Transflective liquid crystal display device having particular angle between initial liquid crystal alignment direction and pixel electrode projection direction
US7808589B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 24, 2007 |
| Grant date | Oct 5, 2010 |
| Priority date | — |
| Expiry date | Dec 5, 2028 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02F2201/122
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
In a transflective liquid crystal display device, assuming that a narrower angle among angles formed by the initial liquid crystal alignment direction of a liquid crystal layer, and the projection direction of a pixel electrode of a transmissive unit is θt and that a narrower angle among angles formed by the initial liquid crystal alignment direction of the liquid crystal layer, and the projection direction of a pixel electrode of a reflective unit is θr, (1) when the liquid crystal layer possesses a positive-type liquid crystal, the relation of θt>θr is satisfied, and (2) when the liquid crystal layer possesses a negative-type liquid crystal, the relation of θr>θt is satisfied. The relations are satisfied by slanting or bending at least one of the pixel electrodes, and the reflectivity is improved.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.