Patent ID: 6633359
Filing Date: 2003-10-14
Classification: G02F

Abstract:
A liquid crystal display having an active matrix substrate with thin film transistors comprising:a first substrate; a plurality of scan lines formed on said first substrate and extending in a row direction; a plurality of first signal lines formed on said first substrate and intermittently extending in a column direction in areas excepting neighborhoods of said scan lines; an interlayer insulating film covering said scan lines and said first signal lines; a plurality of first openings formed through said interlayer insulating film, said first openings exposing said first signal lines; a plurality of second signal lines formed on said interlayer insulating film, said second signal lines being connected via said first openings to said first signal lines to form signal lines continuous in the column direction; pixel electrodes formed on said interlayer insulating film; and thin film transistors each disposed near a cross area between said scan line and said signal line, said thin film transistors including a plurality of island-shaped TFT polysilicon layers as a channel layer; a gate insulating film formed on said first substrate, said gate insulating film covering said TFT polysilicon layers, a gate electrode connected to and made of a same layer as said scan line, a source electrode connected to said signal line, and a drain electrode connected to said pixel electrode wherein the source electrode of said thin film transistor is connected to said second signal line via an opening including said first opening, and formed continuously through said interlayer insulating film and said gate insulating film.