摘要:
According to one embodiment, a design method of layout formed by a sidewall method is provided. The method includes: preparing a base pattern on which a plurality of first patterns extending in a first direction and arranged at a first space in a second direction intersecting the first direction and a plurality of second patterns extending in the first direction and arranged at a center between the first patterns, respectively, are provided; and drawing a connecting portion which extends in the second direction and connects two neighboring first patterns sandwiching one of the second patterns, and separating the one of the second patterns into two patterns not contacting the connecting portion.
摘要:
According to a mask verifying method of the embodiment, a difference between an actual dimension of a mask pattern and a simulation dimension is calculated as a computational estimated value. Moreover, a difference between an actual dimension of the mask pattern that is actually measured and a dimension on pattern data is calculated as an actually-measured difference. Then, it is verified whether a mask pattern dimension passes or fails based on the calculated value. When calculating the computational estimated value, a model function, which is set based on each correspondence relationship between an actual dimension and a mask simulation dimension of a test pattern, which includes a plurality of types of pattern ambient environments, to the mask pattern.
摘要:
A parameter adjustment method for a plurality of manufacturing devices to form a pattern of a semiconductor device on a substrate using the manufacturing devices includes: adjusting a parameter adjustable for a manufacturing device serving as a reference manufacturing device; obtaining a first shape of a pattern of a semiconductor device to be formed on a substrate; defining an adjustable parameter of another to-be-adjusted manufacturing; obtaining a second shape of the pattern formed on the substrate; calculating a difference amount between a reference finished shape and a to-be-adjusted finished shape; repeatedly calculating the difference amount by changing the to-be-adjusted parameter until the difference amount becomes equal to or less than a predetermined reference value; and outputting as a parameter of the to-be-adjusted manufacturing device the to-be-adjusted parameter.
摘要:
A semiconductor integrated circuit pattern verification method includes executing simulation to obtain a simulation pattern to be formed on a substrate on the basis of a semiconductor integrated circuit design pattern, comparing the simulation pattern and the design pattern that is required on the substrate to detect a first difference value, extracting error candidates at which the first difference value is not less than a first predetermined value, comparing pattern shapes at the error candidates to detect a second difference value, combining, into one group, patterns whose second difference values are not more than a second predetermined value, and extracting a predetermined number of patterns from each group and verifying error candidates of the extracted patterns.
摘要:
A pattern correcting method for correcting a design pattern to form a desired pattern on a wafer is disclosed, which comprises defining an allowable dimensional change quantity of each of design patterns, defining a pattern correction condition for the each design pattern based on the allowable dimensional change quantity defined for the each design pattern, and correcting the each design pattern based on the pattern correction condition defined for the each design pattern.
摘要:
A pattern verification method comprising preparing a desired pattern and a mask pattern forming the desired pattern on a substrate, defining at least one evaluation point on an edge of the desired pattern, defining at least one process parameter to compute the transferred/formed pattern, defining a reference value and a variable range for each of the process parameters, computing a positional displacement for each first points corresponding to the evaluation point, first points computed using correction mask pattern and a plurality of combinations of parameter values obtained by varying the process parameters within the variable range or within the respective variable ranges, the positional displacement being displacement between first point and the evaluation point, computing a statistics of the positional displacements for each of the evaluation points, and outputting information modifying the mask pattern according to the statistics.
摘要:
A design pattern data preparing method including preparing first mask pattern data based on first design pattern data, predicting a wafer pattern to be formed on a wafer corresponding to the first mask pattern based on the first mask pattern data, judging whether or not a finite difference between the predicted wafer pattern and the pattern to be formed on the wafer is within a predetermined allowable variation amount, correcting a portion of the first design pattern data selectively, the portion including a part corresponding to the finite difference when the finite difference is not within the allowable variation amount, and preparing second design pattern data by synthesizing the first mask pattern data corresponding to the portion including the part selectively corrected and data obtained by eliminating the first mask pattern data corresponding to the portion including the part selectively corrected from the first mask pattern data.
摘要:
A parameter adjustment method for a plurality of manufacturing devices to form a pattern of a semiconductor device on a substrate using the manufacturing devices includes: adjusting a parameter adjustable for a manufacturing device serving as a reference manufacturing device so as to fall within a range of a predetermined permissible variation and defining the adjusted parameter as a reference parameter of the reference manufacturing device; obtaining a first shape of a pattern of a semiconductor device to be formed on a substrate using the reference manufacturing device from a mask to form the pattern on the substrate when the reference parameter is set to the reference manufacturing device and defining the obtained first shape as a reference finished shape; defining an adjustable parameter of another to-be-adjusted manufacturing device as a to-be-adjusted parameter of the to-be-adjusted manufacturing device; obtaining a second shape of the pattern formed on the substrate using the to-be-adjusted manufacturing device from the mask when the defined to-be-adjusted parameter is set to the to-be-adjusted manufacturing device and defining the obtained second shape as a to-be-adjusted finished shape; calculating a difference amount between the reference finished shape and the to-be-adjusted finished shape; repeatedly calculating the difference amount by changing the to-be-adjusted parameter until the difference amount becomes equal to or less than a predetermined reference value; outputting as a parameter of the to-be-adjusted manufacturing device the to-be-adjusted parameter having the difference amount equal to or less than the predetermined reference value or the to-be-adjusted parameter having the difference amount which becomes equal to or less than the predetermined reference value through the repeated calculation.
摘要:
A pattern data correction method is disclosed, which comprises preparing an integrated circuit pattern, setting a tolerance to the pattern that is allowable error range when the pattern is transferred on a substrate, creating a target pattern within the tolerance, and making correction for the target pattern to make a first correction pattern under a predetermined condition.
摘要:
Disclosed is an exposure mask inspecting method for use in manufacturing semiconductor devices. This inspecting method calculate gradients of a correlation curve of a variation in critical dimension of an exposure mask and a variation in critical dimension of a resist, extracts portions having large slopes of the correlation curve, and slopes the portions having large slopes of the correlation curve as to-be-measured portions at the time of verifying the specifications of the surface critical dimension of the exposure mask.