Patent ID: 8629061
Filing Date: 2014-01-14
Classification: H01L

Abstract:
1. A method of fabricating an interposer, the method comprising the steps of: providing a donor body having a first surface; implanting ions into the first surface of the donor body to define a cleave plane; separably contacting a first temporary carrier to the first surface of the donor body; cleaving a lamina from the donor body at the cleave plane, wherein the cleave plane forms a back surface of the lamina, wherein the first surface of the donor body is a front surface of the lamina, and wherein the lamina has a thickness from the front surface to the back surface; forming a via hole in the lamina, wherein the via hole extends through the thickness of the lamina; removing the first temporary carrier from the lamina; and bonding either the front surface or the back surface of the lamina to a second temporary carrier using a de-bondable adhesive; wherein the step of removing the first temporary carrier occurs after the step of bonding the lamina to the second temporary carrier; and wherein the step of forming a via hole in the lamina occurs after the step of removing the first temporary carrier.