Is a
Patent attributes
Current Assignee
Patent Jurisdiction
Patent Number
Patent Inventor Names
Shigeki Oka0
Noriki Tachibana0
Date of Patent
July 6, 2010
0Patent Application Number
118622820
Date Filed
September 27, 2007
0Patent Primary Examiner
Patent abstract
An IPS (In Plane Switching) mode type liquid crystal display apparatus having polarizing plates on both sides of a liquid crystal cell, wherein the polarizing plate protective film used between a liquid crystal cell and polarizer on a backlight light-source side is a cellulose ester film having a thickness of 20-50 μm and a retardation value of 0 nm≦Ro≦2 nm and −5 nm≦Rt≦5 nm, and this cellulose ester film is characterized by temperature variation ΔRt(t) lying in the range 0 nm≦ΔRt(t)≦7 nm and humidity variation ΔRt(h) lying in the range 0 nm≦ΔRt(h)≦20 nm.
Timeline
No Timeline data yet.
Further Resources
No Further Resources data yet.
