中科微点-全球专利检索

  1. Login
  2. Sign Up

Search Results

2 records (took 0.019 seconds)

    ELECTRONIC DEVICES WITH DISPLAYS FOR MITIGATING CATHODE NOISE
    1.
    发明申请
    ELECTRONIC DEVICES WITH DISPLAYS FOR MITIGATING CATHODE NOISE 审中-公开

    公开(公告)号：WO2023043579A1

    公开(公告)日：2023-03-23

    申请号：PCT/US2022/041092

    申请日：2022-08-22

    Applicant: APPLE INC.

    Inventor： LIN, Chin-wei ,  COLON-BERRIOS, Aida, R ,  GUI, Fan ,  AYGUN, Levent, Erdal ,  ESMAEILI RAD, Mohammad, Reza ,  TU, Ran ,  LIN, Xin ,  WANG, Yun

    IPC: G09G3/3233

    Abstract: A display may include an array of pixels. Each pixel in the array includes a drive transistor (Tdrive), a light-emitting-diode (26), a storage capacitor (Cst), a current boosting capacitor (Cboost) and an isolation transistor (Tiso) connected between a static voltage line (Vdc) and the current boosting capacitor. The pixel may further include emission transistors (Teml, Tem2), a data loading transistor (Tdata), a gate voltage setting transistor (Tref) and an anode reset transistor (Tar). A data refresh may include a initialization phase, a threshold voltage sampling phase, and a data programming phase. The threshold voltage sampling phase can be substantially longer than the data programming phase to decrease a current sampling level during the threshold voltage sampling phase, which helps reduce the display luminance sensitivity to temperature variations. During a data refresh, the isolation transistor can be turned on to provide current boosting. During emission periods, the isolation transistor is turned off to prevent cathode noise from potentially coupling through to one or more direct-current voltage nodes in the pixel.

Patent Agency Ranking