High elongation interface between lens and waveguide for augmented reality assembly with improved reliability

Abstract

Embodiments of the present disclosure generally relate to optical devices including a high-elongation interface material, and related methods. In one or more embodiments, an optical device, includes at least one grating over a surface of a substrate. Each grating includes a plurality of structures and one or more gap fill materials over the plurality of structures. The optical device further includes an encapsulation material over the one or more gap fill materials and a high-elongation material over the encapsulation material. The high-elongation material has an elongation greater than or equal to

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