Patents by Inventor Chun Cao

Chun Cao 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: 10923904
    Abstract: An overvoltage protection unit, an overvoltage protection method, a sampling module, a pixel circuit and a display apparatus are provided. The overvoltage protection unit includes a comparator and an output switch, where a first input terminal of the comparator is supplied with a predetermined maximum voltage, a second input terminal of the comparator is supplied with an actual sampled voltage, an output terminal of the comparator is connected with a control terminal of the output switch and the actual sampled voltage is supplied to an input terminal of the output switch; the output switch selectively outputs the actual sampled voltage in accordance with an output signal of the comparator.
    Type: Grant
    Filed: January 29, 2019
    Date of Patent: February 16, 2021
    Assignees: HEFEI XINSHENG OPTOELECTRONICS TECHNOLOGY CO., LTD., BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Chun Cao, Min He
  • Publication number: 20210024267
    Abstract: A packaging structure is used for carrying at least one carried object. The packaging structure comprises a carrying unit and a covering member. The carrying unit includes a supporting plate, at least one first side plate connected to the edge of the supporting plate, and at least one combing member. The supporting plate has two opposite surfaces, and the first side plate is able to bend to one of the surfaces of the supporting plate, so that the carrying unit is able to present as an unfolded state or a folded state. The first side plate is stacked on the supporting plate when the carrying unit is in the folded state, and the combing member keeps the first side plate stacked on the supporting plate. The covering member is used for positioning the carried object on the carrying unit. The invention also provides a delivering device for clamping and positioning a plurality of the aforementioned packaging structures in an upright manner.
    Type: Application
    Filed: July 20, 2020
    Publication date: January 28, 2021
    Inventors: Fang-Chun LIU, Hung-Lin CHOU, Chao-Hsu CHEN, Wei-Ju CHEN, Shu-Juan SONG, Ren-Zhu CAO, Tian-Yu ZHAO, Chih-Ming CHAN
  • Publication number: 20200410936
    Abstract: The present disclosure provides a method and a device for driving a display panel. The method of the present disclosure includes: determining a plurality of candidate time differences according to a highest brightness threshold of the sub-pixels of each color; for each candidate time difference, displaying, by the display panel, a same test picture using the candidate time difference, and detecting picture display quality of the display panel when the test picture is displayed by the display panel using the candidate time difference; and determining a candidate time difference corresponding to an optimal picture display quality as the time difference.
    Type: Application
    Filed: March 25, 2020
    Publication date: December 31, 2020
    Inventors: Wei CHEN, Chun CAO, Haixia XU, Fei YANG
  • Patent number: 10867554
    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: Grant
    Filed: July 3, 2019
    Date of Patent: December 15, 2020
    Assignees: Hefei Xinsheng Optoelectronics Technology Co., Ltd., BOE Technology Group Co., Ltd.
    Inventors: Min He, Song Meng, Fei Yang, Chun Cao, Xiaolong Wei
  • 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
  • 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: 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: 20200274347
    Abstract: An overvoltage protection unit, an overvoltage protection method, a sampling module, a pixel circuit and a display apparatus are provided. The overvoltage protection unit includes a comparator and an output switch, where a first input terminal of the comparator is supplied with a predetermined maximum voltage, a second input terminal of the comparator is supplied with an actual sampled voltage, an output terminal of the comparator is connected with a control terminal of the output switch and the actual sampled voltage is supplied to an input terminal of the output switch; the output switch selectively outputs the actual sampled voltage in accordance with an output signal of the comparator.
    Type: Application
    Filed: January 29, 2019
    Publication date: August 27, 2020
    Applicants: Hefei Xinsheng Optoelectronics Technology Co., Ltd., BOE Technology Group Co., Ltd.
    Inventors: Chun CAO, Min HE
  • Patent number: 10743405
    Abstract: The present disclosure provides a printed circuit board including a plurality of conductive layers separated by insulating medium and a plurality of connection structures. Each connection structure penetrates each of the conductive layers. The plurality of conductive layers comprises a first conductive layer in which first signal lines are located and a second conductive layer in which second signal lines are located, and the first and second signal lines are connected via the connection structures. Anti-pads surrounding the connection structures are provided on others of the plurality of conductive layers except the first and the second conductive layers. For a same connection structure, the anti-pads surrounding the connection structure include adjacent anti-pads and nonadjacent anti-pads. Size of the adjacent anti-pads in any direction parallel to the conductive layers is smaller than that of the nonadjacent anti-pads. The present disclosure also provides a display apparatus.
    Type: Grant
    Filed: June 28, 2019
    Date of Patent: August 11, 2020
    Assignees: HEFEI XINSHENG OPTOELECTRONICS TECHNOLOGY CO., LTD., BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Enming Xie, Xiaolong Wei, Chun Cao, Wenchao Bao
  • Patent number: 10719169
    Abstract: A touch readout circuit, a touch display panel and a display device are disclosed, the touch readout circuit includes a first gating circuit, configured to control a first current signal at a first electrode of the light-emitting component; a current mirror circuit, configured to provide the first current signal and a second current signal to a signal processing circuit, a current direction of the second current signal being opposite to a current direction of the first current signal; and a signal processing circuit, configured to: receive the first current signal, the second current signal and a touch scan signal, filter the second current signal to obtain a third current signal, provide a touch readout signal to an output end of the touch readout circuit according to the third current signal, the first current signal and the touch scan signal.
    Type: Grant
    Filed: March 22, 2018
    Date of Patent: July 21, 2020
    Assignee: BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Xiaoliang Ding, Haisheng Wang, Chun Wei Wu, Yingming Liu, Shengji Yang, Pengcheng Lu, Pengpeng Wang, Xueyou Cao, Wei Liu
  • Patent number: 10713464
    Abstract: A fingerprint identification substrate and a fabrication method thereof, a display panel and a display apparatus are provided. The fingerprint identification substrate includes a base substrate and a plurality of fingerprint identification units on the base substrate. Each fingerprint identification unit includes a photosensitive sense electrode and a thin film transistor which are positioned on the base substrate, the photosensitive sense electrode is positioned between the base substrate and the thin film transistor, and the photosensitive sense electrode is electrically connected with a source electrode or a drain electrode of the thin film transistor.
    Type: Grant
    Filed: April 1, 2017
    Date of Patent: July 14, 2020
    Assignee: BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Yanling Han, Xue Dong, Jing LV, Haisheng Wang, Chun Wei Wu, Xiaoliang Ding, Yingming Liu, Pengpeng Wang, Wei Liu, Xueyou Cao, Yanan Jia, Lijun Zhao, Changfeng Li, Rui Xu, Yuzhen Guo
  • 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: 20200201436
    Abstract: Embodiments of the present disclosure provide a method and a device for providing haptic feedback in a virtual reality system. The method includes acquiring state information of one or more virtual objects in a virtual scene presented in the virtual reality system and/or one or more real objects in an external environment of a user using the virtual reality system; generating haptic feedback information according to the state information; and providing haptic feedback to the user according to the haptic feedback information.
    Type: Application
    Filed: August 9, 2017
    Publication date: June 25, 2020
    Applicant: BOE Technology Group Co., Ltd.
    Inventors: Yanling HAN, Xue DONG, Jing LV, Haisheng WANG, Chun Wei WU, Xiaoliang DING, Wei LIU, Pengpeng WANG, Xueyou CAO, 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: 10678386
    Abstract: The present disclosure provides a display apparatus and a method for implementing a touch feedback. The display apparatus comprises: a display unit configured to display an image; a control unit configured to determine a touched object in the image according to a touch position of a user, and provide voltage signals based on attribute information of the touched object; and a touch unit configured to generate an induced capacitance and an electrostatic force at the touch position based on the voltage signals from the control unit. The display apparatus according to the present disclosure can improve the user experiences in using a terminal device comprising the display apparatus.
    Type: Grant
    Filed: August 9, 2017
    Date of Patent: June 9, 2020
    Assignee: BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Yanling Han, Xue Dong, Jing Lv, Haisheng Wang, Chun-Wei Wu, Xiaoliang Ding, Pengpeng Wang, Xueyou Cao, Wei Liu, Ping Zhang
  • Patent number: 10643955
    Abstract: A manufacturing method of a system in package (SiP) module based on double plastic-sealing, including: welding electronic units required by the SiP module onto a top surface of a Printed Circuit Board (PCB), with welding spots being reserved on a bottom surface of the PCB to obtain a PCB assembly (PCBA); implementing a first-time filling to fill on plastic materials on a top surface of the PCBA, ensuring that the plastic materials cover the electronic units, and obtaining a first-time plastic-sealing PCBA after the plastic materials are solidified; pasting tightly a functional film on a top surface of the first-time plastic-sealing PCBA to obtain a film-pasted PCBA; and implementing a second-time filling to fill on plastic materials on the film-pasted PCBA, ensuring that the plastic materials cover a top surface and a periphery of the film-pasted PCBA, and obtaining the SiP module after the plastic materials are solidified.
    Type: Grant
    Filed: December 3, 2018
    Date of Patent: May 5, 2020
    Assignee: UNIVERSAL SCIENTIFIC INDUSTRIAL (SHANGHAI) CO., LTD.
    Inventors: Dong-Feng Ling, Chun Cao, Yun-Gang Zou
  • Publication number: 20200137898
    Abstract: A circuit board includes a substrate, an input binding region and at least two output binding regions disposed on the substrate. Each of the output binding regions includes a plurality of binding portions, and the number of the binding portions included in different output binding regions is different. The substrate is configured to output a signal received by the input binding region to respective binding portions included in each of the output binding regions.
    Type: Application
    Filed: May 28, 2019
    Publication date: April 30, 2020
    Applicants: HEFEI XINSHENG OPTOELECTRONICS TECHNOLOGY CO., LTD., BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Enming XIE, Dongxu HAN, Wenchao BAO, Chun CAO
  • Patent number: 10613365
    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: Grant
    Filed: February 13, 2018
    Date of Patent: April 7, 2020
    Assignee: BOE TECHNOLOGY GROUP CO., LTD.
    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: 20200068704
    Abstract: The present disclosure provides a printed circuit board including a plurality of conductive layers separated by insulating medium and a plurality of connection structures. Each connection structure penetrates each of the conductive layers. The plurality of conductive layers comprises a first conductive layer in which first signal lines are located and a second conductive layer in which second signal lines are located, and the first and second signal lines are connected via the connection structures. Anti-pads surrounding the connection structures are provided on others of the plurality of conductive layers except the first and the second conductive layers. For a same connection structure, the anti-pads surrounding the connection structure include adjacent anti-pads and nonadjacent anti-pads. Size of the adjacent anti-pads in any direction parallel to the conductive layers is smaller than that of the nonadjacent anti-pads. The present disclosure also provides a display apparatus.
    Type: Application
    Filed: June 28, 2019
    Publication date: February 27, 2020
    Inventors: Enming XIE, Xiaolong WEI, Chun CAO, Wenchao BAO
  • Patent number: 10571627
    Abstract: An optical fiber comprises, from a center to a periphery, a fiber core of undoped silica; a cladding layer; and a coating of polyacrylate, wherein the fiber core has a radius of 5 to 7 ?m and an ellipticity of less than 1.5%, the cladding layer with an ellipticity of less than 0.4% comprises inner, intermediate, and outer cladding layers, the inner cladding layer being doped with fluorine of 5 to 12 ?m thickness, and refractive index difference to fiber core of ?0.4 to ?0.2%, the outer cladding layer being undoped quartz of 25 to 45 ?m thickness, and the coating comprises an inner coating of 25 to 40 ?m thickness, and an outer coating of 25 to 35 ?m thickness and an ellipticity of less than 2%. The optical fiber has high durability and large effective transmission area, a method and system for preparing such optical fiber are also disclosed.
    Type: Grant
    Filed: November 30, 2018
    Date of Patent: February 25, 2020
    Assignees: ZHONGTIAN TECHNOLOGY FIBER POTICS CO., LTD, ZHONGTIAN TECHNOLOGY ADVANCED MATERIALS CO., LTD., JIANGSU ZHONGTIAN TECHNOLOGY CO., LTD.
    Inventors: Shan-Shan Cao, Zhi-Zhong Liu, Yi-Chun Shen, Xiao-Xing Zhu, Zhen Wang, Hai-Tao Zhang, Hai-Tao Xu, Ji-Gang Hu, Hai-Yan Su