US 12,408,493 B2
Light-emitting element including first semiconductor layer having exposed portion with first region and second regions
Kentaro Watanabe, Anan (JP)
Assigned to NICHIA CORPORATION, Anan (JP)
Filed by NICHIA CORPORATION, Anan (JP)
Filed on May 23, 2022, as Appl. No. 17/750,783.
Claims priority of application No. 2021-088186 (JP), filed on May 26, 2021; and application No. 2021-202182 (JP), filed on Dec. 14, 2021.
Prior Publication US 2022/0384685 A1, Dec. 1, 2022
Int. Cl. H10H 20/831 (2025.01); H10H 20/857 (2025.01)
CPC H10H 20/8312 (2025.01) [H10H 20/857 (2025.01)] 19 Claims
OG exemplary drawing
 
1. A light-emitting element comprising:
a substrate;
a semiconductor layered body comprising:
a first semiconductor layer of a first conduction type disposed on the substrate,
an active layer disposed on the first semiconductor layer, and
a second semiconductor layer of a second conduction type disposed on the active layer,
wherein a portion of the first semiconductor layer is exposed from the active layer and the second semiconductor layer;
a first electrode disposed on the exposed portion of the first semiconductor layer and electrically connected to the first semiconductor layer;
a second electrode disposed on the second semiconductor layer and electrically connected to the second semiconductor layer;
a first insulating layer covering the first electrode and the second electrode and having a first opening above the first electrode and a second opening above the second electrode;
a first pad electrode disposed on the first insulating layer and electrically connected to the first electrode through the first opening; and
a second pad electrode disposed on the first insulating layer and electrically connected to the second electrode through the second opening; wherein:
the exposed portion of the first semiconductor layer comprises, in a top view:
a first region lying between the first pad electrode and the second pad electrode and extending in a first direction parallel to an upper surface of the substrate, and
a plurality of second regions extending from the first region in a second direction intersecting the first direction, the second direction being a direction from the first region toward the first pad electrode;
the first electrode is disposed on the first region and the plurality of second regions; and
the first pad electrode covers the active layer at locations between the plurality of second regions in a top view.