Patent ID: 8154128

Claim:
A device comprising: a three-dimensional structure including a plurality of levels, including levels 0 to N, where N is at least 2, in which level (i), for (i) equal to 0 through N−1, includes a landing area (i) having a length in a longitudinal direction and a width in a transverse direction, and in which level (i), for (i) equal to 1 through N, overlies level (i−1), and has an opening (i) which for (i) equal to 1 through N−1 is adjacent the landing area (i) on level (i), and extends over the landing area (i−1) on level (i−1) and for (i) greater than 1, over the opening (i−1) in level (i−1), the opening (i) having a distal longitudinal sidewall aligned with the distal longitudinal sidewall of opening (i−1) in level (i−1) and a proximal longitudinal sidewall defining a length of the opening (i) at least as large as the length of the landing area (i−1) plus the length of the opening (i−1), if any, and for (i) greater than 1, having transverse sidewalls aligned with the transverse sidewalls of opening (i−1) in level (i−1) and defining a width of the opening over landing area (i−1) at least as large as the width of landing area (i−1); and insulating fill in the openings in levels 1 to N, and conductors extending through the insulating fill in the openings to contact the landing areas on levels 0 to N−1.