Method for manufacturing organic el display panel, and ink drying device

A method of manufacturing an organic electroluminescence (EL) display panel, the method comprising:

• forming pixel electrode layers in a matrix on a substrate, wherein the matrix comprises rows and columns;
• arranging column banks, which extend in a column direction, above the substrate along a row direction, wherein at least a part of each of the column banks is between corresponding edges of adjacent pixel electrode layers in the row direction;
• applying ink including solute and two or more kinds of solvents to gaps between adjacent column banks, wherein the applied ink is continuous between column direction ends of the column banks in the column direction, the solute including a functional organic material;
• exhausting gas from atmosphere surrounding the substrate;
• drying the ink through placing the substrate in a state in which pressure of the atmosphere is equal to or lower than a predefined pressure, wherein the drying forms organic functional layers;
• and
• forming a light-transmissive counter electrode layer above the organic functional layers, wherein
• the exhausting of gas comprises:
• reducing, during a first period, pressure of the atmosphere from standard atmospheric pressure to a first pressure that is higher than vapor pressure of solvent having the highest vapor pressure among the solvents;
• and
• reducing, during a second period after the first period, pressure of the atmosphere to a second pressure that is lower than vapor pressure of solvent having the lowest vapor pressure among the solvents, and
• where pressure of the atmosphere is represented as 10x Pa (where X indicates a real number), an average of a change amount of a value of X per unit time during the second period has a greater absolute value than an average of a change amount of a value of X per unit time during the first period.