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Charge pump for producing display driver output

  • US 9,135,843 B2
  • Filed: 11/15/2012
  • Issued: 09/15/2015
  • Est. Priority Date: 05/31/2012
  • Status: Expired due to Fees
First Claim
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1. A display driver circuit configured to drive a display array with a waveform having a plurality of voltages, wherein a first subset of the plurality of voltages is different from a second subset of the plurality of voltages by a defined amount, the display driver circuit comprising:

  • power supply circuitry configured to generate the first subset of the plurality of voltages; and

    a charge pump having the first subset of the plurality of voltages as inputs and the second subset of the plurality of voltages as outputs on a plurality of overdrive lines and including a separate boost capacitor for each of the second subset of the plurality of voltages on the plurality of overdrive lines;

    wherein each of the plurality of overdrive lines is directly connected to its corresponding boost capacitor.

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