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1. US20200165520 - MATRIX FORMULATION FOR POLYMER DISPERSED LIQUID CRYSTAL DISPLAYS IN LOW POWER DIRECT CURRENT (DC) ELECTROMAGNETIC FIELD APPLICATION

Office États-Unis d'Amérique
Numéro de la demande 16692567
Date de la demande 22.11.2019
Numéro de publication 20200165520
Date de publication 28.05.2020
Type de publication A1
CIB
C09K 19/54
CCHIMIE; MÉTALLURGIE
09COLORANTS; PEINTURES; PRODUITS À POLIR; RÉSINES NATURELLES; ADHÉSIFS; COMPOSITIONS NON PRÉVUES AILLEURS; UTILISATIONS DE SUBSTANCES, NON PRÉVUES AILLEURS
KSUBSTANCES POUR DES APPLICATIONS NON PRÉVUES AILLEURS; APPLICATIONS DE SUBSTANCES NON PRÉVUES AILLEURS
19Substances formant des cristaux liquides
52caractérisées par des constituants qui ne sont pas des cristaux liquides, p.ex. additifs
54Additifs n'ayant pas de mésophase spécifique
G02F 1/1334
GPHYSIQUE
02OPTIQUE
FDISPOSITIFS OU SYSTÈMES DONT LE FONCTIONNEMENT OPTIQUE EST MODIFIÉ PAR CHANGEMENT DES PROPRIÉTÉS OPTIQUES DU MILIEU CONSTITUANT CES DISPOSITIFS OU SYSTÈMES ET DESTINÉS À LA COMMANDE DE L'INTENSITÉ, DE LA COULEUR, DE LA PHASE, DE LA POLARISATION OU DE LA DIRECTION DE LA LUMIÈRE, p.ex. COMMUTATION, OUVERTURE DE PORTE, MODULATION OU DÉMODULATION; TECHNIQUES NÉCESSAIRES AU FONCTIONNEMENT DE CES DISPOSITIFS OU SYSTÈMES; CHANGEMENT DE FRÉQUENCE; OPTIQUE NON LINÉAIRE; ÉLÉMENTS OPTIQUES LOGIQUES; CONVERTISSEURS OPTIQUES ANALOGIQUES/NUMÉRIQUES
1Dispositifs ou systèmes pour la commande de l'intensité, de la couleur, de la phase, de la polarisation ou de la direction de la lumière arrivant d'une source lumineuse indépendante, p.ex. commutation, ouverture de porte ou modulation; Optique non linéaire
01pour la commande de l'intensité, de la phase, de la polarisation ou de la couleur
13basés sur des cristaux liquides, p.ex. cellules d'affichage individuelles à cristaux liquides
133Dispositions relatives à la structure; Excitation de cellules à cristaux liquides; Dispositions relatives aux circuits
1333Dispositions relatives à la structure
1334basées sur des cristaux liquides dispersés dans un polymère, p.ex. cristaux liquides micro-encapsulés
CPC
C09K 2019/546
CCHEMISTRY; METALLURGY
09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
KMATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
19Liquid crystal materials
52characterised by components which are not liquid crystals, e.g. additives ; with special physical aspect: solvents, solid particles
54Additives having no specific mesophase ; characterised by their chemical composition
542Macromolecular compounds
546creating a polymeric network
C09K 19/544
CCHEMISTRY; METALLURGY
09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
KMATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
19Liquid crystal materials
52characterised by components which are not liquid crystals, e.g. additives ; with special physical aspect: solvents, solid particles
54Additives having no specific mesophase ; characterised by their chemical composition
542Macromolecular compounds
544as dispersing or encapsulating medium around the liquid crystal
G02F 1/1334
GPHYSICS
02OPTICS
FDEVICES OR ARRANGEMENTS, THE OPTICAL OPERATION OF WHICH IS MODIFIED BY CHANGING THE OPTICAL PROPERTIES OF THE MEDIUM OF THE DEVICES OR ARRANGEMENTS FOR THE CONTROL OF THE INTENSITY, COLOUR, PHASE, POLARISATION OR DIRECTION OF LIGHT, e.g. SWITCHING, GATING, MODULATING OR DEMODULATING; TECHNIQUES OR PROCEDURES FOR THE OPERATION THEREOF; FREQUENCY-CHANGING; NON-LINEAR OPTICS; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
1Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating, or modulating; Non-linear optics
01for the control of the intensity, phase, polarisation or colour 
13based on liquid crystals, e.g. single liquid crystal display cells
133Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
1333Constructional arrangements; ; Manufacturing methods
1334based on polymer dispersed liquid crystals, e.g. microencapsulated liquid crystals
Déposants Lawrence Livermore National Security, LLC
Inventeurs Caitlyn C. Cook
Elaine Lee
Titre
(EN) MATRIX FORMULATION FOR POLYMER DISPERSED LIQUID CRYSTAL DISPLAYS IN LOW POWER DIRECT CURRENT (DC) ELECTROMAGNETIC FIELD APPLICATION
Abrégé
(EN)

According to one aspect of an inventive concept, a pre-polymer matrix formulation for a polymer dispersed liquid crystal (PDLC) display includes a monofunctional monomer, a trifunctional oligomer, and a trifunctional monomer. According to another aspect of an inventive concept, a product includes a PDLC display formulation comprising a polymer matrix having a plurality of liquid crystal (LC) domains dispersed therein, wherein the polymer matrix comprises a polymerized product of a monofunctional monomer, a trifunctional oligomer, and a trifunctional monomer, and a pair of electrodes having the PDLC display formulation positioned therebetween. The PDLC display formulation is characterized as having a substantially constant optical transparency during application of a low power direct current (DC) electromagnetic field between the electrodes for a predefined duration of time.

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