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DATA DRIVER AND RELATED METHOD USED IN A DISPLAY DEVICE FOR SAVING SPACE

  • US 20040174347A1
  • Filed: 05/05/2003
  • Published: 09/09/2004
  • Est. Priority Date: 03/07/2003
  • Status: Active Grant
First Claim
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1. A method for driving data in a data driver the data driver driving at least a data line of a display device, the data driver comprising:

  • an input module comprising an N-bit circuit line for receiving an N-bit digital data set, the N-bit digital data set comprising m groups of digit data, wherein N and m are both integers greater than or equal to 2;

    a plurality of latches electrically connected to the input module, each latch temporarily storing a group of digit data of the digital data set;

    a plurality of shift registers for sequentially outputting a plurality of switch signals to determined sequence by which the m groups of digit data are transmitted to the plurality of latches; and

    a digital-to-analog converter electrically connected to the plurality of latches for receiving the digital data set outputted from the plurality of latches to transform the digital data set into an analog voltage signal and to output the analog voltage signal to the data line;

    the method comprising;

    utilizing the N-bit circuit line of the input module to receive the digital data set;

    utilizing the plurality of shift registers to sequentially output a plurality of switch signals to sequentially transmit the m groups of digit data to the plurality of latches for temporary storing;

    sequentially transmitting the temporarily stored m groups of digit data to the digital-to-analog converter according to the sequence for the digital-to-analog converter to receive the digital data set; and

    utilizing the digital-to-analog converter to transform the digital data set into the analog voltage signal and to output the analog voltage signal to the data line;

    wherein according to the sequence by which the shift register outputs the switch signals, a group of digit data among the m groups of digit data first arriving to the corresponding digital-to-analog converter will pre-charge the data line.

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