Title:
光学フィルムの製造方法及び光学フィルム
Document Type and Number:
Japanese Patent JP4993351
Kind Code:
B2
Abstract:
An aspect of the present invention defines the composition and the physical properties of a coating solution so that drying unevenness is not caused even when the coated film is dried rapidly based on the premise that the coating solution containing a liquid crystal compound is coated on a flexible strip substrate being transferred in an amount of 4.5 to 12 mL/m2. In the invention, a fluoroaliphatic-group-containing polymer including prescribed repeating units and also satisfying the prescribed condition is added to a coating solution for forming an optically anisotropic layer. As a result, the fluoroaliphatic-group-containing polymer travels rapidly to the interface between the coating solution and air in initial drying after coating, stabilizing the air interface of the coated film. Use of the invention therefore prevents drying unevenness even when the coating amount is increased and the solution is rapidly dried under conditions that tend to cause drying unevenness.
Inventors:
Kazuhiro Shimoda
Takeshi Yamamoto
Takeshi Yamamoto
Application Number:
JP2007044669A
Publication Date:
August 08, 2012
Filing Date:
February 23, 2007
Export Citation:
Assignee:
FUJIFILM Corporation
International Classes:
G02B5/30; B32B27/30
Domestic Patent References:
| JP2004136883A | ||||
| JP2006091205A | ||||
| JP2008190841A | ||||
| JP2008194659A | ||||
| JP2008197170A | ||||
| JP2008231396A |
Attorney, Agent or Firm:
Kenzo Matsuura