Transflective liquid crystal display

  • US 7,286,192 B2
  • Filed: 06/07/2005
  • Issued: 10/23/2007
  • Est. Priority Date: 06/07/2005
  • Status: Active Grant
First Claim
Patent Images

1. A liquid crystal display device having an array of pixels, the liquid crystal operable in a first state and in a second state, said display device comprising:

  • a first substrate having a common electrode;

    a second substrate having a plurality of gate lines, a plurality of data lines and a plurality of common lines;

    the data lines and the gate lines arranged in different directions, anda liquid crystal layer disposed between the first and second substrates, wherein each of at least some of the pixels is associated with a data line, a first gate line and a second gate line, each said pixel comprising;

    a first sub-pixel area and a second sub-pixel area, the first sub-pixel area having a first pixel electrode electrically connected to the data line through a first switching element, the second sub-pixel area having a second pixel electrode electrically connected to the data line through a second switching element, the second pixel electrode further connected to a charge refresh capacitor through a third switching element, whereinwhen the liquid crystal display is operated in the first state, the first and second switching elements are closed (“

    ON”

    ) and the third switching element is open (“

    OFF”

    ), such that a first voltage potential between the first pixel electrode and the common electrode is substantially equal to a second voltage potential between the second pixel electrode and the common electrode, the second pixel electrode and the refresh capacitor having an electric charge associated therewith, andwhen the liquid crystal display is operated in the second state, the first and second switching elements are open (“

    OFF”

    ) and the third switching element is closed (“

    ON”

    ) so as to cause a redistribution of the electric charge associated with the second pixel electrode and the refresh capacitor, rendering the first voltage potential being different from the second voltage potential.

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