Patent ID: 7596863

Claim:
A method of making a printed circuit board, said method comprising: providing a first circuitized substrate including at least one dielectric layer having first and second opposing surfaces, and first and second opposing conductive layers positioned on said first and second surfaces of said at least one dielectric layer, respectively; providing second and third circuitized substrates each including at least one dielectric layer and at least one conductive layer; forming first and second openings within said second and third circuitized substrates, respectively; positioning first and second cover members within said first and second openings within said second and third circuitized substrates, respectively; aligning said first, second and third circuitized substrates relative to one another with said first opening of said second circuitized substrate having said first cover member therein facing said first opposing surface of said first circuitized substrate and said second opening of said third circuitized substrate having said second cover member therein facing said second opposing surface of said first circuitized substrate; bonding said first, second and third circuitized substrates together; and thereafter removing said first and second cover members to define first and second cavities within said second and third circuitized substrates, respectively, said first, second and third circuitized substrates forming a printed circuit board.