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:
Nov. 25, 1997
Filed:
Oct. 15, 1996
Chung Hon Lam, Williston, VT (US);
James S Nakos, Essex, VT (US);
Donald McAlpine Kenney, Shelburne, VT (US);
Eric Adler, Jericho, VT (US);
International Business Machines Corporation, Armonk, NY (US);
Abstract
The present invention is a sidewall connector providing a conductive path linking at least two conductive regions. The sidewall connector has a top portion comprising surface. A conductive member contacts the top portion, connecting the rail to a conductive region or to an external conductor. An etch stop layer located on a conductive region can be used to protect the conductive region during the directional etch to form the sidewall connector. A conductive bridge is then used to link exposed portions of the conductive region and the conductive sidewall rail, the conductive bridge extending across the thickness of the etch stop layer. A 'T' connector is formed by the process, starting with a pair of intersecting sidewalls wherein the two sidewalls have top edges at different heights where they intersect. The connector is used to form a strap for a DRAM cell.