Patent ID: 7033914
Filing Date: 2006-04-25
Classification: B81C,H01L

Abstract:
1. A method of making a package structure comprising: (a) providing a first wafer having an active surface and a backside surface, the active surface having a plurality of scribe lines defining a plurality of chips, wherein each chip has an annular body thereon; (b) dicing the first wafer from the active surface to form a first reference axis and a second reference axis, wherein the first reference axis and the second reference axis have a predetermined distance from the chips respectively, and the first reference axis is perpendicular to the second reference axis so as to form a reference coordinate; (c) providing a second wafer having an upper surface and a lower surface; (d) covering and joining the second wafer to the first wafer, wherein the lower surface of the second wafer faces the active surface of the first wafer to form a plurality of cavities defined by the annular body; and (e) dicing the corresponding positions of the scribe lines of the first wafer from the backside surface thereof according to the predetermined distance from the reference coordinate so as to form an individual package structure.