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).
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Publication number: 20190019454Abstract: 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: ApplicationFiled: August 29, 2017Publication date: January 17, 2019Inventor: Xiaolong CHEN
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Publication number: 20190019455Abstract: 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: ApplicationFiled: November 2, 2017Publication date: January 17, 2019Applicant: SHENZHEN CHINA STAR OPTOELECTRONICS SEMICONDUCTOR DISPLAY TECHNOLOGY CO., LTD.Inventor: Xiaolong CHEN
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Publication number: 20190019456Abstract: 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: ApplicationFiled: November 29, 2017Publication date: January 17, 2019Inventor: Xiaolong CHEN
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Publication number: 20190019453Abstract: 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: ApplicationFiled: August 29, 2017Publication date: January 17, 2019Inventor: Xiaolong CHEN
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Patent number: 10181289Abstract: 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: GrantFiled: August 29, 2017Date of Patent: January 15, 2019Assignee: Shenzhen China Star Optoelectronics Semiconductor Display Technology Co., Ltd.Inventor: Xiaolong Chen
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Publication number: 20190012963Abstract: 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: ApplicationFiled: September 11, 2017Publication date: January 10, 2019Inventor: Xiaolong CHEN
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Patent number: 10176759Abstract: 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: GrantFiled: December 20, 2016Date of Patent: January 8, 2019Assignee: SHENZHEN CHINA STAR OPTOELECTRONICS TECHNOLOGY CO., LTD.Inventors: Xiaolong Chen, Mingjong Jou, Yichien Wen
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Publication number: 20180374419Abstract: 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: ApplicationFiled: November 30, 2017Publication date: December 27, 2018Applicant: Shenzhen China Star Optoelectronics Semiconductor Display Technology Co., Ltd.Inventors: Xiaolong CHEN, Yi-Chien WEN, Ming-Jong JOU
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Publication number: 20180374418Abstract: 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: ApplicationFiled: November 30, 2017Publication date: December 27, 2018Applicant: Shenzhen China Star Optoelectronics Semiconductor Display Technology Co., Ltd.Inventors: Xiaolong CHEN, Yi-Chien WEN, Ming-Jong JOU
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Publication number: 20180374421Abstract: 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: ApplicationFiled: November 30, 2017Publication date: December 27, 2018Applicant: Shenzhen China Star Optoelectronics Semiconductor Display Technology Co., Ltd.Inventors: Xiaolong CHEN, Yi-Chien WEN, Ming-Jong JOU
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Publication number: 20180374420Abstract: 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: ApplicationFiled: November 30, 2017Publication date: December 27, 2018Applicant: Shenzhen China Star Optoelectronics Semiconductor Display Technology Co., Ltd.Inventors: Xiaolong CHEN, Yi-Chien WEN, Ming-Jong JOU
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Patent number: 10074309Abstract: The present invention provides an AMOLED pixel driving circuit and an AMOLED pixel driving method. The AMOLED pixel driving circuit utilizes the 6T1C structure pixel driving circuit with a specific drive timing and can effectively compensate the threshold voltage of the drive thin film transistor and can stabilize the current flowing through the organic light emitting diode to ensure the uniform brightness of the organic light emitting diode and improve the display effect of the pictures. The organic light emitting diode can emit light only in the light emitting stage to avoid the unnecessary irradiance of the organic light emitting diode to reduce the electrical power consumption.Type: GrantFiled: March 15, 2017Date of Patent: September 11, 2018Assignee: SHENZHEN CHINA STAR OPTOELECTRONICS TECHNOLOGY CO., LTD.Inventors: Xiaolong Chen, Yichien Wen, Mingjong Jou
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Publication number: 20180233080Abstract: The present invention provides an AMOLED pixel driving circuit and an AMOLED pixel driving method. The AMOLED pixel driving circuit utilizes the 6T1C structure pixel driving circuit with a specific drive timing and can effectively compensate the threshold voltage of the drive thin film transistor and can stabilize the current flowing through the organic light emitting diode to ensure the uniform brightness of the organic light emitting diode and improve the display effect of the pictures. The organic light emitting diode can emit light only in the light emitting stage to avoid the unnecessary irradiance of the organic light emitting diode to reduce the electrical power consumption.Type: ApplicationFiled: March 15, 2017Publication date: August 16, 2018Inventors: Xiaolong Chen, Yichien Wen, Mingjong Jou
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Publication number: 20180226026Abstract: The present disclosure provides a light emitting drive circuit and an organic light emitting display. The circuit includes: the reset memory module for resetting the driving module and for generating and storing a threshold offset voltage corresponding to the driving module; the driving module is used for generating a light emission drive voltage in a light emission phase in accordance with a power supply positive voltage, a stored threshold compensation voltage, and a light emission control signal; the light emitting module is configured to emit light, and the light emission driving voltage is a difference between the power supply positive voltage and the data voltage. The driving voltage (or drive current) of the light emission is independent of the threshold voltage for driving the thin film transistor. This eliminates the problem that the threshold voltage drift of the driving thin film transistor causes the screen display to be poor.Type: ApplicationFiled: January 18, 2017Publication date: August 9, 2018Applicant: Shenzhen China Star Optoelectronics Technology Co., Ltd.Inventors: Xiaolong CHEN, Ming-jong JOU
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Publication number: 20180211601Abstract: 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: ApplicationFiled: December 20, 2016Publication date: July 26, 2018Inventors: Xiaolong CHEN, Mingjong JOU, Yichien WEN
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Publication number: 20180061300Abstract: Disclosed is an OLED-PWM driving method, which includes looking up, based on a look-up table, assignment of bright subframes and non-bright subframes of each gray scale value in a whole frame, and scattering, based on the assignment of bright subframes and non-bright subframes of each gray scale value in the whole frame, corresponding gray scale energy according to a predetermined rule, so that the gray scale energy is uniformly distributed in the whole frame.Type: ApplicationFiled: January 9, 2017Publication date: March 1, 2018Inventors: Xiaolong Chen, Ming Jong Jou, Chih Hao Wu
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Patent number: 9893152Abstract: A semi-insulating silicon carbide monocrystal and a method of growing the same are disclosed. The semi-insulating silicon carbide monocrystal comprises intrinsic impurities, deep energy level dopants and intrinsic point defects. The intrinsic impurities are introduced unintentionally during manufacture of the silicon carbide monocrystal, and the deep energy level dopants and the intrinsic point defects are doped or introduced intentionally to compensate for the intrinsic impurities. The intrinsic impurities include shallow energy level donor impurities and shallow energy level acceptor impurities. A sum of a concentration of the deep energy level dopants and a concentration of the intrinsic point defects is greater than a difference between a concentration of the shallow energy level donor impurities and a concentration of the shallow energy level acceptor impurities, and the concentration of the intrinsic point defects is less than the concentration of the deep energy level dopants.Type: GrantFiled: December 6, 2011Date of Patent: February 13, 2018Assignee: Institute of Physics, Chinese Academy of SciencesInventors: Xiaolong Chen, Chunjun Liu, Tonghua Peng, Longyuan Li, Bo Wang, Gang Wang, Wenjun Wang, Yu Liu
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Patent number: 9881553Abstract: An OLED drive system raising a frame contrast and a drive method are disclosed. The OLED display panel is equally divided into a plurality of display divisions along a vertical direction. The brightness calculation module is employed to calculate average pixel brightnesses corresponding to the respective display divisions in the OLED display panel. On one hand, the power management module is employed to supply different reference voltages for the respective display divisions correspondingly according to the average pixel brightnesses of the respective display divisions in the OLED display panel, and respectively insert the reference voltages of the respective display divisions into reference voltage lines corresponding to the pixels of middle rows in the display divisions to make the reference voltages of the respective display divisions be different for raising the frame contrast.Type: GrantFiled: October 12, 2015Date of Patent: January 30, 2018Assignee: SHENZHEN CHINA STAR OPTOELECTRONICS TECHNOLOGY CO., LTD.Inventors: Xiaolong Chen, Chihhao Wu, Mingfeng Chen
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Patent number: 9819856Abstract: A method for a device to adjust a shooting parameter, includes: receiving a click signal triggered from a viewfinder displayed on a touchscreen; displaying, by taking a click position indicated by the click signal as a reference position, an adjusting control corresponding to a shooting parameter; receiving a sliding touch signal indicating a sliding touch operation on the adjusting control; and adjusting the shooting parameter according to the sliding touch signal.Type: GrantFiled: January 12, 2016Date of Patent: November 14, 2017Assignee: Xiaomi Inc.Inventors: Chong Guo, Ling Zhu, Xiaolong Chen, Xiaowei Hu, Haipo Zhang
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Patent number: D789974Type: GrantFiled: July 18, 2014Date of Patent: June 20, 2017Assignee: XIAOMI INC.Inventors: Chong Guo, Xiaolong Chen, Xiaowei Hu