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    • 1. 发明申请
    • Pixel driver circuit
    • 像素驱动电路
    • US20070182671A1
    • 2007-08-09
    • US10554795
    • 2004-09-23
    • Arokia NathanKapil SakariyaPeyman ServatiShahin Jafarabadiashtiani
    • Arokia NathanKapil SakariyaPeyman ServatiShahin Jafarabadiashtiani
    • G09G3/30
    • G09G3/3241G09G3/325G09G3/3266G09G3/3283G09G2300/0417G09G2300/0809G09G2300/0819G09G2300/0842G09G2320/0646H05B33/0896H05B37/0209
    • A pixel circuit for use in a display comprising a plurality of pixels is provided. The load-balanced current mirror pixel circuit can compensate for device degradation and/or mismatch, and changing environmental factors like temperature and mechanical strain. The pixel circuit comprises a pixel drive circuit comprising, switching circuitry, a current mirror having a reference transistor and a drive transistor, the reference transistor and the drive transistor each having a first and second node and a gate, the gate of the reference transistor being connected to the gate of the drive transistor; and a capacitor connected between the gate of the reference transistor and a ground potential, and a load connected between the current mirror and a ground potential, the load having a first load element and a second load element, the first load element being connected to the first node of the reference transistor and the second load element being connected to the first node of the drive transistor.
    • 提供了用于包括多个像素的显示器中的像素电路。 负载平衡电流镜像素电路可以补偿器件劣化和/或失配,并改变环境因素,如温度和机械应变。 像素电路包括像素驱动电路,其包括开关电路,具有参考晶体管和驱动晶体管的电流镜,所述参考晶体管和驱动晶体管各自具有第一和第二节点和栅极,所述参考晶体管的栅极为 连接到驱动晶体管的栅极; 连接在参考晶体管的栅极和接地电位之间的电容器以及连接在电流反射镜和接地电位之间的负载,负载具有第一负载元件和第二负载元件,第一负载元件连接到 参考晶体管的第一节点和第二负载元件连接到驱动晶体管的第一节点。
    • 8. 发明申请
    • Pixel current driver for organic light emitting diode displays
    • 有机发光二极管显示器的像素电流驱动器
    • US20060027807A1
    • 2006-02-09
    • US11247455
    • 2005-10-11
    • Arokia NathanPeyman ServatiKapil Sakariya
    • Arokia NathanPeyman ServatiKapil Sakariya
    • H01L29/04
    • G09G3/3233G09G3/3241G09G2300/0804G09G2320/0223H01L27/12H01L27/283H01L27/3276
    • A pixel current driver comprises a plurality of thin film transistors (TFTs) each having dual gates and for driving OLED layers. A top gate of the dual gates is formed between a source and a drain of each of the thin film transistors, to thereby minimize parasitic capacitance. The top gate is grounded or electrically tied to a bottom gate. The plurality of thin film transistors may be two thin film transistors formed in voltage-programmed manner or five thin film transistors formed in a current-programmed ΔVT-compensated manner. Other versions of the current-programmed circuit with different numbers of thin film transistors are also presented that compensate for δVT. The OLED layer are continuous and vertically stacked on the plurality of thin film transistors to provide an aperture ratio close to 100%.
    • 像素电流驱动器包括多个薄膜晶体管(TFT),每个薄膜晶体管具有双栅极和用于驱动OLED层。 在每个薄膜晶体管的源极和漏极之间形成双栅极的顶栅,从而使寄生电容最小化。 顶门接地或电连接到底栅。 多个薄膜晶体管可以是以电压编程方式形成的两个薄膜晶体管或以电流编程的DeltaV补偿方式形成的五个薄膜晶体管。 还提供了具有不同数量的薄膜晶体管的电流编程电路的其他版本,其补偿deltaV 。 OLED层在多个薄膜晶体管上连续且垂直地堆叠,以提供接近100%的孔径比。