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

Claim 3:
4. 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;
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,
a second metal block having a second side surface facing the same side as the first side surface, and protruding from the upper surface of the eyelet;
a second lead sealed in a second through hole which penetrates the eyelet from the upper surface to the lower surface of the eyelet; and
a second substrate having a front surface formed with a second signal pattern electrically connected to the second 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,
the first portion of the first substrate is formed with a ground pattern,
the back surface of the second substrate is fixed to the second side surface of the second metal block,
the first metal block and the second metal block are arranged at positions separated from each other,
a second portion of the back surface of the second substrate is exposed from the second metal block, and
the second portion of the second substrate is formed with a ground pattern.