Patent ID: 8414975

Claim:
A method for providing coating materials, one at a time, onto a substrate perpendicularly so that the coating materials are in order vertically, comprising the steps of: providing an input device for transmitting at least one ingredient of each of the coating materials into an extrusion device; providing a rotational die for receiving each of the coating materials from the input device and the extrusion device, wherein each of the coating materials travels in a radial direction in the rotational die; and rotating the rotational die so that the tangential speed on the periphery of the rotational die is identical to the linear speed of the substrate, thus providing each of the coating materials onto the substrate perpendicularly so as to make an electronic device selected from a group consisting of an organic electronic device, an organic light-emitting diode, and an organic photovoltaic device; wherein an area of the substrate for receiving each of the coating materials from the rotational die is 1% to 99% of the entire area of the periphery of the rotational die.