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학술지 A Prototype Active-matrix OLED using Graphene Anode for Flexible Display Application
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저자
권오은, 신진욱, 오힘찬, 강찬모, 조현수, 권병화, 변춘원, 양종헌, 이강미, 한준한, 조남성, 윤종혁, 최성진, 박진성, 이현구, 황치선, 문제현, 이정익
발행일
202002
출처
Journal of Information Display, v.21 no.1, pp.49-56
ISSN
1598-0316
출판사
한국정보디스플레이학회
DOI
https://dx.doi.org/10.1080/15980316.2019.1680452
협약과제
19ZB1200, 임플란터블 능동 전자소자 원천기술 개발, 이정익
초록
From the very first time that graphene was used as a transparent electrode for OLED applications, the emergence of active-matrix (AM)-graphene OLED displays has been envisioned. Realizing this expectation, however, turned out to be difficult. Two obstacles are the growth and transfer of a large-area graphene film and the patterning of a graphene film into pixels. To solve these problems, a process of patterning a graphene film without surface contamination was developed. The fabrication of OLED panels by the patterned graphene anode on Gen 2(370 × 470 mm)-sized and flexible substrates was successfully demonstrated. In this work, oxide TFT arrays were combined as a switching backplane, and a pixelated graphene OLED was used as an emissive layer, to realize AM-graphene OLED displays. To explore the technical feasibility of flexible AM-graphene OLED displays, the aforementioned components were formed on a flexible substrate. For commercial-level production, all the processes that were used were chosen to be compatible with the conventional display processes.
KSP 제안 키워드
Flexible substrate, Gen 2, Large-area graphene, OLED display, Oxide TFTs, Patterned graphene, Surface contamination, Technical feasibility, emissive layer(EL), flexible display, graphene anode
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