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:
Mar. 13, 2001
Filed:
Apr. 06, 2000
Hoon Ryu, Seoul, KR;
Won-Il Bae, Seoul, KR;
Samsung Electronics Co., Ltd., Suwon, KR;
Abstract
A semiconductor memory device has a sub word line driver structure and includes a main word line decoder driver, an address programming circuit, and a redundant main word line decoder driver. When row address bit signals are input, the main word line decoder driver drives a main word line corresponding to the row address bit signals regardless of a row replacement with redundant rows. If the row address bit signals correspond to programmed defective row address bit signals, the address programming circuit generates a redundant row select signal, in response to which the activated main word line is deactivated and a redundant main word line is activated. According to the redundant row replacement scheme of the present invention, access time is reduced without an increase of a layout area.