Transflective liquid crystal display device having particular angles between optical axes
US6999144B2 · kind B2 · utility
5Cited by
2References
3Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 11, 2004 |
| Grant date | Feb 14, 2006 |
| Priority date | — |
| Expiry date | May 11, 2024 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02F2413/08
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A transflective liquid crystal device capable of balancing a color difference between a reflective region and a transmissive region. The arrangement conditions of optical elements in the transflective LCD are as follows. The twist angle of the liquid crystal is about 40°˜80°. The angles βup, βdown, θup and θdown are about −20°˜−60°, −20°˜20°, 60°˜110°, −30°˜20° respectively. The angle between the retardation axes of the upper λ/2 plate and the upper λ/4 plate is about 30°˜100°, and the angle between the retardation axes of the lower λ/2 plate and the lower λ/4 plate is about 30°˜80°.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.