Patent ID: 9161461
Filing Date: 2015-10-13
Classification: H01L,H05K,Y10T

Abstract:
1. A multilayer electronic structure comprising a plurality of layers extending in an X-Y plane, the multilayer electronic structure consisting of a dielectric material comprising a polymer surrounding metal via posts that conduct in a Z direction perpendicular to the X-Y plane, and further comprising at least one multilayered hole that crosses at least two layers of the plurality of layers and at least two layers of hole in adjacent layers of the multilayer electronic structure, wherein the at least two layers of hole in adjacent layers have different dimensions in the X-Y plane, and where at least one layer of hole is an aperture in a surface of the multilayer electronic structure and where a perimeter of a hole in an inner layer of the multilayered hole is aligned with the surrounding via posts to a precision of +−10 microns.