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직$\cdot$병렬 회로로 금속배선된 포토마스크로 설계된 백색LED 조명램프 제조 공정특성 연구
송상옥,김근주,Song, Sang-Ok,Kim, Keun-Joo 한국반도체디스플레이기술학회 2005 반도체디스플레이기술학회지 Vol.4 No.3
LED lamp was designed by the serial-parallel integration of LED chips in metal-interconnection. The 7 $4.5{\times}4.5\;in^{2}$ masks were designed with the contact type of chrome-no mirror?dark. The white epitaxial thin film was grown by metal-organic chemical vapor deposition. The active layers were consisted with the serial order of multi-quantum wells for blue, green and red lights. The fabricated LED chip showed the electroluminescence peaked at 450, 560 and 600 nm. For the current injection of 20 mA, the operating voltage was measured to 4.25 V and the optical emission power was obtained to 0.7 $\mu$W.