Invention Grant
- Patent Title: Color filter with perpendicular optical retardation and liquid crystal display device
- Patent Title (中): 具有垂直光学延迟和液晶显示装置的滤色镜
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Application No.: US12002760Application Date: 2007-12-19
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Publication No.: US07965353B2Publication Date: 2011-06-21
- Inventor: Sosuke Akao , Koichi Minato , Satoshi Ohkuma , Yoshinori Nagasaki , Takeshi Itoi , Mitsuhisa Hatashima
- Applicant: Sosuke Akao , Koichi Minato , Satoshi Ohkuma , Yoshinori Nagasaki , Takeshi Itoi , Mitsuhisa Hatashima
- Applicant Address: JP Tokyo
- Assignee: Toppan Printing Co., Ltd.
- Current Assignee: Toppan Printing Co., Ltd.
- Current Assignee Address: JP Tokyo
- Agency: Staas & Halsey LLP
- Priority: JP2006-341841 20061219
- Main IPC: G02F1/1335
- IPC: G02F1/1335 ; G09G3/38

Abstract:
A color filter comprising a substrate, a red pixel, green pixel and blue pixel, each being disposed on the substrate, wherein a perpendicular optical retardation RRth of the red pixel, a perpendicular optical retardation GRth of the green pixel, and a perpendicular optical retardation BRth of the blue pixel satisfy the following formulas (1) and (2): |(RRth−BRth)|−|(GRth−BRth)|≧0 (1) |(RRth−BRth)|−|(RRth−GRth)|≧0 (2) wherein RRth, GRth and BRth represent, respectively, a product of a thickness [nm] of a pixel and a value obtained by subtracting a value of thickness-wise refractive index from an average value of an in-plane refractive index of each of these pixels.
Public/Granted literature
- US20080143935A1 Color filter and liquid crystal display device Public/Granted day:2008-06-19
Information query
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