PURPOSE: To stabilize an orientation of a liquid crystal molecule between the upper and the lower substrates, and to improve the characteristic of a memory by arranging a dipole of a ferroelectric liquid crystal molecule in the vicinity of both the substrates, in a stable direction against a dipole of the substrate.
CONSTITUTION: Transparent substrates 31, 32 on which an electrode and an oriented film such as a polyimide film, etc., have been formed are opposed and placed, and between them, a ferroelectric liquid crystal, a smectic liquid crystal desirably is injected. This liquid crystal molecule 33 is brought to uniaxial parallel orientation, and between one substrate and the other substrate, the molecule 33 is in a twisted orientation, and as for this twist, there exist two kinds which turn to the right and the left on a conical locus 35 on which the molecule 33 can move. However, in any state, in the vicinity of the substrates 31, 32, a dipole 34 of the molecule 33 is arranged in a stable direction against a dipole 37 of the substrate, therefore, the molecule 33 is oriented stably between both the substrates, and a good bistability is shown. Also, when an electric field is applied from the outside, oriented states of a right turn and a left turn is brought to switching, therefore, these two oriented states can be confirmed visually as a color difference.
MURAKAMI MIKIO
MASUMI TATSUO
ANDO TORAHIKO
| JPS6236634A | 1987-02-17 | |||
| JPS6218522A | 1987-01-27 | |||
| JPS62235932A | 1987-10-16 | |||
| JPS62161123A | 1987-07-17 | |||
| JPS6353519A | 1988-03-07 |