US Patent Issued to TOPPAN on Aug. 19 for "Quantum dot and method of producing the same; and wavelength converting member, lighting member, back light unit, and display device using quantum dot" (Japanese Inventors)

ALEXANDRIA, Va., Aug. 20 -- United States Patent no. 12,391,880, issued on Aug. 19, was assigned to TOPPAN INC. (Tokyo).

"Quantum dot and method of producing the same; and wavelength converting member, lighting member, back light unit, and display device using quantum dot" was invented by Yuko Ogura (Fukuoka, Japan), Yuka Takamizuma (Fukuoka, Japan), Kazunori Iida (Fukuoka, Japan), Emi Tsutsumi (Fukuoka, Japan), Masanori Tanaka (Fukuoka, Japan) and Soichiro Nikata (Fukuoka, Japan).

According to the abstract* released by the U.S. Patent & Trademark Office: "A Cd-free blue fluorescent quantum dot with a narrow fluorescence FWHM. The quantum dot does not contain cadmium and its fluorescence FWHM is 25 nm or less. The quantum dot is preferabl...