An object is to improve use efficiency of an evaporation material, to reduce manufacturing cost of a light-emitting device, and to reduce manufacturing time needed for a light-emitting device including a layer containing an organic compound. The method includes forming a substrate structure, wherein the substrate structure includes a substrate and a fin-shaped barrier layer formed on a surface of the substrate; forming a quantum well material layer on a surface of the fin-shaped barrier layer; and forming a barrier material layer on the QW material layer. The target grid includes a plurality of cells and each cell has a target element positioned at its corners so that neighboring cells share target elements. With this construction, the polychromatic yarn dyeing apparatus decreases a space for installation and conducts continuous and repetitive dyeing operations with a unit pattern having unique color, width and arrangement. The high thermal conductive material exhibits not only properties that satisfy the balance between the coefficient of thermal expansion and the coefficient of thermal conductivity required for actual electronic components and the like, but also high thermal conductivity.