Power metal oxide semiconductor field effect transistor layout
First Claim
1. A power metal oxide semiconductor field effect transistor (MOSFET) layout comprising:
- a substrate;
a plurality of cells, each of said cells including;
a base portion;
a plurality of protruding portions extending from the base portion, each of said cells being geometrically configured with the base portion and the plurality of protruding portions defining a closed cell boundary enclosing each of said cells; and
a plurality of photo-resist regions;
wherein the cells are formed over the substrate, and the closed cell boundaries of the cells are arranged regularly with each other with no overlapping among the cells;
wherein the base portions are disposed in a matrix arrangement having rows and columns, the base portions being oriented from end to end in a direction of the columns and the protruding portions extending from the base portions along a direction of the rows;
wherein the photo-resist regions cover the base portions on the same column; and
wherein none of the protruding portions are disposed between the base portions on the same column; and
wherein the cells are doped with N type dopants by using the photo-resist regions as masks.
2 Assignments
0 Petitions
Accused Products
Abstract
A power MOSFET layout according to one embodiment of the invention comprises a substrate and a plurality of cells. Each of the cells includes a base portion, a plurality of protruding portions extending from the base portion, and a plurality of photo-resist regions. Each of the cells is geometrically configured with the base portion and the plurality of protruding portions defining a closed cell boundary enclosing each of said cells. The cells are formed over the substrate, and the closed cell boundaries of the cells are arranged regularly with each other with no overlapping among the cells. The base portions are disposed in a matrix arrangement having rows and columns. The base portions are oriented from end to end in a direction of the columns and the protruding portions extend from the base portions along a direction of the rows. The photo-resist regions cover the base portions on the same column. None of the protruding portions are disposed between the base portions on the same column. The cells are doped with N type dopants by using the photo-resist regions as masks.
8 Citations
25 Claims
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1. A power metal oxide semiconductor field effect transistor (MOSFET) layout comprising:
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a substrate;
a plurality of cells, each of said cells including;
a base portion;
a plurality of protruding portions extending from the base portion, each of said cells being geometrically configured with the base portion and the plurality of protruding portions defining a closed cell boundary enclosing each of said cells; and
a plurality of photo-resist regions;
wherein the cells are formed over the substrate, and the closed cell boundaries of the cells are arranged regularly with each other with no overlapping among the cells;
wherein the base portions are disposed in a matrix arrangement having rows and columns, the base portions being oriented from end to end in a direction of the columns and the protruding portions extending from the base portions along a direction of the rows;
wherein the photo-resist regions cover the base portions on the same column; and
wherein none of the protruding portions are disposed between the base portions on the same column; and
wherein the cells are doped with N type dopants by using the photo-resist regions as masks. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22)
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23. A power metal oxide semiconductor field effect transistor (MOSFET) layout comprising:
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a substrate;
a plurality of cells, each of said cells including a base portion and a plurality of protruding portions extending from the base portion;
wherein each of said cells is geometrically configured with the base portion and the plurality of protruding portions defining a closed cell boundary enclosing each of said cells;
wherein the cells are formed over the substrate, and the closed cell boundaries of the cells being geometrically arranged so that one cell does not overlay another cell on the substrate;
wherein the base portions are disposed in a matrix arrangement having rows and columns, the base portions being oriented from end to end in a direction of the columns and the protruding portions extending from the base portions along a direction of the rows;
wherein the base portions on the same column are configured to be covered by a photo-resist region; and
wherein none of the protruding portions are disposed between the base portions on the same column; and
wherein the cells are processed by using the photo-resist regions as masks. - View Dependent Claims (24, 25)
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Specification