Granted Patent B2

US 7,844,934 · App. 11/486,107 · Granted Nov 30, 2010

Abstract

Claims (25)

1. A method for designing a semiconductor integrated circuit layout, comprising the steps of:

arranging basic logic cells which are circuit patterns corresponding to logic components of a semiconductor integrated circuit;

automatically arranging, by a computer device, wiring between said basic logic cells;

searching for a blank area in which none of said basic logic cells is arranged;

forming a rectangular region in said blank area;

arranging fill cells in said rectangular region and grouping said fill cells into pseudo-hierarchical cells to form a hierarchy;

arranging fill cells in the remaining blank areas after each rectangular region is formed; and

performing optical proximity effect correction on the semiconductor integrated circuit pattern,

wherein the size of an X-direction of said rectangular region is more than twice the size of a corresponding X-direction of a smallest fill cell among said fill cells, and the size of a Y-direction of said rectangular region is more than twice the size of a corresponding Y-direction of said smallest fill cell.

2. The method for designing a semiconductor integrated circuit layout according to claim 1 , wherein said fill cells are broken down into smaller fill cells, and said smaller fill cells are grouped into said pseudo-hierarchical cells to form said hierarchy.

3. The method for designing a semiconductor integrated circuit layout according to claim 1 , further comprising the steps of:

setting a repeater in a long wiring line;

setting a cell for said repeater as a blank area; and

reconfiguring said repeater using said fill cells.

4. The method of claim 1 , wherein the X-direction is perpendicular to the Y-direction.

5. The method of claim 1 , wherein said smallest fill cell is one-half of the size of a larger size fill cell among said fill cells.

6. The method of claim 1 , comprising: forming at least two rectangular regions in said blank area, the at least two rectangular regions being of different sizes with respect to each other.

7. The method of claim 1 , wherein the each rectangular region includes all rectangular regions extracted from said blank area.

8. A method for designing a semiconductor integrated circuit layout, comprising the steps of:

arranging basic logic cells which are circuit patterns corresponding to logic components of a semiconductor integrated circuit;

automatically arranging, by a computer device, wiring between said basic logic cells;

arranging a dummy pattern into said arranged wiring;

dividing said dummy pattern and said arranged wiring into smaller patterns and converting said smaller patterns into cells;

grouping said cells into pseudo-hierarchical cells to form a hierarchy; and

performing optical proximity effect correction based on the hierarchical relationship of said pseudo-hierarchical cells on the semiconductor integrated circuit pattern.

Assignments (11)