Patent ID: 7271026

Claim:
A method for producing a chin stack, comprising: manufacturing at least a first and a second integrated circuit structure on a substrate, an area of the first integrated circuit structure and an area of the second integrated circuit structure adjoining a respective first and second kerf area of the substrate; forming a first redistribution layer on the first integrated circuit structure on the substrate, the first redistribution layer at least partially extending beyond the area of the first integrated circuit structure into the first kerf area, thereby forming a first integrated device area, wherein a first contact pad is formed by the first redistribution layer in a first contacting area overlapping the first kerf area; forming a second redistribution layer on the second integrated rated circuit structure on the substrate, thereby forming a second integrated device area, the second redistribution layer forming a second contacting area having a second contact pad disposed therein, wherein the second redistribution layer is formed to extend beyond the area of the second integrated circuit structure into the second kerf area, thereby forming the second integrated device area, and wherein the second contact pad thereby overlaps the second kerf area; separating the first and second integrated circuit structures along a boundary defined by the first and second kerf areas; and stacking the separated second integrated device on the separated first integrated device so that the first contact pad remains exposed and uncovered by the second integrated device, wherein the step of stacking is performed by positioning the integrated circuit structures in like relative x-y orientation and in such a way that the areas of the first and the second integrated circuit structures substantially cover each other entirely, wherein forming the first and second redistribution layer is performed by arranging their respective contacting patterns orthogonally with respect to each other.