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Driving system for active-matrix displays

  • US 10,043,448 B2
  • Filed: 09/15/2017
  • Issued: 08/07/2018
  • Est. Priority Date: 02/03/2012
  • Status: Active Grant
First Claim
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1. A method of using raw grayscale image data representing images to be displayed in a plurality of successive frames, to drive a display having a plurality of pixels that include a drive transistor and an organic light emitting device, said method comprising:

  • dividing each frame into at least a long sub-frame and a short sub-frame, a time period of the long sub-frame being greater than a time period of the short sub-frame; and

    for each pixel of the plurality of pixels and for each frame of the plurality of framessupplying the pixel with drive currents during each of said long sub-frame and said short sub-frame based upon a raw grayscale value for the pixel during the frame, such thatthe drive current supplied to the pixel during the long sub-frame is greater than the drive current supplied to the pixel during the short sub-frame for raw grayscale values in a preselected high range of grayscale values, andthe drive current supplied to the pixel during the long sub-frame is less than the drive current supplied to the pixel during the short sub-frame for raw grayscale values in a preselected low range of grayscale values less than the grayscale values of the preselected high range of grayscale values.

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