Patent ID: 7423716

Claim:
A liquid crystal display device of lateral electric field type comprising: a first substrate including a plurality of scanning signal lines; a plurality of common signal lines extending parallel to the scanning signal lines; a plurality of video signal lines crossing the scanning signal lines and the common signal lines and thin film transistors each formed in correspondence to each of the intersections of the signal lines; a second substrate facing the first substrate; and a liquid crystal layer sandwiched between the first and second substrates, wherein a plurality of pixels each being formed in each of areas defined on the first substrate by the scanning signal lines and the video signal lines, pixel electrodes, leveled with the video signal lines, each being connected to the thin film transistor corresponding to said each of the plurality of pixels, and a common electrode being provided to provide a reference potential to the plurality of pixels, wherein a mound-like insulating film is formed on the video signal line and covered by the common electrode, and a light shield electrode is formed underneath the video signal line, and wherein an edge of said mound-like insulating film is positioned on said light shield electrode.