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:
Apr. 27, 2010
Filed:
Dec. 21, 2006
KE K. Lian, Palatine, IL (US);
John B. Szczech, Schaumburg, IL (US);
Jie Zhang, Buffalo Grove, IL (US);
Ke K. Lian, Palatine, IL (US);
John B. Szczech, Schaumburg, IL (US);
Jie Zhang, Buffalo Grove, IL (US);
Motorola, Inc., Schaumburg, IL (US);
Abstract
A stack for a bistable microelectronic switch. A porphyrin compound and a conductive polymer are sandwiched between two electrodes. The device exhibits a switching behavior at a certain voltage and can be used in arrays to form a memory device. When a first voltage is applied between the electrodes, the resistance across the two electrodes is very high, and when a increased voltage is applied, the resistance is generally two orders of magnitude lower. Copper phthalocyanine or 5, 10, 15, 20-tetrakis(4-methoxyphenyl)-21H, 23H-porphine cobalt(II) can be used as the bistable compound, and poly-(3,4-ethylenedioxythiophene) and poly-(styrenesulphonic acid) can be used as the conductive polymer.