Patent ID: 8692251
Filing Date: 2014-04-08
Classification: G02F,H01L

Abstract:
1. A circuit board comprising: a substrate; a semiconductor layer; a gate insulating film; a gate electrode layer; and two or more interlayer insulating films, the semiconductor layer, the gate insulating film, the gate electrode layer, and the two or more interlayer insulating films being stacked on the substrate in this order, wherein the circuit board further includes a signal supply wiring and an interconnection wiring included in a circuit, the signal supply wiring being arranged in a layer upper than the two or more interlayer insulating films, the interconnection wiring included in a circuit being arranged between any adjacent two of the two or more interlayer insulating films, and the signal supply wiring includes a first portion which directly connects to the semiconductor layer through a first contact hole, the first contact hole penetrating the two or more interlayer insulating films, the signal supply wiring further includes a second portion which directly connects to the interconnection wiring included in a circuit through a second contact hole, the second contact hole penetrating at least one of the two or more interlayer insulating films, and the signal supply wiring is arranged to overlap with the gate electrode layer.