Transflective liquid crystal device with bright reflective display
US6285422A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | May 14, 1998 |
| Grant date | Sep 4, 2001 |
| Priority date | — |
| Expiry date | May 14, 2018 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02F1/133567
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A polarizer 14 is provided on the upper side of a liquid crystal panel 10, and a light scattering member 15 and a polarized light separator 16 are provided in turn on the lower side of the liquid crystal panel 10. Of light incident on the upper side of the polarized light separator 16, a linearly polarized light component parallel to the drawings is transmitted, a linearly polarized light component perpendicular to the drawings is reflected, and for light incident on the lower side thereof, a linearly polarized light component parallel to the drawings can be emitted upward. When the switch is off, the external light incident on the display device is reflected by the polarized light separator 16 to obtain a bright display, and when the switch is on, the incident external light is transmitted through the polarized light separator 16 to obtain a dark display. When the switch is off, light from a light source 17 is transmitted through the polarized light separator 16 and absorbed by the polarizer 12 to obtain dark display, and when the switch is on, the light is transmitted through the polarized light separator 16 and through the polarizer 14 to obtain a bright display.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.