Patents by Inventor Dong Qian

Dong Qian 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).

  • Patent number: 9646536
    Abstract: A pixel circuit for an organic light emitting display includes first, second, third, fourth, fifth, and sixth MOS transistors, a first capacitor, and an organic light emitting diode. The gate electrode of the first MOS transistor receives a first scanning signal. The first electrode of the first MOS transistor receives a data signal. The gate electrode of the third MOS transistor receives a control signal. The gate electrode of the fourth MOS transistor receives the first scanning signal. The gate electrode of the fifth MOS transistor receives the control signal. The first electrode of the fifth MOS transistor receives a reference voltage. The gate electrode of the sixth MOS transistor receives a second scanning signal. The first electrode of the sixth MOS transistor receives the reference voltage.
    Type: Grant
    Filed: August 29, 2016
    Date of Patent: May 9, 2017
    Assignee: SHANGHAI TIANMA MICRO-ELECTRONICS CO., LTD.
    Inventors: Dong Qian, Gang Liu, Chen Liu
  • Patent number: 9633603
    Abstract: A pixel compensating circuit includes a first transistor, a second transistor, a third transistor, a fourth transistor, a fifth transistor, a driving transistor, a first capacitor, and an organic light emitting diode element. The first transistor controls transmission of a data signal to a first electrode plate of the first capacitor. The second transistor controls transmission of a reference voltage signal to the first electrode plate of the first capacitor. The driving transistor determines an amount of a driving current. The third transistor controls connection and disconnection between the gate electrode and a drain electrode of the driving transistor. The fourth transistor transmits the driving current from the driving transistor to the organic light emitting diode element. The fifth transistor controls transmission of a supply voltage to the source electrode of the driving transistor; and the organic light emitting diode element emits light in response to the driving current.
    Type: Grant
    Filed: June 27, 2016
    Date of Patent: April 25, 2017
    Assignees: SHANGHAI TIANMA AM-OLED CO., LTD., TIANMA MICRO-ELECTRONICS CO., LTD.
    Inventors: Gang Liu, Zhiliang Wang, Dong Qian, Liyuan Luo
  • Publication number: 20170110054
    Abstract: A pixel circuit, a driving method of a pixel circuit and an organic light-emitting display device are provided.
    Type: Application
    Filed: January 26, 2016
    Publication date: April 20, 2017
    Inventors: KUO SUN, WANG LI, DONG QIAN
  • Publication number: 20170103701
    Abstract: An organic light emitting diode pixel driving circuit includes a pixel capacitor for storing a received voltage and coupling a change valve of the voltage at a first electrode thereof to a second electrode thereof; a first transistor for providing a reference voltage to the first electrode of the pixel capacitor under the control of a first light emitting signal; a third transistor for transmitting a data voltage to second electrode of the pixel capacitor under the control of the first scanning signal; and a fourth transistor; thereby overcoming the uneven display of the entire image, which is caused by the drift of the threshold voltage of the driving transistor and the different driving current driving the different OLEDs to emit light when the different OLEDs receive the same image data signal, the different driving current is caused by the difference the high-level power supply voltages.
    Type: Application
    Filed: May 19, 2016
    Publication date: April 13, 2017
    Inventors: Minyu Zhu, Dong Qian
  • Patent number: 9614179
    Abstract: The invention discloses a display panel, a method of manufacturing the same and a display device so as to simplify a process of transmitting an electrical signal between a first substrate and a second substrate of the display panel at a lower cost. The display panel includes a first substrate and a second substrate disposed opposite to each other. The first substrate has a concave groove surrounded by a convex section and facing the second substrate. The display panel also includes an electrode layer on the surface of the groove and having at least one first conductive section extending outward from inside of the concave groove to the top end face of the convex section; and at least one second conductive section on the second substrate and electrically connected with the respective first conductive section.
    Type: Grant
    Filed: January 12, 2015
    Date of Patent: April 4, 2017
    Assignees: SHANGHAI TIANMA AM-OLED CO., LTD., TIANMA MICRO-ELECTRONICS CO., LTD.
    Inventors: Zhiyong Xiong, Dong Qian
  • Patent number: 9605336
    Abstract: A mask and a method of making the mask are disclosed. The mask includes a transition region including at least one first region having a first thickness, and an active region having another thickness, where the thickness of the active region is greater than the first thickness. The method of making the mask includes forming a plurality of patterns in a mask body, the patterns being formed in regions of the mask body corresponding with the active region and the transition region of the mask.
    Type: Grant
    Filed: October 15, 2014
    Date of Patent: March 28, 2017
    Assignees: SHANGHAI TIANMA AM-OLED CO., LTD., TIANMA MICRO-ELECTRONICS CO., LTD.
    Inventors: Zhiyong Xiong, Dong Qian, Yunyan Wei
  • Patent number: 9607545
    Abstract: The present invention discloses a pixel compensation circuit and method for an organic light emitting display. The circuit comprises a first transistor, a second transistor, a third transistor, a fourth transistor, a driving transistor, a capacitor, and an organic light emitting element. The first transistor transmits a data signal to a first plate of the capacitor; the second transistor applies a reference voltage to the first plate of the capacitor; the driving transistor determines a magnitude of a driving current; the third transistor establishes a connection between the gate electrode and the drain electrode of the driving transistor; the fourth transistor passes the driving current from the driving transistor to the organic light emitting element; and the organic light emitting element emits light in response to the driving current.
    Type: Grant
    Filed: August 18, 2014
    Date of Patent: March 28, 2017
    Assignees: SHANGHAI TIANMA MICRO-ELECTRONICS CO., LTD., TIANMA MICRO-ELECTRONICS CO., LTD.
    Inventors: Dong Qian, Hanyu Gu, Tong Zhang
  • Patent number: 9601057
    Abstract: A pixel circuit, an organic electroluminescent display panel and a display device are provided. The pixel circuit includes a light emitting element, a first capacitor, a reset control module, a drive control module, a compensation control module, and a light emission control module. In a reset phase, the reset control module writes a reset signal at a reset signal end into a second end of the first capacitor. In a compensation phase, the reset control module writes a data signal at a data signal end into a first end of the first capacitor, and the drive control module charges the first capacitor through the compensation control module. In a light emission phase, both the light emission control module and the first capacitor enable the drive control module to drive the light emitting element with a stable current for emission of light.
    Type: Grant
    Filed: May 27, 2016
    Date of Patent: March 21, 2017
    Assignees: SHANGHAI TIANMA AM-OLED CO., LTD., TIANMA MICRO-ELECTRONICS CO., LTD.
    Inventors: Gang Liu, Chen Liu, Dan Chen, Dong Qian
  • Publication number: 20170069262
    Abstract: The description provides an organic light emitting display panel and a driving method thereof, characterized in that the organic light emitting display panel is divided into a display area and a non-display area, and the non-display area surrounds the display area; the display area includes a plurality of rows of pixel units, and each row of pixel units include a plurality of pixel circuits; a plurality of driving circuit units located in the non-display area; and any one of the driving circuit units is electrically connected to more than two rows of the pixel units simultaneously. Using the organic light emitting display panel and the driving method thereof provided by at least one embodiment of the invention can be more advantageous to narrow borders on the basis of ensuring resolution and avoiding abnormal display of images.
    Type: Application
    Filed: November 21, 2016
    Publication date: March 9, 2017
    Inventors: Tong WU, Wenhui ZOU, Dong QIAN, Yue LI, Gang LIU, Dongxu XIANG, Renyuan ZHU
  • Patent number: 9588363
    Abstract: The present invention discloses a liquid crystal display device and a driving method thereof, and the device comprises a plurality of data lines; a plurality of gate lines; a plurality of common lines; at least one dummy gate line; a plurality of gate line trigger circuits; and a plurality of common line trigger circuits; wherein, one end of the last gate line is connected with the last gate line trigger circuit; one end of each of remaining gate lines are connected with a gate line trigger circuit corresponding to said each of remaining gate lines, and the other end of said each of the remaining gate lines are connected with the succeeding gate line trigger circuit; the first common line trigger circuit is connected with one dummy gate line, and each of remaining common line trigger circuits is connected with one or more preceding gate line trigger circuits. Latency to the charging time is effectively reduced with the liquid crystal display device of this invention.
    Type: Grant
    Filed: March 31, 2016
    Date of Patent: March 7, 2017
    Assignee: SHANGHAI TIANMA MICRO-ELECTRONICS CO., LTD.
    Inventors: Bojia Lv, Dong Qian, Xiangzi Kong, Hanyu Gu
  • Publication number: 20170061891
    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.
    Type: Application
    Filed: November 16, 2016
    Publication date: March 2, 2017
    Inventors: Dong QIAN, Zeyuan CHEN, Wenhui ZOU, Dongxu XIANG, Gang LIU
  • Publication number: 20170061871
    Abstract: A display panel and a display panel compensation method are provided. The display panel comprises at least one pixel compensation circuit including a voltage adjustment module, a conversion module, a first memory module, and a comparison module; and a plurality of pixel driving circuits each including a data input module, a driving module, a second memory module, a sensing module, and a light-emitting element. The pixel compensation circuit compensates a threshold voltage shift of the pixel driving circuit. The voltage adjustment module has an input terminal connected to a first power supply, and an output terminal connected to an input terminal of the data input module. The data input module has an output terminal connected to a controlling terminal of the driving module, and a controlling terminal connected to a first scanning signal line. The driving module has an output terminal connected to an input terminal of the sensing module.
    Type: Application
    Filed: November 10, 2016
    Publication date: March 2, 2017
    Inventors: DONGXU XIANG, YUE LI, DONG QIAN, RENYUAN ZHU, TONG WU, GANG LIU
  • Patent number: 9584127
    Abstract: An inverter includes first, second, third, fourth, and fifth transistors, and first and second capacitors. The transistors and capacitors are connected in such way that the reverse conduction of the second transistor is prevented through controlling the gate electrode of the second transistor and maintaining the electrical potential at the gate electrode of the fifth transistor by the second capacitor. The electrical potential at the gate electrode of the fifth transistor is maintained stable when a first clock signal changes from high to low (when the first to fifth transistors are NMOS transistors) or from low to high (when the first to fifth transistors are PMOS transistors), so that the output signal of the inverter may not be affected by a change of the first clock signal, thus enabling the inverter to generate a stable output signal and a display panel comprising the inverter to obtain a better display effect.
    Type: Grant
    Filed: December 30, 2014
    Date of Patent: February 28, 2017
    Assignees: SHANGHAI TIANMA AM-OLED CO., LTD., 03;TIANMA MICRO-ELECTRONICS CO., LTD.
    Inventors: Dong Qian, Yue Li, Tong Zhang, Zhiliang Wang, Liyuan Luo
  • Publication number: 20170011687
    Abstract: A device and method for applying a data voltage signal, a display panel, and a display device. The device for applying the data voltage signal includes: a voltage signal detection module configured to detect an image signal inputted to a display assembly; and a threshold compensation signal outputting module configured to process the inputted image signal and apply the processed image signal to a gate electrode of a driving transistor so that the driving transistor is turned on before a threshold compensation for the driving transistor is conducted; where, the processed image signal is obtained by subtracting a preset voltage signal from the inputted image signal.
    Type: Application
    Filed: December 10, 2015
    Publication date: January 12, 2017
    Inventors: Yue Li, Tong Zhang, Dong Qian, Yi Du
  • Publication number: 20170004889
    Abstract: The present disclosure provides a shift register and a method for driving the shift register. The shift register includes a first input module, a second input module and an output module. The first input module includes a first transistor and a second transistor, both being connected with a first input terminal, a fourth input terminal and a fifth input terminal. The second input module is connected with a second input terminal, a third input terminal and a fourth input terminal. The second input terminal is electrically connected with the first input module at a first node. The output module being connected with a fifth input terminal, a sixth input terminal and a first output terminal, the output module being electrically connected with the first input module at the first node and the second node, and the output module being electrically connected with the second input module at the first node.
    Type: Application
    Filed: May 20, 2016
    Publication date: January 5, 2017
    Inventors: Yuan Li, Dong Qian
  • Publication number: 20170004801
    Abstract: The present disclosure provides a shift register and a driving method thereof The shift register includes an input control module, a first output module, a second output module, a stabilizing module. The input control module and the stabilizing module control activation of the first output module, for outputting a second level signal from the second level signal terminal to the signal output terminal, or control activation of the second output module, for outputting a second clock signal from the second clock terminal to the signal output terminal, so as to make a secondary shift register to be operated normally. The shift register in accordance with the present disclosure has an excellent stability, a better transmission and a good performance, thereby solving problems of poor stability and unstable operation of the shift registers in the prior art.
    Type: Application
    Filed: May 20, 2016
    Publication date: January 5, 2017
    Inventors: Yuan Li, Dong Qian
  • Publication number: 20160372038
    Abstract: A pixel circuit for an organic light emitting display includes first, second, third, fourth, fifth, and sixth MOS transistors, a first capacitor, and an organic light emitting diode. The gate electrode of the first MOS transistor receives a first scanning signal. The first electrode of the first MOS transistor receives a data signal. The gate electrode of the third MOS transistor receives a control signal. The gate electrode of the fourth MOS transistor receives the first scanning signal. The gate electrode of the fifth MOS transistor receives the control signal. The first electrode of the fifth MOS transistor receives a reference voltage. The gate electrode of the sixth MOS transistor receives a second scanning signal. The first electrode of the sixth MOS transistor receives the reference voltage.
    Type: Application
    Filed: August 29, 2016
    Publication date: December 22, 2016
    Inventors: Dong Qian, Gang Liu, Chen Liu
  • Publication number: 20160357792
    Abstract: Methods, systems, and computer program products for decompressing data are described. An ordinal column number of columnar data to be accessed is obtained, the ordinal column number identifying a location of the columnar data in a corresponding uncompressed row, the columnar data being stored in a first data structure. A breakpoint value in a breakpoint field of the at least partially compressed row is determined, the breakpoint value indicating a location of an end of a common prefix in the corresponding uncompressed row, the common prefix being stored in a second data structure. The ordinal column number of the columnar data to be accessed and a column number indicated by the breakpoint value are compared, the comparison identifying one or more locations of the columnar data to be accessed.
    Type: Application
    Filed: August 22, 2016
    Publication date: December 8, 2016
    Inventors: Xu-dong Qian, Leon Xiong
  • Patent number: 9501976
    Abstract: A pixel circuit for an organic light emitting display includes first, second, third, fourth, fifth, and sixth MOS transistors, a first capacitor, and an organic light emitting diode. The gate electrode of the first MOS transistor receives a first scanning signal. A first electrode of the first MOS transistor receives a data signal. The gate electrode of the third MOS transistor receives a third control signal. The gate electrode of the fourth MOS transistor receives the first scanning signal. The gate electrode of the fifth MOS transistor receives a first control signal. A first electrode of the fifth MOS transistor receives a reference voltage. The gate electrode of the sixth MOS transistor receives a second scanning signal. The first electrode of the sixth MOS transistor receives the reference voltage.
    Type: Grant
    Filed: January 6, 2016
    Date of Patent: November 22, 2016
    Assignee: SHANGHAI TIANMA MICRO-ELECTRONICS CO., LTD.
    Inventors: Dong Qian, Tong Wu
  • Publication number: 20160307508
    Abstract: A pixel compensating circuit includes a first transistor, a second transistor, a third transistor, a fourth transistor, a fifth transistor, a driving transistor, a first capacitor, and an organic light emitting diode element. The first transistor controls transmission of a data signal to a first electrode plate of the first capacitor. The second transistor controls transmission of a reference voltage signal to the first electrode plate of the first capacitor. The driving transistor determines an amount of a driving current. The third transistor controls connection and disconnection between the gate electrode and a drain electrode of the driving transistor. The fourth transistor transmits the driving current from the driving transistor to the organic light emitting diode element. The fifth transistor controls transmission of a supply voltage to the source electrode of the driving transistor; and the organic light emitting diode element emits light in response to the driving current.
    Type: Application
    Filed: June 27, 2016
    Publication date: October 20, 2016
    Inventors: Gang LIU, Zhiliang Wang, Dong Qian, Liyuan Luo