CONTRAST RATIO IMPROVING OPTICAL FILM, POLARIZING PLATE COMPRISING SAME, AND LIQUID CRYSTAL DISPLAY DEVICE COMPRISING SAME

Provided are a contrast ratio improving optical film, a polarizing plate comprising the same, and a liquid crystal display device comprising the same, wherein the contrast ratio improving optical film comprises a contrast ratio improving layer. The contrast ratio improving layer comprises a first re...

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Bibliographic Details
Main Authors OH, Young, WEE, Dong Ho, LEE, Jeong Ho, JUNG, Yong Un, JU, Young Hyun, CHO, Jang Hyun, SHIM, Dae Seob
Format Patent
LanguageEnglish
French
Korean
Published 30.08.2018
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Summary:Provided are a contrast ratio improving optical film, a polarizing plate comprising the same, and a liquid crystal display device comprising the same, wherein the contrast ratio improving optical film comprises a contrast ratio improving layer. The contrast ratio improving layer comprises a first resin layer and a second resin layer which faces the first resin layer, wherein the second resin layer comprises a pattern part having optical patterns and a flat part between the optical patterns. The optical patterns have at least one inclined surface with respect to the flat part, and the flat part or the inclined surface has a light absorption layer formed thereon. The contrast ratio improving optical film has a lowest reflectance of 0.5% or less. L'invention concerne un film optique améliorant le rapport de contraste, une plaque de polarisation le comprenant, et un dispositif d'affichage à cristaux liquides le comprenant, le film optique améliorant le rapport de contraste comprenant une couche améliorant le rapport de contraste. La couche améliorant le rapport de contraste comprend une première couche de résine et une seconde couche de résine qui fait face à la première couche de résine, la seconde couche de résine comprenant une partie de motif ayant des motifs optiques et une partie plate entre les motifs optiques. Les motifs optiques ont au moins une surface inclinée par rapport à la partie plate, et la partie plate ou la surface inclinée a une couche d'absorption de lumière formée sur celle-ci. Le film optique améliorant le rapport de contraste a un facteur de réflexion le plus bas de 0,5 % ou moins. 명암비 개선층을 포함하는 명암비 개선 광학필름이고, 상기 명암비 개선층은 제1수지층 및 상기 제1수지층과 대향하는 제2수지층을 포함하고, 상기 제2수지층은 광학 패턴 및 상기 광학 패턴 사이에 평탄부를 갖는 패턴부를 구비하고, 상기 광학 패턴은 상기 평탄부에 대한 하나 이상의 경사면을 구비하고, 상기 평탄부 또는 상기 경사면에는 광흡수층이 형성되어 있고, 상기 명암비 개선 광학필름은 최저 반사율이 0.5% 이하인, 명암비 개선 광학필름, 이를 포함하는 편광판 및 이를 포함하는 액정표시장치가 제공된다.
Bibliography:Application Number: WO2017KR13599