Patent ID: 7470565
Filing Date: 2008-12-30
Classification: B81C,H01L

Abstract:
1. A method of wafer level packaging and cutting, comprising: providing a packaging wafer, the packaging wafer comprising a plurality of cavities on a front surface thereof; performing a pre-cutting process upon the front surface and forming a plurality of trenches between the cavities and a plurality of partitions between the trenches and the cavities, wherein the packaging wafer has a thickness greater than a depth of the trenches; providing an element wafer, the element wafer having a plurality of devices and a plurality of bonding pads on a surface of the element wafer; bonding the packaging wafer and the element wafer; and performing a cutting process along the trenches upon the packaging wafer, thereafter using a piece of tape to remove an unbound part of the packaging wafer to expose the bonding pads of the element wafer, and accordingly forming a wafer level package.