| 摘要 |
PURPOSE: A polymethylmethacrylate bead-containing diffusion ink composition is provided to have same luminance and uniformity in whole region of a light guide plate through a refraction of light. CONSTITUTION: A polymethylmethacrylate bead-containing diffusion ink composition comprises 5-25 weight% of polymethylmethacrylate bead, 30-60 weight% of a solvent, 20-40 weight% of an acrylic copolymer comprising 20-40 weight% of methylmethacrylate, and 0.5-5 weight% of one or more additives selected from a dispersant, silicone antifoaming agent, and a leveling agent. The diameter of the bead is 3-12 micron. The solvent is one or more selected from dimethyl succinate, dimethyl glutarate, dimethyl adipate and diethylene glycol monoethyl ether acetate. |
