Patent ID: 9627550
Date: 2017-04-18
CPC Classifications: H01L,H05K

Claim:
1. A method of forming vertically-stacked structures, comprising: forming an etchstop material over a base; forming a stack of alternating electrically conductive levels and electrically insulative levels over the etchstop material; forming an electrically insulative panel that extends through the stack; the panel having a pair of opposing sides along the stack; removing some sections of the panel while leaving other sections remaining; openings being formed where sections of the panel are removed; each opening having a first pair of opposing sides along the stack, and having a second pair of opposing sides along remaining sections of the panel; forming cavities extending into the electrically conductive levels along the first pair of opposing sides of the openings; forming dielectric material along exposed edges of the electrically conductive levels within the cavities; after forming the dielectric material, forming electrically conductive material within the cavities; and extending the openings through the etchstop material.