Patents by Inventor Baixiang Han

Baixiang Han 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: 20210287581
    Abstract: The present invention provides a method of driving a display panel and a driving device. The present invention determines sub-pixels shared by sub-pixel rendering technology through comparing differences of the color components, and the sub-pixels shared by the display image are not fixed. Since the sub-pixels with the smallest absolute value of the color component difference are selected for sharing, a contrast of an edge region of an image is improved, and distortion of an edge region of an image is reduced.
    Type: Application
    Filed: November 11, 2019
    Publication date: September 16, 2021
    Applicant: SHENZHEN CHINA STAR OPTOELECTRONICS SEMICONDUCTOR DISPLAY TECHNOLOGY CO., LTD.
    Inventors: Liuqi ZHANG, Baixiang HAN
  • Publication number: 20210280134
    Abstract: A pixel driving circuit including a driving thin-film transistor; a regulating capacitor, wherein a first terminal of the regulating capacitor is connected to a control terminal of the driving thin-film transistor, and a second terminal of the regulating capacitor is connected to a first terminal of the driving thin-film transistor; a first capacitor, wherein a first terminal of the first capacitor is connected to the control terminal of the driving thin-film transistor, and a second terminal of the first capacitor is connected to a second terminal of the driving thin-film transistor; and a light-emitting device, wherein a first terminal of the light-emitting device is connected to the second terminal of the driving thin-film transistor, and a second terminal of the light-emitting device is grounded.
    Type: Application
    Filed: October 24, 2019
    Publication date: September 9, 2021
    Applicant: Shenzhen China Star Optoelectronics Semiconductor Display Technology Co., Ltd.
    Inventors: Suixin ZHAO, Baixiang HAN
  • Patent number: 11062787
    Abstract: A gate driving unit and a gate driving method are provided. The gate driving unit includes an input unit, a driving unit, a pull-down unit, and a pull-down control unit. The pull-down unit has an output terminal of a current stage cascaded signal and an output terminal; in the pull-up phase, the output terminal of the current stage cascaded signal and the output terminal output signal, a voltage of the output terminal of the current stage cascaded signal is pulled down to a first reference low electric level, and a voltage of the output terminal is pulled down to a second reference low electric level.
    Type: Grant
    Filed: November 14, 2019
    Date of Patent: July 13, 2021
    Assignee: Shenzhen China Star Optoelectronics Semiconductor Display Technology Co., Ltd.
    Inventors: Shengdong Zhang, Congwei Liao, Baixiang Han, Yan Xue, Liuqi Zhang
  • Publication number: 20210082350
    Abstract: A top-emitting AMOLED panel includes a pixel circuit for each of multiple pixels. The circuit includes a first TFT connected to first, second, and third nodes; a second TFT connected to a scan signal, the first node and a data signal; a third TFT connected to the scan signal, the second node, and a reference voltage; a fourth TFT connected to the scan signal, the third node, and a high voltage power source; a first capacitor connected to the first node and the second node; a second capacitor connected to the third node and the reference voltage; and an OLED connected to the second node and a low voltage power source. The voltages supplied from the high voltage power source and the low voltage power source to the pixel are variable as functions of the location of the pixel on the panel, such that a voltage difference therebetween keeps unchanged.
    Type: Application
    Filed: November 30, 2020
    Publication date: March 18, 2021
    Inventor: Baixiang Han
  • Publication number: 20210057034
    Abstract: A gate driving unit and a gate driving method are provided. The gate driving unit includes an input unit, a driving unit, a pull-down unit, and a pull-down control unit. The pull-down unit has an output terminal of a current stage cascaded signal and an output terminal; in the pull-up phase, the output terminal of the current stage cascaded signal and the output terminal output signal, a voltage of the output terminal of the current stage cascaded signal is pulled down to a first reference low electric level, and a voltage of the output terminal is pulled down to a second reference low electric level.
    Type: Application
    Filed: November 14, 2019
    Publication date: February 25, 2021
    Inventors: Shengdong ZHANG, Congwei LIAO, Baixiang HAN, Yan XUE, Liuqi ZHANG
  • Patent number: 10891898
    Abstract: The invention discloses a pixel circuit for top-emitting AMOLED panel and driving method thereof. The pixel circuit comprises: first TFT (T1), connected to first node(G), second node(S) and third node(D); second TFT(T2), connected to scan signal(Scan), first node(G) and data signal(Data1); third TFT(T3), connected to scan signal(Scan), second node(S) and reference voltage(Ref); fourth TFT(T4), connected to scan signal(Scan), third node(D) and high voltage power source(Data2); first capacitor(Cst), connected to first node(G) and second node(S); second capacitor(C), connected respectively to third node(D) and reference voltage(Ref); OLED, connected to second node(S) and low voltage power source(VSS); the voltage difference between high voltage power source(Data2) and low voltage power source(VSS) maintaining unchanged. The invention also provides a corresponding driving method. The invention can effectively relieve the IR voltage drop caused by increased impendence of the transparent cathode.
    Type: Grant
    Filed: November 15, 2017
    Date of Patent: January 12, 2021
    Assignee: SHENZHEN CHINA STAR OPTOELECTRONICS SEMICONDUCTOR DISPLAY TECHNOLOGY CO., LTD.
    Inventor: Baixiang Han
  • Publication number: 20200357843
    Abstract: The present invention provides a foldable display panel, the foldable display panel includes a first display region, a second display region, and a folding region. The first display region includes a plurality of first pixel units. The second display region includes a plurality of second pixel units corresponding to the plurality of first pixel units. The second display region covers the first display region along the folding region when the folding region is deformed, and each of the plurality of second pixel units is located above corresponding each of the plurality of first pixel units.
    Type: Application
    Filed: October 31, 2019
    Publication date: November 12, 2020
    Inventor: Baixiang HAN
  • Patent number: 10720109
    Abstract: An organic light emitting diode (OLED) display device includes a plurality of scan lines, a plurality of data lines, and a driver chip. The scan lines are configured to receive scan signals. The data lines are configured to receive data signals. The driver chip is connected with the scan lines and the data lines, and configured to generate the scan signals and the data signals. A plurality of connection lines that are connected the driver chip with the data lines and scan lines are led out from a side of the driver chip.
    Type: Grant
    Filed: October 26, 2017
    Date of Patent: July 21, 2020
    Assignee: SHENZHEN CHINA STAR OPTOELECTRONICS SEMICONDUCTOR DISPLAY TECHNOLOGY CO., LTD.
    Inventors: Chenglei Nie, Baixiang Han
  • Patent number: 10714015
    Abstract: In an organic light emitting diode (OLED) display device, a source driver chip is connected with the data lines through a plurality of first connection lines, and a gate driver chip connected with the scan lines through a plurality of second connection lines. The source driver chip and the gate driver chip are arranged on a same side of the OLED display device, and the first connection lines and the second connection lines are led from a side of the source driver chip.
    Type: Grant
    Filed: October 26, 2017
    Date of Patent: July 14, 2020
    Assignee: SHENZHEN CHINA STAR OPTOELECTRONICS SEMICONDUCTOR DISPLAY TECHNOLOGY CO., LTD.
    Inventors: Chenglei Nie, Baixiang Han
  • Patent number: 10693087
    Abstract: The present disclosure provides a display panel. The display panel has a display region and a packaging region disposed outside the display region, and includes an array substrate including a glass substrate, a flexible substrate disposed on the glass substrate, and a scanning line and a data lines disposed on the flexible substrate, a bending region extending outside the packaging region is disposed outside the packaging region at at least one side of the flexible substrate, a metal wire array used for connecting the scanning line and the data line of the array substrate to row driving and column driving chips is disposed in the bending region on the flexible substrate, and the bending region is bent toward a side surface of the flexible substrate deviating from the scanning line.
    Type: Grant
    Filed: July 10, 2017
    Date of Patent: June 23, 2020
    Assignee: Shenzhen China Star Optoelectronics Semiconductor Display Technology Co., Ltd.
    Inventors: Baixiang Han, Yuan-chun Wu, Po-Yen Lu
  • Patent number: 10565930
    Abstract: The invention discloses a power configuration structure and method for top-emitting AMOLED panel. The structure comprises: a plurality of VDD electrodes, for inputting a high voltage power source to AMOLED panel pixel driver circuit, and a transparent cathode, for inputting a low voltage power source to the AMOLED panel pixel driver circuit, the transparent cathode being prepared by a planar vapor deposition process, VSS power input points being disposed on two opposite sides of the transparent cathode; the plurality of VDD electrodes being arranged in parallel with a direction perpendicular to the VSS power input points, each VDD electrode having two ends disposed with VDD power input points. The invention also provides a corresponding power configuration method. The power configuration structure and method of the invention combines a 3T1C driver circuit to effectively relieve the IR voltage drop caused by impedance increase of the transparent cathode to improve display.
    Type: Grant
    Filed: November 15, 2017
    Date of Patent: February 18, 2020
    Assignee: SHENZHEN CHINA STAR OPTOELECTRONICS SEMICONDUCTOR DISPLAY TECHNOLOGY CO., LTD.
    Inventor: Baixiang Han
  • Patent number: 10529944
    Abstract: An organic light-emitting diode display is provided. The organic light-emitting diode display has an anode layer, an organic layer disposed on the anode layer, and a cathode layer disposed on the organic layer and comprising a plurality of cathode lines. The organic light-emitting diode display comprises a plurality of pixel columns corresponding to the cathode lines. Pixels in the same pixel column have the same color, and the cathode lines corresponding to the pixel columns having different colors are inputted with different cathode voltages, respectively.
    Type: Grant
    Filed: October 26, 2017
    Date of Patent: January 7, 2020
    Assignee: SHENZHEN CHINA STAR OPTOELECTRONICS SEMICONDUCTOR DISPLAY TECHNOLOGY CO., LTD.
    Inventors: Weijing Zeng, Baixiang Han
  • Patent number: 10475823
    Abstract: The present invention provides a method for manufacturing a TFT substrate and a structure thereof. The method for manufacturing the TFT substrate arranges a connection electrode (83) that connects two dual gate TFTs in a third metal layer to prevent the design rules of a connection electrode and a second metal layer of the prior art techniques from being narrowed due to the connection electrode being collectively present on the second metal layer with signal lines of a data line and a voltage supply line so as to facilitate increase of an aperture ratio and definition of a display panel. The present invention provides a TFT substrate structure, which has a simple structure and possesses a high aperture ratio and high definition.
    Type: Grant
    Filed: April 24, 2018
    Date of Patent: November 12, 2019
    Assignee: SHENZHEN CHINA STAR OPTOELECTRONICS TECHNOLOGY CO., LTD.
    Inventors: Longqiang Shi, Baixiang Han
  • Patent number: 10446085
    Abstract: The invention provides a GOA circuit, comprising: a plurality of GOA units connected in cascade, for integer n, the n-th GOA unit for outputting an n-th horizontal scan signal comprising: a pull-up unit (10), a pull-up control unit (20), a propagation unit (30), a pull-down unit (40), a pull-down maintenance unit (50), and a bootstrap capacitor (Cbt); the pull-up unit connected to n-th horizontal scan signal output end (G(n)), first node (Q), second node (K), and first clock signal (CLKB); the pull-up control unit connected to first node Q(Q), second node (K), second clock signal (CLK), third node (N), current-stage cascade-propagate signal output end (Cout(n)), and previous-stage cascade-propagate signal output end (Cout(n?1)) or start pulse (STV). The GOA circuit of the invention can maintain node Q voltage level, realize wide bandwidth pulse signal output.
    Type: Grant
    Filed: November 16, 2017
    Date of Patent: October 15, 2019
    Assignee: SHENZHEN CHINA STAR OPTOELECTRONICS SEMICONDUCTOR DISPLAY TECHNOLOGY CO., LTD.
    Inventors: Yan Xue, Baixiang Han
  • Publication number: 20190221161
    Abstract: The invention discloses a power configuration structure and method for top-emitting AMOLED panel. The structure comprises: a plurality of VDD electrodes, for inputting a high voltage power source to AMOLED panel pixel driver circuit, and a transparent cathode, for inputting a low voltage power source to the AMOLED panel pixel driver circuit, the transparent cathode being prepared by a planar vapor deposition process, VSS power input points being disposed on two opposite sides of the transparent cathode; the plurality of VDD electrodes being arranged in parallel with a direction perpendicular to the VSS power input points, each VDD electrode having two ends disposed with VDD power input points. The invention also provides a corresponding power configuration method. The power configuration structure and method of the invention combines a 3T1C driver circuit to effectively relieve the IR voltage drop caused by impedance increase of the transparent cathode to improve display.
    Type: Application
    Filed: November 15, 2017
    Publication date: July 18, 2019
    Inventor: Baixiang Han
  • Patent number: 10354592
    Abstract: The invention provides an AMOLED pixel driver circuit, comprising: first TFT (T1), with top gate connected to first node (G), bottom gate connected to second node (B), source and drain connected respectively to high voltage power source (VDD) and third node (S); second TFT (T2), with gate connected to scan line (Scan), source and drain connected respectively to first node (G) and first data line (Data1); third TFT (T3), with gate connected to scan line (Scan), source and drain connected respectively to sense signal line (Sense) and third node (S); fourth TFT (T4), with gate connected to scan line (Scan), source and drain connected respectively to second node (B) and second data line (Data2); first capacitor (C), connected to second node (B) and high voltage power source (VDD); second capacitor Cst, connected to first node (G) and third node (S); OLED (D1), with anode connected to third node (S).
    Type: Grant
    Filed: November 16, 2017
    Date of Patent: July 16, 2019
    Assignee: SHENZHEN CHINA STAR OPTOELECTRONICS SEMICONDUCTOR DISPLAY TECHNOLOGY CO., LTD.
    Inventor: Baixiang Han
  • Patent number: 10347184
    Abstract: A pixel compensation circuit, a driving method and a display device are disclosed. The pixel compensation circuit includes: a light-emitting element; a driving switch, a first terminal is connected to a power source voltage; a first switch and a control terminal is connected to a first scanning signal, a first terminal is connected to a data signal; a second switch, a control terminal is connected to a control signal and a first terminal is connected to the second terminal of the driving switch; a third switch, a control terminal is connected to a second scanning signal; a storage capacitor, a first terminal is connected to a control terminal of the driving switch, a second terminal is connected to the second terminal of the second switch. Through the above method, the affection of the current flowing through the light-emitting element caused by the threshold voltage of the driving switch is canceled.
    Type: Grant
    Filed: April 6, 2017
    Date of Patent: July 9, 2019
    Assignee: Shenzhen China Star Optoelectronics Technology Co., Ltd
    Inventors: Baixiang Han, Liang Sun
  • Patent number: 10304381
    Abstract: The present disclosure relates to a pixel compensation circuit and a driving method thereof, and a display device. The pixel compensation circuit includes a light emitting component, a driving transistor, a first transistor, a second transistor, a third transistor, a fourth transistor, a fifth transistor, and a storage capacitor. One end of the light emitting component connects to the common voltage (VSS). One end of the driving transistor connects to the power voltage (VDD). A control end of the first transistor (T1) connects to first scanning signals (Scan). A control end of the second transistor (T2) connects to the first scanning signals (Scan). A control end of the third transistor (T3) connects to the first scanning signals (Scan). A control end of the fourth transistor (T4) connects to second scanning signals (Scan2). A control end of the fifth transistor (T5) connects to the first scanning signals (Scan).
    Type: Grant
    Filed: April 6, 2017
    Date of Patent: May 28, 2019
    Assignee: Shenzhen China Star Optoelectronics Technology Co., Ltd
    Inventor: Baixiang Han
  • Patent number: 10304994
    Abstract: The present invention discloses an organic light emitting display panel. Wherein the organic light emitting display panel comprises: a substrate; a plurality of anode electrodes; a pixel defining layer for defining an effective light emitting area and a non-effective light emitting area; a blocking pattern is arranged on the pixel defining layer; an organic light emitting layer is arranged on the anode electrode, the blocking pattern, and the pixel defining layer; a cathode layer is arranged on the organic light emitting layer, wherein the blocking pattern separates the organic light emitting layer and the cathode layer in the effective light emitting area, and the organic light emitting layer and the cathode layer in the none-effective light emitting area. By the above-mentioned description, the present invention can reduce light leakage caused by lateral conduction of the organic light emitting layer, thereby display quality of the panel can be improved.
    Type: Grant
    Filed: May 19, 2017
    Date of Patent: May 28, 2019
    Assignee: Shenzhen China Star Optoelectronics Semiconductor Display Technology Co., Ltd
    Inventor: Baixiang Han
  • Patent number: 10290688
    Abstract: The present invention provides an AMOLED device and a manufacturing method thereof. The manufacturing method of the AMOLED device according to the present invention adopts an ink jet printing operation to form an anode of the AMOLED device and thus, compared to the prior art operations, saves one mask and reduces one round of photoengraving thereby simplifying the manufacturing operation of the AMOLED device and lowering the manufacturing costs. The AMOLED device according to the present invention comprises an anode that is formed through an ink jet printing operation, so that the manufacturing operation is simplified and the manufacturing cost is reduced.
    Type: Grant
    Filed: December 16, 2016
    Date of Patent: May 14, 2019
    Assignee: SHENZHEN CHINA STAR OPTOELECTRONICS TECHNOLOGY CO., LTD.
    Inventors: Baixiang Han, Yuanchun Wu