Structured Composite Optical Films
First Claim
1. An optical film, comprising:
- a first layer comprising inorganic fibers embedded within a polymer matrix, the first layer having a first structured surface, wherein light that propagates substantially perpendicularly through the first layer is subject to a bulk haze of less than 30%.
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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. The first layer has a structured surface to provide an optical function to light passing therethrough. 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.
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Citations
41 Claims
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1. An optical film, comprising:
a first layer comprising inorganic fibers embedded within a polymer matrix, the first layer having a first structured surface, wherein light that propagates substantially perpendicularly through the first layer is subject to a bulk haze of less than 30%. - 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, 27, 28, 29)
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30. A display system, comprising:
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a display panel;
a backlight; and
a reinforced film having a first structured surface, the reinforced film being positioned between the display panel and the backlight, the reinforced film comprising inorganic fibers embedded within a polymer matrix, wherein light that propagates substantially perpendicularly through the reinforced film is subject to a bulk haze of less than 30%. - View Dependent Claims (31, 32, 33, 34, 35, 36)
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37. A method of manufacturing an optical film, comprising:
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providing a molding tool having a structured surface;
providing a fiber reinforced layer comprising inorganic fibers embedded within a matrix formed of at least one of a polymer and a monomer; and
continuously molding the fiber reinforced layer against the molding tool to produce a fiber reinforced, structured surface sheet. - View Dependent Claims (38, 39, 40, 41)
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Specification