Patent ID: 7339452

Claim:
An embedded inductor suitable for applying in a wiring board, comprising: a first conductive trace in a first patterned conductive layer of the wiring board; a second conductive trace in a second patterned conductive layer of the wiring board; a third conductive trace in a third patterned conductive layer of the wiring board, wherein the third patterned conductive layer is disposed between the first patterned conductive layer and the second patterned conductive layer; a fourth conductive trace formed of a fourth patterned conductive layer of the wiring board, wherein the fourth patterned conductive layer is disposed between the second patterned conductive layer and the third patterned conductive layer; a fifth conductive trace formed of a fifth patterned conductive layer of the wiring board, wherein the fifth patterned conductive layer is disposed between the third patterned conductive layer and the fourth patterned conductive layer; a first conductive structure electrically connecting the first conductive trace and the second conductive trace; a second conductive structure electrically connecting the second conductive trace and the third conductive trace; a third conductive structure electrically connected to the third conductive trace and the fourth conductive trace; and a fourth conductive structure electrically connected to the fourth conductive trace and the fifth conductive trace, wherein the first conductive trace, the second conductive trace, the third conductive trace, the fourth conductive trace, the fifth conductive trace, the first conductive structure, the second conductive structure, the third conductive structure, and the fourth conductive structure are arranged spirally on a plane.