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:
Feb. 26, 2008
Filed:
Dec. 23, 2003
Michael Sommer, Raubling, DE;
Gerhard Enders, Olching, DE;
Michael Sommer, Raubling, DE;
Gerhard Enders, Olching, DE;
Infineon Technologies AG, Munich, DE;
Abstract
Memory cell having a trench capacitor that is constructed in a lower region of a substantially perpendicular trench hole, and which comprises an inner and an outer electrode, a dielectric layer being arranged between the inner and the outer electrodes, a vertical selection transistor that has a substantially perpendicular channel region, which is constructed adjacent to an upper region of the trench hole and which connects the inner electrode of the trench capacitor to a bit line, it being possible to construct a conductive channel as a function of the potential of a word line in the channel region, the channel region partially enclosing the trench hole in its upper region, and the associated work line at least partially surrounding the channel region.