TWI820331B - 薄型圓偏光板之製造方法 - Google Patents
薄型圓偏光板之製造方法 Download PDFInfo
- Publication number
- TWI820331B TWI820331B TW109114786A TW109114786A TWI820331B TW I820331 B TWI820331 B TW I820331B TW 109114786 A TW109114786 A TW 109114786A TW 109114786 A TW109114786 A TW 109114786A TW I820331 B TWI820331 B TW I820331B
- Authority
- TW
- Taiwan
- Prior art keywords
- liquid crystal
- crystal alignment
- solidified layer
- polarizing plate
- alignment solidified
- Prior art date
Links
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 35
- 239000004973 liquid crystal related substance Substances 0.000 claims abstract description 177
- 239000010410 layer Substances 0.000 claims abstract description 148
- 239000000463 material Substances 0.000 claims abstract description 42
- 230000001681 protective effect Effects 0.000 claims abstract description 42
- 239000000853 adhesive Substances 0.000 claims abstract description 35
- 230000001070 adhesive effect Effects 0.000 claims abstract description 34
- 239000012790 adhesive layer Substances 0.000 claims abstract description 27
- 238000000034 method Methods 0.000 claims abstract description 14
- 125000006850 spacer group Chemical group 0.000 claims abstract description 10
- 239000000758 substrate Substances 0.000 claims abstract description 8
- 229920005989 resin Polymers 0.000 claims description 58
- 239000011347 resin Substances 0.000 claims description 58
- -1 polyethylene terephthalate Polymers 0.000 claims description 9
- 229920000139 polyethylene terephthalate Polymers 0.000 claims description 6
- 239000005020 polyethylene terephthalate Substances 0.000 claims description 6
- 229920013716 polyethylene resin Polymers 0.000 claims description 3
- 238000004804 winding Methods 0.000 abstract description 9
- 230000007547 defect Effects 0.000 abstract description 6
- 150000001875 compounds Chemical class 0.000 description 37
- 238000011282 treatment Methods 0.000 description 32
- 239000004372 Polyvinyl alcohol Substances 0.000 description 26
- 229920002451 polyvinyl alcohol Polymers 0.000 description 26
- 230000003287 optical effect Effects 0.000 description 20
- 239000000178 monomer Substances 0.000 description 19
- 239000011241 protective layer Substances 0.000 description 17
- 239000007788 liquid Substances 0.000 description 13
- NLKNQRATVPKPDG-UHFFFAOYSA-M potassium iodide Chemical compound [K+].[I-] NLKNQRATVPKPDG-UHFFFAOYSA-M 0.000 description 12
- 229920002284 Cellulose triacetate Polymers 0.000 description 11
- NNLVGZFZQQXQNW-ADJNRHBOSA-N [(2r,3r,4s,5r,6s)-4,5-diacetyloxy-3-[(2s,3r,4s,5r,6r)-3,4,5-triacetyloxy-6-(acetyloxymethyl)oxan-2-yl]oxy-6-[(2r,3r,4s,5r,6s)-4,5,6-triacetyloxy-2-(acetyloxymethyl)oxan-3-yl]oxyoxan-2-yl]methyl acetate Chemical compound O([C@@H]1O[C@@H]([C@H]([C@H](OC(C)=O)[C@H]1OC(C)=O)O[C@H]1[C@@H]([C@@H](OC(C)=O)[C@H](OC(C)=O)[C@@H](COC(C)=O)O1)OC(C)=O)COC(=O)C)[C@@H]1[C@@H](COC(C)=O)O[C@@H](OC(C)=O)[C@H](OC(C)=O)[C@H]1OC(C)=O NNLVGZFZQQXQNW-ADJNRHBOSA-N 0.000 description 11
- 239000007864 aqueous solution Substances 0.000 description 10
- 238000004043 dyeing Methods 0.000 description 10
- 238000011156 evaluation Methods 0.000 description 10
- 229920000178 Acrylic resin Polymers 0.000 description 9
- 239000004925 Acrylic resin Substances 0.000 description 9
- KGBXLFKZBHKPEV-UHFFFAOYSA-N boric acid Chemical compound OB(O)O KGBXLFKZBHKPEV-UHFFFAOYSA-N 0.000 description 8
- 239000004327 boric acid Substances 0.000 description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 8
- 238000010521 absorption reaction Methods 0.000 description 7
- 239000002356 single layer Substances 0.000 description 7
- 239000011248 coating agent Substances 0.000 description 6
- 238000000576 coating method Methods 0.000 description 6
- 238000004132 cross linking Methods 0.000 description 6
- 239000006185 dispersion Substances 0.000 description 6
- 239000000203 mixture Substances 0.000 description 6
- 238000012545 processing Methods 0.000 description 6
- 239000000126 substance Substances 0.000 description 6
- 239000004988 Nematic liquid crystal Substances 0.000 description 4
- 230000000052 comparative effect Effects 0.000 description 4
- 238000001035 drying Methods 0.000 description 4
- 238000002156 mixing Methods 0.000 description 4
- 238000006116 polymerization reaction Methods 0.000 description 4
- 238000011160 research Methods 0.000 description 4
- ZCYVEMRRCGMTRW-UHFFFAOYSA-N 7553-56-2 Chemical compound [I] ZCYVEMRRCGMTRW-UHFFFAOYSA-N 0.000 description 3
- UHOVQNZJYSORNB-UHFFFAOYSA-N Benzene Chemical compound C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 description 3
- DKNPRRRKHAEUMW-UHFFFAOYSA-N Iodine aqueous Chemical compound [K+].I[I-]I DKNPRRRKHAEUMW-UHFFFAOYSA-N 0.000 description 3
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 239000011630 iodine Substances 0.000 description 3
- 229910052740 iodine Inorganic materials 0.000 description 3
- 238000002955 isolation Methods 0.000 description 3
- KNCYXPMJDCCGSJ-UHFFFAOYSA-N piperidine-2,6-dione Chemical group O=C1CCCC(=O)N1 KNCYXPMJDCCGSJ-UHFFFAOYSA-N 0.000 description 3
- 238000005406 washing Methods 0.000 description 3
- UEXCJVNBTNXOEH-UHFFFAOYSA-N Ethynylbenzene Chemical group C#CC1=CC=CC=C1 UEXCJVNBTNXOEH-UHFFFAOYSA-N 0.000 description 2
- 229920000106 Liquid crystal polymer Polymers 0.000 description 2
- 239000004977 Liquid-crystal polymers (LCPs) Substances 0.000 description 2
- PPBRXRYQALVLMV-UHFFFAOYSA-N Styrene Chemical compound C=CC1=CC=CC=C1 PPBRXRYQALVLMV-UHFFFAOYSA-N 0.000 description 2
- 206010042674 Swelling Diseases 0.000 description 2
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 2
- 239000003522 acrylic cement Substances 0.000 description 2
- 229920006026 co-polymeric resin Polymers 0.000 description 2
- 150000001925 cycloalkenes Chemical class 0.000 description 2
- 150000002148 esters Chemical class 0.000 description 2
- QQVIHTHCMHWDBS-UHFFFAOYSA-N isophthalic acid Chemical compound OC(=O)C1=CC=CC(C(O)=O)=C1 QQVIHTHCMHWDBS-UHFFFAOYSA-N 0.000 description 2
- 230000005012 migration Effects 0.000 description 2
- 238000013508 migration Methods 0.000 description 2
- 229920006122 polyamide resin Polymers 0.000 description 2
- 229920005668 polycarbonate resin Polymers 0.000 description 2
- 239000004431 polycarbonate resin Substances 0.000 description 2
- 229920005672 polyolefin resin Polymers 0.000 description 2
- 238000005096 rolling process Methods 0.000 description 2
- 230000008961 swelling Effects 0.000 description 2
- 238000011179 visual inspection Methods 0.000 description 2
- LWRBVKNFOYUCNP-UHFFFAOYSA-N 2-methyl-1-(4-methylsulfanylphenyl)-2-morpholin-4-ylpropan-1-one Chemical compound C1=CC(SC)=CC=C1C(=O)C(C)(C)N1CCOCC1 LWRBVKNFOYUCNP-UHFFFAOYSA-N 0.000 description 1
- 239000004593 Epoxy Chemical class 0.000 description 1
- 239000004743 Polypropylene Substances 0.000 description 1
- 239000006087 Silane Coupling Agent Substances 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 125000003545 alkoxy group Chemical group 0.000 description 1
- 125000000217 alkyl group Chemical group 0.000 description 1
- 230000000181 anti-adherent effect Effects 0.000 description 1
- 230000003667 anti-reflective effect Effects 0.000 description 1
- 150000001541 aziridines Chemical class 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 150000001555 benzenes Chemical class 0.000 description 1
- 125000000051 benzyloxy group Chemical group [H]C1=C([H])C([H])=C(C([H])=C1[H])C([H])([H])O* 0.000 description 1
- 125000006267 biphenyl group Chemical group 0.000 description 1
- VTJUKNSKBAOEHE-UHFFFAOYSA-N calixarene Chemical compound COC(=O)COC1=C(CC=2C(=C(CC=3C(=C(C4)C=C(C=3)C(C)(C)C)OCC(=O)OC)C=C(C=2)C(C)(C)C)OCC(=O)OC)C=C(C(C)(C)C)C=C1CC1=C(OCC(=O)OC)C4=CC(C(C)(C)C)=C1 VTJUKNSKBAOEHE-UHFFFAOYSA-N 0.000 description 1
- 239000012461 cellulose resin Substances 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000003851 corona treatment Methods 0.000 description 1
- 239000003431 cross linking reagent Substances 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 125000000113 cyclohexyl group Chemical class [H]C1([H])C([H])([H])C([H])([H])C([H])(*)C([H])([H])C1([H])[H] 0.000 description 1
- 229920005994 diacetyl cellulose Polymers 0.000 description 1
- 239000000975 dye Substances 0.000 description 1
- 230000005684 electric field Effects 0.000 description 1
- 238000005401 electroluminescence Methods 0.000 description 1
- 239000005038 ethylene vinyl acetate Substances 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 230000001747 exhibiting effect Effects 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 238000009472 formulation Methods 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000007654 immersion Methods 0.000 description 1
- 239000003999 initiator Substances 0.000 description 1
- 239000012948 isocyanate Substances 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 238000003475 lamination Methods 0.000 description 1
- 230000002535 lyotropic effect Effects 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000000691 measurement method Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 229910001507 metal halide Inorganic materials 0.000 description 1
- 150000005309 metal halides Chemical class 0.000 description 1
- 239000000113 methacrylic resin Substances 0.000 description 1
- JRZJOMJEPLMPRA-UHFFFAOYSA-N olefin Natural products CCCCCCCC=C JRZJOMJEPLMPRA-UHFFFAOYSA-N 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- IEQIEDJGQAUEQZ-UHFFFAOYSA-N phthalocyanine Chemical class N1C(N=C2C3=CC=CC=C3C(N=C3C4=CC=CC=C4C(=N4)N3)=N2)=C(C=CC=C2)C2=C1N=C1C2=CC=CC=C2C4=N1 IEQIEDJGQAUEQZ-UHFFFAOYSA-N 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 230000010287 polarization Effects 0.000 description 1
- 229920001200 poly(ethylene-vinyl acetate) Polymers 0.000 description 1
- 150000004291 polyenes Chemical class 0.000 description 1
- 229920005678 polyethylene based resin Polymers 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 230000000379 polymerizing effect Effects 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
- 239000004800 polyvinyl chloride Substances 0.000 description 1
- 229920000915 polyvinyl chloride Polymers 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 238000007127 saponification reaction Methods 0.000 description 1
- 229920002050 silicone resin Polymers 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000004381 surface treatment Methods 0.000 description 1
- 239000002335 surface treatment layer Substances 0.000 description 1
- 229920005992 thermoplastic resin Polymers 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
- 238000002834 transmittance Methods 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
- G02B5/3083—Birefringent or phase retarding elements
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
- B32B37/14—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the properties of the layers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
- B32B7/02—Physical, chemical or physicochemical properties
- B32B7/023—Optical properties
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
- B32B7/04—Interconnection of layers
- B32B7/12—Interconnection of layers using interposed adhesives or interposed materials with bonding properties
-
- 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
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
-
- 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
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/13363—Birefringent elements, e.g. for optical compensation
Landscapes
- Physics & Mathematics (AREA)
- Nonlinear Science (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Mathematical Physics (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Polarising Elements (AREA)
- Liquid Crystal (AREA)
- Laminated Bodies (AREA)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2019-134759 | 2019-07-22 | ||
| JP2019134759A JP7257907B2 (ja) | 2019-07-22 | 2019-07-22 | 薄型円偏光板の製造方法 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| TW202106518A TW202106518A (zh) | 2021-02-16 |
| TWI820331B true TWI820331B (zh) | 2023-11-01 |
Family
ID=74194070
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| TW109114786A TWI820331B (zh) | 2019-07-22 | 2020-05-04 | 薄型圓偏光板之製造方法 |
Country Status (5)
| Country | Link |
|---|---|
| JP (1) | JP7257907B2 (fr) |
| KR (1) | KR20220035386A (fr) |
| CN (1) | CN114144707B (fr) |
| TW (1) | TWI820331B (fr) |
| WO (1) | WO2021014685A1 (fr) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP7286693B2 (ja) * | 2021-03-04 | 2023-06-05 | 住友化学株式会社 | 偏光板の欠陥検査方法 |
| JP2023081092A (ja) | 2021-11-30 | 2023-06-09 | 住友化学株式会社 | 粘着剤層付き円偏光板 |
| JP2023162732A (ja) * | 2022-04-27 | 2023-11-09 | 日東電工株式会社 | 位相差層付偏光板および画像表示装置 |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TW201927564A (zh) * | 2017-12-04 | 2019-07-16 | 日商住友化學股份有限公司 | 光學積層體及該光學積層體之製造方法 |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100602815B1 (ko) | 1998-10-30 | 2006-07-19 | 데이진 가부시키가이샤 | 위상차필름 및 그것을 이용한 광학장치 |
| JP4553258B2 (ja) * | 2005-02-25 | 2010-09-29 | 日東電工株式会社 | 楕円偏光板の製造方法および楕円偏光板を用いた画像表示装置 |
| JP4976051B2 (ja) * | 2006-05-11 | 2012-07-18 | 日東電工株式会社 | 偏光板用表面保護フィルム、該表面保護フィルムで保護された偏光板および画像表示装置 |
| JP2008009403A (ja) * | 2006-05-30 | 2008-01-17 | Nippon Oil Corp | 楕円偏光板、楕円偏光板の製造方法および液晶表示装置 |
| JP6120779B2 (ja) * | 2012-02-01 | 2017-04-26 | 住友化学株式会社 | 偏光性積層フィルムの製造方法及び偏光板の製造方法 |
| JP6172980B2 (ja) * | 2012-03-14 | 2017-08-02 | 日東電工株式会社 | 液晶表示パネルの製造方法 |
| TW201504065A (zh) * | 2013-05-21 | 2015-02-01 | Fujifilm Corp | 偏光板及其製造方法以及轉印材料 |
| JPWO2015152157A1 (ja) * | 2014-03-31 | 2017-04-13 | 富士フイルム株式会社 | 偏光板、画像表示装置および液晶表示装置 |
| JP6925808B2 (ja) * | 2017-01-26 | 2021-08-25 | 日東電工株式会社 | 光学積層体の製造方法および画像表示装置の製造方法 |
-
2019
- 2019-07-22 JP JP2019134759A patent/JP7257907B2/ja active Active
-
2020
- 2020-03-19 KR KR1020227001628A patent/KR20220035386A/ko unknown
- 2020-03-19 WO PCT/JP2020/012191 patent/WO2021014685A1/fr active Application Filing
- 2020-03-19 CN CN202080052466.XA patent/CN114144707B/zh active Active
- 2020-05-04 TW TW109114786A patent/TWI820331B/zh active
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TW201927564A (zh) * | 2017-12-04 | 2019-07-16 | 日商住友化學股份有限公司 | 光學積層體及該光學積層體之製造方法 |
Also Published As
| Publication number | Publication date |
|---|---|
| JP7257907B2 (ja) | 2023-04-14 |
| CN114144707B (zh) | 2024-06-28 |
| TW202106518A (zh) | 2021-02-16 |
| KR20220035386A (ko) | 2022-03-22 |
| CN114144707A (zh) | 2022-03-04 |
| JP2021018354A (ja) | 2021-02-15 |
| WO2021014685A1 (fr) | 2021-01-28 |
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