Patent ID: 11929301
Assignee: NGK ELECTRONICS DEVICES, INC.
Field: Semiconductors (Electrical engineering)
Classification: CPC H | IPC H

Claim 5:
6. An electronic device comprising a package having a cavity to be sealed by a lid, the package comprising:
a heat sink having a coefficient of thermal expansion of 9 ppm/° C. or more and 15 ppm/° C. or less from 25° C. to 100° C.; and
a frame disposed on the heat sink, made of ceramics, and surrounding the cavity in plan view, wherein
an outer edge of the frame includes a first linear portion extending along a first direction, a second linear portion extending along a second direction orthogonal to the first direction, and a chamfer connecting the first linear portion and the second linear portion in plan view,
the electronic device further comprising:
an electronic component disposed within the cavity of the package; and
the lid sealing the cavity of the package, wherein
an edge of the lid includes a third linear portion extending along the first direction and a fourth linear portion extending along the second direction in plan view, and
a ratio of a distance c to a distance a is 10% or more and 50% or less,
where the distance a is a shortest distance between an imaginary intersection of the first linear portion and the second linear portion and an inner edge of the frame in plan view, and the distance c is a shortest distance between an imaginary intersection of the third linear portion and the fourth linear portion and the edge of the lid in plan view.