Dupont Electronics, Inc.

Aref Samadidooki

Mark Allan Lamontia

Leopoldo Alejandro Carbajal

Mobin Yahyazadehfar

Kostantinos Kourtakis

Ross Stefan Johnson

Weiying Gao

Gene M Rossi

Heidi Elizabeth Burch

The present invention is directed to a cover window assembly comprising a multi-layer films of polymeric and inorganic materials for a variety of articles, and the related articles and methods. The cover window assembly exhibits high resistance to strain and impact damage for the articles including display devices, particularly flexible display devices.

Cover window assembly, related articles and methods

In a first aspect, a consolidated polymer film includes a first polymer layer having a first elastic modulus, wherein the first polymer layer comprises a non-melt-processible polymer comprising a polyimide, a poly(amide-imide), a block copolymer of a polyimide or a poly(amide-imide) or a mixture thereof, and a second polymer layer having a second elastic modulus, wherein the second polymer layer comprises a polyimide, a poly(amide-imide), a block copolymer of a polyimide or a poly(amide-imide) or a mixture thereof. A minor surface of the first polymer layer is in contact with a minor surface of the second polymer layer. The first elastic modulus is different from the second elastic modulus. The first and second polymer layers are bonded by consolidation.

Consolidated polymer film

In a first aspect, a multilayer polymer film includes a first polymer layer having a first elastic modulus and a second polymer layer having a second elastic modulus. The first polymer layer includes a polyimide, a polyamide imide, a block copolymer of a polyimide or a polyamide imide or a mixture thereof. The second polymer layer includes a polyimide, a polyamide imide, a block copolymer of a polyimide or a polyamide imide or a mixture thereof. The first elastic modulus is different from the second elastic modulus. The first and second polymer layers are bonded by consolidation. In a second aspect, a cover window for a display includes a hard coat layer and the multilayer polymer film of the first aspect. The first polymer layer of the multilayer polymer film is the layer farthest from the display and is adhered to the hard coat layer.

Multilayer polymer film

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Wilmington, DE, United States of America

Aref Samadidooki