Abstract
Perception of visible defects induced by local cell gap variations in
liquid crystal display (LCD) panels is studied as a function of the viewing
direction and applied voltage. Our results are reported in terms of the LCD
sensitivity parameter Κ defined in our previous publication and can be readily used in
conjunction with the psycho-physical models of Mura perception. We apply our
methods to a particular example of a normally white TN LCD and show that the
Mura visibility depends strongly on the viewing angle as well as the applied
voltage. We conclude that a complete study of the Κ-parameter as a function of the
viewing angle and applied voltage is crucial in the correct assessment of
the sensitivity of an LCD panel to cell gap variation.
© 2011 IEEE
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