Patent ID: 11963390
Assignee: SAMSUNG ELECTRONICS CO., LTD.
Field: nan (nan)
Classification: CPC H | IPC H

Claim 22:
23. A light-emitting device comprising:
a metal reflective layer;
a second electrode spaced apart from the metal reflective layer;
a first electrode between the metal reflective layer and the second electrode; and
an emission layer which emits a visible light and located between the first electrode and the second electrode, wherein the visible light comprises a light of a first wavelength and a light of a second wavelength,
wherein the metal reflective layer comprises a surface facing the first electrode, a plurality of protrusions protruding from the surface, and a plurality of recesses recessed from the surface, and a height of the surface is lower than the plurality of protrusions and higher than the plurality of recesses,
wherein an area occupied by each of the plurality of protrusions is greater than an area occupied by each of the plurality of recesses in a plan view,
wherein in the plan view the plurality of protrusions and the plurality of recesses are arranged with a repeated pattern,
the metal reflective layer includes a plurality of unit regions, which are adjacent to each other and have a same shape and a same area in the plan view,
each of the unit regions includes a minimum unit of the repeated pattern, and
a total area of the upper surface included in each of the unit regions is greater than a total area of the plurality of recesses included in each of the unit regions in the plan view.