Multi-Structure Pore Membrane and Pixel Structure
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United States of America Patent
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Issued Date -
May 22, 2014
app pub date -
Nov 20, 2012
filing date -
Nov 20, 2012
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Abstract
Methods are provided for fabricating a multi-structure pore membrane. In one method, an anodized aluminum oxide (AAO) template is formed with an array of pores exposing underlying regions of a conductive layer top surface. A plurality of photoresist layers is patterned to sequentially expose a plurality of AAO template sections. Each exposed AAO template section is sequentially etched to widen pore diameters, so that each AAO template section may be associated with a corresponding unique pore diameter. A target material is deposited in the pores of the AAO template and, as a result, an array of target material structures is formed on the top surface, where the target material structures associated with each AAO template section have a corresponding diameter. Also provided is a multi-structure pixel device formed with subpixels having different structure dimensions.
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