Patent ID: 7052975
Filing Date: 2006-05-30
Classification: H01L

Abstract:
1. A method of fabricating a semiconductor chip from a semiconductor wafer having a first surface supporting a semiconductor element and a second surface opposite the first surface, the method comprising the steps of: forming a resist on one or both of the first surface and the second surface, the resist including an aperture for exposing a cutting portion of the semiconductor wafer; performing isotropic etching on the exposed cutting portion via the aperture of the resist, thereby forming a groove having a bowl-shaped cross-section, the groove including an aperture having a width greater than the width of the aperture of the resist; and performing anisotropic etching on a bottom surface of the groove via the aperture of the resist in such a way that a width of a resulting aperture on the bottom surface becomes smaller than the width of the aperture of the groove, thereby separating the semiconductor wafer into individual semiconductor elements.