公开(公告)号：US20230340309A1

公开(公告)日：2023-10-26

申请号：US18125618

申请日：2023-03-23

Applicant: Meta Platforms Technologies, LLC

Inventor： Alejo LIFSCHITZ ARRIBIO ,  Anthony PHAN ,  Austin LANE

IPC: C09J163/00 ,  G02B27/01 ,  F21V8/00 ,  C09J11/06 ,  C09J5/00 ,  C08G59/30 ,  C08G59/22 ,  B32B7/12 ,  B32B17/06 ,  B32B37/12

CPC classification number: C09J163/00 ,  G02B27/0172 ,  G02B6/0076 ,  C09J11/06 ,  C09J5/00 ,  C08G59/306 ,  C08G59/223 ,  B32B7/12 ,  B32B17/06 ,  B32B37/1284 ,  G02B2027/0123 ,  G02B2027/0178 ,  C09J2400/146 ,  C09J2463/00 ,  B32B2307/7375 ,  B32B2255/26 ,  B32B2037/1253 ,  B32B2315/08 ,  B32B2250/40 ,  B32B2307/412 ,  B32B2457/20 ,  B32B2551/00

Abstract: A liquid optically clear adhesive (LOCA) for bonding optical substrates includes siloxane and epoxy-containing oligomers, a UV-activated photo-acid generator, a cross-linker additive, a solvent; and a reactive plasticizer, such as an additive of Structure 1. In one example, the additive of Structure 1 constitutes about 1-7% of a total mass of the LOCA excluding the solvent. R1, R2, and R3 of Structure 1 include methoxide, ethoxide, propoxide, or a combination thereof. R4 of Structure 1 includes an alkyl chain that is linear or branched and includes 2-8 carbons. The LOCA material is characterized by a refractive index equal to or greater than about 1.6 at 450 nm and an optical absorption below about 0.1% per micrometer of a thickness of the LOCA material.

公开(公告)号：US20230160820A1

公开(公告)日：2023-05-25

申请号：US17968779

申请日：2022-10-18

Applicant: Meta Platforms Technologies, LLC

Inventor： Austin LANE ,  Ankit VORA ,  Richard FARRELL ,  Keren ZHANG

IPC: G01N21/47 ,  G03F7/20 ,  G01N21/956

CPC classification number: G01N21/4788 ,  G01N21/956 ,  G03F7/70625 ,  G01N2021/95676

Abstract: A method is provided. The method includes forming a shrink material layer over a substrate including a photoresist pattern. The method also includes exposing the substrate with the shrink material layer to an activating radiation via a grey-tone mask that provides a predetermined light transmittance profile for the activating radiation. The method also includes removing at least a portion of the shrink material layer.

公开(公告)号：US20220334289A1

公开(公告)日：2022-10-20

申请号：US17720058

申请日：2022-04-13

Applicant: Meta Platforms Technologies, LLC

Inventor： Keren ZHANG ,  Sara AZARI ,  Austin LANE ,  Feyza DUNDAR ARISOY ,  Ankit VORA ,  Nihar Ranjan MOHANTY ,  Vivek GUPTA

IPC: G02B1/11 ,  G02B27/01 ,  C09D133/08 ,  C08K9/04 ,  B05D1/00

Abstract: An optical device includes a substrate, a first surface-relief grating including grooves and ridges formed on or in the substrate, a first overcoat layer in the grooves of the first surface-relief grating, and a first antireflective layer on the first overcoat layer. The ridges of the first surface-relief grating include high-refractive index, photoactive metal oxide nanoparticles and a material of the first overcoat layer in regions between the metal oxide nanoparticles, or the first overcoat layer includes the metal oxide nanoparticles and a material of the first antireflective layer in regions between the metal oxide nanoparticles. Methods of fabricating the optical device are also described.

公开(公告)号：US20230037929A1

公开(公告)日：2023-02-09

申请号：US17815944

申请日：2022-07-29

Applicant: Meta Platforms Technologies, LLC

Inventor： Austin LANE ,  Richard FARRELL ,  Ankit VORA

IPC: F21V8/00 ,  G02B27/01

Abstract: Layered waveguides, multi-layer waveguide displays with layered waveguides, and methods of fabricating layered waveguides with selective bonding material deposition and/or patterning.