STAMP TREATMENT TO GUIDE SOLVENT REMOVAL DIRECTION AND MAINTAIN CRITICAL DIMENSION

    公开(公告)号:US20230194982A1

    公开(公告)日:2023-06-22

    申请号:US18091525

    申请日:2022-12-30

    CPC classification number: G03F7/0015 G03F7/0002

    Abstract: Embodiments described herein provide method a method of forming optical devices using nanoimprint lithography that maintains the critical dimension of the optical device structures. The method described herein accounts for lateral shrinkage of the solvent based resist during the cure process to maintain the critical dimension. The method includes disposing a stamp coating on a stamp having an inverse optical device pattern of inverse structures. The coating is disposed on sidewalls, inverse structure bottom, and inverse structure top of the inverse structures. The method includes etching the inverse structures such that the stamp coating remains on the sidewalls and is removed from the inverse structure top and bottom. The method further includes imprinting the stamp into an optical device material disposed and subjecting the imprintable optical device material to a cure process which transfers the optical device critical dimension to the optical device structures of the optical device pattern.

    INKJET GRADIENT INDEX MATERIAL TO MODULATE GRATING DIFFRACTION EFFICIENCY

    公开(公告)号:US20240142690A1

    公开(公告)日:2024-05-02

    申请号:US18473079

    申请日:2023-09-22

    Abstract: An apparatus for waveguides and a method of fabricating a waveguide combiner having at least one grating with trenches gap-filled with variable refractive index materials. At least two trenches of at least one grating includes a first gap-fill material having a first volume and a first refractive index, and a second gap-fill material having a second volume and a second refractive index different than the first refractive index. Control of the deposition of first volume and the deposition of second volume in an inkjet deposition process provide for the formation of the grating with two trenches that have different refractive indices and different gap-fill depths. The first gap-fill material and the second gap-fill material merge to form the gap-filler. Therefore, by controlling the varied refractive indices and different gap-fill depths the waveguide combiner is optimized by efficiency or a color uniformity.

    POLISHING PADS HAVING IMPROVED PORE STRUCTURE

    公开(公告)号:US20220362904A1

    公开(公告)日:2022-11-17

    申请号:US17321694

    申请日:2021-05-17

    Abstract: Embodiments herein generally relate to polishing pads and methods of forming polishing pads. A method of forming a polishing pad includes (a) dispensing droplets of a pre-polymer composition and droplets of a sacrificial material composition onto a surface of a previously formed print layer according to a predetermined droplet dispense pattern. The method includes (b) at least partially curing the dispensed droplets of the pre-polymer composition to form a print layer. The method includes (c) sequentially repeating (a) and (b) to form a polishing layer having a plurality of pore-features formed therein. The pre-polymer composition includes a multifunctional acrylate component. A curing rate of the dispensed droplets of the pre-polymer composition including the multifunctional acrylate component when exposed to a first dose of electromagnetic radiation is greater than a curing rate of the pre-polymer composition without the multifunctional acrylate component when exposed to the same first dose of electromagnetic radiation.

    FORMING OPTICAL DEVICE USING MIXED-PARTICLE LAYER

    公开(公告)号:US20240001700A1

    公开(公告)日:2024-01-04

    申请号:US18337294

    申请日:2023-06-19

    Abstract: A method of forming an optical device is provided. The method includes forming a first layer over a plurality of optical structures, the first layer including a first plurality of nanoparticles and a second plurality of nanoparticles. The first plurality of nanoparticles and the second plurality of nanoparticles are formed of a first material, the first plurality of nanoparticles have a first average volume, greater than 95% of the first plurality of nanoparticles have a volume within 10% of the first average volume, the second plurality of nanoparticles have a second average volume, greater than 95% of the second plurality of nanoparticles have a volume within 10% of the second average volume, and the second average volume is at least 25% larger the first average volume.

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