Patent ID: 8723174
Filing Date: 2014-05-13
Classification: H01L

Abstract:
1. A contact structure provided on a substrate, comprising: a gate line; a gate insulating film covering the gate line; a first terminal provided on the gate insulating film in the vicinity of the gate line; a first electrode connected to the first terminal; a protection film covering the first terminal and the first electrode; and a second electrode provided on the protection film and connected to the first electrode via the first terminal, wherein the first terminal includes a metal oxide semiconductor, the first terminal has a first connection portion having an upper surface in contact with the first electrode, a covered portion in contact with the protection film at an upper surface spaced apart from the first electrode, and a first exposed portion having an upper surface exposed between the first connection portion and the covered portion through the first electrode and the protection film, a conductive layer having a relatively small electrical resistance is formed in an upper surface portion of each of the first connection portion and the first exposed portion, and the second electrode is in contact with the upper surface of the first exposed portion.