Patent ID: 9545002
Date: 2017-01-10
CPC Classifications: H05K

Claim:
1. A multilayer circuit board, comprising: a first substrate having a first side, a second side, a first pad, and a first circuit, wherein the first side and the second side are on opposite sides of the first substrate; the first pad is on the second side, and electrically connected to the first circuit, which is embedded in the first substrate; and a second substrate having a third side, a fourth side, a first through hole, a second pad, and a second circuit, wherein the third side and the fourth side are on opposite sides of the second substrate; the third side of the second substrate is laminated on the second side of the first substrate; the first through hole is opened at both the third side and the fourth side, and the first pad of the first substrate is in the first through hole; the second pad is on the fourth side, and electrically connected the second circuit, which is embedded in the second substrate.