知搜-全球专利检索

  1. 登录
  2. 注册

搜索结果

24 条记录 (耗时 0.018 秒)

    Pixel compensation device, pixel compensation method and display apparatus
    1.
    发明授权
    Pixel compensation device, pixel compensation method and display apparatus 有权

    公开(公告)号：US11694624B2

    公开(公告)日：2023-07-04

    申请号：US17790085

    申请日：2021-06-02

    申请人： BOE TECHNOLOGY GROUP CO., LTD.

    发明人： Tangxiang Wang ,  Fei Yang ,  Yu Wang

    IPC分类号： G09G3/3258 ,  G09G3/3233

    CPC分类号： G09G3/3258 ,  G09G3/3233 ,  G09G2300/0819 ,  G09G2300/0842 ,  G09G2310/061 ,  G09G2320/0233 ,  G09G2320/043 ,  G09G2320/045

    摘要： A pixel compensation device includes a controller and at least one external compensation circuit. In the external compensation circuit, a first input circuit is configured to transmit a first voltage to a first terminal of a driving sub-circuit in a initialization phase, perform blanking in a pre-storage phase, and transmit a threshold compensation voltage to the first terminal in the data compensation writing phase; a second input circuit is configured to transmit a second voltage to a control terminal of the driving sub-circuit in the initialization phase and the pre-storage phase, so that a voltage of the first terminal changes from the first voltage to the threshold compensation voltage in the pre-storage phase; a sensing circuit is configured to sense the threshold compensation voltage in the data compensation writing phase; and the controller is configured to transmit a data voltage to the control terminal in the data compensation writing phase.

    Sampling method and device, sampling control method, device and system, and display device
    2.
    发明授权
    Sampling method and device, sampling control method, device and system, and display device 有权

    公开(公告)号：US10916164B2

    公开(公告)日：2021-02-09

    申请号：US16348315

    申请日：2018-08-28

    申请人： BOE TECHNOLOGY GROUP CO., LTD.

    发明人： Chen Song ,  Tangxiang Wang ,  Zhan Gao ,  Song Meng ,  Dongfang Yang

    IPC分类号： G09G3/3233 ,  G09G3/00

    摘要： The present disclosure discloses a sampling method, a sampling control method, a sampling device, a sampling control device, a sampling control system, and a display device. The present disclosure provides a sampling method for sampling pixel units disposed on a display substrate, the method including: the controller controlling a plurality of sampling modules to be simultaneously turned on, so that a plurality of sampling modules controlled by the controller are capable of receiving luminance information of the pixel units obtained through sampling of the sampling channel; the controller sequentially controlling a group of sampling channels to be simultaneously turned on, so that the group of sampling channels simultaneously sample the luminance information, and transmit the sampled luminance information to respective sampling modules connected to the group of sampling channels through the output terminals of the group of sampling channels.

    Pixel compensation circuit, display apparatus, and pixel compensation circuit driving method
    4.
    发明授权
    Pixel compensation circuit, display apparatus, and pixel compensation circuit driving method 有权

    公开(公告)号：US11289025B2

    公开(公告)日：2022-03-29

    申请号：US17255104

    申请日：2020-05-26

    申请人： BOE TECHNOLOGY GROUP CO., LTD.

    发明人： Tangxiang Wang ,  Yi Chen ,  Zhan Gao

    IPC分类号： G09G3/3258 ,  G09G3/3241

    摘要： A pixel compensation circuit includes: an integration circuit, a comparison circuit, a timing circuit, and a processor, wherein the integration circuit is configured to integrate driving currents of a pixel circuit, and then output a first voltage; the comparison circuit is configured to receive the first voltage, compare the first voltage with a first reference voltage, and then output a first logic control signal; the timing circuit is configured to acquire a first working duration; and the processor is configured to acquire the first working duration, obtain, according to correlations between the pre-obtained working duration and the pixel driving currents, a target driving current, corresponding to the first working duration, of the pixel circuit, and obtain a compensation parameter according to the target driving current.

    Digital-to-analog converter, conversion circuit and display device
    5.
    发明授权
    Digital-to-analog converter, conversion circuit and display device 有权

    公开(公告)号：US11025266B2

    公开(公告)日：2021-06-01

    申请号：US16489150

    申请日：2019-03-18

    申请人： BOE TECHNOLOGY GROUP CO., LTD.

    发明人： Tangxiang Wang ,  Chen Song ,  Zhan Gao ,  Yi Chen

    IPC分类号： H03M1/68 ,  G09G3/20 ,  H03M1/76

    摘要： Embodiments of the present disclosure provide a digital-to-analog converter, a conversion circuit and a display device. An M-bit digital-to-analog converter includes a higher M−N-bit digital-to-analog conversion circuit, a voltage conversion circuit, an output circuit. The higher M−N-bit digital-to-analog conversion circuit includes: a higher M−N-bit voltage division generation circuit, a first voltage selection circuit. The first voltage selection circuit selects a first voltage from the higher M−N-bit voltage division generation circuit based on a higher M−N-bit digital signal, to be output from a first voltage end. The voltage conversion circuit charges a capacitor circuit under the control of a first switch circuit and a second switch circuit, and discharges a second voltage to a second voltage end through the capacitor circuit. The output circuit controls the first voltage and the second voltage based on a lower N-bit digital signal, generates an analog voltage signal corresponding to an M-bit digital signal.

    Digtal-to-analog conversion circuit and method thereof, and display apparatus
    6.
    发明授权
    Digtal-to-analog conversion circuit and method thereof, and display apparatus 有权

    公开(公告)号：US10236904B1

    公开(公告)日：2019-03-19

    申请号：US15987201

    申请日：2018-05-23

    申请人： BOE TECHNOLOGY GROUP CO., LTD.

    发明人： Tangxiang Wang ,  Chen Song

    IPC分类号： H03M1/76 ,  G09G3/3225

    摘要： Embodiments of the present application provide a digital-to-analog conversion circuit, a method thereof and a display apparatus. The digital-to-analog conversion circuit comprises a voltage dividing sub-circuit, having 2m of voltage dividing signal terminals and 2n-m−1 of sub-voltage dividing signal terminals; a first voltage selecting sub-circuit, configured to receive the first bit to the (n−m)th bit of the digital signal, and convert it into a first analog signal; a second voltage selecting sub-circuit, configured to receive the (n-m+1)th bit to the nth bit of the digital signal and to convert it into a second analog signal; and a buffering sub-circuit, configured to generate an analog signal based on the first analog signal, the second analog signal and the signal from the ith voltage dividing signal terminal and to output the analog signal to an analog signal outputting terminal of the digital-to-analog conversion circuit.

    External compensation circuit and method, and display device
    9.
    发明授权
    External compensation circuit and method, and display device 有权

    公开(公告)号：US10943536B2

    公开(公告)日：2021-03-09

    申请号：US16441064

    申请日：2019-06-14

    申请人： BOE Technology Group Co., Ltd.

    发明人： Tangxiang Wang ,  Chen Song

    IPC分类号： G09G3/3233

    摘要： Provided are an external compensation circuit and method, and display device in the field of display techniques. The external compensation circuit includes a regulation sub-circuit that may collect a driving current loaded to a light-emitting unit and a reference current from a reference current source, and regulate potentials at two nodes connected to a compensation sub-circuit according to the collected current, to enable the compensation sub-circuit to calibrate a data signal to be input to a pixel circuit according to a potential difference between the two nodes.