Invention Grant
US08237691B2 Display driver circuit and DAC of a display device with partially overlapping positive and negative voltage ranges and reduced transistor breakdown voltage
失效
显示器件的显示驱动电路和DAC具有部分重叠的正负电压范围和降低的晶体管击穿电压
- Patent Title: Display driver circuit and DAC of a display device with partially overlapping positive and negative voltage ranges and reduced transistor breakdown voltage
- Patent Title (中): 显示器件的显示驱动电路和DAC具有部分重叠的正负电压范围和降低的晶体管击穿电压
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Application No.: US12167263Application Date: 2008-07-03
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Publication No.: US08237691B2Publication Date: 2012-08-07
- Inventor: Kazuo Nakamura
- Applicant: Kazuo Nakamura
- Applicant Address: JP Kanagawa
- Assignee: Renesas Electronics Corporation
- Current Assignee: Renesas Electronics Corporation
- Current Assignee Address: JP Kanagawa
- Agency: Young & Thompson
- Priority: JP2007-176105 20070704
- Main IPC: G06F3/038
- IPC: G06F3/038
Abstract:
A display driver circuit of a display device includes: a first DA converter for converting a digital data to a gray-scale potential within a first potential range; and a second DA converter for converting a digital data to a gray-scale potential within a second potential range lower than the first potential range. The first DA converter includes a first transistor of a first conductivity type outputting a gray-scale potential not less than the common potential. The second DA converter includes: a second transistor of the first conductivity type outputting a gray-scale potential not less than the common potential; and a third transistor of a second conductivity type outputting a gray-scale potential not more than the common potential. A substrate potential applied to a back gate of the second transistor is lower than a substrate potential applied to a back gate of the first transistor.
Public/Granted literature
- US20090009538A1 DISPLAY DRIVER CIRCUIT OF DISPLAY DEVICE Public/Granted day:2009-01-08
Information query
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