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公开(公告)号：US09881554B2
公开(公告)日：2018-01-30
申请号：US14907448
申请日：2015-09-16
Applicant: BOE TECHNOLOGY GROUP CO., LTD.
Inventor： Song Meng , Danna Song
IPC: G09G3/32 , G09G3/3258 , G09G3/20
CPC classification number: G09G3/3258 , G09G3/2014 , G09G2310/08 , G09G2360/16
Abstract: Embodiments of the present disclosure relate to a technical field of display technology, and provide a driving method for a pixel circuit and a driving device thereof. A problem of cost increase can be solved which is caused by an increase in a number of storages when adjustment is made by way of Gamma curve and table lookup, by means of the technical solutions according to embodiments of the present disclosure. The driving method of the pixel circuit includes acquiring brightness information of a display screen in a light-emitting phase (S101); determining a duty cycle of a pulse signal according to the brightness information (S102); inputting a high level to the first voltage terminal, and inputting the pulse signal with the duty cycle to a gate of the first switching transistor by the first gate line (S103).
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公开(公告)号：US09830890B2
公开(公告)日：2017-11-28
申请号：US15515349
申请日：2015-09-29
Applicant: BOE TECHNOLOGY GROUP CO., LTD.
CPC classification number: G09G5/393 , G09G3/20 , G09G3/2092 , G09G5/10 , G09G2320/0233 , G09G2320/0285 , H03M7/30 , H03M7/3059 , H03M7/3079
Abstract: A method and device for compressing and decompressing data information, a drive compensation method and device, and a display device. The method for compressing data information includes: acquiring data information corresponding to a sub pixel unit; establishing a distribution function model according to the data information; obtaining a valid option value section according to the distribution function model and a valid threshold value; and dividing the valid option value section into N compression sections, and compressing data information corresponding to each of the compression sections to M times of data information corresponding to all the sub pixel units according to a storage length P of the data information corresponding to the sub pixel unit to obtain N compressed data information blocks.
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公开(公告)号：US12211426B2
公开(公告)日：2025-01-28
申请号：US17922502
申请日：2021-09-08
Inventor： Huihui Li , Wenchao Bao , Song Meng , Jingbo Xu
IPC: G09G3/32
Abstract: An image dis play method applied to a display apparatus includes: establishing a correspondence table between a threshold voltage of a sub-pixel and a compensation voltage, the correspondence table including at least one adjustment interval, an adjustment interval including a first and second threshold voltage endpoint values, the first threshold voltage endpoint value being less than the second threshold voltage endpoint value; acquiring a threshold voltage of each sub-pixel; determining an adjustment interval in which the acquired threshold voltage is located according to the corresponding table; acquiring a compensation voltage corresponding to the acquired threshold voltage according to the correspondence table and the determined adjustment interval; and determining, in a case where the display apparatus is to display a black image, a data voltage required by each sub-pixel according to the acquired threshold voltage and the acquired compensation voltage.
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公开(公告)号：US12118906B2
公开(公告)日：2024-10-15
申请号：US17764992
申请日：2021-05-28
Inventor： Xiaolong Wei , Fei Yang , Song Meng , Jingbo Xu , Jianbo Xian
IPC: G09G3/00 , G09G3/3233
CPC classification number: G09G3/006 , G09G3/3233 , G09G2300/0842
Abstract: A method for sensing a display panel includes: sensing an electrical characteristic parameter of a driving transistor of a pixel circuit of a sub-pixel in an X-th row in a blank stage between an N-th frame and an (N+1)-th frame, wherein X is a random number, and both N and X are positive integers.
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公开(公告)号：US20240046879A1
公开(公告)日：2024-02-08
申请号：US17762347
申请日：2021-05-26
Applicant: BOE Technology Group Co., Ltd.
Inventor： Fei Yang , Song Meng , Zhiqiang Dong , Yi Chen , Jingbo Xu , Jianbo Xian
IPC: G09G3/3258 , G09G3/3291
CPC classification number: G09G3/3258 , G09G3/3291 , G09G2310/027 , G09G2320/045 , G09G2320/0693 , G09G2330/028
Abstract: A data driving integrated circuit includes a digital-to-analog converter configured to receive a respective digital data signal from a timing controller and convert the respective digital data signal to a respective analog data signal, which is output to a display panel through a respective data line; an analog-to-digital converter configured to receive a respective analog sensing signal from a respective sensing line in the display panel and convert respective analog sensing signal to a respective digital sensing signal, which is output to the timing controller; a first sensing switch configured to control a connection between a first reference voltage line and the respective sensing line; a second sensing switch configured to control a connection between a second reference voltage line and the respective sensing line; and a third sensing switch configured to control the connection between the analog-to-digital converter and the respective sensing line.
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Patent Agency Ranking
公开(公告)号：US11335266B2
公开(公告)日：2022-05-17
申请号：US16765846
申请日：2019-09-29
Inventor： Song Meng , Fei Yang , Chun Cao , Xiaolong Wei
IPC: G09G3/00 , G09G3/3258 , G09G3/3275
Abstract: A compensation method for a display panel and a display device are provided. The display panel includes a plurality of sub-pixels, and at least one of the plurality of sub-pixels includes a sensing capacitor. The method includes: obtaining a first voltage value and a second voltage value of the sensing capacitor, obtaining a temperature change amount of a sub-pixel corresponding to the sensing capacitor according to the first voltage value and the second voltage value of the sensing capacitor, determining a value of a compensation parameter of the sub-pixel according to the temperature change amount of the sub-pixel and a preset correspondence between the temperature change amount of the sub-pixel and the compensation parameter; and performing a compensation on a driving voltage of the sub-pixel according to the value of the compensation parameter as determined.
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公开(公告)号：US11302254B2
公开(公告)日：2022-04-12
申请号：US17044249
申请日：2020-04-14
IPC: G09G3/3258
Abstract: The present disclosure discloses a pixel circuit compensation method and device, and a display device. The method includes: when the display panel is in a preset display state, sensing a preset mobility compensation value corresponding to a driving transistor in the pixel circuit; according to the preset mobility compensation value, adjusting an initial mobility compensation value corresponding to the driving transistor to a target mobility compensation value, wherein a difference between the target mobility compensation value and the preset mobility compensation value is less than a threshold; based on the target mobility compensation value, when the display panel is in a non-display state, compensating a mobility of the driving transistor in a preset compensation manner.
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公开(公告)号：US11238793B2
公开(公告)日：2022-02-01
申请号：US16712045
申请日：2019-12-12
Applicant: BOE TECHNOLOGY GROUP CO., LTD.
Inventor： Song Meng , Zhongyuan Wu
IPC: G09G3/3233 , G09G3/3225
Abstract: A pixel compensation method includes: detecting driving transistors of pixels to obtain present characteristic values of the driving transistors of the pixels; extracting historical compensation characteristic values of the driving transistors of the pixels obtained in a previous display cycle of a screen; calculating a present compensation characteristic value of at least one driving transistor of the pixels according to a present characteristic value and a historical compensation characteristic value corresponding to the driving transistor of the pixels; and compensating a corresponding pixel according to the present compensation characteristic value of the driving transistor of the pixels.
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29.发明授权公开(公告)号：US11011114B2
公开(公告)日：2021-05-18
申请号：US16335009
申请日：2018-08-31
Applicant: BOE TECHNOLOGY GROUP CO., LTD.
Inventor： Song Meng , Zhongyuan Wu , Danna Song
IPC: G09G3/3258 , G09G3/20
Abstract: The present disclosure provides a compensation method, device, circuit for a display panel, a display panel and a display device. The display panel includes a plurality of pixel circuits, each of which comprises a driving transistor. The compensation method includes: obtaining a first compensation grayscale value GL1 and a second compensation grayscale value GL2 of a pixel circuit to be compensated; obtaining a first compensation luminance L1, a first gate-source voltage Vgs1 of the driving transistor, a second compensation luminance L2, and a second gate-source voltage Vgs2 of the driving transistor, wherein L1 and Vgs1 correspond to GL1, and L2 and Vgs2 correspond to GL2; obtaining a theoretical luminance L corresponding to an input grayscale value GL; calculating the compensation gate-source voltage V′gs by using L, L1, Vgs1, L2, and Vgs2; and obtaining an output compensation grayscale value GL′ according to V′gs.
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公开(公告)号：US10937351B2
公开(公告)日：2021-03-02
申请号：US15774175
申请日：2017-10-13
Applicant: BOE TECHNOLOGY GROUP CO., LTD.
Abstract: A Gamma-curve correction method for a display apparatus, and a display apparatus. The method includes: determining a standard Gamma curve according to the display apparatus; selecting a plurality of test gray scale values on the standard Gamma curve, and acquiring a plurality of target brightness values corresponding to the plurality of test gray scale values; adjusting an input gray scale value of the display apparatus to obtain a plurality of test-correction gray scale values, where the test-correction gray scale values are corresponding input gray scale values when display brightness of the display apparatus is equal to respective target brightness; generating an association relationship between input gray scale values and correction gray scale values, according to the plurality of test gray scale values and the plurality of test-correction gray scale values; and adjusting the input gray scale value to a corresponding correction gray scale value, according to the association relationship.
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