Mask Pattern Designing Method Using Optical Proximity Correction in Optical Lithography, Designing Device, and Semiconductor Device Manufacturing Method Using the Same
First Claim
1. A method for designing a mask pattern, comprising the steps of acquiring cell libraries having undergone a treatment of optical proximity correction directed to correcting a change of shape taking place during formation of a pattern by exposure of a mask pattern to light, laying out the cell libraries to design a mask pattern and changing an amount of the optical proximity correction given to cells in consideration of an influence of surrounding cell patterns.
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Abstract
A method for designing a mask pattern realizes shortening the ever-growing time for the OPC treatment, decreases the fabrication TAT of a semiconductor device and cuts cost. A method for fabricating a semiconductor device uses the mask pattern designed. This invention performs the OPC treatment in advance on a cell library constituting the basic configuration of a semiconductor circuit pattern and prepares a semiconductor chip using the cell library that has undergone the OPC treatment. The method for designing a mask pattern includes the steps of designing a cell library pattern by executing for each of the cell libraries a treatment for correcting proximity effect directed to correcting the change of shape taking place during the formation of a pattern by the exposure of a mask pattern, designing a mask pattern by laying out the cell libraries and changing the amount of correction of proximity effect applied to the cell libraries in consideration of the influence of the cell library patterns disposed peripherally. This treatment for correction is executed by the degree of influence exerted by surrounding patterns collected in advance and the genetic algorithm.
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15 Claims
- 1. A method for designing a mask pattern, comprising the steps of acquiring cell libraries having undergone a treatment of optical proximity correction directed to correcting a change of shape taking place during formation of a pattern by exposure of a mask pattern to light, laying out the cell libraries to design a mask pattern and changing an amount of the optical proximity correction given to cells in consideration of an influence of surrounding cell patterns.
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