Light-emitting element array, optical device, optical measurement device, and method for manufacturing light-emitting element array
AssigneeFUJIFILM Business Innovation Corp.
InventorsTakashi Kondo, Michiaki Murata, Junichiro Hayakawa, Takafumi Higuchi
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Abstract
A light-emitting element array includes a substrate, plural light-emitting elements arranged on the substrate, plural constriction grooves being provided in a periphery of each of the plural light-emitting elements, and forming a current constriction layer that constricts a current flowing through a light-emitting layer by oxidizing the light-emitting layer, and a block separation portion that is formed so as to overlap a part of the plural constriction grooves in plan view, and separates the plural light-emitting elements into plural blocks.
Claims19
A light-emitting element array comprising:
- a substrate;
- a plurality of light-emitting elements arranged on the substrate, a plurality of constriction grooves being provided in a periphery of each of the plurality of light-emitting elements and forming a current constriction layer that constricts a current flowing through a light-emitting layer by oxidizing the light-emitting layer;
- and
- a block separation portion that is formed so as to overlap a part of the plurality of constriction grooves in plan view, and separates the plurality of light-emitting elements into a plurality of blocks,
- wherein at least one constriction groove of the plurality of constriction grooves provided in the periphery is provided in common between two adjacent light-emitting elements and overlaps with the block separation portion, such that the part of the plurality of constriction grooves that overlaps the block separation portion in plan view comprises the at least one constriction groove provided in common between the adjacent light-emitting elements.
A method for manufacturing a light-emitting element array, comprising:
- forming a plurality of constriction grooves in a periphery of each of locations where light-emitting elements on a substrate are to be arranged;
- forming a current constriction layer that constricts a current flowing through a light-emitting layer of which a part is exposed within the constriction groove by oxidizing the light-emitting layer;
- forming a block separation portion that separates a plurality of light-emitting elements to be formed into a plurality of blocks;
- and
- forming a plurality of light-emitting elements by forming an emission opening on a current passing region of the current constriction layers,
- wherein the block separation portion is formed to overlap a part of the plurality of constriction grooves in plan view, and
- at least one constriction groove of the plurality of constriction grooves formed in the periphery is provided in common between two adjacent light-emitting elements and overlaps with the block separation portion, such that the part of the plurality of constriction grooves that overlaps the block separation portion in plan view comprises the at least one constriction groove provided in common between the adjacent light-emitting elements.
Dependencies are inferred from the claim text.