Liquid crystal lens device and image display device

摘要

According to one embodiment, an image display device includes a liquid crystal lens device and an image display unit. The liquid crystal lens device includes a liquid crystal optical element unit. The liquid crystal optical element unit includes a first substrate unit, a second substrate unit and a liquid crystal layer. The liquid crystal layer is provided between the first and second substrate units. The liquid crystal layer has an alignment twisted by an angle not less than 5 degrees and not more than 45 degrees along a normal axis of a major surface of the first substrate unit. The image display unit includes a display unit. The second substrate unit is disposed between the first substrate unit and the display unit.

主权项

1. An image display device, comprising:
a liquid crystal lens device including a liquid crystal optical element unit, the liquid crystal optical element unit including
a first substrate unit including
a first substrate having a first major surface, anda plurality of first electrodes provided on the first major surface to extend along a first direction, the first electrodes being arranged in a direction non-parallel to the first direction,a second substrate unit including
a second substrate having a second major surface opposed to the first major surface, anda counter electrode provided on the second major surface, anda liquid crystal layer provided between the first substrate unit and the second substrate unit, the liquid crystal layer having a first alignment direction and a second alignment direction, the first alignment direction being a long-axis direction of liquid crystal molecules on the first substrate unit when projected onto the first major surface, the first alignment direction being orthogonal to the first direction, the second alignment direction being a long-axis direction of liquid crystal molecules on the second substrate unit when projected onto the first major surface, the liquid crystal layer having an alignment twisted between the first alignment direction and the second alignment direction by an angle not less than 5 degrees and not more than 45 degrees along a normal axis of the first major surface; and an image display unit including a display unit, the second substrate unit being disposed between the first substrate unit and the display unit, the display unit being configured to cause image light of polarized light having a polarizing axis parallel to the second alignment direction to be incident on the liquid crystal optical element unit.