Patent ID: 8361876
Filing Date: 2013-01-29
Classification: G03F,H01L

Abstract:
1. A manufacturing method of a semiconductor device comprising the steps of: forming a first alignment mark and a second alignment mark by (i) forming one or more first grooves and one or more second grooves, respectively, on a first surface of a semiconductor substrate and (ii) filling the one or more first and second grooves with a material different from the semiconductor substrate; forming a first element on the first surface of the semiconductor substrate using the first alignment mark for alignment; bonding a support substrate to the first surface of the semiconductor substrate; reversing a bonded structure of the support substrate and the semiconductor substrate around a predetermined axis and thinning the semiconductor substrate from the side of a second surface of the semiconductor substrate at least until a thickness at which a position of the second alignment mark is detected by reflected light obtained by applying alignment light from the second surface side of the semiconductor substrate; and forming a second element on the second surface of the semiconductor substrate using the second alignment mark for alignment, wherein,