Invention Grant
- Patent Title: Patterned phase difference film, viewing angle switching polarizing plate, viewing angle switching system, and display device
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Application No.: US16191450Application Date: 2018-11-15
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Publication No.: US10585222B2Publication Date: 2020-03-10
- Inventor: Yukito Saito , Yujiro Yanai
- Applicant: FUJIFILM CORPORATION
- Applicant Address: JP Tokyo
- Assignee: FUJIFILM CORPORATION
- Current Assignee: FUJIFILM CORPORATION
- Current Assignee Address: JP Tokyo
- Agency: Solaris Intellectual Property Group, PLLC
- Priority: JP2016-101060 20160520
- Main IPC: G02F1/1335
- IPC: G02F1/1335 ; G02B5/30 ; G02F1/13363 ; H01L27/32 ; G02F1/13 ; H01L51/52 ; B29D11/00

Abstract:
A patterned phase difference film has an optically anisotropic layer alternately having a first phase difference region and a second phase difference region, in which the first phase difference region and the second phase difference region contain rod-like liquid crystals or discotic liquid crystals in the form of a hybrid alignment with mutually opposite rising directions of tilt angles, and has a hybrid alignment in which directions of in-plane slow axes and absolute values of in-plane phase differences of the first phase difference region and the second phase difference region are equal in a range of 54 to 74 nm, and in each of the first phase difference region and the second phase difference region, one of an absolute value of a phase difference at a polar angle of 40° and an absolute value of a phase difference at a polar angle of −40° is 135 to 353 nm and the other is 8 to 28 nm.
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