US Patent Issued to FUJIFILM on Nov. 25 for "Wavelength selective absorption filter and organic electroluminescent display device" (Japanese Inventors)

ALEXANDRIA, Va., Nov. 25 -- United States Patent no. 12,479,989, issued on Nov. 25, was assigned to FUJIFILM Corp. (Tokyo).

"Wavelength selective absorption filter and organic electroluminescent display device" was invented by Nobutaka Fukagawa (Minami-ashigara, Japan), Hirofumi Toyama (Minami-ashigara, Japan), Daisuke Sasaki (Minami-ashigara, Japan) and Yoshihiro Jimbo (Minami-ashigara, Japan).

According to the abstract* released by the U.S. Patent & Trademark Office: "There are provided a wavelength selective absorption filter including a resin, and four types of dyes A to D each having a main absorption wavelength range in different specific wavelength regions, in which an absorbance Ab (Lambda) of the wavelength selective absorption f...