Patent ID: 7939880
Filing Date: 2011-05-10
Classification: B82Y,H01L

Abstract:
1. A non-volatile memory cell comprising: a substrate; a first current electrode region located in the substrate; a second current electrode region located in the substrate; a layer of discrete charge storing elements for non volatilely storing charge; a control gate located over the substrate, the control gate having a first sidewall with a lower portion, the lower portion is at a first angle with respect to the substrate, the first angle being at least 10 degrees away from 90 degrees with respect to the substrate; a select gate located over the substrate, the select gate having a second sidewall with a lower portion, the second sidewall facing the first sidewall, the lower portion of the second sidewall is at a second angle with respect to the substrate that is at least 10 degrees away from 90 degrees with respect to the substrate; a layer of dielectric material located between the first sidewall and the second sidewall; wherein one of the control gate or the select gate includes a portion located over the other of the control gate or the select gate.