Patents by Inventor Yuchao Zeng
Yuchao Zeng 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: 12361872Abstract: Brightness compensation method and brightness compensation devices are provided. The brightness compensation method includes: obtaining brightness values of subpixels in a frame of display image; determining a first compensation gain according to the brightness values of the subpixels; obtaining position coordinates corresponding to the subpixels according to positions of the subpixels in a coordinate system; obtaining second compensation gains corresponding to the subpixels according to the position coordinates corresponding to the subpixels; and performing a brightness compensation on the frame of display image according to the second compensation gains corresponding to the subpixels and the first compensation gain.Type: GrantFiled: December 1, 2023Date of Patent: July 15, 2025Assignee: Shenzhen China Star Optoelectronics Semiconductor Display Technology Co., Ltd.Inventor: Yuchao Zeng
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Patent number: 12236895Abstract: A display panel and a display device are provided. The display panel includes pixel circuits arranged in an array and scan lines. Each pixel circuit in a N-th row of pixel circuits includes a driving transistor, a writing transistor, and a sensing transistor. A N-th scan line is configured to control charging of the N-th row of pixel circuits, a (N+1)-th scan line is configured to control the charging of a (N+1)-th row of pixel circuits, a gate of the writing transistor in each pixel circuit of the N-th row of pixel circuits is electrically connected to the N-th scan line, and a gate of the sensing transistor in each pixel circuit of the N-th row of pixel circuits is electrically connected to the (N+1)-th scan line.Type: GrantFiled: November 16, 2023Date of Patent: February 25, 2025Assignee: Shenzhen China Star Optoelectronics Semiconductor Display Technology Co., Ltd.Inventors: Yuchao Zeng, Pengfei Liang
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Patent number: 12170055Abstract: A compensation method for a display panel, which first selects a rectangular test area in a display area of the display panel, and then obtains a first average current value flowing through all sensing transistors and a second average current value flowing through all driving transistors in the rectangular test area, and then obtains a first current curve and a second current curve flowing through the driving transistors based on the first average current value and the second average current value under different driving voltages, and then determines a transmission loss coefficient of a data signal data according to the first current curve and the second current curve, and then compensates a driving voltage of each pixel circuit in the rectangular test area based on the transmission loss coefficient.Type: GrantFiled: November 3, 2023Date of Patent: December 17, 2024Assignee: Shenzhen China Star Optoelectronics Semiconductor Display Technology Co., Ltd.Inventor: Yuchao Zeng
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Patent number: 12165573Abstract: A display panel (11) with a low signal transmission power and large cabling space, and a semiconductor display apparatus including the display panel (11) are provided. The display panel (11) includes pixel areas (DB) that are of N rows and M columns and that are connected in a matrix, each pixel area (DB) includes pixel drive modules that are of Q rows and P columns and that are connected in a matrix, each pixel drive circuit (PD) is connected to at least one pixel unit (P), and the pixel drive circuit (PD) drives, based on to-be-displayed image data, the pixel unit (P) to emit light to display an image. All pixel areas (DB) in any column of the pixel areas (DB) are connected to data interfaces (DI) in a same group, and pixel areas (DB) in different columns are connected to data interfaces (DI) in different groups.Type: GrantFiled: March 20, 2023Date of Patent: December 10, 2024Assignee: HUAWEI TECHNOLOGIES CO., LTD.Inventors: Zhiwei Zheng, Yan Zhou, Yuchao Zeng
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Publication number: 20240386843Abstract: Brightness compensation method and brightness compensation devices are provided. The brightness compensation method includes: obtaining brightness values of subpixels in a frame of display image; determining a first compensation gain according to the brightness values of the subpixels; obtaining position coordinates corresponding to the subpixels according to positions of the subpixels in a coordinate system; obtaining second compensation gains corresponding to the subpixels according to the position coordinates corresponding to the subpixels; and performing a brightness compensation on the frame of display image according to the second compensation gains corresponding to the subpixels and the first compensation gain.Type: ApplicationFiled: December 1, 2023Publication date: November 21, 2024Applicant: Shenzhen China Star Optoelectronics Semiconductor Display Technology Co., Ltd.Inventor: Yuchao ZENG
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Publication number: 20240371341Abstract: A mobility detection method and apparatus, and a computer device are disclosed. The method includes: using a predetermined consecutive picture frames as an adjustment group, and setting a detection frame and an adjustment frame; extending a frame idle time of the detection frame, so that the frame idle time of the detection frame is correspondingly reduced; and performing mobility detection during the frame idle time of the detection frame. In this way, the current problem that the frame idle time does not satisfy the time required for the mobility detection when the frame rate is excessively high is resolved.Type: ApplicationFiled: December 27, 2021Publication date: November 7, 2024Applicant: SHENZHEN CHINA STAR OPTOELECTRONICS SEMICONDUCTOR DISPLAY TECHNOLOGY CO., LTD.Inventors: Taijiun Hwang, Yuchao Zeng
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Publication number: 20240257721Abstract: A compensation method for a display panel, which first selects a rectangular test area in a display area of the display panel, and then obtains a first average current value flowing through all sensing transistors and a second average current value flowing through all driving transistors in the rectangular test area, and then obtains a first current curve and a second current curve flowing through the driving transistors based on the first average current value and the second average current value under different driving voltages, and then determines a transmission loss coefficient of a data signal data according to the first current curve and the second current curve, and then compensates a driving voltage of each pixel circuit in the rectangular test area based on the transmission loss coefficient.Type: ApplicationFiled: November 3, 2023Publication date: August 1, 2024Applicant: Shenzhen China Star Optoelectronics Semiconductor Display Technology Co., Ltd.Inventor: Yuchao ZENG
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Publication number: 20240257767Abstract: A display panel and a display device are provided. The display panel includes pixel circuits arranged in an array and scan lines. Each pixel circuit in a N-th row of pixel circuits includes a driving transistor, a writing transistor, and a sensing transistor. A N-th scan line is configured to control charging of the N-th row of pixel circuits, a (N+1)-th scan line is configured to control the charging of a (N+1)-th row of pixel circuits, a gate of the writing transistor in each pixel circuit of the N-th row of pixel circuits is electrically connected to the N-th scan line, and a gate of the sensing transistor in each pixel circuit of the N-th row of pixel circuits is electrically connected to the (N+1)-th scan line.Type: ApplicationFiled: November 16, 2023Publication date: August 1, 2024Applicant: Shenzhen China Star Optoelectronics Semiconductor Display Technology Co., Ltd.Inventors: Yuchao ZENG, Pengfei LIANG
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Publication number: 20230237961Abstract: A display panel (11) with a low signal transmission power and large cabling space, and a semiconductor display apparatus including the display panel (11) are provided. The display panel (11) includes pixel areas (DB) that are of N rows and M columns and that are connected in a matrix, each pixel area (DB) includes pixel drive modules that are of Q rows and P columns and that are connected in a matrix, each pixel drive circuit (PD) is connected to at least one pixel unit (P), and the pixel drive circuit (PD) drives, based on to-be-displayed image data, the pixel unit (P) to emit light to display an image. All pixel areas (DB) in any column of the pixel areas (DB) are connected to data interfaces (DI) in a same group, and pixel areas (DB) in different columns are connected to data interfaces (DI) in different groups.Type: ApplicationFiled: March 20, 2023Publication date: July 27, 2023Inventors: Zhiwei ZHENG, Yan ZHOU, Yuchao ZENG
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Patent number: 11238774Abstract: A method of displaying an image and an image display device are disclosed. The method is implemented by calculating a total current value of subpixels of an image to be displayed, and comparing the total current value of the subpixels with a total current threshold, thereby to output a gain factor for adjusting brightness of an image to be displayed, so that an original subpixel dataset can be adjusted according to the gain factor, enabling power consumption to be correspondingly limited at the time when an image is displayed to meet a high brightness requirement.Type: GrantFiled: November 18, 2019Date of Patent: February 1, 2022Assignee: Shenzhen China Star Optoelectronies Semiconductor Display Technology Co., Ltd.Inventors: Yuchao Zeng, Zhenling Wang
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Publication number: 20210280124Abstract: A method of displaying an image and an image display device are disclosed. The method is implemented by calculating a total current value of subpixels of an image to be displayed, and comparing the total current value of the subpixels with a total current threshold, thereby to output a gain factor for adjusting brightness of an image to be displayed, so that an original subpixel dataset can be adjusted according to the gain factor, enabling power consumption to be correspondingly limited at the time when an image is displayed to meet a high brightness requirement.Type: ApplicationFiled: November 18, 2019Publication date: September 9, 2021Applicant: Shenzhen China Star Optoelectronics Semiconductor Display Technology Co., Ltd.Inventors: Yuchao ZENG, Zhenling WANG
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Patent number: 10748480Abstract: The present disclosure provides a method of compensating AMOLED pixel difference, including the steps of: fitting the driving voltage value and the driving current value of the reference pixel. Acquiring the threshold voltage, the coefficient and the power value corresponding to the reference pixel according to the fitting result. Acquiring the threshold change of the threshold voltage corresponding to the other pixel relative to the threshold voltage corresponding to the reference pixel and the coefficient ratio of the coefficient corresponding to the other pixel relative to the coefficient corresponding to the reference pixel. Compensating the other pixel difference according to the threshold change, the coefficient ratio and the power value. The disclosure makes the driving current under the same driving voltage be consistent, improves the uniformity of the light-emitting intensity of the AMOLED and enhances the display quality of the AMOLED display device.Type: GrantFiled: November 23, 2017Date of Patent: August 18, 2020Assignee: SHENZHEN CHINA STAR OPTOELECTRONICS SEMICONDUCTOR DISPLAY TECHNOLOGY CO., LTD.Inventors: Yuchao Zeng, Pengfei Liang
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Patent number: 10741119Abstract: Disclosed are a driving method and a driving system for reducing a residual image of AMOLED display. The driving method includes steps of: determining whether an image to be displayed is a static image; performing hierarchical segmentation on the static image if a determination result is yes; regulating an output brightness proportional coefficient of each pixel based on a hierarchical segmentation result; and outputting brightness of each pixel according to a corresponding output brightness proportional coefficient. The driving method can significantly reduce generation of a residual image when a static image is displayed.Type: GrantFiled: December 21, 2016Date of Patent: August 11, 2020Assignee: SHENZHEN CHINA STAR OPTOELECTRONICS TECHNOLOGY CO., LTD.Inventors: Yuchao Zeng, Tai Jiun Hwang
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Patent number: 10657896Abstract: The disclosure discloses a voltage compensation method, a compensation circuit, and a display device of OLED. The OLED voltage compensation method includes detecting and acquiring a brightness value of each pixel of the OLED display panel; converting the brightness value into a voltage code according to a Gamma curve; and acquiring compensation data according to the driving voltage code, and compensating the driving voltage code according to the compensation data to drive the OLED display panel to display according to the compensated driving voltage code. In this way, the accuracy of the OLED voltage compensation can be improved, and the display effect of the OLED display panel can be improved.Type: GrantFiled: October 21, 2017Date of Patent: May 19, 2020Assignee: SHENZHEN CHINA STAR OPTOELECTRONICS SEMICONDUCTOR DISPLAY TECHNOLOGY CO., LTD.Inventors: Yuchao Zeng, Tai-jiun Hwang
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Patent number: 10650743Abstract: Disclosed is a method for driving a pixel circuit. The method includes steps of obtaining an actual threshold voltage and an actual current-to-voltage conversion factor of a driving thin film transistor as well as actual luminous efficiency of an organic light emitting diode in sequence; and calculating a compensation data signal inputted to a source of a switching thin film transistor based on the obtained actual threshold voltage and actual current-to-voltage conversion factor of the driving thin film transistor and the obtained actual luminous efficiency of the organic light emitting diode.Type: GrantFiled: August 11, 2017Date of Patent: May 12, 2020Assignee: SHENZHEN CHINA STAR OPTOELECTRONICS TECHNOLOGY CO., LTD.Inventors: Yuchao Zeng, Pengfei Liang
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Patent number: 10565742Abstract: The present invention discloses an image processing method and apparatus. The method comprises the steps of: counting the number of pixels distributing in different brightness values in the target image; determining an initial central brightness value that maximum numbers of pixels have and determining an average brightness value of the target image; and adjusting a quantity distribution of the pixels in the target image at different brightness values, so as to make a new central brightness values that maximum number of pixels have closer to the average brightness value than the initial central brightness value, and to expand a range of pixel brightness values having preset brightness thresholds in which the new central brightness value is included. The present invention discloses an image processing method and apparatus, which enlarges the range around the central brightness value and adjusts the brightness distribution of the image to enhance the details of the image.Type: GrantFiled: November 23, 2017Date of Patent: February 18, 2020Assignee: SHENZHEN CHINA STAR OPTOELECTRONICS SEMICONDUCTOR DISPLAY TECHNOLOGY CO., LTD.Inventors: Yuchao Zeng, Tai-jiun Hwang
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Publication number: 20200043412Abstract: The disclosure discloses a voltage compensation method, a compensation circuit, and a display device of OLED. The OLED voltage compensation method includes detecting and acquiring a brightness value of each pixel of the OLED display panel; converting the brightness value into a voltage code according to a Gamma curve; and acquiring compensation data according to the driving voltage code, and compensating the driving voltage code according to the compensation data to drive the OLED display panel to display according to the compensated driving voltage code. In this way, the accuracy of the OLED voltage compensation can be improved, and the display effect of the OLED display panel can be improved.Type: ApplicationFiled: October 21, 2017Publication date: February 6, 2020Inventors: Yuchao ZENG, Tai-jiun HWANG
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Publication number: 20200034997Abstract: The present invention discloses an image processing method and apparatus. The method comprises the steps of: counting the number of pixels distributing in different brightness values in the target image; determining an initial central brightness value that maximum numbers of pixels have and determining an average brightness value of the target image; and adjusting a quantity distribution of the pixels in the target image at different brightness values, so as to make a new central brightness values that maximum number of pixels have closer to the average brightness value than the initial central brightness value, and to expand a range of pixel brightness values having preset brightness thresholds in which the new central brightness value is included. The present invention discloses an image processing method and apparatus, which enlarges the range around the central brightness value and adjusts the brightness distribution of the image to enhance the details of the image.Type: ApplicationFiled: November 23, 2017Publication date: January 30, 2020Inventors: Yuchao ZENG, Tai-jiun HWANG
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Publication number: 20200035154Abstract: The present disclosure provides a method of compensating AMOLED pixel difference, including the steps of: fitting the driving voltage value and the driving current value of the reference pixel. Acquiring the threshold voltage, the coefficient and the power value corresponding to the reference pixel according to the fitting result. Acquiring the threshold change of the threshold voltage corresponding to the other pixel relative to the threshold voltage corresponding to the reference pixel and the coefficient ratio of the coefficient corresponding to the other pixel relative to the coefficient corresponding to the reference pixel. Compensating the other pixel difference according to the threshold change, the coefficient ratio and the power value. The disclosure makes the driving current under the same driving voltage be consistent, improves the uniformity of the light-emitting intensity of the AMOLED and enhances the display quality of the AMOLED display device.Type: ApplicationFiled: November 23, 2017Publication date: January 30, 2020Inventors: Yuchao ZENG, Pengfei LIANG
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Publication number: 20190392753Abstract: Disclosed are a driving method and a driving system for reducing a residual image of AMOLED display. The driving method includes steps of: determining whether an image to be displayed is a static image; performing hierarchical segmentation on the static image if a determination result is yes; regulating an output brightness proportional coefficient of each pixel based on a hierarchical segmentation result; and outputting brightness of each pixel according to a corresponding output brightness proportional coefficient. The driving method can significantly reduce generation of a residual image when a static image is displayed.Type: ApplicationFiled: December 21, 2016Publication date: December 26, 2019Inventors: Yuchao ZENG, Tai Jiun HWANG