Fresnel liquid crystal lens and 2D/3D switchable display panel

摘要

A Fresnel liquid crystal lens and a 2D/3D switchable display panel are provided. The Fresnel liquid crystal lens includes a plurality of liquid crystal lens units. Each liquid crystal lens unit includes a first main electrode and two first sub electrodes disposed on a first substrate, a second main electrode and two second sub electrodes disposed on a second substrate, and a liquid crystal layer disposed between the first and second substrates. The first sub electrodes are disposed on two opposite sides of the first main electrode, and a first gap is formed between the first main electrode and the first sub electrode. The second sub electrodes are disposed on two opposite sides of the second main electrode, and a second gap is formed between the second main electrode and the second sub electrode. In a vertical projection direction, the first main electrode overlaps the second main electrode, the first sub electrodes overlap the second sub electrodes, and the first main electrode partially overlaps the second sub electrodes.

主权项

1. A Fresnel liquid crystal lens, comprising:
a first substrate; a second substrate, disposed opposite to the first substrate; a liquid crystal layer, disposed between the first substrate and the second substrate; a plurality of first liquid crystal lens units, wherein each of the first liquid crystal lens units comprises:
a first main electrode, disposed on a surface of the first substrate facing the liquid crystal layer, wherein the first main electrode has a first voltage;at least two first sub electrodes, disposed on the surface of the first substrate facing the liquid crystal layer and located on two opposite sides of the first main electrode, wherein the first sub electrodes have a second voltage, and a first gap exists between the first main electrode and each of the first sub electrodes;a second main electrode, disposed on a surface of the second substrate facing the liquid crystal layer, wherein the second main electrode has a third voltage; andat least two second sub electrodes, disposed on the surface of the second substrate facing the liquid crystal layer and located on two opposite sides of the second main electrode, wherein the second sub electrodes have a fourth voltage, a second gap exists between the second main electrode and each of the second sub electrodes, the first main electrode overlaps the second main electrode in a vertical projection direction, the first sub electrodes overlap the second sub electrodes in the vertical projection direction respectively, and the first main electrode partially overlaps the second sub electrodes in the vertical projection direction respectively; and a plurality of second liquid crystal lens units, the second liquid crystal lens units and the first liquid crystal lens units being arranged alternately, wherein each of the second liquid crystal lens units comprises:
a third main electrode, disposed on the surface of the second substrate facing the liquid crystal layer, wherein the third main electrode has a fifth voltage;at least two third sub electrodes, disposed on the surface of the second substrate facing the liquid crystal layer and located on two opposite sides of the third main electrode, wherein the third sub electrodes have a sixth voltage, and a third gap exists between the third main electrode and each of the third sub electrodes;a fourth main electrode, disposed on the surface of the first substrate facing the liquid crystal layer, wherein the fourth main electrode has a seventh voltage; andat least two fourth sub electrodes, disposed on the surface of the first substrate facing the liquid crystal layer and located on two opposite sides of the fourth main electrode, wherein the fourth sub electrodes have an eighth voltage, a fourth gap exists between the fourth main electrode and each of the fourth sub electrodes, the third main electrode overlaps the fourth main electrode in the vertical projection direction, the third sub electrodes overlap the fourth sub electrodes in the vertical projection direction respectively, and the third main electrode partially overlaps the fourth sub electrodes in the vertical projection direction respectively.