Is a
Patent attributes
Current Assignee
Patent Jurisdiction
Patent Number
Patent Inventor Names
Takashi Takebe0
Kunio Shimizu0
Shigeki Oka0
Date of Patent
April 27, 2010
0Patent Application Number
115097240
Date Filed
August 25, 2006
0Patent Primary Examiner
Patent abstract
A polarizing plate includes two transparent supports A and B; and a polarizer sandwiched between the two transparent supports A and B; wherein (i) the transparent support A is a stretched cellulose ester film (a) which contains a non-phosphoric acid ester plasticizer and substantially does not contain a phosphoric acid ester plasticizer, and wherein (ii) the transparent support B is a stretched cellulose ester film (b) which has a retardation value R0 of from 0 nm to 10 nm and a retardation value Rt of from −30 nm to 20 nm, and the retardation value R0 and the retardation value Rt are defined by the following formulas (I) and (II):Ro=(nx−ny)×d Formula (I):Rt={(nx+ny)/2−nz}×d. Formula (II):
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