Touch liquid crystal grating and 3D touch display device

Abstract

The invention discloses a touch liquid crystal grating and a 3D touch display device. Grating electrodes are arranged on a face toward a liquid crystal layer of a first substrate and in strip-like areas. A touch driving electrode is arranged in an interval area between adjacent strip-like areas. A touch sensitive electrode is arranged on a face of the first substrate opposite to the liquid crystal. When the grating electrodes are electrified, an electric field can be generated, so that liquid crystal molecules deflect to form strip-like gratings. The touch function can be fulfilled through the touch driving electrode and the touch sensitive electrode insulated from the first substrate. As the strip-like grating is formed only by forming a layer of grating electrode on the first substrate, the number of electrodes is reduced, and the light transmittance of the whole liquid crystal grating is improved. As a touch electrode and the grating electrode are both arranged on the first substrate, a voltage signal is conducted without using conducting resin, and counterpoint marks are not necessarily arranged on a second substrate, so that the preparation process is simplified, and the production cost is saved.

Description

technical field [0001] The invention relates to the technical field of 3D display, in particular to a touch-control liquid crystal grating and a 3D touch-control display device. Background technique [0002] At present, with the continuous development of liquid crystal display technology, three-dimensional (3D) display technology has attracted much attention. Three-dimensional display technology can make the picture three-dimensional and realistic. By superimposing and regenerating the image information, an image with a stereoscopic effect is formed. [0003] In order to realize three-dimensional display, the existing technology is to add a layer of liquid crystal grating on the display screen, such as figure 1 As shown, the liquid crystal grating is generally composed of an upper polarizer, a lower polarizer, an upper substrate, a lower substrate, and a liquid crystal layer between the two substrates. The upper substrate and the lower substrate have strip electrodes and su...

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Problems solved by technology

[0005] If touch and three-dimensional display functions need to be realized at the same time, two layers of mutually insulated touch electrodes are generally added to the upper substrate of the above-mentioned liquid crystal grating. In this way, the liquid crystal grating with touch function has at least 4 layers of electrodes, and more The electrode layer will reduce the light transmittance of the entire liquid crystal grating, and, since there are electrodes on the upper and lower substrates, it is necessary to use conductive glue to conduct the voltage signal, and it is also necessary to set the alignment on the two substrates. Marking for precise use on the box, which also increases the cost of preparation

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