LIGHT EXTRACTION FILM WITH NANOPARTICLE COATINGS

LIGHT EXTRACTION FILM WITH NANOPARTICLE COATINGS

A multifunctional optical film for enhancing light extraction includes a flexible substrate, a structured layer having nanoparticles of different sizes, and a backfill layer. The structured layer effectively uses microreplicated diffractive or scattering nanostructures located near enough to the lig...

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Bibliographische Detailangaben
Hauptverfasser: ZHANG, JUN-YING, LAMANSKY, SERGEY A, SMITH, TERRY L, KOLB, WILLIAM BLAKE, NELSON, BRIAN K, KOLB, BRANT U, PATNAUDE, CHERYL A, BARAN, JIMMIE R., JR, SCHULTZ, WILLIAM, J, JING, NAIYONG
Format: Patent
Sprache:eng ; fre ; ger
Schlagworte:
BASIC ELECTRIC ELEMENTS
ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR
ELECTRICITY
MANUFACTURE OR TREATMENT OF NANOSTRUCTURES
MEASUREMENT OR ANALYSIS OF NANOSTRUCTURES
NANOTECHNOLOGY
OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
OPTICS
PERFORMING OPERATIONS
PHYSICS
SEMICONDUCTOR DEVICES
SPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES
TRANSPORTING
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Beschreibung
Zusammenfassung:A multifunctional optical film for enhancing light extraction includes a flexible substrate, a structured layer having nanoparticles of different sizes, and a backfill layer. The structured layer effectively uses microreplicated diffractive or scattering nanostructures located near enough to the light generation region to enable extraction of an evanescent wave from an organic light emitting diode (OLED) device. The backfill layer has a material having an index of refraction different from the index of refraction of the structured layer. The backfill layer also provides a planarizing layer over the structured layer in order to conform the light extraction film to a layer of an OLED display device. The film may have additional layers added to or incorporated within it to an emissive surface in order to effect additional functionalities beyond improvement of light extraction efficiency.