Eastman-kodak Company

Industrial Technology Research Institute

Global Oled Technology LLC

Krishnan Chari

Charles M Rankin

Tiecheng A Qiao

Deepak Shukla

Sundaram Krishnamurthy

Douglas Lincoln Vizard

Charles Warren Lander

Wendell F Smith, Jr

Thomas R Welter

Debasis Majumdar

Paul D Yacobucci

Liang-Sheng Liao

Samuel Chen

Martin C Kaplan

Michael W Crawley

Joel D Shore

Paul P Spara

James T Beck

Joaquin Calcines

John C Kowalczyk

Ronald S Cok

Richard P Szajewski

Yuan-Sheng Tyan

Allan Francis Sowinski

Wayne A Bowman

David T Southby

Lyn Marie Irving

David Darrell Miller

Michael J Simons

Glen C Irvin, Jr

Paul L Zengerle

Jin-Shan Wang

Joseph Salvatore Sedita

Brian Thomas

John T Keech

Donald R Preuss

Thomas L Penner

David Hoke

David M Johnson

Glenn M Brown

Zhihao Yang

John F Sawyer

Sidney J Bertucci

Janet N Younathan

Douglas E Corbin

Dennis R Perchak

Erica N Montbach

Harry A Hoyen, Jr

Ramasubramaniam Hanumanthu

Jeffrey W Schmoeger

Robledo O Gutierrez

Anthony E Taddei

The present invention relates to photo-tunable dopant compositions comprising a photo-reactive chiral compound capable of undergoing a photochemical reaction resulting in the loss of chirality, and a triplet sensitizer. The present invention also relates to a display comprising a substrate, a liquid crystalline layer thereon, wherein the liquid crystalline layer comprises a nematic host, at least one chiral dopant, a photo-reacted compound, and a triplet sensitizer, and at least one transparent conductive layer. The present invention also relates to a method of tuning a cholesteric liquid crystal material comprising providing at least one mesogenic compound, at least one triplet sensitizer, and at least one photo-reactive chiral compound; combining the at least one mesogenic compound, at least one triplet sensitizer, and at least one photo-reactive chiral compound to form a mixture; and irradiating the mixture for a period of time.

Sensitized photochemical switching for cholesteric liquid crystal displays

A method of manufacturing a micro-lens array and light-emitting device, comprising forming a first structured polymer film with close packed surface cavities having a mean diameter of less than 20 micrometers and a relatively lower surface energy surface, forming a transparent second structured film with an array of microlenses formed thereon corresponding to the cavities of the first structured film, wherein the second structured film comprises a relatively high surface energy material and has a refractive index greater than 1.45, and wherein the microlenses are randomly distributed, separating the second structured film with the micro-lens array from the first structured polymer film, and attaching the second structured film to a transparent substrate or cover of a light-emitting device through which light is emitted. Use of microlens arrays formed from relatively high surface energy materials enables matching refractive index of microlens array to that of light-emitting devices substrate or cover through which light is emitted and relatively high elastic modulus providing good scratch resistance.

Light emitting device with microlens array

A method of manufacturing a micro-lens array and light-emitting device, including forming a first structured polymer film with close packed surface cavities having a mean diameter of less than 20 micrometers and a relatively lower surface energy surface, forming a transparent second structured film with an array of microlenses formed thereon corresponding to the cavities of the first structured film, wherein the second structured film includes a relatively high surface energy material and has a refractive index greater than 1.45, and wherein the microlenses are randomly distributed, separating the second structured film with the micro-lens array from the first structured polymer film, and attaching the second structured film to a transparent substrate or cover of a light-emitting device through which light is emitted. Use of microlens arrays formed from relatively high surface energy materials enables matching refractive index of microlens array to that of light-emitting devices substrate or cover through which light is emitted and relatively high elastic modulus providing good scratch resistance.

The present invention relates to a display comprising at least one substrate, at least one electronically modulated imaging layer and at least one electrically conductive layer, wherein the electronically modulated imaging layer comprises a self-assembled, close-packed, ordered monolayer of domains of guest-host material, wherein the guest-host material comprises a dichroic or pleochroic dye guest in a light modulating host in a fixed polymer matrix, and wherein the appearance of the display is independent of viewing angle.

Single substrate guest-host polymer dispersed liquid crystal displays

The present invention relates to a display comprising at least one substrate, at least one electrically conductive layer and at least one electronically modulated imaging layer, wherein the electronically modulated imaging layer comprises a self-assembled, close-packed, ordered monolayer of domains of electrically modulated material in a random coil fixed polymer matrix and filler.

High performance flexible display with improved mechanical properties having electrically modulated material mixed with binder material in a ratio between 6:1 and 0.5:1

A light-emitting device, comprising: a light emitting element on a first side of a transparent substrate or cover through which light is emitted; and a microlens array on a second side, opposite to the first side, of the transparent substrate or cover though which light is emitted; wherein the microlens array comprises individual hemispherical shaped microlenses having a mean diameter of less than 20 micrometers and a mean microlens height to diameter ratio of greater than 0.30, and has a microlens area fill factor greater than 0.8.

The present invention relates to a high contrast reflective display comprising a substrate, at least one electronically modulated imaging layer, wherein the electronically modulated imaging layer comprises a uniformly thick, close-packed, ordered monolayer of domains of electrically modulated material in a fixed polymer matrix, at least one barrier layer, wherein the barrier layer is conductive in a direction perpendicular to the substrate, and at least one electrically conductive layer. The invention also relates to a method of making the display with a barrier layer comprising anisotropic particles and orienting the anisotropic conductor to produce a barrier layer conductive in a direction perpendicular to the substrate.

Displays with low driving voltage and anisotropic particles

The present invention relates to a phototunable chiral dopant represented by the following structure: wherein:A, B, C and D are independent divalent groups; X and Z are any independently selected substituent; n is an integer and independently varies from 0 to 3; q is an integer and independently varies from 0 to 5; RNG1 and RNG2 independently represent any ring group; m represents an integer independently varying from 0 to 4; p represents an integer independently varying from 1 to 4; Q independently represents a carbon C&#x2014;R, or nitrogen, wherein Ris independently hydrogen or any substituent. The invention also relates to the use of the dopant in a liquid crystalline composition and a display containing the same, as well as a material composition comprising an enantiomeric excess of one enantiomer of the compound.

Photochemically active chiral compounds and compositions containing the same

The present invention relates to a display comprising at least one substrate and at least one electronically modulated imaging layer and at least one electrically conductive layer, wherein the electronically modulated imaging layer comprises a self-assembled, close-packed, ordered monolayer of domains of electrically modulated material in a water insoluble, hydrophobic polymer matrix and the at least one electrically conductive layer comprises electronically conductive polymer and a conductivity enhancing agent.

Display comprising liquid crystal droplets in a hydrophobic binder

The present invention relates to a high contrast reflective display comprising at least one substrate, at least one electrically conductive layer and at least one close-packed, ordered monolayer of domains of electrically modulated material in a fixed, preferably crosslinked, polymer matrix and a method of making the same.

Reflective display based on liquid crystal materials

A display sheet comprising a substrate carrying layers of material; including a polymer-dispersed chiral-nematic liquid-crystal layer having a first high reflection state within the visible light spectrum and a second less-reflective state in said spectrum, said states being changeable by an electric field, which states can be maintained in the absence of an electric field; a first transparent conductor disposed over said polymer-dispersed chiral-nematic liquid-crystal layer; and a second conductor, wherein said imaging layer is substantially a monolayer of said domains comprises a mixture of at least two differently reflecting liquid crystal materials, in which the &#x3bb; maximums of the two materials are separated by 100 to 250 nm.

Reflective chiral-nematic liquid crystal display with broadband reflection

A display sheet is disclosed comprising, a substrate, first transparent conductors, second conductors and, between first and second conductors, at least one imaging layer comprising a substantial monolayer of isolated domains of liquid-crystal material, dispersed in a continuous matrix, wherein said domains of liquid-crystal material comprises a mixture of at least two populations, a first population comprising a first liquid-crystal material having a first &#x3bb;within the infrared spectral region and a second population comprising a second liquid-crystal material having a second &#x3bb;within the visible spectral region. Alternately, the imaging layer can comprise a substantial monolayer of isolated domains of liquid-crystal material comprising a population of domains comprising a liquid-crystal material having a &#x3bb;between 700 and 800 and having a half-peak width that extends into both the visible spectrum region and the infrared spectral region.

Reflective liquid crystal display with infrared reflection

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Fairport, NY, United States of America

Krishnan Chari