发明申请
US20080272710A1 Reference Current Generating Circuit, Organic El Drive Circuit and Organic El Display Device Employing It
有权
参考电流发生电路,有机EL驱动电路和使用它的有机El显示器件
- 专利标题: Reference Current Generating Circuit, Organic El Drive Circuit and Organic El Display Device Employing It
- 专利标题(中): 参考电流发生电路,有机EL驱动电路和使用它的有机El显示器件
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申请号: US11719997申请日: 2005-11-16
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公开(公告)号: US20080272710A1公开(公告)日: 2008-11-06
- 发明人: Shinichi Abe , Hiroshi Yaguma
- 申请人: Shinichi Abe , Hiroshi Yaguma
- 优先权: JP2004-338550 20041124
- 国际申请: PCT/JP05/21020 WO 20051116
- 主分类号: H05B37/02
- IPC分类号: H05B37/02 ; G09G3/00
摘要:
An organic EL display device having an organic EL drive circuit has a reference current generation circuit that switches the column line drive in response to changing of the dot arrangement of R, G and B through changeover switch circuits. Three D/A converter blocks constituted by a plurality of switch circuits and a plurality of output side transistors of a current mirror circuit are provided to produce reference currents for R, G and B that are selectively switched by a first, a second and a third changeover switch circuit. As a result, the D/A converter blocks corresponding to the respective terminal pins dynamically produce drive currents for the respective terminal pins so as to correspond to the dot arrangement of R, G and B on the organic EL panel.
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