OPTICAL LAMINATE AND OPTICAL DISPLAY APPARATUS COMPRISING THE SAME

Disclosed are an optical laminate and an optical display device including the same. The optical laminate includes: a polarizer; and a positive C layer stacked on a light incident surface of the polarizer, wherein the positive C layer has an in-plane retardation of 0 nm to 30 nm and an out-of-plane r...

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Bibliographische Detailangaben
Hauptverfasser: LEE BEOM DEOK, KIM BONG CHOON, HONG WAN TAEK, SHIN SEUNG MI, LEE SEONG HOON, JEONG SEON GYEONG
Format: Patent
Sprache:eng ; kor
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Zusammenfassung:Disclosed are an optical laminate and an optical display device including the same. The optical laminate includes: a polarizer; and a positive C layer stacked on a light incident surface of the polarizer, wherein the positive C layer has an in-plane retardation of 0 nm to 30 nm and an out-of-plane retardation of −50 nm to −15 nm at a wavelength of 550 nm, and in the optical laminate, and the in-plane retardation of the positive C layer at a wavelength of 550 nm and an absolute value of a tilted angle of a slow axis of the positive C layer with respect to a light absorption axis of the polarizer satisfy formula 1. The present invention provides the optical laminate which improves a contrast ratio at a diagonal angle and reduces difference in color visibility at left and right sides when applied to a panel of an optical display device. 편광자; 및 상기 편광자의 광 입사면에 적층된 포지티브 C 층을 포함하는 광학 적층체로서, 상기 포지티브 C 층은 파장 550nm에서 면내 위상차가 0nm 내지 30nm이고 두께 방향 위상차가 -50nm 내지 -15nm이고, 상기 광학 적층체에 있어서, 상기 포지티브 C 층의 파장 550nm에서 면내 위상차, 상기 편광자의 흡수축에 대해 상기 포지티브 C 층의 지상축 간에 이루는 각도의 절대값은 식 1를 만족하는 것인, 광학 적층체 및 이를 포함하는 광학표시장치가 제공된다.