Optical diffusing film laminate and method of making
Assignee3M Innovative Properties Company
InventorsQingbing Wang, Encai Hao, Tri D. Pham, Daniel J. Theis, Matthew S. Stay
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Abstract
An optical film assembly comprising a first optical film, a coupling member, and a second optical film wherein the first optical film comprises a prismatic film, the second optical film comprises a diffuser, wherein the coupling member is bonded to the first optical film and to the second optical film such that the first optical film and second optical film are physically coupled, and the coupling member is bonded to at least one of the first optical film and the second optical film non-continuously such that an optically effective air gap is provided. Also, a method for making such optical film assemblies.
Claims22
An optical film assembly comprising a first optical film, a coupling member, and a second optical film wherein:
- the first optical film comprises a prismatic film and has a first major face from which a plurality of optical elements protrude and an opposing second major face;
- the second optical film comprises a diffuser and has a first major face and an opposing second major face, wherein the first major face of the second optical film comprises a ULI coating;
- and
- the coupling member is bonded to the second major face of the first optical film and to the first major face of the second optical film such that the first optical film and second optical film are physically coupled;
- and
- wherein the coupling member is bonded to at least one of the first optical film and the second optical film non-continuously such that an optically effective air gap is provided.
Dependencies are inferred from the claim text.