Methods of making jogged layout routings double patterning compliant
AssigneeGlobalfoundries Inc.
InventorsLei Yuan, Jongwook Kye
Life of this patent
Estimating the term…
Abstract
One illustrative method disclosed herein involves creating an overall target pattern that includes an odd-jogged feature with a crossover region that connects first and second line portions, wherein the crossover region has a first dimension in a first direction that is greater than a second dimension that is transverse to the first direction, decomposing the overall target pattern into a first sub-target pattern and a second sub-target pattern, wherein each of the sub-target patterns comprise a line portion and a first portion of the crossover region, and generating first and second sets of mask data corresponding to the first and second sub-target patterns, respectively.
Claims12
A method, comprising:
- creating an overall target pattern comprised of a plurality of line-type features including an odd-jogged feature, wherein the each of the plurality of features are positioned above separate routing tracks, each of which are separated from an adjacent routing track by a pitch, said odd-jogged feature having a crossover region that connects first and second line portions, wherein said crossover region spans a distance corresponding to an odd number of pitches, said crossover region having a first dimension in a first direction that is parallel to a long-axis of one of said first and second line portions that is greater than a second dimension of each of said first and second line portions in a second direction that is transverse to said first direction;
- decomposing said overall target pattern into a first sub-target pattern and a second sub-target pattern, wherein said first sub-target pattern comprises one of said first and second line portions and a first portion of said crossover region and said second sub-target pattern comprises the other of said first and second line portions and a second portion of said crossover region;
- generating a first set of mask data corresponding to said first sub-target pattern;
- and
- generating a second set of mask data corresponding to said second sub-target pattern.
A method, comprising:
- creating an overall target pattern comprised of a plurality of features including an odd-jogged feature, wherein the each of the plurality of features are positioned above separate routing tracks, each of which are separated from an adjacent routing track by a pitch, said odd-jogged feature having a crossover region that connects first and second line portions, wherein said crossover region spans a distance corresponding to an odd number of pitches, said crossover region having a first dimension in a first direction that is parallel to a long-axis of one of said first and second line portions;
- decomposing said overall target pattern into a first sub-target pattern and a second sub-target pattern, wherein said first sub-target pattern comprises one of said first and second line portions and a first portion of said crossover region and said second sub-target pattern comprises the other of said first and second line portions and a second portion of said crossover region;
- determining a value for said first dimension at a point where a minimum spacing between features in said first sub-target pattern is equal to or larger than 32 nm;
- generating a first set of mask data corresponding to said first sub-target pattern;
- and
- generating a second set of mask data corresponding to said second sub-target pattern.
A method, comprising:
- creating an overall target pattern comprised of a plurality of features including an odd-jogged feature, wherein the each of the plurality of features are positioned above separate routing tracks, each of which are separated from an adjacent routing track by a pitch, said odd-jogged feature having a crossover region that connects first and second line portions, wherein said crossover region spans a distance corresponding to an odd number of pitches, said crossover region having a first dimension in a first direction that is parallel to a long-axis of one of said first and second line portions;
- decomposing said overall target pattern into a first sub-target pattern and a second sub-target pattern, wherein said first sub-target pattern comprises one of said first and second line portions and a first portion of said crossover region and said second sub-target pattern comprises the other of said first and second line portions and a second portion of said crossover region;
- determining a value for an overlay distance between said jogged portions of said first and second sub-patterns at a point where a minimum spacing between features in said first sub-target pattern is equal to or larger than 32 nm;
- generating a first set of mask data corresponding to said first sub-target pattern;
- and
- generating a second set of mask data corresponding to said second sub-target pattern.
A method of transferring an overall target pattern comprised of an odd-jogged feature to a layer of material using a double patterning process, said odd-jogged feature having a crossover region that connects first and second line portions, wherein said crossover region spans a distance corresponding to an odd number of pitches between the first and second line portions, said crossover region having a first dimension in a first direction that is parallel to a long-axis of one of said first and second line portions that is greater than a second dimension of each of said first and second line portions in a second direction that is transverse to said first direction, said overall target pattern comprising a first sub-target pattern and a second sub-target pattern, the method comprising;
- performing a first etching process through a first mask layer having said first sub-target pattern defined therein to transfer the first sub-target pattern to said layer of material, wherein said first sub-target pattern comprises one of said first and second line portions that are separated by said odd number of pitches and a first portion of said crossover region of the odd-jogged feature;
- and
- performing a second etching process through a second mask layer having said second sub-target pattern defined therein to transfer the second sub-target pattern to the layer of material, wherein said second sub-target pattern comprises the other of said first and second line portions that are separated by said odd number of pitches and a second portion of said crossover region of the odd-jogged feature.
Dependencies are inferred from the claim text.