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Illumination intensity control in electroluminescent display

  • US 6,541,921 B1
  • Filed: 10/17/2001
  • Issued: 04/01/2003
  • Est. Priority Date: 10/17/2001
  • Status: Expired due to Term
First Claim
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1. An intensity controller for an electroluminescent display having a first electrode and a second electrode, the intensity controller comprising:

  • a processor;

    a waveform generator controlled by the processor configured to generate a waveform signal;

    a drive circuit controlled by the processor and coupled to said waveform generator, said drive circuit configured to receive said waveform signal from said waveform generator and generate a substantially sinusoidal waveform across said first and second electrode to illuminate the electroluminescent display, said sinusoidal waveform further comprising a cycle set having a plurality n of cycles, and an intensity controller executed by said processor, said intensity controller configured to adjust an illumination intensity of said electroluminescent display by adding or removing at least one skip cycle in said cycle set.

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