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公开(公告)号：US20220206232A1
公开(公告)日：2022-06-30
申请号：US17551543
申请日：2021-12-15
发明人： Keren ZHANG , Ankit VORA , Igor ABRAMSON , Nihar Ranjan MOHANTY
摘要： A multi-layer waveguide display includes a base waveguide layer, one or more grating couplers on one or two surfaces of the base waveguide layer, an overcoat layer on each grating coupler of the one or more grating couplers and filling grating grooves of the grating coupler, and a first waveguide layer stack on a first side of the base waveguide layer. The first waveguide layer stack includes one or more polymer layers. Each of the one or more polymer layers is characterized by a respective refractive index lower than the refractive index of the base waveguide layer. Each polymer layer is formed in a plurality of process cycles, where each process cycle includes dispensing a two-dimensional array of droplets of a resin material to form a thin layer and cross-linking the thin layer to form a sublayer of the polymer layer.
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公开(公告)号：US20220204790A1
公开(公告)日：2022-06-30
申请号：US17555101
申请日：2021-12-17
发明人： Keren ZHANG , Ankit VORA , Igor ABRAMSON , Sara AZARI
IPC分类号： C09D11/38 , C09D11/106 , B41M5/00 , B41M3/00 , F21V8/00
摘要： A formulation for inkjet printing includes one or more solvents and a plurality of nanoparticles mixed with the one or more solvents. The plurality of nanoparticles has a first refractive index greater than 1.9. A method includes depositing a layer of the formulation by inkjet printing onto a substrate having a non-flat. The method thereby forms coating of the formulation having a first surface conforming to the non-flat surface of the substrate and a second surface, opposite to the first surface, being a flat surface. An optical device includes a surface relief grating and a coating layer disposed on the surface relief grating. The coating layer includes a plurality of nanoparticles having a refractive index greater than 1.45 and a resin. The plurality of nanoparticles has functional ligands cross-linked with the resin.
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