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US 7,009,241 B2Granted
Metal-poly integrated capacitor structure
AssigneeMicron Technology, Inc.
InventorGiulio Giuseppe Marotta
Life of this patent
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Abstract
A metal-poly integrated capacitor structure that may be used in a charge pump circuit of a non-volatile memory. In one embodiment, the capacitor comprises a poly silicon layer, a first metal layer and a second metal layer. The first metal layer is positioned between the poly silicon layer and the second metal layer. The first metal layer has a first terminal and a second terminal. The first terminal is electrically isolated from the second terminal.
Claims8
A voltage divider comprising:
- a first capacitor having a second terminal selectively coupled to a voltage supply;
- a second capacitor having a first terminal coupled to a first terminal of the first capacitor, the second capacitor further having a second terminal coupled to ground;
- wherein the first and second capacitor include:
- a first metal layer forming the first and second terminals, the first and second terminals each having a base strip and a plurality of side strips that extend from the respective base strip, wherein the side strips of the first terminal are positioned in between the side strips of the second terminal so that the first and second side strips are alternately positioned between the first and second bases of the respective first and second terminals, further wherein the first terminal is electrically isolated from the second terminal;
- a second metal layer;
- and
- a poly silicon layer, the first metal layer is positioned between the poly silicon layer and the second metal layer and the first terminal of the first metal layer is electrically isolated from the poly silicon layer.
4 more elements
A voltage divider comprising:
- a first capacitor having a second terminal selectively coupled to receive a voltage supply;
- a second capacitor having a first terminal coupled to a first terminal of the first capacitor, the second capacitor further having a second terminal coupled to receive a ground;
- wherein the first and second capacitor include:
- a poly silicon layer;
- a second metal layer;
- and
- a first metal layer positioned between the poly silicon layer and the second metal layer, the first metal layer having the first and second terminals, wherein the first terminal is electrically isolated from the second terminal and the poly silicon layer.
4 more elements
A voltage divider comprising:
- a first capacitor having a second terminal selectively coupled to receive a voltage supply;
- a second capacitor having a first terminal coupled to a first terminal of the first capacitor, the second capacitor further having a second terminal coupled to receive a ground;
- wherein the first and second capacitor include:
- a poly silicon layer;
- the first metal terminal formed over the poly silicon layer and having a first base strip and a plurality of first side strips extending from the first base strip, the first metal terminal electrically isolated from the poly silicon layer;
- the second metal terminal formed over the poly silicon layer and having a second base strip and a plurality of second side strips extending from the second base strip, the second metal terminal electrically isolated from the first metal terminal and electrically coupled to the poly silicon layer;
- and
- a metal layer formed over the first and second metal terminals and electrically coupled to the second metal terminal.
5 more elements
Dependencies are inferred from the claim text.