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).

  • Publication number: 20190205592
    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: Application
    Filed: July 23, 2018
    Publication date: July 4, 2019
    Inventors: Xueyou CAO, Haisheng WANG, Xiaoliang DING, Chih Jen CHENG, Yanling HAN, Pengpeng WANG, Wei LIU, Ping ZHANG, Xue DONG, Jing LV
  • Publication number: 20190206913
    Abstract: Embodiments of the present disclosure provides a light sensor, including: a first thin film transistor, having a first terminal connected to a first node, a second terminal receiving a first level signal, and a control terminal receiving a first control signal; a second thin film transistor, having a first terminal connected to the first node, a second terminal receiving a second level signal, and a control terminal receiving a second control signal; a voltage follower, having an input terminal connected to the first node, and an output terminal; the third thin film transistor, having a first terminal connected to the output terminal of the voltage follower, a second terminal connected to an input terminal of an output unit, and a control terminal receiving a third control signal; and the output unit, having an input terminal connected to the second terminal of the third thin film transistor, and an output terminal connected to an output terminal of the light sensor.
    Type: Application
    Filed: June 7, 2018
    Publication date: July 4, 2019
    Inventors: Xueyou Cao, Haisheng Wang, Xiaoliang Ding, Chih-Jen Cheng, Yanling Han, Wei Liu, Pengpeng Wang, Ping Zhang
  • Publication number: 20190198979
    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: Application
    Filed: March 16, 2018
    Publication date: June 27, 2019
    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: 20190179195
    Abstract: A display panel and a display device are provided in embodiments of the disclosure, the display panel having a display region and a non-display region surrounding the periphery of the display region, and comprising: a first display substrate; a second display substrate, which is arranged opposite to, aligned with and assembled together with the first display substrate; a signal shielding frame, in the non-display region and between the first display substrate and the second display substrate; and signal antennas within the signal shielding frame, the signal shielding frame being configured to shield at least an inward transmission of the signal from the signal antennas towards the display region, so as to enable merely an outward transmission of the signal from the signal antennas towards an outer side of the display panel.
    Type: Application
    Filed: February 13, 2018
    Publication date: June 13, 2019
    Inventors: Ping Zhang, Xue Dong, Haisheng Wang, Chun-Wei Wu, Xiaoliang Ding, Yanling Han, Xueyou Cao, Wei Liu, Yingming Liu, Yuzhen Guo, Pengpeng Wang, Chih-Jen Cheng, Rui Xu, Lijun Zhao, Yanan Jia, Changfeng Li, Yunke Qin, Pinchao Gu
  • Publication number: 20190163307
    Abstract: The present disclosure relates to a touch driving circuit. The touch driving circuit may include a driving transistor. A control terminal of the driving transistor is configured to receive a data signal. A first terminal of the driving transistor is configured to receive a power signal. A second terminal of the driving transistor is connected to a first electrode of a light emitting element in the touch panel. The touch driving circuit may include a touch electrode configured to transmit a touch signal. The touch electrode forms parasitic capacitance with a second electrode of the light emitting element. The touch driving circuit may include a control unit configured to transmit a compensation signal to the second terminal of the driving transistor in response to a control signal. The power signal, the data signal, the touch signal, and the compensation signal are synchronously modulated signals during a touch stage.
    Type: Application
    Filed: March 20, 2018
    Publication date: May 30, 2019
    Applicant: BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Chih Jen Cheng, Xiaoliang Ding, Changfeng Li, Pengpeng Wang, Wei Liu, Yanling Han, Xueyou Cao, Ping Zhang
  • Publication number: 20190129510
    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: Application
    Filed: October 24, 2018
    Publication date: May 2, 2019
    Inventors: Pengpeng Wang, Haisheng Wang, Xiaoliang Ding, Chih Jen Cheng, Yanling Han, Yangbing Li, Xueyou Cao, Wei Liu, Ping Zhang
  • Publication number: 20190114794
    Abstract: Embodiments of the present disclosure provide a method and a device for acquiring depth information, as well as a gesture recognition apparatus. The method includes: projecting an infrared spectrum to a target object; collecting the infrared spectrum reflected by the target object at different positions and generating a first infrared image and a second infrared image respectively; and processing the first infrared image and the second infrared image on a basis of infrared spectrum response characteristics to acquire the depth information of the target object.
    Type: Application
    Filed: March 7, 2018
    Publication date: April 18, 2019
    Inventors: Pengpeng Wang, Haisheng Wang, Xiaoliang Ding, Chih-Jen Cheng, Yanling Han, Wei Liu, Xueyou Cao, Ping Zhang
  • Publication number: 20190086659
    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: Application
    Filed: April 4, 2018
    Publication date: March 21, 2019
    Inventors: Xiaoliang DING, Xue DONG, Haisheng WANG, Yingming LIU, Pengpeng WANG, Ping ZHANG, Yanling HAN, Chih Jen CHENG, Wei LIU, Xueyou CAO
  • Publication number: 20190070602
    Abstract: A microfluidic system and method are disclosed. The microfluidic system includes: a first base substrate; a second base substrate opposite to the first base substrate; a first electrode on a side of the first base substrate close to the second base substrate; and a second electrode on a side of the second base substrate close to the first base substrate, the first base substrate and the second base substrate forms a cell, the cell is configured to receive a liquid to be detected, the first electrode and the second electrode are configured to drive the liquid to be detected during a first time period, and output a capacitance signal between the first electrode and the second electrode during a second time period.
    Type: Application
    Filed: April 18, 2018
    Publication date: March 7, 2019
    Inventors: Yanling Han, Xue Dong, Haisheng Wang, Xiaoliang Ding, Yingming Liu, Yuzhen Guo, Xueyou Cao, Ping Zhang, Pengpeng Wang, Chih Jen Cheng, Wei Liu, Yangbing Li, Likai Deng
  • Publication number: 20190073088
    Abstract: There are disclosed a system and method for touch and interaction in a three-dimension display, and after a three-dimension touch and interaction mode is enabled, a relative location relationship between a touch position of an operator and a display panel is determined according to transmitting time of ultrasonic signals transmitted by at least two ultrasonic transmitters and receiving time when ultrasonic signals reflected at the touch position of the operator are received by at least two ultrasonic sensors; and then the ultrasonic transmitters are controlled to transmit ultrasonic signals at preset power to the touch position of the operator according to a three-dimension object currently displayed on the display panel and the relative location relationship between the touch position of the operator and the display panel to make feedback for a touch operation at the touch position of the operator.
    Type: Application
    Filed: September 29, 2017
    Publication date: March 7, 2019
    Inventors: Xiaoliang DING, Haisheng WANG, Yingming LIU, Yanling HAN, Chih-Jen CHENG
  • Publication number: 20190042043
    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: Application
    Filed: March 12, 2018
    Publication date: February 7, 2019
    Inventors: Pengpeng WANG, Haisheng WANG, Xiaoliang DING, Chih Jen CHENG, Yanling HAN, Ping ZHANG, Xueyou CAO, Wei LIU, Yuzhen GUO
  • Publication number: 20190033976
    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: Application
    Filed: June 4, 2018
    Publication date: January 31, 2019
    Inventors: Xueyou Cao, Xue Dong, Haisheng Wang, Xiaoliang Ding, Chih Jen Cheng, Pengpeng Wang, Wei Liu, Yanling Han, Ping Zhang
  • Publication number: 20190019850
    Abstract: A fingerprint recognition device and an OLED display device, which relate to the technical field of display and can solve the problems of a low recognition accuracy due to a large distance from a finger to a fingerprint recognition device. The fingerprint recognition device comprises recognition units alternately defined by a plurality of scanning lines and signal reading lines which are crisscrossed with each other. Each recognition unit is provided with a switching transistor and a photosensitive element. The photosensitive element comprises a photoelectric conversion layer and a collimator filter layer which are stacked successively. The collimator filter layer is used for irradiating incident light onto the photoelectric conversion layer in parallel, and the photoelectric conversion layer is used for performing photoelectric conversion on the incident light.
    Type: Application
    Filed: September 15, 2017
    Publication date: January 17, 2019
    Inventors: Rui XU, Haisheng WANG, Yingming LIU, Pengpeng WANG, Chih-Jen CHENG, Yunke QIN, Yuzhen GUO, Wei LIU
  • Publication number: 20180323243
    Abstract: An array substrate includes: a base substrate; a plurality of first electrodes disposed on the base substrate; a plurality of second electrodes disposed above the plurality of first electrodes, wherein orthographic projections of the plurality of second electrodes on the base substrate and orthographic projections of the plurality of first electrodes on the base substrate are intersectingly arranged; a plurality of pixel units located in overlapping areas of the orthographic projections of the plurality of second electrodes on the base substrate and the orthographic projections of the plurality of first electrodes on the base substrate, respectively; and a plurality of photosensitive units disposed at gaps between adjacent two of the plurality of pixel units, respectively, for receiving light signals emitted by the plurality of pixel units and reflected by the object to be detected and transforming the received light signals into electric signals.
    Type: Application
    Filed: November 16, 2017
    Publication date: November 8, 2018
    Inventors: Pengpeng WANG, Xue DONG, Haisheng WANG, Xiaoliang DING, Yingming LIU, Chih Jen CHENG, Yanling HAN, Wei LIU, Xueyou CAO, Ping ZHANG
  • Patent number: 10120487
    Abstract: A method for hybrid touch sensing for detecting a normal touch and a force touch concurrently is provided. The method includes the following steps. Provide a first driving signal to a first capacitor, wherein the first driving signal is a periodic signal with a first frequency. Provide a second driving signal to a second capacitor, wherein the second driving signal is a periodic signal with a second frequency different from the first frequency. Generate a composite sensing signal by feeding the first driving signal and the second driving signal to a front-end circuit. Extract information from the composite sensing signal to calculate a first change in capacitance of the first capacitor and a second change in capacitance of the second capacitor to detect the normal touch and the force touch concurrently.
    Type: Grant
    Filed: June 28, 2016
    Date of Patent: November 6, 2018
    Assignee: NOVATEK MICROELECTRONICS CORP.
    Inventors: Chih-Jen Cheng, He-Wei Huang, Tsen-Wei Chang
  • Patent number: 9935380
    Abstract: The antenna device includes a first antenna module and a second antenna module. The first antenna module includes a number of first antennas disposed at intervals. The second antenna module includes a number of second antennas disposed at intervals within a space surrounded by the first antennas. The first and second antennas are of different polarization directions. In one embodiment, the first antennas are horizontally polarized antennas having omnidirectional field patterns. The second antennas are inverted F antennas. By arranging the first and second antennas along an outer ring and an inner ring respectively, the distance between the first and second antenna modules are maximized. Furthermore, by having the first and second antennas with orthogonal polarization directions, the mutual interference between the radiation energy of the first and second antenna modules is effectively reduced.
    Type: Grant
    Filed: June 14, 2016
    Date of Patent: April 3, 2018
    Inventors: Chih-Jen Cheng, Chih-Kai Liu, Kui-Hsien Huang
  • Publication number: 20180018036
    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: Application
    Filed: July 12, 2016
    Publication date: January 18, 2018
    Inventors: He-Wei Huang, Chih-Jen Cheng
  • Publication number: 20170371475
    Abstract: A method for hybrid touch sensing for detecting a normal touch and a force touch concurrently is provided. The method includes the following steps. Provide a first driving signal to a first capacitor, wherein the first driving signal is a periodic signal with a first frequency. Provide a second driving signal to a second capacitor, wherein the second driving signal is a periodic signal with a second frequency different from the first frequency. Generate a composite sensing signal by feeding the first driving signal and the second driving signal to a front-end circuit. Extract information from the composite sensing signal to calculate a first change in capacitance of the first capacitor and a second change in capacitance of the second capacitor to detect the normal touch and the force touch concurrently.
    Type: Application
    Filed: June 28, 2016
    Publication date: December 28, 2017
    Inventors: Chih-Jen Cheng, He-Wei Huang, Tsen-Wei Chang
  • Publication number: 20170358868
    Abstract: The antenna device includes a first antenna module and a second antenna module. The first antenna module includes a number of first antennas disposed at intervals. The second antenna module includes a number of second antennas disposed at intervals within a space surrounded by the first antennas. The first and second antennas are of different polarization directions. In one embodiment, the first antennas are horizontally polarized antennas having omnidirectional field patterns. The second antennas are inverted F antennas. By arranging the first and second antennas along an outer ring and an inner ring respectively, the distance between the first and second antenna modules are maximized. Furthermore, by having the first and second antennas with orthogonal polarization directions, the mutual interference between the radiation energy of the first and second antenna modules is effectively reduced.
    Type: Application
    Filed: June 14, 2016
    Publication date: December 14, 2017
    Inventors: Chih-Jen Cheng, Chih-Kai Liu, Kui-Hsien Huang
  • Publication number: 20170168641
    Abstract: A display device with a force sensing device is provided. The display device with the force sensing device includes a display layer and a non-display layer. The display layer is configured to display an image. The non-display layer is disposed below the display layer. The non-display layer includes a first signal transmission layer and a first signal transmission layer. The deformable layer is disposed on a surface of the first signal transmission layer. The force sensing device includes the deformable layer, the first signal transmission layer and a second signal transmission layer. The second signal transmission layer is disposed above the first signal transmission layer. One of the first signal transmission layer and the second signal transmission layer receives a driving signal and the other of the first signal transmission layer and the second signal transmission layer receives a sensing signal.
    Type: Application
    Filed: December 9, 2016
    Publication date: June 15, 2017
    Applicant: Novatek Microelectronics Corp.
    Inventors: Chih-Jen Cheng, Yu-Ying Tang, Kuan-Yi Yang