Patent ID: 7642134
Filing Date: 2010-01-05
Classification: H01L

Abstract:
1. A manufacturing method of a semiconductor device in which a first substrate comprising a semiconductor element area is divided into a plurality of semiconductor devices, the manufacturing method comprising steps of: performing a first etching process to etch a separation area on a front surface of the first substrate; arranging a supporter on a back surface of the first substrate to prevent each of the plurality of semiconductor devices from coming apart after the first substrate is divided; coating a non-etching area, including a sidewall of the etched separation area and excluding an aperture area on a bottom of the etched separation area, on the front surface of the first substrate with a thin film; and performing a second etching process to etch the first substrate from the front surface through the aperture area as an etching window so as to penetrate the first substrate; wherein the first etching process is an anisotropic etching process and the second etching process is an isotropic etching process.