Optical film and liquid crystal display device using the film
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United States of America Patent
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Feb 4, 1997
Grant Date -
N/A
app pub date -
Sep 14, 1993
filing date -
Sep 16, 1992
priority date (Note) -
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Abstract
The liminance within the viewing angle of an LCD device is increased by using an optical film of transparent material. The film has a first surface having a wave structure including a plurality of isosceles triangle prisms arranged side-by-side, and a second surface having an optically rough structure for performing diffuse transmission. The film may also have a first surface having a structure including a plurality of quadrangular prisms arranged side-by-side, and a second surface having an optically rough structure for performing diffuse transmission.
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