METHOD OF MANUFACTURING A NANO-LAYERED LIGHT GUIDE PLATE
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United States of America Patent
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Issued Date -
Oct 24, 2013
app pub date -
Apr 18, 2012
filing date -
Apr 18, 2012
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Abstract
The present invention provides a method of manufacturing a nano-layered light guide plate comprising, forming by a coextrusion method a multi-layered molten sheet comprising a plurality of two or more different alternating material layers and casting the coextruded sheet into a nip between a pressure roller and a pattern roller to form a nano-layered sheet having a discrete micro-pattern on at least one principal surface thereof. In addition, the invention further provides cutting and finishing the extruded micro-patterned sheet to form the nano-layered light guide plate, comprising a plurality of two or more different alternating material layers, with each layer having a thickness of less than a quarter wavelength of visible light.
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