Reinforced Optical Films
First Claim
1. An optical film, comprising:
- a first layer comprising inorganic fibers embedded within a polymer matrix; and
a second layer attached to the first layer, the second layer having a structured surface, wherein the optical film provides a brightness gain of at least 10% to light that propagates through the optical film.
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Accused Products
Abstract
Optical films having structured surfaces are used, inter alia, for managing the propagation of light within a display. As displays become larger, it becomes more important that the film be reinforced so as to maintain rigidity. An optical film of the invention has a first layer comprising inorganic fibers embedded within a polymer matrix. A second layer having a structured surface, for providing an optical function to light passing therethrough, is attached to the first layer. The film may have various beneficial optical properties, for example, light that propagates substantially perpendicularly through the first layer may be subject to no more than a certain level of haze or light incident on the film may be subject to a minimum value of brightness gain. Various methods of manufacturing the films are described.
110 Citations
50 Claims
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1. An optical film, comprising:
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a first layer comprising inorganic fibers embedded within a polymer matrix; and
a second layer attached to the first layer, the second layer having a structured surface, wherein the optical film provides a brightness gain of at least 10% to light that propagates through the optical film. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 49)
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27. An optical film, comprising:
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a first layer, comprising inorganic fibers embedded within a polymer matrix; and
a second layer attached to the first layer, the second layer having a structured surface wherein single pass transmission for light, substantially normally incident on a side of the optical film facing away from the structured surface, is less than 40%. - View Dependent Claims (28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 50)
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Specification