Ultra-thin broadband retardation film
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United States of America
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Jul 13, 2017
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Jul 13, 2017
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Abstract
An ultra-thin broadband retardation film is provided. The broadband retardation film includes a first retardation film and a second retardation film. The second retardation film is disposed on a side of the first retardation film, wherein an in-plane retardation value Ro of the first retardation film is between 70 nm and 130 nm, an in-plane retardation value Ro of the second retardation film is between 140 nm and 260 nm, and an angle between an optic axis of the first retardation film and an optic axis of the second retardation film is between 35° and 70°.
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