Liquid crystal display device with switchable viewing angle and viewing angle switching method thereof

Abstract

An LCD includes a first substrate, a second substrate, and a liquid crystal layer. The first substrate is provided with a first electrode. The first electrode is provided with a plurality of first elongated electrodes. The second substrate is provided with a second electrode and a third electrode. The second electrode is a common electrode and the third electrode is a pixel electrode. The second electrode is provided with a plurality of second elongated electrodes. The first elongated electrodes and the second elongated electrodes are arranged alternately, and the first elongated electrodes have no overlap with the second elongated electrodes. When no bias voltage is applied between the first electrode and the second electrode, the LCD is displayed with a wide viewing angle; and when a bias voltage is applied between the first electrode and the second electrode, the LCD is displayed with a narrow viewing angle.

Description

technical field [0001] The invention relates to the technical field of liquid crystal display, in particular to a liquid crystal display device capable of switching viewing angles and a viewing angle switching method thereof. Background technique [0002] Liquid crystal display (liquid crystal display, LCD) has the advantages of good image quality, small size, light weight, low driving voltage, low power consumption, no radiation and relatively low manufacturing cost, and occupies a dominant position in the field of flat panel display. [0003] Currently, liquid crystal display devices are gradually developing toward wide viewing angles. For example, liquid crystal display devices using in-plane switching (IPS) or fringe field switching (FFS) modes can achieve wider viewing angles. The wide viewing angle design allows users to see a complete and undistorted picture from all directions. However, in today's society, people pay more and more attention to protecting their priva...

AI Technical Summary

Problems solved by technology

[0005] However, the disadvantage of the above-mentioned first method is that this method requires an additional louver shielding film, which needs to be carried by the user, which causes great inconvenience to the user, and can only realize narrow viewing angle display after the anti-peeping film is pasted. mode; the defect of the above-mentioned second method is that this kind of dual-light source backlight system will cause the thickness and cost of the liquid crystal display to increase, which is not in line with the development trend of thinning and thinning of the liquid crystal display; the defect of the above-mentioned third method is that the liquid crystal display device needs to There are two kinds of electrodes, the wide viewing angle display driving electrode and the viewing angle control electrode, which reduce the aperture ratio of the liquid crystal display device, resulting in a decrease in the brightness of the panel of the liquid crystal display device and making the manufacturing process more complicated.

Images