Patent ID: 7576556
Filing Date: 2009-08-18
Classification: G09G

Abstract:
1. A liquid crystal display device comprising: a plurality of data lines, each of the data lines being adapted to receive a corresponding data signal; a plurality of gate lines, each of the gate lines being adapted to receive a corresponding gate signal; a plurality of common lines, a plurality of odd common lines of the common lines being coupled to a first common voltage source, a plurality of even common lines of the common lines being coupled to a second common voltage source, the first common voltage source generating a first common voltage having only one voltage level during a defect detection cycle, the second common voltage source generating a second common voltage having different voltage levels during the defect detection cycle; and a plurality of rows of pixel units, each row of pixel units comprising a plurality of pixel units, wherein a plurality of pixel units of an odd row of pixel units in the rows of pixel units are coupled to a corresponding odd common line of the odd common lines, and a plurality of pixel units of an even row of pixel units in the rows of pixel units are coupled to a corresponding even common line of the even common lines.