Pixelligent Technologies LLC

University of Pennsylvania

Uchicago Argonne, LLC

Gregory D Cooper

Zhiyun Chen

Wei Xu

Erin F Fleet

Selina Monickam

Richard M Mohring

Xia Bai

Linfeng Gou

Andrew Case

Zehra Serpil Gonen-Williams

Maneesh Bahadur

Jun Xu

Serpil Gonen Williams

Robert Swisher

Lei Zheng

James Criniti

Darryl Peters

Serpil Gönen

Robert W Carpick

George R Fenske

Nitya Nand Gosvami

Aaron C Greco

Brian Wehrenberg

Imene Lahouij

Andrew Jackson

Harman Khare

Nicholaos G Demas

Robert A Erck

Jin-O Choi

Z Serpil Gonen Williams

Larry F Thompson

Nitya Gosvami

The present disclosure provides a high refractive index acrylic formulation embedded with sub-10 nm metal oxide nanocrystals. The formulation is ideal for high refractive index, high transparency coating for a variety of optical applications including OLED lighting.

Nanocomposite formulations for optical applications

Light-emitting devices and methods of making the same are described whereby lenses of any array include a material with a higher refractive index than an encapsulation layer of a substrate layer, the refractive index of the material being in a range of greater than 1.7 to 1.9 at 400 nm. The material forming the lenses includes nanocomposite comprised of inorganic nanocrystals and a polymeric matrix, wherein the nanocrystals are selected from the group consisting of ZrO, ZnO, MgO, HfO, NbO, TaOand YO. A 3-4 micron thick sample of the nanocomposite has an optical transmittance of at least 80% over a range of 440 nm to 800 nm.

Advanced light extraction structure

The present disclosure provides nanocrystals(s) containing silicone capping agent(s). Dispersions containing the nanocrystal(s) and at least one of silicone monomer(s), silicone pre-polymer(s), and silicone polymer(s), and optionally additionally containing a solvent are also described. Cured dispersions, compositions of nanocrystal(s) and LEDs and related structures containing the composition(s) are provided in the present disclosure.

High refractive index silicone nanocomposites

The presently disclosed technology relates to a nano-additives to improve the performance of lubricants, oils, and greases. More specifically, the presently disclosed technology relates to applying capped metal oxide nanoparticles, such as capped zirconia nanoparticles, in the lubricants to produce a tribofilms on the lubricating surfaces to provide wear protection to the said surfaces. Also, the interaction of the capped zirconia nanoparticles with other commonly used additives in lubricants may further optimize the performance of the resulting tribofilms.

Nano-additives enabled advanced lubricants

This presently disclosed technology relates Organic Light Emitting Diodes (OLEDs), more particularly it relates to OLED display light extraction and nanocomposite formulations that can be used for the light extraction structure.

The current disclosure relates to a nanocomposites coating including metal oxide nanocrystals, the nanocomposites further include a mixture of acrylates monomers and oligomers to provide a curable coating that provides high refractive index, high transmittance, and high temperature stability.

High refractive index nanocomposite

The present disclosure provides nanocrystal(s) containing silicone capping agent(s). Dispersions containing the nanocrystal(s) and at least one of silicone monomer(s), silicone pre-polymer(s), and silicone polymer(s), and optionally additionally containing a solvent are also described. Cured dispersions, compositions of nanocrystal(s) and LEDs and related structures containing the composition(s) are provided in the present disclosure.

The present invention relates to an OLED internal light extraction scheme with graded-index layer and embedded scattering particles.

High refractive index nanocomposite layer

This presently disclosed technology relates to Organic Light Emitting Diodes (OLEDs), more particularly it relates to OLED display extraction and nanocomposite formulations that can be used for the light extraction structure. The OLEDs comprise, in order, an encapsulation layer or a substrate layer, an array of lenses, and an array of light emitting pixels at least partially covered by said array of lenses, wherein at least one of the lenses covers at least one of the pixel, and said lenses comprises a material with higher refractive index than the encapsulation layer or substrate layer.

Preparation of semiconductor nanocrystals and their dispersions in solvents and other media is described. The nanocrystals described herein have small (1-10 nm) particle size with minimal aggregation and can be synthesized with high yield. The capping agents on thews-synthesized nanocrystals as well as nanocrystals which have undergone cap exchange reactions result in the formation of stable suspensions in polar and nonpolar solvents which may then result in the formation of high quality nanocomposite films.

Semiconductor nano-sized particles possess unique optical properties, which make them ideal candidates for various applications in the UV photolithography. In this patent several such applications, including using semiconductor nano-sized particles or semiconductor nano-sized particle containing materials as highly refractive medium in immersion lithography, as anti-reflection coating in optics, as pellicle in lithography and as sensitizer in UV photoresists are described.

Applications of semiconductor nano-sized particles for photolithography

Domain segregation of polymer blends or block copolymers in the presence of thermal conducting high aspect ratio nanocrystals leads to preferential placement of conductive filler either inside one domain, which promote the self-assembly of a thermal and/or electrical conducting pathway composed of high aspect ratio filler. The self-assembly of such thermal and/or electrical conducting pathway effectively enhances the thermal and/or electrical conductivity of the composite with significantly less amount of filler.

Growing community of inventors

Fulton, MD, United States of America

Gregory D Cooper