Patent ID: 8525216

Claim:
A circuit structure comprising: a carrier substrate comprising: a first and a second through-via, wherein each of the first and the second through-vias extends from a first surface of the carrier substrate to a second surface of the carrier substrate opposite the first surface; a first and a second contact pad on the first surface of the carrier substrate; and a third and a fourth contact pad on the second surface of the carrier substrate, wherein the third contact pad is electrically connected to the first contact pad through the first through-via, and the fourth contact pad is electrically connected to the second contact pad through the second through-via; a light-emitting diode (LED) chip bonded onto the first surface of the carrier substrate, wherein the LED chip comprises a first electrode and a second electrode connected to the first contact pad and the second contact pad, respectively; and electrical connections on the second surface of the carrier substrate and connecting the first and second through-vias to a power source, wherein the first and second through-vias are connected to the power source through an additional LED chip bonded onto the first surface of the carrier substrate.