Hewlett-packard Development Company, L.p.

Applied Materials, Inc.

Hewlett-packard Company

Sri International

Sivapackia Ganapathiappan

Hou Tee Ng

Nag B Patibandla

Howard S Tom

Yingdong Luo

Krzysztof Nauka

Kent D Vincent

Rajeev Bajaj

Daniel Redfield

Khe C Nguyen

Daihua Zhang

Boyi Fu

Ashwin Chockalingam

Lihua Zhao

Albert Teishev

Mingwei Zhu

Yan Zhao

Zhang-Lin Zhou

Jayprakash C Bhatt

Mayu Felicia Yamamura

Zeying Ma

Mahendra Christopher Orilall

Subhash C Narang

Howard Doumaux

Jason Garcheung Fung

Han-Wen Chen

Kristopher J Erickson

Kyuil Cho

Asutosh Nigam

Uma Sridhar

Fred Conrad Redeker

Vladek P Kasperchik

Byung Sung Kwak

Doris Pik-Yiu Chun

Lisong Xu

Mario Dagio Cornejo

Jitender Mohan Khurana

Sei-ichi Yokoi

Sudhakar Madhusoodhanan

Richard Stanley Williams

Alexander N Govyadinov

Manoj K Bhattacharyya

Keshava A Prasad

James Elmer Abbott, Jr

Ankit Vora

Palitha Wickramanayake

Kulandaivelu Sivanandan

Ashavani Kumar

Ranga Rao Arnepalli

Sean Xiao-An Zhang

Amritanshu Sinha

Gun Young Jung

Ludovic Godet

Zhiyong Li

Yong Qin Chen

Omer Gila

Thomas C Anthony

Dominic J Benvegnu

Henryk Birecki

Gary A Gibson

Alexey S Kabalnov

Ali Emamjomeh

Michael H Lee

Alejandro Manuel De Pena

George Sarkisian

Raymond J Adamic

Eric Hoarau

You Wang

David Michael Ingle

Susanna C Ventura

Stephen G Rudisill

Laurie S Mittelstadt

Jake Wright

Rami Hourani

Sergio Brandriss

Doris Chun

Aniruddh Jagdish Khanna

Edward Dale Davis

Amita Joshi

Tilak R Bhardwaj

Ian Matthew McMackin

Srobona Sen

Atul Bhaskar Chaudhari

Tan Ha

Anthony Kipkorir

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

In one example, a non-transitory processor readable medium having instructions thereon that when executed cause an additive manufacturing machine to expose build material to a light source emitting monochromatic light within a band of wavelengths that includes a peak light absorption of a liquid coalescing agent to be dispensed on to the build material.

Lighting for additive manufacturing

Liquid dispersions of quantum dot particles include an acrylic medium having a boiling point in a range of from greater than or equal to 100° C. to less than or equal to 500° C., quantum dot particles dispersed in the acrylic medium, a photo-initiator, and a surface additive. The liquid dispersions of quantum dot particles are useful as stable liquid formulations that resist gelling for spin-coating and ink-jet printing of color conversion layers in the manufacture of LED and micro-LED panels for advanced displays. Methods of manufacturing light-emitting devices using the liquid dispersions of quantum dot particles are also disclosed.

Liquid dispersion of quantum dot particles

Liquid dispersions of quantum dot particles comprise an acrylic medium and quantum dot particles dispersed in the acrylic medium have an initial viscosity. The quantum particles comprise ligands attached to the quantum dot particles, the ligands comprising functional groups configured to stabilize the initial viscosity liquid dispersion of the quantum dot particles. The liquid dispersions of quantum dot particles are useful as stable liquid formulations that resist gelling for spin-coating and inkjet printing of color conversion layers in the manufacture of LED and micro-LED panel for advanced displays. Methods of manufacturing light-emitting devices using the liquid dispersions of quantum dot particles are disclosed.

Liquid dispersion of quantum dots in an acrylic monomer medium

Embodiments of the present disclosure generally relate to imprint compositions and materials and related processes useful for nanoimprint lithography (NIL). In one or more embodiments, an imprint composition contains one or more types of nanoparticles, one or more surface ligands, one or more solvents, one or more additives, and one or more acrylates.

High refractive index imprint compositions and materials and processes for making the same

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 system, formulation, and method for additive manufacturing of a polishing layer of a polishing pad. The formulation includes a urethane acrylate oligomer based on a difunctional polyol or difunctional polythiol. The techniques includes selecting the difunctional polyol or the difunctional polythiol to affect a property of the polishing layer. The formulation also includes a monomer and a photoinitiator. The viscosity of the formulation is applicable for 3D printing of the polishing layer.

Additive manufacturing of polishing pads

Embodiments described herein relate to integrated abrasive (IA) polishing pads, and methods of manufacturing IA polishing pads using, at least in part, surface functionalized abrasive particles in an additive manufacturing process, such as a 3D inkjet printing process. In one embodiment, a method of forming a polishing article includes dispensing a first plurality of droplets of a first precursor, curing the first plurality of droplets to form a first layer comprising a portion of a sub-polishing element, dispensing a second plurality of droplets of the first precursor and a second precursor onto the first layer, and curing the second plurality of droplets to form a second layer comprising portions of the sub-polishing element and portions of a plurality of polishing elements. Here, the second precursor includes functionalized abrasive particles having a polymerizable group chemically bonded to surfaces thereof.

Integrated abrasive polishing pads and manufacturing methods

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.

A photocurable composition includes a blue photoluminescent material, one or more monomers, and a photoinitiator that initiates polymerization of the one or more monomers in response to absorption of the ultraviolet light. The blue photoluminescent material is selected to absorb ultraviolet light with a maximum wavelength in a range of about 300 nm to about 430 nm and to emit blue light. The blue photoluminescent material also has an emission peak in a range of about 420 nm to about 480 nm. The full width at half maximum of the emission peak is less than 100 nm, and the photoluminescence quantum yield is in a range of 5% to 100%.

Blue color converter for micro LEDs

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

Embodiments herein generally relate to polishing pads and methods of forming polishing pads. A polishing pad includes a plurality of polishing elements. Each polishing element comprises an individual surface that forms a portion of a polishing surface of the polishing pad and one or more sidewalls extending downwardly from the individual surface to define a plurality of channels disposed between the polishing elements. Each of the polishing elements has a plurality of pore-features formed therein. Each of the polishing elements is formed of a pre-polymer composition and a sacrificial material composition. In some cases, a sample of the cured pre-polymer composition has a glass transition temperature (T) of about 80° C. or greater. A storage modulus (E′) of the cured pre-polymer composition at a temperature of 80° C. (E′80) can be about 200 MPa or greater.

Polishing pads for high temperature processing

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

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

Growing community of inventors

Los Altos, CA, United States of America

Sivapackia Ganapathiappan