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1. (WO2018021190) POLARIZING PLATE WITH PHASE DIFFERENCE LAYERS, AND ORGANIC EL DISPLAY DEVICE

Pub. No.:    WO/2018/021190    International Application No.:    PCT/JP2017/026496
Publication Date: Fri Feb 02 00:59:59 CET 2018 International Filing Date: Sat Jul 22 01:59:59 CEST 2017
IPC: G02B 5/30
G09F 9/30
H01L 27/32
H01L 51/50
H05B 33/02
Applicants: NITTO DENKO CORPORATION
日東電工株式会社
Inventors: HASEGAWA Yuki
長谷川 由紀
UMEMOTO Ayaka
梅本 彩香
TAKEDA Kentarou
武田 健太郎
Title: POLARIZING PLATE WITH PHASE DIFFERENCE LAYERS, AND ORGANIC EL DISPLAY DEVICE
Abstract:
In order to suppress nonuniformity of reflected light and improve visibility, this polarizing plate 10 with phase difference layers is provided with a polarizer 1, a first phase difference layer 2, and a second phase difference layer 3 in this order. The polarizer 1 and the first phase difference layer 2 are bonded via a first adhesive layer 4, and the first phase difference layer 2 and the second phase difference layer 3 are bonded via a second adhesive layer 5. The thicknesses of the first phase difference layer 2 and the second phase difference layer 3 are 5 μm or less. The average refractive index of the second adhesive layer 5 is 1.55 or greater, and the difference between the average refractive index of the second adhesive layer 5 and the average refractive index of the first phase difference layer 2 and the difference between the average refractive index of the second adhesive layer 5 and the average refractive index of the second phase difference layer 3 are less than 0.08.