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Matrix element voltage sensing for precharge

  • US 6,594,606 B2
  • Filed: 05/09/2001
  • Issued: 07/15/2003
  • Est. Priority Date: 05/09/2001
  • Status: Expired due to Term
First Claim
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1. A method of determining a precharge voltage for current-driven devices in a matrix, the method comprising:

  • driving a selected current through a target device;

    determining a calibration time for a steady-state voltage developed by the target device conducting the selected current, the calibration time being based on a comparison between a plurality of display conduction voltage samples;

    sampling a calibration display conduction voltage at the calibration time;

    producing a calibration value representing the calibration voltage; and

    storing the calibration value for later use during normal operation.

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