Patent ID: 7592707
Filing Date: 2009-09-22
Classification: G02B,H01L

Abstract:
1. An apparatus that facilitates precise inter-chip alignment for proximity communication and power delivery, comprising: a first integrated circuit chip, whose surface has etch pit wells, where an etch pit well is an indented region in the surface of an integrated circuit chip; a second integrated circuit chip, whose surface has corresponding etch pit wells configured to align with the etch pit wells of the first integrated circuit chip; and a shaped structure which is placed in an etch pit well of the first integrated circuit chip such that when a corresponding etch pit well of the second integrated circuit chip is substantially aligned with the etch pit well of the first integrated circuit chip, the shaped structure mates with both the etch pit well of the first integrated circuit chip and the corresponding etch pit well of the second integrated circuit chip, thereby precisely aligning proximity communication structures in the first integrated circuit chip with corresponding proximity communication structures in the second integrated circuit chip; wherein the shaped structure creates a conductive connection between the first integrated circuit chip and the second integrated circuit chip and wherein multiple distinct conductive elements with different locations in the etch pit well are used to create the conductive connection.