Patent ID: 9599871
Date: 2017-03-21
CPC Classifications: G02F,H01L

Claim:
1. A semiconductor device comprising: a substrate and a thin-film transistor, a gate line layer, and a source line layer which are supported by the substrate, wherein the thin-film transistor includes a gate electrode, a gate insulating layer over the gate electrode, a semiconductor layer on the gate insulating layer, a source electrode, and a drain electrode, the gate line layer includes a gate line and the gate electrode, the source line layer includes a source line and the source and the drain electrodes, the semiconductor device further includes: an interlevel insulating layer which is over the source and the drain electrodes and which includes a first insulating layer that contacts at least with a surface of the drain electrode; a first transparent conductive layer which is on the interlevel insulating layer and includes a first hole; a dielectric layer which is on the first transparent conductive layer and which covers a side surface of the first hole of the first transparent conductive layer; and a second transparent conductive layer over the dielectric layer so as to overlap with at least a portion of the first transparent conductive layer with the dielectric layer interposed between them, the interlevel insulating layer further includes a second insulating layer between the first insulating layer and the first transparent conductive layer, the first insulating layer is an inorganic insulating layer and the second insulating layer is an organic insulating layer, the dielectric layer includes a second hole, the first insulating layer includes a third hole, and the second insulating layer includes a fourth hole, the interlevel insulating layer and the dielectric layer include a first contact hole, a sidewall of which includes respective side surfaces of the second, the third, and the fourth holes, the sidewall of the first contact hole includes a first portion in which the side surfaces of the second and the third holes are aligned with each other and a second portion in which the side surfaces of the third and the fourth holes are aligned with each other, the second transparent conductive layer contacts with the drain electrode inside the first contact hole to define a contact portion where the second transparent conductive layer and the drain electrode contact with each other, and when viewed along a normal to the substrate, at least a portion of the contact portion overlaps with the gate line layer.