Patents by Inventor Yingming Liu

Yingming Liu 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: 11003886
    Abstract: At least one embodiment of this disclosure provides a display apparatus for solving the problem of a low identification precision due to a relatively large distance between the finger and the fingerprint identification device. The display apparatus comprises a display panel and at least one fingerprint identification device. Each fingerprint identification device comprises a plurality of identification units arranged in an array, each identification unit being provided with a photosensitive element. The photosensitive element is used for performing photoelectric conversion of incident light. The fingerprint identification device further comprises a collimating filter layer arranged on a light entrance surface of the photosensitive element.
    Type: Grant
    Filed: January 4, 2018
    Date of Patent: May 11, 2021
    Assignee: BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Rui Xu, Xue Dong, Haisheng Wang, Yingming Liu, Pinchao Gu, Changfeng Li, Qingrong Ren
  • Publication number: 20210134222
    Abstract: A pixel circuit includes a driving sub-circuit and a photosensitive detection circuit. The driving sub-circuit is coupled to a self-luminescent device. The driving sub-circuit is configured to drive the self-luminescent device to emit light. The photosensitive detection circuit is configured to detect a luminance of the self-luminescent device, and transmit an electrical signal for characterizing the luminance of the self-luminescent device to a signal readout terminal.
    Type: Application
    Filed: March 6, 2019
    Publication date: May 6, 2021
    Applicant: BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Xiaoliang DING, Xue DONG, Haisheng WANG, Yingming LIU, Wei LIU, Changfeng LI
  • Publication number: 20210134896
    Abstract: A display panel includes a sub-pixel array and a plurality of photosensitive units. The sub-pixel array includes as first sub-pixel, a second sub-pixel and a third sub-pixel that are capable of emitting light of different colors. The plurality of photosensitive units are disposed under a light-emitting surface of the sub-pixel array. Each of the plurality of photosensitive units includes a photosensitive device, and the photosensitive device includes a photosensitive layer; and an orthographic projection of the photosensitive layer in the photosensitive device on a panel surface of the display panel has overlapping regions with orthographic projections of the first sub-pixel, the second sub-pixel and the third sub-pixel on the panel surface of the display panel.
    Type: Application
    Filed: December 25, 2019
    Publication date: May 6, 2021
    Applicant: BOE Technology Group Co., Ltd.
    Inventors: Yuzhen GUO, Xiaochuan CHEN, Lei WANG, Haisheng WANG, Yingming LIU, Lijun ZHAO, Changfeng LI
  • Patent number: 10997387
    Abstract: Provided is a fingerprint recognition circuit, including a resetting sub-circuit, a fingerprint sensing sub-circuit, a signal acquiring sub-circuit, and a driving sub-circuit, the resetting sub-circuit is connected to the reading node, the resetting port, a first port for resetting the reading node; the fingerprint sensing sub-circuit is connected to the reading node for acquiring fingerprint information, converting it into a detection signal to output to the reading node; the signal acquiring sub-circuit is connected to the reading node, the driving sub-circuit and a power port to output a signal of the reading node to the driving sub-circuit; the driving sub-circuit is connected to a reading port, the signal acquiring sub-circuit, an output port and a second port, outputs the signal output by the signal acquiring sub-circuit through the reading port in a fingerprint recognition stage, outputs the signal of the reading port to the output port in a display stage.
    Type: Grant
    Filed: February 24, 2018
    Date of Patent: May 4, 2021
    Assignee: BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Changfeng Li, Haisheng Wang, Yingming Liu, Xiaoliang Ding, Rui Xu, Pengpeng Wang, Wei Liu, Pinchao Gu, Yunke Qin, Yuzhen Guo, Pengcheng Lu
  • Publication number: 20210124441
    Abstract: Disclosed are a display substrate, a display device and a detection method by using a display device. The display substrate includes at least one sub-pixel. the at least one sub-pixel includes a first region and a second region, and the at least one sub-pixel includes a light emitting element which is arranged in the first region, and a pixel circuit structure and a photosensitive stucture which are arranged in the second region, the pixel circuit structure and the photosensitive structure are stacked, and the photosensitive structure is closer to a light exiting side of the display substrate than the pixel circuit structure.
    Type: Application
    Filed: October 23, 2019
    Publication date: April 29, 2021
    Inventors: Xiaoliang DING, Haisheng WANG, Yingming LIU, Pengpeng WANG, Likai DENG, Yangbing LI, Xueyou CAO, Ping ZHANG
  • Publication number: 20210124896
    Abstract: A texture detection circuit, a charging circuit, driving methods and a touch display panel are provided. The texture detection circuit includes a first photosensitive element and a switching sub-circuit. A first electrode of the first photosensitive element is connected with a signal readout line. A second electrode of the first photosensitive element is connected with the switching sub-circuit. The switching sub-circuit is connected with a reverse power end and a charging sub-circuit, and is configured to switch a connection state of the second electrode of the first photosensitive element between a first connection state and a second connection state. The first connection state is a state in which the second electrode of the first photosensitive element is connected with the reverse power end. The second connection state is a state in which the second electrode of the first photosensitive element is connected with the charging sub-circuit.
    Type: Application
    Filed: May 25, 2020
    Publication date: April 29, 2021
    Inventors: Xiaoliang Ding, Haisheng Wang, Lei Wang, Yunke Qin, Yingming Liu
  • Patent number: 10991735
    Abstract: The present disclosure provides an optical detection pixel unit, an optical detection pixel circuit, an optical detection method and a display device. The optical detection pixel unit comprise a photosensitive element and a detection transistor, wherein the photosensitive element has a first electrode connected with a photovoltage terminal, and a second electrode connected with a gate of the detection transistor; the photosensitive element is configured to detect an optical signal under the control of the photovoltage terminal; and the detection transistor has a first electrode connected with a detection voltage line, and a second electrode connected with a reading line.
    Type: Grant
    Filed: June 27, 2019
    Date of Patent: April 27, 2021
    Assignee: BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Xiaoliang Ding, Xue Dong, Haisheng Wang, Yingming Liu, Chihjen Cheng, Pengpeng Wang, Yanling Han, Wei Liu
  • Patent number: 10979005
    Abstract: Embodiments of the present disclosure provide a current amplification circuitry and a driving method thereof, and a fingerprint detection device. The current amplification circuitry includes a voltage control circuit, a plurality of first current amplification circuits, and a second current amplification circuit. The voltage control circuit provides a voltage control signal to the plurality of first current amplification circuits. The first current amplification circuit includes a current mirror, and the current mirror is coupled to a voltage input terminal, the voltage control circuit, and a first input terminal of the second current amplification circuit. The first current amplification circuit amplifies a current from the voltage input terminal according to the voltage control signal provided by the voltage control circuit, and provides the amplified current to the second current amplification circuit.
    Type: Grant
    Filed: May 31, 2018
    Date of Patent: April 13, 2021
    Assignee: BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Xiaoliang Ding, Haisheng Wang, Yingming Liu, Xueyou Cao, Ping Zhang, Yanling Han
  • Patent number: 10976854
    Abstract: Embodiments of the present disclosure provide a force touch display panel, a detection method thereof, and a display apparatus. The force touch display panel includes: a substrate; a display structure disposed in a display area on the substrate; and a force common electrode layer, a piezoelectric material layer, and a force sense electrode layer, which are stacked in sequence over the display structure. The force sense electrode layer includes a force sense electrode configured for identifying different forces, and the force sense electrode additionally serves as a touch detection electrode configured for identifying a touch operation.
    Type: Grant
    Filed: June 15, 2018
    Date of Patent: April 13, 2021
    Assignee: BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Yuzhen Guo, Xue Dong, Haisheng Wang, Yingming Liu, Xiaoliang Ding, Xueyou Cao, Lijun Zhao, Chihjen Cheng
  • Patent number: 10977476
    Abstract: A dermatoglyphics data acquisition device, an acquisition method thereof and a display device are disclosed. The acquisition method of dermatoglyphics data includes: detecting a touch region of a dermatoglyphics on a touch device by a capacitive touch control circuit; selecting a touch center region in the touch region and selecting a characteristic region in the touch center region by a controller, according to a signal amount distribution of a touch signal generated by dermatoglyphics contact in the touch region, and determining the characteristic region as a dermatoglyphics scan region by the controller; and scanning a dermatoglyphics in the dermatoglyphics scan region and generating the dermatoglyphics data by a dermatoglyphics identification circuit.
    Type: Grant
    Filed: December 31, 2019
    Date of Patent: April 13, 2021
    Assignees: BEIJING BOE OPTOELECTRONICS TECHNOLOGY CO., LTD., BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Yingming Liu, Xue Dong, Haisheng Wang, Xiaochuan Chen, Shengji Yang, Ming Yang, Wei Liu, Hongjuan Liu, Qian Wang
  • Patent number: 10969613
    Abstract: A fingerprint identification display device, includes: a display panel having a plurality of display units defined therein, and at least some of the plurality of display units are located in a fingerprint identification region, each of which comprises display subpixels and an identification subpixel; a light guide plate; one or more light emitting components configured to make detection light emitted therefrom travel in the light guide plate in a total reflection manner; a first polarizer comprising a first region and a second region with perpendicular polarization directions, and a second polarizer comprising a third region and a fourth region with perpendicular polarization directions, wherein the first region and the third region correspond to the display subpixels and have perpendicular polarization directions, and the second region and the fourth region correspond to the identification subpixel; and a photosensitive sensing unit disposed at the second polarizer, and corresponding to the identification su
    Type: Grant
    Filed: September 26, 2017
    Date of Patent: April 6, 2021
    Assignee: BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Xiaoliang Ding, Haisheng Wang, Yingming Liu, Rui Xu, Wei Liu, Pengpeng Wang
  • Publication number: 20210088821
    Abstract: A fingerprint identification display device, includes: a display panel having a plurality of display units defined therein, and at least some of the plurality of display units are located in a fingerprint identification region, each of which comprises display subpixels and an identification subpixel; a light guide plate; one or more light emitting components configured to make detection light emitted therefrom travel in the light guide plate in a total reflection manner; a first polarizer comprising a first region and a second region with perpendicular polarization directions, and a second polarizer comprising a third region and a fourth region with perpendicular polarization directions, wherein the first region and the third region correspond to the display subpixels and have perpendicular polarization directions, and the second region and the fourth region correspond to the identification subpixel; and a photosensitive sensing unit disposed at the second polarizer, and corresponding to the identification su
    Type: Application
    Filed: September 26, 2017
    Publication date: March 25, 2021
    Inventors: Xiaoliang DING, Haisheng WANG, Yingming LIU, Rui XU, Wei LIU, Pengpeng WANG
  • Patent number: 10957746
    Abstract: The present disclosure relates to the field of display technologies, and provides a touch substrate and a display panel. Specifically, the touch substrate comprises: a pixel array and a light sensing device array arranged oppositely; a light shielding layer between the pixel array and the light sensing device array; and a lens array on a side of the light shielding layer remote from the light sensing device array. The pixel array comprises a plurality of pixel units, each pixel unit comprising a plurality of sub-pixels. The lens array comprises a plurality of lens units. The light sensing device array comprises a plurality of light sensing devices. The light shielding layer is provided with a plurality of via holes.
    Type: Grant
    Filed: January 8, 2018
    Date of Patent: March 23, 2021
    Assignee: BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Changfeng Li, Xue Dong, Haisheng Wang, Yingming Liu, Xiaoliang Ding, Rui Xu, Pinchao Gu, Pengcheng Lu
  • Patent number: 10956702
    Abstract: Disclosed are an apparatus for recognizing a fingerprint, a display device, and the apparatus includes: a display panel, light sources, a supporting element, an optically-coupling element, a photo-detecting element on optical paths of the light sources, a processing element; the light sources, the supporting element are on side of a second surface of the display panel; the supporting element supports light sources so that light rays exiting light sources are incident obliquely onto the display panel; the optically-coupling element, the photo-detecting element are on the second surface; the photo-detecting element is on side of the optically-coupling element away from light sources; the optically-coupling element makes light rays emitted from light sources totally reflect in the display panel; the photo-detecting element detects exiting light after light rays exiting the light sources are reflected by the display panel, transmits detected signals to the processing element; the processing element determines a f
    Type: Grant
    Filed: May 29, 2019
    Date of Patent: March 23, 2021
    Assignee: BOE Technology Group Co., Ltd.
    Inventors: Lei Wang, Haisheng Wang, Yingming Liu, Xiaoliang Ding, Changfeng Li, Xiaoquan Hai
  • Publication number: 20210081634
    Abstract: A fingerprint recognition module and a driving method thereof, and a display device. The fingerprint recognition module includes a substrate, an electrode layer located on one side of the substrate, a piezoelectric film layer located on one side, away from the substrate, of the electrode layer, and a reference electrode layer located on one side, away from the electrode layer, of the piezoelectric film layer, wherein the electrode layer includes a plurality of receiving electrodes arranged in an array and a plurality of transmitting electrodes, and the receiving electrodes and the transmitting electrodes are insulated from each other and are spaced with each other.
    Type: Application
    Filed: March 30, 2020
    Publication date: March 18, 2021
    Inventors: Yingming Liu, Haisheng Wang, Xiaoliang Ding, Pengpeng Wang, Xiufeng Li, Yuzhen Guo, Ruituo Wang
  • Patent number: 10949025
    Abstract: The present disclosure provides an optical touch device and a manufacturing method thereof, a display and an electronic device, wherein the optical touch device comprises: a pixel array (11) that comprises a plurality of pixel sub-circuits (101) each of which comprises M first pixels (1011) and N second pixels (1012), wherein detection rays with a preset frequency are emitted by the second pixels (1012), where M and N are positive integers; a light receiving array (12) that comprises a plurality of light receivers (121) corresponding, at a one-to-one basis, to the plurality of pixel sub-circuits (101), wherein each of the light receivers (121) generates an sensing signal by receiving reflected rays of the detection rays emitted by a corresponding second pixel (1012); and a detection circuit (13) connected with the plurality of light receivers (121), wherein the detection circuit (13) performs touch positioning.
    Type: Grant
    Filed: November 30, 2017
    Date of Patent: March 16, 2021
    Assignee: BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Xiaoliang Ding, Haisheng Wang, Yingming Liu, Wei Liu, Chih-Jen Cheng, Pengpeng Wang, Xueyou Cao, Ping Zhang, Chun-Wei Wu
  • Patent number: 10949031
    Abstract: The disclosure provides a touch display substrate and a touch display device. The touch display substrate includes: a substrate; a plurality of ultrasonic sensors disposed on the substrate; and one ultrasonic generator disposed on the substrate. The ultrasonic generator has a plurality of openings, and at least one of the plurality of ultrasonic sensors is disposed in at least one of the openings.
    Type: Grant
    Filed: November 27, 2018
    Date of Patent: March 16, 2021
    Assignee: BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Yuzhen Guo, Xue Dong, Haisheng Wang, Chunwei Wu, Yingming Liu, Changfeng Li, Yanan Jia, Lijun Zhao, Yunke Qin, Pinchao Gu, Rui Xu
  • Publication number: 20210074227
    Abstract: Disclosed herein is an apparatus comprising: a first switch and a second switch; wherein the first switch is configured to apply a drive signal to a first electrode when the first switch receives a control signal; wherein the second switch is configured to electrically isolate the first electrode from a second electrode when the second switch receives the control signal; wherein the second switch is configured to short-circuit the first electrode to the second electrode when the second switch does not receive the control signal; wherein the first electrode and the second electrode face each other and are separated by a gap configured to accommodate a liquid droplet.
    Type: Application
    Filed: April 30, 2019
    Publication date: March 11, 2021
    Inventors: Ping ZHANG, Haisheng WANG, Xiaoliang DING, Yingming LIU, Xueyou CAO, Pengpeng WANG, Likai DENG, Pinchao GU, Yunke QIN
  • Patent number: 10942600
    Abstract: The present disclosure provides a sensor pixel, an ultrasonic sensor, an OLED display panel and an OLED display device, in which the sensor pixel includes a base substrate, a piezoelectric transducer and a sensor pixel circuit arranged on the base substrate; the energy sensor is connected to a first signal input terminal and the first node; the sensor pixel circuit includes a signal node control subcircuit for controlling the first node according to a signal of the reset signal terminal and a signal of the second signal input terminal, a drive subcircuit for providing a detection signal to the second node under the control of a signal of the first node, and a read subcircuit for providing a signal of the second node to the signal read line under the control of the read signal terminal.
    Type: Grant
    Filed: August 27, 2019
    Date of Patent: March 9, 2021
    Assignee: BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Xiaoliang Ding, Haisheng Wang, Yingming Liu, Xiaochuan Chen, Bo Chen, Feiteng Liu, Wenhui Li
  • Publication number: 20210060547
    Abstract: The present disclosure provides a micro-fluidic substrate, a micro-fluidic structure and a driving method thereof. The micro-fluidic substrate of the preset disclosure includes a substrate, and a plurality of driving electrodes on the substrate and configured to drive a droplet to move, the plurality of driving electrodes being in a same layer with a gap space between adjacent driving electrodes. The micro-fluidic substrate further includes: at least one auxiliary electrode on the substrate and configured to drive the droplet to move, an orthographic projection of the auxiliary electrode on the substrate at least partially overlapping with an orthographic projection of the gap space on the substrate, and the auxiliary electrode and the driving electrodes being in different layers.
    Type: Application
    Filed: July 24, 2019
    Publication date: March 4, 2021
    Inventors: Yingming LIU, Xue DONG, Haisheng WANG, Xiaochuan CHEN, Xiaoliang DING, Lei WANG, Changfeng LI, Pinchao GU