‘’Functional dyes’’ are dyes that have specific functions in various environment.
Unlike general dyes and pigments, the functional dyes are not only for absorbing specific wavelengths in the visible light range and coloring fibers, but also they can have good solubility in resins, can form color under the influence of acid, and can change their property stimulated by external energy such as light and heat. We are conducting research and development, manufacturing for various application. And is widely used for display devices mainly in the information and electronics industry.
Dyes are soluble in solvents, pigments are insoluble in solvents. The advantage of dyes is that they are highly transparent because they are soluble in solvents, and they are easy to fine-tune the color of the structure and absorption property. The disadvantage of dyes is that they are more sensitive to light and heat than pigments. We mainly develop xanthene dyes that has resistance against light and heat. We are researching minimize the disadvantages of dyes and enhance their advantages.
Color filters are used to give colors in displays such as smartphones and TVs. The light from the backlight passes through the color filter to produce the color. Dyes in color filter play an important role in producing better colors. In recent years, color filters are required to have high brightness and high definition. Therefore, color filters are being replaced with pigments from dyes. The advantages of the dye are transparency and vividness.
