Patent ID: 8951914
Filing Date: 2015-02-10
Classification: H01L

Abstract:
1. A manufacturing method of a device comprising: sequentially forming a stopper film, a first sacrificial film, a first support film, a second sacrificial film, a second support film, and a mask silicon film over a semiconductor substrate having a memory cell area and a peripheral circuit area; forming a hole pattern in the mask silicon film positioned in the memory cell area; forming a hole passing through the second support film, the second sacrificial film, the first support film, the first sacrificial film, and the stopper film using of the mask silicon film as a mask; forming a crown-shaped electrode covering an inner surface of the hole and connected to the second support film, the first support film, and the stopper film; forming a first opening in the second support film positioned in the memory cell area into an opening pattern which is designed such that a connection between the crown-shaped electrode and the second support film is at least partially maintained, and simultaneously forming a first peripheral opening in the peripheral circuit area by removing the second support film; removing at least a part of the second sacrificial film positioned in the memory cell area through the first opening, and simultaneously removing the second sacrificial film positioned in the peripheral circuit area through the first peripheral opening; forming a second opening in the first support film positioned in the memory cell area with use of the first opening, and simultaneously forming a second peripheral opening by removing the first support film positioned in the peripheral circuit area with use of the first peripheral opening; and removing the first sacrificial film through the second opening and the second peripheral opening respectively.