Assembly processes for three-dimensional microstructures
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United States of America Patent
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Mar 28, 2019
app pub date -
Feb 28, 2017
filing date -
Feb 28, 2017
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Abstract
Three-dimensional microstructure devices having substantially perfect alignment and leveling of a three-dimensional microstructure with respect to a substrate having a plurality of discrete electrodes and relating fabricating methods are disclosed. Seed layers are deposited onto the discrete electrodes of the substrate, and the three-dimensional microstructure is bonded adjacent to the seed layers. A substantially uniform sacrificial layer is deposited onto exposed surfaces of the three-dimensional microstructure. A plurality of first gaps exists between the seed layers and corresponding regions of the sacrificial layer. Conductive layers are deposited to fill the first gaps. The sacrificial layer is dissolved to create a second plurality of gaps between the conductive layers and the corresponding regions of the three-dimensional microstructure. The second gaps are substantially uniform.
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