Organic EL display panel manufacturing method and functional layer forming device

A method of manufacturing a display panel in which a plurality of pixels are arranged in a matrix of rows and columns, the method comprising:

• forming pixel electrodes arranged in the matrix above a substrate;
• forming column banks above the substrate in spaces between the pixel electrodes in a row direction to be parallel with each other and to extend in a column direction;
• forming functional layers including organic light emitting layers in gaps between the column banks that are adjacent in the row direction, the forming of the functional layers including application processing of causing relative motion in the row direction between the substrate and a head provided with a plurality of nozzles arranged along the column direction while performing ink ejection from selected nozzles among the plurality of nozzles to supply the gaps with one or more inks each including a functional material;
• and
• forming a counter electrode above the functional layers, wherein
• in the forming of the functional layers, among a set of the gaps to which one of the one or more inks is to be supplied, nozzle patterns each representing a combination of the selected nozzles for a gap differ between a first gap and a second gap in a sequence in the row direction of the set, wherein
• for each of N gaps in a sequence in the row direction of the set, a different one of the nozzle patterns is used, N being an integer equal to or greater than six, and
• the application processing is performed with respect to the gaps of the set by repeatedly using the nozzle patterns for the N gaps in the row direction.

A device for manufacturing functional layers in an organic EL display panel in which a plurality of pixels are arranged in a matrix of rows and columns, the device comprising:

• an application device configured to apply one or more inks each including a functional material to gaps between column banks that are parallel with each other, extend in a column direction, and are above the substrate in spaces between the pixel electrodes in a row direction, the application device comprising:
• a head that includes a plurality of nozzles arranged along the column direction wherein a width of the head in the row direction is greater than a width of the organic EL display panel;
• a moving unit configured to cause relative motion in the row direction between the head and the substrate;
• and
• a supply controller configured to cause the one or more inks to be supplied from selected nozzles among the plurality of nozzles such that, in the forming of the functional layers, among a set of the gaps to which one of the one or more inks is to be supplied, nozzle patterns each representing a combination of the selected nozzles for a gap differ between a first gap and a second gap in a sequence in the row direction of the set.