Patent ID: 6909487
Filing Date: 2005-06-21
Classification: G02F,H01L

Abstract:
1. An electro-optical device including an electro-optical material, comprising: a substrate; a first insulating layer; a first conductive layer formed on the first insulating layer, a second insulating layer formed to cover the first conductive layer, a second conductive layer formed on the second insulating layer; a contact hole at least penetrating the second insulating layer; at least one connecting portion facilitating highly integrated arrangement of elements on the substrate where the first conductive layer and the second conductive layer are electrically connected to each other because the first conductive layer contacts the second conductive layer in part of the side surface or the bottom surface of the contact hole with less than full overlap between the first conductive layer and the second conductive layer providing for dense arrangement of other connecting portions on the substrate; and an etching stop layer that is electrically floating and has a tolerance against etching of the first insulating layer being disposed at least in a region under the bottom surface of the contact hole.