Open AccessOptical film to enhance cosmetic appearance and brightness in liquid crystal displays
Author(s) -
Junwon Lee,
Stephen C. Meissner,
Ronald J. Sudol
Publication year - 2007
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.15.008609
Subject(s) - brightness , liquid crystal display , optics , materials science , collimated light , optoelectronics , optical microscope , liquid crystal , scanning electron microscope , laser , physics
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.