Abstract
We have developed a “controllable-viewing-angle (CVA)” device consisting of a hybrid aligned nematic (HAN) liquid-crystal (LC) cell and an negative C-plate. The CVA device can control the transmission of light at predetermined azimuth angles and at the polar angles without changing the transmission of light in the normal direction. By arranging the CVA device on top of a LC panel, we have realized a simple controllable-viewing-angle display. In particular, the CVA device using a HAN LC cell realizes a stronger light-shielding effect and better control over a wider range of viewing angles than possible with a homogeneous aligned LC cell.
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