Patents by Inventor Wenchao Bao
Wenchao Bao 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).
-
Publication number: 20240169907Abstract: A control device includes a memory and a processor. The memory is configured to store a time comparison table. The processor is configured to determine whether a displayed image is a still image. When the displayed image is determined to be a still image, the time comparison table is queried for a corresponding still image judgment duration according to an average pixel level and a type of the still image.Type: ApplicationFiled: July 21, 2021Publication date: May 23, 2024Inventors: Xiaolong WEI, Song MENG, Jingbo XU, Pan LI, Wenchao BAO
-
Patent number: 11984066Abstract: A processing method and a processing device for pixel data, a display device, a display method, and a storage medium are provided. The processing method includes: determining a target pixel point in pixel points of a display frame image to be revised, a pixel data of each pixel point including S initial pixel data of different primary colors and a white initial pixel data; converting a white initial pixel data in a pixel data of the target pixel point into S equivalent pixel data of the different primary colors; obtaining S target pixel data of the different primary colors and a white target pixel data of the target pixel point according to the S equivalent pixel data and according to S initial pixel data of the different primary colors in the pixel data of the target pixel point, the white target pixel data corresponding to a 0 gray scale.Type: GrantFiled: February 15, 2019Date of Patent: May 14, 2024Assignees: Hefei Xinsheng Optoelectronics Technology Co., Ltd., BOE Technology Group Co., Ltd.Inventor: Wenchao Bao
-
Patent number: 11887683Abstract: The present disclosure provides a shift register unit, a driving method, a gate driving circuit and a display device. The shift register unit includes a pull-down node control circuit; the pull-down node control circuit is electrically connected to an input terminal, a reset terminal, a first voltage terminal, a second voltage terminal and a pull-down node, respectively, and is configured to, under the control of an input signal provided by the input terminal and a reset signal provided by the reset terminal, control the pull-down node to be electrically conducted to the first voltage terminal or the second voltage terminal, and control to hold a potential of the pull-down node.Type: GrantFiled: December 29, 2020Date of Patent: January 30, 2024Assignees: Hefei BOE Joint Technology Co., Ltd., BOE Technology Group Co., Ltd.Inventors: Zhidong Yuan, Yongqian Li, Can Yuan, Wenchao Bao
-
Patent number: 11749201Abstract: The present disclosure provides a display device and a circuit and method for acquiring voltages, and belongs to the field of display technologies. The display device includes: a display panel including a plurality of sub-pixels and a plurality of sensing lines, each of the sub-pixels being connected to one of the sensing lines; a reference voltage providing circuit configured to provide a reference voltage; a sampling circuit electrically connected to the sensing lines and the reference voltage providing circuit, respectively, and configured to acquire a voltage on each sensing line to obtain a first sampling value, and acquire the reference voltage provided by the reference voltage providing circuit to obtain a second sampling value; and a processing circuit electrically connected to the sampling circuit, and configured to correct the first sampling value based on the second sampling value and the reference voltage.Type: GrantFiled: October 28, 2020Date of Patent: September 5, 2023Assignees: HEFEI XINSHENG OPTOELECTRONICS TECHNOLOGY CO., LTD, BOE TECHNOLOGY GROUP CO., LTD.Inventors: Taejin Kim, Wenchao Bao
-
Publication number: 20230260586Abstract: The present disclosure provides a shift register unit, a driving method, a gate driving circuit and a display device. The shift register unit includes a pull-down node control circuit; the pull-down node control circuit is electrically connected to an input terminal, a reset terminal, a first voltage terminal, a second voltage terminal and a pull-down node, respectively, and is configured to, under the control of an input signal provided by the input terminal and a reset signal provided by the reset terminal, control the pull-down node to be electrically conducted to the first voltage terminal or the second voltage terminal, and control to hold a potential of the pull-down node.Type: ApplicationFiled: December 29, 2020Publication date: August 17, 2023Inventors: Zhidong YUAN, Yongqian LI, Can YUAN, Wenchao BAO
-
Patent number: 11645978Abstract: The present disclosure provides method and device for processing compensation data to be applied to a pixel circuit, and a display panel. The method includes: receiving M compensation data; determining a first threshold range according to (i?N)-th to (i?1)-th standard data, wherein midpoint and length of the first threshold range both depend on the (i?N)-th to (i?1)-th standard data; judging whether an i-th compensation data is in the first threshold range or not; in response to the i-th compensation data being in the first threshold range, determining the i-th compensation data as qualified and using it as an i-th standard data; and in response to the i-th compensation data not being in the first threshold range, determining the i-th compensation data as unqualified, replacing it with an average value of the (i?N)-th to (i?1)-th standard data, and using the replaced i-th compensation data as the i-th standard data.Type: GrantFiled: December 9, 2020Date of Patent: May 9, 2023Assignees: Hefei Xinsheng Optoelectronics Technology Co., Ltd., BOE TECHNOLOGY GROUP CO., LTD.Inventors: Wenchao Bao, Xiaolong Wei
-
Publication number: 20220328006Abstract: The present disclosure provides a display device and a circuit and method for acquiring voltages, and belongs to the field of display technologies. The display device includes: a display panel including a plurality of sub-pixels and a plurality of sensing lines, each of the sub-pixels being connected to one of the sensing lines; a reference voltage providing circuit configured to provide a reference voltage; a sampling circuit electrically connected to the sensing lines and the reference voltage providing circuit, respectively, and configured to acquire a voltage on each sensing line to obtain a first sampling value, and acquire the reference voltage provided by the reference voltage providing circuit to obtain a second sampling value; and a processing circuit electrically connected to the sampling circuit, and configured to correct the first sampling value based on the second sampling value and the reference voltage.Type: ApplicationFiled: October 28, 2020Publication date: October 13, 2022Inventors: Taejin Kim, Wenchao Bao
-
Publication number: 20220284853Abstract: A display module includes a display panel, a power supply driver, a voltage signal line, a sampling resistor and a detection and control circuit. The voltage signal line is connected between the display panel and the power supply driver. The sampling resistor is connected in series with the voltage signal line. The detection and control circuit is connected to two ends of the sampling resistor and the power supply driver. The detection and control circuit is configured to: detect a voltage across the sampling resistor or a current flowing through the sampling resistor; and control the power supply driver to generate a driving voltage equal to a preset value lower than a voltage threshold, if determining that the voltage across the sampling resistor is greater than or equal to the voltage threshold, or if determining that the current is greater than or equal to a current threshold.Type: ApplicationFiled: March 22, 2022Publication date: September 8, 2022Applicants: Hefei BOE Joint Technology Co., Ltd., BOE TECHNOLOGY GROUP CO., LTD.Inventors: Wenchao BAO, Song MENG, Min HE, Huihui LI
-
Publication number: 20220269123Abstract: The present disclosure provides a chip on film and a display device. The chip on film includes: a first end, wherein a first row of bonding terminals and a second row of bonding terminals are arranged on a first surface of the first end, the first row of bonding terminals and the second row of bonding terminals are spaced apart and insulated from each other, and the first row of bonding terminals is closer to a center of the chip on film than the second row of bonding terminals; and a plurality of leads, extending in a second direction and including a first part and a second part. A first end section of each lead of the first part serves as one of the first row of bonding terminals, a first end section of each lead of the second part serves as one of the second row of bonding terminals.Type: ApplicationFiled: September 17, 2021Publication date: August 25, 2022Inventors: Huihui LI, Wenchao BAO, Song MENG
-
Compensation method and compensation apparatus for organic light-emitting display and display device
Patent number: 11393394Abstract: A compensation method and a compensation apparatus for an organic light-emitting display, and a display device are disclosed. The compensation method includes: determining a write-back voltage of each sub-pixel to be compensated in a row to be compensated in a current frame according to a data voltage and a gain value of the sub-pixel to be compensated in the row to be compensated in the current frame, the gain value being greater than 1; and respectively writing back the write-back voltage of each sub-pixel to be compensated in the row to be compensated in the current frame correspondingly to the sub-pixel to be compensated in the row to be compensated in scan time of a blank period of the current frame.Type: GrantFiled: March 1, 2018Date of Patent: July 19, 2022Assignees: BOE Technology Group Co., Ltd., Hefei Xinsheng Optoelectronics Technology Co., Ltd.Inventors: Haixia Xu, Song Meng, Yue Wu, Wenchao Bao, Min He -
Patent number: 11348518Abstract: A method for driving a display panel and a display device are provided. The driving method includes supplying, during a data writing stage of each row of pixel circuits, a driving voltage VA[i] to the data line corresponding to each of the pixel circuits in a row, and supplying a compensation voltage VS to the second node of each of the pixel circuits in the row, and VA[i]=Vdata[i]+Vth[i]+VS, where Vdata[i] is an original data voltage of an ith pixel circuit of the pixel circuits, i is a positive integer, Vth[i] is a threshold voltage of the driving transistor of the ith pixel circuit, and a range from which a value of the compensation voltage VS is selected is [?Vth_min, 0), and Vth_min is a minimum value among all of the threshold voltages of the driving transistors of the pixel circuits of the display panel.Type: GrantFiled: May 20, 2019Date of Patent: May 31, 2022Assignees: HEFEI XINSHENG OPTOELECTRONICS TECHNOLOGY CO., LTD., BOE TECHNOLOGY GROUP CO., LTD.Inventors: Wenchao Bao, Min He, Chun Cao
-
Publication number: 20220122539Abstract: The present disclosure provides method and device for processing compensation data to be applied to a pixel circuit, and a display panel. The method includes: receiving M compensation data; determining a first threshold range according to (i?N)-th to (i?1)-th standard data, wherein midpoint and length of the first threshold range both depend on the (i?N)-th to (i?1)-th standard data; judging whether an i-th compensation data is in the first threshold range or not; in response to the i-th compensation data being in the first threshold range, determining the i-th compensation data as qualified and using it as an i-th standard data; and in response to the i-th compensation data not being in the first threshold range, determining the i-th compensation data as unqualified, replacing it with an average value of the (i?N)-th to (i?1)-th standard data, and using the replaced i-th compensation data as the i-th standard data.Type: ApplicationFiled: December 9, 2020Publication date: April 21, 2022Inventors: Wenchao BAO, Xiaolong WEI
-
Patent number: 11270642Abstract: A pixel unit includes a first sub-pixel circuit and a second sub-pixel circuit. The first sub-pixel circuit includes a first sub-pixel driving circuit and a first light-emitting element, and the second sub-pixel circuit includes a second sub-pixel driving circuit and a second light-emitting element. The first sub-pixel driving circuit and the second sub-pixel driving circuit are connected to a first data line, and the first sub-pixel driving circuit is connected to a first gate line, the second sub-pixel driving circuit is connected to the second gate line. The first sub-pixel driving circuit is configured to drive the first light-emitting element by a data voltage on the first data line under the control of the first gate line. The second sub-pixel driving circuit is configured to drive the second light-emitting element by the data voltage on the first data line under the control of the second gate line.Type: GrantFiled: November 5, 2019Date of Patent: March 8, 2022Assignees: HEFEI XINSHENG OPTOELECTRONICS TECHNOLOGY CO., LTD., BOE TECHNOLOGY GROUP CO., LTD.Inventors: Meng Li, Yongqian Li, Song Meng, Zhidong Yuan, Can Yuan, Haixia Xu, Wenchao Bao
-
Patent number: 11238800Abstract: The present disclosure provides a set-voltage generation unit, a set-voltage generation method and a display device. The set-voltage generation unit includes a voltage generation circuit. The set-voltage generation unit is configured to generate a set voltage according to a gamma main voltage such that a ratio between a variation of the set voltage and a variation of the gamma main voltage is a voltage coefficient K, and K is a positive number less than or equal to 1.Type: GrantFiled: January 22, 2020Date of Patent: February 1, 2022Assignees: HEFEI XINSHENG OPTOELECTRONICS TECHNOLOGY CO., LTD., BOE TECHNOLOGY GROUP CO., LTD.Inventors: Min He, Wenchao Bao, Chun Cao, Wei Chen
-
Patent number: 11217202Abstract: The present disclosure relates to a method for converting RGB image signals into RGBW image signals. The method includes converting RGB image signals of pixels of each received image frame into corresponding RGB luminance values respectively, performing a conversion from an RGB luminance value to an RGBW luminance value for each pixel, including performing a first conversion to the RGBW luminance value by determining a first conversion amount based on the corresponding RGB luminance value of the pixel to obtain a first RGBW luminance value of the pixel, performing a second conversion to the RGBW luminance value by determining a second conversion amount based on the first RGBW luminance values of the pixel and its adjacent one or more pixels to obtain a second RGBW luminance value of the pixel, and converting the second RGBW luminance values of the pixels of the image frame into corresponding RGBW image signals respectively.Type: GrantFiled: March 28, 2019Date of Patent: January 4, 2022Assignees: HEFEI XINSHENG OPTOELECTRONICS TECHNOLOGY CO., LTD., BOE TECHNOLOGY GROUP CO., LTD.Inventors: Min He, Chun Cao, Wenchao Bao
-
Patent number: 11205383Abstract: The present disclosure relates to a technical field of display, and provides a scan signal adjusting method, a scan signal adjusting device, and a display panel. The scan signal adjusting method is used to adjust a scan signal of a control end of a switching transistor in a pixel driving circuit. The method includes obtaining a threshold voltage of the switching transistor and adjusting a voltage of the scan signal during a turn-off period according to the threshold voltage of the switching transistor.Type: GrantFiled: November 15, 2018Date of Patent: December 21, 2021Assignee: BOE TECHNOLOGY GROUP CO., LTD.Inventors: Ming Wang, Wenchao Bao
-
Patent number: 11200827Abstract: A chromaticity compensation method, a chromaticity compensation device and a storage medium are disclosed. The chromaticity compensation method includes that, according to a preset standard chromaticity value and measured chromaticity values corresponding to a plurality of sub-display regions in a display region, chromaticity compensation values of the sub-display regions are determined, and the display region is divided into the plurality of sub-display regions in close arrangement, and each of the sub-display regions includes a plurality of sub-pixels; a data smoothing treatment is performed between the chromaticity compensation values of the sub-display regions that are adjacent, so as to determine the smoothed chromaticity compensation values of the sub-pixels in the sub-display regions; and upon display, chromaticity compensation of the sub-pixels are performed by adopting the smoothed chromaticity compensation values.Type: GrantFiled: June 3, 2019Date of Patent: December 14, 2021Assignees: Hefei Xinsheng Optoelectronics Technology Co., Ltd., BOE Technology Group Co., Ltd.Inventors: Wenchao Bao, Xiaolong Wei, Dongxu Han
-
Patent number: 11200818Abstract: The present disclosure provides a method and a device for abnormal data processing. The method includes: acquiring a queue of data to be detected, wherein the queue of data to be detected comprises M data arranged sequentially, M being a positive integer; filtering the queue of data to be detected with a filtering algorithm in at least two different orders respectively, wherein a window used in the filtering algorithm has a size of N, N being a positive integer smaller than M; determining abnormal data in the queue of data to be detected according to the filtering result; and performing data replacement on the abnormal data according to a preset rule.Type: GrantFiled: May 24, 2019Date of Patent: December 14, 2021Assignees: HEFEI XINSHENG OPTOELECTRONICS TECHNOLOGY CO., LTD., BOE TECHNOLOGY GROUP CO., LTD.Inventors: Wenchao Bao, Xiaolong Wei
-
Publication number: 20210335250Abstract: The present disclosure relates to a technical field of display, and provides a scan signal adjusting method, a scan signal adjusting device, and a display panel. The scan signal adjusting method is used to adjust a scan signal of a control end of a switching transistor in a pixel driving circuit. The method includes obtaining a threshold voltage of the switching transistor and adjusting a voltage of the scan signal during a turn-off period according to the threshold voltage of the switching transistor.Type: ApplicationFiled: November 15, 2018Publication date: October 28, 2021Inventors: Ming WANG, Wenchao BAO
-
Publication number: 20210335258Abstract: A method for driving a display panel and a display device are provided. The driving method includes supplying, during a data writing stage of each row of pixel circuits, a driving voltage VA[i] to the data line corresponding to each of the pixel circuits in a row, and supplying a compensation voltage VS to the second node of each of the pixel circuits in the row, and VA[i]=Vdata[i]+Vth[i]+VS, where Vdata[i] is an original data voltage of an ith pixel circuit of the pixel circuits, i is a positive integer, Vth[i] is a threshold voltage of the driving transistor of the ith pixel circuit, and a range from which a value of the compensation voltage VS is selected is [?Vth_min, 0), and Vth_min is a minimum value among all of the threshold voltages of the driving transistors of the pixel circuits of the display panel.Type: ApplicationFiled: May 20, 2019Publication date: October 28, 2021Inventors: Wenchao BAO, Min HE, Chun CAO