| 摘要 |
A method and an apparatus for automatically making changes to one or more metal layers of an IC design after the IC design has been tape released. The apparatus includes an ECO tool configured to receive a directive or a list of directives and to automatically make modifications described by the directives to one or more metal layers of the design. The ECO tool of the present invention obviates the need to make changes manually to the post-tape release design using a layout editor. The ECO tool automatically ensures that no changes are made to non-metal layers of the IC design. Therefore, once the post-tape release changes have been made, masks only need to be generated for the modified metal layers. In addition, because the ECO tool does not make changes that are not described by directives, confidence is maintained in the previously verified unchanged portions of the design.
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