Brightness enhancement film
AssigneeNational Chung Hsing University
InventorsDong-Sing Wuu, Fang-Hsuan Su
Life of this patent
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Abstract
A brightness enhancement film adapted to be disposed on a light-exiting surface of a light-emitting module includes a substrate and a brightness enhancement structure. The substrate is light transmissive, is disposed on the light-exiting surface, and has a top surface away from the light-exiting surface. The brightness enhancement structure is disposed on the top surface of the substrate, and includes a plurality of prism portions, a plurality of pores distributed inside each of the plurality of prism portions, and a plurality of modified patterns formed downwardly from a surface of each of the plurality of prism portions.
Claims20
A brightness enhancement film adapted to be disposed on a light-exiting surface of a light-emitting module, comprising:
- a substrate that is light transmissive, that is disposed on said light-exiting surface, and that has a top surface away from said light-exiting surface;
- and
- a brightness enhancement structure that is disposed on said top surface of said substrate, and that includes a plurality of prism portions, a plurality of pores distributed inside each of said plurality of prism portions, and a plurality of modified patterns formed downwardly from a surface of each of said plurality of prism portions,
- wherein each of said plurality of modified patterns has multiple rings formed one around another, each with a diameter ranging from 1 μm to 10 μm.
A brightness enhancement film adapted to be disposed on a light-exiting surface of a light-emitting module, comprising:
- a substrate that is light transmissive, that is disposed on said light-exiting surface, and that has a top surface away from said light-exiting surface;
- and
- a brightness enhancement structure that is disposed on said top surface of said substrate, and that includes a plurality of prism portions, a plurality of pores distributed inside each of said plurality of prism portions, and a plurality of modified patterns formed downwardly from a surface of each of said plurality of prism portions,
- wherein a depth of each of said plurality of modified patterns from said surface of a respective one of said prism portions is no greater than 0.5 μm.
A brightness enhancement film adapted to be disposed on a light-exiting surface of a light-emitting module, comprising:
- a substrate that is light transmissive, that is disposed on said light-exiting surface, and that has a top surface away from said light-exiting surface;
- and
- a brightness enhancement structure that is disposed on said top surface of said substrate, and that includes a plurality of prism portions, a plurality of pores distributed inside each of said plurality of prism portions, and a plurality of modified patterns formed downwardly from a surface of each of said plurality of prism portions,
- wherein each of said plurality of pores is filled with air and has a refractive index of 1, each of said plurality of prism portions being made of a light-cured resin and having a refractive index that ranges from 1.45 to 1.7.
Dependencies are inferred from the claim text.