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1. (WO2017038416) LONGITUDINALLY ORIENTED OPTICAL COMPENSATION LAYER-EQUIPPED POLARIZING PLATE AND ORGANIC EL PANEL USING SAME

Pub. No.:    WO/2017/038416    International Application No.:    PCT/JP2016/073518
Publication Date: Fri Mar 10 00:59:59 CET 2017 International Filing Date: Thu Aug 11 01:59:59 CEST 2016
IPC: G02B 5/30
B32B 7/02
H01L 51/50
H05B 33/02
Applicants: NITTO DENKO CORPORATION
日東電工株式会社
Inventors: IIDA, Toshiyuki
飯田 敏行
Title: LONGITUDINALLY ORIENTED OPTICAL COMPENSATION LAYER-EQUIPPED POLARIZING PLATE AND ORGANIC EL PANEL USING SAME
Abstract:
Provided is a longitudinally oriented optical compensation layer-equipped polarizing plate which exhibits an excellent reflective color phase and excellent viewing angle characteristics, and can be produced with extremely high production efficiency. The optical compensation layer-equipped polarizing plate is longitudinally oriented, and is to be used in an organic EL panel. The optical compensation layer-equipped polarizing plate is equipped with a longitudinally oriented polarizer, a longitudinally oriented first optical compensation layer, and a longitudinally oriented second optical compensation layer, in this order. The absorption axis direction of the polarizer is substantially perpendicular or parallel to the lengthwise direction. The first optical compensation layer exhibits refractive index properties which satisfy nx>ny≥nz, the Re(550) thereof is 100-180nm, the Nz coefficient thereof is 1.0-2.0, the relationship Re(450)nx>ny, the Re(550) thereof is 5-20nm, the Rth(550) thereof is -200 to -20nm, and the slow axis direction of the second optical compensation layer is substantially perpendicular or parallel to the lengthwise direction.