发明名称 |
Backlight driver, display apparatus having the same and method of driving backlight |
摘要 |
A backlight driver includes an inverter controller, a dimming signal compensator and an inverter. The inverter controller generates a pulse width modulation signal in response to a control signal and outputs a first dimming signal that represents a duty ratio of the pulse width modulation signal and a second dimming signal that represents an amplitude of the pulse width modulation signal. The dimming signal compensator receives the first and second dimming signals, compares the first dimming signal with a predetermined reference duty ratio and compensates the second dimming signal in accordance with the compared result to generate a third dimming signal. The inverter outputs a driving voltage to drive the backlight and varies a voltage level of the driving voltage in response to the first and third dimming signals to control a brightness of the backlight.
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申请公布号 |
US7903081(B2) |
申请公布日期 |
2011.03.08 |
申请号 |
US20070846655 |
申请日期 |
2007.08.29 |
申请人 |
SAMSUNG ELECTRONICS CO., LTD. |
发明人 |
JANG HYEON-YONG;CHOI SEONG-SIK |
分类号 |
G09G3/36 |
主分类号 |
G09G3/36 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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