Patent ID: 9640592
Date: 2017-05-02
CPC Classifications: B41J,H01L,H05B

Claim:
1. A method of forming a functional layer of an organic light-emitting device in which a plurality of pixels are disposed, each including a plurality of sub-pixels of different colors arranged next to one another, by a process including: preparing a bank substrate including a base substrate and a plurality of banks extending in one direction, parallel to each other, along a surface of the base substrate; applying ink to each of a plurality of groove regions between adjacent ones of the banks; and drying the ink after application, the method comprising: defining a plurality of groove region groups on the bank substrate, each including a plurality of groove regions arranged next to one another for sub-pixels of different colors; for each of the groove region groups, setting an amount of the ink per unit surface area applied to a subset of groove regions to be smaller than an amount of the ink per unit surface area applied to remaining groove regions in the groove region group; before or after applying the ink to the groove regions, drying ink layers formed in the groove regions by the application of the ink and the solvent.