Patents by Inventor Song Meng

Song Meng 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: 10762845
    Abstract: A compensation method for an electroluminescent display panel, a driving device, a display device, and a storage medium are provided. The compensation method includes: receiving a first display data signal; performing an optical compensation operation on the first display data signal to obtain a second display data signal; performing an electrical compensation operation on the second display data signal to obtain a third display data signal; and outputting the third display data signal for display.
    Type: Grant
    Filed: August 22, 2018
    Date of Patent: September 1, 2020
    Assignee: BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Ming I Chu, Zhongyuan Wu, Fei Yang, Song Meng, Danna Song
  • Patent number: 10755646
    Abstract: A driving method of an organic light-emitting display device, the display device includes a plurality of sub-pixels, each of the sub-pixels includes a driving transistor, an organic light-emitting diode and a sense line connected to the driving transistor and the organic light-emitting diode, the method includes: detecting threshold voltages of driving transistors of the sub-pixels or turn-on voltages of organic light-emitting diodes of the sub-pixels by sense lines; calculating a first driving voltage of a data driving circuit or a second driving voltage applied to anodes of the organic light-emitting diodes according to all detected threshold voltages or detected turn-on voltages respectively; and based on the first driving voltage or the second driving voltage, applying data driving voltages and supply voltages to the sub-pixels.
    Type: Grant
    Filed: February 17, 2017
    Date of Patent: August 25, 2020
    Assignee: BOE Technology Group Co., Ltd.
    Inventors: Fei Yang, Song Meng, Yue Wu, Yu Wang
  • Publication number: 20200211458
    Abstract: The present disclosure relates to a pixel circuit, a compensation method and a display device. The pixel circuit includes a first switching circuit for supplying a data voltage to a first node in response to a first scan signal being valid, a second switching circuit for conductively connecting a sensing signal line with a second node in response to a second scan signal being valid, a reset circuit for supplying a reset voltage to the sensing signal line in response to a reset control signal being valid, a light-emitting element, and a driving transistor for enabling, when the light-emitting element emits light, the sensing signal line to be charged in response to the second scan signal being valid and the reset control signal being invalid, the voltage of the sensing signal line is sensed after it was charged so as to compensate the data voltage.
    Type: Application
    Filed: July 3, 2019
    Publication date: July 2, 2020
    Inventors: Min HE, Song MENG, Fei YANG, Chun CAO, Xiaolong WEI
  • Publication number: 20200202792
    Abstract: A compensation method for a display panel, a compensation device for a display panel, and a display apparatus are provided. The display panel includes a plurality of pixel units, and each pixel unit includes a pixel circuit and a light-emitting element. The compensation method includes: detecting a threshold voltage of a drive transistor in the pixel circuit; detecting a maximum data voltage corresponding to a maximum brightness of the light-emitting element; and based on the threshold voltage, the maximum data voltage and an expected display brightness, calculating a compensation display data voltage in a normal display state after the display panel is compensated.
    Type: Application
    Filed: February 12, 2018
    Publication date: June 25, 2020
    Applicant: BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Song MENG, Fei YANG
  • Publication number: 20200160784
    Abstract: The present disclosure proposes a display control method and device, and a display panel. The display control method includes: acquiring a temperature compensation value of a row of pixel units in a display panel on which temperature compensation is currently performed; acquiring, according to the temperature compensation value, a brightness ratio corresponding to the temperature compensation value; and compensating for brightness of a row of pixel units in the display panel on which temperature compensation is not performed according to the brightness ratio.
    Type: Application
    Filed: August 1, 2019
    Publication date: May 21, 2020
    Inventors: Haixia Xu, Zhidong Yuan, Wenchao Bao, Can Yuan, Song Meng
  • Patent number: 10657890
    Abstract: A pixel driving circuit is provided, comprising: a current control circuit configured to provide a constant current signal and an activation signal, a current switching circuit configured to control the transmission of the constant current signal to a light-emitting device under the control of the activation signal, and a grounding control circuit configured to control the current control circuit to provide the constant current signal and the activation signal. An input terminal of the current control circuit is connected to a data line and a power line, respectively. A control terminal of the current switching circuit is connected to an output terminal of the current control circuit, an input terminal of the current switching circuit is connected to the input terminal of the current control circuit, and an output terminal of the current switching circuit s connected to an input terminal of the light-emitting device.
    Type: Grant
    Filed: July 31, 2018
    Date of Patent: May 19, 2020
    Assignees: BEIJING BOE DISPLAY TECHNOLOGY CO., LTD., BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Song Liu, Hengyu Yan, Boxiao Lan, Jinhui Cheng, Zhiming Meng, Chunbing Zhang, Rui Guo, Hanzhang Niu, Jianzi He
  • Patent number: 10642523
    Abstract: A method and apparatus for updating data in a memory for electrical compensation, the method comprises: when a master chip receives a power-off signal, writing a serial number of a block being updated or a predetermined value into a nonvolatile memory. In the apparatus, only a nonvolatile memory is required to be provided external to a master chip to store the serial number of the block (the sequence of the block) being updated currently during power-off. Upon a next power-on, it is determined that which rows have their data lost during the previous power-off according to the serial number of the block, and then data of adjacent rows is used to replace the data of the rows which have their data lost during the previous power-off; therefore, the operation is simple and the efficiency is high, so that the time for updating the data is short, without affecting the memory's lifespan.
    Type: Grant
    Filed: May 17, 2017
    Date of Patent: May 5, 2020
    Assignee: BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Song Meng, Fei Yang, Danna Song
  • Patent number: 10643535
    Abstract: A driving method for preventing image sticking of a display panel (805) upon shutdown, and a display device (800). The method includes: receiving a shutdown signal (S01, S16); and adjusting driving signals of a sub-pixel circuit (708, 810) of the display panel (805), so as to reduce the voltage difference between a gate electrode and a source electrode of a driving transistor (T1) of the sub-pixel circuit, and hence allowing the display panel (805) to enter an image sticking prevention mode (S02, S17). The method can prevent image sticking of the display panel (805) at the time of shutdown and hence improve the display quality.
    Type: Grant
    Filed: August 29, 2019
    Date of Patent: May 5, 2020
    Assignee: BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Fei Yang, Song Meng, Hongjun Xie, Quanhu Li, Yue Wu, Yu Wang
  • Patent number: 10629124
    Abstract: A pixel driving circuit, a pixel driving method, an array substrate, a display device, and a display panel are disclosed. The pixel driving circuit includes a switching subcircuit, a plurality of clock signal lines, a data writing subcircuit and a driving subcircuit.
    Type: Grant
    Filed: May 19, 2017
    Date of Patent: April 21, 2020
    Assignee: BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Quanhu Li, Yongqian Li, Pan Xu, Yu Wang, Song Meng, Fei Yang, Baoxia Zhang, Cuili Gai, Ling Wang, Yicheng Lin, Kun Cao, Longyan Wang, Yue Wu
  • Publication number: 20200118492
    Abstract: A pixel compensation method includes: detecting driving transistors of pixels to obtain present characteristic values of the driving transistors of the pixels; extracting historical compensation characteristic values of the driving transistors of the pixels obtained in a previous display cycle of a screen; calculating a present compensation characteristic value of at least one driving transistor of the pixels according to a present characteristic value and a historical compensation characteristic value corresponding to the driving transistor of the pixels; and compensating a corresponding pixel according to the present compensation characteristic value of the driving transistor of the pixels.
    Type: Application
    Filed: December 12, 2019
    Publication date: April 16, 2020
    Inventors: Song MENG, Zhongyuan WU
  • Publication number: 20200105191
    Abstract: Embodiments of the present disclosure provide a data signal compensation method for a pixel circuit, including: inputting a test signal to the data signal line, and detecting a real-time voltage at the first node after a first preset time elapses; comparing the real-time voltage with a preset voltage, and in response to the real-time voltage being deviated from the preset voltage, adjusting an initial compensation value for a mobility, so as to make the real-time voltage be consistent with the preset voltage, wherein the preset voltage is set by obtaining an initial threshold voltage for the driving transistor; generating a compensation test signal and inputting the compensation test signal to the data signal line; and generating a test signal, inputting the generated test signal to the data signal line, and sensing a first voltage at the first node after a first preset time elapses as the preset voltage.
    Type: Application
    Filed: April 26, 2019
    Publication date: April 2, 2020
    Inventors: Yi Chen, Fei Yang, Song Meng
  • Patent number: 10593265
    Abstract: A compensation circuit and a manufacturing method thereof, a pixel circuit, a compensation device and a display device are disclosed. The OLED compensation circuit includes at least two sense transistors, the at least two sense transistors are in one-to-one correspondence with at least two sub-pixels in a pixel, and a first electrode of each of the sense transistors is electrically connected to a driving transistor of corresponding one of the sub-pixels; a magnitude relationship between channel width-to-length ratios of driving transistors of any two sub-pixels of the at least two sub-pixels is identical with a magnitude relationship between channel width-to-length ratios of two sense transistors corresponding to the two sub-pixels.
    Type: Grant
    Filed: January 16, 2018
    Date of Patent: March 17, 2020
    Assignee: BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Quanhu Li, Song Meng
  • Publication number: 20200074934
    Abstract: The present disclosure provides a source driver, a display device, and a signal transmission method, relating to the field of display technology. The source driver is configured to receive a first data signal from a timing controller, wherein the first data signal carries a control command; and transmit, under control of the control command, a reference clock signal and a sensing data signal to the timing controller simultaneously, wherein the sensing data signal is received by the timing controller under control of the reference clock signal.
    Type: Application
    Filed: April 18, 2019
    Publication date: March 5, 2020
    Inventors: Fei YANG, Xiaolong WEI, Lirong WANG, Song MENG, Yi CHEN
  • Publication number: 20200066208
    Abstract: The present disclosure provides a compensation method for pixel circuit, a pixel circuit, and a display device. The pixel circuit includes a data writing circuit, a driving circuit, a sensing circuit, and an energy storage circuit, the compensation method includes: in a charging stage, acquiring a voltage of the second node by the sensing circuit, adjusting a data voltage outputted by the data writing circuit to the first node based on the acquired voltage of the second node, and charging the energy storage circuit by using the adjusted data voltage; and in a compensation stage, compensating characteristic parameters of the driving circuit by the charged energy storage circuit.
    Type: Application
    Filed: June 26, 2019
    Publication date: February 27, 2020
    Applicant: BOE TECHNOLOGY GROUP CO., LTD.
    Inventor: Song MENG
  • Patent number: 10573245
    Abstract: A shift register unit and a driving method thereof, shift register and display device. The shift register unit including an input circuit (P1), a pull-down control circuit (P2), a pull-up control circuit (P3), a pull-up circuit (P4) and a pull-down circuit (P5); wherein the input circuit (P1) is connected to a first trigger signal end (STU), a first clock signal end (CLK1), a power level end (VGL) and a pull-up control node (Q), and is for utilizing a bootstrap effect to transfer a signal of the first trigger signal end (STU) to the pull-up control node (Q) without a threshold voltage loss. The shift register unit is for use in a display device, and resolves the problem of a display device having a non-uniform display, resulting in a poor displaying effect of a display device.
    Type: Grant
    Filed: October 18, 2016
    Date of Patent: February 25, 2020
    Assignee: BOE Technology Group Co., Ltd.
    Inventors: Quanhu Li, Yongqian Li, Song Meng
  • Publication number: 20200036001
    Abstract: Provided are electrodes for use in electrochemical cells and active material components used to form these electrodes. Also provided are methods of forming these active material components as well as methods of forming these electrodes. An electrode comprises a current collector and an active layer, comprising active material structures and an inorganic conductive layer. The inorganic conductive layer coats and binds together these active material structures. Furthermore, the inorganic conductive layer also provides adhesion of the active layer to the current collector. The inorganic conductive layer has an electronic conductivity of at least 104 S/m and provides an electronic path among the active material structures and, in some examples, between the active material structures and the current collector. In some embodiments, the same inorganic conductive layer shared by multiple active material structures.
    Type: Application
    Filed: July 17, 2019
    Publication date: January 30, 2020
    Applicant: GRU Energy Lab Inc.
    Inventors: Song Han, Sa Zhou, Xiaohua Liu, Xinghua Meng
  • Publication number: 20200005711
    Abstract: A driving method for preventing image sticking of a display panel (805) upon shutdown, and a display device (800). The method includes: receiving a shutdown signal (S01, S16); and adjusting driving signals of a sub-pixel circuit (708, 810) of the display panel (805), so as to reduce the voltage difference between a gate electrode and a source electrode of a driving transistor (T1) of the sub-pixel circuit, and hence allowing the display panel (805) to enter an image sticking prevention mode (S02, S17). The method can prevent image sticking of the display panel (805) at the time of shutdown and hence improve the display quality.
    Type: Application
    Filed: August 29, 2019
    Publication date: January 2, 2020
    Inventors: Fei YANG, Song MENG, Hongjun XIE, Quanhu LI, Yue WU, Yu WANG
  • Patent number: 10446077
    Abstract: A driving method for preventing image sticking of a display panel upon shutdown, and a display device. The method includes: receiving a shutdown signal; and adjusting driving signals of a sub-pixel circuit of the display panel, so as to reduce the voltage difference between a gate electrode and a source electrode of a driving transistor of the sub-pixel circuit, and hence allowing the display panel to enter an image sticking prevention mode. The method can prevent image sticking of the display panel at the time of shutdown and hence improve the display quality.
    Type: Grant
    Filed: December 9, 2016
    Date of Patent: October 15, 2019
    Assignee: BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Fei Yang, Song Meng, Hongjun Xie, Quanhu Li, Yue Wu, Yu Wang
  • Publication number: 20190259327
    Abstract: A compensation circuit and a manufacturing method thereof, a pixel circuit, a compensation device and a display device are disclosed. The OLED compensation circuit includes at least two sense transistors, the at least two sense transistors are in one-to-one correspondence with at least two sub-pixels in a pixel, and a first electrode of each of the sense transistors is electrically connected to a driving transistor of corresponding one of the sub-pixels; a magnitude relationship between channel width-to-length ratios of driving transistors of any two sub-pixels of the at least two sub-pixels is identical with a magnitude relationship between channel width-to-length ratios of two sense transistors corresponding to the two sub-pixels.
    Type: Application
    Filed: January 16, 2018
    Publication date: August 22, 2019
    Applicant: BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Quanhu LI, Song MENG
  • Publication number: 20190235136
    Abstract: The present disclosure provides a display device and a vehicle, and relate to the field of display technologies. When the present disclosure is applied to a vehicle, a driver and a passenger may see different images, and thus user experience is enhanced. A display device includes: a display panel and a light adjusting structure arranged at a light exiting side of the display panel. The light adjusting structure is configured to adjust a direction of exit light from the display panel, such that first images displayed by all first display units in the display panel and second images displayed by all second display units in the display panel are respectively transmitted to a first visible area and a second visible area.
    Type: Application
    Filed: October 31, 2018
    Publication date: August 1, 2019
    Inventors: Song LIU, Jinhui CHENG, Boxiao LAN, Hengyu YAN, Zhiming MENG