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. 26, 1999
Filed:
May. 23, 1996
Hanno Melzner, Unterhaching, DE;
Siemens Aktiengesellschaft, Muenchen, DE;
Abstract
A semiconductor array with self-adjusted contacts includes a substrate having a surface, at least two mutually spaced-apart doped regions extending in a first lateral direction on the surface, and insulated regions each being associated with a respective one of the doped regions and extending in the first lateral direction on the same side. Contact surfaces each extend in the first lateral direction above a respective one of the doped regions and at least partially above the insulated region associated with the one doped region. An insulating layer has contact holes each being formed therein above a respective one of the contact surfaces for receiving a self-adjusted contact. A method for producing a semiconductor array with self-adjusted contacts includes producing one of the contact surfaces with a first fragment being a part of the contact surface extending above the doped region and a second fragment being a part of the contact surface extending above the insulated region. The first fragment is produced with a non-photolithographic process avoiding edge location errors. The second fragment extends above the first fragment and therefore above the doped region by at least a length of a maximum edge location error, as long as no edge location errors occur.