is adjacent a gate pad not shown applying a gate voltage signal the gate voltage signal is transmitted through the gate line 150 in a direction u201c z u201d which is from the first pixel region u201c a u201d to the third pixel region u201c c u201d when the gate voltage signal is transmitted from the first pixel region u201c a u201d to the third pixel region u201c c u201d a voltage drop occurs along the gate line 150 because of the direction u201c z u201d of the gate voltage signal the voltage drop is the highest at the third pixel region u201c c u201d the farthest pixel region away from the gate pad not shown in another aspect a common voltage signal is applied to both ends of the common line 154 from both sides of the ips lcd device therefore the voltage drop of the common voltage signal is the highest in the second pixel region u201c b u201d the first and third pixel regions u201c a u201d and u201c c u201d are associated with almost the same voltage drop lower than that of the second pixel region u201c b u201d when the above mentioned variation of the common voltage signal is involved with a kickback voltage u201c u03b4vp u201d the flicker problem of the lcd device occurs the kickback voltage u201c u03b4vp u201d is induced in a pixel voltage signal u201c vp u201d when a drain voltage signal is transmitted to the pixel electrode 166 a the kickback voltage u201c.