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OPTICAL FILM MATERIAL ROLL AND METHOD FOR MANUFACTURING IMAGE DISPLAY DEVICE USING THEREOF

  • US 20110143056A1
  • Filed: 04/01/2010
  • Published: 06/16/2011
  • Est. Priority Date: 04/10/2009
  • Status: Active Grant
First Claim
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1. A material roll, comprising a long sheet of an optical film wound into roll shape, the optical film comprising a polarizer, whereinat least one marking is formed at or in a vicinity of at least one defect site of the optical film,the marking has an optical density of 1.5 or more, anda thickness of a center part of the marking is 1.5 μ

  • m or less.

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