Patents by Inventor Xingji WU

Xingji WU 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: 9767758
    Abstract: There are provided a driving apparatus of a display panel and a driving method thereof, and a display device. The driving apparatus of the display panel comprises a gate driver circuit (101) configured to input a turn-on signal to each gate line on the display panel at a first moment; and a source driver circuit (102) configured to input a first voltage to each data line on the display panel at a first moment, the first voltage being a common electrode voltage of the display panel. The driving apparatus and the driving method, and the display device are capable of raising the effect of eliminating shutdown image sticking.
    Type: Grant
    Filed: June 15, 2015
    Date of Patent: September 19, 2017
    Assignees: BOE Technology Group Co., Ltd., Beijing BOE Display Technology Co., Ltd.
    Inventors: Zhihua Sun, Seung Min Lee, Xingji Wu, Jianming Wang, Shulin Yao, Baoyu Liu, Weichao Ma
  • Patent number: 9741304
    Abstract: The application relates to a shift register unit and a driving method thereof, a shift register circuit and a display apparatus. The shift register unit may include a gate starting terminal, a first clock terminal, a second clock terminal, a reset terminal, a low level terminal, a gate output terminal, a storage capacitor, a charging module, an output control module and a reset module. In the shift register according to the present application, since the reset operation is under control of the second transistor and the fifth transistor both, an improper reset operation will not occur, even if the signal at the reset terminal is unstable.
    Type: Grant
    Filed: March 27, 2015
    Date of Patent: August 22, 2017
    Assignees: BOE TECHNOLOGY GROUP CO., LTD., BEIJING BOE DISPLAY TECHNOLOGY CO., LTD.
    Inventors: Shulin Yao, Seung Min Lee, Zhihua Sun, Xingji Wu, Wenhai Cui, Baoyu Liu
  • Patent number: 9536498
    Abstract: The present invention relates to the field of display technology, and in particular to an apparatus and a method for improving uneven display brightness, and a display device. The apparatus for improving uneven display rightness includes: a division module configured to divide a display region into a plurality of segmented regions in a scanning line direction; a collection module configured to collect display brightness of the respective segmented regions; a comparison module configured to set reference brightness in a current grayscale according to the collected display brightness of the respective segmented regions; and an adjustment module configured to adjust the display brightness in the current grayscale of each segmented region according to the reference brightness in the current grayscale and the display brightness of each segmented region, so as to reduce the differences in the display brightness in the current grayscale among the respective segmented regions.
    Type: Grant
    Filed: April 25, 2014
    Date of Patent: January 3, 2017
    Assignees: BOE TECHNOLOGY GROUP CO., LTD., BEIJING BOE DISPLAY TECHNOLOGY CO., LTD.
    Inventors: Xingji Wu, Yu Xie, Yizhen Xu
  • Publication number: 20160365056
    Abstract: There are provided a driving apparatus of a display panel and a driving method thereof, and a display device. The driving apparatus of the display panel comprises a gate driver circuit (101) configured to input a turn-on signal to each gate line on the display panel at a first moment; and a source driver circuit (102) configured to input a first voltage to each data line on the display panel at a first moment, the first voltage being a common electrode voltage of the display panel. The driving apparatus and the driving method, and the display device are capable of raising the effect of eliminating shutdown image sticking.
    Type: Application
    Filed: June 15, 2015
    Publication date: December 15, 2016
    Applicants: BOE TECHNOLOGY GROUP CO., LTD., BEIJING BOE DISPLAY TECHNOLOGY CO., LTD.
    Inventors: Zhihua SUN, Seung Min LEE, Xingji WU, Jianming WANG, Shulin YAO, Baoyu LIU, Weichao MA
  • Patent number: 9472143
    Abstract: A pixel structure and driving method thereof, a display panel and a display device. The pixel structure includes a plurality of sub-pixels arranged in a form of array, each sub-pixel is driven by a thin film transistor; wherein, sub-pixels provided in a same row are driven by two gate lines located thereon and thereunder; one data line serves to drive two columns of sub-pixels located on two sides of it; a plurality of sub-pixels in two adjacent rows that are driven by one data line constitute one pixel unit. For the pixel structure, there is further provided a driving method, and the pixel structure is easy to be driven and has a simple sequence control.
    Type: Grant
    Filed: June 4, 2013
    Date of Patent: October 18, 2016
    Assignees: BEIJING BOE DISPLAY TECHNOLOGY CO., LTD., BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Yizhen Xu, Zhihua Sun, Xingji Wu, Jianming Wang, Baoyu Liu, Liang Zhang
  • Publication number: 20160260398
    Abstract: The application relates to a shift register unit and a driving method thereof, a shift register circuit and a display apparatus. The shift register unit may include a gate starting terminal, a first clock terminal, a second clock terminal, a reset terminal, a low level terminal, a gate output terminal, a storage capacitor, a charging module, an output control module and a reset module. In the shift register according to the present application, since the reset operation is under control of the second transistor and the fifth transistor both, an improper reset operation will not occur, even if the signal at the reset terminal is unstable.
    Type: Application
    Filed: March 27, 2015
    Publication date: September 8, 2016
    Inventors: Shulin Yao, Seung Min Lee, Zhihua Sun, Xingji Wu, Wenhai Cui, Baoyu Liu
  • Patent number: 9437147
    Abstract: A polarity inversion driving method, a driving apparatus and a liquid crystal display device, for attenuating the flickers due to POL inversion. The polarity inversion driving method is used for inversion of polarity of pixels on the liquid crystal panel, and comprises: generating a polarity inversion reference signal for reflecting selection of polarity of each row of pixels on the liquid crystal panel; generating a control signal comprising control levels generated in m frames, where m is an integer higher than or equal to two, wherein width of the control level in each of the m frames is gradually increased in chronological order to be equal to a time length of one frame; as an alternative, the width of the control level in each of the m frames is gradually decreased in chronological order from the time length of one frame to zero; and generating a polarity inversion signal from the polarity inversion reference signal and the control signal.
    Type: Grant
    Filed: May 8, 2013
    Date of Patent: September 6, 2016
    Assignees: BOE TECHNOLOGY GROUP CO., LTD., BEIJING BOE DISPLAY TECHNOLOGY CO., LTD.
    Inventors: Xingji Wu, Yizhen Xu, Liang Zhang
  • Patent number: 9406267
    Abstract: A polarity inversion driving method, a driving apparatus and a liquid crystal display device, for attenuating the flickers due to POL inversion. The polarity inversion driving method is used for inversion of polarity of pixels on the liquid crystal panel, and comprises: generating a polarity inversion reference signal for reflecting selection of polarity of each row of pixels on the liquid crystal panel; generating a control signal comprising control levels generated in m frames, where m is an integer higher than or equal to two, wherein width of the control level in each of the m frames is gradually increased in chronological order to be equal to a time length of one frame; as an alternative, the width of the control level in each of the m frames is gradually decreased in chronological order from the time length of one frame to zero; and generating a polarity inversion signal from the polarity inversion reference signal and the control signal.
    Type: Grant
    Filed: May 8, 2013
    Date of Patent: August 2, 2016
    Assignees: BOE TECHNOLOGY GROUP CO., LTD., BEIJING BOE DISPLAY TECHNOLOGY CO., LTD.
    Inventors: Xingji Wu, Yizhen Xu, Liang Zhang
  • Patent number: 9330625
    Abstract: A maintenance circuit for a display panel, the display panel being divided by a plurality of source driver integrated circuits into a plurality of partitions(X1-X8) corresponding thereto, wherein each of source driver integrated circuits controls one partition, each four of adjacent partitions form a group of partitions, each of the maintenance circuit units comprises: a first maintenance line(RP1, RP3) and a second maintenance line(RP2, RP4) each provided with a half-turn shape surrounding around a group of partitions corresponding thereto; a first operational amplifier(OP1, OP3) and a second operational amplifier(OP2, OP4), the inverting input terminal of each of which is connected to an output terminal thereof and is connected to a corresponding maintenance line; and a plurality of resistors(R1-R8, L1-L8) selectively connected in accordance with two partitions of the group of the partitions to be maintained, so as to respectively import the two partitions to non-inverting input terminals of the two operati
    Type: Grant
    Filed: May 10, 2013
    Date of Patent: May 3, 2016
    Assignees: BOE TECHNOLOGY GROUP CO., LTD., BEIJING BOE DISPLAY TECHNOLOGY CO., LTD.
    Inventors: Yizhen Xu, Zhihua Sun, Xingji Wu, Jianming Wang, Liang Zhang
  • Patent number: 9311839
    Abstract: A method for driving a liquid crystal panel, a method for testing flicker and a liquid crystal display apparatus are disclosed. They relate to the technical field of liquid crystal display. By changing the driving mode of polarity inversion, it is achieved that the flicker test is performed on the liquid crystal panel with the Z inversion array arrangement on basis of the flicker test pattern of 1+2H. In two adjacent columns of pixel units in the plurality of pixel units, one column common data line is connected with the pixel electrodes located at the opposed sides of the common data line alternatively through the thin film transistors.
    Type: Grant
    Filed: December 9, 2013
    Date of Patent: April 12, 2016
    Assignees: BOE TECHNOLOGY GROUP CO., LTD., Beijing BOE Display Technology Co., Ltd.
    Inventors: Yizhen Xu, Zhihua Sun, Xingji Wu, Jianming Wang, Liang Zhang
  • Patent number: 9286821
    Abstract: The present disclosure relates to the display technique. Disclosed is a display driving circuit, including: a gate line driving circuit, configured to separate gate line driving signals of adjacent rows according to a first output enable signal; a shielding signal generation circuit, configured to trigger and generate a shielding signal when the gate line driving signal needs to be turned off; and a gate line shielding circuit configured to shield the first output enable signal according to the shielding signal so as to turn off the gate line driving signal, wherein the first output enable signal is inputted from a first inputting terminal of the gate line shielding circuit, the shielding signal is inputted from a second inputting terminal of the gate line shielding circuit, and an outputting terminal of the gate line shielding circuit is connected to the gate line driving circuit.
    Type: Grant
    Filed: May 20, 2013
    Date of Patent: March 15, 2016
    Assignees: BOE TECHNOLOGY GROUP CO., LTD., BEIJING BOE DISPLAY TECHNOLOGY CO., LTD.
    Inventors: Xingji Wu, Seung Min Lee, Yizhen Xu, Liang Zhang
  • Patent number: 9269288
    Abstract: The present disclosure provides a method for generating a test chart for Gamma value of a display device and a method for testing Gamma value thereof. The method includes: determining a grayscale corresponding to a generated test chart for Gamma value of the display device, and determining luminance of a standard picture area represented by the test chart for Gamma value of the display device; determining a grayscale voltage of a test picture area according to the grayscale corresponding to the standard picture area in the display panel, and determining the luminance of the test picture area displayed by the display panel under the grayscale voltage; comparing the luminance of the test picture area and the luminance of the standard picture area, and determining the Gamma value of the display device according to the result of the comparison.
    Type: Grant
    Filed: November 8, 2013
    Date of Patent: February 23, 2016
    Assignees: BOE TECHNOLOGY GROUP CO., LTD., BEIJING BOE DISPLAY TECHNOLOGY CO., LTD.
    Inventors: Xingji Wu, Jianming Wang, Zhihua Sun, Yizhen Xu, Liang Zhang
  • Publication number: 20150348488
    Abstract: The present invention discloses a gamma reference voltage generating circuit, an array substrate and a display device. The gamma reference voltage generating circuit comprises a voltage collection module, an original voltage generating module, an operation module, and an output voltage generating module, the operation module performs an operational processing on a feedback signal output from the voltage collecting module and an original gamma reference voltage signal output from the original voltage generating module to generate a new gamma reference voltage, which is then output by the output voltage generating module. The above circuit achieves the object that the gamma reference voltage is automatically adjusted with fluctuation of the common electrode voltage, keeps a balance of the voltage difference between the data voltage and the common electrode voltage when outputting signals via data lines, and avoids the greenish phenomenon caused by fluctuation of the voltage difference.
    Type: Application
    Filed: December 17, 2014
    Publication date: December 3, 2015
    Inventor: Xingji WU
  • Publication number: 20150332639
    Abstract: A pixel structure and driving method thereof, a display panel and a display device. The pixel structure includes a plurality of sub-pixels arranged in a form of array, each sub-pixel is driven by a thin film transistor; wherein, sub-pixels provided in a same row are driven by two gate lines located thereon and thereunder; one data line serves to drive two columns of sub-pixels located on two sides of it; a plurality of sub-pixels in two adjacent rows that are driven by one data line constitute one pixel unit. For the pixel structure, there is further provided a driving method, and the pixel structure is easy to be driven and has a simple sequence control.
    Type: Application
    Filed: June 4, 2013
    Publication date: November 19, 2015
    Inventors: Yizhen XU, Zhihua SUN, Xingji WU, Jianming WANG, Baoyu LIU, Liang ZHANG
  • Publication number: 20150287385
    Abstract: The present invention relates to the field of display technology, and in particular to an apparatus and a method for improving uneven display brightness, and a display device. The apparatus for improving uneven display rightness includes: a division module configured to divide a display region into a plurality of segmented regions in a scanning line direction; a collection module configured to collect display brightness of the respective segmented regions; a comparison module configured to set reference brightness in a current grayscale according to the collected display brightness of the respective segmented regions; and an adjustment module configured to adjust the display brightness in the current grayscale of each segmented region according to the reference brightness in the current grayscale and the display brightness of each segmented region, so as to reduce the differences in the display brightness in the current grayscale among the respective segmented regions.
    Type: Application
    Filed: April 25, 2014
    Publication date: October 8, 2015
    Inventors: Xingji Wu, Yu Xie, Yizhen Xu
  • Publication number: 20150269898
    Abstract: A maintenance circuit for a display panel, the display panel being divided by a plurality of source driver integrated circuits into a plurality of partitions(X1-X8) corresponding thereto, wherein each of source driver integrated circuits controls one partition, each four of adjacent partitions form a group of partitions, each of the maintenance circuit units comprises: a first maintenance line(RP1, RP3) and a second maintenance line(RP2, RP4) each provided with a half-turn shape surrounding around a group of partitions corresponding thereto; a first operational amplifier(OP1, OP3) and a second operational amplifier(OP2, OP4), the inverting input terminal of each of which is connected to an output terminal thereof and is connected to a corresponding maintenance line; and a plurality of resistors(R1-R8, L1-L8) selectively connected in accordance with two partitions of the group of the partitions to be maintained, so as to respectively import the two partitions to non-inverting input terminals of the two operati
    Type: Application
    Filed: May 10, 2013
    Publication date: September 24, 2015
    Inventors: Yizhen Xu, Zhihua Sun, Xingji Wu, Jianming Wang, Liang Zhang
  • Publication number: 20150221269
    Abstract: A polarity inversion driving method, a driving apparatus and a liquid crystal display device, for attenuating the flickers due to POL inversion. The polarity inversion driving method is used for inversion of polarity of pixels on the liquid crystal panel, and comprises: generating a polarity inversion reference signal for reflecting selection of polarity of each row of pixels on the liquid crystal panel; generating a control signal comprising control levels generated in m frames, where m is an integer higher than or equal to two, wherein width of the control level in each of the m frames is gradually increased in chronological order to be equal to a time length of one frame; as an alternative, the width of the control level in each of the m frames is gradually decreased in chronological order from the time length of one frame to zero; and generating a polarity inversion signal from the polarity inversion reference signal and the control signal.
    Type: Application
    Filed: May 8, 2013
    Publication date: August 6, 2015
    Inventors: XINGJI WU, YIZHEN XU, LIANG ZHANG
  • Publication number: 20150154901
    Abstract: The present disclosure relates to the display technique. Disclosed is a display driving circuit, including: a gate line driving circuit, configured to separate gate line driving signals of adjacent rows according to a first output enable signal; a shielding signal generation circuit, configured to trigger and generate a shielding signal when the gate line driving signal needs to be turned off; and a gate line shielding circuit configured to shield the first output enable signal according to the shielding signal so as to turn off the gate line driving signal, wherein the first output enable signal is inputted from a first inputting terminal of the gate line shielding circuit, the shielding signal is inputted from a second inputting terminal of the gate line shielding circuit, and an outputting terminal of the gate line shielding circuit is connected to the gate line driving circuit.
    Type: Application
    Filed: May 20, 2013
    Publication date: June 4, 2015
    Inventors: Xingji Wu, Seung Min Lee, Yizhen Xu, Liang Zhang
  • Publication number: 20140184967
    Abstract: A method for driving a liquid crystal panel, a method for testing flicker and a liquid crystal display apparatus are disclosed. They relate to the technical field of liquid crystal display. By changing the driving mode of polarity inversion, it is achieved that the flicker test is performed on the liquid crystal panel with the Z inversion array arrangement on basis of the flicker test pattern of 1+2H. In two adjacent columns of pixel units in the plurality of pixel units, one column common data line is connected with the pixel electrodes located at the opposed sides of the common data line alternatively through the thin film transistors.
    Type: Application
    Filed: December 9, 2013
    Publication date: July 3, 2014
    Applicants: Beijing Boe Display Technology Co., Ltd., Boe Technology Group Co., Ltd.
    Inventors: Yizhen Xu, Zhihua Sun, Xingji Wu, Jianming Wang, Liang Zhang
  • Publication number: 20140125674
    Abstract: The present disclosure provides a method for generating a test chart for Gamma value of a display device and a method for testing Gamma value thereof. The method includes: determining a grayscale corresponding to a generated test chart for Gamma value of the display device, and determining luminance of a standard picture area represented by the test chart for Gamma value of the display device; determining a grayscale voltage of a test picture area according to the grayscale corresponding to the standard picture area in the display panel, and determining the luminance of the test picture area displayed by the display panel under the grayscale voltage; comparing the luminance of the test picture area and the luminance of the standard picture area, and determining the Gamma value of the display device according to the result of the comparison.
    Type: Application
    Filed: November 8, 2013
    Publication date: May 8, 2014
    Applicants: BEIJING BOE DISPLAY TECHNOLOGY CO., LTD., BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: XINGJI WU, JIANMING WANG, ZHIHUA SUN, YIZHEN XU, LIANG ZHANG