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Title:
POLYMER DISPERSION TYPE LIQUID CRYSTAL FILM, AND METHOD FOR PRODUCING POLYMER DISPERSION TYPE LIQUID CRYSTAL FILM
Document Type and Number:
WIPO Patent Application WO/2023/032675
Kind Code:
A1
Abstract:
The present invention provides a polymer dispersion type liquid crystal film capable of switching between a transparent state and a scattered state in only a prescribed region. The polymer dispersion type liquid crystal film according to the present invention comprises, in the following order: a first transparent conductive film (10); a polymer dispersion type liquid crystal layer (20) including a polymer matrix (22) and liquid crystal droplets (24) dispersed in the polymer matrix; and a second transparent conductive film (30). The polymer dispersion type liquid crystal layer comprises, in a plan view, a first region (A) and a second region (B) in which the amounts of change in haze caused by the application of a voltage differ, and, in the first region, the amount of change in haze caused by the application of a voltage is smaller than said amount of change in the second region. The liquid crystal droplets in the first region include a non-polymerizable liquid crystal compound (24a) and a liquid crystal polymer (24c).

Inventors:
OTSUKA MASANORI (JP)
HIRAI MARIKO (JP)
YOSHIKAWA JIN (JP)
Application Number:
PCT/JP2022/031088
Publication Date:
March 09, 2023
Filing Date:
August 17, 2022
Export Citation:
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Assignee:
NITTO DENKO CORP (JP)
International Classes:
G02F1/1334; G02F1/13; G02F1/137
Domestic Patent References:
WO2000037585A12000-06-29
WO1993022397A11993-11-11
Foreign References:
JP2020109441A2020-07-16
JP2019514047A2019-05-30
JP2012137756A2012-07-19
JP2002533742A2002-10-08
EP0358208B11994-03-02
US5211877A1993-05-18
EP0066137B11985-07-31
US4388453A1983-06-14
EP0261712A11988-03-30
DE19504224A11995-08-24
DE4408171A11995-09-14
GB2280445B1998-02-11
JPH04355719A1992-12-09
JP2015040994A2015-03-02
JP2019005698A2019-01-17
Attorney, Agent or Firm:
MOMII Takafumi (JP)
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