Organic EL element including banks containing fluorine resin and manufacturing method thereof
View Patent ↗An organic EL display panel having a functional layer with a uniform film thickness is provided. The organic EL display panel of the present invention contains anode electrodes set on the substrate; organic EL layers set on the anode electrodes; line-state banks defining the organic EL layers in a line-state region; second banks defining two or more regions in the line-state region. The line-state banks and the second banks contain a fluorine resin, a fluorine concentration of the fluorine resin gradually changes along a thickness direction of each of the line-state bank and the second bank, and the fluorine concentration at a top of each of the line-state bank and the second bank is higher than the fluorine concentration at a bottom surface of each of the line-state bank and the second bank.
1. An organic EL display panel comprising:
a substrate;
anode electrodes set on the substrate;
an organic EL layer set on the anode electrodes;
first banks which are line-state defining the organic EL layer in a line-state region; and
second banks defining two or more regions in the line-state region;
wherein the heights of the second banks from the substrate are smaller than the heights of the first banks from the substrate,
the first banks and the second banks contain a fluorine resin,
a fluorine concentration of the fluorine resin gradually changes along a thickness direction of each of the first banks,
the fluorine concentration at a top of each of the first banks is higher than the fluorine concentration at a bottom surface thereof,
a fluorine concentration of the fluorine resin gradually changes along a thickness direction of each of the second banks,
the fluorine concentration at a top of each of the second banks is higher than the fluorine concentration at a bottom surface thereof.
2. The organic EL display panel according to claim 1 , wherein the fluorine concentration at the top of each of the first banks is 5 to 10 atom % and the fluorine concentration at the bottom surface of each of the first banks is 0 to 3 atom %.