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Display apparatus and display panel driver including software-controlled gate waveforms

  • US 9,607,566 B2
  • Filed: 03/28/2014
  • Issued: 03/28/2017
  • Est. Priority Date: 04/01/2013
  • Status: Active Grant
First Claim
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1. A display apparatus, comprising:

  • a display panel comprising gate lines and source lines;

    a gate driver configured to drive each of the gate lines; and

    a source driver configured to drive each of the source lines,wherein said source driver comprises a gate control signal generator configured to generate a gate control signal to control said gate driver,wherein said gate control signal generator comprises;

    a waveform control register;

    an internal digital signal generator configured to generate a plurality of multi-level internal digital signals, whose waveforms are different from each other, in response to a first register value held by said waveform control register, each of the multi-level internal digital signals including a 3-valued or more digital signal;

    a pulse swap circuit configured to output an internal gate control signal generated from the plurality of multi-level internal digital signals, the internal gate control signal including a digital signal; and

    a level shifter connected between the gate driver and the pulse swap circuit and configured to perform a level shift on the internal gate control signal to generate the gate control signal, andwherein said pulse swap circuit is responsive to a second register value held by said waveform control register for outputting as the internal gate control signal a signal selected from the plurality of multi-level internal digital signals or a signal generated by performing a logical operation on a plurality of signals selected from internal digital signals including the plurality of multi-level internal digital signals.

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