ALEXANDRIA, Va., June 12 -- United States Patent no. 12,302,727, issued on May 13, was assigned to LG DISPLAY Co. LTD. (Seoul, South Korea).
"Organic light emitting device" was invented by Byungsoo Kim (Goyang-si, South Korea).
According to the abstract* released by the U.S. Patent & Trademark Office: "An organic light emitting device having a structure that a plurality of light emitting units are deposited, is disclosed, of which white color shift caused by variation of a viewing angle is reduced through a combination between dopant materials of the respective light emitting units. The organic light emitting device includes dopant materials emitting light of different wavelengths from the plurality of light emitting units. Therefore, in ...