Patent ID: 8435093
Filing Date: 2013-05-07
Classification: H01L

Abstract:
1. A method of manufacturing an organic EL display panel, comprising: a first step of preparing an EL substrate provided with a layer of banks defining a plurality of apertures arranged in a matrix in one-to-one correspondence with subpixels; a second step of detecting a volume per drop of drops ejected by each nozzle of an inkjet head having arranged thereon a row of a plurality of nozzles that eject drops of ink including organic material and solvent; a third step of allocating a predetermined number of nozzles to each aperture by dividing the plurality of nozzles into nozzle groups and assigning one of the nozzle groups to each aperture, and of determining an ejection number of drops to be ejected by each nozzle in each nozzle group in accordance with variation in the detected volume per drop for each nozzle as detected in the second step, so that a total volume of the drops to be ejected into each aperture falls within a reference range; and a fourth step of causing the inkjet head to scan over the EL substrate while causing nozzles in the nozzle groups to eject, into the aperture corresponding to each nozzle group, a number of drops equal to the ejection number determined for each nozzle in the third step, wherein each subpixel corresponds to a predetermined luminescent color, and a target value of the total volume of the drops to be ejected into each aperture is set for each luminescent color, and the third step includes