Blunt tip prism film and methods for making the same
OwnerVicki Herzl Watkins, Dennis Joseph Coyle +3inventors
InventorsVicki Herzl Watkins, Dennis Joseph Coyle, Eugene George Olczak, Scott Michael Miller, Nitin Garg
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Abstract
In one embodiment, a film can comprise a transparent substrate comprising a plurality of prism structures, wherein the prism structures have a blunt tip having a tip length of 250 nm to 2,000 nm. The film can be used in various applications, such as back light displays. In one embodiment, a method for forming a master for a film can comprise ion beam etching a diamond tip to form a blunt tip having a tip length of 250 nm to 2,000 nm, and forming negatives of prism structures into a master using the diamond tip.
Claims19
A film, comprising:
- a transparent substrate comprising a plurality of prism structures, wherein the prism structures have a blunt tip having a tip length of 250 nm to 2,000 nm.
A film, comprising:
- a transparent substrate comprising a plurality of prism structures, wherein the prism structures have a blunt tip having a tip length of 250 nm to 2,000 nm;
- wherein the film has a relative abrasion damage of less than 30%, as compared to the same composition film with the same characteristic except without blunt prism tips, and determined in accordance with Equation 2;
- and
- wherein a luminance of the film is reduced less than or equal to 5% as compared to a luminance of an equivalent film with sharp prism tips.
A method for forming a master for a film, comprising:
- ion beam etching a diamond tip to form a blunt tip having a tip length of 250 nm to 2,000 nm;
- and
- forming negatives of prism structures into a master using the diamond tip.
Dependencies are inferred from the claim text.