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    • 7. 发明申请
    • PIXEL CIRCUIT
    • 像素电路
    • US20120306843A1
    • 2012-12-06
    • US13484203
    • 2012-05-30
    • Wen-Chun WangWen-Tui LiaoTsung-Yu WangChih-Hung Huang
    • Wen-Chun WangWen-Tui LiaoTsung-Yu WangChih-Hung Huang
    • G09G5/00G09G3/30
    • G09G3/3258G09G2300/043G09G2300/0819G09G2310/0251G09G2360/16
    • A pixel circuit comprises a driving transistor, an electroluminescent unit, a pre-write unit, and a write unit. The electroluminescent unit is controlled by the driving transistor to illuminate in a drive period. The write unit is enabled in a write period recording a data voltage relating to an initial threshold voltage of the electroluminescent unit in first storage element. The pre-write unit is enabled in a pre-write period recording a threshold voltage of the driving transistor and the electroluminescent unit in second storage element. The threshold voltage and the data voltage, stored in the first and the second storage units, are supplied as a gate-source voltage of the driving transistor, so as to provide a compensated drive voltage, capable of compensating the variation of the threshold voltages of the driving transistor and the electroluminescent unit, driving the electroluminescent unit.
    • 像素电路包括驱动晶体管,电致发光单元,预写单元和写单元。 电致发光单元由驱动晶体管控制,以在驱动周期内照亮。 写入单元在写入周期中被使能,该写入周期记录与第一存储元件中的电致发光单元的初始阈值电压有关的数据电压。 预写单元在预写入周期中被使能,其将驱动晶体管和电致发光单元的阈值电压记录在第二存储元件中。 存储在第一和第二存储单元中的阈值电压和数据电压作为驱动晶体管的栅极 - 源极电压提供,以提供补偿的驱动电压,能够补偿阈值电压 驱动晶体管和电致发光单元,驱动电致发光单元。