Microlens array sheet for a liquid crystal display, method for attaching the same and liquid crystal display equipped with the same
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United States of America Patent
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Sep 10, 1996
Grant Date -
N/A
app pub date -
Aug 24, 1994
filing date -
Aug 30, 1993
priority date (Note) -
In Force
status (Latency Note)
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Abstract
Disclosed is a microlens array sheet for a liquid crystal display including a first substance layer and a second substance layer having a refractive index less than that of the first substance layer. A plurality of minute unit lenses are formed by providing concaves and/or convexes to an interface between the first and second substance layers. When a ray having entered into the sheet from the normal-line direction of the second substance layer exits from the surface of the first substance layer, an refractive angle relative to the normal line of the surface of first substance layer is not less than 30 degrees. When this microlens array sheet is attached to the surface of a liquid crystal cell of a liquid crystal display, an improved large angle of visibility can be obtained.
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