Blue phase liquid crystal display device and manufacturing method thereof

Abstract

The invention provides a blue phase liquid crystal display device and a manufacturing method thereof. The blue phase liquid crystal display device provided by the invention is characterized in that a quantum dot is doped in a blue phase liquid crystal layer, the grain size of the quantum dot is nanometer-scale, the temperature range of blue phase liquid crystal can be widened, the hysteresis can be reduced and the quantum dot can realize photoluminescence so as to form colorful display. The blue backlight can be applied to the display device, so that the backlight use ratio can be effectively increased, the color gamut of the panel can be promoted and the backlight can be applied to the aspects of quick display and 3D display. According to the manufacturing method for the blue phase liquid crystal display device provided by the invention, the manufacturing difficulty is low, the manufactured blue phase liquid crystal display device has wide blue phase temperature range, the alignment layer and the colorful light-filtering layer are not required, and the blue backlight can be applied to 3D display.

Description

technical field [0001] The invention relates to the field of display technology, in particular to a blue-phase liquid crystal display device and a manufacturing method thereof. Background technique [0002] With the development of display technology, liquid crystal displays (Liquid Crystal Display, LCD) and other flat display devices are widely used in mobile phones, TVs, personal digital assistants due to their advantages of high image quality, power saving, thin body and wide application range. , digital cameras, notebook computers, desktop computers and other consumer electronics products have become the mainstream of display devices. [0003] Most of the liquid crystal display devices currently on the market are backlight liquid crystal displays, which include a liquid crystal display panel and a backlight module. The working principle of the liquid crystal display panel is to place liquid crystal molecules between two parallel glass substrates. There are many vertical ...

AI Technical Summary

Problems solved by technology

However, the blue phase liquid crystal itself has many disadvantages, such as: narrow temperature range, generally 1-2°C; high driving voltage, it is difficult to return to the initial state after power-on, that is, there is hysteresis, and it is difficult to be used in practical applications

[0006] In order to broaden the temperature range of the blue phase liquid crystal, it is generally possible to stabilize the blue phase liquid crystal with a polymer. This method requires adding a polymerizable monomer to the liquid crystal. When it is heated to the blue phase temperature range, it is polymerized by ultraviolet radiation, which can be greatly improved. To a certain extent, the temperature range of the blue phase is broadened, but this method requires high temperature accuracy and needs to be controlled within a temperature range of ±1°C or even smaller, which is very difficult to achieve

Images