Electric lamp and discharge devices: systems – Plural power supplies – Plural cathode and/or anode load device
Reexamination Certificate
2006-12-07
2008-12-02
Owens, Douglas W. (Department: 2821)
Electric lamp and discharge devices: systems
Plural power supplies
Plural cathode and/or anode load device
C345S076000, C345S077000
Reexamination Certificate
active
07459859
ABSTRACT:
An organic light emitting diode circuit of an organic light emitting display with voltage compensation technique includes a first capacitor, a first TFT, a second TFT, a third TFT, a reset circuit and an OLED. The first TFT has a first terminal for receiving a first voltage, and a second terminal coupled to its gate and a first end of the first capacitor. The second TFT has a first terminal for receiving a second reference voltage and a gate coupled to the gate of the first TFT. The third TFT is coupled to the first capacitor and receives a pixel voltage and scan signal. The reset circuit sets the first end of the first capacitor to have a first voltage level. The OLED has an anode coupled to a second terminal of the second TFT and a cathode for receiving a third reference voltage. The first voltage level is smaller than a voltage level of the first reference voltage.
REFERENCES:
patent: 7046240 (2006-05-01), Kimura
patent: 7245278 (2007-07-01), Hu et al.
patent: 7420530 (2008-09-01), Asano et al.
Guo Hong-Ru
Huang Chien-Hsiang
Tseng Ming-Chun
Chi Mei Optoelectronics Corp.
Owens Douglas W.
Vu Jimmy T
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