Patents by Inventor Xiaolong Chen

Xiaolong Chen 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: 10223971
    Abstract: The present disclosure provides an AMOLED pixel driving circuit and pixel driving method, where the driving circuit includes: a drain of a fifth thin film transistor couples to another side of a second capacitor, a drain of a third thin film transistor, and a source of a first thin film transistor; a drain of a fourth thin film transistor couples to a drain of the first thin film transistor, a drain of a second thin film transistor and a drain of a sixth thin film transistor.
    Type: Grant
    Filed: August 29, 2017
    Date of Patent: March 5, 2019
    Assignee: Shenzhen China Star Optoelectronics Semiconductor Display Technology Co., Ltd.
    Inventor: Xiaolong Chen
  • Publication number: 20190066583
    Abstract: The present disclosure provides an OLED pixel circuit and a method for retarding the aging of an OLED device. By providing a first sub-pixel driving unit, a second sub-pixel driving unit, a first reverse biasing unit, and a second reverse biasing unit and by simple control timing, a first light emitting diode and a second light emitting diode will not always be in a DC biased state, and the first light emitting diode and the second light emitting diode will emit light alternately in different frames.
    Type: Application
    Filed: October 26, 2017
    Publication date: February 28, 2019
    Inventors: Bobiao CHANG, Xiaolong CHEN, Yi-Chien WEN
  • Publication number: 20190066586
    Abstract: The invention discloses a pixel driver circuit and driving method thereof. The pixel driver circuit comprises a first TFT(T1) connected to first node (G) and second node (K); a second TFT(T2), connected to first control signal (S1), first node (G) and second node (K); a third TFT(T3), connected to second control signal (S2) and second node (K); a fourth TFT(T4), connected to first control signal (S1), third node (N) and reference voltage (Vref); a fifth TFT(T5), connected to first control signal (S1), third node (N) and data signal (Vdata); a sixth TFT(T6), connected to third control signal (S3); a first capacitor (C1) and a second capacitor; the reference voltage (Vref) being less than data signal Vdata). The invention also provides a corresponding driving method. The invention uses internal detection to eliminate luminance inconsistency caused by change of the driving TFT threshold voltage.
    Type: Application
    Filed: November 16, 2017
    Publication date: February 28, 2019
    Inventors: Xuebing Zhou, Xiaolong Chen
  • Patent number: 10210810
    Abstract: An OLED pixel driving circuit includes a first TFT having gate connected to a third node, and having a source and a drain connected to a second node and a first node respectively; a second TFT, having gate receiving a scan signal, and having a source and a drain connected to the first node and the third node respectively; a third TFT, having gate receiving the scan signal, and having a source and a drain connected to the second node and utilized for inputting a data voltage respectively; a fourth TFT, having gate receiving an illumination signal, and having a source and a drain connected to the second node and a DC high voltage power source respectively; a fifth TFT, having gate receiving the illumination signal, and having a source and a drain connected to the first node and an anode of an OLED, and two capacitors.
    Type: Grant
    Filed: November 30, 2017
    Date of Patent: February 19, 2019
    Assignee: SHENZHEN CHINA STAR OPTOELECTRONICS SEMICONDUCTOR DISPLAY TECHNOLOGY CO., LTD.
    Inventors: Shan Wang, Xiaolong Chen
  • Patent number: 10204561
    Abstract: An AMOLED pixel driving circuit and pixel driving method are provided. In the pixel driving circuit, a drain of the fourth thin film transistor is electrically coupled to a terminal of the second capacitor, a drain of the third thin film transistor, and a source of the first thin film transistor; a gate of the third thin film transistor receives a second scan signal, and a source of the third thin film transistor receives a data voltage.
    Type: Grant
    Filed: September 11, 2017
    Date of Patent: February 12, 2019
    Assignee: Shenzhen China Star Optoelectronics Semiconductor Display Technology Co., Ltd.
    Inventor: Xiaolong Chen
  • Publication number: 20190043419
    Abstract: A driving circuit for an active-matrix organic light-emitting diode (AMOLED) display panel includes a first thin-film transistor (TFT), a second TFT, a third TFT, a fourth TFT, a fifth TFT, a storage capacitor, and an organic light-emitting diode (OLED). The present disclosure also proposes an AMOLED display panel. The AMOLED display panel enhances uniformity of the display brightness of the AMOLED display panel.
    Type: Application
    Filed: October 17, 2017
    Publication date: February 7, 2019
    Inventors: Xiaolong CHEN, Yi-Chien WEN, Ming-Jong JOU
  • Patent number: 10198995
    Abstract: The pixel driving circuit and the driving method for driving pixels of an AMOLED display are provided. A 6T1C circuit is adopted by the pixel driving circuit and the pixel driving method proposed by the present disclosure so the threshold voltage of the driving tube is effectively compensated and that the current flowing through a light emitting device is not affected by the threshold voltage of the driving tube. The display brightness of the light emitting device is not affected by the ageing of the light emitting device itself, and the display of the panel becomes much more even; in other words, the display effect of the image improves. Besides, the structure of the light emitting device is simplified. In other words, the cost is obviously saved.
    Type: Grant
    Filed: November 2, 2017
    Date of Patent: February 5, 2019
    Assignee: SHENZHEN CHINA STAR OPTOELECTRONICS SEMICONDUCTOR DISPLAY TECHNOLOGY CO., LTD.
    Inventor: Xiaolong Chen
  • Patent number: 10192488
    Abstract: An OLED pixel driving circuit includes a first thin film transistor, a second thin film transistor, a third thin film transistor, a fourth thin film transistor, a fifth thin film transistor, a sixth thin film transistor, a capacitor and an OLED. A gate of the third thin film transistor receives a second scan signal, both a source of the third thin film transistor and a source of the fourth thin film transistor receive a data voltage or an initial voltage. A gate of the first thin film transistor is connected to a source of the second thin film transistor and one terminal of the capacitor, another terminal of the capacitor being grounded.
    Type: Grant
    Filed: October 27, 2017
    Date of Patent: January 29, 2019
    Assignee: SHENZHEN CHINA STAR OPTOELECTRONICS SEMICONDUCTOR DISPLAY TECHNOLOGY CO., LTD.
    Inventor: Xiaolong Chen
  • Patent number: 10186815
    Abstract: A USB Type-C interface chip having a CC pin. In an embodiment, the chip includes an internal unit coupled through a signal path to the CC pin; a high voltage detection unit coupled in the signal path, for detecting a voltage at the CC pin and comparing the detected voltage and a reference voltage; a high voltage protection unit for protecting, in response to the comparison result of the high voltage detection unit the internal unit from high voltage possibly present at the port of the chip.
    Type: Grant
    Filed: November 23, 2016
    Date of Patent: January 22, 2019
    Assignee: INTERNATIONAL GREEN CHIP (TIANJIN) CO., LTD.
    Inventors: Yu Shen, Xiaolong Chen
  • Publication number: 20190019456
    Abstract: An AMOLED pixel driving circuit and an AMOLED pixel driving method are provided. The AMOLED pixel driving circuit utilizes a 6T1C circuit in conjunction with a simple driving timing. A threshold voltage of a driving transistor can be effectively compensated, so that a current flowing through an organic light emitting device is not affected by the threshold voltage. Display uniformity of a panel can be increased. Furthermore, the structure of the AMOLED pixel driving circuit is simplified, and benefit is increased.
    Type: Application
    Filed: November 29, 2017
    Publication date: January 17, 2019
    Inventor: Xiaolong CHEN
  • Publication number: 20190019453
    Abstract: The present disclosure provides an AMOLED pixel driving circuit and pixel driving method, where the pixel driving circuit includes one side of a first capacitor coupled to the other side of a second capacitor, a gate of a fifth thin film transistor receives a first scanning signal, a drain of the fifth thin film transistor couples to a cathode of an OLED and a source of a third thin film transistor, a gate of the third thin film transistor receives a second scanning signal.
    Type: Application
    Filed: August 29, 2017
    Publication date: January 17, 2019
    Inventor: Xiaolong CHEN
  • Publication number: 20190019454
    Abstract: The present disclosure provides an AMOLED pixel driving circuit and pixel driving method, where the driving circuit includes: a drain of a fifth thin film transistor couples to another side of a second capacitor, a drain of a third thin film transistor, and a source of a first thin film transistor; a drain of a fourth thin film transistor couples to a drain of the first thin film transistor, a drain of a second thin film transistor and a drain of a sixth thin film transistor.
    Type: Application
    Filed: August 29, 2017
    Publication date: January 17, 2019
    Inventor: Xiaolong CHEN
  • Publication number: 20190019455
    Abstract: The pixel driving circuit and the driving method for driving pixels of an AMOLED display are provided. A 6T1C circuit is adopted by the pixel driving circuit and the pixel driving method proposed by the present disclosure so the threshold voltage of the driving tube is effectively compensated and that the current flowing through a light emitting device is not affected by the threshold voltage of the driving tube. The display brightness of the light emitting device is not affected by the ageing of the light emitting device itself, and the display of the panel becomes much more even; in other words, the display effect of the image improves. Besides, the structure of the light emitting device is simplified. In other words, the cost is obviously saved.
    Type: Application
    Filed: November 2, 2017
    Publication date: January 17, 2019
    Applicant: SHENZHEN CHINA STAR OPTOELECTRONICS SEMICONDUCTOR DISPLAY TECHNOLOGY CO., LTD.
    Inventor: Xiaolong CHEN
  • Patent number: 10181289
    Abstract: The present disclosure provides an AMOLED pixel driving circuit and pixel driving method, where the pixel driving circuit includes one side of a first capacitor coupled to the other side of a second capacitor, a gate of a fifth thin film transistor receives a first scanning signal, a drain of the fifth thin film transistor couples to a cathode of an OLED and a source of a third thin film transistor, a gate of the third thin film transistor receives a second scanning signal.
    Type: Grant
    Filed: August 29, 2017
    Date of Patent: January 15, 2019
    Assignee: Shenzhen China Star Optoelectronics Semiconductor Display Technology Co., Ltd.
    Inventor: Xiaolong Chen
  • Publication number: 20190012963
    Abstract: An AMOLED pixel driving circuit and pixel driving method are provided. In the pixel driving circuit, a drain of the fourth thin film transistor is electrically coupled to a terminal of the second capacitor, a drain of the third thin film transistor, and a source of the first thin film transistor; a gate of the third thin film transistor receives a second scan signal, and a source of the third thin film transistor receives a data voltage.
    Type: Application
    Filed: September 11, 2017
    Publication date: January 10, 2019
    Inventor: Xiaolong CHEN
  • Patent number: 10176759
    Abstract: The invention provides an AMOLED pixel driver circuit and pixel driving method. The AMOLED pixel driver circuit has a 6T1C structure, comprising a first thin film transistor (TFT) (T1), a second TFT (T2) forming mirror relation with the first TFT (T1), a third TFT (T3), a fourth TFT (T4), a fifth TFT (T5), a sixth TFT (T6), a capacitor (C1), and an organic light-emitting diode (OLED) (D1), and receiving a first scan signal (Scan1), a second scan signal (Scan2), a third scan signal (Scan3), a light-emitting signal (EM), a data signal (Data), and a reference voltage (Vref). The circuit can effectively compensate the threshold voltage of the driving TFT to solve the problem of unstable current flowing through the OLED caused by the threshold voltage drift to ensure uniform luminance of the OLED and improve the display quality.
    Type: Grant
    Filed: December 20, 2016
    Date of Patent: January 8, 2019
    Assignee: SHENZHEN CHINA STAR OPTOELECTRONICS TECHNOLOGY CO., LTD.
    Inventors: Xiaolong Chen, Mingjong Jou, Yichien Wen
  • Publication number: 20180374419
    Abstract: The present application provides a pixel driving circuit, which comprises a driving transistor, a first switch, a second switch, a third switch, a fourth switch, a first capacitor, a second capacitor, an initial-voltage-signal terminal, a data-voltage-signal terminal, a reset-voltage-signal terminal, and a driving-voltage-signal terminal. The driving transistor comprises a gate terminal, a source terminal, and a drain terminal. The first capacitor is connected between the source terminal and the gate terminal, the second capacitor is connected between the source terminal and a charge-voltage terminal. The charge-voltage terminal is respectively connected with the reset-voltage-signal terminal and the data-voltage-signal terminal via the first switch and the second switch. The drain terminal is connected with the driving-voltage-signal terminal via the third switch. The gate terminal is connected with the initial-voltage-signal terminal via the fourth switch.
    Type: Application
    Filed: November 30, 2017
    Publication date: December 27, 2018
    Applicant: Shenzhen China Star Optoelectronics Semiconductor Display Technology Co., Ltd.
    Inventors: Xiaolong CHEN, Yi-Chien WEN, Ming-Jong JOU
  • Publication number: 20180374420
    Abstract: The present application provides a pixel driving circuit, which comprises a driving transistor, which comprises a gate terminal, a source terminal, and a drain terminal. The source terminal is respectively connected with a driving-voltage-signal terminal and a charge-voltage terminal via a first switch and a second switch. The charge-voltage terminal is connected with a data-voltage-signal terminal via a third switch. The gate terminal is connected with an initial-voltage-signal terminal via a fourth switch, and the gate terminal is connected with the drain terminal via a fifth switch. A first capacitor is connected with the gate terminal and the charge-voltage terminal, a second capacitor is connected with the gate terminal and a ground terminal. The present application further provides a pixel driving method and a display panel.
    Type: Application
    Filed: November 30, 2017
    Publication date: December 27, 2018
    Applicant: Shenzhen China Star Optoelectronics Semiconductor Display Technology Co., Ltd.
    Inventors: Xiaolong CHEN, Yi-Chien WEN, Ming-Jong JOU
  • Publication number: 20180374418
    Abstract: The present application provides a pixel driving circuit, which comprises a driving transistor, a first switch, a second switch, a third switch, a fourth switch, a first capacitor, a second capacitor, an initial-voltage-signal terminal, a data-voltage-signal terminal, and a driving-voltage-signal terminal. The driving transistor comprises a gate terminal, a source terminal, and a drain terminal. The first switch is disposed between the gate terminal and the drain terminal. The gate terminal is connected with the initial-voltage-signal terminal via the second switch. The source terminal is connected with the driving-voltage-signal terminal and the data-voltage-signal terminal via the third switch and the fourth switch, respectively. The first capacitor is connected between the gate terminal and a ground terminal. The second capacitor is connected between the gate terminal and the source terminal. The present application further provides a pixel driving method and a display panel.
    Type: Application
    Filed: November 30, 2017
    Publication date: December 27, 2018
    Applicant: Shenzhen China Star Optoelectronics Semiconductor Display Technology Co., Ltd.
    Inventors: Xiaolong CHEN, Yi-Chien WEN, Ming-Jong JOU
  • Publication number: 20180374421
    Abstract: The present application provides a pixel driving circuit, which comprises a driving transistor which comprises a gate terminal, a source terminal, and a drain terminal. The first switch is connected between the gate terminal and the drain terminal. The gate terminal is connected with the reset-voltage-signal terminal via the second switch. The source terminal is respectively connected with the driving-voltage-signal terminal and the data-voltage-signal terminal via the third switch and the fourth switch. The first capacitor is connected between the gate terminal and the charge-voltage terminal. The charge-voltage terminal is connected with a control terminal of the first switch. The second capacitor is connected between the gate terminal and the driving-voltage-signal terminal. The present application further provides a display panel.
    Type: Application
    Filed: November 30, 2017
    Publication date: December 27, 2018
    Applicant: Shenzhen China Star Optoelectronics Semiconductor Display Technology Co., Ltd.
    Inventors: Xiaolong CHEN, Yi-Chien WEN, Ming-Jong JOU