Multilayer optical adhesives and methods of making same

US10647032B2 · kind B2 · utility

Assignee

• 3M INNOVATIVE PROPERTIES COMPANY · US

Inventors

• Marc D. Radcliffe · Woodbury, US
• Daniel W. Hennen · Cottage Grove, US
• Brett J. Sitter · Windom, US
• Michael L. Steiner · New Richmond, US
• Thomas R. Hoffend · Webster, US
• Audrey A. Sherman · Windom, US
• John J. Stradinger · Roseville, US
• Olester Benson, Jr. · Woodbury, US

Key dates

• Filing date: Oct 31, 2017
• Grant date: May 12, 2020
• Expiry date: Apr 4, 2038

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C09J2301/312
• WIPO field: Basic materials chemistry
• WIPO sector: Chemistry

Abstract

A multilayer optical adhesive including a first viscoelastic or elastomeric adhesive layer and a second viscoelastic or elastomeric adhesive layer. A crosslinked or soluble resin layer may be disposed between the first viscoelastic or elastomeric adhesive layer and the second viscoelastic or elastomeric adhesive layer or the first viscoelastic or elastomeric adhesive layer may be immediately adjacent to the second viscoelastic or elastomeric adhesive layer. An interface between immediately adjacent layers is structured and there is a difference in refractive indices across the interface.