Operation/margin enhancement feature for surface-MEMS structure; sculpting raised address electrode
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United States of America Patent
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Jan 9, 2018
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app pub date -
Nov 3, 2014
filing date -
Nov 3, 2014
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Abstract
A method of forming a micro-electromechanical systems (MEMS) pixel, such as a DMD type pixel, by forming a substrate having a non-planar upper surface, and depositing a photoresist spacer layer upon the substrate. The spacer layer is exposed to a grey-scale lithographic mask to shape an upper surface of the spacer layer. A control member is formed upon the planarized spacer layer, and an image member is formed over the control member. The image member is configured to be positioned as a function of the control member to form a spatial light modulator (SLM). The spacer layer is planarized by masking a selected portion of the spacer layer with a grey-scale lithographic mask to remove binge in the selected portion.
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