Diffuser for flat panel display
First Claim
1. A light diffusing film for a back light display comprising:
- a unitary film consisting essentially of polycarbonate and a uniformly dispersed anti-static material in an amount sufficient to impart anti-static properties to the film, wherein said film additionally comprising a uniformly dispersed acrylic bulk scattering additive for the high scattering of light having a haze of greater than 80%.
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Accused Products
Abstract
A light diffusing film for a back light display is described. The light diffusing film includes a unitary film consisting essentially of polycarbonate and a uniformly dispersed anti-static material in an amount sufficient to impart anti-static properties to the film. The anti-static material may comprise a fluorinated phosphonium sulfonate. The film may additionally include at least one textured surface for the low scattering of light. Alternatively, the film may additionally include a uniformly dispersed acrylic bulk scattering additive of particles having a mean particle size of from about 3 to about 10 microns and present in an amount from about 2 to about 7 percent by weight percent for the high scattering of light.
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Citations
77 Claims
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1. A light diffusing film for a back light display comprising:
a unitary film consisting essentially of polycarbonate and a uniformly dispersed anti-static material in an amount sufficient to impart anti-static properties to the film, wherein said film additionally comprising a uniformly dispersed acrylic bulk scattering additive for the high scattering of light having a haze of greater than 80%. - View Dependent Claims (2, 3, 6, 7, 8, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 72, 73, 74, 75, 76, 77)
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4. A light diffusing film for a back light display comprising:
a unitary film consisting essentially of polycarbonate and a uniformly dispersed anti-static material in an amount sufficient to impart anti-static properties to the film, wherein the film comprises at least one textured surface comprises a random matte textured surface. - View Dependent Claims (5)
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9. A light diffusing film for a back light display comprising:
a unitary film consisting essentially of polycarbonate and a uniformly dispersed anti-static material in an amount sufficient to impart anti-static properties to the film, wherein said film additionally comprising at least one textured surface for the low scattering of light.
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10. A light diffusing film for a back light display comprising:
a unitary film consisting essentially of polycarbonate and a uniformly dispersed anti-static material in an amount sufficient to impart anti-static properties to the film, and an ultraviolet absorber (UVA) component in an effective amount to reduce discoloration of the film when exposed to ultraviolet (UV) light. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23)
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24. A light diffusing film for a back light display comprising:
a unitary film consisting essentially of polycarbonate and a uniformly dispersed anti-static material in an amount sufficient to impart anti-static properties to the film, wherein the film has a retardation value of less than about 100 nm. - View Dependent Claims (25, 26)
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27. A light diffusing film for a back light display comprising:
a unitary film consisting essentially of polycarbonate and a uniformly dispersed anti-static material in an amount sufficient to impart anti-static properties to the film, wherein the film has less than 4 point defects between 0.10 and 0.15 mm nominal diameter per 10 square foot inspection area.
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28. A light diffusing film for a back light display comprising:
a unitary film consisting essentially of polycarbonate and a uniformly dispersed anti-static material in an amount sufficient to impart anti-static properties to the film, wherein the film has less than 4 black spot point defects larger than 0.15 mm nominal diameter per 40 square foot inspection area.
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29. A light diffusing film for a back light display comprising:
a unitary film consisting essentially of polycarbonate and a uniformly dispersed anti-static material in an amount sufficient to impart anti-static properties to the film, wherein the film has a protective masking film laminated to the surface with a peel test capability of between 0.17 and 1.06 oz/in.
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30. An assembly for an optical film comprising:
a light diffusing film for a back light display comprising a unitary film consisting essentially of polycarbonate and a uniformly dispersed anti-static material in an amount sufficient to impart anti-static properties to the film; a backing film; and a pressure sensitive adhesive adhering the backing film to the light diffusion film. - View Dependent Claims (31, 32, 33)
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52. A light diffusing film for a back light display comprising:
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a unitary film consisting essentially of polycarbonate and a uniformly dispersed anti-static material comprising a fluorinated phosphonium sulfonate in an amount sufficient to impart anti-static properties to the film, said film additionally comprising at least one textured surface for the low scattering of light, or said film additionally comprising a uniformly dispersed acrylic bulk scattering additive of particles having a mean particle size of from about 3 to about 10 microns and present in an amount from about 2 to about 7 percent by weight percent for the high scattering of light. - View Dependent Claims (53, 54, 55, 56, 57, 58, 59)
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60. A backlight display device comprising:
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an optical source for generating light; a light guide for guiding the light therealong; a unitary film consisting essentially of polycarbonate and a uniformly dispersed anti-static material in an amount sufficient to impart anti-static properties to the film, wherein said film additionally comprising a uniformly dispersed acrylic bulk scattering additive for the high scattering of light having a haze of greater than 80%. - View Dependent Claims (61, 62, 63, 64, 65, 66)
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67. A backlight display device comprising:
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an optical source for generating light; a light guide for guiding the light therealong; a unitary film consisting essentially of polycarbonate and a uniformly dispersed anti-static material comprising a fluorinated phosphonium sulfonate in an amount sufficient to impart anti-static properties to the film, said film additionally comprising at least one textured surface for the low scattering of light, or said film additionally comprising a uniformly dispersed acrylic bulk scattering additive of particles having a particle size of from about 3 to about 10 microns in an amount from about 2 to about 7 percent by weight percent for the high scattering of light. - View Dependent Claims (68, 69, 70, 71)
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Specification