Cascaded, dual cell transflective liquid crystal display
US4637687A · kind A · utility
29Cited by
2References
6Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 14, 1984 |
| Grant date | Jan 20, 1987 |
| Priority date | — |
| Expiry date | Jun 14, 2004 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02F2203/09
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
The contrast ratio of a transflective liquid crystal display in the transmissive mode is improved by means of a cascaded, dual cell arrangement. By using cascaded cells, the light path and light absorption in the background portions of the light path is improved in the transmissive mode so that the contrast ratio in the transmissive mode can, if desired, be made equal to or better than the contrast ratio in the reflective mode.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.