METHOD FOR MANUFACTURING PHASE DIFFERENCE FILM

WIPO Patent Application WO/2018/179973

A1

The present invention provides a method for manufacturing a phase difference film, by means of which bright spots are reduced. This method for manufacturing a phase difference film comprises: a step for forming a first coating film 12 on a continuous film support 11 being conveyed, by coating the same with an alignment layer forming material for forming an alignment layer having an alignment restriction force for liquid crystal components, and drying the alignment layer forming material; a step for forming the alignment layer by applying the alignment restriction force by irradiating the first coating film 12 with polarized light; a step for forming a second coating film on the alignment layer by coating the alignment layer with a liquid crystal layer forming material including a liquid crystal compound and drying the liquid crystal layer forming material; and a step for forming a liquid crystal layer by aligning the liquid crystal compound in the second coating film and fixing the alignment, the method comprising a step for heating the first coating film 12 on a heat roll 20 under the action of a pressing force on the first coating film 12 after the step for forming the first film 12, and before the step for forming the alignment layer.

YAMAMOTO TAKASHI (JP)
NAGANO SATOSHI (JP)
OI YUKI (JP)
SATO SHO (JP)
HASEGAWA MASATAKA (JP)

PCT/JP2018/005493

October 04, 2018

February 16, 2018

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FUJIFILM CORP (JP)

G02B5/30; B05D1/38; B05D3/02; B05D3/12; B05D7/04; G02F1/13363

WO2013054673A1

2013-04-18

JP2004046194A	2004-02-12
JP2014182200A	2014-09-29
JP2014115604A	2014-06-26

NAKASHIMA Junko et al. (JP)

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