Patent 7087538 was granted and assigned to Intel on August, 2006 by the United States Patent and Trademark Office.
A three-dimensional integrated circuit formed by applying a material to fill a gap between coupled wafers and slicing the coupled wafers into dice. A method for filling a gap between coupled wafers. Various embodiments include at least one of spinning a coupled wafer pair, drilling a hole into one of the coupled wafers, and using a vacuum to aid in the dispersion of the material.