Patent ID: 11888462
Assignee: NGK INSULATORS, LTD.
Field: Basic communication processes (Electrical engineering)
Classification: CPC H | IPC H

Claim 0:
1. A bonded body comprising:
a supporting substrate;
a piezoelectric material substrate;
a first bonding layer provided on said supporting substrate and having a composition of Si(1-x)Ox (0.008≤x≤0.408);
a second bonding layer provided on said piezoelectric material substrate and having a composition of Si(1-y)Oy (0.008≤y≤0.408); and
an amorphous layer provided between said first bonding layer and said second bonding layer,
wherein an oxygen ratio of said amorphous layer is higher than an oxygen ratio of said first bonding layer and an oxygen ratio of said second bonding layer.