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:
Aug. 24, 2004
Filed:
Jan. 08, 2002
Applicant:
Inventor:
Kang-Yoon Lee, Kyungki-do, KR;
Assignee:
Samsung Electronics Co., Ltd., Suwon, KR;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01L 2/18242 ;
U.S. Cl.
CPC ...
H01L 2/18242 ;
Abstract
A method of forming a semiconductor device including a memory cell area having a plurality of memory cells and a peripheral circuit area for reading and writing data on the memory cells in the memory cell area of a semiconductor substrate is provided. Contact pads are formed on source/drain regions of transistors in the peripheral circuit area as well as in the memory cell area. The contact pads are concurrently formed on the source/drain regions of the transistors in the memory cell area and the peripheral circuit area. As a result, there is no step difference between the contact pads and, thus, it is easy to form metal contact plugs on the contact pads.