发明授权
US07456767B2 D/A converter circuit, organic EL drive circuit, and organic EL display
有权
D / A转换器电路，有机EL驱动电路和有机EL显示器
- 专利标题： D/A converter circuit, organic EL drive circuit, and organic EL display
- 专利标题（中）： D / A转换器电路，有机EL驱动电路和有机EL显示器
-
申请号： US10594703申请日： 2005-03-28
-
公开(公告)号： US07456767B2公开(公告)日： 2008-11-25
- 发明人: Shinichi Abe , Jun Maede , Masanori Fujisawa , Akio Fujikawa
- 申请人： Shinichi Abe , Jun Maede , Masanori Fujisawa , Akio Fujikawa
- 申请人地址： JP Tokyo
- 专利权人： Rohm Co., Ltd.
- 当前专利权人： Rohm Co., Ltd.
- 当前专利权人地址： JP Tokyo
- 代理机构： Mattingly, Stanger, Malur & Brundidge, PC
- 优先权： JP2004-095005 20040329
- 国际申请： PCT/JP2005/005673 WO 20050328
- 国际公布： WO2005/093958 WO 20051006
- 主分类号： H03M1/00
- IPC分类号： H03M1/00
摘要：
A D/A converter circuit includes a first current mirror circuit and a second current mirror circuit. The first current mirror circuit has a plurality of output side transistors provided correspondingly to digits of data to be converted and generates en analog current by obtaining, in at least one of the output side transistors, a current corresponding to the weight of the digit of the data being converted. The second current mirror circuit is connected on an upstream or downstream side of the output side transistors and corresponding to a lower digit of the data. An analog current is generated with the second current mirror circuit by obtaining a current corresponding to a weight of a digit that is less than 1.
公开/授权文献
信息查询
