Optical film, method of manufacturing optical film and liquid crystal display device having the same
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United States of America Patent
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Mar 25, 2014
Grant Date -
May 15, 2008
app pub date -
May 2, 2007
filing date -
Nov 10, 2006
priority date (Note) -
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Abstract
An optical film includes a multi-layer sheet including: a plurality of polyethylene terephthalate polymer layers, the polymer layers having a first refraction index in a first direction parallel to a plane of the polymer layers and a second refraction index in a second direction parallel to the plane of the polymer layers, and a plurality of polyethylene terephthalate copolymer layers, the copolymer layers having a third refraction index in the first and second directions, a protection sheet on at least one side of the multi-layer sheet, and an adhesive member between the multi-layer sheet and the protection sheet.
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