Applied Materials, Inc.

Hewlett-packard Development Company, L.p.

University of Southern California

Daihua Zhang

Hou Tee Ng

Nag B Patibandla

Yingdong Luo

Sivapackia Ganapathiappan

Omer Gila

Ludovic Godet

Napoleon J Leoni

Mingwei Zhu

Kang Luo

Henryk Birecki

Han-Wen Chen

Kyuil Cho

Rami Hourani

Kazuya Daito

Alexey Stepanov

Xiaopei Deng

Elsa Massonneau

Mark Edward Thompson

Visweswaren Sivaramakrishnan

Xiaolei Liu

Michael H Lee

Chongwu Zhou

Ilanit Mor

Mahendran Chidambaram

Koungmin Ryu

Bahubali S Upadhye

Hemantha Raju

Yossi Rosen

Zhengping Yao

Kenneth S Ledford

Evgueni Polikarpov

James Ly

Cody Schlenker

Rajeev Bajaj

Samarth Bhargava

Daniel Redfield

Kevin Messer

William David Holland

Ashwin Chockalingam

Takashi Kuratomi

Jinrui Guo

Giorgio Cellere

David Alexander Sell

Uma Sridhar

Tom Anthony

Sudhakar Madhusoodhanan

Nai-Wen Pi

John Rusconi

Michael David-Scott Kemp

Jinyu Lu

Jingyi Yang

Alexia Adilene Portillo Rivera

Embodiments of the present disclosure generally relate to methods for forming a waveguide. Methods may include measuring a waveguide substrate, the waveguide having a substrate thickness distribution; and depositing an index-matched layer onto a surface of the waveguide, the index-matched layer having a first surface disposed on the waveguide substrate and a second surface opposing the first surface, wherein the index-matched layer is disposed only over a portion of the waveguide substrate, and a device slope of a second surface of the index-matched layer is substantially the same as the waveguide slope of the first surface of the waveguide.

Total or local thickness variation for optical devices

A photocurable composition includes quantum dots, quantum dot precursor materials, a chelating agent, one or more monomers, and a photoinitiator. The quantum dots are selected to emit radiation in a first wavelength band in the visible light range in response to absorption of radiation in a second wavelength band in the UV or visible light range. The second wavelength band is different than the first wavelength band. The quantum dot precursor materials include metal atoms or metal ions corresponding to metal components present in the quantum dots. The chelating agent is configured to chelate the quantum dot precursor materials. The photoinitiator initiates polymerization of the one or more monomers in response to absorption of radiation in the second wavelength band.

Chelating agents for quantum dot precursor materials in color conversion layers for micro-LEDs

A method of fabricating a multi-color display includes forming a host matrix over a display having an array of light emitting diodes. The host matrix is sensitive to ultraviolet light. A first plurality of light emitting diodes in a first plurality of wells are activated to illuminate a portion of the host matrix to cause the portion of the host matrix to develop internal porous structures. A first photo-curable fluid including a first color conversion agent is dispensed. The first plurality of light emitting diodes in the first plurality of wells are activated to illuminate and cure the first photo-curable fluid to form a first color conversion layer over each of the first plurality of light emitting diodes, and an uncured remainder of the first photo-curable fluid is removed.

Print process for color conversion layer using porous host or positive photoresist

Embodiments of the present disclosure generally relate to optical devices. More specifically, embodiments described herein relate to optical devices and methods of manufacturing a patterned optical device film on an optical device substrate. According to certain embodiments, an inkjet deposition process is used to deposit a patterned inkjet coating layer on the optical device substrate. A deposition process may then be used to deposit an optical device material on the patterned inkjet coating and the optical device substrate. The patterned inkjet coating on the optical device substrate may then be washed with an appropriate detergent to lift-off the patterned inkjet coating layer from the optical device substrate to form the patterned optical device film.

Patterning of optical device films via inkjet soluble mask, deposition, and lift-off

The present disclosure generally relates to a method and apparatus for forming a substrate having a graduated refractive index. A method of forming a waveguide structure includes expelling plasma from an applicator having a head toward a plurality of grating structures formed on a substrate. The plasma is formed in the head at atmospheric pressure. The method further includes changing a depth of the plurality of grating structures with the plasma by removing grating material from the plurality of grating structures.

Optical device having structural and refractive index gradation, and method of fabricating the same

An LED display fabrication tool includes a plurality of process chambers and a plurality of transfer chambers. The plurality of process chambers include first and second dispensing chambers to deliver first and second color conversion precursors onto a workpiece for fabrication of a light emitting diode (LED) displays, and first and second washing/drying chambers to remove uncured portions of the first and second color conversion precursors from the workpiece and then dries the workpiece. The plurality of transfer chambers are coupled to two process chambers by two respective sealable ports. First and second curing stations cure the precursors to form the first and second color conversion layers over a first set of LEDs on the workpiece.

System configurations for fabrication of micro-LED displays

A multi-color display includes a backplane having backplane circuitry, an array of micro-LEDs electrically integrated with backplane circuitry of the backplane, a color conversion layer over each of a plurality of light emitting diodes, and a plurality of isolation walls separating adjacent micro-LEDs of the array.

Assembly of display with color conversion layer and isolation walls

A formulation, system, and method for additive manufacturing of a polishing pad. The formulation includes monomer, dispersant, and nanoparticles. A method of preparing the formulation includes adding a dispersant that is a polyester derivative to monomer, adding metal-oxide nanoparticles to the monomer, and subjecting the monomer having the nanoparticles and dispersant to sonication to disperse the nanoparticles in the monomer.

Additive manufacturing of polishing pads

A method of fabricating a multi-color display includes dispensing a photo-curable fluid over a display having an array of light emitting diodes (micro-LEDs) disposed below a cover layer. The cover has an outer surface with a plurality of recesses, and the photo-curable fluid fills the recesses. The photo-curable fluid includes a color conversion agent. A plurality of LEDs in the array are activated to illuminate and cure the photo-curable fluid to form a color conversion layer in the recesses over the activated LEDs. This layer will convert light from these LEDs to light of a first color. An uncured remainder of the photo-curable fluid is removed. Then the process is repeated with a different photo-curable fluid having a different color conversion agent and a different plurality of LEDs. This forms a second color conversion layer in different plurality of recesses to convert light from these LEDs to light of a second color.

Display formed by curing of color conversion layer in recess

A multi-color display includes a backplane having backplane circuitry, an array of micro-LEDs electrically integrated with backplane circuitry of the backplane, a first color conversion layer over each of a first plurality of light emitting diodes, a second color conversion layer over each of a second plurality of light emitting diodes, and a plurality of isolation walls separating adjacent micro-LEDs of the array. The micro-LEDs of the array are configured to generate illumination of the same wavelength range, the first color conversion layer converts the illumination to light of a first color, and the second color conversion layer converts the illumination to light of a different second color.

Display with color conversion layer and isolation walls

Embodiments described herein provide for a fluid management system and a method of utilizing the fluid management system. The fluid management system includes a servicing fluid management system and an ink management system. The servicing fluid management system and the ink management system run in parallel within an inkjet chamber. The ink management system supports the flow of inkjet materials between a waste tank, one or more inkjet material supply tanks, an ink management module, and the inkjet printer. The servicing fluid management system supports the flow of servicing fluids between the waste tank, one or more servicing fluid supply tanks, a servicing fluid management module, and the inkjet printer.

Fluid management system for inkjet machines

A photocurable composition includes a nanomaterial selected to emit radiation in a first wavelength band in the visible light range in response to absorption of radiation in a second wavelength band in the UV or visible light range. The second wavelength band is different than the first wavelength band. The photocurable composition further includes one or more (meth)acrylate monomers, a thiol crosslinker, and a photoinitiator that initiates polymerization of the one or more (meth)acrylate monomers in response to absorption of radiation in the second wavelength band. A light-emitting device includes a plurality of light-emitting diodes and the cured photocurable composition in contact with a surface through which radiation in a first wavelength band in the UV or visible light range is emitted from each of the light-emitting diodes.

Quantum dot formulations with thiol-based crosslinkers for UV-LED curing

Embodiments described herein relate to an inkjet printing platform. The inkjet printing platform is utilized for fabrication of optical films and optical device structures. The inkjet printing platform includes a transfer chamber, one or more inkjet chambers, a plurality of auxiliary modules, a substrate flipper, and load ports. The inkjet printing platform is operable to perform an inkjet printing process on a substrate to form an optical film and/or an optical device.

Inkjet platform for fabrication of optical films and structures

Embodiments of the present disclosure generally relate to optical devices. More specifically, embodiments described herein relate to optical devices and methods of manufacturing optical devices having optical device structures with at least one of varying depths or refractive indices across the surface of a substrate. According to certain embodiments, an inkjet process is used to deposit a volumetrically variable optical device that is etched to form a diffractive optic element (DOE). Volumetrically variable can relate to the thickness of the optical device, or the relative volume of two or more diffractive materials deposited in combination. According to other embodiments, a single-profile DOE is deposited on a substrate and an inkjet process deposits a volumetrically variable organic material over the DOE. The DOE and organic material are etched to modify the profile of the structure, after which the organic material is removed, leaving the modified-profile DOE.

Fabrication of diffractive optic element having a variable refractive index profile by inkjet printing deposition

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Los Altos, CA, United States of America

Daihua Zhang