Organic EL element and organic EL element manufacturing method having an auxiliary electrode includes a linear portion and a curved portion
View Patent ↗An organic EL panel includes a first substrate, a first electrode disposed on the first substrate, an organic layer including a light emitting layer and disposed on the first electrode, a second electrode disposed on the organic layer, and an auxiliary electrode stacked on the first electrode. The auxiliary electrode includes a linear portion and a curved portion, and the curved portion has a greater line width than the linear portion.
1. An organic electroluminescent (EL) element comprising:
a substrate;
a first electrode disposed on the substrate;
an organic layer including a light emitting layer and disposed on the first electrode;
a second electrode disposed on the organic layer; and
an auxiliary electrode stacked on the first electrode,
wherein the auxiliary electrode includes a linear portion and a curved portion, and
the curved portion has a greater line width than the linear portion.
2. The organic EL element according to claim 1 ,
wherein the curved portion is formed in proximity to a peripheral edge of the first electrode.
3. The organic EL element according to claim 1 ,
wherein the curved portion is formed in a central portion of the first electrode.
4. The organic EL element according to claim 1 ,
wherein the auxiliary electrode has a line width that continuously increases from the linear portion to the curved portion.
5. An organic EL element manufacturing method comprising:
forming a first electrode on a substrate;
stacking an auxiliary electrode on the first electrode, the auxiliary electrode including a linear portion and a curved portion;
forming an organic layer on the first electrode, the organic layer including a light emitting layer; and
forming a second electrode on the organic layer,
wherein in the forming of the auxiliary electrode, a liquid conductive material is applied so that the curved portion has a greater line width than the linear portion.
6. The organic EL element manufacturing method according to claim 5 ,
wherein the curved portion and the linear portion are written by ejecting the liquid conductive material from a nozzle, and
a writing speed of the liquid conductive material when writing the curved portion is lower than a writing speed of the liquid conductive material when writing the linear portion.
7. The organic EL element manufacturing method according to claim 5 ,
wherein the curved portion and the linear portion are written by ejecting the liquid conductive material from a nozzle, and
an amount of the liquid conductive material ejected when writing the curved portion is greater than an amount of the liquid conductive material ejected when writing the linear portion.