LIGHT-EMITTING DEVICE

• Main Authors: IKEDA TADAAKI, YOKOTE YUKIKO
• Format: Patent
• Language: English; Japanese
• Published: 08.04.2021
• Subjects: BASIC ELECTRIC ELEMENTS; BLASTING; ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR; ELECTRICITY; FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMSTHEREOF; HEATING; LIGHTING; MECHANICAL ENGINEERING; NON-PORTABLE LIGHTING DEVICES; OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS; OPTICS; PHYSICS; SEMICONDUCTOR DEVICES; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHERARTICLES, NOT OTHERWISE PROVIDED FOR; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLEEXTERIORS; WEAPONS

To provide a light-emitting device with high color mixing.SOLUTION: A light-emitting device 1 includes a first light emitting element 21, a second light emitting element 22, and a first wavelength conversion member 31. The first light emitting element 21 emits light having a first peak wavelength λ1. The first light emitting element 21 has a first A surface 21A in which a first n-side electrode 21n and a first p-side electrode 21p are arranged, and a first B surface 21B located on the opposite side of the first A surface 21A. The second light emitting element 22 emits light having a second peak wavelength λ2, which is longer than the first peak wavelength λ1. The second light emitting element 22 has a second A surface 22A in which a second n-side electrode 22n and a second p-side electrode 22p are arranged, and a second B surface 22B located on the opposite side of the second A surface 22A and facing the first B surface 21B. The first wavelength conversion member 31 is located between the first B surface 21B and the second B surface 22B.SELECTED DRAWING: Figure 4 【課題】混色性が高い発光装置を提供する。【解決手段】発光装置１は、第１発光素子２１と、第２発光素子２２と、第１波長変換部材３１と、を備える。第１発光素子２１は、第１ピーク波長λ１の光を出射する。第１発光素子２１は、第１ｎ側電極２１ｎ及び第１ｐ側電極２１ｐが配置された第１Ａ面２１Ａと、第１Ａ面２１Ａの反対側に位置する第１Ｂ面２１Ｂと、を有する。第２発光素子２２は、第１ピーク波長λ１よりも長い第２ピーク波長λ２の光を出射する。第２発光素子２２は、第２ｎ側電極２２ｎ及び第２ｐ側電極２２ｐが配置された第２Ａ面２２Ａと、第２Ａ面２２Ａの反対側に位置し第１Ｂ面２１Ｂと対向する第２Ｂ面２２Ｂと、を有する。第１波長変換部材３１は、第１Ｂ面２１Ｂと第２Ｂ面２２Ｂの間に位置する。【選択図】図４