The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 18, 2002
Filed:
Aug. 07, 2000
Dae-hyuk Chung, Sungnam, KR;
Chang-lyong Song, Suwon, KR;
Samsung Electronics Co., Ltd., Suwon, KR;
Abstract
A method for manufacturing a cylindrical storage electrode of a semiconductor device includes forming a contact pad to be connected to an active region of a semiconductor substrate in an interlayer insulator film on the semiconductor substrate. Then, a silicon nitride layer as an etching stop layer is formed on the contact pad. Next, an insulating layer is formed on the silicon nitride layer. A portion of the surface of the silicon nitride layer is exposed by partially removing the insulating layer. Then, the exposed portion of the silicon nitride layer is removed using a wet etching process using a predetermined etchant to expose the surface of the contact pad. A conductive layer for a storage electrode is formed on the insulating layer and the surface of the exposed contact pad. Finally, a cylindrical storage electrode is completed by removing the upper portion of the conductive layer for a storage electrode, the insulating layer and the silicon nitride layer.