반도체 발광 소지와 형광체를 함유하는 파장 변환층을 조합하여 원하는 발광색의 혼합광을 생성하는 반도체 발광 장치, 및 이 반도체 발광 장치를 포함하는 차량용 램프. 파장 변환층은, 발광 동작시의 발광층 내의 전류 밀도의 불균일성에 기인하는 혼합광의 광 취출면에 걸친 색도차가 감소하도록 반도체 발광 소자의 발광 동작시의 전류 밀도가 상대적으로 높은 영역을 커버하는 부분과 전류 밀도가 상대적으로 낮은 영역을 커버하는 부분에서 상이한 파장 변환 특성들을 각각 갖는다.
A semiconductor light emitting device which produces mixed light of a desired emission color by a combination of a semiconductor light emitting element and a wavelength converting layer containing a fluorescent substance, and a vehicle lamp including the semiconductor light emitting device. The wavelength converting layer has different wavelength conversion characteristics respectively at its portion covering an area of relatively high current density at light emission operation of the semiconductor light emitting element and at its portion covering an area of relatively low current density so as to reduce chromaticity difference over the light extraction surface of the mixed light due to non-uniformity of current density in the light emitting layer at light emission operation.
SEMICONDUCTOR LIGHT EMITTING DEVICE AND VEHICLE LAMP
반도체 발광 장치 및 차량용 램프
2019-02-07
Patent
Elektronische Ressource
Koreanisch
IPC: | H01L Halbleiterbauelemente , SEMICONDUCTOR DEVICES / B60Q ARRANGEMENT OF SIGNALLING OR LIGHTING DEVICES, THE MOUNTING OR SUPPORTING THEREOF OR CIRCUITS THEREFOR, FOR VEHICLES IN GENERAL , Anordnung von Signal- oder Beleuchtungsvorrichtungen, deren Einbau oder Halterung oder deren Schaltkreise bei Fahrzeugen allgemein |
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