ALEXANDRIA, Va., June 16 -- United States Patent no. 12,308,617, issued on May 20, was assigned to SEIKO EPSON Corp. (Tokyo) and SOPHIA SCHOOL Corp. (Tokyo).
"Light emitting device and projector" was invented by Yohei Nakagawa (Tokyo to Shinjuke ku, Japan), Shunsuke Ishizawa (Tokyo to Shinjuke ku, Japan) and Katsumi Kishino (Akiruno, Japan).
According to the abstract* released by the U.S. Patent & Trademark Office: "In a light emitting device, a first diametrical size that is the largest size of a columnar part between a substrate side of a light emitting layer and an opposite side of the substrate, the columnar part has a size no larger than the first diametrical size in an area between the substrate side of the light emitting layer and ...