YE Wen-jiang, LIU Xiao-song, SONG Xiao-long, ZHENG Gui-li. Influence of anchoring property of substrate on capacitance of liquid crystal cell[J]. , 2014,29(5): 686-691
YE Wen-jiang, LIU Xiao-song, SONG Xiao-long, ZHENG Gui-li. Influence of anchoring property of substrate on capacitance of liquid crystal cell[J]. , 2014,29(5): 686-691 DOI: 10.3788/YJYXS20142905.0686.
Influence of anchoring property of substrate on capacitance of liquid crystal cell
including the anchoring energy and the anchoring easy directon
can affect the distribution of liquid crystal director
which results in the capacitance change of liquid crystal cell
so the anchoring property may be determined by measuring the capacitance of liquid crystal cell. Based on liquid crystal elasticity theory and variational principles
the equilibrium equation and the boundary condition of weak anchoring parallel aligned nematic (PAN) and hybrid aligned nematic (HAN) liquid crystal cell are deduced theoretically. The variations of reduced capacitance of liquid crystal cell with applied voltage
anchoring energy coefficient and anchoring easy direction are simulated using the finite difference iterative method. The results show that the capacitance of liquid crystal cell will decrease with increase of the anchoring energy coefficient;the variation of capacitance of liquid crystal cell with the anchoring energy coefficient will reduce with the increase of pretilt angle;the capacitance of PAN cell is not greater than that of HAN cell for the same voltage and anchoring energy coefficient of substrate.
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