Visual angle controllable blue phase liquid crystal display with double-layer electrode structure

Abstract

The invention provides a visual angle controllable blue phase liquid crystal display with a double-layer electrode structure. The visual angle controllable blue phase liquid crystal display comprisesan upper substrate, an upper substrate plane electrode, a liquid crystal layer, an upper layer pixel electrode, insulating layers, a lower layer pixel electrode, an upper-layer common electrode, a lower-layer common electrode and a lower substrate, the upper substrate and the lower substrate are arranged in parallel, the liquid crystal layer is made of blue phase liquid crystal materials, the upper substrate comprises a lambda/2 double-axis compensation film, an upper substrate polarizing film and an upper substrate glass layer, the lower substrate comprises a lower substrate glass layer and alower substrate polarizing film, the upper substrate polarizing film is perpendicular to the light transmission axis direction of the lower substrate polarizing film, the upper-layer pixel electrode, the lower-layer pixel electrode, the upper-layer common electrode and the lower-layer common electrode are arranged on the lower substrate at intervals, the upper-layer pixel electrode and the lower-layer pixel electrode are separated by the insulating layer, the upper-layer common electrode and the lower-layer common electrode are separated by the insulating layer, and by applying or not applying a bias voltage to the upper substrate plane electrode, the conversion between a narrow-view-angle mode and a wide-view-angle mode is realized. The visual angle controllable blue phase liquid crystal display with the double-layer electrode structure has the characteristics of being low in voltage, high in transmittance and convenient to operate.

Description

technical field [0001] The invention relates to a liquid crystal display device, in particular to a blue-phase liquid crystal display with a double-layer electrode structure and a controllable viewing angle. Background technique [0002] Liquid crystal displays have gradually replaced cathode ray tube displays due to their lightness, thinness, low power consumption, and no radiation, and have been widely used. But the original liquid crystal displays had narrower viewing angles than cathode ray tube displays. In order to increase the viewing angle of liquid crystal displays, techniques such as patterned vertical alignment (PVA) mode, multi-domain vertical alignment (MVA) mode, in-plane switching (IPS) mode and fringe field switching (FFS) mode have been proposed successively, and liquid crystal displays have been realized. Wide viewing angle display of the monitor. [0003] At present, due to the increasing number of portable electronic devices such as mobile phones, PDAs,...

AI Technical Summary

Problems solved by technology

The dual-box structure method uses a main liquid crystal panel to display images, and an additional liquid crystal panel to control the viewing angle, but this method will increase the thickness of the liquid crystal panel, manufacturing costs and energy consumption; the sub-pixel method is to divide a complete pixel into main pixels and sub-pixels; the main pixel is mainly used to display image information, and the sub-pixel is used to control the viewing angle. This method increases the difficulty of manufacturing and driving and has a low transmittance; and the response speed of traditional nematic liquid crystals is slow, which cannot meet Continuous switching between wide and narrow viewing angles

[0004] In order to solve the problems of slow response time and low light utilization rate of nematic liquid crystal displays, blue phase liquid crystals have been proposed.

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