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Title:
LONG LIQUID CRYSTAL FILM, LONG POLARIZING FILM, IMAGE DISPLAY DEVICE, AND METHOD FOR PRODUCING LONG LIQUID CRYSTAL FILM
Document Type and Number:
WIPO Patent Application WO/2019/098215
Kind Code:
A1
Abstract:
Provided is a liquid crystal film with minimal in-plane unevenness in front color when incorporated into a display device, and with minimal individual differences in front color. Also provided are a long polarizing film, an image display device, and a method for producing a long liquid crystal film. The long liquid crystal film comprises at least: a long substrate, and a long liquid crystal layer having an in-plane phase difference. The long substrate has, in the longitudinal direction thereof, a plurality of band-shaped thickness variation regions which extend in the width direction. The liquid crystal layer has, at a position in the thickness unevenness region in the planar direction, a band-shaped in-plane phase difference unevenness region which extends in the width direction of the long substrate, and the phase difference gradient of the in-plane phase difference unevenness region falls within the range of 0.002 to 0.018 (nm/mm).

Inventors:
MAEDA YOSHINORI (JP)
Application Number:
PCT/JP2018/042074
Publication Date:
May 23, 2019
Filing Date:
November 14, 2018
Export Citation:
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Assignee:
FUJIFILM CORP (JP)
International Classes:
G02B5/30; G09F9/00; H01L27/32; H01L51/50; H05B33/02
Foreign References:
JP2008055890A2008-03-13
JP2007284571A2007-11-01
JP2002236216A2002-08-23
JPH09179125A1997-07-11
JP2004261791A2004-09-24
JP2004155921A2004-06-03
JP2017122776A2017-07-13
JP2008080577A2008-04-10
JP2007203630A2007-08-16
JPH11316378A1999-11-16
KR20090110082A2009-10-21
Attorney, Agent or Firm:
ITOH Hideaki et al. (JP)
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