公开(公告)号：US10600361B2

公开(公告)日：2020-03-24

申请号：US15353286

申请日：2016-11-16

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

Inventor： Dong Qian ,  Zeyuan Chen ,  Wenhui Zou ,  Dongxu Xiang ,  Gang Liu

IPC: G09G3/3233

Abstract: A display panel and a threshold detection method are provided. The display panel includes a plurality of data signal lines configured to transmit data signals, a plurality of scanning lines configured to transmit driving signals, a plurality of reference voltage signal lines configured to transmit reference voltage signals, and a plurality of pixels enclosed and defined by the mutually insulated data signal lines and scanning lines. A pixel driving circuit is disposed in each pixel, and each pixel driving circuit corresponds to one data signal line and one reference voltage signal line. The pixel driving circuits are arranged in a plurality of rows.

公开(公告)号：US10438536B2

公开(公告)日：2019-10-08

申请号：US15866235

申请日：2018-01-09

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

Inventor： Yana Gao ,  Dongxu Xiang ,  Renyuan Zhu ,  Yue Li ,  Zeyuan Chen ,  Zhonglan Cai

IPC: G09G3/3258 ,  H01L51/52 ,  G09G3/3233

Abstract: The present disclosure discloses an electroluminescent display panel, a display device and a method for driving the same. The electroluminescent display panel includes a plurality of pixel circuits arranged in an array, wherein the plurality of pixel circuits each includes a node initialization module and an anode reset module; wherein a connection passage is arranged between every two adjacent pixel circuits of each column of the plurality of pixel circuits; and the connection passage is configured to provide a reference signal to either an anode reset module or a node initialization module of one of the every two adjacent pixel circuits.

公开(公告)号：US20180130542A1

公开(公告)日：2018-05-10

申请号：US15864818

申请日：2018-01-08

Applicant: Shanghai Tianma AM-OLED Co.,Ltd

Inventor： Yue Li ,  Renyuan Zhu ,  Dongxu Xiang ,  Yana Gao ,  Zeyuan Chen

IPC: G11C19/28 ,  G09G5/00

CPC classification number: G11C19/28 ,  G09G3/20 ,  G09G3/3677 ,  G09G5/003 ,  G09G2310/0286 ,  G09G2330/021

Abstract: A shift register element, a method for driving the same, and a display device are disclosed. The shift register element includes: an output module configured to provide an output terminal with a signal of a first signal terminal or a second signal terminal by voltage applied to a first node and a second node; a first driver configured to control voltage of the first node by the signal of the first input terminal; a second driver configured to control voltage of the second node by the signal of the first input terminal, and a signal of a third input terminal; a first feedback and adjustment module configured to control the voltage of the first node by the signals of the output terminal and the second input terminal; and a second feedback and adjustment module configured to control the voltage of the second node by the signal of the output terminal.

公开(公告)号：US20170249903A1

公开(公告)日：2017-08-31

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: G09G3/3258 ,  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：US10535303B2

公开(公告)日：2020-01-14

申请号：US16107971

申请日：2018-08-21

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

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

IPC: G09G3/32 ,  G09G3/3233 ,  G09G3/3258

Abstract: The present application discloses an organic light emitting display panel, a driving method thereof and an organic light emitting display apparatus. The organic light emitting display panel comprises: a pixel array, comprising pixel regions in M rows and N columns; a plurality of pixel driving circuits each comprising a light emitting diode and a driving transistor for driving the light emitting diode, the light emitting diode being arranged in one of the pixel regions; and a plurality of pixel compensation circuits, each configured to provide a compensated light emitting control signal for a gate of the driving transistor to correct brightness of the light emitting diode in one of the plurality of pixel driving circuits. According to the present disclosure, the final light emitting current may be unrelated to the threshold voltage of the driving transistor, the carrier mobility and aging of the light emitting diode.

公开(公告)号：US10373557B2

公开(公告)日：2019-08-06

申请号：US15636455

申请日：2017-06-28

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

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

IPC: G09G3/3233 ,  H01L27/32 ,  G09G3/3275 ,  G09G3/3266 ,  G09G3/3208 ,  G09G3/3258 ,  H01L29/786 ,  H01L27/12 ,  G09G3/3291

Abstract: The present application discloses an organic light-emitting pixel driving circuit, a driving method and an organic light-emitting display panel. The organic light-emitting pixel driving circuit comprises: a first transistor provides an initialization signal to an anode of the organic light-emitting diode and a gate of the driving transistor; a second transistor compensates a threshold voltage of the driving transistor; a third transistor provides a data signal to the driving transistor; a fourth transistor transmits a first power supply voltage to the driving transistor; a fifth transistor controls electrical connection between the driving transistor and the organic light-emitting diode based on a signal of the second light-emission controlling signal terminal; a capacitor is used to store the data signal transmitted to the driving transistor; an organic light-emitting diode is used to emit light in response to the driving current generated by the driving transistor.

公开(公告)号：US10147353B2

公开(公告)日：2018-12-04

申请号：US15592065

申请日：2017-05-10

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

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

IPC: G09G3/3233 ,  G09G3/3291

Abstract: An organic light emitting display panel and a pixel compensation method are provided. The organic light emitting display panel includes: a pixel array including pixel regions divided into M rows and N columns; a plurality of pixel driving circuits, each includes a light emitting diode and a driving transistor for driving the light emitting diode, and the light emitting diodes are located in the pixel regions; and a plurality of pixel compensation circuits configured to sample an anode voltage of the light emitting diode are in at least one of the pixel driving circuits. A light emitting current flows through the light emitting diode, and generates a compensation signal based on the anode voltage and the light emitting current.

公开(公告)号：US20180130410A1

公开(公告)日：2018-05-10

申请号：US15865097

申请日：2018-01-08

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

Inventor： Yana Gao ,  Renyuan Zhu ,  Yue Li ,  Dongxu Xiang ,  Zeyuan Chen

IPC: G09G3/3225

CPC classification number: G09G3/3225 ,  G09G3/3233 ,  G09G2300/0426 ,  G09G2300/0819 ,  G09G2300/0842 ,  G09G2300/0861 ,  G09G2300/0866 ,  G09G2310/08 ,  G09G2320/0214 ,  G09G2320/0219 ,  G09G2320/0233 ,  G09G2320/0257 ,  G09G2320/045

Abstract: The disclosure discloses a pixel circuit, a method for driving the same, and an organic electroluminescent display panel, where the pixel circuit includes a node initialization module and a drive control module, the node initialization module includes a first switch transistor with a gate electrically connected with a first scan signal terminal, a source electrically connected with a first reference signal terminal, and a drain electrically connected with a first node; and a seventh switch transistor with a gate electrically connected with the first scan signal terminal, a source electrically connected with the second reference signal terminal, and a drain electrically connected with the second node; the drive control module includes a drive transistor with a gate electrically connected with the first node, a source electrically connected with the second node.

公开(公告)号：US20180130406A1

公开(公告)日：2018-05-10

申请号：US15862618

申请日：2018-01-04

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

Inventor： Dongxu Xiang ,  Yue Li ,  Zeyuan Chen ,  Xiangzi Kong ,  Xingyao Zhou ,  Chuanli Leng ,  Yuan Li

IPC: G09G3/3208

Abstract: The disclosure discloses an organic electroluminescent display panel, a driving method thereof and a display device, where the dimming mode is taken to drive and each frame of scanning time is divided into the display area scanning time and the front-back porch time. Where each line of pixel circuits located in the display area of the organic electroluminescent display panel are scanned during the display area scanning time; and the drive circuit is adjusted during the front-back porch time. Where the front-back porch time is less than the display area scanning time, and the front-back porch time is the common multiple of the respective clock signal cycles in the gate drive circuit of the organic electroluminescent display panel.

公开(公告)号：US10692424B2

公开(公告)日：2020-06-23

申请号：US15862618

申请日：2018-01-04

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

Inventor： Dongxu Xiang ,  Yue Li ,  Zeyuan Chen ,  Xiangzi Kong ,  Xingyao Zhou ,  Chuanli Leng ,  Yuan Li

IPC: G09G3/3208

Abstract: The disclosure discloses an organic electroluminescent display panel, a driving method thereof and a display device, where the dimming mode is taken to drive and each frame of scanning time is divided into the display area scanning time and the front-back porch time. Where each line of pixel circuits located in the display area of the organic electroluminescent display panel are scanned during the display area scanning time; and the drive circuit is adjusted during the front-back porch time. Where the front-back porch time is less than the display area scanning time, and the front-back porch time is the common multiple of the respective clock signal cycles in the gate drive circuit of the organic electroluminescent display panel.