Patents by Inventor Yuying CAI

Yuying CAI 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: 11917801
    Abstract: An electromagnetic interference (EMI) shield may include a frame configured to be coupled to a printed circuit board (PCB). The frame may include a horizontal body and a plurality of vertical walls extending perpendicularly from the horizontal body. The plurality of vertical walls defines a portion of a perimeter of the EMI shield, the perimeter including a concave corner defined virtually by a first and second vertical wall of the plurality of vertical walls. The first vertical wall does not extend all the way to the second wall and an opening if formed between. The first vertical wall includes an attached portion connected to the horizontal frame and an extension portion connected to the attached portion by way of a first fold. The extension portion at least partially overlays, abuts, and extends beyond the attached portion toward the second wall thereby at least partially covering the opening.
    Type: Grant
    Filed: April 28, 2023
    Date of Patent: February 27, 2024
    Assignee: Hewlett Packard Enterprise Development LP
    Inventors: Yuying Chen, Yuhai Guo, Kehui Cai
  • Patent number: 11900863
    Abstract: A display panel and a display device, including a substrate, a circuit layer located at a side of the substrate, and a top light-shielding layer configured to receive a voltage signal. The circuit layer includes a light-emitting shift circuit, including a first output module and a control module. The first output module is electrically connected to a first node, a first fixed potential signal line, and a light-emitting control signal line and is configured to, in response to a voltage of the first node, transmit a light-emitting enable voltage provided by the first fixed-potential signal line to the light-emitting control signal line. The control module is connected to the first node and includes a control transistor. The top light-shielding layer is located at a side of the control transistor. In a direction perpendicular to the substrate, the top light-shielding layer overlaps with a channel of the control transistor.
    Type: Grant
    Filed: September 6, 2022
    Date of Patent: February 13, 2024
    Assignee: Wuhan Tianma Microelectronics Co., Ltd. Shanghai Branch
    Inventors: Mengjia He, Yana Gao, Zhi Liu, Yuying Cai, Xingyao Zhou
  • Publication number: 20230222962
    Abstract: A display panel and a display device, including a substrate, a circuit layer located at a side of the substrate, and a top light-shielding layer configured to receive a voltage signal. The circuit layer includes a light-emitting shift circuit, including a first output module and a control module. The first output module is electrically connected to a first node, a first fixed potential signal line, and a light-emitting control signal line and is configured to, in response to a voltage of the first node, transmit a light-emitting enable voltage provided by the first fixed-potential signal line to the light-emitting control signal line. The control module is connected to the first node and includes a control transistor. The top light-shielding layer is located at a side of the control transistor. In a direction perpendicular to the substrate, the top light-shielding layer overlaps with a channel of the control transistor.
    Type: Application
    Filed: September 6, 2022
    Publication date: July 13, 2023
    Applicant: Wuhan Tianma Microelectronics Co., Ltd. Shanghai Branch
    Inventors: Mengjia He, Yana Gao, Zhi Liu, Yuying Cai, Xingyao Zhou
  • Publication number: 20230217738
    Abstract: The embodiments of the present application provide a display panel and a display apparatus. The display panel includes: fan-out lines and a power signal line, and the power signal line includes openings; in a direction perpendicular to a plane in which the display panel is located, the fan-out lines include M fan-out line groups; the (i-1)-th fan-out line group includes the fan-out lines with a length Li-1, the i-th fan-out line group includes the fan-out lines with a length Li, the (i+1)-th fan-out line group includes the fan-out lines with a length Li+1, and Li?1>Li>Li+1; overlapping areas between the power signal line and the fan-out lines with the length Li?1, Li and Li+1 are Si?1, Si and Si+1, respectively, Si?1?Si?Si+1, and 2 ?i?M?1.
    Type: Application
    Filed: March 21, 2022
    Publication date: July 6, 2023
    Applicants: Wuhan Tianma Microelectronics Co., Ltd., Wuhan Tianma Microelectronics Co., Ltd. Shanghai Branch
    Inventors: Qibing WEI, Peng ZHANG, Kang YANG, Yuying CAI
  • Publication number: 20220299815
    Abstract: A display panel and a display apparatus are described. In an embodiment, the display panel includes a display area and a bezel area; a first support structure located in the display area, the first support structure including a plurality of first support portions; an encapsulation adhesive located in the bezel area; a second support structure located in the bezel area. In an embodiment, at different positions of the bezel area, the second support structure and the encapsulation adhesive are at an equal distance from each other within a preset error range; the second support structure includes at least one second support portion; and in a direction perpendicular to a plane in which the display panel is located, at least some of the second support portions each has orthographic projection area larger than orthographic projection area of the first support portion.
    Type: Application
    Filed: June 6, 2022
    Publication date: September 22, 2022
    Applicants: WUHAN TIANMA MICROELECTRONICS CO., LTD., Wuhan Tianma Microelectronics Co., Ltd. Shanghai Branch
    Inventors: Qibing Wei, Bing Han, Yuying Cai, Peng Zhang, Kang Yang
  • Publication number: 20200090583
    Abstract: A pixel driving circuit of OLED display device and an OLED display device having the pixel driving circuit are disclosed. The pixel driving circuit adopts a 4T1C pixel structure such that when turning on or turning off, the OLED display device detects the threshold voltage of the driving thin-film transistor, and compensating the threshold voltage being detected into the driving current of the organic light-emitting diode when operates normally such that the present invention is capable of eliminating an affection of the threshold voltage of the driving thin-film transistor to the driving current of the organic light-emitting diode so as to improve the quality of the display image of the OLED display device.
    Type: Application
    Filed: September 27, 2017
    Publication date: March 19, 2020
    Applicant: Shenzhen China Star Optoelectronics Semiconductor Display Technology Co., Ltd.
    Inventor: Yuying CAI
  • Patent number: 10593260
    Abstract: A pixel driving circuit of OLED display device and an OLED display device having the pixel driving circuit are disclosed. The pixel driving circuit adopts a 4T1C pixel structure such that when turning on or turning off, the OLED display device detects the threshold voltage of the driving thin-film transistor, and compensating the threshold voltage being detected into the driving current of the organic light-emitting diode when operates normally such that the present invention is capable of eliminating an affection of the threshold voltage of the driving thin-film transistor to the driving current of the organic light-emitting diode so as to improve the quality of the display image of the OLED display device.
    Type: Grant
    Filed: September 27, 2017
    Date of Patent: March 17, 2020
    Assignee: Shenzhen China Star Optoelectronics Semiconductor Display Technology Co., Ltd
    Inventor: Yuying Cai
  • Patent number: 10431157
    Abstract: A pixel driving circuit using 4T2C pixel structure applied in an OLED display device is provided. The OLED display device senses a threshold voltage imposed on the TFT and a turn-on voltage imposed on the OLED when the OLED display device is powered off or powered on and compensates the threshold voltage which is sensed in normal operating display and the turn-on voltage imposed on the OLED for raw data signals, thereby reducing the influence of the threshold voltage imposed on the TFT on the turn-on voltage of the OLED and improving the display quality of the OLED display device.
    Type: Grant
    Filed: September 14, 2017
    Date of Patent: October 1, 2019
    Assignee: Shenzhen China Star Optoelectronics Semiconductor Display Technology Co., Ltd
    Inventor: Yuying Cai
  • Patent number: 10367037
    Abstract: A pixel structure of an organic light emitting diode (OLED) display panel and a manufacturing method thereof are disclosed. The pixel structure comprises a pixel region, anode conductive layers, pixel units, and a cathode conductive layer. The pixel region comprises sub-pixel regions arranged in sequence, at least two adjacent sub-pixel regions defined as a sub-pixel region group are disposed integrally. The anode conductive layers are disposed in the sub-pixel regions respectively, and separated from each other. The cathode conductive layer is electrically connected with the anode conductive layers to control the pixel units. Each of the pixel units comprises sub-pixels and is disposed in the pixel region. Each of the sub-pixels is disposed in one of the sub-pixel regions. The sub-pixels are formed integrally and have a same color in the sub-pixel region group. The pixel unit comprises a hole injection layer, a luminous layer and an electron injection layer.
    Type: Grant
    Filed: June 22, 2017
    Date of Patent: July 30, 2019
    Assignee: Shenzhen China Star Optoelectronics Semiconductor Display Technology Co., Ltd.
    Inventors: Shinsuke Iguchi, Yuan-Chun Wu, Yuying Cai
  • Patent number: 10360849
    Abstract: A pixel driving circuit is disclosed, including: a driving switch, connected between a driving power source and an OLED; a first switch, connected between the source and drain of the driving switch, and being a transistor of the same model as the driving switch; a control circuit, connected between the drain and source of the first switch, for inputting a first control signal and outputting a compensation current to compensate threshold voltage drift of the first switch; a storage unit, connected between the source of a second switch and gate of the first switch, for storing a compensation voltage of compensation current compensating the first switch; the gate of second switch being for inputting a second control signal and the drain for inputting a data signal, the storage unit being for storing a data voltage generated by the data signal. A display panel and pixel driving method are disclosed.
    Type: Grant
    Filed: May 31, 2017
    Date of Patent: July 23, 2019
    Assignee: Shenzhen China Star Optoelectronics Technology Co., Ltd
    Inventor: Yuying Cai
  • Patent number: 10361262
    Abstract: A pixel driving circuit using 4T1C pixel structure applied in an OLED display device is provided. The OLED display device senses a threshold voltage imposed on the TFT when the OLED display device is powered off or powered on and compensates the threshold voltage which is sensed in normal operating display for the driving current of the OLED, thereby reducing the influence of the threshold voltage imposed on the TFT on the driving current of the OLED and improving the display quality of the OLED display device.
    Type: Grant
    Filed: September 28, 2017
    Date of Patent: July 23, 2019
    Assignee: Shenzhen China Star Optoelectronics Semiconductor Display Technology Co., Ltd
    Inventor: Yuying Cai
  • Patent number: 10347658
    Abstract: A pixel driving circuit and an OLED display are provided. The pixel driving circuit includes a first TFT, a second TFT, a third TFT, a fourth TFT, a capacitor, and an OLED. A gate of the third TFT is coupled to the scanning signal. A source of the third TFT is coupled to a drain of the fourth TFT. A gate of the fourth TFT is coupled to a data signal and a source of the fourth is coupled to a second reference voltage signal. The fourth TFT controls the electric current of the first TFT with the data signal and the second reference signal during the compensation stage of threshold voltage. Further, the compensation voltage of the first TFT is compensated.
    Type: Grant
    Filed: April 20, 2017
    Date of Patent: July 9, 2019
    Assignee: Shenzhen China Star Optoelectronics Technology Co., Ltd
    Inventor: Yuying Cai
  • Patent number: 10347178
    Abstract: A pixel driving circuit is disclosed, including: a driving switch, connected between a driving power source and an OLED; a first switch, connected to the gate of the driving switch for inputting a first control signal; a control circuit, connected to the source of the driving switch, for inputting a second control signal and outputting a compensation current to compensate threshold voltage drift of the driving switch; a storage unit, connected between the gate and source of the driving switch, for storing a compensation voltage of compensation current compensating the driving switch; the drain of first switch being for inputting a data signal, the storage unit being for storing a data voltage generated by the data signal and applying the compensation voltage and data voltage to the driving switch. A display panel and pixel driving method are also disclosed.
    Type: Grant
    Filed: May 31, 2017
    Date of Patent: July 9, 2019
    Assignee: Shenzhen China Star Optoelectronics Technology Co., Ltd
    Inventor: Yuying Cai
  • Patent number: 10332451
    Abstract: The invention discloses an AMOLED pixel driver circuit and pixel driving method, by using a pixel driver circuit of 4T1C or 4T2C structure to effectively compensate threshold voltage of driving TFT in each pixel; through adding a third TFT (T3) and a fourth TFT (T4) and introducing the first scan signal (SEL1) to control the third TFT (T3) and the fourth TFT (T4) to respectively writing the initialization signal (INI) to initialize the gate and the source of the driving TFT in reset phase so as to reduce the complexity of the power supply signal so that the circuit can use DC power supply directly; by adding a second capacitor (C2) to regulate the influence on the source voltage of the driving TFT by the data signal (DATA) so as to reduce the data signal complexity. As a result, the data signal only needs to switch once.
    Type: Grant
    Filed: December 16, 2016
    Date of Patent: June 25, 2019
    Assignee: SHENZHEN CHINA STAR OPTOELECTRONICS TECHNOLOGY CO., LTD.
    Inventor: Yuying Cai
  • Patent number: 10297199
    Abstract: Disclosed are an AMOLED pixel driving circuit and a pixel driving method. The AMOLED pixel driving circuit utilizes the 4T2C structure, and comprises: a first thin film transistor (T1), a second thin film transistor (T2), a third thin film transistor (T3), a fourth thin film transistor (T4), a first capacitor (C1), a second capacitor (C2) and an organic light emitting diode (D1); the nth scan signal (SCAN(n)) and the n+1th scan signal (SCAN(n+1)) are combined with each other, and correspond to a threshold voltage sensing stage, a holding stage, a programming stage and a drive stage one after another. In comparison with the pixel driving circuit of the 5T2C structure, the corresponding thin film transistor is controlled merely with arranging the scan signal. There will be the compensation function, and the amount of the control signals can be decreased, and the circuit structure is simplified and the cost is decreased.
    Type: Grant
    Filed: May 13, 2016
    Date of Patent: May 21, 2019
    Assignee: SHENZHEN CHINA STAR OPTOELECTRONICS TECHNOLOGY CO., LTD.
    Inventor: Yuying Cai
  • Publication number: 20190074340
    Abstract: A pixel driving circuit using 4T2C pixel structure applied in an OLED display device is provided. The OLED display device senses a threshold voltage imposed on the TFT and a turn-on voltage imposed on the OLED when the OLED display device is powered off or powered on and compensates the threshold voltage which is sensed in normal operating display and the turn-on voltage imposed on the OLED for raw data signals, thereby reducing the influence of the threshold voltage imposed on the TFT on the turn-on voltage of the OLED and improving the display quality of the OLED display device.
    Type: Application
    Filed: September 14, 2017
    Publication date: March 7, 2019
    Applicant: Shenzhen China Star Optoelectronics Semiconductor Display Technology Co., Ltd.
    Inventor: Yuying CAI
  • Publication number: 20190074341
    Abstract: A pixel driving circuit using 4T1C pixel structure applied in an OLED display device is provided. The OLED display device senses a threshold voltage imposed on the TFT when the OLED display device is powered off or powered on and compensates the threshold voltage which is sensed in normal operating display for the driving current of the OLED, thereby reducing the influence of the threshold voltage imposed on the TFT on the driving current of the OLED and improving the display quality of the OLED display device.
    Type: Application
    Filed: September 28, 2017
    Publication date: March 7, 2019
    Applicant: Shenzhen China Star Optoelectronics Semiconductor Display Technology Co., Ltd.
    Inventor: Yuying CAI
  • Patent number: 10192482
    Abstract: The present disclosure relates to a pixel compensation circuit, a scanning driving circuit and a flat display device. Control end of first controllable transistor connects to first scanning line, first end of first controllable transistor connects to data line; control end of driving transistor connects to second end of first controllable transistor, first end of driving transistor connects to first voltage end; control end of second controllable transistor connects to second scanning line, first end of second controllable transistor connects to second end of driving transistor; anode of OLED connects to second end of second controllable transistor, cathode of OLED is grounded; control end of driving transistor connects to first end of second controllable transistor through first capacitor, first end of second controllable transistor connects to second voltage end through second capacitor.
    Type: Grant
    Filed: February 25, 2016
    Date of Patent: January 29, 2019
    Assignee: Shenzhen China Star Optoelectronics Technology Co., Ltd.
    Inventors: Yuying Cai, Kaiyuan Ke
  • Patent number: 10176755
    Abstract: A pixel driving circuit is disclosed, including: a driving switch, connected between a driving power source and an OLED; a first switch, connected between the drain of the driving switch and the driving power source for inputting a first control signal; a control circuit, connected between the drain and gate of the driving switch, for inputting a second control signal and outputting a compensation current to compensate threshold voltage drift of the driving switch; a storage unit, connected between the source of a second switch and gate of the first switch, for storing a compensation voltage of compensation current compensating the driving switch. A display panel and pixel driving method are also disclosed.
    Type: Grant
    Filed: May 31, 2017
    Date of Patent: January 8, 2019
    Assignee: Shenzhen China Star Optoelectronics Technology Co., Ltd
    Inventor: Yuying Cai
  • Publication number: 20180336820
    Abstract: A pixel driving circuit is disclosed, including: a driving switch, connected between a driving power source and an OLED; a first switch, connected to the gate of the driving switch for inputting a first control signal; a control circuit, connected to the source of the driving switch, for inputting a second control signal and outputting a compensation current to compensate threshold voltage drift of the driving switch; a storage unit, connected between the gate and source of the driving switch, for storing a compensation voltage of compensation current compensating the driving switch; the drain of first switch being for inputting a data signal, the storage unit being for storing a data voltage generated by the data signal and applying the compensation voltage and data voltage to the driving switch. A display panel and pixel driving method are also disclosed.
    Type: Application
    Filed: May 31, 2017
    Publication date: November 22, 2018
    Applicant: Shenzhen China Star Optoelectronics Technology Co., Ltd.
    Inventor: Yuying CAI