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公开(公告)号：US11862077B2
公开(公告)日：2024-01-02
申请号：US17780796
申请日：2021-03-09
Applicant: BOE TECHNOLOGY GROUP CO., LTD.
IPC: G09G3/20 , G09G3/3208 , G09G3/36
CPC classification number: G09G3/3208 , G09G3/20 , G09G3/2003 , G09G3/3607 , G09G2310/08 , G09G2320/0233 , G09G2320/0242 , G09G2320/0271 , G09G2320/0276 , G09G2320/0626 , G09G2320/0666 , G09G2320/0673 , G09G2360/16
Abstract: A method for improving image display quality, including: dividing a total gray scale range of a gamma voltage curve of a display apparatus to obtain gray scale ranges; obtaining data of gray scales of frame(s) of image to be displayed by the display apparatus, and calculating a ratio of data of gray scales in each gray scale range; adjusting a division value of a gamma voltage range corresponding to each gray scale range of the gamma voltage curve according to calculated ratios, so that a division value of a gamma voltage range corresponding to a gray scale range with a maximum ratio is less than a division value of a gamma voltage range corresponding to any remaining gray scale range; and outputting gamma voltages corresponding to the data of gray scales of the frame(s) of image to be displayed according to the adjusted gamma voltage curve.
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公开(公告)号：US11705069B2
公开(公告)日：2023-07-18
申请号：US17467365
申请日：2021-09-06
Applicant: BOE TECHNOLOGY GROUP CO., LTD.
Inventor： Song Meng , Zhongyuan Wu , Fei Yang
IPC: G09G3/3258 , G09G3/3291
CPC classification number: G09G3/3258 , G09G3/3291 , G09G2320/029 , G09G2330/12
Abstract: The present application discloses a method for compensating data voltages in a display apparatus. The method for individually compensating a data voltage to be applied to one of the multiple pixel circuits in the display apparatus. The method includes obtaining a threshold voltage of the driving transistor in the one of the multiple pixel circuits. Additionally, the method includes applying a testing voltage to a gate electrode of the driving transistor for charging the sense line up to a first time period to determine a first monitoring voltage associated with the sense line. The testing voltage is set to be a sum of the threshold voltage and a first setting voltage. Moreover, the method includes compensating a data voltage to be applied to the one of the multiple pixel circuits based on the first monitoring voltage and the threshold voltage.
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53.发明授权公开(公告)号：US11626078B2
公开(公告)日：2023-04-11
申请号：US16955986
申请日：2019-08-27
Applicant: BOE Technology Group Co., Ltd.
Inventor： Fei Yang , Yi Chen , Lirong Wang
IPC: G09G3/3275
Abstract: The present disclosure provides a detection circuit (10) and a driving method, a driving circuit (20), a driving apparatus (100) and a display apparatus. The detection circuit (10) comprises a switching sub-circuit (101) and an analog-to-digital conversion sub-circuit (102). The switching sub-circuit (101) may control on-off states between a sense line (SL) and a reference power terminal (VF), a reset power terminal (RST) and the analog-to-digital conversion sub-circuit (102) according to control signals provided by the external compensation circuit (01). Wherein, a sense signal may include pixel characteristic values or may be a reference power signal.
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公开(公告)号：US11348515B2
公开(公告)日：2022-05-31
申请号：US16765284
申请日：2020-01-08
Applicant: BOE TECHNOLOGY GROUP CO., LTD.
IPC: G09G3/20 , G09G3/32 , G09G3/36 , H01L27/144 , H01L27/32 , G09G3/3208
Abstract: A pixel compensation method, a pixel compensation device and a display device. The pixel compensation method includes: generating, according to grayscale data and compensation value of a sub-pixel in a current detection period, a source voltage signal to control light-emitting brightness of the sub-pixel; generating a sensing value according to the light-emitting brightness of the sub-pixel; and determining a compensation value of the sub-pixel in next detection period, according to the grayscale data, the compensation value, and the sensing value of the sub-pixel in the current detection period.
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55.发明授权公开(公告)号：US11341914B2
公开(公告)日：2022-05-24
申请号：US16481796
申请日：2019-01-21
Applicant: BOE TECHNOLOGY GROUP CO., LTD.
IPC: G09G3/3258 , G09G3/00 , H01L27/32
Abstract: The present disclosure relates to a method for driving an organic light emitting display device, a driving controller, and a display device. When startup detection is required to be performed on the display compensation parameter of the organic light emitting display device, the startup detection is performed on the display compensation parameter of the organic light emitting display device to obtain a new compensation parameter value, and startup compensation display is performed based on the new compensation parameter value. When shutdown detection is required to be performed on the display compensation parameter of the organic light emitting display device, the shutdown detection is performed on the organic light emitting display device to obtain an updated compensation parameter value, and the updated compensation parameter value is stored.
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Patent Agency Ranking
公开(公告)号：US20210407421A1
公开(公告)日：2021-12-30
申请号：US17467365
申请日：2021-09-06
Applicant: BOE TECHNOLOGY GROUP CO., LTD.
Inventor： Song Meng , Zhongyuan Wu , Fei Yang
IPC: G09G3/3258 , G09G3/3291
Abstract: The present application discloses a method for compensating data voltages in a display apparatus. The method for individually compensating a data voltage to be applied to one of the multiple pixel circuits in the display apparatus. The method includes obtaining a threshold voltage of the driving transistor in the one of the multiple pixel circuits. Additionally, the method includes applying a testing voltage to a gate electrode of the driving transistor for charging the sense line up to a first time period to determine a first monitoring voltage associated with the sense line. The testing voltage is set to be a sum of the threshold voltage and a first setting voltage. Moreover, the method includes compensating a data voltage to be applied to the one of the multiple pixel circuits based on the first monitoring voltage and the threshold voltage.
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57.发明授权公开(公告)号：US11081052B2
公开(公告)日：2021-08-03
申请号：US15931926
申请日：2020-05-14
Inventor： Fei Yang , Xiaolong Wei , Wenchao Bao , Min He
IPC: G09G3/3258 , G09G3/3291
Abstract: A method for detecting a threshold voltage of a driving transistor includes: obtaining at least one first threshold voltage of at least one driving transistor when each driving transistor is driven by a corresponding first driving signal; obtaining a threshold reference voltage of the driving transistor according to the at least one first threshold voltage; obtaining a second driving signal of the driving transistor according to the threshold reference voltage and the first driving signal of the driving transistor, a value of the second driving signal being greater than a value of the first driving signal; and obtaining a second threshold voltage of the driving transistor when the driving transistor is driven by the second driving signal.
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公开(公告)号：US10997898B2
公开(公告)日：2021-05-04
申请号：US17007120
申请日：2020-08-31
Applicant: BOE TECHNOLOGY GROUP CO., LTD.
Inventor： Lirong Wang , Fei Yang , Yi Chen , Yu Wang , Mingi Chu
IPC: G09G3/20 , G09G3/3291
Abstract: The present disclosure provides a compensation method for a display panel, a compensation system for a display panel, and a display device. The display panel includes a plurality of sub-pixels, and the compensation method includes: respectively determining a current aging degree coefficient of each sub-pixel according to historical display data of the sub-pixel; and, for each sub-pixel, performing aging compensation on the sub-pixel according to the current aging degree coefficient of the sub-pixel when a current frame is displayed. The present disclosure further provides a compensation system for a display panel, and a display device.
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公开(公告)号：US10971083B2
公开(公告)日：2021-04-06
申请号：US16620989
申请日：2018-02-12
Applicant: BOE TECHNOLOGY GROUP CO., LTD.
IPC: G09G3/32 , G09G3/3291
Abstract: A compensation method for a display panel, a compensation device for a display panel, and a display apparatus are provided. The display panel includes a plurality of pixel units, and each pixel unit includes a pixel circuit and a light-emitting element. The compensation method includes: detecting a threshold voltage of a drive transistor in the pixel circuit; detecting a maximum data voltage corresponding to a maximum brightness of the light-emitting element; and based on the threshold voltage, the maximum data voltage and an expected display brightness, calculating a compensation display data voltage in a normal display state after the display panel is compensated.
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公开(公告)号：US10971072B2
公开(公告)日：2021-04-06
申请号：US16829215
申请日：2020-03-25
IPC: G09G5/00 , G09G3/3258 , G09G3/20
Abstract: The present disclosure provides a method and a device for driving a display panel. The method of the present disclosure includes: determining a plurality of candidate time differences according to a highest brightness threshold of the sub-pixels of each color; for each candidate time difference, displaying, by the display panel, a same test picture using the candidate time difference, and detecting picture display quality of the display panel when the test picture is displayed by the display panel using the candidate time difference; and determining a candidate time difference corresponding to an optimal picture display quality as the time difference.
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