发明授权
US07812752B2 Digital-to-analog converter circuit, data driver and display device
失效
数模转换电路,数据驱动器和显示设备
- 专利标题: Digital-to-analog converter circuit, data driver and display device
- 专利标题(中): 数模转换电路,数据驱动器和显示设备
-
申请号: US12289266申请日: 2008-10-23
-
公开(公告)号: US07812752B2公开(公告)日: 2010-10-12
- 发明人: Hiroshi Tsuchi , Noboru Okuzono
- 申请人: Hiroshi Tsuchi , Noboru Okuzono
- 申请人地址: JP Kawasaki, Kanagawa
- 专利权人: NEC Electronics Corporation
- 当前专利权人: NEC Electronics Corporation
- 当前专利权人地址: JP Kawasaki, Kanagawa
- 代理机构: McGinn IP Law Group PLLC
- 优先权: JP2007-277710 20071025
- 主分类号: H03M1/66
- IPC分类号: H03M1/66
摘要:
A digital-to-analog converter circuit includes: a first subdecoder for receiving a first reference voltage group and selecting a reference voltage Vrk based upon an input digital signal; a second subdecoder for receiving a second reference voltage group and selecting a reference voltage Vr(k+1) based upon the input digital signal; a third subdecoder for receiving a third reference voltage group and selecting a reference voltage Vr(k+2) based upon the input digital signal; a fourth subdecoder for receiving the reference voltages that have been selected by respective ones of the first to third subdecoders, selecting two of these reference voltages (inclusive of selecting the same voltage redundantly) based upon an input digital signal, and outputting the selected two reference voltages; and an amplifier circuit for receiving the two reference voltages that have been selected by the fourth subdecoder and outputting a result of an operation applied to the two reference voltages.