Optical adhesive with diffusive properties
Assignee3M Innovative Properties Company
InventorsKevin R. Schaffer, Audrey A. Sherman, Ryan E. Marx, James M. Nelson
Life of this patent
Estimating the term…
Abstract
Optical adhesives that also diffuse visible light include a blend of an adhesive matrix which is an optical adhesive and a block copolymer. The adhesive may be a pressure sensitive adhesive and contains either acid or basic functionality. The block copolymer, which may be a diblock copolymer, contains a high Tg block and a functional block, the functionality of the functional block is complimentary to the functionality of the adhesive matrix to form an acid-base interaction. The adhesive may also contain a crosslinking agent.
Claims10
An optical article comprising:
- an optical film;
- and
- a diffusive adhesive at least partially coated on the optical film, wherein the diffusive adhesive comprises an optically clear pressure sensitive adhesive matrix;
- and
- a block copolymer dispersed within the adhesive matrix, wherein the adhesive comprises phase-separated microdomains that are not particles and are larger than 1.0 micrometers.
An optical laminate comprising:
- a substrate;
- and
- an optical article laminated to the substrate, wherein the optical article
- comprises:
- an optical film;
- and
- a diffusive adhesive at least partially coated on the optical film, wherein the diffusive adhesive comprises an optically clear pressure sensitive adhesive matrix;
- and a block copolymer dispersed within the adhesive matrix, wherein the adhesive comprises phase-separated microdomains that are not particles and are larger than 1.0 micrometers.
Dependencies are inferred from the claim text.