抄録
The boundary layer display (BLD) with nematic liquid crystals was proposed by J. Cheng et al. in 1982. When a dc voltage is applied, boundary layer moves to one surface layer or the other, depending on the polarity of the dc voltage. J. Cheng et al. came to conclusion that the polarity of the torque in cells were due to ions. However, we assumed that this polarity is unduced by flexoelectric effects in nematics, which is dominant over the effect of ions. Then, numerical simulations were carried out by continuum theory with flexoelectric effects.
