Non-volatile memory device with a select gate electrode and a control gate electrode formed on a floating gate
First Claim
Patent Images
1. A non-volatile memory device comprising:
- a floating gate formed on a substrate with a gate insulation layer interposed therebetween;
a tunnel insulation layer formed on the floating gate;
a select gate electrode inducing charge through the gate insulation layer;
a control gate electrode inducing charge tunneling through the tunnel insulation layer and wherein at least a portion of the select gate electrode and at least a portion of the control gate electrode are formed directly on the gate insulation layer, wherein the select gate electrode comprising;
a top select gate electrode formed over the floating gate;
and a sidewall select gate electrode formed on a sidewall of the floating gate and the gate insulation layer opposite to the control gate electrode; and
a spacer insulation pattern interposed between the top select gate electrode and the sidewall select gate electrode and between the top select gate electrode and the control gate electrode.
1 Assignment
0 Petitions
Accused Products
Abstract
A non-volatile memory device includes a floating gate formed on a substrate with a gate insulation layer interposed therebetween, a tunnel insulation layer formed on the floating gate, a select gate electrode inducing charge introduction through the gate insulation layer, and a control gate electrode inducing charge tunneling occurring through the tunnel insulation layer. The select gate electrode is insulated from the control gate electrode. According to the non-volatile memory device, a select gate electrode and a control gate electrode are formed on a floating gate, and thus a voltage is applied to the respective gate electrodes to write and erase data.
17 Citations
13 Claims
-
1. A non-volatile memory device comprising:
-
a floating gate formed on a substrate with a gate insulation layer interposed therebetween; a tunnel insulation layer formed on the floating gate; a select gate electrode inducing charge through the gate insulation layer; a control gate electrode inducing charge tunneling through the tunnel insulation layer and wherein at least a portion of the select gate electrode and at least a portion of the control gate electrode are formed directly on the gate insulation layer, wherein the select gate electrode comprising;
a top select gate electrode formed over the floating gate;and a sidewall select gate electrode formed on a sidewall of the floating gate and the gate insulation layer opposite to the control gate electrode; and a spacer insulation pattern interposed between the top select gate electrode and the sidewall select gate electrode and between the top select gate electrode and the control gate electrode. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
-
Specification