Light-emitting element, device, and manufacturing method including a charge injection layer having a recess for suppressing uneven luminance

摘要

A hole injection layer and a light-emitting layer are laminated between a first electrode and a second electrode of a light emitter. A bank defines an area in which the light-emitting layer is to be formed. In the area defined by the bank, a hole injection layer has a recess in an upper surface thereof. An upper peripheral edge of the recess is covered with a part of the bank.

主权项

1. A light-emitter, comprising:
a first electrode; a laminate disposed on the first electrode that includes a charge injection transport layer and a light-emitting layer; a second electrode disposed on the laminate; and banks that define an area in which the light-emitting layer is to be formed, wherein the charge injection transport layer has a recess in an upper surface of the charge injection transport layer, the recess including a bottom surface and inner side surfaces which interconnect the bottom surface and outer portions of the upper surface of the charge injection transport layer in which the recess is not formed, and the banks are directly on at least a part of each of the outer portions of the upper surface of the charge injection transport layer in which the recess is not formed, and directly on at least a portion of each of the inner side surfaces of the recess.