Abstract
The effects of pretilt angle on electro-optical properties of
optically compensated bend liquid crystal cells with a mixed polyimide
alignment layer are investigated. By adjusting the mixed polyimide
concentration, several kinds of alignment layers are produced, and
a wide range of pretilt angles
$(2^{\circ}-66^{\circ})$
are achieved.
Differing from the conventional addresses, the maximum-light-transmittance
voltage, obtained from the transmittance–voltage curve of the
cell undergoing the reverse measurement, is employed, making a
$\sim 14\%$
enhancement in the output transmittance. Compared to the 0-wt% cell,
the 0.6-wt% cell with 16
$^{\circ}$
pretilt angle achieves
$\sim 38\%$
and
$\sim 50\%$
improvement in the rising-time and falling-time response,
respectively.
© 2015 IEEE
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