Semiconductor device manufacturing: process – Bonding of plural semiconductor substrates
Reexamination Certificate
2006-04-18
2006-04-18
Geyer, Scott (Department: 2812)
Semiconductor device manufacturing: process
Bonding of plural semiconductor substrates
Reexamination Certificate
active
07029990
ABSTRACT:
The invention relates to a process of assembly of at least two silicon substrates. The method comprises:a step of placing in contact a first silicon substrate (9) with a second silicon substrate (10), the first and second substrates (9, 10) being substantially non-transparent for a wavelength λ of laser radiation (R), anda step of illuminating the first silicon substrate (9) with a laser beam of wavelength λ to create a fusion path (21), along the laser beam axis (A1-A2), in the thickness of the first substrate (9) and in all or part of the thickness of the second substrate (10).The invention is applied to the sealing of cavities and of mechanical or electrical joints situated at the interface of two silicon substrates.
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Commissariat a l''Energie Atomique
Geyer Scott
Thelen Reid & Priest LLP
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