Synopsys, Inc.

Martin Drapeau

Lawrence S Melvin, Iii

Jensheng Huang

Jeffrey P Mayhew

One embodiment provides a method for determining mask layouts. During operation, the system can receive a design intent. Next, the system can determine a set of critical edges in the design layout, and select a first edge and a second edge. The system can then determine a first trench and a second trench using the first edge and the second edge, respectively. Note that an edge of the first trench may substantially overlap with the first edge, and an edge of the second trench may substantially overlap with the second edge. Next, the system may assign the first trench and the second trench to the first mask layout and the second mask layout, respectively. The system can then increase the first trench and the second trench, thereby improving pattern fidelity. The resulting mask layouts may be used in a double patterning process.

Method and apparatus for determining mask layouts for a multiple patterning process

One embodiment of the present invention provides a system that determines whether a sub-resolution assist feature will print. During operation, the system receives a layout which contains a sub-resolution assist feature. Next, the system determines whether the sub-resolution assist feature will print using a process model and the layout. The process model is determined using first process data and second process data. The first process data is obtained using a first layout which is exposed using a first exposure level. The second process data is obtained using a second layout which is exposed using a second exposure level, which is different from the first exposure level. The second exposure level causes the sub-resolution assist features within the second layout to print.

Method and apparatus for determining whether a sub-resolution assist feature will print

One embodiment of the invention provides a graphical user interface for configuring parameters that control a cell routing process used to lay out a cell, wherein the graphical user interface is useable by both novice and advanced users. The graphical user interface provides both a scenario section and a parameter section. The scenario section allows a user to select a scenario that sets values for multiple parameters applicable to the cell routing process, while the parameter section allows a user to set and adjust individual routing parameters. The graphical user interface also includes an output that displays the parameters to the user. Note that the scenario section of the graphical user interface is useful for a novice user who does not understand the interrelationships between routing parameters, while the parameter section of the graphical user interface is useful for an advanced user who desires to set individual parameters.

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Montreal, Canada

Martin Drapeau