Liquid crystal display device with switchable viewing angle

Abstract

An LCD with switchable viewing angle includes a first substrate, second substrate, and a liquid crystal layer. The first substrate is provided with a first electrode and a first alignment film thereon. The second substrate is provided with a second electrode, a third electrode and a second alignment film thereon. The liquid crystal layer is disposed between the first alignment film and the second alignment film, and includes a plurality of liquid crystal molecules. All of the liquid crystal molecules in the liquid crystal layer are tilted at the same pretilt angle relative to the alignment films. When no bias voltage is applied to the first electrode, the LCD shows a narrow viewing angle; and when a bias voltage is applied to the first electrode, the LCD shows a wide viewing angle.

Description

technical field [0001] The invention relates to the field of display technology, in particular to a liquid crystal display device with a switchable viewing angle. Background technique [0002] A liquid crystal display (Liquid Crystal Display, LCD) has many advantages such as thinness, energy saving, and no radiation, so it has gradually replaced the traditional cathode ray tube (CRT) display. Currently, liquid crystal displays are widely used in high-definition digital televisions, desktop computers, personal digital assistants (PDAs), notebook computers, mobile phones, digital cameras and other electronic devices. [0003] At present, wide viewing angles belong to the mainstream development direction of liquid crystal displays. For example, notebook computers, personal digital assistants, tablet computers, mobile phones and other portable electronic devices with wide viewing angles all adopt wide viewing angle technology, so that people can see complete and undistorted ima...

AI Technical Summary

Problems solved by technology

[0005] However, the defect of the 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; the defect of the second method is that this dual-light source backlight system will cause liquid crystal The thickness and cost of the display are all increased, which does not conform to the development trend of thinner and lighter liquid crystal displays; the defect of the third method is that two kinds of electrodes, a wide viewing angle display driving electrode and a viewing angle control electrode, need to be set on the liquid crystal display, which makes the opening of the liquid crystal display The rate is reduced, resulting in a decrease in the brightness of the LCD panel

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