UV (ultraviolet) curing light guiding ink and preparation method thereof

Abstract

The invention belongs to the technical field of preparation of light guiding ink and in particular relates to UV (ultraviolet) curing light guiding ink and a preparation method thereof. The UV curing light guiding ink comprises the following components by mass percent: 10-20% of diffusion particles, 20-30% of acrylic acid resin, 20-30% of methyl methacrylate, 20-30% of methylbenzene and butanone mixed solvent and 1-5% of light initiator dialkylbenzene acetophenone, wherein scattering particles are formed by curing and polymerizing methyl acrylic acid resin, carbamic acid ester, polyalcohol resin and light initiator dialkylbenzene acetophenone by virtue of ultraviolet irradiation. According to the UV curing light guiding ink, the added diffusion particles have an extinction effect and a unique comfortable and smooth handfeel, especially do not absorb UV and do not influence absorbed energy of the light initiator and also can maintain transparency, excellent texture and anti-scraping and wear-resisting effects; and the diffusion particles have good heat resistance and dispersity and can provide excellent optical diffusion effect and good brightness performance.

Description

technical field [0001] The invention belongs to the technical field of light guide ink preparation, and in particular relates to a UV curing light guide ink and a preparation method thereof. Background technique [0002] The light guide plate is an important part of the backlight module in the liquid crystal panel. When using the light guide ink, the ink is printed into reflective points through screen printing technology, so that the point light source is converted into a surface light source, so that the entire light guide plate can emit light uniformly. Effect. [0003] The composition of the light guide ink will directly affect the quality of the light guide point, and the quality of the light guide point will directly affect the brightness uniformity of the light guide plate. [0004] The main problems of the currently used light-guiding inks are that the resulting light-guiding plates have low luminance and poor luminous uniformity, and at the same time, the solvents ...

AI Technical Summary

Problems solved by technology

[0004] The main problems of the light guide inks currently used are the low luminance of the light guide plate and poor uniformity of light emission. At the same time, the solvent contained in the light guide ink is easy to volatilize, causing pollution to the environment and damaging the health of workers.

[0005] Patent ZL 200910241577.0 discloses a light-guiding ink and its preparation method and use method. The scattering particles used in it are inorganic particles such as titanium dioxide, barium sulfate, magnesium oxide, and silicon oxide. These inorganic particles are usually hard and irregular. It makes it difficult to achieve a uniform particle size of the dispersed phase, and the addition of inorganic particles will seriously affect the light transmittance, which severely limits the application of inorganic particles in light guide plates