Patents by Inventor Xuanyun Wang
Xuanyun Wang 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: 11955084Abstract: A driving circuit and a display panel are provided. The gate driver circuit includes a plurality of gate driving units which are cascaded. An Nth stage gate driving unit includes a pull-down control module, a pull-down module, a pull-up control module, a first pull-up voltage stabilizing module, a pull-up module, a second pull-up voltage stabilizing module, and a pull-down voltage stabilizing module. Stability of the gate driver circuit can be improved by increasing stability of a voltage level at a fourth node via the first pull-up voltage stabilizing module and the second pull-up voltage stabilizing module.Type: GrantFiled: July 13, 2021Date of Patent: April 9, 2024Assignee: WUHAN CHINA STAR OPTOELECTRONICS SEMICONDUCTOR DISPLAY TECHNOLOGY CO., LTD.Inventors: Xuanyun Wang, Chao Dai, Jianlong Wu, Ruiting He
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Patent number: 11929023Abstract: A pixel circuit, a method of driving the same, and a display device are provided. An input end of an anode reset transistor is connected to an output end of a driving transistor, and an output end of the anode reset transistor is connected to an anode of an organic light emitting diode to collect a leakage current from the anode of the organic light emitting diode through the anode reset transistor to the output end of the driving transistor in an light emitting state. Part of the collected current at the output end of the driving transistor enters the anode of the organic light emitting diode.Type: GrantFiled: November 23, 2020Date of Patent: March 12, 2024Assignee: WUHAN CHINA STAR OPTOELECTRONICS SEMICONDUCTOR DISPLAY TECHNOLOGY CO., LTDInventors: Xuanyun Wang, Chao Dai
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Publication number: 20240074237Abstract: A display panel includes multiple pixel cells, each pixel cell includes at least two sub-pixels, each sub-pixel includes a pixel circuit and a light-emitting element, and the pixel circuit includes a drive transistor. The at least two sub-pixels include a first sub-pixel and a second sub-pixel. The drive transistor of the pixel circuit in the first sub-pixel includes a first channel, and the drive transistor of the pixel circuit in the second sub-pixel includes a second channel. The first sub-pixel in the display panel is configured to emit green light, and the second sub-pixel in the display panel is configured to emit red light and/or blue light, and a width-to-length ratio of a first channel of a drive transistor in the first sub-pixel is greater than a width-to-length ratio of a second channel of a drive transistor in the second sub-pixel.Type: ApplicationFiled: November 6, 2023Publication date: February 29, 2024Applicant: Xiamen Tianma Display Technology Co., Ltd.Inventors: Xuanyun Wang, Jianlong Wu
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Publication number: 20240021152Abstract: The present disclosure discloses a pixel circuit and a display panel. The pixel circuit comprises a second wire, a first light-emitting control unit, a driving unit, and a compensation unit. A control terminal of the first light-emitting control unit and a control terminal of the compensation unit share the second wire, which can save a wire quantity of the pixel circuit, thereby improving display resolution; at the same time, a control terminal of the driving unit is only equipped with the compensation unit, which reduces a leakage path of the control terminal of the driving unit.Type: ApplicationFiled: September 6, 2021Publication date: January 18, 2024Applicant: WUHAN CHINA STAR OPTOELECTRONICS SEMICONDUCTOR DISPLAY TECHNOLOGY CO., LTD.Inventors: Xuanyun Wang, Cheng Chen, Chao Dai, Yixian Zhang
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Publication number: 20240021159Abstract: The present disclosure provides a pixel driving circuit, a driving method thereof, and a display panel. The pixel driving circuit includes a driving transistor; a compensation module including a first transistor, a compensation transistor for compensating a threshold voltage of the driving transistor, a second transistor, and a storage capacitor connected in series between a source or a drain of the compensation transistor and a gate of the driving transistor; and a data writing module including a data writing transistor connected to an upper plate of the storage capacitor, to improve display effect.Type: ApplicationFiled: September 28, 2023Publication date: January 18, 2024Applicant: WUHAN CHINA STAR OPTOELECTRONICS SEMICONDUCTOR DISPLAY TECHNOLOGY CO., LTD.Inventors: Xuanyun WANG, Chao DAI
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Publication number: 20240021163Abstract: A driving circuit and a display panel are provided. The gate driver circuit includes a plurality of gate driving units which are cascaded. An Nth stage gate driving unit includes a pull-down control module, a pull-down module, a pull-up control module, a first pull-up voltage stabilizing module, a pull-up module, a second pull-up voltage stabilizing module, and a pull-down voltage stabilizing module. Stability of the gate driver circuit can be improved by increasing stability of a voltage level at a fourth node via the first pull-up voltage stabilizing module and the second pull-up voltage stabilizing module.Type: ApplicationFiled: July 13, 2021Publication date: January 18, 2024Applicant: WUHAN CHINA STAR OPTOELECTRONICS SEMICONDUCTOR DISPLAY TECHNOLOGY CO., LTD.Inventors: Xuanyun Wang, Chao Dai, Jianlong Wu, Ruiting He
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Publication number: 20240013705Abstract: A pixel driving circuit, a display panel, and a display device are described. The pixel driving circuit has an initialization unit and a compensation unit. At least one of the compensation unit or the Initialization unit includes two transistors connected in series. An active layer of at least one of the two transistors has an oxide semiconductor, so as to utilize a low leakage current characteristic of the transistor with the oxide semiconductor to improve a light-emitting stability of the light-emitting device, which is beneficial for the display panel to achieve a high-screen refresh rate display.Type: ApplicationFiled: March 26, 2021Publication date: January 11, 2024Inventors: Xuanyun WANG, Chao DAI
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Publication number: 20230419893Abstract: The disclosure provides a pixel driving circuit and a display panel. The pixel driving circuit includes a first transistor, a second transistor, a first capacitor, a second capacitor, and an organic light emitting diode; the second transistor is a low-temperature polysilicon transistor. The disclosure can improve the phenomenon of screen flickering caused by large leakage current of the display panel, thereby being beneficial to improve the brightness uniformity.Type: ApplicationFiled: December 29, 2020Publication date: December 28, 2023Applicant: WUHAN CHINA STAR OPTOELECTRONICS SEMICONDUCTOR DISPLAY TECHNOLOGY CO., LTD.Inventors: Xuanyun Wang, Chao Dai, Jianlong Wu
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Patent number: 11854466Abstract: The present application discloses a display panel and a display device. The display panel includes a GOA circuit, a source driving chip, a multiplexing circuit, and a plurality of pixels distributed in an array; through improvement of the cascade connection between GOA units and the at least partially overlapping between working cycles of adjacent ones of the GOA units, more working cycles can be provided for the writing of the data signals to meet the writing requirements of the data signals during high-frequency drive display or ultra-high frequency drive display.Type: GrantFiled: January 28, 2021Date of Patent: December 26, 2023Assignee: WUHAN CHINA STAR OPTOELECTRONICS SEMICONDUCTOR DISPLAY TECHNOLOGY CO., LTD.Inventors: Xuanyun Wang, Chao Dai
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Publication number: 20230360600Abstract: A pixel driving circuit, a driving method thereof, and a display panel are proposed. The pixel driving circuit includes a switching transistor connected between a gate of the driving transistor and the initialization voltage node and between the first electrode of the driving transistor. The active layer of the switching transistor includes an oxide semiconductor with a characteristics of low leakage current. The display quality is improved when the display panel is operated in the low-frequency driving mode for display.Type: ApplicationFiled: April 20, 2021Publication date: November 9, 2023Applicant: WUHAN CHINA STAR OPTOELECTRONICS SEMICONDUCTOR DISPLAY TECHNOLOGY CO., LTD.Inventors: Xuanyun WANG, Chao DAI
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Patent number: 11804177Abstract: The present disclosure provides a pixel driving circuit, a driving method thereof, and a display panel. The pixel driving circuit includes a driving transistor; a compensation module including a first transistor, a compensation transistor for compensating a threshold voltage of the driving transistor, a second transistor, and a storage capacitor connected in series between a source or a drain of the compensation transistor and a gate of the driving transistor; and a data writing module including a data writing transistor connected to an upper plate of the storage capacitor, to improve display effect.Type: GrantFiled: September 9, 2020Date of Patent: October 31, 2023Assignee: WUHAN CHINA STAR OPTOELECTRONICS SEMICONDUCTOR DISPLAY TECHNOLOGY CO., LTD.Inventor: Xuanyun Wang
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Patent number: 11798461Abstract: The application discloses a pixel circuit and a driving method thereof. By synchronously resetting a potential of an input end of a light-emitting unit and a potential of a control end of a driving unit, the input end of the light-emitting unit can obtain a longer reset time; when the light-emitting unit emits light, a resetting transistor and an initialization transistor are both in an off state, which can better prevent leakage of the input end of the light-emitting unit, thereby improving display effect of the pixel circuit in a dark state or low gray level.Type: GrantFiled: October 27, 2020Date of Patent: October 24, 2023Assignee: Wuhan China Star Optoelectronics Semiconductor Display Technology Co., Ltd.Inventors: Xuanyun Wang, Chao Dai
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Patent number: 11749157Abstract: The present application provides a display panel and a display device. The display panel includes a gate driving circuit and a plurality of rows of pixel circuits. By electrically connecting a gate of a driving transistor in each of the pixel circuits to at least one oxide thin-film transistor, each of the pixel circuits has a low leakage characteristic, thereby realizing a low-frequency driving display of the pixel circuits. On this basis, a display time interval between two adjacent rows of the pixel circuits can be lengthened about half-frame time, thereby realizing an ultra-low-frequency driving display.Type: GrantFiled: February 7, 2022Date of Patent: September 5, 2023Assignee: WUHAN CHINA STAR OPTOELECTRONICS SEMICONDUCTOR DISPLAY TECHNOLOGY CO., LTD.Inventors: Xuanyun Wang, Chao Dai, Fang Qin
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Publication number: 20230237945Abstract: The present application provides a display panel and a display device. The display panel includes a gate driving circuit and a plurality of rows of pixel circuits. By electrically connecting a gate of a driving transistor in each of the pixel circuits to at least one oxide thin-film transistor, each of the pixel circuits has a low leakage characteristic, thereby realizing a low-frequency driving display of the pixel circuits. On this basis, a display time interval between two adjacent rows of the pixel circuits can be lengthened about half-frame time, thereby realizing an ultra-low-frequency driving display.Type: ApplicationFiled: February 7, 2022Publication date: July 27, 2023Inventors: Xuanyun WANG, Chao DAI, Fang QIN
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Publication number: 20230154384Abstract: The present application discloses a display panel and a display device. The display panel includes a GOA circuit, a source driving chip, a multiplexing circuit, and a plurality of pixels distributed in an array; through improvement of the cascade connection between GOA units and the at least partially overlapping between working cycles of adjacent ones of the GOA units, more working cycles can be provided for the writing of the data signals to meet the writing requirements of the data signals during high-frequency drive display or ultra-high frequency drive display.Type: ApplicationFiled: January 28, 2021Publication date: May 18, 2023Applicant: WUHAN CHINA STAR OPTOELECTRONICS SEMICONDUCTOR DISPLAY TECHNOLOGY CO., LTD.Inventors: Xuanyun Wang, Chao Dai
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Publication number: 20220358879Abstract: A pixel circuit, a method of driving the same, and a display device are provided. An input end of an anode reset transistor is connected to an output end of a driving transistor, and an output end of the anode reset transistor is connected to an anode of an organic light emitting diode to collect a leakage current from the anode of the organic light emitting diode through the anode reset transistor to the output end of the driving transistor in an light emitting state. Part of the collected current at the output end of the driving transistor enters the anode of the organic light emitting diode.Type: ApplicationFiled: November 23, 2020Publication date: November 10, 2022Applicant: WUHAN CHINA STAR OPTOELECTRONICS SEMICONDUCTOR DISPLAY TECHNOLOGY CO., LTD.Inventors: Xuanyun Wang, Chao Dai
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Patent number: 11488530Abstract: The present application provides a pixel circuit, a driving method thereof and a display device. An anti-leakage transistor is added between the gate of the driving transistor and the initialization transistor and between the gate of the driving transistor and the compensation transistor. The anti-leakage transistor includes an active layer with oxide semiconductor. Low leakage property of a metal oxide transistor is utilized to suppress potential changes of the gate of the driving transistor during a light-emitting diode emits light.Type: GrantFiled: September 17, 2020Date of Patent: November 1, 2022Assignee: WUHAN CHINA STAR OPTOELECTRONICS SEMICONDUCTOR DISPLAY TECHNOLOGY CO., LTD.Inventors: Xuanyun Wang, Sunghwan Cho, Chao Dai
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Patent number: 11471792Abstract: A filtering device and a filtering method are provided. The filtering device includes a bubble filtering system. The bubble filtering system at least includes a first bubble filtering system and a second bubble filtering system. The first bubble filtering system configured for performing a first bubble filtration in the solution. The second bubble filtering system configured for performing a second bubble filtration in the solution. Filter fineness of the second bubble filtering system is higher than filter fineness of the first bubble filtering system.Type: GrantFiled: March 19, 2019Date of Patent: October 18, 2022Assignee: WUHAN CHINA STAR OPTOELECTRONICS SEMICONDUCTOR DISPLAY TECHNOLOGY CO., LTD.Inventor: Xuanyun Wang
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Publication number: 20220319415Abstract: A display panel and a display device are provided. The display panel includes a plurality of pixel units and a plurality of pixel drive circuits. Each of the pixel units includes a plurality of pixels. At least one of the pixel drive circuits includes two different types of transistors, and is configured to respond to a light-emitting control signal to simultaneously drive two adjacent sub-pixels in the same pixel or two adjacent sub-pixels in two adjacent pixels. Therefore, a display uniformity is increased, and a display quality of the display panel is improved.Type: ApplicationFiled: August 20, 2020Publication date: October 6, 2022Applicant: Wuhan China Star Optoelectronics Semiconductor Display Technology Co., Ltd.Inventors: Xuanyun WANG, Chao DAI
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Publication number: 20220310009Abstract: The present disclosure provides a pixel driving circuit, a driving method thereof, and a display panel. The pixel driving circuit includes a driving transistor; a compensation module including a first transistor, a compensation transistor for compensating a threshold voltage of the driving transistor, a second transistor, and a storage capacitor connected in series between a source or a drain of the compensation transistor and a gate of the driving transistor; and a data writing module including a data writing transistor connected to an upper plate of the storage capacitor, to improve display effect.Type: ApplicationFiled: September 9, 2020Publication date: September 29, 2022Applicant: WUHAN CHINA STAR OPTOELECTRONICS SEMICONDUCTOR DISPLAY TECHNOLOGY CO., LTD.Inventor: Xuanyun Wang