Liquid crystal lens, driving method thereof, and stereoscopic display device

Abstract

The invention discloses a liquid crystal lens, a driving method of the liquid crystal lens, and a stereo display device. The liquid crystal lens comprises a plurality of liquid crystal lens units of the same structure, wherein each liquid crystal lens unit comprises a first substrate, a second substrate, a first electrode, a second electrode, a dielectric material, a first alignment film, a second alignment film, a liquid crystal material, a dielectric layer arranged on the second electrode and located between the second electrode and the second alignment film, and a third electrode arranged on the dielectric layer and located between the dielectric layer and the second alignment film, and the third electrode comprises two second strip-shaped electrodes symmetrically arranged on two opposite lateral sides of the dielectric layer and parallel to a plurality of first strip-shaped electrodes. The liquid crystal lens has the advantages that crosstalk can be reduced obviously, stereo display quality can be improved, and the comfort level of observing stereo display is greatly improved. The invention further discloses the driving method of the liquid crystal lens when the liquid crystal lens is used for 3D display and the stereo display device comprising the liquid crystal lens.

Description

technical field [0001] The invention relates to stereoscopic display technology, in particular to a liquid crystal lens capable of reducing crosstalk, a driving method for the liquid crystal lens when performing 3D display, and a stereoscopic display device with the liquid crystal lens. Background technique [0002] The three-dimensional display device that uses liquid crystal lenses to realize free three-dimensional display mainly uses the positive and negative electrodes respectively arranged on the two substrates on both sides of the liquid crystal layer, and applies driving voltages of different sizes to different electrodes, so as to create a positive and negative electrode between the two substrates. Vertical electric fields with different strengths are formed to drive liquid crystal molecules to align to form a variable-focus liquid crystal lens. Therefore, it is only necessary to control the voltage distribution on the corresponding electrodes, and the refractive ind...

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Problems solved by technology

[0008] Aiming at the above-mentioned problem that the optical path difference distribution of the liquid crystal lens units at the junction of the two liquid crystal lens units obviously deviates from the ideal parabola, resulting in crosstalk in the stereoscopic display device, the present invention proposes a liquid crystal lens structure that reduces the corresponding crosstalk. After the voltage is set, compared with the general liquid crystal lens, the crosstalk of the liquid crystal lens stereoscopic display device can be reduced to a lower level, and the stereoscopic display quality can be improved.

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