Patent ID: 6933528
Filing Date: 2005-08-23
Classification: G02F

Abstract:
1. An in-plane switching mode active matrix type liquid crystal display device comprising: (a) a first substrate; (b) a second substrate located opposing said first substrate; and (c) a liquid crystal layer sandwiched between said first and second substrates, wherein said first substrate includes: (a1) a thin film transistor having a gate electrode, a drain electrode and a source electrode; (a2) a pixel electrode each associated to a pixel to be driven; (a3) a common electrode to which a reference voltage is applied; (a4) a data line; (a5) a scanning line; and (a6) a common electrode line, said gate electrode is electrically connected to said scanning line, said drain electrode is electrically connected to said data line, said source electrode is electrically connected to said pixel electrode, and said common electrode is electrically connected to said common electrode line, molecular axes of liquid crystal in said liquid crystal layer are rotated in a plane parallel with said first substrate by an electric field substantially parallel with a plane of said first substrate and to be applied between said pixel electrode and said common electrode, to thereby display images, said scanning line and said common electrode line are formed in a common layer in parallel with each other, said common electrode overlaps said data line and said scanning line with an interlayer insulating film existing therebetween, said common electrode line is singly formed at either side about said scanning line, said common electrode is electrically connected to said common electrode line through a contact hole formed throughout said interlayer insulating film, and said common electrode shields a gap formed between said scanning line and said common electrode line.