Method of making multilayer optical film comprising layer-by-layer self-assembled layers and articles
First Claim
1. A method of making a multilayer optical film comprising:
- providing a multilayer optical film comprising a plurality of alternating polymeric layers of a low refractive index layer and a high refractive index layer, wherein the high refractive index layer comprises a birefringent thermoplastic polymer and the plurality of alternating polymeric layers reflect at least one bandwidth of electromagnetic radiation ranging from ultraviolet to near infrared;
disposing onto the multilayer optical film a plurality of layers deposited by layer-by-layer self-assembly of nanoparticles, polymers, or a combination thereof,wherein the plurality of layers deposited by layer-by-layer self-assembly comprise alternating stacks of low refractive index bi-layers and high refractive index bi-layers, wherein the plurality of bi-layers reflect at least one bandwidth of electromagnetic radiation ranging from ultraviolet to near infrared, wherein the plurality of bi-layers reflect at least a portion of the same bandwidth of electromagnetic radiation as the multilayer optical film, and wherein the plurality of bi-layers reflect at least a portion of a different bandwidth of electromagnetic radiation as the multilayer optical film.
1 Assignment
0 Petitions
Accused Products
Abstract
Methods of making a multilayer optical film are described. In one embodiment, the method comprises providing a multilayer optical film and disposing onto the multilayer optical film a plurality of layers deposited by layer-by-layer self-assembly of nanoparticles, polymers, and combinations thereof. The multilayer optical film typically comprises a plurality of alternating polymeric layers of a low refractive index layer and a high refractive index layer that reflects at least one bandwidth of electromagnetic radiation ranging from ultraviolet to near infrared. Multilayer optical film articles are described comprising a plurality of layers disposed onto the multilayer optical film, wherein the plurality of layers comprises layer-by-layer self-assembled nanoparticles, polymers, and combinations thereof. The multilayer optical films are suitable for various uses including reflective polarizers for optical displays such as LCDs or LEDs, architectural film applications, window film applications, and solar power concentrating mirrors.
-
Citations
22 Claims
-
1. A method of making a multilayer optical film comprising:
-
providing a multilayer optical film comprising a plurality of alternating polymeric layers of a low refractive index layer and a high refractive index layer, wherein the high refractive index layer comprises a birefringent thermoplastic polymer and the plurality of alternating polymeric layers reflect at least one bandwidth of electromagnetic radiation ranging from ultraviolet to near infrared; disposing onto the multilayer optical film a plurality of layers deposited by layer-by-layer self-assembly of nanoparticles, polymers, or a combination thereof, wherein the plurality of layers deposited by layer-by-layer self-assembly comprise alternating stacks of low refractive index bi-layers and high refractive index bi-layers, wherein the plurality of bi-layers reflect at least one bandwidth of electromagnetic radiation ranging from ultraviolet to near infrared, wherein the plurality of bi-layers reflect at least a portion of the same bandwidth of electromagnetic radiation as the multilayer optical film, and wherein the plurality of bi-layers reflect at least a portion of a different bandwidth of electromagnetic radiation as the multilayer optical film. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 20, 21)
-
-
17. An optical film comprising:
-
a multilayer optical film comprising a plurality of alternating polymeric layers of a low refractive index layer and a high refractive index layer, wherein the high refractive index layer comprises a birefringent thermoplastic polymer and the plurality of alternating polymeric materials reflects at least one bandwidth of electromagnetic radiation ranging from ultraviolet to near infrared; and a plurality of layers disposed onto the multilayer optical film, wherein the plurality of layers comprises layer-by-layer self-assembled nanoparticles, polymers, or a combination thereof, wherein the multilayer optical film comprises polyethylenenaphthalate and the plurality of layers deposited by layer-by-layer self-assembly prevent the polyethylenenaphthalate from degrading from exposure to blue light having a wavelength in a range of 400 to 490 nm. - View Dependent Claims (18, 19)
-
-
22. An optical film comprising:
-
a multilayer optical film comprising a plurality of alternating polymeric layers of a low refractive index layer and a high refractive index layer, wherein the high refractive index layer comprises a birefringent thermoplastic polymer and the plurality of alternating polymeric materials reflects at least one bandwidth of electromagnetic radiation ranging from ultraviolet to near infrared; and
a plurality of layers disposed onto the multilayer optical film, wherein the plurality of layers comprises layer-by-layer self-assembled nanoparticles, polymers, or a combination thereof,wherein the plurality of layers comprise alternating stacks of low refractive index bi-layers and high refractive index bi-layers, wherein the plurality of bi-layers reflect at least one bandwidth of electromagnetic radiation ranging from ultraviolet to near infrared, wherein the plurality of bi-layers reflect at least a portion of the same bandwidth of electromagnetic radiation as the multilayer optical film, and wherein the plurality of bi-layers reflect at least a portion of a different bandwidth of electromagnetic radiation as the multilayer optical film.
-
Specification