Patent ID: 11892464
Assignee: SEIKO EPSON CORPORATION
Field: Measurement (Instruments)
Classification: CPC G  B | IPC B  G

Claim 0:
1. An electronic device comprising:
a substrate;
a functional element disposed on one surface of the substrate;
a lid body, the functional element being housed in a space covered by the lid body and the substrate, the lid body including:
a first surface facing the functional element;
a second surface at an opposite side of the first surface;
a first hole section including an inclined surface and a bottom surface on the second surface;
a second hole section piercing through the lid body between the first surface and the bottom surface of the first hole section and having an inner wall surface; and
a first joining section of the inclined surface and the bottom surface in the first hole section being a first curved surface along a vertical direction in a cross section of the inclined surface and the bottom surface of the first hole section, the lid body containing silicon; and

a sealing member that seals the first hole section communicating with the space,
wherein a curvature radius of the first curved surface is in a range of 5 nm and 50 μm.