METHODS OF FORMING SEMICONDUCTOR DEVICES INCLUDING DETERMINING MISREGISTRATION BETWEEN SEMICONDUCTOR LEVELS AND RELATED APPARATUSES
Patent №
US 9,754,895
Granted
2017-09-05
Filed 2016
Owner
MICRON TECHNOLOGY, INC.
Lab
—
AI components
1
vision
Assignment
Recorded
Dataset
AIPD
2023_r1 edition
Application
15062452
A method of determining a lateral misregistration between levels of a semiconductor structure comprises imaging at least one first alignment mark in a first level of the structure and at least one second alignment mark in a second level of the structure. A digital image of the first and second alignment marks is formed, each of which are defined by a set of points having an x-value and a y-value. The x-values and y-values of points defining the first alignment mark and points defining the second alignment mark are averaged to determine a center of the first alignment mark and a center of the second alignment mark. An x-coordinate and a y-coordinate of the center of the first alignment mark is subtracted from the respective x-coordinate and y-coordinate of the center of the second alignment mark to determine a lateral misregistration between the first level and the second level. Related methods of forming a semiconductor wafer, semiconductor assembles and metrology tools for use in implementing the methods are disclosed.
AI classification
Ownership
MICRON TECHNOLOGY, INC.
assignment · 379090332
Assignors
CHAO, YANG, HESS, JOSEPH L., YPMA, KEITH E., BOSSART, KURT J.
On an employer assignment, the assignors are typically the inventors.