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1. (WO2010077521) LIGHT EXTRACTION FILM WITH NANOPARTICLE COATINGS
Latest bibliographic data on file with the International Bureau

Pub. No.: WO/2010/077521 International Application No.: PCT/US2009/066238
Publication Date: 08.07.2010 International Filing Date: 01.12.2009
IPC:
H01L 51/52 (2006.01) ,G02B 5/02 (2006.01)
H ELECTRICITY
01
BASIC ELECTRIC ELEMENTS
L
SEMICONDUCTOR DEVICES; ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR
51
Solid state devices using organic materials as the active part, or using a combination of organic materials with other materials as the active part; Processes or apparatus specially adapted for the manufacture or treatment of such devices, or of parts thereof
50
specially adapted for light emission, e.g. organic light emitting diodes (OLED) or polymer light emitting devices (PLED)
52
Details of devices
G PHYSICS
02
OPTICS
B
OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
5
Optical elements other than lenses
02
Diffusing elements; Afocal elements
Applicants:
3M INNOVATIVE PROPERTIES COMPANY [US/US]; 3M Center Post Office Box 33427 Saint Paul, Minnesota 55133-3427, US (AllExceptUS)
Inventors:
ZHANG, Jun-Ying; US
BARAN, Jimmie R., Jr.; US
SMITH, Terry L.; US
SCHULTZ, William, J.; US
KOLB, William Blake; US
PATNAUDE, Cheryl A.; US
LAMANSKY, Sergey A.; US
NELSON, Brian K.; US
JING, Naiyong; US
KOLB, Brant U.; US
Agent:
VIETZKE, Lance L.; 3M Center Office of Intellectual Property Counsel Post Office Box 33427 Saint Paul, Minnesota 55133-3427, US
Priority Data:
12/336,88917.12.2008US
Title (EN) LIGHT EXTRACTION FILM WITH NANOPARTICLE COATINGS
(FR) FILM D'EXTRACTION DE LUMIÈRE À REVÊTEMENTS NANOPARTICULAIRES
Abstract:
(EN) 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.
(FR) L'invention concerne un film optique multifonction destiné à améliorer l'extraction de la lumière, comprenant un substrat souple, une couche structurée dotée de nanoparticules de tailles différentes, et une couche de remplissage. La couche structurée utilise efficacement des nanostructures de diffraction ou de diffusion microrépliquées situées suffisamment proches d'une région de production de lumière pour permettre l'extraction d'une onde évanescente provenant d'un dispositif à diodes électroluminescentes organiques (OLED). La couche de remplissage comprend un matériau présentant un indice de réfraction différent de l'indice de réfraction de la couche structurée ; et une couche d'aplanissement disposée sur la couche structurée afin d'adapter le film d'extraction de lumière à une couche d'un dispositif d'affichage OLED. Le film peut également comprendre des couches supplémentaires ajoutées à une surface émissive ou incorporées dans cette dernière afin de mettre en œuvre des fonctionnalités supplémentaires au-delà de l'amélioration de l'efficacité d'extraction de lumière.
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Designated States: AE, AG, AL, AM, AO, AT, AU, AZ, BA, BB, BG, BH, BR, BW, BY, BZ, CA, CH, CL, CN, CO, CR, CU, CZ, DE, DK, DM, DO, DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, GT, HN, HR, HU, ID, IL, IN, IS, JP, KE, KG, KM, KN, KP, KR, KZ, LA, LC, LK, LR, LS, LT, LU, LY, MA, MD, ME, MG, MK, MN, MW, MX, MY, MZ, NA, NG, NI, NO, NZ, OM, PE, PG, PH, PL, PT, RO, RS, RU, SC, SD, SE, SG, SK, SL, SM, ST, SV, SY, TJ, TM, TN, TR, TT, TZ, UA, UG, US, UZ, VC, VN, ZA, ZM, ZW
African Regional Intellectual Property Organization (ARIPO) (BW, GH, GM, KE, LS, MW, MZ, NA, SD, SL, SZ, TZ, UG, ZM, ZW)
Eurasian Patent Organization (AM, AZ, BY, KG, KZ, MD, RU, TJ, TM)
European Patent Office (AT, BE, BG, CH, CY, CZ, DE, DK, EE, ES, FI, FR, GB, GR, HR, HU, IE, IS, IT, LT, LU, LV, MC, MK, MT, NL, NO, PL, PT, RO, SE, SI, SK, SM, TR)
African Intellectual Property Organization (BF, BJ, CF, CG, CI, CM, GA, GN, GQ, GW, ML, MR, NE, SN, TD, TG)
Publication Language: English (EN)
Filing Language: English (EN)
Also published as:
EP2371018SG171747JP2012512518KR1020110104037CN102272973IN4145/CHENP/2011