Patent ID: 11930586
Assignee: KYOCERA CORPORATION
Field: Semiconductors (Electrical engineering)
Classification: CPC H | IPC H

Claim 0:
1. A wiring substrate comprising:
an insulating substrate including a base portion comprising a through hole having a first opening and a second opening, and a frame portion located on the base portion; and
a heat dissipator disposed on a side of the base portion that is opposite to the frame portion so as to block the second opening,
wherein an inner surface of the through hole faces a side surface of the heat dissipator with a clearance being provided between the inner surface of the through hole and the side surface of the heat dissipator, and
in a cross section of the wiring substrate a first end and a second end of an upper surface of the heat dissipator are each attached to the base portion using a connection conductor, and the upper surface extends continuously along one straight line from the first end to the second end of the upper surface.