Patents by Inventor Qitai JI
Qitai JI 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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Patent number: 11302246Abstract: Provided are a pixel driving circuit, a driving method, a display panel and a display device. The pixel driving circuit includes: a data writing device, a voltage stabilizing storage device, a driving device and a light-emitting component; where the data writing device is configured for transmitting a data signal voltage; the driving device is configured for generating a driving current according to the data signal voltage transmitted by the data writing device; the voltage stabilizing storage device is configured for storing the data signal voltage transmitted to the driving device; the light-emitting component is configured for emitting light in response to the driving current generated by the driving device; where the voltage stabilizing storage device includes at least two voltage stabilizing storage sub-devices connected in parallel, each voltage stabilizing storage sub-device includes a capacitor, at least one of the voltage stabilizing storage sub-devices includes a switch device.Type: GrantFiled: June 29, 2020Date of Patent: April 12, 2022Assignee: Xiamen Tianma Micro-Electronics Co., Ltd.Inventors: Qitai Ji, Qingjun Lai, Xiao Li
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Publication number: 20200327852Abstract: Provided are a pixel driving circuit, a driving method, a display panel and a display device. The pixel driving circuit includes: a data writing device, a voltage stabilizing storage device, a driving device and a light-emitting component; where the data writing device is configured for transmitting a data signal voltage; the driving device is configured for generating a driving current according to the data signal voltage transmitted by the data writing device; the voltage stabilizing storage device is configured for storing the data signal voltage transmitted to the driving device; the light-emitting component is configured for emitting light in response to the driving current generated by the driving device; where the voltage stabilizing storage device includes at least two voltage stabilizing storage sub-devices connected in parallel, each voltage stabilizing storage sub-device includes a capacitor, at least one of the voltage stabilizing storage sub-devices includes a switch device.Type: ApplicationFiled: June 29, 2020Publication date: October 15, 2020Inventors: Qitai JI, Qingjun LAI, Xiao LI
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Patent number: 10439610Abstract: The present disclosure provides a force touch detection circuit, a force touch detection circuit method and a display panel. The force touch detection circuit includes: n force-sensing sensors, n first switches, a first end of the ith first switch being electrically connected with a first end of the ith force-sensing sensor, a second end of the ith first switch being electrically connected with a first test connection terminal; n second switches, a first end of the ith second switch being electrically connected with a second end of the ith force-sensing sensor, a second end of the ith second switch being electrically connected with a second test connection terminal; n control signal connection terminals, the ith control signal connection terminal is electrically connected with a control end of the ith first switch and a control end of the ith second switch.Type: GrantFiled: January 8, 2018Date of Patent: October 8, 2019Assignee: SHANGHAI TIANMA MICRO-ELECTRONICS CO., LTD.Inventors: Liang Liu, Feng Lu, Conghua Ma, Shaolong Ma, Zaiwen Zhu, Qitai Ji, Yuheng Zhang, Shui He, Yong Yuan, Qijun Yao
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Patent number: 10373699Abstract: Provided are an array substrate, a display panel and a display device, and the array substrate includes: at least one pressure sensor disposed in the non-display region; and the pressure sensor includes a first resistor, a second resistor, a third resistor and a fourth resistor; and a plurality of shift registers disposed in the non-display region, and the first resistor, the second resistor, the third resistor and the fourth resistor are disposed at least one of following positions: inside the shift register, between adjacent two of the plurality of shift registers, at a side of the plurality of shift registers close to the display region, and at a side of the plurality of shift registers away from the display region.Type: GrantFiled: January 9, 2018Date of Patent: August 6, 2019Assignee: WUHAN TIANMA MICRO-ELECTRONICS CO., LTD.Inventors: Zaiwen Zhu, Yong Yuan, Feng Lu, Qijun Yao, Qitai Ji
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Patent number: 10353508Abstract: Provided are a touch display panel and a touch display device. The touch display panel includes at least one semiconductor pressure-sensing touch device, and the semiconductor pressure-sensing touch device includes a first pressure-sensitive resistor, a second pressure-sensitive resistor, a third pressure-sensitive resistor and a fourth pressure-sensitive resistor. A first end of the first pressure-sensitive resistor and a first end of the second pressure-sensitive resistor are connected to a first power inputting terminal, a second end of the first pressure-sensitive resistor and a first end of the fourth pressure-sensitive resistor are connected to a first sense signal measuring terminal, a second end of the fourth pressure-sensitive resistor and a second end of the third pressure-sensitive resistor are connected to a second power inputting terminal.Type: GrantFiled: January 26, 2018Date of Patent: July 16, 2019Assignee: XIAMEN TIANMA MICRO-ELECTRONICS CO., LTD.Inventors: Jieliang Li, Yong Yuan, Zaiwen Zhu, Qitai Ji, Qijun Yao, Feng Lu
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Patent number: 10347701Abstract: An organic light-emitting display panel, a display device, and an organic light-emitting display motherboard are provided. The organic light-emitting display panel includes a base substrate, a metal wire, a first insulation layer, and a conductive portion. The metal wire has an upper surface opposing to the base substrate. A material of the metal wire includes a first metal. The first insulation layer covers the upper surface of the metal wire and includes at least one hollow portion penetrating through the first insulation layer and exposing a portion of the upper surface of the metal wire. The conductive portion is electrically connected to the metal wire, and is not overlapped with the at least one hollow portion. A work function of a material of the conductive portion is G1, a work function of metal silver is G2, a work function of the first metal is G3, and G1>G2>G3.Type: GrantFiled: February 28, 2018Date of Patent: July 9, 2019Assignee: Xiamen Tianma Micro-Electronics Co., Ltd.Inventors: Shui He, Yingteng Zhai, Yongxiang Lin, Hong Lin, Yong Yuan, Zaiwen Zhu, Qitai Ji
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Publication number: 20180190742Abstract: An organic light-emitting display panel, a display device, and an organic light-emitting display motherboard are provided. The organic light-emitting display panel includes a base substrate, a metal wire, a first insulation layer, and a conductive portion. The metal wire has an upper surface opposing to the base substrate. A material of the metal wire includes a first metal. The first insulation layer covers the upper surface of the metal wire and includes at least one hollow portion penetrating through the first insulation layer and exposing a portion of the upper surface of the metal wire. The conductive portion is electrically connected to the metal wire, and is not overlapped with the at least one hollow portion. A work function of a material of the conductive portion is G1, a work function of metal silver is G2, a work function of the first metal is G3, and G1>G2>G3.Type: ApplicationFiled: February 28, 2018Publication date: July 5, 2018Inventors: Shui HE, Yingteng ZHAI, Yongxiang LIN, Hong LIN, Yong YUAN, Zaiwen ZHU, Qitai JI
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Publication number: 20180150175Abstract: Provided are a touch display panel and a touch display device. The touch display panel includes at least one semiconductor pressure-sensing touch device, and the semiconductor pressure-sensing touch device includes a first pressure-sensitive resistor, a second pressure-sensitive resistor, a third pressure-sensitive resistor and a fourth pressure-sensitive resistor. A first end of the first pressure-sensitive resistor and a first end of the second pressure-sensitive resistor are connected to a first power inputting terminal, a second end of the first pressure-sensitive resistor and a first end of the fourth pressure-sensitive resistor are connected to a first sense signal measuring terminal, a second end of the fourth pressure-sensitive resistor and a second end of the third pressure-sensitive resistor are connected to a second power inputting terminal.Type: ApplicationFiled: January 26, 2018Publication date: May 31, 2018Applicant: XIAMEN TIANMA MICRO-ELECTRONICS CO., LTD.Inventors: Jieliang LI, Yong YUAN, Zaiwen ZHU, Qitai JI, Qijun YAO, Feng LU
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Publication number: 20180131373Abstract: The present disclosure provides a force touch detection circuit, a force touch detection circuit method and a display panel. The force touch detection circuit includes: n force-sensing sensors, n first switches, a first end of the ith first switch being electrically connected with a first end of the ith force-sensing sensor, a second end of the ith first switch being electrically connected with a first test connection terminal; n second switches, a first end of the ith second switch being electrically connected with a second end of the ith force-sensing sensor, a second end of the ith second switch being electrically connected with a second test connection terminal; n control signal connection terminals, the ith control signal connection terminal is electrically connected with a control end of the ith first switch and a control end of the ith second switch.Type: ApplicationFiled: January 8, 2018Publication date: May 10, 2018Applicant: SHANGHAI TIANMA MICRO-ELECTRONICS CO., LTD.Inventors: Liang Liu, Feng Lu, Conghua Ma, Shaolong Ma, Zaiwen Zhu, Qitai Ji, Yuheng Zhang, Shui He, Yong Yuan, Qijun Yao
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Publication number: 20180130543Abstract: Provided are an array substrate, a display panel and a display device, and the array substrate includes: at least one pressure sensor disposed in the non-display region; and the pressure sensor includes a first resistor, a second resistor, a third resistor and a fourth resistor; and a plurality of shift registers disposed in the non-display region, and the first resistor, the second resistor, the third resistor and the fourth resistor are disposed at least one of following positions: inside the shift register, between adjacent two of the plurality of shift registers, at a side of the plurality of shift registers close to the display region, and at a side of the plurality of shift registers away from the display region.Type: ApplicationFiled: January 9, 2018Publication date: May 10, 2018Applicant: WUHAN TIANMA MICRO-ELECTRONICS CO., LTD.Inventors: Zaiwen ZHU, Yong YUAN, Feng LU, Qijun YAO, Qitai JI