SPUTTERED CATHODE HAVING A HEAVY ALKALINE METAL HALIDE IN AN ORGANIC LIGHT-EMITTING DEVICE STRUCTURE

• Main Authors: RAYCHAUDHURI PRANAB KUMAR, MADATHIL JOSEPH KURU, TANG CHING WAN
• Format: Patent
• Language: English; Korean
• Published: 28.03.2003
• Edition: 7
• Subjects: BASIC ELECTRIC ELEMENTS; ELECTRIC HEATING; ELECTRIC LIGHTING NOT OTHERWISE PROVIDED FOR; ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR; ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR; ELECTRICITY; SEMICONDUCTOR DEVICES

PURPOSE: A sputtered cathode having a heavy alkaline metal halide-in an organic light-emitting device structure is provided to obtain relatively uniform response in the visible wavelength range. CONSTITUTION: An OLED device(100) comprises a substrate(101), an anode(102) formed of a conductive material over the substrate, an emissive layer(105) having an electroluminescent material provided over the anode layer, a buffer layer, provided over the emissive layer and comprising a heavy alkaline metal halide, and a sputtered layer of a metal or metal alloy provided over the buffer layer and selected to function with the buffer layer to inject electrons. 본 발명은 기판, 상기 기판 위에 도전성 물질로 형성된 애노드, 상기 애노드 층 위에 제공된 전기발광 물질을 갖는 발광층, 상기 발광층 위에 제공되고 알칼리성 중금속 할라이드를 포함하는 완충층, 및 상기 완충층과 작용하여 전자를 주입하도록 선택된 금속 또는 금속 합금의 스퍼터링 층을 포함하는 유기 발광 다이오드(organic light-emitting diode, OLED) 디바이스에 관한 것이다.