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:
Jun. 17, 2003
Filed:
Sep. 27, 2001
Seiko Epson Corporation, , JP;
Abstract
A semiconductor memory device comprising: an active layer in which are formed a transistor source, channel and drain; a gate for the transistor; a layer of ferroelectric material; and an electrode for applying a voltage to the ferroelectric material; the electrode being spaced apart from the gate, the layer of ferroelectric material having two stable states of internal polarization, and the arrangement being such that the two states of polarization have a detectable difference in effect upon the transfer characteristic of the transistor. The arrangement enables cross-talk between memory cells upon write to be avoided and can mitigate physical interface problems between the ferroelectric material and the active layer.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile