Title:
CELLULOSE ESTER FILM, ITS PRODUCTION, THE FILM TO BE USED IN LIQUID CRYSTAL DISPLAY MEMBER, AND POLARIZING PLATE
Document Type and Number:
Japanese Patent JP3829902
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To obtain the subject film suppressed in wrinkles liable to occur when made thin with a thickness of as thin as <80 μm, thereby raised in production yield, and improved in transparency owing to resulting in a thinner film, and improved in retardation as well, therefore suitable for use in liquid crystal display members.
SOLUTION: This film is a cellulose ester film 20-60 μm in thickness and 2.88-3.00 in average substitution degree, being to be used in liquid crystal display members. This film is produced through film formation, by a solution casting method, of a dope composition where a film constituent material comprising a cellulose ester 2.88-3.00 in average substitution degree is dissolved in a solvent.
Inventors:
Tachibana Noriku
Takato Masato
Takato Masato
Application Number:
JP19029599A
Publication Date:
October 04, 2006
Filing Date:
July 05, 1999
Export Citation:
Assignee:
Konica Minolta Holdings Co., Ltd.
International Classes:
C08J5/18; G02B5/30; (IPC1-7): C08J5/18; G02B5/30; //C08L1:00
Domestic Patent References:
| JP11080381A |
Attorney, Agent or Firm:
Katsumi Utaka