Backlight control device for liquid crystal display
US7002547B2 · kind B2 · utility
23Cited by
6References
13Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jan 22, 2003 |
| Grant date | Feb 21, 2006 |
| Priority date | — |
| Expiry date | Apr 1, 2024 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02B20/30
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A backlight control device for a liquid crystal display includes a light emitting diode (LED) driving circuit that is connected to a power supply circuit and drives the LED, and a current control device that detects brightness around the liquid crystal display and controls a driving current for the LED according to the detected brightness.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.