Patent ID: 9269654
Filing Date: 2016-02-23
CPC Classification: H01F,H01L,Y10T

Claim Text:
1. A semiconductor package comprising: a first semiconductor chip comprising a first coil disposed over a first semiconductor substrate; an isolating film disposed on the first semiconductor chip; a second semiconductor chip comprising a second coil and a second semiconductor substrate, wherein the second semiconductor substrate is disposed over the second coil, wherein the second semiconductor chip is attached to the first semiconductor chip with the isolating film, wherein the first coil of the first semiconductor chip is inductively coupled through the isolating film with the second coil of the second semiconductor chip to form a coreless transformer; a through hole disposed in the second semiconductor substrate, wherein the through hole extends through the entire second semiconductor substrate so as to expose a contact pad, wherein the contact pad is disposed over the contact pad, wherein the contact pad and the second coil are disposed between the second semiconductor substrate and the isolating film; and an encapsulating material disposed within the through hole in the second semiconductor substrate.