发明授权
- 专利标题: Thin film transistor circuit, light emitting display apparatus, and driving method thereof
- 专利标题(中): 薄膜晶体管电路,发光显示装置及其驱动方法
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申请号: US12667827申请日: 2008-07-29
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公开(公告)号: US08654114B2公开(公告)日: 2014-02-18
- 发明人: Hisae Shimizu , Katsumi Abe , Ryo Hayashi
- 申请人: Hisae Shimizu , Katsumi Abe , Ryo Hayashi
- 申请人地址: JP Tokyo
- 专利权人: Canon Kabushiki Kaisha
- 当前专利权人: Canon Kabushiki Kaisha
- 当前专利权人地址: JP Tokyo
- 代理机构: Fitzpatrick, Cella, Harper & Scinto
- 优先权: JP2007-209984 20070810
- 国际申请: PCT/JP2008/063932 WO 20080729
- 国际公布: WO2009/022563 WO 20090219
- 主分类号: G09G5/00
- IPC分类号: G09G5/00
摘要:
In order to suppress an influence of an electrical stress on a TFT characteristic in use of a TFT, a light emitting display apparatus according to the present invention comprises organic EL devices and driving circuits for driving the organic EL devices. The driving circuit includes plural pixels each having a thin film transistor of which a threshold voltage reversibly changes due to the electrical stress applied between a gate terminal and a source terminal, and a voltage applying unit which sets gate potential of the thin film transistor higher than source potential. The voltage applying unit applies the electrical stress between the gate terminal and the source terminal at a time when the thin film transistor is not driven, so as to drive the thin film transistor in a region that the threshold voltage is saturated to the electrical stress.
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