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Systems and method for fast compensation programming of pixels in a display

  • US 10,134,335 B2
  • Filed: 10/12/2017
  • Issued: 11/20/2018
  • Est. Priority Date: 12/09/2008
  • Status: Active Grant
First Claim
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1. A pixel circuit for coupling to a data line, a supply line and a monitor line to a light emitting device comprising:

  • a storage element coupled to the data line for storing a programming signal during a programming phase;

    a drive device for conveying a drive current from the supply line to the light emitting device according to the programming signal to emit light at a desired amount of luminance during an emission phase;

    an access switch for selectively connecting the storage element to the data line during the programming phase, and disconnecting the storage element from the data line during the emission phase; and

    a monitoring system comprising a switch connected to the monitoring line for applying a reference current to the drive device during a compensation phase, between the emission and programming phases, to develop a calibration factor for modifying the programming signal.

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