Patent ID: 11923652
Assignee: SHINKO ELECTRIC INDUSTRIES CO., LTD.
Field: Optics (Instruments)
Classification: CPC H | IPC H

Claim 10:
11. A semiconductor package comprising:
a header for the semiconductor package comprising:
an eyelet having an upper surface, and a lower surface on an opposite side from the upper surface;
a first metal block having a first side surface, and configured to protrude from the upper surface of the eyelet;
a first lead sealed in a first through hole which penetrates the eyelet from the upper surface to the lower surface of the eyelet; and
a first substrate having a front surface formed with a first signal pattern electrically connected to the first lead, and a back surface on an opposite side from the front surface thereof, wherein
the back surface of the first substrate is fixed to the first side surface of the first metal block,
a first portion of the back surface of the first substrate is exposed from the first metal block, and
the first portion of the first substrate is formed with a ground pattern;

a Peltier device arranged on the upper surface of the eyelet;
a third metal block having a third side surface facing the same side as the first side surface, and arranged on the Peltier device; and
a third substrate having a front surface mounted with a light emitting device, and a back surface on an opposite side from the front surface thereof, wherein
the back surface of the third substrate is fixed to the third side surface of the third metal block,
a third portion of the back surface of the third substrate is exposed from the third metal block,
the third portion of the third substrate is formed with a ground pattern,
the first metal block and the third metal block are arranged at positions separated from each other, and
the ground pattern formed on the first portion of the first metal block, and the ground pattern formed on the third portion of the third metal block are electrically connected via a wiring member.