This paper presents an optical film that enhances cosmetic appearance as well as
brightness in a liquid crystal display (LCD) through microprisms that have a
variable pitch. The optical film utilizes Fourier transformation to optimize the
arrangement of microprisms for improving the cosmetic appearance in the display.
The optical film has an improved light-collimating feature that redirects light
more effectively, resulting in higher brightness. This paper shows details of
the design procedure, but more importantly, presents optical measurement results
of an actual optical film prototype to confirm the performance improvement.
© 2007 Optical Society of America
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