Patent ID: 9082732
Filing Date: 2015-07-14
Classification: H01L

Abstract:
1. A method of manufacturing an organic EL display panel, the method comprising: forming, above a substrate, a plurality of first electrodes in both a row direction and a column direction of a surface of the substrate; forming, above the substrate, a bank layer having openings that are in one-to-one correspondence with the first electrodes, the openings each exposing at least a part of a corresponding one of the first electrodes; forming organic light-emission layers by using an inkjet head having a plurality of nozzles, by (i) moving at least one of the inkjet head and the substrate in the row direction and thereby causing relative movement of the inkjet head and the substrate with respect to one another, and (ii) when each of the nozzles arrives above one of the openings as a result of the relative movement, causing said each of the nozzles to eject an ink liquid droplet with respect to said one of the openings so that the ink liquid droplet arrives inside said one of the openings; and forming a second electrode above the organic light-emission layers, wherein the bank layer is formed such that, among the openings, a first column-direction array of openings and a second column-direction array of openings are offset with respect to one another in the column direction by an offset amount that is no greater than 50% of a predetermined pitch at which the openings are disposed in the column direction, and the organic light-emission layers are formed by using some of the nozzles as a first group of nozzles and using some of the nozzles as a second group of nozzles, and by switching between the first group of nozzles and the second group of nozzles, the first group of nozzles used when the inkjet head arrives above the first column-direction array of openings and ejecting ink liquid droplets with respect to the first column-direction array of openings, the second group of nozzles used when the inkjet head arrives above the second column-direction array of openings and ejecting ink liquid droplets with respect to the second column-direction array of openings.