WO2007116972A1 - ワイヤグリッド型偏光子およびその製造方法 - Google Patents
ワイヤグリッド型偏光子およびその製造方法 Download PDFInfo
- Publication number
- WO2007116972A1 WO2007116972A1 PCT/JP2007/057773 JP2007057773W WO2007116972A1 WO 2007116972 A1 WO2007116972 A1 WO 2007116972A1 JP 2007057773 W JP2007057773 W JP 2007057773W WO 2007116972 A1 WO2007116972 A1 WO 2007116972A1
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- WIPO (PCT)
- Prior art keywords
- fluorine
- wire grid
- photocurable composition
- grid polarizer
- group
- Prior art date
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- LEVVHYCKPQWKOP-UHFFFAOYSA-N [Si].[Ge] Chemical compound [Si].[Ge] LEVVHYCKPQWKOP-UHFFFAOYSA-N 0.000 description 1
- 230000032900 absorption of visible light Effects 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 150000001252 acrylic acid derivatives Chemical class 0.000 description 1
- 125000003647 acryloyl group Chemical group O=C([*])C([H])=C([H])[H] 0.000 description 1
- 125000005073 adamantyl group Chemical group C12(CC3CC(CC(C1)C3)C2)* 0.000 description 1
- 125000004453 alkoxycarbonyl group Chemical group 0.000 description 1
- 150000001346 alkyl aryl ethers Chemical class 0.000 description 1
- 125000002877 alkyl aryl group Chemical group 0.000 description 1
- HTKFORQRBXIQHD-UHFFFAOYSA-N allylthiourea Chemical compound NC(=S)NCC=C HTKFORQRBXIQHD-UHFFFAOYSA-N 0.000 description 1
- 229960001748 allylthiourea Drugs 0.000 description 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- 150000001408 amides Chemical class 0.000 description 1
- 150000001412 amines Chemical class 0.000 description 1
- 125000003277 amino group Chemical group 0.000 description 1
- 150000008378 aryl ethers Chemical class 0.000 description 1
- 125000003118 aryl group Chemical group 0.000 description 1
- 239000012298 atmosphere Substances 0.000 description 1
- 125000004429 atom Chemical group 0.000 description 1
- JRPBQTZRNDNNOP-UHFFFAOYSA-N barium titanate Chemical compound [Ba+2].[Ba+2].[O-][Ti]([O-])([O-])[O-] JRPBQTZRNDNNOP-UHFFFAOYSA-N 0.000 description 1
- 229910002113 barium titanate Inorganic materials 0.000 description 1
- 235000013405 beer Nutrition 0.000 description 1
- WPYMKLBDIGXBTP-UHFFFAOYSA-N benzoic acid Chemical compound OC(=O)C1=CC=CC=C1 WPYMKLBDIGXBTP-UHFFFAOYSA-N 0.000 description 1
- 229960003328 benzoyl peroxide Drugs 0.000 description 1
- 235000019400 benzoyl peroxide Nutrition 0.000 description 1
- 229960003237 betaine Drugs 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- MQDJYUACMFCOFT-UHFFFAOYSA-N bis[2-(1-hydroxycyclohexyl)phenyl]methanone Chemical compound C=1C=CC=C(C(=O)C=2C(=CC=CC=2)C2(O)CCCCC2)C=1C1(O)CCCCC1 MQDJYUACMFCOFT-UHFFFAOYSA-N 0.000 description 1
- 229910000416 bismuth oxide Inorganic materials 0.000 description 1
- 229930006711 bornane-2,3-dione Natural products 0.000 description 1
- HQABUPZFAYXKJW-UHFFFAOYSA-N butan-1-amine Chemical compound CCCCN HQABUPZFAYXKJW-UHFFFAOYSA-N 0.000 description 1
- 125000000484 butyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- 150000005609 butylarylethers Chemical class 0.000 description 1
- 229910021393 carbon nanotube Inorganic materials 0.000 description 1
- 239000002041 carbon nanotube Substances 0.000 description 1
- 150000007942 carboxylates Chemical class 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 229910000420 cerium oxide Inorganic materials 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 229910052804 chromium Inorganic materials 0.000 description 1
- 239000011651 chromium Substances 0.000 description 1
- 229910000428 cobalt oxide Inorganic materials 0.000 description 1
- IVMYJDGYRUAWML-UHFFFAOYSA-N cobalt(ii) oxide Chemical compound [Co]=O IVMYJDGYRUAWML-UHFFFAOYSA-N 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 229920001940 conductive polymer Polymers 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 229910000431 copper oxide Inorganic materials 0.000 description 1
- NZNMSOFKMUBTKW-UHFFFAOYSA-M cyclohexanecarboxylate Chemical compound [O-]C(=O)C1CCCCC1 NZNMSOFKMUBTKW-UHFFFAOYSA-M 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- LSXWFXONGKSEMY-UHFFFAOYSA-N di-tert-butyl peroxide Chemical compound CC(C)(C)OOC(C)(C)C LSXWFXONGKSEMY-UHFFFAOYSA-N 0.000 description 1
- 125000004663 dialkyl amino group Chemical group 0.000 description 1
- 229910003460 diamond Inorganic materials 0.000 description 1
- 239000010432 diamond Substances 0.000 description 1
- TYIXMATWDRGMPF-UHFFFAOYSA-N dibismuth;oxygen(2-) Chemical compound [O-2].[O-2].[O-2].[Bi+3].[Bi+3] TYIXMATWDRGMPF-UHFFFAOYSA-N 0.000 description 1
- 238000007607 die coating method Methods 0.000 description 1
- REQPQFUJGGOFQL-UHFFFAOYSA-N dimethylcarbamothioyl n,n-dimethylcarbamodithioate Chemical compound CN(C)C(=S)SC(=S)N(C)C REQPQFUJGGOFQL-UHFFFAOYSA-N 0.000 description 1
- 238000003618 dip coating Methods 0.000 description 1
- 238000004821 distillation Methods 0.000 description 1
- 125000003438 dodecyl group Chemical group [H]C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])* 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000010894 electron beam technology Methods 0.000 description 1
- 125000003700 epoxy group Chemical group 0.000 description 1
- 125000004185 ester group Chemical group 0.000 description 1
- 238000005530 etching Methods 0.000 description 1
- 125000005448 ethoxyethyl group Chemical group [H]C([H])([H])C([H])([H])OC([H])([H])C([H])([H])* 0.000 description 1
- 125000001495 ethyl group Chemical group [H]C([H])([H])C([H])([H])* 0.000 description 1
- 239000010419 fine particle Substances 0.000 description 1
- 229920002313 fluoropolymer Polymers 0.000 description 1
- 239000004811 fluoropolymer Substances 0.000 description 1
- 229910003472 fullerene Inorganic materials 0.000 description 1
- 125000003055 glycidyl group Chemical group C(C1CO1)* 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 229910002804 graphite Inorganic materials 0.000 description 1
- 239000010439 graphite Substances 0.000 description 1
- 125000005842 heteroatom Chemical group 0.000 description 1
- FUZZWVXGSFPDMH-UHFFFAOYSA-N hexanoic acid Chemical compound CCCCCC(O)=O FUZZWVXGSFPDMH-UHFFFAOYSA-N 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 239000011630 iodine Substances 0.000 description 1
- 229910052740 iodine Inorganic materials 0.000 description 1
- 230000001678 irradiating effect Effects 0.000 description 1
- 125000000468 ketone group Chemical group 0.000 description 1
- 229910052747 lanthanoid Inorganic materials 0.000 description 1
- 150000002602 lanthanoids Chemical class 0.000 description 1
- HFGPZNIAWCZYJU-UHFFFAOYSA-N lead zirconate titanate Chemical compound [O-2].[O-2].[O-2].[O-2].[O-2].[Ti+4].[Zr+4].[Pb+2] HFGPZNIAWCZYJU-UHFFFAOYSA-N 0.000 description 1
- 229910052451 lead zirconate titanate Inorganic materials 0.000 description 1
- 229910003002 lithium salt Inorganic materials 0.000 description 1
- 159000000002 lithium salts Chemical class 0.000 description 1
- 229910052749 magnesium Inorganic materials 0.000 description 1
- 239000011777 magnesium Substances 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 229910001092 metal group alloy Inorganic materials 0.000 description 1
- FQPSGWSUVKBHSU-UHFFFAOYSA-N methacrylamide Chemical compound CC(=C)C(N)=O FQPSGWSUVKBHSU-UHFFFAOYSA-N 0.000 description 1
- 239000002116 nanohorn Substances 0.000 description 1
- 229910001172 neodymium magnet Inorganic materials 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 125000000449 nitro group Chemical group [O-][N+](*)=O 0.000 description 1
- 125000004433 nitrogen atom Chemical group N* 0.000 description 1
- 125000002524 organometallic group Chemical group 0.000 description 1
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 description 1
- BMMGVYCKOGBVEV-UHFFFAOYSA-N oxo(oxoceriooxy)cerium Chemical compound [Ce]=O.O=[Ce]=O BMMGVYCKOGBVEV-UHFFFAOYSA-N 0.000 description 1
- SIWVEOZUMHYXCS-UHFFFAOYSA-N oxo(oxoyttriooxy)yttrium Chemical compound O=[Y]O[Y]=O SIWVEOZUMHYXCS-UHFFFAOYSA-N 0.000 description 1
- 125000005702 oxyalkylene group Chemical group 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 150000002978 peroxides Chemical class 0.000 description 1
- YDZANNORUSYHFB-UHFFFAOYSA-N phenacyl benzoate Chemical compound C=1C=CC=CC=1C(=O)COC(=O)C1=CC=CC=C1 YDZANNORUSYHFB-UHFFFAOYSA-N 0.000 description 1
- IMACFCSSMIZSPP-UHFFFAOYSA-N phenacyl chloride Chemical compound ClCC(=O)C1=CC=CC=C1 IMACFCSSMIZSPP-UHFFFAOYSA-N 0.000 description 1
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 description 1
- 125000004437 phosphorous atom Chemical group 0.000 description 1
- 229910052698 phosphorus Inorganic materials 0.000 description 1
- 239000000049 pigment Substances 0.000 description 1
- 239000000088 plastic resin Substances 0.000 description 1
- 229920001223 polyethylene glycol Polymers 0.000 description 1
- 238000006116 polymerization reaction Methods 0.000 description 1
- 150000004032 porphyrins Chemical class 0.000 description 1
- 238000004382 potting Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000007348 radical reaction Methods 0.000 description 1
- 229910052703 rhodium Inorganic materials 0.000 description 1
- 239000010948 rhodium Substances 0.000 description 1
- MHOVAHRLVXNVSD-UHFFFAOYSA-N rhodium atom Chemical compound [Rh] MHOVAHRLVXNVSD-UHFFFAOYSA-N 0.000 description 1
- 238000007650 screen-printing Methods 0.000 description 1
- 229910021332 silicide Inorganic materials 0.000 description 1
- FVBUAEGBCNSCDD-UHFFFAOYSA-N silicide(4-) Chemical compound [Si-4] FVBUAEGBCNSCDD-UHFFFAOYSA-N 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 description 1
- 229910010271 silicon carbide Inorganic materials 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 description 1
- 229910001923 silver oxide Inorganic materials 0.000 description 1
- 238000002603 single-photon emission computed tomography Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 125000004079 stearyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- 125000003011 styrenyl group Chemical class [H]\C(*)=C(/[H])C1=C([H])C([H])=C([H])C([H])=C1[H] 0.000 description 1
- BDHFUVZGWQCTTF-UHFFFAOYSA-M sulfonate Chemical compound [O-]S(=O)=O BDHFUVZGWQCTTF-UHFFFAOYSA-M 0.000 description 1
- 229910052717 sulfur Inorganic materials 0.000 description 1
- 125000004434 sulfur atom Chemical group 0.000 description 1
- UWHCKJMYHZGTIT-UHFFFAOYSA-N tetraethylene glycol Chemical compound OCCOCCOCCOCCO UWHCKJMYHZGTIT-UHFFFAOYSA-N 0.000 description 1
- XOLBLPGZBRYERU-UHFFFAOYSA-N tin dioxide Chemical compound O=[Sn]=O XOLBLPGZBRYERU-UHFFFAOYSA-N 0.000 description 1
- 229910001887 tin oxide Inorganic materials 0.000 description 1
- 239000010936 titanium Substances 0.000 description 1
- 229910052719 titanium Inorganic materials 0.000 description 1
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 description 1
- TUQOTMZNTHZOKS-UHFFFAOYSA-N tributylphosphine Chemical compound CCCCP(CCCC)CCCC TUQOTMZNTHZOKS-UHFFFAOYSA-N 0.000 description 1
- ZIBGPFATKBEMQZ-UHFFFAOYSA-N triethylene glycol Chemical compound OCCOCCOCCO ZIBGPFATKBEMQZ-UHFFFAOYSA-N 0.000 description 1
- ITMCEJHCFYSIIV-UHFFFAOYSA-M triflate Chemical compound [O-]S(=O)(=O)C(F)(F)F ITMCEJHCFYSIIV-UHFFFAOYSA-M 0.000 description 1
- 125000002023 trifluoromethyl group Chemical group FC(F)(F)* 0.000 description 1
- 229940070710 valerate Drugs 0.000 description 1
- NQPDZGIKBAWPEJ-UHFFFAOYSA-N valeric acid Chemical compound CCCCC(O)=O NQPDZGIKBAWPEJ-UHFFFAOYSA-N 0.000 description 1
- 229920001567 vinyl ester resin Polymers 0.000 description 1
- 238000004383 yellowing Methods 0.000 description 1
- 229910052725 zinc Inorganic materials 0.000 description 1
- 239000011701 zinc Substances 0.000 description 1
- 239000011787 zinc oxide Substances 0.000 description 1
- 229910000859 α-Fe Inorganic materials 0.000 description 1
Classifications
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B5/00—Optical elements other than lenses
- G02B5/30—Polarising elements
- G02B5/3025—Polarisers, i.e. arrangements capable of producing a definite output polarisation state from an unpolarised input state
- G02B5/3058—Polarisers, i.e. arrangements capable of producing a definite output polarisation state from an unpolarised input state comprising electrically conductive elements, e.g. wire grids, conductive particles
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B5/00—Optical elements other than lenses
- G02B5/30—Polarising elements
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B82—NANOTECHNOLOGY
- B82Y—SPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES; MEASUREMENT OR ANALYSIS OF NANOSTRUCTURES; MANUFACTURE OR TREATMENT OF NANOSTRUCTURES
- B82Y10/00—Nanotechnology for information processing, storage or transmission, e.g. quantum computing or single electron logic
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B82—NANOTECHNOLOGY
- B82Y—SPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES; MEASUREMENT OR ANALYSIS OF NANOSTRUCTURES; MANUFACTURE OR TREATMENT OF NANOSTRUCTURES
- B82Y40/00—Manufacture or treatment of nanostructures
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F214/00—Copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen
- C08F214/18—Monomers containing fluorine
- C08F214/186—Monomers containing fluorine with non-fluorinated comonomers
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03F—PHOTOMECHANICAL PRODUCTION OF TEXTURED OR PATTERNED SURFACES, e.g. FOR PRINTING, FOR PROCESSING OF SEMICONDUCTOR DEVICES; MATERIALS THEREFOR; ORIGINALS THEREFOR; APPARATUS SPECIALLY ADAPTED THEREFOR
- G03F7/00—Photomechanical, e.g. photolithographic, production of textured or patterned surfaces, e.g. printing surfaces; Materials therefor, e.g. comprising photoresists; Apparatus specially adapted therefor
- G03F7/0002—Lithographic processes using patterning methods other than those involving the exposure to radiation, e.g. by stamping
Definitions
- the present invention relates to a wire grid polarizer and a manufacturing method thereof.
- Absorbing polarizers and reflective polarizers are used as polarizers that exhibit polarization separation in the visible light region and are used in image display devices such as liquid crystal display devices, rear projection televisions, and front projectors. is there.
- An absorptive polarizer is, for example, a polarizer in which a dichroic dye such as iodine is oriented in a resin film.
- the absorption polarizer absorbs one polarized light, so that the light use efficiency is low.
- a reflective polarizer can increase the light utilization efficiency by allowing light reflected without entering the polarizer to re-enter the polarizer. Therefore, there is an increasing need for reflective polarizers for the purpose of increasing the brightness of liquid crystal display devices and the like.
- Examples of the reflective polarizer include a linear polarizer made of a birefringent resin laminate, a circular polarizer made of cholesteric liquid crystal, and a wire grid polarizer.
- linear polarizers and circular polarizers have low polarization separation ability. For this reason, wire grid polarizers that exhibit high polarization separation are attracting attention.
- a wire grid polarizer has a structure in which a plurality of fine metal wires are arranged in parallel on a transparent substrate.
- the pitch of the fine metal wires is sufficiently shorter than the wavelength of the incident light, the component of the incident light that has an electric field vector orthogonal to the fine metal wires (ie, P-polarized light) is transmitted and has an electric field vector parallel to the fine metal wires (Ie S-polarized light) is reflected.
- Patent Document 1 A wire grid polarizer in which a plurality of fine metal wires are arranged in parallel on a glass substrate.
- Patent Document 4 A wire grid polarizer in which fine metal wires are formed in a plurality of grooves formed in the resin layer.
- the wire grid polarizers (1) and (2) are manufactured by patterning a metal film deposited on a substrate by a lithography method using DUV (deep ultraviolet light) having a wavelength of 193 nm. Therefore, there are problems in productivity and large area due to many manufacturing processes.
- DUV deep ultraviolet light
- thermoplastic resin When thermoplastic resin is used as the resin film, there are problems in heat resistance and durability. In rear projection televisions and front projectors, etc., it is assumed that the light source with higher energy will be used with higher energy, so it is assumed that it will be used above the soft spot of the resin. Is required.
- Patent Document 1 International Publication No. OOZ079317 Pamphlet
- Patent Document 2 JP 2005-195824
- Patent Document 3 Japanese Patent Laid-Open No. 2005-316495
- Patent Document 4 Japanese Unexamined Patent Publication No. 2005-070456
- the present invention provides a wire grid polarizer exhibiting high polarization separation ability in the visible light region and excellent in heat resistance and durability, and the wire grid polarizer can be produced with high productivity, and has a large area.
- a manufacturing method that can be used is provided.
- the method for producing a wire grid polarizer of the present invention includes a step of applying a photocurable composition on a support substrate, and a mold in which a plurality of grooves are formed in parallel with each other at a constant pitch. A step of pressing the photocurable composition so as to come into contact with the photocurable composition, and curing the photocurable composition with the mold pressed against the photocurable composition. Forming a light-transmitting substrate having a plurality of ridges corresponding to the grooves of the mold, separating the mold from the light-transmitting substrate, and forming a metal thin wire on the ridges of the light-transmitting substrate; It is characterized by having.
- the method for producing a wire grid polarizer of the present invention may further include a step of separating the support substrate from the light transmissive substrate.
- photocurable composition it is preferable to use a photocurable resin having the following physical properties after curing.
- photocurable composition it is preferable to use the following photocurable composition as the photocurable composition.
- fluorine-containing monomer of the photocurable yarn composition it is preferable to use a fluorine-containing monomer represented by the following formula (1) or (2).
- R 1 and R 2 each independently represent a hydrogen atom, a fluorine atom, an alkyl group having 1 to 3 carbon atoms, or a fluoroalkyl group having 1 to 3 carbon atoms
- Q is an oxygen atom
- a group represented by NR 3- (wherein R 3 represents a hydrogen atom, an alkyl group having 1 to 6 carbon atoms, an alkyl carbo ol group or a tosyl group), or a functional group 2 Indicates a valent organic group.
- n represents an integer of 1 to 4
- X represents a hydrogen atom, a fluorine atom, a methyl group or a tri Furuoromechiru group
- R F denotes an n monovalent fluorine-containing organic group having 1 to 30 carbon atoms .
- An oblique vapor deposition method is used as a process for forming a thin metal wire on the ridge of the light-transmitting substrate. It is preferable.
- the pitch of the mold grooves is preferably 300 nm or less.
- the wire grid polarizer of the present invention is manufactured by the method for manufacturing a wire grid polarizer of the present invention.
- the wire grid polarizer of the present invention is highly visible in the visible light region, exhibits polarization separation ability, and is excellent in heat resistance and durability.
- a wire grid polarizer that exhibits high polarization separation ability in the visible light region and is excellent in heat resistance and durability can be manufactured with high productivity and is large. You can make an area.
- FIG. 1 is a perspective view showing an example of a wire grid polarizer of the present invention.
- FIG. 2 is a cross-sectional view showing each step in the method for producing a wire grid polarizer of the present invention.
- FIG. 3 is a cross-sectional view showing each step in the method for manufacturing a wire grid polarizer of the present invention.
- FIG. 4 is a perspective view showing an example of a mold used in the method for producing a wire grid polarizer of the present invention.
- the monomer represented by the formula (1) is referred to as a monomer (1).
- FIG. 1 is a perspective view showing an example of a wire grid polarizer of the present invention.
- the wire grid polarizer 10 includes a light-transmitting substrate 14 made of a photo-curing resin having a plurality of protrusions 12 formed on the surface in parallel with each other at a constant pitch Pp, and the protrusions 12 of the light-transmitting substrate 14. It has a fine metal wire 16 formed on it.
- the pitch Pp of the ridges 12 is the sum of the width Dp of the ridges 12 and the width of the grooves formed between the ridges 12.
- the pitch Pp of the ridges 12 is preferably 50 to 200 nm, preferably 300 nm or less.
- the wire grid polarizer 10 has a sufficiently high reflectance and a high polarization separation ability even in a short wavelength region of about 400 nm.
- the coloring phenomenon due to diffraction can be suppressed.
- the ratio (Dp / Pp) between the width Dp of the ridges 12 and the pitch Pp (Dp / Pp) is preferably 0.1 to 0.6 force, more preferably 0.4 to 0.55.
- the height Hp of the ridges 12 is preferably 50 to 500 nm, more preferably 100 to 300 nm. By making the height Hp 50 nm or more, selective formation of the fine metal wires 16 on the ridges 12 becomes easy. By setting the height Hp to 500 nm or less, the incident angle dependency of the polarization degree of the wire grid polarizer 10 is reduced.
- the width Dm of the fine metal wire 16 is preferably the same as the width Dp of the ridge 12.
- the height Hm of the fine metal wire 16 is 30 to 300 nm force, more preferably 100 to 150 nm force. .
- the wire grid polarizer 10 exhibits a sufficiently high reflectivity and polarization separation ability. Increasing the height Hm to 300nm or less increases the light utilization efficiency.
- the light transmissive substrate is a substrate made of a photo-curing resin.
- the light transmissive property means that light is transmitted.
- the thickness H of the light-transmitting substrate is from 0.5 to: LOOO / zm force S, preferably from 1 to 40 / zm force S.
- the photocurable resin from the viewpoint of productivity, the photocurable composition A resin formed by photoradical polymerization is preferred.
- the refractive index (nd) of the photocurable resin is preferably 1.3 to 1.6.
- the transmittance of P-polarized light in the blue light region is increased, and high polarization separation ability is exhibited over a wide band.
- the refractive index (nd) is the Abbe refractometer (589 nm,
- the visible light transmittance of the photocurable resin is preferably 93% or more when the thickness is 200 m.
- the transmittance of P-polarized light increases and the polarization separation ability increases.
- Visible light transmittance is 400 ⁇ using an integral light transmittance meter. Calculated by the ratio (T2 X 100ZT1) of total light intensity T1 of sample light up to 780nm and sample transmitted light T2.
- the water contact angle of the photocurable resin is preferably 90 ° or more. If the contact angle of water is 90 ° or more, when forming the ridges by the optical imprint method described later, the mold releasability is improved, and high-accuracy transfer is possible, and the resulting wire grid is obtained. Type polarizers can fully perform their intended performance.
- the contact angle of water is measured using a contact angle measuring device.
- the Vicat softening point temperature of the photocurable resin is preferably 150 ° C or higher. If the Vicat softening point temperature force is 150 ° C or higher, the heat resistance will be high, and it can be fully adapted to applications that require heat resistance.
- the Vicat soft spot temperature is determined according to JIS K 7206.
- Examples of the photocured resin satisfying the above properties include those obtained by curing the following photocurable composition by photopolymerization.
- composition smoothness during coating, releasability during photoimprinting, and shape retention are improved.
- the viscosity of the photocurable composition is preferably 1 to 200 mPa's, more preferably 1 to 100 mPa's. If the viscosity is within this range, a smooth coating film can be easily formed by a technique such as spin coating.
- Viscosity is measured at a temperature of 25 ° C using a rotary viscometer.
- the photocurable composition contains 50 to 98% by mass, preferably 55 to 90% by mass, particularly preferably 55 to 90% by mass, of a fluorine atom-free! / ⁇ monomer (hereinafter referred to as a main component monomer). Contains 60-85% by weight.
- Examples of the main component monomer include monomers having a polymerizable group, and monomers having an acryloyl group or a methacryloyl group, monomers having a bulu group, monomers having a allyl group, and monomers having an oxyl group are preferable. More preferred are monomers having a taliloyl group or a methacryloyl group.
- the number of polymerizable groups in the main component monomer is preferably 1 to 4, more preferably 1 or 2, and particularly preferably 1.
- (meth) acrylic acid, (meth) acrylate, (meth) acrylamide, vinyl ether, vinyl ester, aryl ether, aryl ester, and styrene compounds are preferred (meth) acrylate.
- (Meth) acrylic acid is a generic name for acrylic acid and methacrylic acid
- (meth) acrylate is a generic name for acrylate and methacrylate
- (meth) acrylamide is a generic name for acrylamide and methacrylamide.
- Specific examples of (meth) acrylate include the following compounds.
- Tri (meth) acrylates such as trimethylolpropane tri (meth) acrylate and pentaerythritol tri (meth) acrylate.
- Methods atalylate having 4 or more polymerizable groups such as dipentaerythritol hexa (meth) atalylate.
- butyl ether examples include alkyl butyl ethers such as ethyl vinyl ether, propyl butyl ethere, isobutino levino eno ethenore, 2-ethino hexeno levino eno ethenore, cyclohexyl vinyl ether, and the like. 4 (Hydroxyalkyl) butyl such as hydroxybutyl beer ether.
- bur esters include butyl acetate, butyl propionate, and (iso) butyrate.
- -Bul esters such as val, valerate, cyclohexane carboxylate, and benzoate.
- allyl ethers include ethyl allyl ether and propyl allyl ether.
- alkylaryl ethers such as (iso) butylaryl ether and cyclohexyl aryl ether.
- aryl ester examples include alkyl aryl esters such as ethyl aryl ester, propyl aryl ester, and isobutyl aryl ester.
- Examples of the monomer having an oxyl group include a monomer having an epoxy group, a monomer having an oxacene group, and a monomer having an oxazoline group.
- the molecular weight of the main component monomer is preferably 100 to 500 force S, more preferably 200 to 400 force S.
- the main component monomer one kind may be used alone, or two or more kinds may be used in combination.
- the main component monomer preferably includes a monomer having a ring structure of the following formula in the molecule, from the viewpoint that the photocurable resin exhibits high visible light transmittance.
- the main component monomer preferably contains (meth) acrylate having two or more polymerizable groups in order to exhibit high heat resistance.
- (meth) acrylate having two or more polymerizable groups in order to exhibit high heat resistance.
- the photocurable composition comprises from 0.1 to 45 mass 0/0 of the fluorine-containing monomers, preferably including 10 to 40 mass%.
- the photocurable composition contains a fluorine-containing monomer having high compatibility with the main component monomer, the fluorine-containing surfactant, and the fluorine-containing polymer, phase separation is difficult. Further, the composition tends to form a cured product without phase separation. In addition, since it contains a fluorine-containing monomer, the water contact angle of the cured product is 90 ° or more. In addition, since it contains a fluorine-containing monomer, The refractive index is lowered, the transmittance in the short wavelength region is increased, and as a result, the polarization separation ability is improved.
- the fluorine-containing monomer is a fluorine-containing monomer having a polymerizable group, such as a fluorine-containing monomer having an alitaroyl group or a methacryloyl group, a fluorine-containing monomer having a bur group, a fluorine-containing monomer having a fluorovinyl group, or an aryl group.
- a fluorine-containing monomer having an alitaroyl group or a methacryloyl group such as a fluorine-containing monomer having an alitaroyl group or a methacryloyl group, a fluorine-containing monomer having a bur group, a fluorine-containing monomer having a fluorovinyl group, or an aryl group.
- the number of polymerizable groups in the fluorine-containing monomer is preferably 1 to 4, more preferably 1 or 2, and particularly preferably 1.
- the fluorine content of the fluorine-containing monomer is preferably 40 to 70 mass%, more preferably 45 to 65 mass%.
- the fluorine content is the ratio of the mass of fluorine atoms to the total mass of all atoms constituting the fluorine-containing monomer.
- the fluorine content of the fluorine-containing monomer is 40% by mass or more, the release property of the cured product is particularly excellent.
- the molecular weight of the fluorine-containing monomer is 200 to 5,000, more preferably 250 to 1,000,000.
- the fluorine-containing monomer may be used alone or in combination of two or more.
- monomer (1) or monomer (2) is particularly preferred.
- R 1 and R 2 each independently represent a hydrogen atom, a fluorine atom, an alkyl group having 1 to 3 carbon atoms, or a fluoroalkyl group having 1 to 3 carbon atoms, and Q is an oxygen atom.
- R 3 represents a hydrogen atom, an alkyl group having 1 to 6 carbon atoms, an alkyl carbo group or a tosyl group
- R 3 represents a functional group Good divalent organic group.
- n represents an integer of 1 to 4
- X is a hydrogen atom, a fluorine atom, or a methyl group represents a triflate Ruo Russia methyl
- R F is n monovalent fluorine-containing organic C1-30 Indicates a group.
- Q in the monomer (1) is a divalent organic group, methylene, dimethylene, trimethylene, tetramethylene, oxymethylene, oxydimethylene, oxytrimethylene, and dioxymethylene group power is selected.
- a hydrogen atom in the main chain is a fluorine atom, a hydroxyl group, an alkyl group having 1 to 6 carbon atoms, a hydroxyalkyl group having 1 to 6 carbon atoms, a carbon atom, or a carbon in which an etheric oxygen atom is inserted between carbon atoms.
- a group in which one or more hydrogen atoms forming a carbon-hydrogen bond is substituted with a fluorine atom is preferred.
- Specific examples of the monomer (1) include the following compounds.
- n in the monomer (2) is preferably 1 or 2.
- X is preferably a hydrogen atom or a methyl group.
- the carbon number of R F is preferably 4-24.
- R F is a monovalent fluorine-containing organic group.
- the monovalent fluorine-containing organic group is preferably a monovalent fluorine-containing organic group having a polyfluoroalkyl group in which an etheric oxygen atom may be inserted between a carbon atom and a carbon atom.
- the monovalent fluorine-containing organic group is preferably a monovalent fluorine-containing organic group having a polyfluoroalkyl group in which an etheric oxygen atom may be inserted between a carbon atom and a carbon atom.
- fl represents an integer of 1 to 3
- R F1 represents a carbon atom having 4 to 16 carbon atoms, a polyfluoroalkyl group in which an etheric oxygen atom may be inserted between carbon atoms
- R 4 represents A hydrogen atom, a methyl group, or an ethyl group is shown.
- R F1 a perfluoroalkyl group is preferred, and a linear perfluoroalkyl group is particularly preferred.
- R F is a divalent fluorine-containing organic group.
- the divalent fluorine-containing organic group is preferably a carbon atom—a polyfluoroalkylene group in which an etheric oxygen atom may be inserted between carbon atoms—a group represented by (CH 2 ) R F2 (CH 3) —.
- f2 and f3 each represent an integer of 1 to 3
- R F2 is a carbon atom having 4 to 16 carbon atoms, a polyfluoroalkylene group in which an etheric oxygen atom may be inserted between carbon atoms Indicates.
- R F2 is a linear perfluoroalkylene group, preferably a perfluoroalkylene group, or a perfluoroalkyl group having an etheric oxygen atom inserted between carbon atoms and a trifluoromethyl group in the side chain.
- An oxyalkylene group is particularly preferred.
- Specific examples of the monomer (2) include the following compounds.
- CH CHCOOCH CF CF H
- CH CHCOOCH (CF CF) H
- the photocurable yarn composition comprises more than 0.1 to 20% by mass of the fluorine-containing surfactant and / or fluorine-containing polymer, preferably 0.5 to: L0% by mass, and particularly preferably 1 to 5%. Including mass%. By setting the amount within this range, it is easy to form a cured product as soon as a photocurable composition is prepared without further phase separation of the composition.
- the photocurable composition may contain only the fluorine-containing polymer, which may or may not contain the fluorine-containing surfactant and fluorine-containing polymer.
- the content means the total amount of the fluorine-containing surfactant and the fluorine-containing polymer.
- fluorine-containing surfactant one kind may be used alone, or two or more kinds may be used in combination.
- Fluorine-containing polymers may be used alone or in combination of two or more.
- the cured product of the photocurable composition is excellent in releasability and can be smoothly peeled off from the mold.
- the fluorine content of the fluorine-containing surfactant is preferably 10 to 70% by mass, more preferably 20 to 40% by mass.
- the fluorine-containing surfactant may be water-soluble or fat-soluble.
- fluorine-containing surfactants ionic fluorine-containing surfactants, cationic fluorine-containing surfactants, amphoteric fluorine-containing surfactants and non-ionic fluorine-containing surfactants have preferable dispersibility. From the viewpoint of goodness, a nonionic fluorine-containing surfactant is particularly preferred.
- fluorinated surfactant containing fluorine polyfluoroalkyl carboxylate, polyfluoroalkyl phosphate, and polyfluoroalkyl sulfonate are preferable.
- Ronji fluorine-containing surfactants include Surflon S-111 (trade name, manufactured by Seimichemical), Florard FC—143 (trade name, manufactured by 3EM), MegaFuck F—120 (trade name) , Manufactured by Dainippon Ink & Chemicals, Inc.).
- the cationic fluorine-containing surfactant is preferably a trimethylammonium salt of polyfluoroalkylcarboxylic acid or a trimethylammonium salt of polyfluoroalkylsulfonic acid amide.
- Specific examples of cationic fluorine-containing surfactants include Surflon S—12 1 (trade name, manufactured by Seimi Chemical Co., Ltd.), Florad FC—134 (trade name, manufactured by 3EM), MegaFac F—450 (trade name, Dainippon Ink & Chemicals, Inc.).
- the amphoteric fluorine-containing surfactant is preferably polyfluoroalkyl betaine.
- Specific examples of the amphoteric fluorine-containing surfactant include Surflon S-132 (trade name, manufactured by Seimi Chemical Co., Ltd.), Florard FX-172 (trade name, manufactured by 3EM Co., Ltd.), and the like.
- non-ionic fluorine-containing surfactants include polyfluoroalkylamine oxides, polyfluoroalkyl-alkyleneoxide-attached products, oligomers or polymers containing monomer units based on monomers having a fluoroalkyl group, and the like. Can be mentioned.
- the fluoroalkyl group is preferably the polyfluoroalkyl group (R F1 ).
- an oligomer or polymer containing a monomer unit based on a monomer having a fluoroalkyl group preferably has a mass average molecular weight of 1000 to 8000 force S.
- the monomer having a fluoroalkyl group is particularly preferably a fluoroalkyl (meth) acrylate, which is preferably a fluoro (meth) acrylate.
- a fluoroalkyl (meth) acrylate a compound in which n in the monomer (2) is 1 and X is a hydrogen atom or a methyl group is preferable.
- non-ionic fluorine-containing surfactant examples include Surflon S-145 (trade name, manufactured by Seimi Chemical Co., Ltd.), Surflon S-393 (trade name, manufactured by Seimi Chemical Co., Ltd.), Surflon K H-20 (trade name, manufactured by Seimi Chemical Co., Ltd.), Surflon KH-40 (trade name, manufactured by Seimi Chemical Co., Ltd.), Florad FC-170 (trade name, manufactured by 3EM), Florad FC-430 (trade name, 3EM) ), Megafuck F-444 (trade name, manufactured by Dainippon Ink & Chemicals, Inc.), Megafuck F-479 (trade name, manufactured by Dainippon Ink & Chemicals, Inc.), and the like.
- the cured product of the photocurable composition is excellent in releasability and can be smoothly peeled off from the mold.
- the monomer is polymerized in the presence of the fluorine-containing polymer when the photocurable composition is cured, a cured product having a small volume shrinkage can be obtained. Therefore, the shape of the ridge formed on the surface of the cured product is highly accurate with respect to the shape of the mold groove.
- the fluorine-containing polymer means an oligomer or polymer other than a monomer unit based on a monomer having a fluoroalkyl group mentioned as a non-ionic fluorine-containing surfactant.
- the mass average molecular weight of the fluorine-containing polymer is preferably 500 to 100 000, preferably 1000 to 100,000, and particularly preferably 3000 to 50,000 in terms of compatibility with other components. ! / ⁇ .
- the fluorine content of the fluoropolymer is preferably 30 to 70% by mass, more preferably 45 to 70% by mass, from the viewpoint of excellent releasability.
- a fluorine-containing polymer containing a nitrogen atom, an oxygen atom, a sulfur atom, or a phosphorus atom which is preferable for a fluorine-containing polymer containing a hetero atom, is more preferable from the viewpoint of compatibility.
- a fluorine-containing polymer containing a hydroxyl group, an etheric oxygen atom, an ester group, an alkoxycarbonyl group, a sulfol group, a phosphate ester group, an amino group, a nitro group, or a ketone group is particularly preferred.
- fluorine-containing polymer a fluorine-containing polymer obtained by polymerizing the monomer (1) is preferable.
- R 1 is a fluorine atom
- R 2 is a hydrogen atom
- Q is — CF C (CF) (OH) CH— , — CF C (
- the amount of the fluorine-containing monomer is preferably 1 to: L00 times mass is preferred and 1 to 20 times mass is more preferred 1 to: LO times mass is particularly preferable.
- the photocurable composition contains 1 to 10% by mass of a photopolymerization initiator, preferably 2 to 9% by mass, and particularly preferably 3 to 8% by mass. By setting it within this range, the monomer in the photocurable composition can be easily polymerized to form a cured product, and therefore there is no need to perform an operation such as heating.
- the residue of the photopolymerization initiator is difficult to inhibit the physical properties of the cured product.
- the photopolymerization initiator is a compound that causes radical reaction or ionic reaction by light.
- Examples of the photopolymerization initiator include the following photopolymerization initiators.
- Acetophenone-based photopolymerization initiator Acetophenone, p- (tert-butyl) 1, 1,, 1, trichloroacetophenone, chloroacetophenone, 2 ', 2'-diethoxyacetophenone, hydroxyl Ciacetophenone, 2,2-dimethoxy-2, monophenylacetophenone, 2-aminoacetophenone, dialkylaminoacetophenone, etc.
- Benzoin-based photopolymerization initiators benzyl, benzoin, benzoin methyl ether, benzoin ethyl ether, benzoin isopropyl ether, benzoin isobutyl ether, 1-hydroxycyclohexyl phenyl ketone, 2-hydroxy 2- Methyl-1-phenol 2-methylpropane 1-one, 1- (4-isopropylphenol) 2 hydroxyl 2-methylpropane 1-one, benzyldimethyl ketal, etc.
- Benzophenone-based photopolymerization initiators benzophenone, benzoylbenzoic acid, benzoylmethyl benzoate, methyl-o-benzoylbenzoate, 4-phenol-penzophenone, hydroxybenzophenone, hydroxypropylbenzophenone, acrylic benzophenone, 4 4, bis (dimethylamino) benzophenone, etc.
- Thioxanthone-based photopolymerization initiators Thioxanthone, 2-chlorothioxanthone, 2-methylthioxanthone, jetylthioxanthone, dimethylthioxanthone, and the like.
- Photopolymerization initiators containing fluorine atoms perfluoro (tert-butyl peroxide), perfluorobenzoyl peroxide, and the like.
- photopolymerization initiators a-asiloxime ester, benzyl- (o ethoxyca Rubonyl) -a —monooxime, acyl phosphine oxide, glyoxyester, 3-ketocoumarin, 2-ethyl anthraquinone, camphorquinone, tetramethylthiuramsulfide, azobisisobutyoxy-tolyl, benzoylperoxide, Dialkyl peroxide, tert butyl peroxybivalate, etc.
- the photocurable composition is substantially free of a solvent! / ⁇ . Since the photocurable composition contains a specific main component monomer, a fluorine-containing surfactant, and a fluorine-containing monomer highly compatible with the fluorine-containing polymer, a uniform composition can be formed without containing a solvent. . Since it does not contain a solvent, it can be hardened without using other processes (such as a solvent distillation process). Moreover, the volume shrinkage of the photocurable composition in curing is small. “Substantially free of solvent” means that the solvent is not contained or the solvent used in the preparation of the photocurable composition is removed as much as possible.
- the photocurable composition contains components other than the main component monomer, fluorine-containing monomer, fluorine-containing surfactant, fluorine-containing polymer, and photopolymerization initiator (hereinafter referred to as other components). Also good. Examples of other components include photosensitizers, inorganic materials, carbon materials, conductive polymers, pigment materials such as phthalocyanines, organometallic complexes such as porphyrins, organic magnetic materials, organic semiconductors, and liquid crystal materials.
- other components include photosensitizers, inorganic materials, carbon materials, conductive polymers, pigment materials such as phthalocyanines, organometallic complexes such as porphyrins, organic magnetic materials, organic semiconductors, and liquid crystal materials.
- the photosensitizer include n-butylamine, di-n-butylamine, tri-n-butylphosphine, allylthiourea, s-benzylisothi-um-p-toluenesulfinate, and triethyla.
- the inorganic material include a key compound (a key, a silicon carbide, a silicon dioxide, a silicon nitride, a silicon germanium, an iron silicide, etc.), a metal (platinum, gold, rhodium, , Silver, titanium, lanthanoid elements, copper, iron, zinc, etc.), metal oxides (titanium oxide, alumina, zinc oxide, ITO, iron oxide, copper oxide, bismuth oxide, manganese oxide, acid hof -Um, yttrium oxide, tin oxide, cobalt oxide, cerium oxide, silver oxide, etc.), inorganic compound salts (ferroelectric materials such as barium titanate, piezoelectric materials such as lead zirconate titanate, lithium salts Battery materials, etc.), metal alloys (magnetic materials such as ferrite magnets and neodymium magnets, semiconductors such as bismuth-tellurium alloys, gallium-arsenic alloy
- carbon material examples include fullerene, carbon nanotube, carbon nanohorn, graphite, diamond, activated carbon and the like.
- the fine metal wires are formed only on the ridges, and are hardly formed in the grooves between the ridges. Since the fine metal wires are formed only on the ridges, the refractive index of the light-transmitting substrate is in the groove between the ridges that is not the refractive index of the photo-curing resin in the ridges hidden behind the fine metal wires. Become a rate. For this reason, the maximum wavelength of Rayleigh resonance is shifted to a short wavelength compared with a conventional wire grid polarizer in which a thin metal wire is formed on a flat substrate, and the polarization separation ability on the short wavelength side is improved.
- aluminum particularly preferred is silver, aluminum, chromium, magnesium, or platinum because it has a high reflectivity for visible light, little absorption of visible light, and high conductivity. preferable.
- the cross-sectional shape of the fine metal wire includes a square, rectangle, trapezoid, circle, ellipse, and various other shapes.
- the thin metal wire is very fine in thickness and width, and the performance of the wire grid type polarizer is deteriorated due to slight scratches. In addition, the conductivity of the fine metal wire is lowered by the wrinkles, and the performance of the wire grid type polarizer is lowered. Therefore, to suppress damage and wrinkles of fine metal wires
- the fine metal wire may be covered with a protective layer.
- Examples of the protective layer include resin, metal oxide, and glass.
- resin when aluminum is used as a metal, it is oxidized in the air to form aluminum oxide on the surface.
- the metal oxide film functions as a protective layer for the fine metal wires.
- the refractive index of the protective layer and the refractive index of the light-transmitting substrate are substantially matched.
- the protective layer those having heat resistance and visible light permeability are preferred, and those having a low refractive index are more preferred from the viewpoint of obtaining high polarization separation ability over a wide band.
- the protective layer is present on the outermost surface of the wire grid polarizer, it is preferable that a protective layer having a hardness of pencil hardness H or higher is preferable.
- the protective layer or the light-transmitting substrate may have an antireflection structure on the surface in order to increase the light use efficiency.
- the wire grid polarizer of the present invention described above includes a light-transmitting substrate in which a plurality of protrusions are formed on the surface in parallel with each other at a constant pitch, and on the protrusions of the light-transmitting substrate. Since it has a thin metal wire formed on the surface, it exhibits high polarization separation ability in the visible light region. Moreover, since the light-transmitting substrate is made of a photo-curing resin, it has excellent heat resistance and durability.
- the wire grid polarizer of the present invention is manufactured by a manufacturing method having the following steps ( a ) to (f).
- a photocurable composition 20 is applied onto a support substrate 22.
- the photocurable composition 20 is preferred.
- Examples of the material for the support substrate 22 include inorganic materials such as quartz, glass, and metal; and resin materials such as polydimethylsiloxane and transparent fluorine resin.
- coating methods include potting, spin coating, roll coating, die coating, spray coating, casting, dip coating, screen printing, and transfer.
- the mold 26 in which the plurality of grooves 24 are formed in parallel with each other at a constant pitch is used, and the photocurable composition 20 is arranged so that the grooves 24 are in contact with the photocurable composition 20. Press It ’s good.
- the constant pitch in the present invention means a constant pitch within a certain range. For example, the characteristics may be changed depending on the location by changing the central pitch and the peripheral pitch. .
- FIG. 4 is a perspective view of the mold 26.
- the pitch Pp of the groove 24 is the sum of the width Dp of the groove 24 and the width of the ridge formed between the grooves 24.
- the pitch Pp of the grooves 24 is preferably 300 nm or less, and more preferably 50 to 200 nm force S.
- the wire grid polarizer exhibits a sufficiently high reflectance and a high polarization separation ability even in a short wavelength region of about 400 nm. Moreover, the coloring phenomenon by diffraction is suppressed.
- the width Dp of the groove 24 and it (Dp / Pp) of the pitch Pp are preferably 0.1 to 0.6 force, more preferably 0.4 to 0.55 force.
- the depth Hp of the groove 24 is preferably 50 to 500 nm, more preferably 100 to 300 nm. By setting the depth Hp to 50 nm or more, it becomes easy to selectively form fine metal wires on the ridge to be transferred. By making the depth Hp 500 nm or less, the incident angle dependency of the polarization degree of the wire grid polarizer is reduced.
- the material of the mold 26 is preferably a light-transmitting material such as quartz, glass, polydimethylsiloxane, or transparent fluororesin. If a transparent support substrate is used, an opaque mold such as silicon or nickel may be used.
- the mold By making the shape of the mold into a roll, the mold can be pressed against the photocurable composition while rotating the roll, the photocurable composition can be cured, and the protrusions corresponding to the grooves can be transferred continuously.
- a grid-type polarizer can be used in a large area.
- the press pressure (gauge pressure) when pressing the mold 26 against the photocurable composition 20 is preferably more than 0 and less than lOMPa.
- the photocurable composition 20 is cured in a state where the mold 26 is pressed against the photocurable composition 20, and a plurality of ridges 12 corresponding to the grooves 24 of the mold 26 are formed.
- a light-transmitting substrate 14 is formed. Curing is performed by irradiating the photocurable composition 20 with light from the mold 26 side when the mold is made of a translucent material.
- the photocurable composition 20 may be irradiated with light from the support substrate 22 side. Also use a combination of curing by heating.
- a high pressure mercury lamp or the like is used as a light source for light irradiation.
- the mold 26 is separated from the light transmissive substrate 14. Note that a step (f) of separating the support substrate 22 may be performed before the step (d).
- the fine metal wires 16 are formed on the ridges 12 of the light transmissive substrate. Note that a step (f) of separating the support substrate 22 may be performed before the step (e).
- Examples of the method for forming the fine metal wires 16 include vapor deposition, sputtering, plating, and the like. From the point of selectively forming the fine metal wires 16 on the ridges 12, a film is formed by flying fine particles in an oblique direction under vacuum. An oblique vapor deposition method (including an oblique sputtering method) is preferable. When there is a narrow pitch and the height of the ridge as in the present invention, a metal layer can be selectively formed on the ridge 12 by performing oblique deposition with a sufficiently low angular force. Further, a thin metal layer can be formed by oblique vapor deposition, and then another metal layer can be superimposed thereon by a plating method to form a thin metal wire having a desired thickness.
- the support substrate 22 is separated from the light transmissive substrate 14 to obtain the wire grid polarizer 10.
- a light grid substrate and the support substrate 22 integrated without separating the support substrate 22 may be used as the wire grid polarizer.
- the method for producing a wire grid polarizer of the present invention described above is a method having the steps (a) to (f), that is, an optical imprint method, and therefore, compared with a conventional lithography method.
- Wire grid polarizers with fewer manufacturing processes can be manufactured with high productivity and a large area.
- the photoimprint method uses a photocurable composition, the substrate is heated. Unlike the conventional thermal imprinting method using plastic resin, it is possible to produce a via grid type polarizer excellent in heat resistance and durability.
- Polarization degree ((Tp- Ts) Z ( Tp + Ts)) ° ⁇ 5
- Tp is the transmittance of ⁇ -polarized light and Ts is the transmittance of S-polarized light.
- composition 1 In a vial container (internal volume of 6 mL), 0.30 g of monomer (3-1), 0.40 g of monomer (3-2), 0.25 g of monomer (2-1), and fluorine-containing surfactant (Asahi Glass) Co-oligomer (fluorine content of about 3) 0% by weight, weight average molecular weight about 3000. ;)) Of 0. Olg, and then 0.04 g of photopolymerization initiator (Irgacure 907, manufactured by Ciba Specialty Chemicals Co., Ltd.) was added and mixed, and the photocurable composition having a viscosity of 12 mPa ⁇ s. (Hereinafter referred to as Composition 1) was prepared.
- the cured product of composition 1 has a refractive index (nd) of 1.48, a visible light transmittance of 200 m thick, 94.2%, a water contact angle of 95 °, and a Vicat softening point.
- the temperature was 154 ° C.
- the yarn composition 1 was applied by spin coating to form a coating film of the composition 1 having a thickness of 1 m.
- the film was pressed against the coating film of Composition 1 at 0.5 MPa (gauge pressure) at 25 ° C.
- PET polyethylene terephthalate
- Example 2 The same transparent mold as in Example 2 was heated to 150 ° C, and then the groove strength was in contact with the SPET film.
- the degree of polarization was calculated based on the following formula.
- Polarization degree ((Tp- Ts) Z ( Tp + Ts)) ° ⁇ 5
- Tp is the transmittance of ⁇ -polarized light and Ts is the transmittance of S-polarized light.
- a wire grid polarizer was placed in an atmosphere at 200 ° C for 1000 hours to form a heat resistance test sample.
- the transmittance was measured, and the degree of polarization was calculated.
- the transmittance change before and after the heat resistance test was evaluated as less than 1% as ⁇ , 1% to less than 5% as ⁇ , and 5% or more as X.
- the change in the degree of polarization before and after the heat resistance test was evaluated as less than 1% as ⁇ , 1% or more but less than 5% as ⁇ , and 5% or more as X. The results are shown in Table 1.
- the thermal imprint method of Example 3 can greatly simplify the process compared to the conventional lithography method, but the tact time is longer than that of the optical imprint method of Example 2, and the temperature and pressure are high. Since the conditions are necessary, the equipment becomes heavy and it cannot be said that productivity is excellent.
- the PET used in Example 3 had poor release properties, and it was necessary to apply a release agent to the transparent mold.
- the photocured resin of Example 2 showed good releasability without a release agent with low surface free energy.
- Example 2 and Example 3 showed good results. However, in the evaluation after the heat resistance test, in Example 3, the concavo-convex pattern was disturbed, and the polarization separation ability decreased. In addition, a significant decrease in transmittance was observed due to yellowing (coloring) of PET. On the other hand, Example 2 No deterioration in performance was observed and good heat resistance was exhibited.
- the wire grid polarizer of the present invention exhibits high polarization separation in the visible light region and is heat resistant.
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Abstract
Description
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EP07741209A EP2023169A4 (en) | 2006-04-07 | 2007-04-06 | WIRE GRID POLARIZER AND METHOD FOR PRODUCING THE SAME |
JP2008509888A JP5182644B2 (ja) | 2006-04-07 | 2007-04-06 | ワイヤグリッド型偏光子およびその製造方法 |
US12/246,524 US20090052030A1 (en) | 2006-04-07 | 2008-10-07 | Wire-grid polarizer and process for producing the same |
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Cited By (16)
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JP2016045466A (ja) * | 2014-08-26 | 2016-04-04 | 大日本印刷株式会社 | 調光装置および調光装置の設置方法 |
US9897735B2 (en) | 2014-10-17 | 2018-02-20 | Boe Technology Group Co., Ltd. | Wire grid polarizer and fabrication method thereof, and display device |
US20160327713A1 (en) * | 2014-12-30 | 2016-11-10 | Boe Technology Group Co., Ltd. | Wire grid polarizer and manufacturing method thereof, and display device |
US9952367B2 (en) | 2014-12-30 | 2018-04-24 | Boe Technology Group Co., Ltd. | Wire grid polarizer and manufacturing method thereof, and display device |
US10042099B2 (en) | 2014-12-30 | 2018-08-07 | Boe Technology Group Co., Ltd. | Wire grid polarizer and manufacturing method thereof, and display device |
Also Published As
Publication number | Publication date |
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US20090052030A1 (en) | 2009-02-26 |
CN101416083A (zh) | 2009-04-22 |
EP2023169A1 (en) | 2009-02-11 |
JP5182644B2 (ja) | 2013-04-17 |
JPWO2007116972A1 (ja) | 2009-08-20 |
KR20090006066A (ko) | 2009-01-14 |
EP2023169A4 (en) | 2011-03-16 |
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