Patent ID: 7473617

Claim:
An integrated circuit chip manufacturing method comprising: a first bonding step of bonding a first support member to a first surface of a semiconductor substrate which has the first surface and a second surface and has a semiconductor region including an integrated circuit on a first surface side thereof; a thinning step of thinning the semiconductor substrate, in a state that the semiconductor substrate is supported by the first support member bonded to the semiconductor substrate, by removing a second surface-side portion of the semiconductor substrate bonded to the first support member such that the semiconductor region is left; a second bonding step of bonding a second support member to the second surface side of the thinned semiconductor substrate; and then a chip forming step of forming chips by cutting the semiconductor region in a state that the semiconductor region is supported by the second support member bonded to the thinned semiconductor substrates, wherein, in the chip forming step, the semiconductor region is cut together with at least one of the first and second support members to form chips.