Patents by Inventor Chih-Jen Cheng

Chih-Jen Cheng 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: 10970514
    Abstract: Provided are a compensation structure and a driving method thereof, a display panel, and a display device. The compensation structure includes a photoelectric sensing circuit, a fingerprint recognition circuit and a compensation circuit. The photoelectric sensing circuit is configured to respectively generate a first electric signal and a second electric signal according to received first optical signal and second optical signal. The fingerprint recognition circuit is configured to be connected to the photoelectric sensing circuit to receive the first electric signal, and to employ the first electric signal to determine a fingerprint pattern. The compensation circuit is configured to be connected to the photoelectric sensing circuit to receive the second electric signal, and to employ the second electric signal to perform optical compensation so as to adjust the first electric signal.
    Type: Grant
    Filed: May 24, 2019
    Date of Patent: April 6, 2021
    Assignee: BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Xueyou Cao, Haisheng Wang, Xiaoliang Ding, Chih Jen Cheng, Yanling Han, Wei Liu, Pengpeng Wang, Ping Zhang
  • 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: 10923507
    Abstract: An array substrate includes: a plurality of pixel units arranged in an array, selection lines, a reset circuit and readout circuits. Second terminals of transistors in pixel units belonging to a same column are connected to at least two of the read lines, so that a part of the pixel units are connected to a same read line, and another part of the pixel units are connected to the other one of the at least two of the read lines. For each column of the pixel units, each of the read lines is connected to one of the readout circuits corresponding to the column of the pixel units through a switching element; and for each column of the pixel units, each of the read lines is connected to the reset circuit through a switching element.
    Type: Grant
    Filed: December 13, 2018
    Date of Patent: February 16, 2021
    Assignee: BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Chih Jen Cheng, Pengpeng Wang, Wei Liu, Xueyou Cao, Yanling Han, Ping Zhang, Xiaoliang Ding
  • Patent number: 10914977
    Abstract: A display panel includes a first substrate, a second substrate disposed opposing the first substrate, a first transparent layer, a first light shield layer, and a photosensitive element layer located between the first substrate and the second substrate. The first transparent layer, the first light shield layer, and the photosensitive element layer are sequentially disposed along a direction from the first substrate to the second substrate. The first transparent layer includes a plurality of protrusions extending toward the first substrate. The first light shield layer includes a plurality of first openings, and the photosensitive element layer includes a plurality of photosensitive elements for acquiring a fingerprint image. The protrusions, the first openings, and the photosensitive elements have one-to-one correspondence, and have at least partially overlapped orthographic projections on the second substrate.
    Type: Grant
    Filed: June 3, 2020
    Date of Patent: February 9, 2021
    Assignee: BEIJING XIAOMI MOBILE SOFTWARE CO., LTD.
    Inventors: Che-jui Hsu, Chih-jen Cheng
  • Patent number: 10915775
    Abstract: Disclosed are a noise detection circuit, a noise detection method, and a print recognition apparatus. The noise detection circuit includes a differential amplifier, an analog-to-digital converter, a control circuit, and a first switch circuit; the control circuit is configured to control the first switch circuit to make the first input signal terminal connected with the reference signal terminal or grounded, and to make the second input signal terminal connected with the reference signal terminal or grounded, and when the first input signal terminal is connected with the reference signal terminal or grounded, and the second input signal terminal is connected with the reference signal terminal or grounded, to analyze the digital signal output by the analog-to-digital converter to determine a source of noise of the print recognition apparatus.
    Type: Grant
    Filed: September 14, 2018
    Date of Patent: February 9, 2021
    Assignee: BOE Technology Group Co., Lid.
    Inventors: Pengpeng Wang, Haisheng Wang, Xiaoliang Ding, Chih-Jen Cheng, Yanling Han, Wei Liu, Xueyou Cao, Ping Zhang
  • Patent number: 10914642
    Abstract: The embodiments of the present disclosure relate to a device for temperature detection, including a delay unit including an odd number of inverters coupled end to end, a switching transistor having a control electrode coupled to an output end of the delay unit, a first electrode coupled to an operating voltage node of the device, and a second electrode coupled to an input end of the delay unit, a first capacitor having a first end coupled to the input end of the delay unit, and a second end coupled to the first electrode of the switching transistor or a ground node of the device, and a temperature sensitive transistor having a control electrode coupled to a bias voltage end of the device, a first electrode coupled to the input end of the delay unit, and a second electrode coupled to the ground node of the device.
    Type: Grant
    Filed: January 2, 2018
    Date of Patent: February 9, 2021
    Assignee: BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Lijun Zhao, Haisheng Wang, Yingming Liu, Rui Xu, Changfeng Li, Yanan Jia, Pengpeng Wang, Chih Jen Cheng
  • Patent number: 10866648
    Abstract: The present disclosure relates to a display substrate. The display substrate includes an active region and a non-active region, and a depth camera is disposed in the non-active region. The depth camera includes at least one receiving unit and a plurality of diffractive units. At least a part of the diffractive units includes an infrared light emitting device disposed on the substrate that emits infrared light. The part of the diffractive units includes a diffractive optical element disposed on the infrared light emitting device and used to transmit the infrared light emitted from the infrared light emitting device to an object. The receiving unit includes an infrared photosensitive device disposed on the substrate and used to receive the infrared light reflected by the object.
    Type: Grant
    Filed: October 24, 2018
    Date of Patent: December 15, 2020
    Assignee: BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Pengpeng Wang, Haisheng Wang, Xiaoliang Ding, Chih Jen Cheng, Yanling Han, Yangbing Li, Xueyou Cao, Wei Liu, Ping Zhang
  • Patent number: 10868990
    Abstract: An active pixel sensor, a driving method thereof, an imager and an electronic device are disclosed. The active pixel sensor includes: a photosensitive element, configured to convert a received light signal into an electrical signal; a follower circuit, connected with the photosensitive element and configured to convert the electrical signal into an output voltage, the follower circuit including a source follower transistor; and an adjustment circuit, connected with the follower circuit and configured to collect the output voltage of the follower circuit and to adjust a bias current of the source follower transistor according to the output voltage, so as to adjust the output voltage to a preset range.
    Type: Grant
    Filed: January 30, 2018
    Date of Patent: December 15, 2020
    Assignee: BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Chih Jen Cheng, Pengpeng Wang, Wei Liu, Xiaoliang Ding, Rui Xu, Changfeng Li
  • Patent number: 10805565
    Abstract: Embodiments of the present disclosure provide a CMOS image sensor, and a pixel circuit and a driving method thereof. The pixel circuit includes: a collection circuit configure to collect an incident light and convert a collected optical signal into an electric signal; a source follower circuit configured to output the received electric signal to a collection signal output terminal under the control of scan lines; and a voltage conversion circuit, configured to be connected to the collection signal output terminal through a read signal line, convert a voltage at the collection signal output terminal to an output voltage, and output the output voltage at a voltage output terminal, wherein the output voltage is within an operating voltage range of an image processor.
    Type: Grant
    Filed: October 20, 2017
    Date of Patent: October 13, 2020
    Assignee: BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Chih Jen Cheng, Xiaoliang Ding
  • Patent number: 10802630
    Abstract: The disclosure discloses an array substrate, a method for fabricating the same, a display panel, and a display device, and the array substrate includes: a base substrate, a pressure-sensitive component, a plurality of dual-gate transistors, and a plurality of pixel transistors, where the pressure-sensitive component includes a first electrode layer, a pressure-sensitive layer, and a second electrode layer which are arranged on the base substrate in that order, and the second electrode layer includes a plurality of second electrodes arranged corresponding to the respective dual-gate transistors in a one-to-one manner; and the dual-gate transistors and the pixel transistors are arranged above the second electrode layer, and each of the plurality of second electrodes is electrically connected with a bottom-gate electrode in a corresponding dual-gate transistor, so that a pressure can be detected.
    Type: Grant
    Filed: January 11, 2018
    Date of Patent: October 13, 2020
    Assignee: BOE TECHNOLOGY GROUP CO., LTD
    Inventors: Yuzhen Guo, Xue Dong, Haisheng Wang, Chun-wei Wu, Xueyou Cao, Yingming Liu, Xiaoliang Ding, Chih-Jen Cheng
  • Patent number: 10802596
    Abstract: A display device, a self-luminous display panel and a gesture recognition method are provided. The display device includes a self-luminous display panel, an infrared light source, at least one camera device, and an image processing device. The image processing device is coupled to the at least one camera device and configured to perform gesture recognition based on a plurality of successive infrared images and a plurality of successive visible light images of an operation body taken within a same period of time.
    Type: Grant
    Filed: June 4, 2018
    Date of Patent: October 13, 2020
    Assignee: BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Xueyou Cao, Xue Dong, Haisheng Wang, Xiaoliang Ding, Chih Jen Cheng, Pengpeng Wang, Wei Liu, Yanling Han, Ping Zhang
  • Patent number: 10789443
    Abstract: A recognition device, a fingerprint recognition device and a fingerprint recognition apparatus are provided, and the fingerprint recognition device includes: a detection substrate provided with fingerprint detector units; a light barrier which is provided at a side, provided with the fingerprint detector units, of the detection substrate, and provided with light through holes corresponding to the fingerprint detector units; a cover plate which is provided at a side, facing away from the detection substrate, of the light barrier, and includes a light exit surface facing the light barrier and a touch surface facing away from the light barrier; and a light source for emitting light to the cover plate. Each fingerprint detector unit is configured to output an electrical signal according to an intensity of light incident on the fingerprint detector unit, after the light passes through the light through hole corresponding to the fingerprint detector unit.
    Type: Grant
    Filed: July 23, 2018
    Date of Patent: September 29, 2020
    Assignee: BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Xueyou Cao, Haisheng Wang, Xiaoliang Ding, Chih Jen Cheng, Yanling Han, Pengpeng Wang, Wei Liu, Ping Zhang, Xue Dong, Jing Lv
  • Publication number: 20200285343
    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 according to the sensing signal generated by each of the light receivers (121), thereby realizing in
    Type: Application
    Filed: November 30, 2017
    Publication date: September 10, 2020
    Inventors: Xiaoliang DING, Haisheng WANG, Yingming LIU, Wei LIU, Chih-Jen CHENG, Pengpeng WANG, Xueyou CAO, Ping ZHANG, Chun-Wei WU
  • Patent number: 10761637
    Abstract: A pressure sensing detection circuit and a driving method thereof, an electronic device. The pressure sensing detection circuit includes: an excitation signal circuit, configured to output an alternating current voltage signal; a pressure sensing circuit, configured to sense a magnitude of an external pressure and output a detection voltage signal under excitation of the alternating current voltage signal; and a phase detection circuit, configured to detect a phase change value of the detection voltage signal and convert the phase change value into a voltage value.
    Type: Grant
    Filed: March 12, 2018
    Date of Patent: September 1, 2020
    Assignee: BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Pengpeng Wang, Haisheng Wang, Xiaoliang Ding, Chih Jen Cheng, Yanling Han, Ping Zhang, Xueyou Cao, Wei Liu, Yuzhen Guo
  • Patent number: 10763574
    Abstract: A display device, a color filter substrate, a mobile terminal and a driving method thereof are provided. The display device includes a first substrate, provided with a drive device array for controlling display; a second substrate opposite to the first substrate, with a shield layer disposed on a side of the second substrate facing the first substrate; and an antenna device on the second substrate, located on a side of the shield layer away from the first substrate.
    Type: Grant
    Filed: March 16, 2018
    Date of Patent: September 1, 2020
    Assignee: BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Xueyou Cao, Jing Lv, Haisheng Wang, Chun Wei Wu, Xiaoliang Ding, Yingming Liu, Chih Jen Cheng, Yanling Han, Wei Liu, Weibing Gong, Ping Zhang
  • Publication number: 20200242321
    Abstract: Provided are a compensation structure and a driving method thereof, a display panel, and a display device. The compensation structure includes a photoelectric sensing circuit, a fingerprint recognition circuit and a compensation circuit. The photoelectric sensing circuit is configured to respectively generate a first electric signal and a second electric signal according to received first optical signal and second optical signal. The fingerprint recognition circuit is configured to be connected to the photoelectric sensing circuit to receive the first electric signal, and to employ the first electric signal to determine a fingerprint pattern. The compensation circuit is configured to be connected to the photoelectric sensing circuit to receive the second electric signal, and to employ the second electric signal to perform optical compensation so as to adjust the first electric signal.
    Type: Application
    Filed: May 24, 2019
    Publication date: July 30, 2020
    Applicant: BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Xueyou CAO, Haisheng WANG, Xiaoliang DING, Chih Jen CHENG, Yanling HAN, Wei LIU, Pengpeng WANG, Ping ZHANG
  • Patent number: 10691210
    Abstract: A touch panel, an electronic device, and a driving method thereof are provided. The touch panel includes: a substrate and a tactile feedback layer, a touch detection circuit and a plurality of driving electrodes located on the substrate. The tactile feedback layer is configured to adjust hardness thereof under control of the driving electrode, the touch detection circuit is configured to provide a plurality of touch detection points, each of the touch detection points corresponding to at least one of the driving electrodes.
    Type: Grant
    Filed: December 12, 2017
    Date of Patent: June 23, 2020
    Assignee: BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Yanling Han, Haisheng Wang, Xiaoliang Ding, Xue Dong, Jing Lv, Chih Jen Cheng, Wei Liu, Pengpeng Wang, Xueyou Cao, Ping Zhang, Yanan Jia, Chun Wei Wu
  • Patent number: 10678043
    Abstract: The present disclosure relates to a display panel, a device and a method for controlling the same. The display panel includes: a substrate; a detecting light transmitter, a detecting light receiver, a first optical element and a second optical element which are disposed on the substrate. The first optical element is configured to diverge light emitted from the detecting light transmitter and the second optical element is configured to converge the reflected divergent light to the detecting light receiver.
    Type: Grant
    Filed: April 4, 2018
    Date of Patent: June 9, 2020
    Assignee: BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Xiaoliang Ding, Xue Dong, Haisheng Wang, Yingming Liu, Pengpeng Wang, Ping Zhang, Yanling Han, Chih Jen Cheng, Wei Liu, Xueyou Cao
  • Patent number: 10671218
    Abstract: Disclosed floating touch control panel includes a substrate, a modulated light source, a read sub-circuit, an output sub-circuit, an ultrasonic wave sensing unit and a light sensing unit; the ultrasonic wave sensing unit is configured to transmit an ultrasonic wave to a touch control side, to convert an ultrasonic wave reflected back from the touch control side into an electric signal and then provide it to a first node; the light sensing unit is configured to convert a modulated light reflected from the touch control side into an electric signal and then provide it to the first node; the read sub-circuit is configured to output a touch control signal to the output sub-circuit according to a potential of the first node; the output sub-circuit is configured to be controlled by a corresponding first touch control scan line to provide a touch control read line with the received touch control signal.
    Type: Grant
    Filed: September 21, 2017
    Date of Patent: June 2, 2020
    Assignee: BOE Technology Group Co., Ltd.
    Inventors: Yingming Liu, Xue Dong, Haisheng Wang, Xiaoliang Ding, Chun Wei Wu, Chih Jen Cheng, Yuzhen Guo, Yanling Han
  • Patent number: 10656768
    Abstract: A touch display panel and a manufacturing method thereof are provided. The touch display panel includes a substrate, a conductor, a first pressure sensing electrode and a second pressure sensing electrode. The conductor is stacked under the substrate, and the conductor is not connected to a bias. The first pressure sensing electrode is disposed on the substrate and disposed above the conductor. A compression zone exists between the first pressure sensing electrode and the conductor, so as to form a first pressure sensing capacitor. The second pressure sensing electrode is disposed on the substrate and disposed above the conductor. The compression zone exists between the second pressure sensing electrode and the conductor, so as to form a second pressure sensing capacitor connected in series with the first pressure sensing capacitor.
    Type: Grant
    Filed: July 12, 2016
    Date of Patent: May 19, 2020
    Assignee: Novatek Microelectronics Corp.
    Inventors: He-Wei Huang, Chih-Jen Cheng