Patents by Inventor Yulong XIONG
Yulong XIONG 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: 11497096Abstract: A source driver includes at least one data input terminal, a plurality of data output terminals, at least two control terminals and a plurality of source driving circuits. Each source driving circuit is connected to a data input terminal of the at least one data input terminal, a data output terminal of the plurality of data output terminals and the at least two control terminals. The source driving circuit is configured such that: the source driving circuit converts a format of a data signal from the data input terminal; and in response to one of different control signals that is received by all the at least two control terminals, the source driving circuit has a corresponding different output impedance, and transmits the converted data signal to the data output terminal.Type: GrantFiled: August 11, 2020Date of Patent: November 8, 2022Assignees: HEFEI BOE DISPLAY TECHNOLOGY CO., LTD., BEIJING BOE TECHNOLOGY DEVELOPMENT CO., LTD.Inventors: Jianwei Sun, Liugang Zhou, Ke Dai, Yizhan Han, Yulong Xiong, Tao Li, Xiaofeng Yin, Maoyang Zhu, Pengjun Fang
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Patent number: 11380240Abstract: The preset disclosure provides a display control method, a timing controller IC and a display device. The method includes: acquiring a preset grayscale voltage of a target pixel unit and a backlight brightness of a backlight region corresponding to the target pixel unit, in a current output display frame; outputting a first grayscale voltage to the target pixel unit if the backlight brightness of the corresponding backlight region is less than or equal to a first preset brightness value; outputting a second grayscale voltage to the target pixel unit if the backlight brightness of the corresponding backlight region is greater than the first preset brightness value; wherein the second grayscale voltage is greater than the first grayscale voltage, and both the second grayscale voltage and the first grayscale voltage are greater than the preset grayscale voltage.Type: GrantFiled: June 22, 2020Date of Patent: July 5, 2022Assignees: HEFEI BOE DISPLAY TECHNOLOGY CO., LTD., BOE TECHNOLOGY GROUP CO., LTD.Inventors: Zhenlin Qu, Liugang Zhou, Ke Dai, Tao Li, Yulong Xiong, Yizhan Han, Jianwei Sun, Liu He, Yunyun Liang, Jun Wang, Qing Li, Xutong Chen, Liwei Zhou, Xiaofeng Yin
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Patent number: 11348547Abstract: The present disclosure provides a method and an apparatus for compensating the display voltage, a display apparatus and a display device, the method comprises acquiring, when performing an inversion operation with a polarity inversion signal for an arbitrary pixel, a preceding grayscale value and a subsequent grayscale value of the pixel, wherein the polarity inversion signal is configured to control the polarity of the pixel voltage of the pixel, the preceding grayscale value is a grayscale value of the pixel in a preceding frame before the inversion operation, and the subsequent grayscale value is the grayscale value of the pixel in a subsequent frame after the inversion operation.Type: GrantFiled: December 3, 2019Date of Patent: May 31, 2022Assignees: Hefei BOE Display Technology Co., Ltd., BOE TECHNOLOGY GROUP CO., LTD.Inventors: Yulong Xiong, Liugang Zhou, Tao Li, Yizhan Han, Jianwei Sun, Liu He, Yunyun Liang
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Patent number: 11250751Abstract: Some embodiments of the present disclosure provide a shift register unit, a gate driver, a driving method thereof and a display device. The shift register unit includes: an output circuit, configured to receive a clock signal and output the clock signal to an output signal terminal under control of a voltage of a pull-up control node; a pull-down control circuit, configured to receive a control voltage signal and control the voltage of the pull-up control node and a voltage of the output signal terminal according to the control voltage signal; and an output control circuit, configured to receive a first voltage signal and the control voltage signal, and control the voltage of the output signal terminal in response to the first voltage signal and the control voltage signal.Type: GrantFiled: September 12, 2019Date of Patent: February 15, 2022Assignees: HEFEI BOE DISPLAY TECHNOLOGY CO., LTD., BOE TECHNOLOGY GROUP CO., LTD.Inventors: Tao Li, Liugang Zhou, Ke Dai, Yizhan Han, Jianwei Sun, Yulong Xiong
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Patent number: 11250764Abstract: The present disclosure provides a mura compensation device, display panel, display device, and mura compensation method, which belongs to the field of panel technology. The mura compensation device includes a first flexible circuit board and a de-mura circuit, including a storage unit for storing mura compensation data, wherein the de-mura circuit is provided in the first flexible circuit board.Type: GrantFiled: December 11, 2019Date of Patent: February 15, 2022Assignees: Hefei BOE Display Technology Co., Ltd., BOE TECHNOLOGY GROUP CO., LTD.Inventors: Jianwei Sun, Liugang Zhou, Yizhan Han, Tao Li, Yulong Xiong
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Patent number: 11250798Abstract: A display driving method includes: determining, by a timing controller, an actual grayscale value of a sub-pixel image in an X-th row and a Y-th column according to a preset grayscale value of a sub-pixel image in an (X?1)-th row and the Y-th column and a preset grayscale value of the sub-pixel image in the X-th row and the Y-th column of an image frame to be displayed. The image frame to be displayed includes J rows and Q columns of sub-pixel images. X is greater than or equal to 2, and is less than or equal to J. Y is greater than or equal to 1, and is less than or equal to Q, and X, Y, J, and Q are all integers.Type: GrantFiled: August 14, 2020Date of Patent: February 15, 2022Assignees: HEFEI BOE DISPLAY TECHNOLOGY CO., LTD., BOE TECHNOLOGY GROUP CO., LTD.Inventors: Jun Wang, Liugang Zhou, Jingang Liu, Ke Dai, Xiaofeng Yin, Jianwei Sun, Liu He, Zhenlin Qu, Qing Li, Yunyun Liang, Yulong Xiong, Yu Quan
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Patent number: 11195451Abstract: The present disclosure provides a voltage compensation circuit and a voltage compensation method, a display driving circuit and a display device. The voltage compensation circuit includes: a voltage analyzing sub-circuit and a gamma voltage generating sub-circuit. The voltage analyzing sub-circuit is coupled to the display panel and configured to obtain pixel voltages of target pixels in the image to be detected; judge whether the display panel is abnormal according to the pixel voltages; generate a compensation control signal in response to that the display panel is abnormal. The gamma voltage generating sub-circuit is coupled to the voltage analyzing sub-circuit and is configured to compensate a gamma voltage corresponding to the image to be detected according to the compensation control signal so as to enable the pixel voltages of the target pixels to be consistent.Type: GrantFiled: December 18, 2019Date of Patent: December 7, 2021Assignees: HEFEI BOE DISPLAY TECHNOLOGY CO., LTD., BOE TECHNOLOGY GROUP CO., LTD.Inventors: Yizhan Han, Liugang Zhou, Jianwei Sun, Tao Li, Yulong Xiong, Chunheng Zhang, Qing Li
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Patent number: 11183131Abstract: A gray-scale drive table generating device is described that includes a sampling circuit configured to collect a first voltage between a drive electrode of a sub-pixel of a positive-frame and a common electrode and a second voltage between a drive electrode of a sub-pixel of a negative-frame and the common electrode in a display panel in each gray-scale; a processing circuit configured to generate a trigger signal when a voltage difference between the first voltage and the second voltage is greater than a voltage threshold; an adjustment circuit configured to adjust drive gray-scales of the sub-pixel of the positive-frame and/or the sub-pixel of the negative-frame in response to the trigger signal to make the voltage difference less than the voltage threshold; and a recording circuit configured to generate an adjusted gray-scale drive table according to the drive gray-scales of the sub-pixel of the positive-frame and the sub-pixel of the negative-frame in each gray-scale.Type: GrantFiled: January 7, 2020Date of Patent: November 23, 2021Assignees: Hefei BOE Display Technology Co., Ltd., BOE TECHNOLOGY GROUP CO., LTD.Inventors: Tao Li, Liugang Zhou, Ke Dai, Yizhan Han, Jianwei Sun, Yulong Xiong, Zhenlin Qu
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Patent number: 11114013Abstract: A display driving device, a display driving method, a display module and a display device are provided. The display driving device includes: a PWM signal generating circuit configured to generate a PWM signal; a PWM signal acquisition circuit, configured to identify whether the PWM signal output by the PWM signal generating circuit is at a high level or a low level; a gamma voltage debugging circuit, configured to debug a gamma voltage to obtain a first group of gamma voltage reference data corresponding to the PWM signal at the high level and a second group of gamma voltage reference data corresponding to the PWM signal at the low level in each gray-scale image; and a gamma voltage switching circuit.Type: GrantFiled: November 10, 2020Date of Patent: September 7, 2021Assignees: HEFEI BOE DISPLAY TECHNOLOGY CO., LTD., BOE TECHNOLOGY GROUP CO., LTD.Inventors: Qing Li, Liugang Zhou, Ke Dai, Yizhan Han, Liu He, Yunyun Liang, Jun Wang, Zhenlin Qu, Jianwei Sun, Yulong Xiong, Tao Li, Yu Quan, Xiaofeng Yin, Qian Zhou, Pengjun Fang
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Publication number: 20210225239Abstract: The present disclosure provides a mura compensation device, display panel, display device, and mura compensation method, which belongs to the field of panel technology. The mura compensation device includes a first flexible circuit board and a de-mura circuit, including a storage unit for storing mura compensation data, wherein the de-mura circuit is provided in the first flexible circuit board.Type: ApplicationFiled: December 11, 2019Publication date: July 22, 2021Inventors: Jianwei SUN, Liugang ZHOU, Yizhan HAN, Tao LI, Yulong XIONG
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Publication number: 20210225308Abstract: The present disclosure provides a method and an apparatus for compensating the display voltage, a display apparatus and a display device, the method comprises acquiring, when performing an inversion operation with a polarity inversion signal for an arbitrary pixel, a preceding grayscale value and a subsequent grayscale value of the pixel, wherein the polarity inversion signal is configured to control the polarity of the pixel voltage of the pixel, the preceding grayscale value is a grayscale value of the pixel in a preceding frame before the inversion operation, and the subsequent grayscale value is the grayscale value of the pixel in a subsequent frame after the inversion operation.Type: ApplicationFiled: December 3, 2019Publication date: July 22, 2021Applicants: Hefei BOE Display Technology Co., Ltd., BOE TECHNOLOGY GROUP CO., LTD.Inventors: Yulong Xiong, Liugang Zhou, Tao Li, Yizhan Han, Jianwei Sun, Liu He, Yunyun Liang
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Patent number: 11062669Abstract: The present disclosure provides a driving circuit and driving method for a liquid crystal display panel, and a display device. The driving circuit includes: a signal collector, configured to collect a backlight control signal; and a timing control chip, configured to determine whether a BLU is in the bright state time period or in the dark state time period, and retrieve a first gate control signal from a memory chip and output the first gate control signal to a gate driving circuit, when determining that the BLU is in the bright state time period, or retrieve a second gate control signal from the memory chip and output the second gate control signal to the gate driving circuit, when determining that the BLU is in the dark state time period.Type: GrantFiled: August 17, 2020Date of Patent: July 13, 2021Assignees: HEFEI BOE DISPLAY TECHNOLOGY CO., LTD., BOE Technology Group Co., Ltd.Inventors: Ke Dai, Yunyun Liang, Liugang Zhou, Zhenlin Qu, Liu He, Qing Li, Jun Wang, Yu Quan, Xiaofeng Yin, Liwei Zhou, Lin Zhang, Tao Li, Yulong Xiong
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Publication number: 20210150962Abstract: A display driving device, a display driving method, a display module and a display device are provided. The display driving device includes: a PWM signal generating circuit configured to generate a PWM signal; a PWM signal acquisition circuit, configured to identify whether the PWM signal output by the PWM signal generating circuit is at a high level or a low level; a gamma voltage debugging circuit, configured to debug a gamma voltage to obtain a first group of gamma voltage reference data corresponding to the PWM signal at the high level and a second group of gamma voltage reference data corresponding to the PWM signal at the low level in each gray-scale image; and a gamma voltage switching circuit.Type: ApplicationFiled: November 10, 2020Publication date: May 20, 2021Inventors: Qing LI, Liugang ZHOU, Ke DAI, Yizhan HAN, Liu HE, Yunyun LIANG, Jun WANG, Zhenlin QU, Jianwei SUN, Yulong XIONG, Tao LI, Yu QUAN, Xiaofeng YIN, Qian ZHOU, Pengjun FANG
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Patent number: 10984695Abstract: A display driving device is disclosed. The display driving device includes: a data signal end for providing a data signal, a source line, and a switching circuit. The source line can transmit the data signal to a first pixel circuit and a second pixel circuit. Along a direction of the source line, a distance between the second pixel circuit and the data signal end is larger than a distance between the first pixel circuit and the data signal end. The switching circuit is between the data signal end and the source line, and can be turned on in response to a first control signal, and can be turned on in response to a second control signal. A turned-on time period of the switching circuit in response to the second control signal is longer than a turned-on time period of the switching circuit in response to the first control signal.Type: GrantFiled: August 16, 2019Date of Patent: April 20, 2021Assignees: Hefei BOE Display Technology Co., Ltd., BOE Technology Group Co., Ltd.Inventors: Yulong Xiong, Liugang Zhou, Tao Li, Yizhan Han, Jianwei Sun, Liu He
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Publication number: 20210097950Abstract: The present disclosure provides a driving circuit and driving method for a liquid crystal display panel, and a display device. The driving circuit includes: a signal collector, configured to collect a backlight control signal; and a timing control chip, configured to determine whether a BLU is in the bright state time period or in the dark state time period, and retrieve a first gate control signal from a memory chip and output the first gate control signal to a gate driving circuit, when determining that the BLU is in the bright state time period, or retrieve a second gate control signal from the memory chip and output the second gate control signal to the gate driving circuit, when determining that the BLU is in the dark state time period.Type: ApplicationFiled: August 17, 2020Publication date: April 1, 2021Inventors: Ke Dai, Yunyun Liang, Liugang Zhou, Zhenlin Qu, Liu He, Qing Li, Jun Wang, Yu Quan, Xiaofeng Yin, Liwei Zhou, Lin Zhang, Tao Li, Yulong Xiong
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Publication number: 20210074201Abstract: The present disclosure provides a voltage compensation circuit and a voltage compensation method, a display driving circuit and a display device. The voltage compensation circuit includes: a voltage analyzing sub-circuit and a gamma voltage generating sub-circuit. The voltage analyzing sub-circuit is coupled to the display panel and configured to obtain pixel voltages of target pixels in the image to be detected; judge whether the display panel is abnormal according to the pixel voltages; generate a compensation control signal in response to that the display panel is abnormal. The gamma voltage generating sub-circuit is coupled to the voltage analyzing sub-circuit and is configured to compensate a gamma voltage corresponding to the image to be detected according to the compensation control signal so as to enable the pixel voltages of the target pixels to be consistent.Type: ApplicationFiled: December 18, 2019Publication date: March 11, 2021Inventors: Yizhan HAN, Liugang ZHOU, Jianwei SUN, Tao LI, Yulong XIONG, Chunheng ZHANG, Qing LI
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Publication number: 20210049969Abstract: A display driving method includes: determining, by a timing controller, an actual grayscale value of a sub-pixel image in an X-th row and a Y-th column according to a preset grayscale value of a sub-pixel image in an (X?1)-th row and the Y-th column and a preset grayscale value of the sub-pixel image in the X-th row and the Y-th column of an image frame to be displayed. The image frame to be displayed includes J rows and Q columns of sub-pixel images. X is greater than or equal to 2, and is less than or equal to J. Y is greater than or equal to 1, and is less than or equal to Q, and X, Y, J, and Q are all integers.Type: ApplicationFiled: August 14, 2020Publication date: February 18, 2021Inventors: Jun WANG, Liugang ZHOU, Jingang LIU, Ke DAI, Xiaofeng YIN, Jianwei SUN, Liu HE, Zhenlin QU, Qing LI, Yunyun LIANG, Yulong XIONG, Yu QUAN
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Publication number: 20210051780Abstract: A source driver includes at least one data input terminal, a plurality of data output terminals, at least two control terminals and a plurality of source driving circuits. Each source driving circuit is connected to a data input terminal of the at least one data input terminal, a data output terminal of the plurality of data output terminals and the at least two control terminals. The source driving circuit is configured such that: the source driving circuit converts a format of a data signal from the data input terminal; and in response to one of different control signals that is received by all the at least two control terminals, the source driving circuit has a corresponding different output impedance, and transmits the converted data signal to the data output terminal.Type: ApplicationFiled: August 11, 2020Publication date: February 18, 2021Inventors: Jianwei SUN, Liugang ZHOU, Ke DAI, Yizhan HAN, Yulong XIONG, Tao LI, Xiaofeng YIN, Maoyang ZHU, Pengjun FANG
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Publication number: 20210043154Abstract: A gray-scale drive table generating device is described that includes a sampling circuit configured to collect a first voltage between a drive electrode of a sub-pixel of a positive-frame and a common electrode and a second voltage between a drive electrode of a sub-pixel of a negative-frame and the common electrode in a display panel in each gray-scale; a processing circuit configured to generate a trigger signal when a voltage difference between the first voltage and the second voltage is greater than a voltage threshold; an adjustment circuit configured to adjust drive gray-scales of the sub-pixel of the positive-frame and/or the sub-pixel of the negative-frame in response to the trigger signal to make the voltage difference less than the voltage threshold; and a recording circuit configured to generate an adjusted gray-scale drive table according to the drive gray-scales of the sub-pixel of the positive-frame and the sub-pixel of the negative-frame in each gray-scale.Type: ApplicationFiled: January 7, 2020Publication date: February 11, 2021Inventors: Tao LI, Liugang ZHOU, Ke DAI, Yizhan HAN, Jianwei SUN, Yulong XIONG, Zhenlin QU
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Patent number: 10902803Abstract: The disclosure discloses a display panel, a voltage adjustment method thereof, and a display device, and the display panel includes: at least two reference sub-pixels; a voltage compensation element coupled respectively with respective reference sub-pixels; and a power management element coupled with the voltage compensation element, wherein the voltage compensation element is configured to acquire valid values of pixel voltage of the respective reference sub-pixels when the at least two reference sub-pixels receive the same data voltage, and to generate a compensation signal of gate off voltage for the purpose of making the acquired valid values of the pixel voltage of the respective reference sub-pixels uniform; and the power management element is configured to adjust a voltage value of the gate off voltage according to the compensation signal of the gate off voltage.Type: GrantFiled: November 23, 2018Date of Patent: January 26, 2021Assignees: HEFEI BOE DISPLAY TECHNOLOGY CO., LTD., BOE TECHNOLOGY GROUP CO., LTD.Inventors: Yizhan Han, Shou Li, Liugang Zhou, Tao Li, Yulong Xiong, Jianwei Sun