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    • 1. 发明申请
    • LED PIXEL UNIT CIRCUIT, DRIVING METHOD THEREOF, AND DISPLAY PANEL
    • LED像素单元电路,其驱动方法和显示面板
    • US20160071458A1
    • 2016-03-10
    • US14366881
    • 2013-10-15
    • BOE TECHNOLOGY CROUP CO., LTD.CHENGDU BOE OPTOELECTRONICS TECHNOLOGY CO., LTD.
    • Wen TANXiaojing QI
    • G09G3/32
    • G09G3/3233G09G2300/0814G09G2300/0819G09G2300/0842G09G2300/0861G09G2320/043
    • Provided are an AMOLED pixel unit circuit, a driving method thereof and a display panel for realizing the threshold voltage compensation. The AMOLED pixel unit circuit includes: a light emitting module; a driving module configured to drive the light emitting module; a light emitting control module configured to control the light emitting module to emit light; a threshold compensation module configured to perform threshold voltage compensation for the driving module; a data voltage writing module configured to input a data voltage to the driving module; and an initialization module configured to initialize the threshold compensation module. The threshold voltage compensation is realized by modifying the pre-charging fashion to fixedly set the gate of the driving TFT to be at a data level lower than the high level such that the subthreshold saturation cutoff state is reached before the drain-source voltage becomes zero in the compensation stage.
    • 提供了一种用于实现阈值电压补偿的AMOLED像素单元电路,其驱动方法和显示面板。 AMOLED像素单元电路包括:发光模块; 配置为驱动所述发光模块的驱动模块; 配置为控制所述发光模块发光的发光控制模块; 阈值补偿模块,被配置为对所述驱动模块执行阈值电压补偿; 数据电压写入模块,被配置为向所述驱动模块输入数据电压; 以及被配置为初始化所述阈值补偿模块的初始化模块。 通过修改预充电方式来实现阈值电压补偿,以将驱动TFT的栅极固定地设置为低于高电平的数据电平,使得在漏 - 源电压变为零之前达到亚阈值饱和截止状态 在补偿阶段。
    • 5. 发明申请
    • AMOLED PIXEL DRIVING CIRCUIT AND DRIVING METHOD THEREOF, AND ARRAY SUBSTRATE
    • AMOLED像素驱动电路及其驱动方法和阵列基板
    • US20160055797A1
    • 2016-02-25
    • US14436268
    • 2014-08-22
    • BOE TECHNOLOGY GROUP CO., LTD.CHENGDU BOE OPTOELECTRONICS TECHNOLOGY CO., LTD.
    • Wen TANXiaojing QI
    • G09G3/32
    • G09G3/3258G09G3/3208G09G3/3225G09G3/3233G09G2300/0408G09G2300/0819G09G2300/0842G09G2300/0852G09G2300/0861
    • There are disclosed an AMOLED pixel driving circuit and driving method thereof, and array substrate. The AMOLED pixel driving circuit comprises a driving thin film transistor (T1), and a gate initial voltage writing module (T2) configured to write an initial voltage signal into a gate of the driving thin film transistor (T1), a first terminal of a storage capacitor (C1), and a second terminal of the coupling capacitor (C2); a data voltage writing module (T3) configured to write a data voltage signal into a source of the driving thin film transistor (T1); a saturation discharging module (T4) configured to connect or disconnect a first terminal of a coupling capacitor (C2) with or from the drain of the driving thin film transistor (T1); an initializing module (T5) configured to connect or disconnect the source of the driving thin film transistor (T1) with or from the second power supply (Vss); and a light emitting control module (T6) configured to connect or disconnect one terminal of the organic light emitting diode (D1) with or from a drain of the driving thin film transistor (T1); the storage capacitor (C1); the coupling capacitor (C2); and an organic light emitting diode (D1). The AMOLED pixel driving circuit and driving method thereof can realize the purpose of sub-threshold saturation turn-off and compensating for threshold voltage of the driving TFT.
    • 公开了一种AMOLED像素驱动电路及其驱动方法以及阵列基板。 AMOLED像素驱动电路包括驱动薄膜晶体管(T1)和被配置为将初始电压信号写入驱动薄膜晶体管(T1)的栅极的栅极初始电压写入模块(T2),第一端子 存储电容器(C1)和耦合电容器(C2)的第二端子; 数据电压写入模块(T3),被配置为将数据电压信号写入到所述驱动薄膜晶体管(T1)的源极中; 饱和放电模块(T4),被配置为将耦合电容器(C2)的第一端子与驱动薄膜晶体管(T1)的漏极连接或断开; 初始化模块(T5),被配置为与所述第二电源(Vss)连接或断开所述驱动薄膜晶体管(T1)的源极; 以及发光控制模块(T6),被配置为将所述有机发光二极管(D1)的一个端子与所述驱动薄膜晶体管(T1)的漏极连接或断开; 存储电容器(C1); 耦合电容器(C2); 和有机发光二极管(D1)。 AMOLED像素驱动电路及其驱动方法可以实现亚阈值饱和关断和补偿驱动TFT阈值电压的目的。