发明申请
US20090066682A1 DISPLAY UNIT, DRIVE CIRCUIT, AMORPHOUS SILICON THIN-FILM TRANSISTOR, AND METHOD OF DRIVING OLED
有权
显示单元,驱动电路,非晶硅薄膜晶体管和驱动OLED的方法
- 专利标题: DISPLAY UNIT, DRIVE CIRCUIT, AMORPHOUS SILICON THIN-FILM TRANSISTOR, AND METHOD OF DRIVING OLED
- 专利标题(中): 显示单元,驱动电路,非晶硅薄膜晶体管和驱动OLED的方法
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申请号: US12139008申请日: 2008-06-13
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公开(公告)号: US20090066682A1公开(公告)日: 2009-03-12
- 发明人: Yoshinao Kobayashi , Takatoshi Tsujimura , Shinya Ono
- 申请人: Yoshinao Kobayashi , Takatoshi Tsujimura , Shinya Ono
- 申请人地址: US NY Armonk
- 专利权人: INTERNATIONAL BUSINESS MACHINES CORPORATION
- 当前专利权人: INTERNATIONAL BUSINESS MACHINES CORPORATION
- 当前专利权人地址: US NY Armonk
- 优先权: JP2002-50171 20020226
- 主分类号: G06F3/038
- IPC分类号: G06F3/038
摘要:
A display unit has an organic light emitting diode (OLED) 21 provided in correspondence with each of pixels and capable of emitting light by itself a drive transistor 22 for driving the OLED 21, a twig transistor 23 which is formed so as to have a portion of an electrode of the drive transistor 22 independently formed, and which is used to detect a threshold voltage (Vth) of the drive transistor 22, a compensating capacitor 28 in which the threshold voltage (Vth) detected by the twig transistor 23 is written, a signal capacitor 27 in which a signal voltage to be supplied to the drive transistor 22 is written, a first transistor 24 provided between a data line and the signal capacitor 27, a second transistor 25 provided between the signal capacitor 27 and the compensating capacitor 28, and a third transistor 26 provided between a gate electrode and another electrode of the twig transistor 23.
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