Patent ID: 9123632
Filing Date: 2015-09-01
Classification: H01L

Abstract:
1. A semiconductor device comprising: a first insulating layer having a first opening and a second opening; a first conductive layer in the first opening; a second conductive layer in the second opening; a third conductive layer in contact with a top surface of the first conductive layer; a fourth conductive layer in contact with a top surface of the second conductive layer; a first layer covering an end portion of the third conductive layer and being in contact with the top surface of the first conductive layer; a second layer covering an end portion of the fourth conductive layer and being in contact with the top surface of the second conductive layer; an oxide semiconductor layer over the third conductive layer, the fourth conductive layer, the first layer, and the second layer; a second insulating layer over the oxide semiconductor layer; and a fifth conductive layer over the second insulating layer and between the third conductive layer and the fourth conductive layer.