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학술지 Light Diffusing Effects of Nano and Microstructures on OLED with Microcavity
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저자
조두희, 신진욱, 주철웅, 이종희, 박승구, 문제현, 조남성, 추혜용, 이정익
발행일
201410
출처
Optics Express, v.22 no.21, pp.A1507-A1518
ISSN
1094-4087
출판사
Optical Society of America(OSA)
DOI
https://dx.doi.org/10.1364/OE.22.0A1507
협약과제
14PB1200, 에너지 절감을 위한 외광효율이 최대 100% 향상된 OLED용 광추출 기초 원천기술 개발, 이정익
초록
We examined the light diffusing effects of nano and microstructures on microcavity designed OLEDs. The results of FDTD simulations and experiments showed that the pillar shaped nano-structure was more effective than the concave micro-structure for light diffusing of microcavity OLEDs. The sharp luminance distribution of the microcavity OLED was changed to near Lambertian luminance distribution by the nanostructure, and light diffusing effects increased with the height of the nanostructure. Furthermore, the nano-structure has advantages including light extraction of the substrate mode, reproducibility of manufacturing process, and minimizing pixel blur problems in an OLED display panel. The nanostructure is a promising candidate for a light diffuser, resolving the viewing angle problems in microcavity OLEDs.
KSP 제안 키워드
Display Panel, FDTD simulation, Manufacturing processes, Nano and microstructures, Nano-structures, OLED display, light extraction, luminance distribution, structural characterization(Microstructure), viewing angle