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1. WO2022075145 - POLARIZING PLATE AND IMAGE DISPLAY DEVICE

Publication Number WO/2022/075145
Publication Date 14.04.2022
International Application No. PCT/JP2021/035862
International Filing Date 29.09.2021
IPC
G02B 5/30 2006.1
GPHYSICS
02OPTICS
BOPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
5Optical elements other than lenses
30Polarising elements
B32B 27/32 2006.1
BPERFORMING OPERATIONS; TRANSPORTING
32LAYERED PRODUCTS
BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
27Layered products essentially comprising synthetic resin
32comprising polyolefins
C09J 7/30 2018.1
CCHEMISTRY; METALLURGY
09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
JADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
7Adhesives in the form of films or foils
30characterised by the adhesive composition
C09J 11/06 2006.1
CCHEMISTRY; METALLURGY
09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
JADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
11Features of adhesives not provided for in group C09J9/76
02Non-macromolecular additives
06organic
C09J 129/04 2006.1
CCHEMISTRY; METALLURGY
09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
JADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
129Adhesives based on homopolymers or 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 an alcohol, ether, aldehydo, ketonic, acetal, or ketal radical; Adhesives based on hydrolysed polymers of esters of unsaturated alcohols with saturated carboxylic acids; Adhesives based on derivatives of such polymers
02Homopolymers or copolymers of unsaturated alcohols
04Polyvinyl alcohol; Partially hydrolysed homopolymers or copolymers of esters of unsaturated alcohols with saturated carboxylic acids
C09J 201/00 2006.1
CCHEMISTRY; METALLURGY
09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
JADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
201Adhesives based on unspecified macromolecular compounds
CPC
B32B 27/32
BPERFORMING OPERATIONS; TRANSPORTING
32LAYERED PRODUCTS
BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
27Layered products comprising ; a layer of; synthetic resin
32comprising polyolefins
C09J 11/06
CCHEMISTRY; METALLURGY
09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
JADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIAL AS ADHESIVES
11Features of adhesives not provided for in group C09J9/00, e.g. additives
02Non-macromolecular additives
06organic
C09J 129/04
CCHEMISTRY; METALLURGY
09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
JADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIAL AS ADHESIVES
129Adhesives based on homopolymers or 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 an alcohol, ether, aldehydo, ketonic, acetal, or ketal radical; Adhesives based on hydrolysed polymers of esters of unsaturated alcohols with saturated carboxylic acids; Adhesives based on derivatives of such polymers
02Homopolymers or copolymers of unsaturated alcohols
04Polyvinyl alcohol; Partially hydrolysed homopolymers or copolymers of esters of unsaturated alcohols with saturated carboxylic acids
C09J 201/00
CCHEMISTRY; METALLURGY
09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
JADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIAL AS ADHESIVES
201Adhesives based on unspecified macromolecular compounds
C09J 7/30
CCHEMISTRY; METALLURGY
09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
JADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIAL AS ADHESIVES
7Adhesives in the form of films or foils
30characterised by the adhesive composition
G02B 5/30
GPHYSICS
02OPTICS
BOPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
5Optical elements other than lenses
30Polarising elements
Applicants
  • 住友化学株式会社 SUMITOMO CHEMICAL COMPANY, LIMITED [JP]/[JP]
Inventors
  • 福田 謙一 FUKUDA, Kenichi
  • 内藤 亮 NAITOU, Ryo
Agents
  • 中山 亨 NAKAYAMA, Tohru
  • 坂元 徹 SAKAMOTO, Toru
Priority Data
2020-16842705.10.2020JP
Publication Language Japanese (ja)
Filing Language Japanese (JA)
Designated States
Title
(EN) POLARIZING PLATE AND IMAGE DISPLAY DEVICE
(FR) PLAQUE DE POLARISATION, ET DISPOSITIF D'AFFICHAGE D'IMAGE
(JA) 偏光板及び画像表示装置
Abstract
(EN) The present invention provides a polarizing plate with which decreases in transmittance in high temperature environments can be suppressed. A polarizing plate comprising a polarizing element that is obtained by having a dichroic pigment adsorbed and aligned on a polyvinyl alcohol resin layer, and a transparent protective film that is laminated on at least one surface of the polarizing element, wherein: the polarizing element and the transparent protective film are adhered to each other by an adhesive agent layer formed from an adhesive agent containing a urea compound and a reducing agent; the urea compound is at least one substance selected from the group consisting of urea, urea derivatives, thiourea and thiourea derivatives; and the content ratio of the polarizing element is no less than the equilibrium moisture content at a temperature of 20°C and a relative humidity of 30%, and no more than the equilibrium moisture content at a temperature of 20°C and a relative humidity of 50%.
(FR) L'invention fournit une plaque de polarisation dans laquelle une baisse de transmittance sous un environnement à haute température, est inhibée. Plus précisément, l'invention concerne une plaque de polarisation qui possède : un élément polarisant dans lequel des pigments dichroïques sont adsorbés et orientés sur une couche de résine à base d'alcool polyvinylique; et un film protecteur transparent stratifié sur au moins une face dudit élément polarisant. Ledit élément polarisant et ledit film protecteur transparent sont collés au moyen d'une couche d'adhésif formée à partir d'un adhésif comprenant un composé à base d'urée et un agent réducteur. Ledit composé à base d'urée consiste en au moins un élément choisi dans un groupe constitué d'une urée, d'un dérivé d'urée, d'une thio-urée et d'un dérivé de thio-urée. La teneur en eau dudit élément polarisant est supérieure ou égale à la teneur normale en eau à une température de 20°C et à une humidité relative de 30%, et inférieure ou égale à la teneur normale en eau à une température de 20°C et à une humidité relative de 50%.
(JA) 本発明は、高温環境下における透過率の低下が抑制された偏光板を提供する。ポリビニルアルコール系樹脂層に二色性色素を吸着配向させた偏光素子と、前記偏光素子の少なくとも一方の面に積層された透明保護フィルムと、を有する偏光板であって、前記偏光素子と前記透明保護フィルムとは、尿素系化合物及び還元剤を含有する接着剤から形成される接着剤層によって貼合されており、前記尿素系化合物は、尿素、尿素誘導体、チオ尿素及びチオ尿素誘導体からなる群より選択される少なくとも1種であり、前記偏光素子の含水率は、温度20℃相対湿度30%の平衡含水率以上、かつ温度20℃相対湿度50%の平衡含水率以下である、偏光板。
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