Patent ID: 8957501
Filing Date: 2015-02-17
Classification: H01L

Abstract:
1. A non-volatile semiconductor storage device comprising: a memory cell region formed above a substrate, the memory cell region including a plurality of memory cells in a matrix, the plurality of memory cells formed in a plurality of layers of conductive material stacked above the substrate such that at least one memory cell in the matrix is between at least one other memory cell in the matrix and the substrate; a capacitive component formed above the substrate and in the plurality of layers of conductive material stacked above the substrate; a first electrode of the capacitive component, the first electrode formed in the plurality of layers of conductive material stacked above the substrate; a second electrode of the capacitive component, the second electrode separated from the first electrode by an insulating material and formed in the plurality of layers of conductive material stacked above the substrate; wherein the plurality of layers of conductive material comprises alternating stacked layers of a first conductive material and a second conductive material, the first conductive material and the second conductive material having different etch rates.