Title:
OPTICAL FILM, CIRCULAR POLARIZING PLATE, AND ORGANIC ELECTROLUMINESCENCE DISPLAY DEVICE
Document Type and Number:
WIPO Patent Application WO/2021/060378
Kind Code:
A1
Abstract:
The present invention provides: an optical film that is thin, is suitable for continuous production, and suppresses color tinting of black color in a front direction and a diagonal direction when used as a circular polarizing plate in an organic EL display device; a circular polarizing plate; and an organic EL display device. The optical film of the present invention has a long support, a first optical anisotropic layer, a second optical anisotropic layer, and a third optical anisotropic layer in this order, wherein: the thickness of the long support is 10-45 μm; the first optical anisotropic layer is a layer formed by using a rod-shaped liquid crystal compound; the second optical anisotropic layer is a layer formed by fixing a twist-aligned liquid crystal compound having a spiral axis in a thickness direction; the third optical anisotropic layer is a layer formed by using a liquid crystal compound; and the optical anisotropic layers each exhibit predetermined optical characteristics.
Inventors:
YANOKUCHI SATOSHI (JP)
YOSHIDA SHINPEI (JP)
TAKAHASHI YUTA (JP)
YOSHIDA SHINPEI (JP)
TAKAHASHI YUTA (JP)
Application Number:
PCT/JP2020/036038
Publication Date:
April 01, 2021
Filing Date:
September 24, 2020
Export Citation:
Assignee:
FUJIFILM CORP (JP)
International Classes:
G02B5/30; G09F9/00; G09F9/30; H01L27/32; H01L51/50; H05B33/02
Foreign References:
| JP2004258623A | 2004-09-16 | |||
| JP2006201746A | 2006-08-03 | |||
| JP2007279656A | 2007-10-25 | |||
| JP2007212959A | 2007-08-23 | |||
| JP2003215341A | 2003-07-30 | |||
| JP2001021720A | 2001-01-26 | |||
| JP2016528543A | 2016-09-15 |
Attorney, Agent or Firm:
ITOH Hideaki et al. (JP)
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