The common feature of bistable liquid crystal displays (LCDs) is the existence of the two stable states without an
external field. In the bistable chiral splay nematic (BCSN) mode, the splay and π twist states are used for the two stable
states. The BCSN mode is a potential candidate of bistable modes, because it can be operated not only as a storage
device, but also as a monostable device with a fast response time in the same panel. The transition between two memory
states of the BCSN LCD is strongly coupled with the strength of applied electric fields. In this paper, we investigated the
bistable property by calculating the bistable curves and the correlation between the horizontal electric fields strength. To
realize the gray scale of BCSN LCD, We also propose a grid electrode structure with the varying-space between
electrodes which causes the varying strength of the horizontal electric fields. The selective transitions by the electrode
structure are demonstrated in this paper.
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