TOYOCOLOR presented the results of joint research with Chiba University at the 104th CSJ Annual Meeting (2024)

~ Elucidation of the color generation mechanism of pigments, further increase in sensitivity of image sensors can be realized~

artience group 's TOYOCOLOR CO., LTD. (President and Representative Director: Hideki Okaichi, Chuo-ku, Tokyo) is pleased to announce the results of its joint research on "Crystal Structure Analysis of Quinophthalone Yellow Pigment" with Chiba University (Acting President: Haruaki Nakatani) at the 104th CSJ Annual Meeting (2024).
The results of this research enable the design of the molecular structure of pigments that expresses the required spectral spectrum with high accuracy, and the design of color filter that achieves high sensitivity of image sensors.

Quinophthalone compounds have long been used as dyes and pigments because of their vivid yellow color, and are used in a variety of applications such as printing inks, liquid crystal displays, and sensors. However, the crystal structure that is the origin of the color has been poorly elucidated until now.
TOYOCOLOR and Chiba University have now clarified the mechanism of pigments color development from the viewpoint of crystal structure by performing single crystal structure analysis using model compounds.
This makes it possible to design the molecular structure of pigments that expresses the required spectral spectrum with high accuracy, and has shown the possibility of controlling the shade of printing inks, the appearance of the liquid crystal display, and the sensitivity of the image sensor. In particular, controlling the spectral spectrum of color filter is very effective in improving the sensitivity of the image sensor.

TOYOCOLOR will utilize the results of this research in product development to contribute to the evolution of image sensors for the future and to realize a future where all people can live enriched lives.

About the 104th CSJ Annual Meeting (2024)

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