평판 유리로 봉인된 유-무기 보호 박막을 갖는 OLED 봉지 방법 = Encapsulation Method of OLED with Organic-inorganic Protective Thin Films Sealed with Flat Glass

다국어 초록 (Multilingual Abstract)

To study encapsulation method for large-area organic light emitting diodes (OLEDs), red emitting OLEDs were fabricated, on which $Alq_3$ as organic buffer layer and LiF and Al as inorganic protective layers were deposited to protect the damage of OLED by epoxy. And then the OLEDs were attached to flat glass by printing method using epoxy. The basic structure of OLED doped with rubrene of 1 vol.% as emitting layer is ITO(150 nm) / 2-TNATA(50 nm) / ${\alpha}$-NPD(30 nm) / $Alq_3$:Rubrene(30 nm) / $Alq_3$(30 nm) / LiF(0.7 nm) / Al(100 nm). In case of depositing $Alq_3$, LiF and Al and then attaching of flat glass onto OLED, current density, luminance, efficiency and driving voltage were not changed and lifetime was increased according to thickness of Al as inorganic protective layers. The lifetime of OLED/$Alq_3$/LiF/Al_4/glass structure was 139 hours increased by 15.8 times more than bare OLED of 8.8 hours and 1.6 times more than edge sealed OLED of 54.5 hours.

참고문헌 (Reference)

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6 박민경, "평판 유리로 봉인된 다층 무기 박막을 갖는 OLED 봉지 방법" 한국전기전자재료학회 24 (24): 905-910, 2011

7 임병관, "청색 활성제의 첨가 형상 변화에 따른 백색 OLED의 발광 특성" 한국전기전자재료학회 24 (24): 486-490, 2011