FERROELECTRIC LIQUID CRYSTAL DISPLAY DEVICE

摘要

PROBLEM TO BE SOLVED: To provide a ferroelectric liquid crystal display device having a temperature compensation function which realizes a good dark state in the whole temperature range. SOLUTION: The ferroelectric liquid crystal display device has the following features. A first ferroelectric liquid crystal element and a second ferroelectric liquid crystal element having substantially the same phase difference as that of the first ferroelectric liquid crystal element are held between first and second polarizing plates. The transmission axes of the first and second polarizing plates, the slow phase axis of the first ferroelectric liquid crystal and the slow phase axis of the second ferroelectric liquid crystal are controlled to be perpendicular to the normal line of the substrate which holds the first ferroelectric liquid crystal element. When the environmental temperature of the liquid crystal device changes, the slow phase axis of the first ferroelectric liquid crystal element and the slow phase axis of the second ferroelectric liquid crystal element rotate in the same direction in the plane perpendicular to the normal line of the substrate and the rotational amounts are equal to each other.