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:
Sep. 22, 2020
Filed:
Jun. 14, 2019
Intel Corporation, Santa Clara, CA (US);
Rahul Agarwal, Rio Rancho, NM (US);
Srivardhan Gowda, Boise, ID (US);
Krishna Parat, Palo Alto, CA (US);
Intel Corporation, Santa Clara, CA (US);
Abstract
An integrated circuit memory cell includes a floating gate, a control gate, and a plurality of inter-poly dielectric (IPD) layers. The IPD layers include an IPD1 layer, an IPD2 layer, and an IPD3 layer, with the IPD2 layer interposed between the IPD1 and IPD3 layers. The IPD2 layer, which may be a nitride, does not flank the floating gate. Thus, no section of the floating gate is laterally between two sections of the IPD2 layer. Also, no section of the IPD2 layer of a first memory cell is between the floating gate of the first memory cell and a floating gate of an immediate adjacent memory cell of the same memory cell string. In some cases, an IPD4 layer is provided between the floating gate and the IPD3 layer. The IPD4 layer is relatively much thinner than layers IPD1-3 and may flank the floating gate, as may the IPD3 layer.