ORGANIC LIGHT EMITTING DISPLAY ENCAPSULATED WITH SILICON-CAVITY AND FABRICATION METHOD THEREOF

PURPOSE: An organic light emitting device and a method for manufacturing the same are provided to achieve improved luminous efficiency and uniformity of light, while reducing manufacturing costs. CONSTITUTION: An organic light emitting device comprises an organic light emitting element having a stru...

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Bibliographic Details
Main Authors JANG, JAE WON, LEE, YUN HUI, KIM, JAE GYEONG, JU, BYEONG GWON, KIM, HUN
Format Patent
LanguageEnglish
Korean
Published 05.02.2004
Edition7
Subjects
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Summary:PURPOSE: An organic light emitting device and a method for manufacturing the same are provided to achieve improved luminous efficiency and uniformity of light, while reducing manufacturing costs. CONSTITUTION: An organic light emitting device comprises an organic light emitting element having a structure in which a glass substrate(1), an anode(2), a hole injection layer(3), a hole transport layer(4), an electron transport layer(5) serving as a light emitting layer, and a cathode(6) are sequentially stacked; and a silicon cavity(8b) having an encapsulation structure for sealing the stacked structure of the organic light emitting element, wherein the silicon cavity has an inclined reflecting surface(9) formed in the silicon cavity. 본 발명은 실리콘 캐비티를 이용하여 봉지화한 유기발광소자에 관한 것이다. 기존의 메탈 캔(metal-can)을 이용한 봉지화(encapsulation)에서 실리콘 캐비티(silicon-cavity)를 이용한 봉지화(encapsulation)를 실시했을 경우, OLED 측면에서 손실되는 광을 실리콘 캐비티(silicon-cavity)의 (111)면이 반사경(mirror)의 역할을 하여 줌으로써 관측 각(observation angle)만큼 전면부로 반사 시켜 손실을 보상함으로써 휘도가 개선됨으로 개구율을 향상 시킬수 있으며, 실리콘 캐비티(Silicon-cavity)와 유기물이 증착된 기판에 접착을 향상시키는 UV-sealant를 질소분위기에서 사용함으로써 산호와 수분을 밀폐하여 OLED 열화를 줄일 수 있다. 또한 실리콘 캐비티(silicon-cavity)의 일괄제조 공정을 통하여 값싸게 대량생산 하는데 적합하다.
Bibliography:Application Number: KR20020043955