×

Method for determining air-bridge post placement

  • US 5,121,336 A
  • Filed: 10/26/1988
  • Issued: 06/09/1992
  • Est. Priority Date: 10/26/1988
  • Status: Expired due to Fees
First Claim
Patent Images

1. A computer implemented method for determining placement of a plurality of air-bridge posts for a large scale semiconductor device comprising the steps performed by said computer:

  • locating empty post positions in a plurality of cell rows;

    aligning empty post positions on top and bottom cell rows for every maximum distance by inserting and/or removing feedthrough cells and reassigning pin positions for feedthrough lines;

    determining connections for a plurality of cells in said cell rows by performing an interconnect routing using a plurality of wires thereby creating a pattern containing a plurality of interconnects;

    locating and scanning positions of said wire end positions to detect wire lengths which exceed a predetermined distance for determining the placement positions of said air-bridge posts to provide support for an air-bridge spanning the distance between two wire end positions; and

    compacting said cell rows and said interconnects.

View all claims
  • 1 Assignment
Timeline View
Assignment View
    ×
    ×