Method for manufacturing organic electroluminescent device

A method for producing an organic electroluminescent device, comprising the steps of:

• preparing an element substrate including a substrate and a plurality of organic electroluminescent elements supported by the substrate;
• and
• forming a thin film encapsulation structure covering the plurality of organic electroluminescent elements,
• wherein the step of forming the thin film encapsulation structure includes:
• step A of forming a first inorganic barrier layer,
• step B of, after step A, detecting particles, which include a first particle having an equivalent spherical diameter of 0.2 μm or longer and shorter than 0.3 μm, below or above the first inorganic barrier layer and acquiring position information on each of the particles,
• step C0 of, after step A, ashing a surface of the first inorganic barrier layer,
• step C of, after step C0, supplying each of the particles with a microscopic liquid drop of a coating liquid containing a photocurable resin by an inkjet method based on the position information to form a concave surface of the photocurable resin surrounding each of the particles,
• step D of, after step C, irradiating the photocurable resin with ultraviolet rays and thus curing the photocurable resin to form an organic barrier layer, and
• step E of, after step D, forming a second inorganic barrier layer on the first inorganic barrier layer and the organic barrier layer, wherein
• the step C includes a step of supplying a first microscopic liquid drop having a volume of 0.1 fL or larger and smaller than 10 fL to the first particle.