CN109791238A - The manufacturing method of optical film and optical film - Google Patents
The manufacturing method of optical film and optical film Download PDFInfo
- Publication number
- CN109791238A CN109791238A CN201780059892.4A CN201780059892A CN109791238A CN 109791238 A CN109791238 A CN 109791238A CN 201780059892 A CN201780059892 A CN 201780059892A CN 109791238 A CN109791238 A CN 109791238A
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- Prior art keywords
- optical film
- formula
- film
- polyimides
- bis
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- 239000012788 optical film Substances 0.000 title claims abstract description 68
- 238000004519 manufacturing process Methods 0.000 title claims description 10
- 239000004642 Polyimide Substances 0.000 claims abstract description 59
- 229920001721 polyimide Polymers 0.000 claims abstract description 59
- 238000004040 coloring Methods 0.000 claims abstract description 25
- 239000010408 film Substances 0.000 description 44
- -1 tetracarboxylic compound Chemical class 0.000 description 41
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 30
- 229920002521 macromolecule Polymers 0.000 description 25
- GTDPSWPPOUPBNX-UHFFFAOYSA-N ac1mqpva Chemical compound CC12C(=O)OC(=O)C1(C)C1(C)C2(C)C(=O)OC1=O GTDPSWPPOUPBNX-UHFFFAOYSA-N 0.000 description 20
- 150000001875 compounds Chemical class 0.000 description 17
- 239000010410 layer Substances 0.000 description 16
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- 239000000377 silicon dioxide Substances 0.000 description 15
- 239000000126 substance Substances 0.000 description 15
- 239000004952 Polyamide Substances 0.000 description 14
- 229920002647 polyamide Polymers 0.000 description 14
- ATUOYWHBWRKTHZ-UHFFFAOYSA-N Propane Chemical compound CCC ATUOYWHBWRKTHZ-UHFFFAOYSA-N 0.000 description 12
- 150000004985 diamines Chemical class 0.000 description 12
- 238000000034 method Methods 0.000 description 10
- 125000000962 organic group Chemical group 0.000 description 10
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- 125000003118 aryl group Chemical group 0.000 description 9
- 230000006870 function Effects 0.000 description 9
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- YVNRUPSDZZZUQJ-UHFFFAOYSA-N [O].NC1=CC=CC=C1 Chemical compound [O].NC1=CC=CC=C1 YVNRUPSDZZZUQJ-UHFFFAOYSA-N 0.000 description 7
- 239000006096 absorbing agent Substances 0.000 description 7
- 125000001931 aliphatic group Chemical group 0.000 description 7
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical group C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 7
- LGRFSURHDFAFJT-UHFFFAOYSA-N phthalic anhydride Chemical class C1=CC=C2C(=O)OC(=O)C2=C1 LGRFSURHDFAFJT-UHFFFAOYSA-N 0.000 description 7
- NAWXUBYGYWOOIX-SFHVURJKSA-N (2s)-2-[[4-[2-(2,4-diaminoquinazolin-6-yl)ethyl]benzoyl]amino]-4-methylidenepentanedioic acid Chemical compound C1=CC2=NC(N)=NC(N)=C2C=C1CCC1=CC=C(C(=O)N[C@@H](CC(=C)C(O)=O)C(O)=O)C=C1 NAWXUBYGYWOOIX-SFHVURJKSA-N 0.000 description 6
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- ZUOUZKKEUPVFJK-UHFFFAOYSA-N diphenyl Chemical compound C1=CC=CC=C1C1=CC=CC=C1 ZUOUZKKEUPVFJK-UHFFFAOYSA-N 0.000 description 6
- 238000011156 evaluation Methods 0.000 description 6
- BDAGIHXWWSANSR-UHFFFAOYSA-N methanoic acid Natural products OC=O BDAGIHXWWSANSR-UHFFFAOYSA-N 0.000 description 6
- 125000001997 phenyl group Chemical group [H]C1=C([H])C([H])=C(*)C([H])=C1[H] 0.000 description 6
- 125000004432 carbon atom Chemical group C* 0.000 description 5
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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 4
- 230000000052 comparative effect Effects 0.000 description 4
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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 3
- YEJRWHAVMIAJKC-UHFFFAOYSA-N 4-Butyrolactone Chemical compound O=C1CCCO1 YEJRWHAVMIAJKC-UHFFFAOYSA-N 0.000 description 3
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- KZTYYGOKRVBIMI-UHFFFAOYSA-N diphenyl sulfone Chemical class C=1C=CC=CC=1S(=O)(=O)C1=CC=CC=C1 KZTYYGOKRVBIMI-UHFFFAOYSA-N 0.000 description 3
- 229910052731 fluorine Inorganic materials 0.000 description 3
- 235000019253 formic acid Nutrition 0.000 description 3
- 239000004615 ingredient Substances 0.000 description 3
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 3
- 239000012528 membrane Substances 0.000 description 3
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- WZCQRUWWHSTZEM-UHFFFAOYSA-N 1,3-phenylenediamine Chemical compound NC1=CC=CC(N)=C1 WZCQRUWWHSTZEM-UHFFFAOYSA-N 0.000 description 2
- QYIMZXITLDTULQ-UHFFFAOYSA-N 4-(4-amino-2-methylphenyl)-3-methylaniline Chemical class CC1=CC(N)=CC=C1C1=CC=C(N)C=C1C QYIMZXITLDTULQ-UHFFFAOYSA-N 0.000 description 2
- NVKGJHAQGWCWDI-UHFFFAOYSA-N 4-[4-amino-2-(trifluoromethyl)phenyl]-3-(trifluoromethyl)aniline Chemical compound FC(F)(F)C1=CC(N)=CC=C1C1=CC=C(N)C=C1C(F)(F)F NVKGJHAQGWCWDI-UHFFFAOYSA-N 0.000 description 2
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 description 2
- ROSDSFDQCJNGOL-UHFFFAOYSA-N Dimethylamine Chemical compound CNC ROSDSFDQCJNGOL-UHFFFAOYSA-N 0.000 description 2
- 241000790917 Dioxys <bee> Species 0.000 description 2
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 description 2
- OFOBLEOULBTSOW-UHFFFAOYSA-N Malonic acid Chemical compound OC(=O)CC(O)=O OFOBLEOULBTSOW-UHFFFAOYSA-N 0.000 description 2
- 229910003978 SiClx Inorganic materials 0.000 description 2
- BOTDANWDWHJENH-UHFFFAOYSA-N Tetraethyl orthosilicate Chemical compound CCO[Si](OCC)(OCC)OCC BOTDANWDWHJENH-UHFFFAOYSA-N 0.000 description 2
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 description 2
- 239000000654 additive Substances 0.000 description 2
- 239000012790 adhesive layer Substances 0.000 description 2
- 125000003368 amide group Chemical group 0.000 description 2
- 239000012298 atmosphere Substances 0.000 description 2
- HFACYLZERDEVSX-UHFFFAOYSA-N benzidine Chemical group C1=CC(N)=CC=C1C1=CC=C(N)C=C1 HFACYLZERDEVSX-UHFFFAOYSA-N 0.000 description 2
- WPYMKLBDIGXBTP-UHFFFAOYSA-N benzoic acid Chemical compound OC(=O)C1=CC=CC=C1 WPYMKLBDIGXBTP-UHFFFAOYSA-N 0.000 description 2
- 125000002619 bicyclic group Chemical group 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
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- NAQMVNRVTILPCV-UHFFFAOYSA-N hexane-1,6-diamine Chemical compound NCCCCCCN NAQMVNRVTILPCV-UHFFFAOYSA-N 0.000 description 2
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- 229940018564 m-phenylenediamine Drugs 0.000 description 2
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 description 2
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- 125000000843 phenylene group Chemical group C1(=C(C=CC=C1)*)* 0.000 description 2
- XNGIFLGASWRNHJ-UHFFFAOYSA-N phthalic acid Chemical compound OC(=O)C1=CC=CC=C1C(O)=O XNGIFLGASWRNHJ-UHFFFAOYSA-N 0.000 description 2
- 230000000704 physical effect Effects 0.000 description 2
- 238000006068 polycondensation reaction Methods 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 229910000077 silane Inorganic materials 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 239000002904 solvent Substances 0.000 description 2
- 239000010935 stainless steel Substances 0.000 description 2
- 229910001220 stainless steel Inorganic materials 0.000 description 2
- 150000003457 sulfones Chemical class 0.000 description 2
- 150000000000 tetracarboxylic acids Chemical class 0.000 description 2
- 238000002834 transmittance Methods 0.000 description 2
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- 125000002023 trifluoromethyl group Chemical group FC(F)(F)* 0.000 description 2
- JYEUMXHLPRZUAT-UHFFFAOYSA-N 1,2,3-triazine Chemical compound C1=CN=NN=C1 JYEUMXHLPRZUAT-UHFFFAOYSA-N 0.000 description 1
- CBCKQZAAMUWICA-UHFFFAOYSA-N 1,4-phenylenediamine Chemical compound NC1=CC=C(N)C=C1 CBCKQZAAMUWICA-UHFFFAOYSA-N 0.000 description 1
- VOZKAJLKRJDJLL-UHFFFAOYSA-N 2,4-diaminotoluene Chemical compound CC1=CC=C(N)C=C1N VOZKAJLKRJDJLL-UHFFFAOYSA-N 0.000 description 1
- MXPYJVUYLVNEBB-UHFFFAOYSA-N 2-[2-(2-carboxybenzoyl)oxycarbonylbenzoyl]oxycarbonylbenzoic acid Chemical compound OC(=O)C1=CC=CC=C1C(=O)OC(=O)C1=CC=CC=C1C(=O)OC(=O)C1=CC=CC=C1C(O)=O MXPYJVUYLVNEBB-UHFFFAOYSA-N 0.000 description 1
- LXJLFVRAWOOQDR-UHFFFAOYSA-N 3-(3-aminophenoxy)aniline Chemical compound NC1=CC=CC(OC=2C=C(N)C=CC=2)=C1 LXJLFVRAWOOQDR-UHFFFAOYSA-N 0.000 description 1
- UITKHKNFVCYWNG-UHFFFAOYSA-N 4-(3,4-dicarboxybenzoyl)phthalic acid Chemical compound C1=C(C(O)=O)C(C(=O)O)=CC=C1C(=O)C1=CC=C(C(O)=O)C(C(O)=O)=C1 UITKHKNFVCYWNG-UHFFFAOYSA-N 0.000 description 1
- JPZRPCNEISCANI-UHFFFAOYSA-N 4-(4-aminophenyl)-3-(trifluoromethyl)aniline Chemical compound C1=CC(N)=CC=C1C1=CC=C(N)C=C1C(F)(F)F JPZRPCNEISCANI-UHFFFAOYSA-N 0.000 description 1
- NEQFBGHQPUXOFH-UHFFFAOYSA-N 4-(4-carboxyphenyl)benzoic acid Chemical class C1=CC(C(=O)O)=CC=C1C1=CC=C(C(O)=O)C=C1 NEQFBGHQPUXOFH-UHFFFAOYSA-N 0.000 description 1
- RHUMCWYPACZYRM-UHFFFAOYSA-N 4-[1-(4-amino-3-fluorophenyl)-9H-fluoren-2-yl]-2-fluoroaniline Chemical group NC1=C(C=C(C=C1)C1=C(C=2CC3=CC=CC=C3C=2C=C1)C1=CC(=C(C=C1)N)F)F RHUMCWYPACZYRM-UHFFFAOYSA-N 0.000 description 1
- RBCRDGPAIUTPGK-UHFFFAOYSA-N 4-[1-(4-aminophenyl)-9h-fluoren-2-yl]aniline Chemical class C1=CC(N)=CC=C1C1=CC=C(C=2C(=CC=CC=2)C2)C2=C1C1=CC=C(N)C=C1 RBCRDGPAIUTPGK-UHFFFAOYSA-N 0.000 description 1
- YGYCECQIOXZODZ-UHFFFAOYSA-N 4415-87-6 Chemical compound O=C1OC(=O)C2C1C1C(=O)OC(=O)C12 YGYCECQIOXZODZ-UHFFFAOYSA-N 0.000 description 1
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- FDLQZKYLHJJBHD-UHFFFAOYSA-N [3-(aminomethyl)phenyl]methanamine Chemical compound NCC1=CC=CC(CN)=C1 FDLQZKYLHJJBHD-UHFFFAOYSA-N 0.000 description 1
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- QRUDEWIWKLJBPS-UHFFFAOYSA-N benzotriazole Chemical compound C1=CC=C2N[N][N]C2=C1 QRUDEWIWKLJBPS-UHFFFAOYSA-N 0.000 description 1
- 239000012964 benzotriazole Substances 0.000 description 1
- JHIWVOJDXOSYLW-UHFFFAOYSA-N butyl 2,2-difluorocyclopropane-1-carboxylate Chemical compound CCCCOC(=O)C1CC1(F)F JHIWVOJDXOSYLW-UHFFFAOYSA-N 0.000 description 1
- 150000001735 carboxylic acids Chemical class 0.000 description 1
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- 125000001309 chloro group Chemical group Cl* 0.000 description 1
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- WOSVXXBNNCUXMT-UHFFFAOYSA-N cyclopentane-1,2,3,4-tetracarboxylic acid Chemical compound OC(=O)C1CC(C(O)=O)C(C(O)=O)C1C(O)=O WOSVXXBNNCUXMT-UHFFFAOYSA-N 0.000 description 1
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- 125000004435 hydrogen atom Chemical group [H]* 0.000 description 1
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- QQVIHTHCMHWDBS-UHFFFAOYSA-N isophthalic acid Chemical compound OC(=O)C1=CC=CC(C(O)=O)=C1 QQVIHTHCMHWDBS-UHFFFAOYSA-N 0.000 description 1
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- KQSABULTKYLFEV-UHFFFAOYSA-N naphthalene-1,5-diamine Chemical compound C1=CC=C2C(N)=CC=CC2=C1N KQSABULTKYLFEV-UHFFFAOYSA-N 0.000 description 1
- GOGZBMRXLADNEV-UHFFFAOYSA-N naphthalene-2,6-diamine Chemical compound C1=C(N)C=CC2=CC(N)=CC=C21 GOGZBMRXLADNEV-UHFFFAOYSA-N 0.000 description 1
- UFWIBTONFRDIAS-UHFFFAOYSA-N naphthalene-acid Natural products C1=CC=CC2=CC=CC=C21 UFWIBTONFRDIAS-UHFFFAOYSA-N 0.000 description 1
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Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J5/00—Manufacture of articles or shaped materials containing macromolecular substances
- C08J5/18—Manufacture of films or sheets
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J7/00—Chemical treatment or coating of shaped articles made of macromolecular substances
- C08J7/12—Chemical modification
- C08J7/123—Treatment by wave energy or particle radiation
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L79/00—Compositions of macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing nitrogen with or without oxygen or carbon only, not provided for in groups C08L61/00 - C08L77/00
- C08L79/04—Polycondensates having nitrogen-containing heterocyclic rings in the main chain; Polyhydrazides; Polyamide acids or similar polyimide precursors
- C08L79/08—Polyimides; Polyester-imides; Polyamide-imides; Polyamide acids or similar polyimide precursors
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B5/00—Optical elements other than lenses
- G02B5/20—Filters
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B5/00—Optical elements other than lenses
- G02B5/20—Filters
- G02B5/22—Absorbing filters
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B5/00—Optical elements other than lenses
- G02B5/30—Polarising elements
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/133305—Flexible substrates, e.g. plastics, organic film
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
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Abstract
The purpose of the present invention is to provide can inhibit in flexible device from the optical film of end face EF light leakage and using its device.Optical film of the invention is containing the high molecular transparent optical film of polyimides system, and the end EP of optical film is coloured.End EP can be in Munsell colour system with the form and aspect of 2YR~3Y, or is netrual colour.It in the form and aspect in the background of white with 2YR~3Y preferably in Munsell colour system, or is netrual colour for the coloring of aforesaid end.
Description
Technical field
The present invention relates to the manufacturing methods of optical film and optical film.
Background technique
In the device that smart phone, tablet computer etc. have display, it is desirable that the narrow frame of display, wherein film
The design of the optical path of end periphery becomes important.Can by end utilized using the component of white color system reflected light or
Unnecessary light is absorbed by using dark features, for example, in the face illumination for display device, it has been proposed that by right
The color of the component of framework is designed the scheme to make brightness increase, brightness disproportionation reduction (referring to patent document 1).
In flexible device, as front panel, transparent resin film is had studied.
For example, having studied the use containing the high molecular film of polyimides system as front panel (referring to patent document 2).
Existing technical literature
Patent document
Patent document 1: Japanese Unexamined Patent Publication 09-5740 bulletin
Patent document 2: Japanese Unexamined Patent Publication 2016-93992 bulletin
Summary of the invention
Subject to be solved by the invention
In flexible device, it is also desirable to be designed to avoid there are following situations: the brightness disproportionation of display end, because
Efficiency reduces caused by light leakage near end, unnecessary light leaks to outside and appearance design is caused to reduce etc..
The present invention is made in view of the above subject, and its purpose is to provide can inhibit in flexible device from end face light leakage
Optical film and use its flexible device.
Means for solving the problems
Optical film of the present invention is containing the high molecular transparent optical film of polyimides system, the end of aforementioned optical film
It is coloured.
According to the present invention, pass through the coloring of end, it is suppressed that light leakage (that is, light is via end face, portion is leaked out from the inside).
Therefore, regardless of the component of framework, it is able to suppress the light leaked out from end to outside.
It here, can be in Munsell colour system (Munsell Color for the coloring of aforesaid end
It System in the form and aspect in the background of white with 2YR~3Y in), or is netrual colour.
In addition, can have in Munsell colour system in the background of white for the coloring of aforesaid end
The form and aspect of 3YR~10YR.
In addition, thickness can be 20~100 μm.
Moreover, it relates to the manufacturing method of optical film, wherein coloured end by laser irradiation.The manufacture
In method, optical film be can be containing the high molecular transparent optical film of polyimides system.
Flexible device of the present invention has any of the above-described kind of optical film with front panel.
Flexible device of the present invention has flexibility function layer and any of the above-described kind of optical film.
Invention effect
According to the present invention, it is possible to provide can inhibit in flexible device from the optical film of end face light leakage and using its flexible device
Part.
Detailed description of the invention
[Fig. 1] Fig. 1 is the perspective view for showing an example for the optical film that embodiments of the present invention are related to.
[Fig. 2] Fig. 2 is the perspective view for showing an example for the flexible display that embodiments of the present invention are related to.
Specific embodiment
Optical film 10 of the present embodiment shown in Fig. 1, is somebody's turn to do containing polyimides system high molecular transparent optical film
The end EP of optical film 10 is coloured.
So-called end EP is the part along end face EF of optical film 10.From the direction vertical with the surface of optical film 10
When observation, the width W of end EP can be 10~500 μm.It can make the cricoid end EP entirety quilt along whole end face EF
Coloring, can also a part (for example, along part of an end face EF) of only cricoid end EP coloured.
Coloring is presented in Munsell colour system.Coloring refers to: film being either placed in white (munsell color
When in system on the background colour of N9), light green color is also placed in (on the background colour in Munsell colour system for 10GY8/6)
When, judgement end EP is substantially the same color in Munsell colour system.It is so-called to be determined as substantially the same face
Color refers to: the difference of form and aspect be within 5 (for example, for when background colour is white form and aspect be judged as the end of 7YR, carrying on the back
The case where scenery is judged as 2YR~10YR or 1Y~2Y when being light green color), and the difference of chroma and lightness is within 2.
The difference of more preferable form and aspect is within 3, and the difference of chroma and lightness is respectively within 1, is most preferably all determined
For identical value.
On the other hand, the end EP for the existing clear polyimides mesentery not coloured has the transmission above to a certain degree
Therefore rate is judged as mutually different color depending on background colour.Specifically, with regard to the Meng Sai in the case where white background
For Munsell evaluation of estimate in the case where that evaluation of estimate and light green color background, meeting (a) form and aspect difference is 6 or more, (b) chroma
Difference be 3 or more and (c) lightness difference be 3 it is of the above at least one when, become non-coloring.
It can be chromatic colour (chroma is greater than 0), or netrual colour N (chroma 0) for coloring.
Preferred form and aspect are in Munsell colour system in being 2YR~3Y or netrual colour (N) in the background of white.It is more excellent
The form and aspect of choosing are 3YR~10YR.The coloring of such end can be readily available by laser cutting, therefore preferably.
From the viewpoint of never making the color of end EP obvious, form and aspect, chroma can be suitably adjusted within the above range
And lightness, become and be configured in the approximate color of component around optical film 10.
Evaluation in the Munsell colour system of the color of end EP can be by by the color card of Munsell colour system
It is compared to implement with the color of end EP.The color observation of the end EP of optical film 10 is by from the surface with optical film 10
End EP is observed to carry out in vertical direction.When observing end EP, observed with microscope.Film is placed in white (Meng Sai
Be N9 in your color system) background colour on and be compared with color card and determine the form and aspect in Munsell colour system,
Chroma and lightness, next, film is placed on the background colour of light green color (in Munsell colour system for 10GY8/6) and and color
Sample is compared and determines the form and aspect in Munsell colour system, chroma and lightness, has in any background colour upper end EP
It is judged as substantially the same color, i.e. the difference of form and aspect is within 5 and the difference of chroma and lightness is the position within 2
In the case where, determine film coloring.
The refractive index of above-mentioned optical film 10 is usually 1.45~1.7, and preferably 1.5~1.66.
The thickness of optical film 10 can suitably adjust, usually 10~500 μm according to type of flexible device etc., preferably
It is 15~200 μm, more preferably 20~100 μm.
The total light transmittance according to JIS K 7105:1981 of optical film 10 is usually 85% or more, and preferably 90%
More than.
The mist degree (Haze) according to JIS K 7105:1981 of optical film 10 can be 1 or less, or 0.9 or less.
It should be noted that refractive index, total light transmittance and mist degree are measured on the thickness direction of optical film
Value.
The size of optical film 10 can suitably be adjusted according to the size of applied flexible device.In addition, optical film 10
Shape be also not necessarily limited to rectangle, can suitably be adjusted according to flexible device (for oval, trapezoidal, round etc.).
(material of film)
(transparent resin)
Above-mentioned optical film includes the transparent resins such as polyimides system macromolecule.
(polyimides system macromolecule)
In this specification, so-called polyimides is the polymer containing the constitutional repeating unit comprising imide；It is so-called
Polyamide is the polymer containing the constitutional repeating unit comprising amide groups.So-called polyimides system macromolecule indicates that polyamides is sub-
Amine and polymer containing the constitutional repeating unit comprising imide and amide groups this two side.
Polyimides system of the present embodiment macromolecule can be by aftermentioned tetracarboxylic compound and diamine compound
It is manufactured as primary raw material, the constitutional repeating unit indicated with formula (10).Here, G is the organic group of 4 valences, and A is divalent
Organic group.It may include the structure that the different two or more formulas (10) of G and/or A indicate.
In addition, present embodiment relates in the range of the various physical property for the polyimides system polymeric membrane not damaged
And polyimides system macromolecule also may include the structure that any formula indicates in formula (11)~formula (13).
For polyimides system macromolecule, the constitutional repeating unit that formula (10) indicates is that polyimides system is high molecular
It is preferred from the viewpoint of film strength and the transparency when essential building blocks.Relative to polyimides, system is high molecular
For whole constitutional repeating units, the constitutional repeating unit that formula (10) indicates is preferably 40 moles of % or more, and more preferably 50 rub
You are % or more, and further preferably 70 moles of % or more, especially more preferably 90 moles of % or more are especially still more preferably
98 moles of % or more.The constitutional repeating unit that formula (10) indicates can be 100 moles of %.
[chemical formula 1]
[chemical formula 2]
[chemical formula 3]
[chemical formula 4]
G and G1For the organic group of 4 valences, the organic group that can be preferably replaced by alkyl or fluorine-substituted alkyl,
Formula (20), formula (21), formula (22), formula (23), formula (24), formula (25), formula (26), formula (27), formula (28) or formula (29) can be illustrated
The carbon atom number of the group of expression and 4 valences is 6 chain type alkyl below.* expression chemical bond in formula, Z expression singly-bound ,-
O-、-CH2-、-CH2-CH2-、-CH(CH3)-、-C(CH3)2-、-C(CF3)2-、-Ar-、-SO2-、-CO-、-O-Ar-O-、-Ar-O-
Ar-、-Ar-CH2-Ar-、-Ar-C(CH3)2- Ar- or-Ar-SO2-Ar-.Ar indicates the carbon atom number that can be replaced by fluorine atoms
Phenylene can be enumerated as concrete example for 6~20 arlydene.From the aspect of the yellow chromaticity of the easy film for inhibiting to obtain,
G and G1Any group being preferably selected from the group that formula (20)~formula (27) indicates.
[chemical formula 5]
G2For the organic group of trivalent, the organic group that can be preferably replaced by alkyl or fluorine-substituted alkyl can example
Show that formula (20), formula (21), formula (22), formula (23), formula (24), formula (25), formula (26), formula (27), formula (28) or formula (29) indicate
Group chemical bond in any one be replaced by group and trivalent obtained from hydrogen atom carbon atom number be 6 or less
Chain type alkyl.
G3For the organic group of divalent, the organic group that can be preferably replaced by alkyl or fluorine-substituted alkyl can example
Show that formula (20), formula (21), formula (22), formula (23), formula (24), formula (25), formula (26), formula (27), formula (28) or formula (29) indicate
Group chemical bond in non-conterminous 2 be replaced by group and carbon atom number obtained from hydrogen atom be 6 chain types below
Alkyl.
A、A1、A2、A3It is the organic group of divalent, can be preferably replaced by alkyl or fluorine-substituted alkyl organic
Group can illustrate formula (30), formula (31), formula (32), formula (33), formula (34), formula (35), formula (36), formula (37) or formula (38) table
The group shown；Group obtained from they are replaced by methyl, fluorine-based, chloro or trifluoromethyl and carbon atom number are 6 below
Chain type alkyl.
* in formula indicates chemical bond, Z1、Z2And Z3Each independently represent singly-bound ,-O- ,-CH2-、-CH2-CH2-、-CH
(CH3)-、-C(CH3)2-、-C(CF3)2-、-SO2Or-CO-.One example are as follows: Z1And Z3For-O-, also, Z2For-CH2-、-C
(CH3)2-、-C(CF3)2Or-SO2-。Z1With Z2And Z2With Z3Respectively it is located at meta or para position preferably with respect to each ring.
[chemical formula 6]
Polyamide of the present embodiment is the polymer based on the constitutional repeating unit that is indicated with formula (13).Preference
And the G in concrete example and polyimides system macromolecule3And A3It is identical.It may include G3And/or A3Different two or more formulas (13)
The structure of expression.
Polyimides system macromolecule can for example be obtained by the polycondensation of diamines and tetracarboxylic compound (tetracarboxylic dianhydride etc.)
It arrives, such as can be according to the method recorded in Japanese Unexamined Patent Publication 2006-199945 bulletin or Japanese Unexamined Patent Publication 2008-163107 bulletin
To synthesize.As the commercially available product of polyimides, Mitsubishi Gas Chemical Company, Inc. system can be enumerated
Neopulim etc..
As the tetracarboxylic compound for synthesis of polyimides, the aromatic series tetracarboxylic acid such as aromatic tetracarboxylic dianhydride can be enumerated
The aliphatic tetracarboxylic compound such as acid compound and aliphatic tetracarboxylic dianhydride.Tetracarboxylic compound can be used alone, can also
To be used in combination of two or more.For tetracarboxylic compound, other than dianhydride, it is also possible to the acidification of the tetracarboxylic acids such as chloride compounds
Close object analog.
As the concrete example of aromatic tetracarboxylic dianhydride, 4,4 '-oxygen double phthalic anhydrides, 3 can be enumerated, 3 ', 4,4 '-two
Benzophenone tetracarboxylic acid dianhydride, 2,2 ', 3,3 '-benzophenone tetracarboxylic dianhydrides, 3,3 ', 4,4 '-bibenzene tetracarboxylic dianhydrides, 2,2 ',
Bis- (3,4- dicarboxyphenyi) propane two of 3,3 '-bibenzene tetracarboxylic dianhydrides, 3,3 ', 4,4 '-diphenyl sulfone tetracarboxylic acid dianhydrides, 2,2-
Bis- (2,3- dicarboxyphenyi) propane dianhydrides of acid anhydride, 2,2-, 2,2- bis- (3,4- di carboxyl phenyloxy phenyl) propane dianhydrides, 4,4 '-
(hexafluoroisopropyli,ene) double phthalic anhydrides (4,4 '-(hexafluoroisopropylidene) diphthalic
Dianhydride), bis- (2,3- dicarboxyphenyi) the ethane dianhydrides of 1,2-, 1,1- bis- (2,3- dicarboxyphenyi) ethane dianhydrides, 1,
Bis- (3,4- dicarboxyphenyi) the ethane dianhydrides of 2-, bis- (3,4- dicarboxyphenyi) the ethane dianhydrides of 1,1-, bis- (3,4- dicarboxyl benzene
Base) it is methane dianhydride, bis- (2,3- dicarboxyphenyi) methane dianhydrides, 4,4 '-double (to two oxygroup of benzene (p-phenylenedioxy))
Phthalic anhydride, the double phthalic anhydrides of 4,4 '-(two oxygroups of isophthalic (m-phenylenedioxy)) and 2,3,6,7- naphthalene four
Formic acid dianhydride, can preferably enumerate 4,4 '-oxygen double phthalic anhydrides, 3,3 ', 4,4 '-benzophenone tetracarboxylic dianhydrides, 2, and 2 ', 3,
3 '-benzophenone tetracarboxylic dianhydrides, 3,3 ', 4,4 '-bibenzene tetracarboxylic dianhydrides, 2,2 ', 3,3 '-bibenzene tetracarboxylic dianhydrides, 3,3 ',
Bis- (3,4- dicarboxyphenyi) propane dianhydrides of 4,4 '-diphenyl sulfone tetracarboxylic acid dianhydrides, 2,2-, 2,2- bis- (2,3- dicarboxyphenyis)
Bis- (the 3,4- di carboxyl phenyloxy phenyl) propane dianhydrides of propane dianhydride, 2,2-, 4,4 '-(hexafluoroisopropyli,ene) double phthalic acids
Bis- (2,3- dicarboxyphenyi) the ethane dianhydrides of acid anhydride, 1,2-, bis- (2,3- dicarboxyphenyi) the ethane dianhydrides of 1,1-, the bis- (3,4- of 1,2-
Dicarboxyphenyi) ethane dianhydride, bis- (3,4- dicarboxyphenyi) the ethane dianhydrides of 1,1-, bis- (3,4- dicarboxyphenyi) methane two
Acid anhydride, bis- (2,3- dicarboxyphenyi) methane dianhydrides, 4,4 '-double phthalic anhydrides and 4,4 '-(isophthalic dioxies (to two oxygroup of benzene)
Base) double phthalic anhydrides.They can be used alone or combine two or more and use.
As aliphatic tetracarboxylic dianhydride, the aliphatic tetracarboxylic dianhydride of ring type or non-ring type can be enumerated.So-called ring type rouge
Fat race tetracarboxylic dianhydride is the tetracarboxylic dianhydride with ester ring type hydrocarbon structure, as its concrete example, can enumerate 1,2,4,5- hexamethylenes
The cycloalkane tetrabasic carboxylic acids such as alkane tetracarboxylic acid dianhydride, 1,2,3,4- cyclobutanetetracarboxylic dianhydride, 1,2,3,4- cyclopentane tetracarboxylic acid dianhydride
Dianhydride, bicyclic [2.2.2] octyl- 7- alkene -2,3,5,6- tetracarboxylic acid dianhydride, dicyclohexyl -3,3 ', 4,4 '-tetracarboxylic acid dianhydrides and it
Position isomer.They can be used alone or combine two or more and use.As non-ring type aliphatic tetrabasic carboxylic acid two
The concrete example of acid anhydride can enumerate 1,2,3,4- ethylene-dimalonic acid dianhydrides, 1,2,3,4- pentane tetracarboxylic acid dianhydrides etc., they can be independent
Using or combine two or more and use.
In above-mentioned tetracarboxylic dianhydride, from the viewpoint of high transparency and less colored property, preferably 1,2,4,5- hexamethylenes four
Formic acid dianhydride, bicyclic [2.2.2] octyl- 7- alkene -2,3,5,6- tetracarboxylic acid dianhydride and 4,4 '-(hexafluoroisopropyli,ene) double phthalic acids
Acid anhydride.
It should be noted that in the range of the various physical property for the polyimides system polymeric membrane not damaged, this reality
The polyimides system macromolecule that the mode of applying is related to be also possible to the acid anhydride in addition to the above-mentioned tetrabasic carboxylic acid for synthesis of polyimides with
Outside, product obtained from reacting tetrabasic carboxylic acid, tricarboxylic acids and dicarboxylic acids and their acid anhydride and derivative.
As tricarboxylic acid compound, aromatic tricarboxylic acids, aliphatic tricarboxylic acids and their similar chloride can be enumerated
Object, acid anhydrides etc. are closed, two or more kinds may be used.
As concrete example, the acid anhydride of 1,2,4- benzenetricarboxylic acids can be enumerated；2,3,6- naphthalenetricarboxylic acid -2,3- acid anhydride；Phthalic acid
Acid anhydride and benzoic acid are via singly-bound ,-CH2-、-C(CH3)2-、-C(CF3)2-、-SO2Or the compound that phenylene is formed by connecting.
As dicarboxylic acid compound, aromatic dicarboxylic acid, aliphatic dicarboxylic acid and their similar chloride can be enumerated
Object, acid anhydrides etc. are closed, two or more kinds may be used.As concrete example, terephthalic acid (TPA) can be enumerated；M-phthalic acid；Naphthalenedicarboxylic acid；
4,4 '-biphenyl dicarboxylic acids；3,3 '-biphenyl dicarboxylic acids；Carbon atom number is the dicarboxylic acid compound and 2 benzene of 8 chain type hydrocarbon below
Formic acid is via singly-bound ,-CH2-、-C(CH3)2-、-C(CF3)2-、-SO2Or the compound that phenylene is formed by connecting.
As the diamines for synthesis of polyimides, aliphatic diamine, aromatic diamine or their mixture can be.
It should be noted that in present embodiment, it is so-called " aromatic diamine ", indicate that amino is bonded directly to two made of aromatic rings
Amine can include aliphatic group or other substituent groups in a part of its structure.Aromatic rings can be monocycle, or
Condensed ring can enumerate phenyl ring, naphthalene nucleus, anthracene nucleus and fluorenes ring etc., but be not limited to these.In these, preferably phenyl ring.In addition, so-called " rouge
Fat race diamines " indicates that amino is bonded directly to diamines made of aliphatic group, and virtue can be included in a part of its structure
Fragrant ring, other substituent groups.
As aliphatic diamine, for example, the non-ring type aliphatic diamine such as 1,6- hexamethylene diamine and 1 can be enumerated, bis- (the amino first of 3-
Base) the ring types rouge such as hexamethylene, bis- (amino methyl) hexamethylenes of 1,4-, norbornane diamines, 4,4 '-diamino-dicyclohexyl methanes
Fat race diamines etc., they can be used alone or combine two or more and use.
As aromatic diamine, for example, can enumerate p-phenylenediamine, m-phenylene diamine (MPD), 2,4- toluenediamine, m-xylene diamine,
P dimethylamine, 1,5- diaminonaphthalene, 2,6- diaminonaphthalene etc. have aromatic diamine, the 4,4 '-diamino two of 1 aromatic rings
Phenylmethane, 4,4 '-diamino-diphenyl propane, 4,4 '-diamino-diphenyl ethers, 3,4 '-diamino-diphenyl ethers, 3,3 '-
Diamino-diphenyl ether, 4,4 '-diamino diphenyl sulfones, 3,4 '-diamino diphenyl sulfones, 3,3 '-diamino diphenyl sulfones, 1,
Bis- (4- amino-benzene oxygen) benzene of 4-, bis- (4- amino-benzene oxygen) benzene of 1,3-, 4,4 '-diamino diphenyl sulfones, bis- (4- (4- amino
Phenoxy group) phenyl) sulfone, bis- (4- (3- amino-benzene oxygen) phenyl) sulfones, 2,2- bis- [4- (4- amino-benzene oxygen) phenyl] propane, 2,
Bis- [4- (3- amino-benzene oxygen) phenyl] propane of 2-, 2,2 '-dimethylbenzidines, 2,2 '-bis- (trifluoromethyl) benzidine, 4,
4 '-bis- (4- amino-benzene oxygen) biphenyl, 4,4 '-diamino-diphenyl ethers, 3,4 '-diamino-diphenyl ethers, 4,4 '-diamino two
Bis- (4- amino -3- aminomethyl phenyl) fluorenes of bis- (4- aminophenyl) fluorenes of phenylmethane, 9,9-, 9,9-, the bis- (4- amino -3- chlorine of 9,9-
Phenyl) aromatic diamine with 2 or more aromatic rings such as fluorenes, bis- (4- amino -3- fluorophenyl) fluorenes of 9,9-, they can be independent
Using or combine two or more and use.
In above-mentioned diamines, from the viewpoint of high transparency and less colored property, it is preferable to use selected from by with biphenyl structural
Aromatic diamine composition one or more of group.Further preferably using selected from by 2,2 '-dimethylbenzidines, 2,2 '-bis-
1 in the group of (trifluoromethyl) benzidine, 4,4 '-bis- (4- amino-benzene oxygen) biphenyl and 4,4 '-diamino-diphenyl ethers composition
Kind or more, it still more preferably include 2,2 '-bis- (trifluoromethyl) benzidine.
As at least one kind of polymer in the constitutional repeating unit indicated comprising formula any in formula (10)~formula (13)
Polyimides system macromolecule and polyamide are as follows: as diamines and by tetracarboxylic compound (chloride compounds, tetracarboxylic dianhydride etc. four
Carboxylic acid compound analog), tricarboxylic acid compound (the tricarboxylic acids compound such as chloride compounds, tricarboxylic acid anhydride analog) and dicarboxyl
The polycondensation at least one kind of compound for including in the group of acid compound (dicarboxylic acid compounds such as chloride compounds analog) composition produces
The condensed type macromolecule of object.As starting material, in addition to these, also further use sometimes dicarboxylic acid compound (including
The analogs such as chloride compounds).The constitutional repeating unit that formula (11) indicates is usually derivative by Diamines and tetracarboxylic compound.Formula
(12) constitutional repeating unit indicated is usually derivative by diamines and tricarboxylic acid compound.The constitutional repeating unit that formula (13) indicates is logical
It is often derivative by diamines and dicarboxylic acid compound.Diamines and the concrete example of tetracarboxylic compound are as mentioned before.
The weight by weight of standard polystyren of polyimides system of the present embodiment macromolecule and polyamide is equal
Molecular weight is usually 10,000~500,000, preferably 50,000~500,000, further preferably 100,000~400,
000.That there are the weight average molecular weight of polyimides system macromolecule and polyamide is bigger, then easier in membranization high bending resistance is presented
The trend of song, if but the weight average molecular weight of polyimides system macromolecule and polyamide it is excessive, there are the viscosity of varnish to get higher,
The trend that processability reduces.
Polyimides system macromolecule and polyamide pass through containing fluoro substituents are contained, so that there are following trend: when membranization
Elasticity modulus improves, also, YI value is lowered.If the elasticity modulus of film is high, the generation that there is damage and gauffer etc. is suppressed
Trend.From the viewpoint of the transparency of film, polyimides system macromolecule and polyamide preferably have containing fluoro substituents.As
Concrete example containing fluoro substituents can enumerate fluorine-based and trifluoromethyl.
For the content of the fluorine atom in polyimides system macromolecule and polyamide, with polyimides system macromolecule or
On the basis of the quality of polyamide, preferably 1 mass % or more, 40 mass % is hereinafter, further preferably 5 mass % or more, 40 matter
Measure % or less.
In optical film of the present embodiment, the high molecular content of polyimides system is 40 mass % or more, preferably
50 mass % or more, further preferably 60 mass % or more.
(inorganic particulate)
Optical film of the present embodiment other than containing polyimides system above-mentioned macromolecule and/or polyamide,
The inorganic material such as inorganic particulate can also be contained.
As inorganic material, 4 grades of alkoxy silanes such as silicon dioxide granule, tetraethyl orthosilicate (TEOS) can be preferably enumerated
Equal silicon compounds, from the viewpoint of varnish stability, preferably silicon dioxide granule.
The average primary particle diameter of silicon dioxide granule is preferably 10~100nm, further preferably 20~80nm.If dioxy
The average primary particle diameter of SiClx particle is 100nm hereinafter, then there is the trend that the transparency improves.If silicon dioxide granule is averaged
Primary particle size is 10nm or more, then exists and become easy the trend of operation because the cohesive force of silicon dioxide granule dies down.
Silicon dioxide microparticle of the present embodiment can be make silicon dioxide granule be dispersed in organic solvent etc. and
The silicon dioxide microparticle powder manufactured by vapor phase method also can be used in obtained silica solution, but from the aspect of operation readily,
Preferably silica solution.
(average) primary particle size of silicon dioxide granule in optical film can be by utilizing transmission electron microscope
(TEM) it is observed to find out.The size distribution of silicon dioxide granule before forming optical film can use commercially available laser
Diffraction-type particle size distribution meter is found out.
In optical film of the present embodiment, inorganic material is 0 mass % or more, 90 mass % or less.Preferably 10 matter
60 mass % of % or more is measured hereinafter, further preferably 20 mass % or more, 50 mass % or less.If polyimides system macromolecule
And the match ratio of polyamide and inorganic material (silicon materials) then exists in above-mentioned range and is easy while realizing the saturating of optical film
The trend of bright property and mechanical strength.
(ultraviolet absorbing agent)
Optical film can contain one kind or two or more ultraviolet absorbing agent.Ultraviolet absorbing agent can be from resin material
It is often used as properly selecting in the substance of ultraviolet absorbing agent in field.Ultraviolet absorbing agent, which may include, absorbs 400nm
The compound of the light of wavelength below.As ultraviolet absorbing agent, for example, can enumerate selected from by benzophenone based compound, water
At least one kind of compound in the group of poplar acid esters based compound, benzotriazole based compound and triazine based compound composition.
It should be noted that in this specification, it is so-called " based compound ", refer to the compound for being somebody's turn to do " based compound "
Derivative.For example, so-called " benzophenone based compound ", refers to the benzophenone as precursor skeleton and have and be bonded to two
The compound of the substituent group of Benzophenone.
(other additives)
Optical film can further contain other additives in the range of not damaging the transparency and bendability.As other
Ingredient, for example, can enumerate the colorants such as antioxidant, release agent, stabilizer, blueing agent, fire retardant, lubricant, thickener and
Levelling agent (leveling agent) etc..
For the quality of optical film, the ingredient other than resin component and inorganic material is preferably 0% or more 20 matter
Measure % or less.Further preferably greater than 0% and be 10 mass % or less.
(manufacturing method)
Next, being illustrated to an example of the manufacturing method of the optical film of present embodiment.
Varnish used in the production of optical film of the present embodiment can for example be prepared in the following manner: will be made
The polyimides system high score obtained from the substance reaction in aforementioned tetracarboxylic compound, aforementioned diamines and other aforementioned raw materials
Reaction solution, aforementioned solvents and the aforementioned ultraviolet absorbing agent used as needed and aforementioned other of son and/or polyamide add
Agent is added to be mixed, stirred.Also it can replace the reaction solution of polyimides system macromolecule etc., and use the polyimides system bought
The solution of macromolecule etc., the solid bought polyimides system macromolecule etc. solution.
Next, being coated on resin base material, stainless steel band or glass baseplate using known roll-to-roll, batch mode
Above-mentioned liquid is removed by the dried coating film and from substrate, is thus obtained containing polyimides system macromolecule to form film
Film.Can also after removing further progress film drying.
The drying of film is by carrying out solvent evaporation in 50~350 DEG C of temperature.It can be under atmosphere, nonactive gas
It is dried under atmosphere or under conditions of decompression is lower.
As the example of resin base material, PET, PEN, polyimides, polyamidoimide etc. can be enumerated.
The resin of excellent heat resistance is preferred.Particularly, from the viewpoint of the adaptation and cost with film, PET base
Material is preferred.
Then, the end EP of film is coloured.Coloring can for example be implemented by being dyed with dyestuff to end EP.
For example, the dyeing of end can be carried out if being coated with dye solution in end EP.Dyestuff is not particularly limited.Pass through
The adjustment of cooperation, the concentration of dyestuff in dye solution etc. can easily control the pattern of coloring.
In addition, the coloring of end EP can also be carried out by irradiation laser.Preferred laser is CO2Laser.Specifically,
By utilizing CO2Film cutting ingot is desired size by laser, can form the end EP coloured along end face EF.It is based on
The coloring principle of the end EP of laser irradiation is although indefinite, but thinks the ingredient in film, such as polyimides based compound
Modification contributes.
In the case where using laser, the cutting of laser irradiating part can also be carried out, it therefore, can be same with the cutting processing of film
When carry out the coloring of end, process can be made easy.
As the method for coloring of the control based on laser, method, the control laser of the structure for changing polyimides can be enumerated
Output power method etc..For example, then being deposited if the polyimides for the structure in a part of main chain including fatty family
The trend got higher is easy in the lightness of coloring.In the case where the polyimides of all aromatic system, there are the lightness of the coloring of end
It is easy the trend being lower.If reducing laser output power, there is the trend that the lightness of coloring is got higher, therefore, if increasing laser
Output power can then further decrease the lightness of coloring.
It should be noted that the polyimides of so-called all aromatic system, refers to each structure in above-mentioned formula (10)~(13)
G and A both of which has the polyimides of aromatic group in formula.
(purposes)
Such optical film is preferably used as the front panel of flexible device.Flexible device of the present embodiment has soft
Sexual function layer and above-mentioned optical film that is Chong Die with flexibility function layer and being functioned as front panel.That is, before flexible device
Plate is configured in the viewing side on flexibility function layer.The front panel has the function of protecting flexibility function layer.
As the example of flexible device, image display device (flexible display, Electronic Paper etc.), solar battery can be enumerated
Deng.For example, display function layer, solar battery functional layer become flexibility function layer.
Fig. 2 shows an examples of flexible display.The flexible display 100 successively has front panel from surface side (viewing side)
110/ polarization board protective film 120B/ polaroid 120A/ polarization board protective film 120B/ touch sensor film, 130/ organic EL element layer
140/TFT substrate 150 is such to be constituted.The layer other than front panel 110 in flexible display 100 is flexibility function layer 190.Partially
Tabula rasa protective film 120B/ polaroid 120A/ polarization board protective film 120B constitutes polarizer 120.Surface and each interlayer in each layer
It may include hard conating, adhesive layer, adhesive layer, phase separation layer etc..As front panel 110, above-mentioned optical film 10 can be used.Institute
Stating flexible display can be used as the image displaying part of tablet computer, smart phone, portable game etc..
The flexible device being related to according to the present embodiment has used above-mentioned optical film 10 as front panel 110.Optical film
10 end EP is coloured, and the light leakage from end face EF to outside is able to suppress.
By the coloring of end EP, through-thickness is able to suppress by the light in film center, scattering occurs from end face leakage
The phenomenon that.Reflection, the absorption etc. for thinking the light by coloured part, towards the optical attenuation of end face EF, as a result, the light leakage from end
It is inhibited.
It should be noted that surface additional ultraviolet absorbed layer, the hard conating, bonding of the optical film can also be formed in
Laminated body obtained from the various functions layers such as layer, form and aspect regulating course, adjustable refractive index layer.
Embodiment
Hereinafter, further illustrating the present invention by Examples and Comparative Examples, but the present invention is not limited to implementations below
Example.
(embodiment 1)
By commercially available polyimides system Polymer Solution (Mitsubishi Gas Chemical Company, Inc. system
" Neopulim C6A20 ") (varnish 1) be cast on substrate and be filmed, obtain the polyimides system high score with a thickness of 50 μm
Sub- film blank (sometimes referred to as polyimides A).The refractive index of film blank is 1.56.Thereafter, CO is utilized2Laser is cut from film blank
The region of rectangle (100mm × 100mm) out, obtains optical film.
CO2The condition of laser irradiation is as follows.
Device: KEYENCE corporation ML-Z9510T
Wavelength: 9.3 μm
Output power: 80%
Process velocity: 150mm/ seconds
The end EP of film is coloured.The Munsell colour system of film end EP in white background and light green color background
In form and aspect be 5YR, lightness 9, chroma 2.
(preparation of varnish 2)
By Mitsubishi Gas Chemical Company, Inc. polyimides system Polymer Solution " Neopulim
C6A20 " (gamma-butyrolacton solvent, 22 mass %), disperse solid constituent concentration is the dioxy of 30 mass % in gamma-butyrolacton
Solution obtained from SiClx particle, the dimethylacetamide solution of the alkoxy silane with amino and water are mixed, stirring
30 minutes, obtain Polymer Solution (varnish 2).Here, make silica and the high molecular mass ratio 30 of polyimides system:
70, make the amount of the alkoxy silane with amino relative to high molecular total 100 mass parts of silica and polyimides system
For be 1.67 parts, making water phase is 10 mass parts for total 100 mass parts of silica and polyimides.
(embodiment 2)
Other than obtaining polymeric membrane blank (sometimes referred to as polyimides B) by varnish 2, grasp similarly to Example 1
Make.The end EP of film is coloured.In the Munsell colour system of film end EP in white background and light green color background
Form and aspect are 5YR, lightness 9, chroma 2.The refractive index of film blank is 1.57.
(preparation of varnish 3)
Polyimides system macromolecule (river village industry (strain) KPI-MX300F processed) is dissolved in gamma-butyrolacton, height is obtained
Molecular concentration is the Polymer Solution (varnish 3) of 18 mass %.
(embodiment 3)
Using varnish 3, and make film blank (referred to as polyimides C) with a thickness of 80 μm, and make CO2The item of laser irradiation
Part is as follows, in addition to this, operates similarly with example 1.The refractive index of film blank is 1.56.
Device: COHERENT corporation E400iCL
Optical system: digital scanner f θ lens 70mm × 70mm
Wavelength: 9.4 μm
Output power: 17W
Process velocity: 400mm/ seconds
Frequency: 60kHz
The end EP of film is coloured.The Munsell colour system of film end EP in white background and light green color background
In form and aspect be 7.5YR, lightness 2, chroma 4.
(comparative example 1)
It grasps similarly to Example 2 in addition to this in the region that rectangle is cut into from film blank using cutter (shear knife)
Make.The end EP of film is not coloured.Munsell evaluation of estimate in white background and light green color background is as shown in table 1.
(comparative example 2)
It grasps similarly to Example 3 in addition to this in the region that rectangle is cut into from film blank using cutter (shear knife)
Make.The end EP of film is not coloured.Munsell evaluation of estimate in white background and light green color background is as shown in table 1.
(evaluation)
It evaluates as described below from the light leakage of end face EF.The film of 10cm square is held on to the 10cm of stainless steel
2 frames (frame) of square, wide 1cm, thickness 1.5mm, with fixture fixed frame.It is industrial using being counted when the woods for having removed lens
The output power of device is set as maximum, to the central portion of the frame of frame in darkroom by (strain) LA-HDF15T processed (LED light source)
Divide and carries out light irradiation.The frame from side, to from being carried out from the light leakage of the end face EF of the film clamped by frame.It will be observed that
The case where light leakage is evaluated as ×, zero will be evaluated as the case where inhibiting light leakage.The results are shown in Table 1.For comparative example,
It inhibits in the embodiment that end EP has coloring from end face EF light leakage.
[table 1]
Description of symbols
10 ... optical films, 100 ... flexible displays.
Claims (8)
1. optical film is containing the high molecular transparent optical film of polyimides system, the end of the optical film is coloured.
2. optical film as described in claim 1, wherein for the coloring of the end, in Munsell colour system
It in the form and aspect in the background of white with 2YR~3Y, or is netrual colour.
3. optical film as described in claim 1, wherein for the coloring of the end, in Munsell colour system
In the form and aspect in the background of white with 3YR~10YR.
4. optical film according to any one of claims 1 to 3, with a thickness of 20~100 μm.
5. the manufacturing method of optical film, wherein coloured end by laser irradiation.
6. the manufacturing method of optical film as claimed in claim 5, wherein optical film is high molecular containing polyimides system
Bright optical film.
7. flexible device front panel has optical film according to any one of claims 1 to 4.
8. flexible device, with flexibility function layer and optical film according to any one of claims 1 to 4.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
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| JP2016194046 | 2016-09-30 | ||
| JP2016-194046 | 2016-09-30 | ||
| PCT/JP2017/034273 WO2018062032A1 (en) | 2016-09-30 | 2017-09-22 | Optical film and method for manufacturing optical film |
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| CN109791238A true CN109791238A (en) | 2019-05-21 |
| CN109791238B CN109791238B (en) | 2022-02-22 |
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| JP (1) | JP7242166B2 (en) |
| KR (2) | KR20190107751A (en) |
| CN (1) | CN109791238B (en) |
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| JP2020037675A (en) * | 2018-08-29 | 2020-03-12 | 住友化学株式会社 | Optical film |
| WO2020138046A1 (en) * | 2018-12-28 | 2020-07-02 | 住友化学株式会社 | Optical film |
| JP7365211B2 (en) * | 2019-12-02 | 2023-10-19 | 住友化学株式会社 | optical film |
| JP7382810B2 (en) * | 2018-12-28 | 2023-11-17 | 住友化学株式会社 | optical film |
| CN113227212A (en) * | 2018-12-28 | 2021-08-06 | 住友化学株式会社 | Optical film |
| CN111381295A (en) * | 2018-12-28 | 2020-07-07 | 住友化学株式会社 | Optical film |
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Also Published As
| Publication number | Publication date |
|---|---|
| JP7242166B2 (en) | 2023-03-20 |
| KR20180048958A (en) | 2018-05-10 |
| CN109791238B (en) | 2022-02-22 |
| TW201818097A (en) | 2018-05-16 |
| JP2018060180A (en) | 2018-04-12 |
| KR20190107751A (en) | 2019-09-20 |
| KR102021996B1 (en) | 2019-09-17 |
| WO2018062032A1 (en) | 2018-04-05 |
| TWI730182B (en) | 2021-06-11 |
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