A kind of liquid crystal lens and 3D display device

Abstract

The invention discloses a liquid crystal lens and a 3D display device. The device comprises an upper substrate and a lower substrate, which are oppositely placed, a plate shape electrode is arranged on the side of the upper substrate, facing the lower substrate; the liquid crystal lens has multiple lens units; a slit is arranged on the plate shape electrode; the orthographic projection of the slit covers the orthographic projection of the gap between two neighboring lens units. The deflection of the liquid crystal molecular near the upper substrate and in the zone corresponding to the slit can be altered through the arrangement of the slit in the liquid crystal lens provided by the embodiment of the invention, a local transverse electric field can be formed in the zone, and a vertical isopotential line is further formed, to adjust the apex angle of the gradient curve for refractivity into a sharp corner, and better gradient curve for refractivity is thus achieved.

Description

technical field [0001] The invention relates to the field of display technology, in particular to a liquid crystal lens and a 3D display device. Background technique [0002] In 3D display technology, when a user observes a certain picture, different light rays presenting the same picture usually enter the user's left eye and right eye respectively, and the different light rays form slightly different images in the user's left eye and right eye respectively. The picture is to simulate the picture with slight difference observed by the two eyes when the human eye observes a three-dimensional object, so as to realize 3D display. [0003] In the prior art, in order to achieve the above-mentioned 3D display purpose, a liquid crystal lens is usually provided in a liquid crystal display device. The liquid crystal lens includes a plurality of lens units, and each lens unit is equivalent to a cylindrical lens. When the light that presents the same picture passes through the liquid ...

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Problems solved by technology

[0004] However, since the electric field formed between the plate electrode 01 and each strip electrode 02 has smooth equipotential lines, the deflection of the liquid crystal molecules cannot be abruptly changed, so that the sharp angle of the preferred refractive index gradient curve cannot be formed, so that the current Some structures cannot achieve the ideal refractive index gradient curve, from figure 2 It can be concluded that the effective utilization rate of the liquid crystal lens is only 21 μm / (21 μm+16 μm)=56.8%

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