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AMOLED pixel driving circuit and method for compensating nonuniform brightness

机译:AMOLED像素驱动电路及补偿亮度不均匀的方法

摘要

The present invention provides an AMOLED pixel driving circuit and a pixel driving method. The AMOLED pixel driving circuit utilizes a 6T2C structure, comprising a first, a second, a third, a fourth, a fifth and a sixth thin film transistors (T1, T2, T3, T4, T5, T6), a first, a second capacitors (C1, C2) and an organic light emitting diode (OLED), and the first thin film transistor (T1) is a drive thin film transistor, and the fifth thin film transistor (T5) is a switch thin film transistor; and a first control signal (G1), a second control signal (G2) and a third control signal (G3) are involved, and the three are combined with one another and correspond to a data signal writing stage (1), a whole compensation stage (2), a charging stage (3) and a light emitting stage (4) one after another. The threshold voltage changes of the drive thin film transistor and the organic light emitting diode can be effectively compensated to make the display brightness of the AMOLED more even and to raise the display quality.
机译:本发明提供了一种AMOLED像素驱动电路和像素驱动方法。 AMOLED像素驱动电路利用6T2C结构,包括第一,第二,第三,第四,第五和第六个薄膜晶体管(T 1 ,T 2 ,T 3 ,T 4 ,T 5 ,T 6 ),第一,第二电容器( C 1 ,C 2 )和有机发光二极管(OLED),并且第一薄膜晶体管(T 1 )是驱动器薄膜晶体管,第五薄膜晶体管(T 5 )是开关薄膜晶体管。涉及第一控制信号(G 1 ),第二控制信号(G 2 )和第三控制信号(G 3 ) ,并且这三个相互组合,分别对应于数据信号写入阶段( 1 ),整个补偿阶段( 2 ),充电阶段( 3 )和一个发光级( 4 )一个接一个。可以有效地补偿驱动薄膜晶体管和有机发光二极管的阈值电压变化,以使AMOLED的显示亮度更加均匀并提高显示质量。

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