Patents by Inventor Yi-Chien Wen
Yi-Chien Wen 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: 11328678Abstract: A pixel driving circuit includes 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 includes 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. A pixel driving method and a display panel are also provided.Type: GrantFiled: September 27, 2020Date of Patent: May 10, 2022Assignee: SHENZHEN CHINA STAR OPTOELECTRONICS SEMICONDUCTOR DISPLAY TECHNOLOGY CO., LTD.Inventors: Xiaolong Chen, Yi-Chien Wen, Ming-Jong Jou
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Patent number: 11176884Abstract: OLED pixel driving circuit, array substrate and display device are provided. The pixel driving circuit comprises a driving control unit, a first light emitting unit and a second light emitting unit. Two OLEDs share one driving control unit, so the two OLEDs alternately emit light. In this way, light emitting time of the OLEDs is reduced, number of parasitic capacitors and data lines in a panel is reduced, and aperture ratio of the OLED device is increased; and OLEDs are enabled to be in reverse bias in a non-light emitting display frame, so that OLEDs do not have to be in a DC bias state for a long time, and thus, aging of the OLED device is slowed down. No other reverse bias voltage is connected externally, difficulty of tracing of the pixel circuit and crosstalk from a bias voltage line to other signal lines are reduced.Type: GrantFiled: November 23, 2017Date of Patent: November 16, 2021Assignee: Shenzhen Chins Star Optoelectronics Semiconductor Display Technology Co., Ltd.Inventors: Bobiao Chang, Xiaolong Chen, Yi-chien Wen
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Publication number: 20210012719Abstract: A pixel driving circuit includes 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 includes 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. A pixel driving method and a display panel are also provided.Type: ApplicationFiled: September 27, 2020Publication date: January 14, 2021Inventors: Xiaolong Chen, Yi-Chien Wen, Ming-Jong Jou
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Patent number: 10825399Abstract: A pixel driving circuit includes 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 includes 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. A pixel driving method and a display panel are also provided.Type: GrantFiled: November 6, 2019Date of Patent: November 3, 2020Assignee: SHENZHEN CHINA STAR OPTOELECTRONICS SEMICONDUCTOR DISPLAY TECHNOLOGY CO., LTD.Inventors: Xiaolong Chen, Yi-Chien Wen, Ming-Jong Jou
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Publication number: 20200258447Abstract: OLED pixel driving circuit, array substrate and display device are provided. The pixel driving circuit comprises a driving control unit, a first light emitting unit and a second light emitting unit. Two OLEDs share one driving control unit, so the two OLEDs alternately emit light. In this way, light emitting time of the OLEDs is reduced, number of parasitic capacitors and data lines in a panel is reduced, and aperture ratio of the OLED device is increased; and OLEDs are enabled to be in reverse bias in a non-light emitting display frame, so that OLEDs do not have to be in a DC bias state for a long time, and thus, aging of the OLED device is slowed down. No other reverse bias voltage is connected externally, difficulty of tracing of the pixel circuit and crosstalk from a bias voltage line to other signal lines are reduced.Type: ApplicationFiled: November 23, 2017Publication date: August 13, 2020Inventors: Bobiao CHANG, Xiaolong CHEN, Yi-chien WEN
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Publication number: 20200202794Abstract: A pixel driving circuit includes 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 includes 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. A pixel driving method and a display panel are also provided.Type: ApplicationFiled: November 6, 2019Publication date: June 25, 2020Applicant: Shenzhen China Star Optoelectronics Semiconductor Display Technology Co., Ltd.Inventors: Xiaolong CHEN, Yi-Chien WEN, Ming-Jong JOU
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Patent number: 10685602Abstract: The present disclosure provides an OLED pixel driving circuit and an OLED display apparatus utilizing the circuit scheme of 3T1C. The normal displaying mode and detecting mode of the pixel driving circuit both include two phases by controlling the conductions of different transistors. And, the pixel driving circuit is capable of implementing corresponding data compensation under the displaying mode according to the detected voltage threshold Vth of the driving TFT and the intrinsic conductivity factor value k of the aged OLED. This is capable of improving the uniformity of display and the illuminating efficiency.Type: GrantFiled: September 10, 2018Date of Patent: June 16, 2020Assignee: Shenzhen China Star Optoelectronics Semiconductor Display Technology Co., Ltd.Inventors: Xiaolong Chen, Yi-chien Wen, Mingjong Jou
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Patent number: 10607550Abstract: A digital control driving method and a driving display device are disclosed. In the method, dividing an image frame into K sub-frames by a hit using a digital control method is adopted. Wherein in one frame period of the image frame, an occupied time of each K sub-frame is the same, and driving times of the K sub-frames are different. The K sub-frames are driven to display on the display panel in a special transmission mode within one frame time of the image frame. The transmission voltage value has only two values, corresponding to the light emission and non-emission of the pixel points on the display panel. The source driver IC only output two grayscale voltages so as to effectively avoid a drift of the Vth of the driving TFT such that an entire brightness of the AMOLED panel is even to improve the display quality.Type: GrantFiled: July 20, 2018Date of Patent: March 31, 2020Assignee: SHENZHEN CHINA STAR OPTOELECTRONICS SEMICONDUCTOR DISPLAY TECHNOLOGY CO., LTD.Inventors: Xuebing Zhou, Yi-Chien Wen, Ming-Jong Jou
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Patent number: 10522079Abstract: 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: GrantFiled: November 30, 2017Date of Patent: December 31, 2019Assignee: Shenzhen China Star Optoelectronics Semiconductor Display Technology Co., LtdInventors: Xiaolong Chen, Yi-Chien Wen, Ming-Jong Jou
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Patent number: 10482815Abstract: 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: GrantFiled: November 30, 2017Date of Patent: November 19, 2019Assignee: Shenzhen China Star Optoelectronics Semiconductor Display Technology Co., LtdInventors: Xiaolong Chen, Yi-Chien Wen, Ming-Jong Jou
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Patent number: 10467953Abstract: The present disclosure relates to a pixel driving circuit and an organic light-emitting diode (OLED) display having the pixel driving circuit. The pixel driving circuit adopts a 6T2C (six transistors and two capacitors) structure to compensate a threshold voltage of the driving thin film transistor (TFT) in the pixel. As such, a current passing through the OLED may not be related to the threshold voltage of the driving TFT. So as to eliminate the improper image-displaying of the OLED display resulting from the drifting of the threshold voltage of the driving TFT.Type: GrantFiled: December 13, 2017Date of Patent: November 5, 2019Assignee: Shenzhen China Star Optoelectronics Semiconductor Display Technology Co., LtdInventors: Bobiao Chang, Xiaolong Chen, Yi-chien Wen, Ming-jong Jou
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Patent number: 10453391Abstract: 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: GrantFiled: November 30, 2017Date of Patent: October 22, 2019Assignee: Shenzhen China Star Optoelectronics Semiconductor Display Technology Co., LtdInventors: Xiaolong Chen, Yi-Chien Wen, Ming-Jong Jou
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Patent number: 10446080Abstract: 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: GrantFiled: November 30, 2017Date of Patent: October 15, 2019Assignee: Shenzhen China Star Optoelectronics Semiconductor Display Technology Co., LtdInventors: Xiaolong Chen, Yi-Chien Wen, Ming-Jong Jou
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Publication number: 20190279577Abstract: A digital control driving method and a driving display device are disclosed. In the method, dividing an image frame into K sub-frames by a hit using a digital control method is adopted. Wherein in one frame period of the image frame, an occupied time of each K sub-frame is the same, and driving times of the K sub-frames are different. The K sub-frames are driven to display on the display panel in a special transmission mode within one frame time of the image frame. The transmission voltage value has only two values, corresponding to the light emission and non-emission of the pixel points on the display panel. The source driver IC only output two grayscale voltages so as to effectively avoid a drift of the Vth of the driving TFT such that an entire brightness of the AMOLED panel is even to improve the display quality.Type: ApplicationFiled: July 20, 2018Publication date: September 12, 2019Inventors: Xuebing ZHOU, Yi-Chien WEN, Ming-Jong JOU
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Patent number: 10366654Abstract: 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: GrantFiled: October 26, 2017Date of Patent: July 30, 2019Assignee: Shenzhen China Star Optoelectronics Semiconductor Display Technology Co., Ltd.Inventors: Bobiao Chang, Xiaolong Chen, Yi-chien Wen
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Patent number: 10304377Abstract: 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: GrantFiled: October 17, 2017Date of Patent: May 28, 2019Assignee: SHENZHEN CHINA STAR OPTOELECTRONICS SEMICONDUCTOR DISPLAY TECHNOLOGY CO., LTD.Inventors: Xiaolong Chen, Yi-Chien Wen, Ming-Jong Jou
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Publication number: 20190103054Abstract: The present disclosure relates to a pixel driving circuit and an organic light-emitting diode (OLED) display having the pixel driving circuit. The pixel driving circuit adopts a 6T2C (six transistors and two capacitors) structure to compensate a threshold voltage of the driving thin film transistor (TFT) in the pixel. As such, a current passing through the OLED may not be related to the threshold voltage of the driving TFT. So as to eliminate the improper image-displaying of the OLED display resulting from the drifting of the threshold voltage of the driving TFT.Type: ApplicationFiled: December 13, 2017Publication date: April 4, 2019Applicant: Shenzhen China Star Optoelectronics Semiconductor Display Technology Co., Ltd.Inventors: Bobiao CHANG, Xiaolong CHEN, Yi-chien WEN, Ming-jong JOU
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Publication number: 20190066583Abstract: 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: ApplicationFiled: October 26, 2017Publication date: February 28, 2019Inventors: Bobiao CHANG, Xiaolong CHEN, Yi-Chien WEN
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Publication number: 20190043419Abstract: 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: ApplicationFiled: October 17, 2017Publication date: February 7, 2019Inventors: Xiaolong CHEN, Yi-Chien WEN, Ming-Jong JOU
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Publication number: 20190019457Abstract: A display device includes: a plurality of pixels each including an organic light emitting diode, a power voltage supply supplying a power positive voltage and a power negative voltage to the plurality of pixels, a voltage detector generating a compensation signal when detecting that the power positive voltage and a standard power positive voltage are different, a timing controller compensating a scan control signal and a data control signal based on the compensation signal, a scan driver generating a compensated scan voltage based on a compensated scan control signal and supplying the compensated scan voltage to the plurality of pixels and a data driver generating a compensated data voltage based on a compensated data control signal and supplying the compensated data voltage to the plurality of pixels, wherein the compensated scan voltage and the compensated data voltage allow a driving current of the organic light emitting diode to be constant.Type: ApplicationFiled: October 18, 2017Publication date: January 17, 2019Inventors: Bobiao Chang, Shu Wen, Yi-chien Wen, Ming-jong Jou