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1. WO2022004284 - POLARIZING PLATE EQUIPPED WITH RETARDATION LAYER AND ADHESIVE LAYER, AND IMAGE DISPLAY DEVICE USING POLARIZING PLATE EQUIPPED WITH RETARDATION LAYER AND ADHESIVE LAYER

Publication Number WO/2022/004284
Publication Date 06.01.2022
International Application No. PCT/JP2021/021557
International Filing Date 07.06.2021
IPC
G02B 5/30 2006.1
GPHYSICS
02OPTICS
BOPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
5Optical elements other than lenses
30Polarising elements
H01L 27/32 2006.1
HELECTRICITY
01BASIC ELECTRIC ELEMENTS
LSEMICONDUCTOR DEVICES; ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR
27Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate
28including components using organic materials as the active part, or using a combination of organic materials with other materials as the active part
32with components specially adapted for light emission, e.g. flat-panel displays using organic light-emitting diodes
G02F 1/1335 2006.1
GPHYSICS
02OPTICS
FDEVICES OR ARRANGEMENTS, THE OPTICAL OPERATION OF WHICH IS MODIFIED BY CHANGING THE OPTICAL PROPERTIES OF THE MEDIUM OF THE DEVICES OR ARRANGEMENTS FOR THE CONTROL OF THE INTENSITY, COLOUR, PHASE, POLARISATION OR DIRECTION OF LIGHT, e.g. SWITCHING, GATING, MODULATING OR DEMODULATING; TECHNIQUES OR PROCEDURES FOR THE OPERATION THEREOF; FREQUENCY-CHANGING; NON-LINEAR OPTICS; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
1Devices 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
01for the control of the intensity, phase, polarisation or colour
13based on liquid crystals, e.g. single liquid crystal display cells
133Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
1333Constructional arrangements
1335Structural association of cells with optical devices, e.g. polarisers or reflectors
G02F 1/13363 2006.1
GPHYSICS
02OPTICS
FDEVICES OR ARRANGEMENTS, THE OPTICAL OPERATION OF WHICH IS MODIFIED BY CHANGING THE OPTICAL PROPERTIES OF THE MEDIUM OF THE DEVICES OR ARRANGEMENTS FOR THE CONTROL OF THE INTENSITY, COLOUR, PHASE, POLARISATION OR DIRECTION OF LIGHT, e.g. SWITCHING, GATING, MODULATING OR DEMODULATING; TECHNIQUES OR PROCEDURES FOR THE OPERATION THEREOF; FREQUENCY-CHANGING; NON-LINEAR OPTICS; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
1Devices 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
01for the control of the intensity, phase, polarisation or colour
13based on liquid crystals, e.g. single liquid crystal display cells
133Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
1333Constructional arrangements
1335Structural association of cells with optical devices, e.g. polarisers or reflectors
13363Birefringent elements, e.g. for optical compensation
H05B 33/02 2006.1
HELECTRICITY
05ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
BELECTRIC HEATING; ELECTRIC LIGHTING NOT OTHERWISE PROVIDED FOR
33Electroluminescent light sources
02Details
H01L 51/50 2006.1
HELECTRICITY
01BASIC ELECTRIC ELEMENTS
LSEMICONDUCTOR DEVICES; ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR
51Solid state devices using organic materials as the active part, or using a combination of organic materials with other materials as the active part; Processes or apparatus specially adapted for the manufacture or treatment of such devices, or of parts thereof
50specially adapted for light emission, e.g. organic light emitting diodes (OLED) or polymer light emitting devices (PLED)
Applicants
  • 日東電工株式会社 NITTO DENKO CORPORATION [JP]/[JP]
Inventors
  • 山本 悟士 YAMAMOTO Satoshi
  • 木村 智之 KIMURA Tomoyuki
  • 藤田 昌邦 FUJITA Masakuni
  • 外山 雄祐 TOYAMA Yuusuke
Agents
  • 籾井 孝文 MOMII Takafumi
Priority Data
2020-11391601.07.2020JP
2021-08584921.05.2021JP
Publication Language Japanese (ja)
Filing Language Japanese (JA)
Designated States
Title
(EN) POLARIZING PLATE EQUIPPED WITH RETARDATION LAYER AND ADHESIVE LAYER, AND IMAGE DISPLAY DEVICE USING POLARIZING PLATE EQUIPPED WITH RETARDATION LAYER AND ADHESIVE LAYER
(FR) LAME POLARISANTE ÉQUIPÉE D'UNE COUCHE DE RETARD ET D'UNE COUCHE ADHÉSIVE ET DISPOSITIF D'AFFICHAGE D'IMAGE UTILISANT UNE LAME POLARISANTE ÉQUIPÉE D'UNE COUCHE DE RETARD ET D'UNE COUCHE ADHÉSIVE
(JA) 位相差層および粘着剤層付偏光板、ならびに、該位相差層および粘着剤層付偏光板を用いた画像表示装置
Abstract
(EN) Provided is a polarizing plate that is equipped with a retardation layer and an adhesive layer and by which an image display device can be realized in which phase difference unevenness is suppressed in high temperature environments, and color unevenness and light leakage is suppressed in high temperature environments. The polarizing plate equipped with a retardation layer and an adhesive layer according to an embodiment of the present invention comprises: a polarizing plate including a polarizer; a retardation layer attached to the polarizing plate via a first adhesive layer; and a second adhesive layer provided as an outermost layer, on the retardation layer, on the side opposite the polarizing plate. The retardation layer is constituted of a stretched film of a resin film and satisfies the relationship Re (450) < Re (550). A paste shifting amount of the first adhesive layer after a heating test at 85℃ for 500 hours is 900 μm or less, and a creep value of the second adhesive layer at 85℃ is 40 μm or less.
(FR) L'invention concerne une lame polarisante qui est équipée d'une couche de retard et d'une couche adhésive et avec laquelle un dispositif d'affichage d'image peut être obtenu, dans lequel une irrégularité de différence de phase est supprimée dans des environnements à haute température et une irrégularité de couleur et une perte de lumière sont supprimées dans des environnements à haute température. La lame polarisante équipée d'une couche de retard et d'une couche adhésive de la présente invention comprend : une lame polarisante comprenant un polariseur ; une couche de retard fixée à la lame polarisante par l'intermédiaire d'une première couche adhésive ; et une seconde couche adhésive disposée en tant que couche la plus à l'extérieur sur la couche de retard sur le côté opposé à la lame polarisante. La couche de retard est constituée d'un film étiré d'un film de résine et satisfait la relation Re (450) < Re (550). Une quantité de déplacement de pâte de la première couche adhésive après un essai de chauffage à 85°C pendant 500 heures est de 900 µm ou moins et une valeur de fluage de la seconde couche adhésive à 85°C est de 40 µm ou moins.
(JA) 高温環境下において位相差ムラが抑制され、高温環境下において色ムラおよび光漏れが抑制された画像表示装置を実現し得る位相差層および粘着剤層付偏光板が提供される。本発明の実施形態による位相差層および粘着剤層付偏光板は、偏光子を含む偏光板と、偏光板に第1の粘着剤層を介して貼り合わせられた位相差層と、位相差層の偏光板と反対側に最外層として設けられた第2の粘着剤層と、を有する。位相差層は、樹脂フィルムの延伸フィルムで構成され、Re(450)<Re(550)の関係を満足する。第1の粘着剤層の85℃および500時間の加熱試験後の糊ずれ量は900μm以下であり、第2の粘着剤層の85℃におけるクリープ値は40μm以下である。
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