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Patent Searching and Data


Title:
METHOD FOR PRODUCING THIN CIRCULARLY POLARIZING PLATE
Document Type and Number:
WIPO Patent Application WO/2021/014685
Kind Code:
A1
Abstract:
The present invention provides a method for producing a thin circularly polarizing plate, said method exhibiting excellent travelability during roll conveyance, while being suppressed in adhesive deformation defects due to tight winding during stagnation of the roll conveyance, thereby being suppressed in appearance defects of a film. A method for producing a circularly polarizing plate according to the present invention comprises: a step for forming a liquid crystal alignment fixing layer on the surface of a base material; a step for bonding the liquid crystal alignment fixing layer to the surface of a polarizing plate; a step for provisionally bonding a surface protective film to a surface of the polarizing plate in a removable manner, said surface being on the reverse side from the liquid crystal alignment fixing layer; a step for removing the base material from the liquid crystal alignment fixing layer; a step for forming an adhesive layer on the removal surface of the liquid crystal alignment fixing layer; and a step for provisionally bonding a separator to a surface of the adhesive layer in a removable manner, said surface being on the reverse side from the liquid crystal alignment fixing layer.

Inventors:
KOJIMA TADASHI (JP)
OGAWA KEITA (JP)
Application Number:
PCT/JP2020/012191
Publication Date:
January 28, 2021
Filing Date:
March 19, 2020
Export Citation:
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Assignee:
NITTO DENKO CORP (JP)
International Classes:
G02B5/30; B32B37/14; G02F1/1335; G02F1/13363
Foreign References:
JP2019101269A2019-06-24
JP2007304317A2007-11-22
Attorney, Agent or Firm:
MOMII Takafumi (JP)
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