Flash memory device using semiconductor fin and method thereof
First Claim
1. A flash memory device comprising:
- a semiconductor fin including a top surface and a side surface originated from different crystal planes;
a first insulating layer formed on the side surface and a second insulating layer formed on the top surface;
a storage electrode formed on the first insulating layer and the second insulating layer;
a gate insulating layer formed on the storage electrode; and
a control gate electrode formed on the gate insulating layer.
1 Assignment
0 Petitions
Accused Products
Abstract
A flash memory device according to the present invention includes a semiconductor fin including a top surface and a side surface originated from different crystal planes. The flash memory device comprises: insulating layers having different thicknesses formed on a side surface and a top surface of the semiconductor fin, a storage electrode, a gate insulating layer and a control gate electrode sequentially formed on the insulating layers. A thin insulating layer enables charges to be injected or emitted through it, and a thick insulating layer increases a coupling ratio. Accordingly, it is possible to increase an efficiency of a programming or an erase operation of a flash memory device.
270 Citations
34 Claims
-
1. A flash memory device comprising:
-
a semiconductor fin including a top surface and a side surface originated from different crystal planes;
a first insulating layer formed on the side surface and a second insulating layer formed on the top surface;
a storage electrode formed on the first insulating layer and the second insulating layer;
a gate insulating layer formed on the storage electrode; and
a control gate electrode formed on the gate insulating layer. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
-
-
12. A flash memory device comprising:
-
a semiconductor fin including a top surface and a side surface originated from different crystal planes;
a first thermal oxide layer and a second thermal oxide layer with different thicknesses formed on the side surface and the top surface;
a floating gate electrode formed on the first thermal oxide layer and the second thermal oxide layer;
a gate insulating layer formed on the floating gate electrode; and
a control gate electrode formed on the gate insulating layer. - View Dependent Claims (13, 14, 15, 16, 17, 18, 19)
-
-
20-29. -29. (canceled)
-
30. A semiconductor device comprising:
-
a first semiconductor fin including a top surface and a side surface of a different crystal plane;
a second semiconductor fin including a top surface of a crystal plane equal to the top surface of the first semiconductor fin and a side surface of a crystal plane which is the same as or a different side surface of the first semiconductor fin;
a first thermal oxide layer and a second thermal oxide layer formed on a top surface and a side surface of the first semiconductor fin, respectively;
a floating gate electrode formed on the first thermal oxide layer and the second thermal oxide layer;
a first gate insulating layer and a control gate electrode, which are sequentially formed on the floating gate electrode;
a second gate insulating layer formed on the top surface and the side surface of the second semiconductor fin; and
a gate electrode formed on the second gate insulting layer. - View Dependent Claims (31, 32, 33, 34)
-
Specification