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:
Jan. 18, 1994
Filed:
Jun. 30, 1992
Applicant:
Inventor:
Ji-hong Ahn, Seoul, KR;
Assignee:
Samsung Electronics Co., Ltd., Kyunggi, KR;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01L / ;
U.S. Cl.
CPC ...
437 52 ; 437 47 ; 437 48 ; 437 60 ;
Abstract
A semiconductor memory device includes a cell array region and a peripheral circuit region, wherein a channel is formed to surround the cell array region, on a border region between the cell array region and peripheral circuit region. Also, a method for the semiconductor memory device is provided. Therefore, the conventional problem of degraded reliability of the conductive layer due to the step between the cell array region and peripheral circuit region, can be prevented. At the same time, the surface planarization of the peripheral circuit region can be attained.