Light control film
Assignee3M Innovative Properties Company
InventorsGary E. Gaides, Nicholas A. Johnson, Stephen A. O. Olson
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Abstract
A light control film includes a microstructured layer including a plurality of microstructures defining a plurality of grooves therebetween. The light control film further includes a light absorbing material disposed in each of the plurality of grooves. The light absorbing material includes a plurality of first particles. Each first particle includes a polymeric bead including an outer surface. Each first particle further includes an outer layer disposed on the outer surface of the polymeric bead. The outer layer of the first particle includes a metal compound.
Claims21
A light control film comprising:
- a microstructured layer comprising a plurality of microstructures defining a plurality of grooves therebetween;
- and
- a light absorbing material disposed in each of the plurality of grooves, the light absorbing material comprising a plurality of first particles, wherein each first particle comprises:
- a polymeric bead comprising an outer surface;
- and
- an outer layer disposed on the outer surface of the polymeric bead, wherein the outer layer comprises a metal compound.
8-11. (canceled)
A method of manufacturing a light control film, the method comprising:
- providing a plurality of polymeric beads, wherein each polymeric bead comprises an outer surface;
- forming a plurality of first particles by vapor depositing a metal on the outer surfaces of the plurality of polymeric beads, wherein each first particle comprises an outer layer of a metal compound disposed on the outer surface of the corresponding polymeric bead;
- and
- forming a light absorbing material by mixing the plurality of first particles with a binder.
Dependencies are inferred from the claim text.