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

Abstract

A liquid crystal display device with switchable viewing angle and a viewing angle switching method, wherein the liquid crystal display device comprises a display panel (20), the display panel (20) comprises a first substrate (21), a A second substrate (22) and a liquid crystal layer (23) located between the first substrate (21) and the second substrate (22), the first substrate (21) is provided with a viewing angle control electrode (215), and the second substrate ( 22) A common electrode (225) and a pixel electrode (227) are provided on the display panel (20), and the display panel (20) can be switched between a wide viewing angle mode and a narrow viewing angle mode, and the liquid crystal display device further comprises a display control module (33) and a voltage The output module (34), in the wide viewing angle mode, the screen refresh frequency of the display panel (20) is the same as the data input frequency of the screen data input to the display control module (33), the voltage output module (34) to the viewing angle control electrode ( 215) outputting a DC voltage; in the narrow viewing angle mode, the screen refresh frequency of the display panel (20) is twice or four times the data input frequency of the screen data input to the display control module (33), and the voltage output module (34) A periodic alternating voltage is output to the viewing angle control electrode (215).

Description

technical field [0001] The invention relates to the technical field of liquid crystal display, in particular to a liquid crystal display device and a method for switching a viewing angle. 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. However, in today's society, people pay more and more attention to protecting their privacy, and there are many things that they don't like to share with others. In public places, I always hope that when I look at my mobile phone or ...

AI Technical Summary

Problems solved by technology

[0006] The object of the present invention is to provide a liquid crystal display device with a switchable viewing angle and a viewing angle switching method, which can realize switching between wide and narrow viewing angles in different occasions, and solve the problems of uneven display, image sticking, and flickering on the display panel.

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