Patent ID: 8440509
Filing Date: 2013-05-14
Classification: G02F,H01L

Abstract:
1. A method for producing a semiconductor device comprising steps of: forming a first conductive layer over a substrate; forming a second conductive layer over the first conductive layer; forming a metallic film which has a function of a black mask over the second conductive layer; forming an interlayer insulating film over the metallic film; forming an opening in the interlayer insulating film to expose the first conductive layer at a bottom of the opening; forming an oxide conductive layer by a spin coating method so that the oxide conductive layer is in direct contact with the first conductive layer and fills the opening; removing part of the oxide conductive layer, thereby flattening an unevenness of the interlayer insulating film at an upper surface of the interlayer insulating film so that the upper surface of the interlayer insulating film and the oxide conductive layer filled in the opening provide a flattened surface; and forming a third conductive layer on and in direct contact with the oxide conductive layer and the interlayer insulating film at the flattened surface, wherein the first conductive layer and the third conductive layer are electrically connected to each other through the oxide conductive layer.