Color filter with perpendicular optical retardation and liquid crystal display device
US7965353B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 19, 2007 |
| Grant date | Jun 21, 2011 |
| Priority date | — |
| Expiry date | Oct 30, 2029 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02F2202/40
- WIPO fieldOptics
- WIPO sectorInstruments
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.