Digital-to-analog converter, data driver and display device using same

Digital-to-analog converter, data driver and display device using same

  • CN 1,980,068 B
  • Filed: 12/06/2006
  • Issued: 10/15/2014
  • Est. Priority Date: 12/06/2005
  • Status: Active Grant
First Claim
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1. a digital to analog converter, is characterized in that, comprising:

  • Reference voltage generating circuit, the mutually different m of a formation voltage value reference voltage, wherein m >

    =4;

    Decoder, an identical or different n voltage, wherein n >

    =3 are selected and exported to supplied with digital signal and a described m reference voltage based on described digital signal, from a described m reference voltage;

    AndAmplifying circuit, inputs n voltage of described selection, and exports with 2 from lead-out terminal n-1;

    2 n-2;

    ...;

    2 0ratio inputted a n voltage is weighted respectively to the voltage after average;

    Described digital to analog converter is according to inputted described digital signal, and maximum can be from a n power mutually different electric pressure of described lead-out terminal output m.

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