Lichtemittierende Vorrichtung, optischer Druckkopf mit solcher Vorrichtung, und optischer Drucker mit solchem Druckkopf

摘要

A light-emitting device formed by applying a crystal formation process to a substrate with a free surface on which provided, in mutually adjacent manner, are a non-nucleation surface and a nucleation surface with a nucleation density larger than that of the non-nucleation surface, wherein the nucleation surface is provided in an oblong form.