Patents by Inventor Cuili GAI

Cuili GAI 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: 10607545
    Abstract: An OLED driving circuit, an array substrate and a display device are provided. The OLED driving circuit includes a plurality of driving TFTs and a plurality of sense TFTs. Each sense TFT is configured to compensate for a threshold voltage of the respective driving TFT. Each sense TFT corresponds to a respective one of the driving TFTs, a source electrode of each sense TFT is connected to a sense line, and a drain electrode thereof is connected to a drain electrode of the respective driving TFT. The plurality of sense TFTs is divided into a plurality of groups, each group includes at least two sense TFTs which share a same gate electrode and a same source electrode and are connected to a same sense line.
    Type: Grant
    Filed: June 30, 2017
    Date of Patent: March 31, 2020
    Assignee: BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Yicheng Lin, Quanhu Li, Cuili Gai, Baoxia Zhang, Longyan Wang, Ling Wang
  • Publication number: 20200082756
    Abstract: A display panel, a display device and a compensation method are provided. The display panel includes at least one pixel unit group, at least one sensing line, a plurality of gate lines, a plurality of first data lines and a plurality of second data lines. Each pixel unit group includes a plurality of pixel units arranged in two rows and a plurality of columns, the plurality of pixel units in each pixel unit group are connected to a same one of the gate lines, one of two pixel units in each column of each pixel unit group is connected to one of the first data lines corresponding thereto, other one is connected to one of the second data lines corresponding thereto, the plurality of pixel units in each pixel unit group are connected to a same sensing line.
    Type: Application
    Filed: June 30, 2017
    Publication date: March 12, 2020
    Applicants: BOE Technology Group Co., Ltd., BOE Technology Group Co., Ltd.
    Inventors: Yi Cheng Lin, Quanhu Li, Cuili Gai, Ling Wang, Baoxia Zhang
  • Patent number: 10546519
    Abstract: The embodiments of the present disclosure disclose a gate driving circuit and a display panel. In the gate driving circuit, a control unit of a shift register may input a dual pulse control signal to a first control terminal of an output unit; and the output unit outputs a scanning signal having a pulse width equal to a pulse period of the dual pulse control signal to a corresponding gate line under the control of the dual pulse control signal. In this way, the output unit is controlled by the control unit to output a scanning signal of which a pulse width may be modulated, so as to output a gate signal of which a pulse width may be modulated.
    Type: Grant
    Filed: March 22, 2017
    Date of Patent: January 28, 2020
    Assignee: BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Ling Wang, Quanhu Li, Longyan Wang, Baoxia Zhang, Cuili Gai, Yicheng Lin
  • Patent number: 10510290
    Abstract: The present invention provides a display apparatus with display screen burn-ins prevention functions, comprising a calculation module configured to identify a set of to-be-adjusted grayscale edge pixels corresponding to a static display part in a detection area based on a plurality of sets of grayscale edge pixels identified from a plurality of images in the detection area at different time instances; a determination module configured to determine whether the set of to-be-adjusted grayscale edge pixels is an empty set; and an adjustment module configured to adjust intensity levels of the to-be-adjusted grayscale edge pixels when the determination module determines that the set of to-be-adjusted grayscale edge pixels is not an empty set.
    Type: Grant
    Filed: December 10, 2015
    Date of Patent: December 17, 2019
    Assignee: BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Danna Song, Zhongyuan Wu, Song Meng, Cuili Gai
  • Patent number: 10510901
    Abstract: A thin film transistor and a fabrication method thereof, an array substrate and a display device are provided. The thin film transistor comprises a gate electrode, an active layer, a source electrode and a drain electrode. The source electrode and the drain electrode include a first conductive layer provided on the active layer, and an etching rate of a material of the first conductive layer is greater than an etching rate of a material of the active layer in an etching liquid. The problem that the active layer of the thin film transistor is easily corroded in a back channel etch process is avoided, a number of patterning processes is reduced, and fabrication cost is reduced.
    Type: Grant
    Filed: September 24, 2015
    Date of Patent: December 17, 2019
    Assignee: BOE Technology Group Co., Ltd.
    Inventors: Longyan Wang, Yongqian Li, Cuili Gai, Quanhu Li, Baoxia Zhang, Jingwen Yin, Kun Cao, Zhongyuan Wu, Gang Wang
  • Patent number: 10490573
    Abstract: The present invention provides a manufacturing method of an array substrate, comprising a step of forming insulation layers in a driving area and a display area of the array substrate, wherein thin film transistors are provided in both the display area and the driving area; the insulation layers are arranged between gate electrodes and active layers of the thin film transistors. A thickness of the insulation layer of the thin film transistor in the driving area is larger than a thickness of the insulation layer of the thin film transistor in the display area.
    Type: Grant
    Filed: November 29, 2017
    Date of Patent: November 26, 2019
    Assignee: BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Cuili Gai, Xiaodi Liu
  • Publication number: 20190348606
    Abstract: A test substrate includes a base and a first electrode layer, a pixel defining layer, a light-emitting functional layer and a second electrode layer disposed on the base in sequence. The test substrate has at least two test regions, and each test region is a region where one first electrode of the plurality of first electrodes is located. Each test region includes a first region. Orthographic projections of portions of the pixel defining layer and the light-emitting functional layer located in a same first region on the base overlap with each other, and areas of orthographic projections of portions of the first electrode layer located in first regions of the at least two test regions are different.
    Type: Application
    Filed: May 7, 2019
    Publication date: November 14, 2019
    Inventors: Ling WANG, Cuili GAI, Pan XU, Yicheng LIN
  • Publication number: 20190318684
    Abstract: A method for compensating the pixel driving circuit may include: in a light emitting phase of the pixel driving circuit, sensing an electric signal of the first electrode of the electroluminescent element, and calculating an electrical compensation signal based on the electric signal; in the light emitting phase of the pixel driving circuit, sensing a brightness signal of the electroluminescent element by a photosensitive sensor and calculating an optical compensation signal according to the brightness signal; and generating a comprehensive compensation signal according to the electrical compensation signal and the optical compensation signal, and controlling a signal on a control terminal of the drive transistor according to the comprehensive compensation signal.
    Type: Application
    Filed: November 12, 2018
    Publication date: October 17, 2019
    Inventors: Cuili GAI, Yicheng LIN, Ling WANG, Pan XU
  • Patent number: 10438542
    Abstract: A detection circuit, a detection method and a pixel driving circuit are disclosed in the embodiments of the present disclosure. The detection circuit comprises a first detection unit, a second detection unit, a load unit, a light emitting device and a driving unit. The first detection module connected to the driving unit and the load unit. The second detection unit is connected to the light emitting device and the load unit.
    Type: Grant
    Filed: September 30, 2015
    Date of Patent: October 8, 2019
    Assignee: BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Yongqian Li, Longyan Wang, Cuili Gai
  • Publication number: 20190280127
    Abstract: A thin film transistor, a manufacturing method of the thin film transistor, an array substrate and a manufacturing method of the array substrate are provided. The thin film transistor includes a base substrate, a metal light-shielding layer and a first active layer which are on the base substrate, and a spacer layer between the first active layer and the metal light-shielding layer; the first active layer includes a channel region, and the spacer layer is between the channel region and the metal light-shielding layer.
    Type: Application
    Filed: January 4, 2018
    Publication date: September 12, 2019
    Applicant: BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Cuili GAI, Ling WANG, Baoxia ZHANG
  • Publication number: 20190280066
    Abstract: A pixel circuit and a driving method thereof, and a display panel is provided. The pixel circuit includes a first selection circuit, a first driving circuit, a first capacitor a first sensing circuit, a first organic light emitting element, a second capacitor and a capacitor control circuit. The first selection circuit and the first capacitor are electrically connected, and are configured to control the first driving circuit; the first sensing circuit is electrically connected to the first driving circuit and the first organic light emitting element and is configured to sense the first driving circuit or the first organic light emitting element; and the capacitor control circuit is configured to allow the first capacitor and the second capacitor to be connected in parallel or to be disconnected.
    Type: Application
    Filed: November 24, 2017
    Publication date: September 12, 2019
    Applicant: BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Yi-Cheng LIN, Quanhu LI, Yu WANG, Cuili GAI, Ming I CHU, Chien Pang HUANG
  • Publication number: 20190221633
    Abstract: The present disclosure is related to a display substrate. The display substrate may include a plurality of pixel units. Each of the plurality of the pixel units may include a first electrode and a second electrode on a base substrate. At least one of the pixel units further comprises an auxiliary electrode and a connecting structure between the auxiliary electrode and the first electrode. The connecting structure may be configured to electrically connect the auxiliary electrode to the first electrode.
    Type: Application
    Filed: April 26, 2018
    Publication date: July 18, 2019
    Applicant: BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Cuili Gai, Ling Wang, Yicheng Lin, Baoxia Zhang, Pan Xu, Quanhu Li
  • Patent number: 10355064
    Abstract: The present disclosure provides an active-matrix organic light emitting diode display substrate, a method for fabricating the display substrate and a display device. The active-matrix organic light emitting diode display substrate includes two storage capacitors connected in parallel, an active layer of TFT and an electrode of the new added storage capacitor are formed through a single patterning process, and the electrode is made of conductor material.
    Type: Grant
    Filed: May 26, 2017
    Date of Patent: July 16, 2019
    Assignee: BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Cuili Gai, Yicheng Lin
  • Publication number: 20190189839
    Abstract: The present disclosure provides a display panel, a display device comprising such a display panel, and a method for processing defective pixels of such a display panel. The display panel comprises: a substrate; a plurality of pixel units on the substrate and arranged in an array. Each of the pixel units includes a light emitting region and a driving circuit region. In each of the pixel units, the driving circuit region includes a transistor, the light emitting region includes a first electrode, and the first electrode is electrically coupled to a first terminal of the transistor. In a row direction or a column direction of the plurality of pixel units arranged in an array, light emitting regions of two adjacent pixel units are adjacent to each other.
    Type: Application
    Filed: November 7, 2018
    Publication date: June 20, 2019
    Inventors: Yicheng LIN, Cuili Gai, Baoxia Zhang, Ling Wang, Quanhu Li, Pan Xu
  • Publication number: 20190189056
    Abstract: The present disclosure relates to a display device, a display substrate, a method and a device for display compensation. The method includes: before displaying an image, performing initial compensation on each of the pixel circuits to obtain an average reference voltage of the plurality of pixel circuits; controlling the display substrate to display an image and performing external compensation on each of the pixel circuits during a display duration of one frame of the image, obtaining a charging voltage on the sensing line of each of the pixel circuits during the external compensation, obtaining a first reference voltage of each of the pixel circuits according to the charging voltage on the sensing line and the average reference voltage, and performing internal compensation on each of the pixel circuits according to the first reference voltage.
    Type: Application
    Filed: August 30, 2018
    Publication date: June 20, 2019
    Inventors: Cuili Gai, Baoxia Zhang, Ling Wang, Pan XU, Yicheng Lin
  • Publication number: 20190189733
    Abstract: An array substrate, an electroluminescent display panel, and a display device are disclosed. The array substrate includes: a base substrate, and a first signal line, an insulating layer and a second signal line provided sequentially on the base substrate in a direction perpendicular to the base substrate; wherein the first signal line has a first portion and a second portion, the first portion has a resistance higher than a resistance of the second portion, and at least a part of the first portion is overlapped with the second signal line, and the second portion is non-overlapped with the second signal line.
    Type: Application
    Filed: March 22, 2018
    Publication date: June 20, 2019
    Inventors: Baoxia Zhang, Cuili Gai, Yicheng Lin
  • Publication number: 20190180687
    Abstract: The present disclosure provides an OLED pixel driving circuit, a driving method thereof and a display device including the same. The OLED pixel driving circuit includes: a first transistor, providing driving current to an organic light emitting diode, and comprising a first terminal, second terminal and control terminal coupled to a first node, second node and third node respectively; a power switch unit, coupled between a power supply voltage and the second node; a first switch unit, coupled between a data line and a fourth node to couple a data voltage signal from the data line to the fourth node; a second switch unit, coupled between the third node and the second node to enable the first transistor connected as a diode; a first capacitor, coupled between the fourth node and the first node; and a second capacitor, coupled between the fourth node and the second node.
    Type: Application
    Filed: June 29, 2018
    Publication date: June 13, 2019
    Inventors: Cuili GAI, Yi Cheng LIN, Ling WANG, Baoxia ZHANG, Pan XU
  • Publication number: 20190164464
    Abstract: A reference voltage circuit, a reference voltage supply main circuit and a display device are provided. The reference voltage circuit includes N first voltage lines and M second voltage lines configured to receive first and second voltages, respectively, and a resistance circuit including M resistors. A m-th resistor includes P first sub-resistors, and first and second terminals of a p-th one of the first sub-resistors is connected to a p-th one of the first voltage lines and a m-th one of the second voltage lines; a resistance value of each first sub-resistor is larger than that of each first voltage line, P is a positive integer smaller than or equal to N, m is a positive integer smaller than or equal to M, and p is a positive integer smaller than or equal to P.
    Type: Application
    Filed: October 30, 2018
    Publication date: May 30, 2019
    Applicant: BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Baoxia ZHANG, Ling WANG, Cuili GAI
  • Patent number: 10276098
    Abstract: There are provided in the present disclosure a pixel driving circuit, an array substrate and a display apparatus.
    Type: Grant
    Filed: October 30, 2015
    Date of Patent: April 30, 2019
    Assignee: BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Cuili Gai, Kun Cao, Baoxia Zhang, Yongqian Li, Quanhu Li, Longyan Wang, Jingwen Yin
  • Patent number: 10262571
    Abstract: The present disclosure provides a method and an apparatus for controlling image display of a WOLED display apparatus and a WOLED display apparatus. The method includes: converting gray scale data of respective lights with various colors inputted by a signal source into brightness data of the respective lights with various colors; acquiring brightness adjustment data of white sub-pixel lights and brightness adjustment data of the respective lights with various colors on the basis of the brightness data of the respective lights with various colors and proportions of the respective lights with various colors in the white sub-pixel lights; converting the brightness adjustment data of white sub-pixel lights and brightness adjustment data of the respective lights with various colors into gray scale data and outputting and displaying the gray scale data. The above method and apparatus provides a simple calculating method when adjusting the display data and may eliminate color cast.
    Type: Grant
    Filed: October 21, 2015
    Date of Patent: April 16, 2019
    Assignee: BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Danna Song, Cuili Gai, Szu Heng Tseng, Song Meng, Zhongyuan Wu