Multifunction light redirecting films
AssigneeSKC Haas Display Films Co., Ltd.
InventorsThomas M. Laney, Michael R. Landry, Herong Lei
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Abstract
The present invention provides a multifunction light redirecting film for a liquid crystal display comprising at least one base thermoplastic polymer optical layer having a top surface with a plurality of optical features. The film further provides at least one co-extrudable surface thermoplastic polymer optical layer adjacent the base thermoplastic polymer optical layer, wherein the at least one co-extrudable surface has a pencil hardness of at least 1 H.
Claims10
A multifunction light redirecting film for a liquid crystal display comprising:
- at least one base thermoplastic polymer optical layer having a top surface with a plurality of optical features;
- at least one co-extrudable surface thermoplastic polymer optical layer adjacent the base thermoplastic polymer optical layer, wherein the at least one co-extrudable surface has a pencil hardness of at least 1 H.
A multifunction light redirecting film for a liquid crystal display comprising:
- a polymeric optical core layer having a top side and a bottom side;
- a top base thermoplastic polymer optical layer on the top side of the core layer;
- a bottom base thermoplastic polymer optical layer on the bottom side of the core layer;
- a light redirecting layer for substantially collimating visible light on the top base layer;
- and
- wherein the core layer and the base layers comprise materials having a glass transition temperature (Tg) that is greater than approximately 70° C.
The multifunction light redirecting film as recited in claim 5, wherein the core layer has a thickness of approximately 115 μm and a modulus of elasticity of approximately 5.0 GPa.
The multifunction light redirecting film as recited in claim 5, further comprising at least one surface layer on the bottom base layer with a pencil hardness of at least 1 H.
Dependencies are inferred from the claim text.