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US 2005/0237641 A1Published application
Brightness enhancement film having curved prism units
AssigneeEfun Technology Co., Ltd.
InventorShih-Chieh Tang
Life of this patent
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Abstract
A brightness enhancement film includes a substrate and a plurality of curved prism units. The curved prism units are extended in parallel and mounted to a surface of the substrate. Each of the curved prism units includes at least one meandering surface to provide with changes in curvature. Thus, the meandering surface of the curved prism unit is able to refract incident light in two dimensions with respect to the substrate that may enhance entire refractive efficiency in two dimensions.
Claims15
A brightness enhancement film having curved prism units, comprising:
- a substrate including a first surface and a second surface, and transmitting light between the first surface and the second surface;
- and
- a plurality of curved prism units juxtaposed on the first surface of the substrate, each of the curved prism units having a longitudinal direction and including at least one meandering surface extending and meandering with respect to the longitudinal direction to provide changes in curvature that are able to refract light in two dimensions, wherein a direction of said meandering surface relative to said longitudinal direction varies along a length of each of said prism units.
Dependencies are inferred from the claim text.