公开(公告)号：US09728128B2

公开(公告)日：2017-08-08

申请号：US14801786

申请日：2015-07-16

Applicant: Shanghai Tianma AM-OLED Co., Ltd. ,  TIANMA MICRO-ELECTRONICS CO., LTD.

Inventor： Song Li ,  Liyuan Luo ,  Gang Liu

IPC: G09G3/3233

CPC classification number: G09G3/3233 ,  G09G2300/0819 ,  G09G2300/0842 ,  G09G2300/0852 ,  G09G2300/0861

Abstract: A circuit is disclosed. The circuit includes a first transistor, to respond to a first scanning signal and to transmit a first voltage, a first capacitor, to store the first voltage, and an organic light emitting diode. The circuit also includes a second transistor, to provide a current to the organic light emitting diode, a third transistor, to respond to a second scanning signal and to transmit a first potential signal to the second transistor, and a fourth transistor, to respond to the first scanning signal and to form a diode connection of the second transistor. The circuit also includes a fifth transistor, to respond to a third scanning signal and to transmit a second signal voltage to the second transistor, and a sixth transistor, to respond to a light emitting scanning signal, and to output the current to the organic light emitting diode.

公开(公告)号：US10665165B2

公开(公告)日：2020-05-26

申请号：US15668699

申请日：2017-08-04

Applicant: SHANGHAI TIANMA AM-OLED CO., LTD.

Inventor： Yue Li ,  Gang Liu ,  Zhonglan Cai

IPC: G09G5/10 ,  G09G3/3258 ,  G09G3/3233 ,  G09G3/34

Abstract: An organic light-emitting display panel, an organic light-emitting display apparatus and a driving method of the organic light-emitting display panel are provided. The organic light-emitting display panel includes a data line and a gate line intersecting the data line, a switching signal line, a pixel driving circuit including a first voltage terminal for supplying a high-level direct current voltage, a driving transistor, a light-emitting diode and a photosensitive switch electrically connected between the first voltage terminal and the light-emitting diode; a photosensitive element disposed at a non-display region of the organic light-emitting display panel; and a control circuit including a storage module and a control module. The photosensitive element is configured to sense environment brightness and is electrically connected with the control circuit.

公开(公告)号：US10417961B2

公开(公告)日：2019-09-17

申请号：US15488576

申请日：2017-04-17

Applicant: Shanghai Tianma AM-OLED Co., Ltd. ,  Tianma Micro-Electronics Co., Ltd.

Inventor： Dongxu Xiang ,  Yue Li ,  Tong Wu ,  Renyuan Zhu ,  Gang Liu ,  Dong Qian ,  Zeyuan Chen

IPC: G09G3/3233

Abstract: An organic light-emitting display panel, a driving method, and an organic light-emitting display device are provided. The organic light-emitting display panel comprises a plurality of pixel driving circuits, wherein a pixel driving circuit includes a first scan signal terminal and a second scan signal terminal; a light-emitting signal terminal, a data signal terminal, an initialization signal terminal, a first voltage terminal, and a second voltage terminal; a driving module comprising a driving transistor and a first capacitor having two electrode plates electrically connected to a gate electrode and a first electrode of the driving transistor, respectively; an initialization module comprising a first transistor, a first electrode, and a second electrode electrically connected to a second electrode of the driving transistor; a data writing module electrically connected to the gate electrode of the driving transistor; a light-emitting control module; and an organic light-emitting element.

公开(公告)号：US10373555B2

公开(公告)日：2019-08-06

申请号：US15596390

申请日：2017-05-16

Applicant: SHANGHAI TIANMA AM-OLED CO., LTD.

Inventor： Yue Li ,  Gang Liu ,  Dongxu Xiang

IPC: G09G3/3233

Abstract: The present application discloses an organic light emitting display panel, an organic light emitting display device, and a pixel compensation method. The panel comprises data line sets; a pixel array; pixel driving circuits; and a pixel compensation circuit, configured to provide a bias current, sample an anode voltage of an organic light emitting diode, and generate a compensated data voltage based on the bias current and the anode voltage. A power module is configured to provide the bias current to the data line set, and transmit the bias current via the data line set to the organic light emitting diode. A sampling module samples the anode voltage of the organic light emitting diode via the data line set. A data voltage generation module transmits the compensated data voltage via the data line set to the pixel driving circuit based on the anode voltage and the bias current.

公开(公告)号：US10210803B2

公开(公告)日：2019-02-19

申请号：US15588112

申请日：2017-05-05

Applicant: Shanghai Tianma AM-OLED Co., Ltd. ,  Tianma Micro-Electronics Co., Ltd.

Inventor： Tong Wu ,  Zeyuan Chen ,  Yue Li ,  Dongxu Xiang ,  Renyuan Zhu ,  Gang Liu

IPC: G09G3/3233 ,  H01L27/12 ,  H01L29/786

Abstract: A pixel circuit and driving method thereof, and a display device are provided. The pixel circuit comprises a light-emitting element, a first, second, third, and fourth transistors, and a capacitor element. The first transistor is configured to time-sharingly receive a data voltage and a power supply voltage under control of a first voltage signal. The second transistor is configured to detect and compensate a threshold voltage deviation of the first transistor under control of a first scanning signal. The third transistor is configured to provide a driving current generated by the first transistor to the light-emitting element under control of a light-emitting signal. The fourth transistor is configured to transmit a reset signal to an anode of the light-emitting element under control of a second scanning signal. The capacitor element is configured to store the data voltage transmitted to the first transistor. The light-emitting element is configured to emit light.

公开(公告)号：US10152923B2

公开(公告)日：2018-12-11

申请号：US15612745

申请日：2017-06-02

Applicant: SHANGHAI TIANMA AM-OLED CO., LTD. ,  TIANMA MICRO-ELECTRONICS CO., LTD.

Inventor： Yue Li ,  Dong Qian ,  Dongxu Xiang ,  Renyuan Zhu ,  Gang Liu

IPC: G09G3/3266 ,  G09G3/3258 ,  G09G3/20

Abstract: A display panel includes: pixel units, where each pixel unit includes sub-pixels in a row direction; gate lines and data lines crossed to define sub-pixel regions, each sub-pixel region includes one sub-pixel and an organic light emitting diode (OLED) driving circuit, OLED driving circuits in a same column are connected with one data line, OLED driving circuits in a same row are connected with one gate line; and at least two sub-pixel regions adjacent in a column direction being a first region and a second region respectively, and in the first and second regions in a same group, the sub-pixel in the first region is connected with the OLED driving circuit in the second region, and the sub-pixel in the second region is connected with the OLED driving circuit in the first region.

公开(公告)号：US10056038B2

公开(公告)日：2018-08-21

申请号：US15593929

申请日：2017-05-12

Applicant: SHANGHAI TIANMA AM-OLED CO., LTD.

Inventor： Dongxu Xiang ,  Yue Li ,  Tong Wu ,  Zeyuan Chen ,  Gang Liu ,  Dong Qian

IPC: G09G3/36 ,  G09G3/3258 ,  G09G3/3266

CPC classification number: G09G3/3258 ,  G09G3/3233 ,  G09G3/3266 ,  G09G2300/0819 ,  G09G2300/0842 ,  G09G2300/0861 ,  G09G2300/0871 ,  G09G2310/0262 ,  G09G2310/08 ,  G09G2320/0233 ,  G09G2320/045

Abstract: The present disclosure discloses an organic light emitting display panel, a driving method thereof, and an organic light emitting display apparatus. The organic light emitting display panel includes a plurality of pixel driving circuits, comprising: a driving module including a driving transistor and a first capacitor; an initialization module for initializing potentials of a gate and a first electrode of the driving transistor at least under the control of a first scanning signal terminal; a data writing module for transmitting a signal of a data signal terminal to a second electrode plate of a first capacitor under the control of the first or a second scanning signal terminal; a light emitting control module for transmitting a potential signal of the first electrode of the driving transistor to the second electrode plate of the first capacitor and driving an organic light emitting diode to emit light.

公开(公告)号：US20170256204A1

公开(公告)日：2017-09-07

申请号：US15598217

申请日：2017-05-17

Applicant: SHANGHAI TIANMA AM-OLED CO., LTD. ,  TIANMA MICRO-ELECTRONICS CO., LTD.

Inventor： Dongxu XIANG ,  Yue LI ,  Dong Qian ,  Gang Liu

IPC: G09G3/3258 ,  G11C19/28

CPC classification number: G11C19/287 ,  G09G3/3266 ,  G09G3/3677 ,  G09G2300/0809 ,  G09G2310/0286 ,  G11C19/28

Abstract: The present disclosure describes a shift register unit, an organic light-emitting display panel and a driving method. The shift register unit comprises a node potential controller and an output unit. The node potential controller comprises a first output end and a second output end. The output unit is configured to output, based on a first control signal from the first output end and a second control signal from the second output end, a first level signal or a second level signal. According to the solutions provided by the application, the potential of each node in the shift register unit is stable and controllable, and contributed to the avoidance of output logic execution problem in the shift register unit caused by unstable node potential when each control signal level of the shift register unit jumps.

公开(公告)号：US20170249904A1

公开(公告)日：2017-08-31

申请号：US15596390

申请日：2017-05-16

Applicant: SHANGHAI TIANMA AM-OLED CO., LTD.

Inventor： Yue LI ,  Gang Liu ,  Dongxu Xiang

IPC: G09G3/3258 ,  G09G3/3266

CPC classification number: G09G3/3233 ,  G09G2300/0819 ,  G09G2300/0842 ,  G09G2300/0861 ,  G09G2310/08 ,  G09G2320/0233 ,  G09G2320/045

Abstract: The present application discloses an organic light emitting display panel, an organic light emitting display device, and a pixel compensation method. The panel comprises data line sets; a pixel array; pixel driving circuits; and a pixel compensation circuit, configured to provide a bias current, sample an anode voltage of an organic light emitting diode, and generate a compensated data voltage based on the bias current and the anode voltage. A power module is configured to provide the bias current to the data line set, and transmit the bias current via the data line set to the organic light emitting diode. A sampling module samples the anode voltage of the organic light emitting diode via the data line set. A data voltage generation module transmits the compensated data voltage via the data line set to the pixel driving circuit based on the anode voltage and the bias current.

公开(公告)号：US20170243539A1

公开(公告)日：2017-08-24

申请号：US15591906

申请日：2017-05-10

Applicant: SHANGHAI TIANMA AM-OLED CO., LTD.

Inventor： Yue LI ,  Dongxu Xiang ,  Gang Liu

IPC: G09G3/3233 ,  G09G3/3275 ,  G09G3/20 ,  G09G3/3266

CPC classification number: G09G3/3233 ,  G09G2300/0809 ,  G09G2310/06 ,  G09G2320/045 ,  G09G2330/12 ,  G09G2360/16

Abstract: The present application discloses a display panel and a display device. The display panel comprises a plurality of data signal lines; a plurality of scan signal lines intersecting with the plurality of data signal lines, to define a plurality of sub-pixels in an array, and each of the sub-pixels comprising a pixel driving circuit, and an external compensation circuit, comprising a power supply unit, a sampling unit and a data signal generation unit, being connected to the data signal lines, and transmitting a compensated data signal via the data signal lines to the pixel driving circuits. In the present implementation, voltage compensation is performed by the external compensation circuit on the driving transistor and the organic light emitting diode in the pixel driving circuit, to improve the driving capability of the pixel driving circuit and increases the display precision of the display panel.