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Brightness enhancing film and display device having the same

  • US 7,586,566 B2
  • Filed: 05/16/2006
  • Issued: 09/08/2009
  • Est. Priority Date: 06/03/2005
  • Status: Active Grant
First Claim
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1. A brightness enhancing film suitable for use in a display device, the film comprising:

  • a first polymeric layer having a microstructured surface, wherein the microstructured surface comprises an array of prism elements, anda second polymeric layer disposed adjacent to the first polymeric layer on the opposite side of the microstructured surface,wherein at least one of the first and second polymeric layers comprises a UV absorber that absorbs UV light and transmits visible light, such that the brightness enhancing film has an internal percent transmission of at least 95% at 410 nm, and at most 25% at 380 nm.

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