Liquid crystal optical device and display apparatus

摘要

A liquid crystal optical device includes a liquid crystal optical unit and a drive unit. The liquid crystal optical unit includes a first and second substrate unit, and a liquid crystal layer. The first substrate unit includes a first substrate, a plurality of first electrodes, a second electrode, and a third electrode. The second substrate unit includes a second substrate, a plurality of first opposing electrodes, a second opposing electrode, and a third opposing electrode. The drive unit is configured to implement a first operation including subjecting the first electrodes to a first potential, subjecting the second electrode to a second potential, subjecting the third electrode to a third potential, subjecting the first opposing electrodes to a first opposing potential, subjecting the second opposing electrode to a second opposing potential, and subjecting the third opposing electrode to a third opposing potential.

主权项

1. A liquid crystal optical device, comprising:
a liquid crystal optical unit including
a first substrate unit including
a first substrate having a first major surface,a plurality of first electrodes provided on the first major surface to extend in a first direction, the first electrodes being arranged in an intersecting direction intersecting the first direction,a second electrode provided between the first electrodes on the first major surface to extend in the first direction, anda third electrode provided between the second electrode and one of the first electrodes on the first major surface to extend in the first direction,a second substrate unit including
a second substrate having a second major surface facing the first major surface,a plurality of first opposing electrodes provided on the second major surface to extend in the first direction, each of the first opposing electrodes partly or wholly overlapping each of the first electrodes when projected onto a plane parallel to the first major surface,a second opposing electrode provided on the second major surface to extend in the first direction, the second opposing electrode being separated from the first opposing electrodes in the intersecting direction, the second opposing electrode partly or wholly overlapping the second electrode when projected onto the plane, anda third opposing electrode provided on the second major surface to extend in the first direction, the third opposing electrode being separated from the first opposing electrodes and the second opposing electrode in the intersecting direction, the third opposing electrode partly or wholly overlapping the third electrode when projected onto the plane, anda liquid crystal layer provided between the first substrate unit and the second substrate unit; and a drive unit configured to implement a first operation including subjecting the first electrodes to a first potential, subjecting the second electrode to a second potential, subjecting the third electrode to a third potential, subjecting the first opposing electrodes to a first opposing potential, subjecting the second opposing electrode to a second opposing potential, and subjecting the third opposing electrode to a third opposing potential, the second potential being not more than the first potential, the third potential being lower than the second potential, the first opposing potential being lower than the first potential, the second opposing potential being lower than the second potential, the third opposing potential being higher than the second opposing potential, the absolute value of the difference between the second potential and the second opposing potential being not more than the absolute value of the difference between the first potential and the first opposing potential, the absolute value of the difference between the third potential and the third opposing potential being less than the absolute value of the difference between the second potential and the second opposing potential.