Patent ID: 8785269
Filing Date: 2014-07-22
Classification: H01L

Abstract:
1. A method for manufacturing a semiconductor device, the method comprising: forming a first opening in a first insulating layer provided above a semiconductor substrate; forming a first contact plug by depositing a first conductive member in the first opening and removing a part of the first conductive member so as to expose the first insulating layer; forming a second insulating layer over the first insulating layer after forming the first contact plug; forming a second opening in the first insulating layer and the second insulating layer without exposing the first contact plug; forming a second contact plug by depositing a second conductive member in the second opening and removing a part of the second conductive member so as to expose the second insulating layer; and removing the second insulating layer so as to expose the first contact plug after forming the second contact plug, wherein the semiconductor substrate is provided with a first connection region to be connected to the first contact plug, a second connection region to be connected to the second contact plug, and a third insulating layer arranged so as to cover the first connection region and the second connection region, and wherein the forming of the first opening includes arranging a first photoresist pattern over the first insulating layer, forming the first opening in the first insulating layer so as to expose the third insulating layer using the first photoresist pattern, removing the first photoresist pattern after exposing the third insulating layer, and etching the third insulating layer so as to expose the first connection region through the first opening.