Invention Grant
- Patent Title: Inverter driving circuit for LCD backlight
- Patent Title (中): 逆变驱动电路用于LCD背光
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Application No.: US11808161Application Date: 2007-06-07
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Publication No.: US07868560B2Publication Date: 2011-01-11
- Inventor: Jung Chul Gong , Byoung Own Min , Yu Jin Jang , Sang Cheol Shin
- Applicant: Jung Chul Gong , Byoung Own Min , Yu Jin Jang , Sang Cheol Shin
- Applicant Address: KR Gyunggi-do
- Assignee: Samsung Electro-Mechanics Co., Ltd.
- Current Assignee: Samsung Electro-Mechanics Co., Ltd.
- Current Assignee Address: KR Gyunggi-do
- Agency: McDermott Will & Emery LLP
- Priority: KR10-2006-0051610 20060608
- Main IPC: H05B41/36
- IPC: H05B41/36

Abstract:
An inverter driving circuit for an LCD is switched on/off more stably to improve heating radiation characteristics and drive efficiency. In the driving circuit, a controller supplies a first driving signal. A level shifter provides a second driving signal. A first delay circuit delays a rising section of the first driving signal to provide the first driving signal. A second delay circuit delays a falling section of the second driving signal to provide the second driving signal. Also, a power switching circuit is provided. The inverter driving circuit for the LCD, when a switching device thereof is turned off, has less current flowing in the switching device, thereby generating less heat. In addition, the inverter driving circuit prevents heat generation caused by current flowing reversely in the switching device, thereby enhancing drive efficiency.
Public/Granted literature
- US20070285381A1 Inverter driving circuit for LCD backlight Public/Granted day:2007-12-13
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