Abstract
Proposed herein is a single-panel liquid crystal device that is switchable between the transmissive and reflective modes without subpixel division. Dye-doped liquid crystals were used to eliminate the image inversion caused by a reflective polarizer. The splay and π-twist states of the bistable chiral splay nematic mode, which has two stable states, were employed for a good dark state in both the transmissive and reflective modes. Operation in the transmissive mode can be achieved by applying an in-plane field, whereas a vertical field is applied for operation in the reflective mode. It is expected that the proposed device can be used as a highly efficient transflective device for outdoor as well as indoor environments.
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