Patent ID: 8748289
Filing Date: 2014-06-10
Classification: B24B,H01L

Abstract:
1. A method for manufacturing a semiconductor device comprising: bonding a supporting substrate to a surface of a device substrate having in the surface a deposited film on a silicon surface; grinding silicon on the back side of the device substrate to a predetermined thickness of the device substrate; pressing a first polishing tape against a peripheral portion of the device substrate having the deposited film on the silicon substrate while rotating the bonded substrates at a first rotational speed, thereby removing the deposited film lying in the peripheral portion of the device substrate and exposing the underlying silicon; and then pressing a second polishing tape against the exposed silicon lying in the peripheral portion of the supporting substrate while rotating the bonded substrates at a second rotational speed, thereby polishing silicon, lying in the peripheral portion of the supporting substrate, to a predetermined depth to form a chamfered portion.