Patent ID: 8278202
Filing Date: 2012-10-02
Classification: H01L

Abstract:
1. A method for manufacturing on a substrate a semiconductor device with a floating-gate and a control-gate, the method comprising: first forming isolation zones in a surface of the substrate, thereafter depositing a floating gate layer over the substrate and the isolation zones, etching the floating gate layer to form the floating gate on the substrate between two of the isolation zones, thereafter extending the floating gate by forming conductive spacers on sidewalls of the floating gate layer, forming an interpoly dielectric layer on the floating gate layer and on the conductive spacers, thereafter forming the control gate over the floating gate and the conductive spacers, and wherein the step of extending the floating gate by forming conductive spacers on sidewalls of the floating gate layer includes forming conductive spacers that are configured and arranged to mitigate fence leakage of the floating gate.