Driving circuit of pixel unit and driving method thereof, and display device

    公开(公告)号:US10249239B2

    公开(公告)日:2019-04-02

    申请号:US14436912

    申请日:2014-09-17

    Inventor: Ying Wang

    Abstract: The present invention provides a driving circuit of pixel unit and a driving method thereof, and a display device. The driving circuit of pixel unit is configured to drive sub-pixel units on a display panel, and comprises a driving power supply signal port connected to the sub-pixel units through power supply signal lines and at least one compensation unit. The driving power supply signal port is configured to transfer a driving voltage output from the driving power supply to each of the sub-pixel units through the power supply signal lines. The compensation unit is configured to perform real-time compensation on voltage drops on the power supply signal lines when the sub-pixel units display different gray levels.

    Compensation circuit design of active organic light emitting diode display system

    公开(公告)号:US09640113B2

    公开(公告)日:2017-05-02

    申请号:US14554908

    申请日:2014-11-26

    Inventor: Ying Wang

    Abstract: A compensation circuit of IR drop of a display system, the display system having m pixel circuits, the compensation circuit comprising: m current comparators composed of TFT devices, wherein each current comparator is configured to compare the input current signal with a reference current signal and output a voltage signal according to the comparison result; m encoders composed of TFT devices, wherein each encoder is configured to encode the voltage signal into a digital voltage signal to output; a controller which is configured to calculate a difference value between the digital voltage signal and an ideal digital voltage signal and generate a digital difference signal; m compensation voltage generators each of which is configured to convert the digital difference signal into a compensation voltage signal, and write the compensation voltage signal into a corresponding pixel circuit according to control of a timing control signal; and a driver IC.

    Pixel Driving Circuit, Driving Method, Array Substrate and Display Apparatus
    63.
    发明申请
    Pixel Driving Circuit, Driving Method, Array Substrate and Display Apparatus 审中-公开
    像素驱动电路,驱动方法,阵列基板和显示装置

    公开(公告)号:US20160372049A1

    公开(公告)日:2016-12-22

    申请号:US14771349

    申请日:2014-10-24

    Abstract: Provided are a pixel driving circuit, a driving method, an array substrate and a display apparatus. The pixel circuit comprises: a data line, a gate line, a first power line, a second power line, a reference signal line, a light emitting device, a driving transistor, a storage capacitor, a reset unit, a data writing unit, a compensation unit and a light emitting control unit. The pixel driving circuit can compensate and eliminate the display nonuniformity caused by the threshold voltage difference of the driving transistors.

    Abstract translation: 提供了像素驱动电路,驱动方法,阵列基板和显示装置。 像素电路包括:数据线,栅极线,第一电源线,第二电源线,参考信号线,发光器件,驱动晶体管,存储电容器,复位单元,数据写入单元, 补偿单元和发光控制单元。 像素驱动电路可以补偿和消除由驱动晶体管的阈值电压差引起的显示不均匀性。

    Gate driving circuit and gate driving method, gate driver on array (GOA) and display device
    64.
    发明授权
    Gate driving circuit and gate driving method, gate driver on array (GOA) and display device 有权
    栅极驱动电路和栅极驱动方法,栅极驱动器阵列(GOA)和显示器件

    公开(公告)号:US09489896B2

    公开(公告)日:2016-11-08

    申请号:US14435645

    申请日:2014-09-05

    Inventor: Ying Wang

    Abstract: The present disclosure provides a gate driving circuit which can be applied in a display panel. The gate driving circuit may include a driving signal output unit, provided with a storage capacitor; a driving control unit, configured to sample an input signal in a first period of each scanning cycle, control the driving signal output unit to output a first gate driving signal which is configured to turn on thin film transistors (TFTs) in a display panel in a second period of each scanning cycle, and control the driving signal output unit to output a second gate driving signal which is configured to turn off the TFTs in the display panel by using the storage capacitor across which a voltage difference is within a predetermined range in a third period of each scanning cycle; and a compensating unit, configured to maintain the voltage difference across the storage capacitor to be within the predetermined range in the third period of each scanning cycle.

    Abstract translation: 本公开提供了可应用于显示面板的栅极驱动电路。 栅极驱动电路可以包括设置有存储电容器的驱动信号输出单元; 驱动控制单元,被配置为在每个扫描周期的第一周期中对输入信号进行采样,控制所述驱动信号输出单元以输出第一栅极驱动信号,所述第一栅极驱动信号被配置为在显示面板中导通薄膜晶体管(TFT) 每个扫描周期的第二周期,并且控制驱动信号输出单元,以输出第二栅极驱动信号,其被配置为通过使用电压差在预定范围内的存储电容器来关闭显示面板中的TFT 每个扫描周期的第三个周期; 以及补偿单元,被配置为在每个扫描周期的第三周期内将保持电容器两端的电压差保持在预定范围内。

    Pixel Driving Circuit, Driving Method, Array Substrate and Display Apparatus
    65.
    发明申请
    Pixel Driving Circuit, Driving Method, Array Substrate and Display Apparatus 审中-公开
    像素驱动电路,驱动方法,阵列基板和显示装置

    公开(公告)号:US20160253959A1

    公开(公告)日:2016-09-01

    申请号:US14648670

    申请日:2014-09-30

    Abstract: There provide a pixel driving circuit and driving method thereof, an array substrate and display apparatus, wherein the pixel driving circuit comprises: a data line; a gate line; a first power supply line; a second power supply line; a light emitting device connected to the second power supply line; a driving transistor connected to the first power supply line; a storage capacitor having a first terminal connected to a gate of the driving transistor and configured to transfer information including the data voltage to the gate of the driving transistor; a resetting unit configured to reset a voltage across the storage capacitor as a predetermined signal voltage; a data writing unit configured to write information including the data voltage into the second terminal of the storage capacitor; a compensating unit configured to write information including a threshold voltage of the driving transistor and information of the first power supply voltage into the first terminal of the storage capacitor; and a light emitting control unit connected to the storage capacitor, the driving transistor and the light emitting device, and configured to control the driving transistor to drive the light emitting device to emit light.

    Abstract translation: 提供像素驱动电路及其驱动方法,阵列基板和显示装置,其中像素驱动电路包括:数据线; 一条门线 第一电源线; 第二电源线; 连接到第二电源线的发光器件; 连接到所述第一电源线的驱动晶体管; 存储电容器,其具有连接到所述驱动晶体管的栅极的第一端子,并且被配置为将包括所述数据电压的信息传送到所述驱动晶体管的栅极; 复位单元,被配置为将存储电容器两端的电压复位为预定的信号电压; 数据写入单元,被配置为将包含数据电压的信息写入存储电容器的第二端子; 补偿单元,被配置为将包括驱动晶体管的阈值电压的信息和第一电源电压的信息写入到存储电容器的第一端子中; 以及发光控制单元,连接到存储电容器,驱动晶体管和发光器件,并且被配置为控制驱动晶体管驱动发光器件发光。

    Pixel circuit of active matrix organic light emitting diode, driving method of the same, and display apparatus
    66.
    发明授权
    Pixel circuit of active matrix organic light emitting diode, driving method of the same, and display apparatus 有权
    有源矩阵有机发光二极管的像素电路,驱动方法及显示装置

    公开(公告)号:US09424780B2

    公开(公告)日:2016-08-23

    申请号:US14342053

    申请日:2013-07-31

    Inventor: Ying Wang

    Abstract: A pixel circuit, a driving method, and a display apparatus, wherein the pixel circuit includes: a first switch transistor having a source connected to a data signal terminal, and a gate connected to a first control signal terminal; a first capacitor having a first terminal connected to a drain of the first switch transistor; a second capacitor having a first terminal connected to a second voltage signal terminal, and a second terminal connected to a second terminal of the first capacitor; a third capacitor having a first terminal connected to the first control signal terminal, and a second terminal connected to a gate of a driving transistor; a second switch transistor having a source connected to the gate of the driving transistor, a drain connected to a drain of the driving transistor, and a gate connected to the first control signal terminal; and a third, fourth, fifth and sixth switch transistors.

    Abstract translation: 一种像素电路,驱动方法和显示装置,其中像素电路包括:具有连接到数据信号端子的源极和与第一控制信号端子连接的栅极的第一开关晶体管; 第一电容器,其具有连接到所述第一开关晶体管的漏极的第一端子; 第二电容器,其具有连接到第二电压信号端子的第一端子,以及连接到所述第一电容器的第二端子的第二端子; 第三电容器,具有连接到第一控制信号端子的第一端子和连接到驱动晶体管的栅极的第二端子; 第二开关晶体管,其源极连接到驱动晶体管的栅极,漏极连接到驱动晶体管的漏极,栅极连接到第一控制信号端子; 以及第三,第四,第五和第六开关晶体管。

    Pixel circuit and organic light-emitting display comprising the same
    67.
    发明授权
    Pixel circuit and organic light-emitting display comprising the same 有权
    像素电路和包括其的有机发光显示器

    公开(公告)号:US09311852B2

    公开(公告)日:2016-04-12

    申请号:US14344491

    申请日:2013-06-18

    Inventor: Ying Wang

    Abstract: Provided are a pixel circuit and an organic light-emitting display. The pixel circuit comprises a driving thin film transistor and a light-emitting diode which is connected between a low level input terminal and a high level input terminal of a driving power supply in series, the pixel circuit further comprises a first capacitor and a driving control unit, a first terminal of the first capacitor is electrically connected with a first electrode of the driving thin film transistor through the driving control unit, a second terminal of the first capacitor is connected with a gate of the driving thin film transistor, a second electrode of the driving thin film transistor is electrically connected with the gate of the driving thin film transistor through the driving control unit, the driving control unit is connected with a gate line and a data line. Since respective pixel circuits may output uniform currents, the brightness of light-emitting diodes in the pixel circuits is uniform, and in turn the display brightness of the organic light-emitting display comprising the pixel circuits is uniform.

    Abstract translation: 提供像素电路和有机发光显示器。 像素电路包括串联连接在驱动电源的低电平输入端子和高电平输入端子之间的驱动薄膜晶体管和发光二极管,像素电路还包括第一电容器和驱动控制 单元,第一电容器的第一端子通过驱动控制单元与驱动薄膜晶体管的第一电极电连接,第一电容器的第二端子与驱动薄膜晶体管的栅极连接,第二电极 所述驱动薄膜晶体管通过所述驱动控制单元与所述驱动薄膜晶体管的栅极电连接,所述驱动控制单元与栅极线和数据线连接。 由于各像素电路可以输出均匀的电流,所以像素电路中的发光二极管的亮度是均匀的,因此包括像素电路的有机发光显示器的显示亮度是均匀的。

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