US Patent Issued to Dai Nippon Printing on Jan. 28 for "Barrier film, wavelength conversion sheet using barrier film, and display device using wavelength conversion sheet" (Japanese Inventors)

ALEXANDRIA, Va., Jan. 29 -- United States Patent no. 12,211,962, issued on Jan. 28, was assigned to Dai Nippon Printing Co. Ltd. (Tokyo).

"Barrier film, wavelength conversion sheet using barrier film, and display device using wavelength conversion sheet" was invented by Tatsuji Nakajima (Tokyo), Takeshi Sakamoto (Tokyo), Syuichi Tamura (Tokyo), Tatsunori Itai (Tokyo) and Ryutaro Harada (Tokyo).

According to the abstract* released by the U.S. Patent & Trademark Office: "A barrier film for a wavelength conversion sheet, which can effectively suppress adhering of a light guide plate to the wavelength conversion sheet and suppresses damaging of a wavelength conversion sheet, a light guide plate, a diffusion plate, etc. A barrier film includes...