Patents by Inventor DONGXU XIANG

DONGXU XIANG has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Publication number: 20190304560
    Abstract: The present disclosure provides a shift register, a driving circuit, a display device and a driving method for improving the accuracy of an output signal. The first input unit of the shift register is configured to provide a signal at a first fixed potential terminal to a first node, a signal at the input signal terminal to the first node and the signal at the input signal terminal to the first node. A second input unit of the shift register is configured to provide the signal at the input signal terminal to the second node and a signal at the first fixed potential terminal to the second node. An output unit of the shift register is configured to provide a signal at the first clock signal terminal to an output signal terminal of the shift register and a signal at a second fixed potential terminal to the output signal terminal.
    Type: Application
    Filed: January 10, 2019
    Publication date: October 3, 2019
    Inventors: Dongxu XIANG, Yue LI, Renyuan ZHU, Yana GAO, Xingyao ZHOU, Zhonglan CAI, Juan ZHU, Yilin XU, Gaojun HUANG
  • Publication number: 20190304382
    Abstract: The present disclosure provides an emission control circuit including a first processing module, a second processing module, a third processing module and an output module. The first processing module generates a first signal in response to a first control signal, a second control signal and a second signal. The second processing module includes a first transistor having a control electrode electrically connected to the first node, a first electrode electrically connected to the second node and a second electrode electrically connected to the first control signal terminal, and a second transistor having a control electrode electrically connected to the first control signal terminal, a first electrode electrically connected to the second node and a second electrode electrically connected to the first control signal terminal. The third processing module generates a third signal and a fourth signal in response to the second control signal, the first signal and the second signal.
    Type: Application
    Filed: August 14, 2018
    Publication date: October 3, 2019
    Inventors: Yana GAO, Xing Yao ZHOU, Yue LI, Renyuan ZHU, Dongxu XIANG, Gaojun HUANG, Yilin XU, Zhonglan CAI, Juan ZHU
  • Publication number: 20190304358
    Abstract: The present disclosure provides a shift register, a driving method of the shift register, an emission driving circuit, and a display device. The shift register includes a first node control module, a second node control module and an output control module. A first low level signal VGL1 provides low level at a first node, and a high level signal provides high level at a second node. The output control module includes a transistor for outputting low level, so that an output terminal outputs a third low level signal. The first low level signal VGL1, the third low level signal VGL3 and a threshold voltage Vth1 of the transistor in the output control module satisfy a relation of VGL3>VGL1+|Vth1|, such that in a phase following the output terminal outputting the high level signal, the output terminal completely outputs the third low level signal.
    Type: Application
    Filed: September 14, 2018
    Publication date: October 3, 2019
    Inventors: Yue LI, Renyuan ZHU, Dongxu XIANG, Yana GAO, Xingyao ZHOU, Gaojun HUANG, Yilin XU, Zhonglan CAI, Juan ZHU
  • Patent number: 10431153
    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.
    Type: Grant
    Filed: January 8, 2018
    Date of Patent: October 1, 2019
    Assignee: SHANGHAI TIANMA AM-OLED CO., LTD.
    Inventors: Yana Gao, Renyuan Zhu, Yue Li, Dongxu Xiang, Zeyuan Chen
  • Publication number: 20190295453
    Abstract: Provided is a shift register, including a first node control module for controlling a level state of a first node based on an input signal, a first clock signal and a second clock signal. The shift register includes a second node control module for controlling a level state of a second node based on the input signal, the first clock signal, the second clock signal and the level state of the first node. In a phase when the input signal is at high level and the first clock signal is at low level, a third node for controlling a level at the second node is provided with high level, such that in a phase when the input signal is at high level and the second clock signal is at low level, the level at the third node is pulled down so as to provide low level at the second node.
    Type: Application
    Filed: October 4, 2018
    Publication date: September 26, 2019
    Inventors: Yue LI, Renyuan ZHU, Dongxu XIANG, Yana GAO, Xingyao ZHOU, Gaojun HUANG, Yilin XU, Zhonglan CAI, Juan ZHU
  • Publication number: 20190295505
    Abstract: The present disclosure provides an emission controller, a driving method thereof, and a display device. The emission controller includes a first processing module, a second processing module, a third processing module, an output module and a shift control module. The first processing module generates a first signal in response to a first control signal, a second control signal and a second signal. The second processing module generates a second signal in response to the first control signal and the first signal. The third processing module generates third and fourth signals in response to the second control signal, the second and first signals. The output module provides emission control signal in response the first and fourth signal. The shift control module provides a shift control signal in response to the first and fourth signal, or provides a shift control signal in response to the first and third signal.
    Type: Application
    Filed: September 21, 2018
    Publication date: September 26, 2019
    Inventors: Yana GAO, Xingyao ZHOU, Yue LI, Dongxu XIANG, Renyuan ZHU, Zhonglan CAI, Juan ZHU, Gaojun HUANG, Yilin XU
  • Patent number: 10417961
    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.
    Type: Grant
    Filed: April 17, 2017
    Date of Patent: September 17, 2019
    Assignees: Shanghai Tianma AM-OLED Co., Ltd., Tianma Micro-Electronics Co., Ltd.
    Inventors: Dongxu Xiang, Yue Li, Tong Wu, Renyuan Zhu, Gang Liu, Dong Qian, Zeyuan Chen
  • Patent number: 10417960
    Abstract: The disclosure discloses an organic electroluminescent display panel and a display panel, where initialization transistor and the control transistor are connected by a second power source signal line, and if the initialization transistor is turned on by first scan signal line, and if the control transistor is turned on by light emitting control line, then different electrical signal will be loaded on the second power source signal line to thereby reset the gate of a drive transistor in an initialization stage, and to load power source voltage to the source of the drive transistor for light emission and displaying, in a light emitting stage.
    Type: Grant
    Filed: January 8, 2018
    Date of Patent: September 17, 2019
    Assignee: SHANGHAI TIANMA AM-OLED CO., LTD.
    Inventors: Dongxu Xiang, Yue Li, Renyuan Zhu, Yana Gao
  • Patent number: 10417969
    Abstract: An organic light emitting (OLED) display panel, a driving method thereof, and a display apparatus are provided. The OLED display panel comprises a display region including N number of pixel rows and a non-display region including a light-emitting driver circuit and a scanning driver circuit. The display region includes a first display region including N1 number of pixel rows and a second display region including N2 number of pixel rows, where N1, N2, and N are positive integers, and N1+N2=N. A pixel row in the second display region has a smaller number of pixels than a pixel row in the first display region. The light-emitting driver circuit is configured to, in scanning time S for each frame, supply a light-emitting control signal having n number of light-emitting cycles to each pixel row in the display region, where n is a positive integer.
    Type: Grant
    Filed: January 9, 2018
    Date of Patent: September 17, 2019
    Assignee: Shanghai Tianma Micro-Electronics Co., Ltd.
    Inventors: Xingyao Zhou, Chuanli Leng, Yuan Li, Yana Gao, Yue Li, Renyuan Zhu, Dongxu Xiang
  • Patent number: 10403194
    Abstract: A display panel includes a display area, the display area including a plurality of scan lines; and a non-display area, the non-display area including a plurality of gate driving circuits and at least one load compensating unit; wherein at least two of the plurality of scan lines have different lengths; each gate driving circuit is respectively connected with one scan line; each load compensating unit corresponds to one gate driving circuit to compensate a load of one gate driving circuit, and the larger a length of the scan line connected with the gate driving circuit, the smaller a load added by a corresponding load compensating unit. In the display panel provided by the present disclosure, through arranging the load compensating unit, the phenomenon of the non-uniform brightness of the display panel can be improved, and display quality of the display panel can be improved.
    Type: Grant
    Filed: October 18, 2017
    Date of Patent: September 3, 2019
    Assignee: SHANGHAI TIANMA AM-OLED CO., LTD.
    Inventors: Chunyang Li, Dongxu Xiang, Yue Li
  • Patent number: 10403195
    Abstract: Embodiments of the disclosure provide a shift register, a method for driving the same, and a display device, and the shift register includes: a first input module and a second input module, connected respectively with an input signal terminal and a first clock signal terminal; a first control module and a second control module connected with a second clock signal terminal; a third control module connected with a first reference signal terminal; and an output module and a plurality of capacitors, connected respectively with the first reference signal terminal, the second reference signal terminal, and the output signal terminal.
    Type: Grant
    Filed: October 23, 2017
    Date of Patent: September 3, 2019
    Assignee: SHANGHAI TIANMA AM-OLED CO., LTD.
    Inventors: Renyuan Zhu, Yue Li, Yana Gao, Dongxu Xiang, Zeyuan Chen, Bozhang Sun
  • Patent number: 10373557
    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.
    Type: Grant
    Filed: June 28, 2017
    Date of Patent: August 6, 2019
    Assignee: SHANGHAI TIANMA AM-OLED CO., LTD.
    Inventors: Renyuan Zhu, Yue Li, Tong Wu, Dongxu Xiang, Zeyuan Chen
  • Patent number: 10373555
    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.
    Type: Grant
    Filed: May 16, 2017
    Date of Patent: August 6, 2019
    Assignee: SHANGHAI TIANMA AM-OLED CO., LTD.
    Inventors: Yue Li, Gang Liu, Dongxu Xiang
  • Publication number: 20190237017
    Abstract: A pixel driving circuit, a driving method, a display panel, and a display device are provided. The pixel driving circuit comprises: data writing module, in response to a scan signal transmitting a data signal; mirror driving module, receiving the data signal and generating a driving current, and including a first transistor and a second transistor; and a light-emitting element, in response to the driving current emitting lights. A gate electrode of the first transistor and a gate electrode of the second transistor are both electrically connected to a first joint. A first electrode of the first transistor is electrically connected to a first electrode of the second transistor. A threshold voltage of the first transistor is equal to a threshold voltage of the second transistor. An aspect ratio of the first transistor is A and an aspect ratio of the second transistor is B, and A<B?20A.
    Type: Application
    Filed: April 24, 2018
    Publication date: August 1, 2019
    Inventors: Dongxu XIANG, Renyuan ZHU, Yue LI, Yana GAO, Zhonglan CAI
  • Patent number: 10325555
    Abstract: An organic light emitting pixel compensation circuit, an organic light emitting display panel, and a driving method are provided. The organic light emitting pixel compensation circuit includes an external compensation module, which has a data line, a reference voltage line, a reset control line, a first detection control line, a second detection control line, a first input/output terminal, a second input/output terminal, a reset unit, a threshold voltage detection unit, a deterioration voltage detection unit, a data processing unit, and an adder unit. The deterioration compensation for a light emitting element is achieved by detecting and processing an anode voltage at the second input/output terminal to obtain a compensated voltage, and feeding the compensated data voltage back to a gate of a driving transistor via the data line.
    Type: Grant
    Filed: March 29, 2017
    Date of Patent: June 18, 2019
    Assignees: SHANGHAI TIANMA AM-OLED CO., LTD., TIANMA MICRO-ELECTORNICS CO., LTD.
    Inventors: Tong Wu, Yue Li, Dongxu Xiang, Gang Liu
  • Patent number: 10297202
    Abstract: An organic light-emitting display panel, a driving method thereof, and an organic light-emitting display device are provided. The organic light-emitting display panel includes a pixel driving circuit comprising an organic light-emitting element, a driving module, an initialization module, a data write-in module, and a light-emitting control module. The driving module includes a control end, a first end and a second end. The light-emitting control module is configured to transmit a signal to the second end of the driving module. The driving module is configured to drive the organic light-emitting element to emit light based on the signal transmitted by the light-emitting control module. The initialization module is configured to initialize a voltage level of the control end and a voltage level of the first end of the driving module. The data write-in module is configured to write a data signal into the control end of the driving module.
    Type: Grant
    Filed: May 5, 2017
    Date of Patent: May 21, 2019
    Assignees: Shanghai Tianma AM-OLED Co., Ltd., Tianma Micro-Electronics Co., Ltd.
    Inventors: Dongxu Xiang, Yue Li, Tong Wu, Dong Qian, Gang Liu, Zeyuan Chen
  • Patent number: 10290694
    Abstract: Disclosed are an organic light-emitting display panel and an organic light-emitting display device. The organic light-emitting display panel includes a display area, a middle area of the display panel, an array substrate, pixels arranged in an array, and first signal lines and second signal lines for providing the pixels with signals and extending in a first direction, in the display area of the array substrate, a first quantity of pixels corresponding to a first signal line is less than a second quantity of pixels corresponding to a second signal line, and first transparent conductive lines are electrically connected with the first signal lines in the middle area.
    Type: Grant
    Filed: March 28, 2018
    Date of Patent: May 14, 2019
    Assignee: SHANGHAI TIANMA AM-OLED CO., LTD.
    Inventors: Dongxu Xiang, Renyuan Zhu, Yue Li, Yana Gao, Zhonglan Cai
  • Patent number: 10276094
    Abstract: A pixel driving circuit, a driving method and an organic light-emitting display panel are provided. The pixel driving circuit includes: a first transistor, a second transistor, a third transistor, a fourth transistor and a fifth transistor, a sixth transistor, a seventh transistor and an eighth transistors, and a capacitor. A first node is present between the fourth transistor and the fifth transistor. The seventh transistor is coupled between a reference voltage line and the first node, and the eighth transistor is coupled between the reference voltage line and an anode of the light-emitting element.
    Type: Grant
    Filed: March 20, 2017
    Date of Patent: April 30, 2019
    Assignees: Shanghai Tianma AM-OLEO Co., Ltd., TIANMA MICRO-ELECTRONICS CO., LTD.
    Inventors: Dongxu Xiang, Yue Li, Dong Qian, Gang Liu, Renyuan Zhu, Tong Wu, Zeyuan Chen
  • Patent number: 10276254
    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.
    Type: Grant
    Filed: May 17, 2017
    Date of Patent: April 30, 2019
    Assignees: SHANGHAI TIANMA AM-OLED CO., LTD., TIANMA MICRO-ELECTRONICS CO., LTD.
    Inventors: Dongxu Xiang, Yue Li, Dong Qian, Gang Liu
  • Patent number: 10269300
    Abstract: An organic light-emitting display panel, driving method thereof, and an organic light-emitting display device are provided. The organic light-emitting display panel comprises a plurality of pixel driving circuits including a first, a second and a third pixel driving circuits along a row direction. The first and the second pixel driving circuits share a same reference voltage signal line. The second and the third pixel driving circuits share a same data voltage signal line. A plurality of reference voltage signal lines is connected to the plurality of pixel driving circuits. A plurality of data voltage signal lines is connected to the plurality of pixel driving circuits. A first control signal line is connected to the first and third pixel driving circuits. A second control signal line is connected to the second pixel driving circuit. A light-emitting control signal line is connected to the first, second, and third pixel driving circuits.
    Type: Grant
    Filed: April 13, 2017
    Date of Patent: April 23, 2019
    Assignee: SHANGHAI TIANMA AM-OLED CO., LTD.
    Inventors: Dongxu Xiang, Yue Li, Dong Qian, Gang Liu