ALEXANDRIA, Va., Oct. 21 -- United States Patent no. 12,446,378, issued on Oct. 14, was assigned to BOLB Inc. (Livermore, Calif.).
"Current spreading structure for light-emitting diode" was invented by Jianping Zhang (Arcadia, Calif.), Ying Gao (Fremont, Calif.) and Ling Zhou (Dublin, Calif.).
According to the abstract* released by the U.S. Patent & Trademark Office: "An apparatus has a current spreading base with an n-contact. The current spreading base has a small n-type resistivity to promote lateral electron flow. A current spreading cap is on top of the current spreading base. The current spreading cap has a large n-type resistivity to suppress vertical electron flow and promote lateral electron flow. An active region is on top of th...