Reflection type liquid crystal display apparatus having a reflective pixel electrode with an elongated window over a photoconductive element
US5359441A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Dec 17, 1992 |
| Grant date | Oct 25, 1994 |
| Priority date | — |
| Expiry date | Dec 17, 2012 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02F2203/02
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A reflection type liquid crystal display apparatus is provided which is capable of displaying bright images by decreasing the loss of projected light. The reflection type liquid crystal display apparatus employs a polymer dispersed liquid crystal (PDLC) panel which assures a display mode (scattering or absorption mode) which does not employ a polarizing film, unlike a conventional liquid crystal panel. It has been found that such polarizing film reduce the efficiency with which the projected light is utilized. Since such a polarizing film is not used, and since the driving circuit portion which blocks the projected light and which serves as the non-opening portion can be utilized effectively for display, brightly displayed images can be obtained.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.