OPTICAL FILM MATERIAL ROLL AND METHOD FOR MANUFACTURING IMAGE DISPLAY DEVICE USING THEREOF
First Claim
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.
1 Assignment
0 Petitions
Accused Products
Abstract
Disclosed is a material roll that includes a roll of an optical film having defect information markings printed thereon and is resistant to the formation of a defect by the transfer of a bump/dent deformation at the marking site. The material roll includes a long sheet of an optical film with polarizer wound into roll shape; and marking(s) formed at or in a vicinity of at least one defect site. The marking has an optical density of 1.5 or more, and a thickness of a center part of the marking is 1.5 μm or less. The marking preferably has an optical density per unit thickness of 2.5 μm−1 or more.
15 Citations
4 Claims
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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, wherein
at 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, and a thickness of a center part of the marking is 1.5 μ - m or less.
- View Dependent Claims (2, 3, 4)
Specification