Backlight units and current control methods thereof
US8779665B2 · kind B2 · utility
4Cited by
6References
19Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 7, 2011 |
| Grant date | Jul 15, 2014 |
| Priority date | — |
| Expiry date | Jun 4, 2032 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG09G2330/12
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A backlight unit including: at least one light emitting diode (“LED”) string having an anode, which receives a string current, and a chassis-grounded cathode; and a current source control unit which receives a driving current and outputs the string current to the at least one LED string, where the current source control unit senses the driving current and compensates for the string current based on the sensed driving current and a reference voltage.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.