Backlight control device for an LCD
US6069449A · kind A · utility
22Cited by
11References
10Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Apr 9, 1999 |
| Grant date | May 30, 2000 |
| Priority date | — |
| Expiry date | Apr 9, 2019 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02F2203/60
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A device applicable to a digital still camera or similar handy apparatus for controlling the brightness of a backlight used to backlight an LCD (Liquid Crystal Display) panel is disclosed. Power to be fed from a battery to the backlight and therefore the brightness of the backlight is increased on the basis of the temperature of the backlight and the kind and remaining power of the battery. The device prevents the brightness of the LCD panel from falling even in a low temperature environment and thereby implements easy-to-see image display little effected by temperature.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.