Patent ID: 9580306
Date: 2017-02-28
CPC Classifications: B23K,B81C,H01L

Claim:
1. A room temperature bonding method comprising: irradiating a first surface of a first substrate with a first activation beam; irradiating a second surface of a second substrate with a second activation beam; and bonding the first substrate and the second substrate after first irradiation as irradiation of the first activation beam and second irradiation as irradiation of the second activation beam are performed, wherein a first irradiation period of the first irradiation is longer than a second irradiation period of the second irradiation, wherein the first activation beam includes one activation beam emitted from a first beam source and one activation beam emitted from a second beam source, and the first beam source and the second beam source have two-fold rotational symmetry with respect to an axis.