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Stable driving scheme for active matrix displays

  • US 9,633,597 B2
  • Filed: 04/28/2014
  • Issued: 04/25/2017
  • Est. Priority Date: 04/19/2006
  • Status: Active Grant
First Claim
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1. A method of operating a pixel array having pixel circuits arranged in rows, comprising the step of repeating an operation cycle defining a frame period for the pixel circuits, including at each frame period:

  • programming a first of the pixel circuits in a first row of the rows of pixel circuits by activating a select line a first time to select the first pixel for programming;

    responsive to the select line being deactivated, driving the first pixel circuit while the select line remains deactivated; and

    activating the select line a second time, prior to the next frame period, to cause the first pixel circuit to be turned off to relax the first pixel circuit and to simultaneously reset a second pixel circuit in an other row of the rows for a programming operation to program the second pixel circuit,wherein the select line is deactivated between the first time it is activated and the second time it is activated, andwherein a period between the second time the select line is activated and an end of the frame period is fixed.

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