Transmitting type display device
US4760389A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Nov 20, 1986 |
| Grant date | Jul 26, 1988 |
| Priority date | — |
| Expiry date | Nov 20, 2006 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG09G2360/144
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A transmitting type display device is disclosed, which comprises a transmitting type display panel to provide a display on the front surface, a light source for producing light illuminating the back surface of the transmitting type display and a brightness controller for controlling the intensity of light from the light source. The device comprises an ambient light detector disposed near the transmitting type display panel for detecting the intensity of ambient light incident on the display surface of the transmitting type display panel, and the brightness controller for controlling the light source according to the detection output of the ambient light detector such that the intensity of light from the light source to the transmitting type display panel is increased with an increase of the detected light intensity.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.