Patent ID: 8309959
Filing Date: 2012-11-13
Classification: G02F,H01L

Abstract:
1. A display device in which scanning signal lines, an insulation film, a semiconductor layer, and a conductor layer are sequentially stacked on a substrate, wherein the conductor layer includes a video signal line which intersects the scanning signal line as viewed in plan view, a drain electrode and a source electrode of a thin film transistor, and a connecting line which connects the video signal line and either one of the drain electrode and the source electrode, the semiconductor layer is formed so as to cover a region of the insulation film which is larger than a region where the conductor layer is formed as viewed in plan view, an opening portion which partially overlaps with the video signal line as viewed in plan view is formed in the scanning signal line, the connecting line is branched from the video signal line over the opening portion, and extends to the outside of the opening portion, and the opening portion is formed in a projecting manner toward both edges of the scanning signal line such that, as viewed in plan view, at least at a portion of the opening portion on a side where the connecting line advances into the opening portion, a width of the opening portion in the direction which intersects the connecting line is set larger than a width of the semiconductor layer which expands toward an outer side of the connecting line, and the width of the opening portion in the direction which intersects the connecting line at the portion of the opening portion is set larger than a width of the opening portion in the direction which intersects the connecting line at a crossing area of the video signal line and the opening portion.