Liquid-crystal active monomer for polyimide surface of alignment film and liquid crystal panel

Abstract

The invention provides a liquid-crystal active monomer for the polyimide surface of an alignment film and a liquid crystal panel. The molecular weight of the liquid-crystal active monomer ranges from 322 to 500; and the wavelength of ultraviolet light required for polymerizing and curing the liquid-crystal active monomer with the polyimide surface is greater than or equal to 300 nanometers. The liquid-crystal active monomer reduces the interaction force between a liquid crystal composition and the polyimide surface of the alignment film, and improves the phenomenon of uneven display of the dripping patterns of the liquid crystal composition in a dripping injection process; and simultaneously, as the speed of polymerizing and curing by the ultraviolet light is increased, the purposes of saving energy and reducing carbon are achieved.

Description

【Technical field】 [0001] The invention relates to a liquid crystal active monomer and a liquid crystal panel, in particular to a liquid crystal active monomer used on the polyimide surface of an alignment film and a liquid crystal panel with the liquid crystal active monomer. 【Background technique】 [0002] The liquid crystal injection method in the traditional liquid crystal panel manufacturing process uses the capillary principle to slowly inject liquid crystal between the two glass substrates that have been combined. The disadvantage of this method is that it is very time-consuming and wastes liquid crystal material. [0003] The aforementioned liquid crystal injection method has been gradually replaced by a One Drop Filling (ODF) technique. The dropping injection technique is to directly drop the liquid crystal on a glass substrate through a liquid crystal dropping device, and then combine it with another glass. This new technology can greatly save the time and material...

AI Technical Summary

Problems solved by technology

[0009] When changing the cell gap of the liquid crystal and making it smaller than 3.8 microns (μm), it will be difficult for the existing liquid crystal active monomer 1 to diffuse and distribute in a large area on the polyimide surface 2 of the alignment film, As a result, different components of the liquid crystal active monomer 1 are deposited unevenly on the polyimide surface 2 of the alignment film (such as Figure 1B and 1C shown)

Therefore, when the crystal cavity gap of the liquid crystal is less than 3.8 μm, the liquid crystal panel will produce unevenness in the display of the drip pattern

[0010] In more detail, the reason for the uneven display of the above-mentioned graphics is that the interaction force (interaction) between the liquid crystal active monomer 1 and the polyimide surface 2 of the alignment film is too large, so it is not conducive to make the liquid crystal active monomer The liquid crystal composition of body 1 is uniformly diffused and distributed on the polyimide surface of the alignment film 2

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