The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 25, 2023
Filed:
Sep. 14, 2020
Kioxia Corporation, Tokyo, JP;
Yoshio Mizuta, Yokkaichi, JP;
Kioxia Corporation, Tokyo, JP;
Abstract
An apparatus includes a first and second stages. The first and second stages respectively hold a first and second substrates. The second stage being opposed to the first stage. A stress application portion applies a stress to the first substrate based on a first magnification value. A calculator calculates the first magnification value based on a flatness of the first substrate and a first equation. The first equation represents a relation between flatness of a third substrate, a second magnification value, and an amount of pattern misalignment between the third substrate and a fourth substrate bonded to the third substrate. A controller controls the stress application portion to apply a stress to the first substrate on the first stage based on the first magnification value while the first and second substrates are bonded to each other.