ALEXANDRIA, Va., Oct. 28 -- United States Patent no. 12,457,878, issued on Oct. 28, was assigned to Sharp K.K. (Sakai, Japan).
"Light-emitting device having double-sided light emissiion for reducing a difference in light emitted from different light emission direction" was invented by Tazuko Kitazawa (Sakai, Japan).
According to the abstract* released by the U.S. Patent & Trademark Office: "A light-emitting device emits light in a first direction and also emits light in a second direction opposite to the first direction. The light-emitting device includes a first light-emitting layer configured to emit light of a first color, and a second light-emitting layer configured to emit light of a second color different from the first color. The f...