Patent ID: 7727859

Claim:
A method for manufacturing a semiconductor device, comprising the steps of: forming a transistor over one surface of a first substrate; forming a first insulating layer over the transistor; forming a first conductive layer electrically connected to a source or a drain of the transistor through an opening provided in the first insulating layer; forming a second insulating layer over the first conductive layer; forming a second conductive layer electrically connected to the first conductive layer through an opening provided in the second insulating layer, the second conductive layer functioning as an antenna; providing a second substrate over the second insulating layer so that a surface of the second insulating layer is in contact with one surface of the second substrate; grinding the other surface of the first substrate and the other surface of the second substrate until a thickness of each of the first substrate and the second substrate becomes 100 μm or less; polishing the other surface of the first substrate and the other surface of the second substrate until the thickness of each of the first substrate and the second substrate becomes 2 μm or more and 50 μm or less; and forming a stacked body including the first substrate, the transistor, and the second substrate by cutting the first substrate, the first insulating layer, the second insulating layer, and the second substrate.