油墨及其制备方法和使用方法。
背景技术
液晶显示器由液晶面板和背光模组等构成,由于液晶显示器为一种非自发光显示装置,因此需要设置背光模组来提供光源。
绝大多数的背光模组中采用导光板将从背光源射出的光线均匀地入射至液晶显示器的液晶面板。
导光板的背面,通过印刷,或在导光板成形时通过化学蚀刻法(Etching)、精密机械刻画法(V-cut)、光微影法(Stamper)及内分散法形成由油墨构成的图案。当光线照射到导光板背面的油墨图案时发生漫反射,将光源的线光源变成照射整个液晶面板的面光源。
目前导光板的材质主要有聚甲基丙烯酸甲酯树脂(PMMA)和环烯烃聚合物树脂(COP),它们的主要特性都是表面极性低、透过率高、耐候性好,且比重低;但都耐热性较差。一般PMMA导光板的变形温度为90度左右。
因此,要求油墨固化成图案时,温度要低于导光板的变形温度。且避免固化时发生色偏,影响液晶显示器的显示色泽。
发明内容
本发明的第一目的是提供一种导光油墨及其制备方法和使用方法,用以解决现有技术中油墨固化时发生色偏的缺陷,实现减少或防止出现色偏,使其不影响液晶显示器的显示色泽,提高显示品质。
本发明的第二目的是提供导光油墨及其制备方法和使用方法,用以解决导光板在导光油墨固化时变形的问题。
本发明实施例提供一种导光油墨,包括如下重量份的组分:
2-25重量份的散射粒子;10-50重量份的树脂;0.01-0.5重量份的颜料;20-75重量份的溶剂;0-8.5重量份的光引发剂;以及0.01-3.5重量份的添加剂。
上述的导光油墨,其中所述散射粒子为二氧化钛、硫酸钡、氧化镁、氧化硅、氧化锌、锌钡白或氧化锆。
上述的导光油墨,其中所述散射粒子的粒径为40-400nm。
上述的导光油墨,其中所述颜料为红颜料、绿颜料、蓝颜料、紫颜料或黑颜料的两种以上的混合物,用于在导光油墨固化黄变时,平衡光色。
上述所述的导光油墨,其中所述红颜料为P.R.122、P.R.123、P.R.177、P.R.179、P.R.190、P.R.202,P.R.210、P.R.224、P.R.254、P.R.255、P.R.264、P.R.270或P.R.272;所述绿颜料为P.G.37、P.G.36或P.G.7;所述蓝颜料为P.B.15、P.B.15:3、P.B.15:6、P.B.15:4、P.B.1、P.B.2、P.B.22、P.B.16、P.B.60或P.B.66;所述紫颜料为P.V.32、P.V.36、P.V.38、P.V.39、P.V.23、P.V.9或P.V.1;所述黑颜料为C.I.1或C.I.7。
上述的导光油墨,其中所述树脂为乙烯性不饱和单体。
上述的导光油墨,其中所述乙烯性不饱和单体为丙烯酸酯、聚酯丙烯酸酯齐聚物、环氧丙烯酸酯或环氧树脂。
上述的导光油墨,其中所述树脂为热固树脂或热塑树脂。
上述的导光油墨,其中所述添加剂为分散剂、流平剂、润湿剂、附着促进剂、防氧化剂、紫外线吸收剂、防絮凝剂、消泡剂和稳定剂之一或其组合。
上述的导光油墨,其中所述溶剂为:环己酮、脂肪醇、乙二醇醚、乙酸乙酯、甲乙酮、甲基异丁基酮、单甲基醚乙二醇酯、γ-丁内酯、丙酸-3-乙醚乙酯、丁基卡必醇、丁基卡必醇醋酸酯、丙二醇单甲基醚、丙二醇单甲基醚醋酸酯、环己烷、二甲苯和异丙醇其中之一或者两种以上组合。
上述的导光油墨,其中所述光引发剂是自由基型光引发剂和阳离子型光引发剂中的任何一种,或两种以上的混合物。
本发明实施例提供一种导光油墨的制备方法,包括:
步骤1、从20-75重量份的溶剂中取出比例为5%~50%加入到10-50重量份的树脂中,均匀混合,制备树脂溶液;
步骤2、将2-25重量份的散射粒子和0.01-0.5重量份的颜料加入所述树脂溶液中,采用包括搅拌的方式进行预分散,制备预分散溶液;
步骤3、将预分散溶液在三辊机上进行分散,得到具有40-400nm粒径分布的散射粒子分散液;
步骤4、在所述散射粒子分散液内添加0-8.5重量份的光引发剂、剩余溶剂及0.01-3.5重量份的添加剂,采用包括搅拌的方式将其均匀混合即制得导光油墨。
上述导光油墨的使用方法,包括:
将导光油墨涂布在导光板的背面,在40-80度温度下进行热固化0.5h~2h,或进行紫外固化得到油墨图案。
本发明导光油墨及其制备方法和使用方法,由于采用UV固化工艺或在热固化工艺时采用固化温度低的材料,因此本发明的固化温度低于导光板变形温度,防止了导光板变形;另外,通过组分的合理搭配,合理的颜料的组合,减少或避免了色偏问题,提高了液晶显示器的显示品质。
具体实施方式
本发明的导光油墨包括:2-25重量份的散射粒子、10-50重量份的树脂、0.01-0.5重量份的颜料、20-75重量份的溶剂、0-8.5重量份的光引发剂以及0.01-3.5重量份的添加剂。
其中散射粒子的材料的特性决定导光油墨的折射率,折射率太低,光散射性较弱,不能起到匀光效果;而折射率太高,散射性过强,易造成光线损失。粒子粒度过小,难使光线散射,降低导光板亮度;粒度过大,易产生背反射光损失,也导致亮度降低。本发明中,采用二氧化钛、硫酸钡、氧化镁、氧化硅、氧化锌、锌钡白或氧化锆作为散射粒子,且散射粒子的粒径为40-400nm。
本发明中,树脂可以采用乙烯性不饱和单体,例如:丙烯酸酯、聚酯丙烯酸酯齐聚物、环氧丙烯酸酯或环氧树脂等;以及热固树脂或热塑树脂。通过热固化或紫外线固化(根据树脂的性质选择不同固化方法),能够与导光板的材料有很好的附着力,且固化温度大约在50-80度,低于导光板材料的热变形温度(90度)。
在本发明的导光油墨中,颜料的加入是为减少背光源组件可能产生的色偏。由于导光油墨固化时会发生黄变而导致来自背光源的光在某一波段被吸收,通过加入微量纳米级的颜料来吸收其他波段的光以平衡背光源射出的光线的光色。本发明所采用的颜料为红颜料、绿颜料、蓝颜料、紫颜料或黑颜料中两种以上的混合物,根据调色原理,以实现黄变补偿为混合原则。
具体为:红颜料为P.R.122、P.R.123、P.R.177、P.R.179、P.R.190、P.R.202、P.R.210、P.R.224、P.R.254、P.R.255、P.R.264、P.R.270、P.R.272或P.R.122;绿颜料为P.G.37、P.G.36或P.G.7等;蓝颜料为P.B.15、P.B.15:3、P.B.15:6、P.B.15:4、P.B.1、P.B.2、P.B.22、P.B.16、P.B.60或P.B.66等;紫颜料为P.V.32、P.V.36、P.V.38、P.V.39、P.V.23、P.V.9或P.V.1等;黑颜料为C.I.1或C.I.7等。
本发明的溶剂用于溶解导光油墨内的各种体系组分,使其能够达到均匀混合并完全溶解。所用的溶剂为酸性溶剂,如甲酸、乙酸以及氯仿等;碱性溶剂,如酮、酯、醚以及芳香烃等;中性溶剂,如脂肪烃、环烷烃类化合物以及芳香烃等。具体举例可以为:脂肪醇、乙二醇醚、乙酸乙酯、甲乙酮、甲基异丁基酮、单甲基醚乙二醇酯、γ-丁内酯、丙酸-3-乙醚乙酯、丁基卡必醇、丁基卡必醇醋酸酯、丙二醇单甲基醚、丙二醇单甲基醚醋酸酯、环己烷、二甲苯、异丙醇。其中优选为环己酮、丙二醇单甲基醚醋酸酯、环己烷、二甲苯、丁基卡必醇、丁基卡必醇醋酸酯、丙酸-3-乙醚乙酯和γ-丁内酯其中之一或者两种以上组合。
本发明的光引发剂用于产生可引发聚合的自由基或离子。光引发剂可以是自由基型光引发剂和阳离子型光引发剂中的任何一种或两种以上组合使用。具体的光引发剂可包括:肟酯类光引发剂、α-胺基酮类光引发剂、苯乙酮系光引发剂、酰基膦氧化物、芳香酮类光引发剂、芳香硫鎓盐、碘鎓盐或茂铁盐,或上述光引发剂的组合。可选用的苯乙酮系光引发剂包括:分子中含吗啉三级氨基和硫醚基的含硫苯乙酮系光引发剂,该含硫苯乙酮系光引发剂与硫杂蒽酮复合使用具有协同引发效果;可选用的芳香酮类光引发剂包括:2-苯基苄-2-二甲基胺-1-(4-吗啉苄苯基)丁酮,二苯甲酮及其衍生物,邻苯甲酰苯甲酸甲酯、硫杂蒽酮等;此外,还可选用小分子鎓盐类、茂铁盐类光引发剂,如:芳香硫鎓盐(如产品型号为UVI-6976、UVI-6992等的芳香硫鎓盐),碘鎓盐(如产品型号为IRGACURE 250的碘鎓盐等),三苯基硫鎓盐、二芳基碘鎓盐、η6-异丙苯茂铁氧化盐、η6-芘茂铁氧化盐等;大分子光引发剂,如:含有长链烷基、烷氧基、酯基的阳离子鎓盐,含有聚氨酯基团的阳离子,含有多芳环的阳离子等。
本发明的添加剂为表面活性剂、流平剂、润湿剂、附着促进剂、防氧化剂、紫外线吸收剂、防絮凝剂、消泡剂和稳定剂之一或其组合。
一、导光油墨的制备实施例:
本发明油墨的制备方法包括:
步骤1、从20-75重量份的溶剂中取出比例为5%~50%加入到10-50重量份的树脂中,均匀混合,制备树脂溶液;
步骤2、将2-25重量份的散射粒子和0.01-0.5重量份的颜料加入所述树脂溶液中,采用包括搅拌等方式进行预分散,制备预分散溶液;
步骤3、将预分散溶液在三辊机上进行分散,得到具有40-400nm粒径分布的散射粒子分散液;
步骤4、在所述散射粒子分散液内添加0-8.5重量份的光引发剂、剩余溶剂及0.01-3.5重量份的添加剂,采用搅拌等方式将其均匀混合即制得导光油墨。
称取表1及表2的实施例1-10的组分,通过上述方法制备导光油墨。
表1:
表2:
二、比较例的制备:
在上述实施例6和实施例9的组分上,更改颜料添加量制备比较例,见表3。
表3:
三、固化温度试验:
本发明导光油墨的使用方法,包括:
通过丝网印刷、旋涂、SLIT&SPIN(缝隙和旋涂组合)或喷墨打印方式将导光油墨涂布在导光板的背面,在一定的温度下进行热固化,或紫外固化,得到油墨图案。除实施例2由于采用热固化树脂,用热固化方式之外,其他实施例皆为紫外固化。
将上述实施例和比较例的导光油墨,通过上述方法,在导光板上形成油墨图案,测量固化温度及时间,如表4所示。
表4:
结论:从表4可以看出,在本发明内由于采用UV固化工艺或在热固化工艺时采用固化温度低的材料,因此本发明的固化温度低于导光板变形温度。经研究得出在40-80度温度下进行热固化0.5h~2h即可完全固化,且不发生导光板变形;紫外固化温度更低,时间更短。
四、色偏试验
将上述实施例和比较例的导光油墨,通过上述方法,在导光板上形成油墨图案并在其他组件相同的条件下组成背光源,观察是否产生色偏,如表5所示。
表5:
注:
“○”:无色偏;“x”:严重色偏;“△”:轻微色偏。
结论:从表5可以看出,比较例1-4在以上采用UV固化的实施例中采用的光固化组分在固化成膜时发生严重的黄变色偏现象。本发明的实施例中,采取适当添加颜料的方式进行补偿,不同程度地减少或防止了导光板做成背光源时产生的色偏现象。
最后应说明的是:以上实施例仅用以说明本发明的技术方案,而非对其限制;尽管参照前述实施例对本发明进行了详细的说明,本领域的普通技术人员应当理解:其依然可以对前述各实施例所记载的技术方案进行修改,或者对其中部分技术特征进行等同替换;而这些修改或者替换,并不使相应技术方案的本质脱离本发明各实施例技术方案的精神和范围。
Claims (13)
1.一种导光油墨,包括如下重量份的组分:
2-25重量份的散射粒子;
10-50重量份的树脂;
0.01-0.5重量份的颜料;
20-75重量份的溶剂;
0-8.5重量份的光引发剂;以及
0.01-3.5重量份的添加剂。
2.根据权利要求1所述的导光油墨,其中所述散射粒子为二氧化钛、硫酸钡、氧化镁、氧化硅、氧化锌、锌钡白或氧化锆。
3.根据权利要求2所述的导光油墨,其中所述散射粒子的粒径为40-400nm。
4.根据权利要求1所述的导光油墨,其中所述颜料为红颜料、绿颜料、蓝颜料、紫颜料或黑颜料中的两种以上的混合物,用于在导光油墨固化黄变时,平衡光色。
5.根据权利要求4所述的导光油墨,其中所述红颜料为P.R.122、P.R.123、P.R.177、P.R.179、P.R.190、P.R.202、P.R.210、P.R.224、P.R.254、P.R.255、P.R.264、P.R.270或P.R.272;所述绿颜料为P.G.37、P.G.36或P.G.7;所述蓝颜料为P.B.15、P.B.15:3、P.B.15:6、P.B.15:4、P.B.1、P.B.2、P.B.22、P.B.16、P.B.60或P.B.66;所述紫颜料为P.V.32、P.V.36、P.V.38、P.V.39、P.V.23、P.V.9或P.V.1;所述黑颜料为C.I.1或C.I.7。
6.根据权利要求1所述的导光油墨,其中所述树脂为乙烯性不饱和单体。
7.根据权利要求6所述的导光油墨,其中所述乙烯性不饱和单体为丙烯酸酯、聚酯丙烯酸酯齐聚物、环氧丙烯酸酯或环氧树脂。
8.根据权利要求1所述的导光油墨,其中所述树脂为热固树脂或热塑树脂。
9.根据权利要求1所述的导光油墨,其中所述添加剂为分散剂、流平剂、润湿剂、附着促进剂、防氧化剂、紫外线吸收剂、防絮凝剂、消泡剂和稳定剂之一或其组合。
10.根据权利要求1所述的导光油墨,其中所述溶剂为:环己酮、脂肪醇、乙二醇醚、乙酸乙酯、甲乙酮、甲基异丁基酮、单甲基醚乙二醇酯、γ-丁内酯、丙酸-3-乙醚乙酯、丁基卡必醇、丁基卡必醇醋酸酯、丙二醇单甲基醚、丙二醇单甲基醚醋酸酯、环己烷、二甲苯和异丙醇其中之一或者两种以上的组合。
11.根据权利要求1所述的导光油墨,其中所述光引发剂是自由基型光引发剂和阳离子型光引发剂中的任何一种,或两种以上的混合物。
12.一种导光油墨的制备方法,包括:
步骤1、从20-75重量份的溶剂中取出比例为5%~50%加入到10-50重量份的树脂中,均匀混合,制备树脂溶液;
步骤2、将2-25重量份的散射粒子和0.01-0.5重量份的颜料加入所述树脂溶液中,采用包括搅拌的方式进行预分散,制备预分散溶液;
步骤3、将预分散溶液在三辊机上进行分散,得到具有40-400nm粒径分布的散射粒子分散液;
步骤4、在所述散射粒子分散液内添加0-8.5重量份的光引发剂、剩余溶剂及0.01-3.5重量份的添加剂,采用包括搅拌的方式将其均匀混合即制得导光油墨。
13.一种根据权利要求12制备的导光油墨的使用方法,包括:
将导光油墨涂布在导光板的背面,在40-80度温度下进行热固化0.5h~2h,或进行紫外固化得到油墨图案。
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
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CN2009102415770A CN102079899B (zh) | 2009-11-26 | 2009-11-26 | 导光油墨及其制备方法和使用方法 |
US12/954,054 US20110123722A1 (en) | 2009-11-26 | 2010-11-24 | Light-guide ink, using method and manufacturing method of the same |
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CN1955234A (zh) * | 2005-10-25 | 2007-05-02 | 樊官保 | 等同于雕刻凹版油墨的照相凹版油墨及其应用 |
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