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.

VisionH01L 23/544H10W 46/00G03F 7/70633G06T 7/001G06T 7/11G06T 7/73G06T 11/20H01L 21/681+25 more

AI classification

Vision1.00
Evolutionary computation0.00
Natural language0.00
Planning0.00
AI hardware0.00
Machine learning0.00
Knowledge representation0.00
Speech0.00

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.

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