LIGHT-EMITTING ELEMENT

LIGHT-EMITTING ELEMENT

PROBLEM TO BE SOLVED: To provide a light-emitting element which can increase optical output from the chip surface while minimizing increase in forward voltage.SOLUTION: The light-emitting element comprises: a light-emitting layer; a first conductivity type layer provided on the light-emitting layer;...

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Hauptverfasser: TANAKA AKIRA, MATSUNAGA NORIHIKO, KONDO KATSUAKI
Format: Patent
Sprache:eng
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BASIC ELECTRIC ELEMENTS
ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR
ELECTRICITY
SEMICONDUCTOR DEVICES
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creator TANAKA AKIRA
MATSUNAGA NORIHIKO
KONDO KATSUAKI
description PROBLEM TO BE SOLVED: To provide a light-emitting element which can increase optical output from the chip surface while minimizing increase in forward voltage.SOLUTION: The light-emitting element comprises: a light-emitting layer; a first conductivity type layer provided on the light-emitting layer; a first electrode provided on the first conductivity type layer; a second conductivity type layer provided under the light-emitting layer and having a thickness of t1(μm); a current block layer provided in contact with a partial region of the surface of the second conductivity type layer on the side opposite to the light-emitting layer while projecting the outer edge by a length of x1(μm) from the outer edge of the first electrode; and a second electrode which comes into contact with the surface of the current block layer on the side opposite to the second conductivity type layer and a region of the surface of the second conductivity type layer not coming into contact with the current block layer and capable of reflecting light emitted from the light-emitting layer. Assuming the sum of thicknesses of the first conductivity type layer, the light-emitting layer and the second conductivity type layer is t2(μm), following formula is satisfied.
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subjects BASIC ELECTRIC ELEMENTS
ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR
ELECTRICITY
SEMICONDUCTOR DEVICES
title LIGHT-EMITTING ELEMENT
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