Patent ID: 8778712
Filing Date: 2014-07-15
Classification: H01L

Abstract:
1. A method of manufacturing an organic electroluminescence display panel, comprising: preparing a substrate; forming a thin-film transistor layer above the substrate, the thin-film transistor layer including a power supply electrode; forming a planarizing film above the thin-film transistor layer; forming, in the planarizing film and simultaneously with the forming of the planarizing film, a plurality of contact holes; forming, after the forming of the plurality of contact holes, an electrode layer above the planarizing film which is in direct contact with the thin-film transistor layer via the plurality of contact holes; forming, after the forming of the electrode layer, a bank including a plurality of openings and a plurality of concaves, the plurality of openings being arranged in rows and columns and defining, in a one-to-one correspondence, regions for forming organic electroluminescence elements, each of the plurality of contact holes being between a pair of adjacent ones of the plurality of openings in one of the columns, a part of the bank being sunken into the contact holes to form the concaves at a surface of the part of the bank, the upper surface of the bank having repellency; and forming a light-emitting layer in each of the plurality of openings by ejecting drops of an ink from a predetermined number of nozzles among a plurality of nozzles of an inkjet head into each of the plurality of openings while moving the inkjet head relative to the substrate, the ink containing an organic material and a solvent, the solvent drying by evaporation, wherein each of the plurality of nozzles ejects the drops of the ink into one of the plurality of concaves when above the one of the plurality of concaves for ejecting the drops of the ink through every one of the plurality of nozzles.