Title:
METHOD FOR PRODUCING LIQUID CRYSTAL FILM AND METHOD FOR PRODUCING FUNCTIONAL FILM
Document Type and Number:
WIPO Patent Application WO/2018/230395
Kind Code:
A1
Abstract:
Provided are: a method for producing a liquid crystal film with high productivity, which enables the achievement of a cholesteric liquid crystal layer that is capable of displaying a fine image with a desired color gradation; and a method for producing a functional film. This method for producing a liquid crystal film sequentially comprises in the following order: a coating step wherein a liquid crystal composition containing a cholesteric liquid crystal compound and a photosensitive chiral agent is applied onto the surface of a supporting body, while conveying the supporting body in the longitudinal direction; an irradiation step wherein a coating film of the liquid crystal composition in an undried state is irradiated with light that has a wavelength at which the chiral agent is photosensitized; an alignment step wherein liquid crystals are aligned by heating the coating film; and a curing step wherein the aligned coating film is cured. In the irradiation step, the coating film is irradiated with light through a patterned mask that is arranged on the supporting body side; and the patterned mask is a gradation patterned mask that has three or more regions having different transmittances with respect to light that has a wavelength at which the chiral agent is photosensitized. By irradiating the coating film with light through the gradation patterned mask in the irradiation step, regions of the coating film are irradiated with light at different irradiances.
Inventors:
HASEGAWA MASATAKA (JP)
NAGANO SATOSHI (JP)
INADA HIROSHI (JP)
NIMURA SHIGEAKI (JP)
NAGANO SATOSHI (JP)
INADA HIROSHI (JP)
NIMURA SHIGEAKI (JP)
Application Number:
PCT/JP2018/021560
Publication Date:
December 20, 2018
Filing Date:
June 05, 2018
Export Citation:
Assignee:
FUJIFILM CORP (JP)
International Classes:
G02B5/30
Domestic Patent References:
| WO2016076439A1 | 2016-05-19 |
Foreign References:
| JP2010033008A | 2010-02-12 | |||
| JP2016150286A | 2016-08-22 | |||
| JP2016012084A | 2016-01-21 | |||
| JP2011027833A | 2011-02-10 | |||
| JP2003344637A | 2003-12-03 |
Attorney, Agent or Firm:
WATANABE Mochitoshi et al. (JP)
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