Patent ID: 9153782
Filing Date: 2015-10-06
Classification: H01L,H05B

Abstract:
1. A method of manufacturing an organic light-emitting element, comprising: preparing ink including functional material as a material for a functional layer and a solvent dissolving the functional material, and filling an inkjet device having an ink ejection nozzle with the ink, the functional material having a weight-average molecular weight equal to or greater than 200,000 and equal to or less than 250,000; preparing a substrate having a base layer including a first electrode; positioning the inkjet device above the substrate, and causing the inkjet device to eject a drop of the ink onto the base layer of the substrate; forming the functional layer by drying the ink ejected onto the base layer of the substrate; and forming a second electrode above the functional layer, wherein in the preparation of the ink, when a value Z denotes a reciprocal of the Ohnesorge number Oh determined by density ρ (g/dm in the ejection of the drop of the ink, speed V (m/s) of the ejected drop of the ink is within a range of Formula 2, and the value Z and the speed V (m/s) satisfy Formula 3: where Z=1/Ohnesorge number Oh;