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68.2: Achieving High Color Gamut with Microcavity on White OLED
Author(s) -
Lee Sungsoo,
Chu Changwoong,
Chung Jinkoo,
Lee Joohyeon,
Choi Junho,
Ha Jaekook,
Kim Seongmin,
Choi Joonhoo,
Jung Jaehoon,
Kim Chiwoo,
Lee Jinseok
Publication year - 2008
Publication title -
sid symposium digest of technical papers
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.351
H-Index - 44
eISSN - 2168-0159
pISSN - 0097-966X
DOI - 10.1889/1.3069312
Subject(s) - gamut , ntsc , materials science , color filter array , liquid crystal display , oled , color gel , optoelectronics , pixel , rgb color model , high color , optics , amoled , computer science , computer vision , physics , color image , image processing , active matrix , image (mathematics) , telecommunications , transmission (telecommunications) , thin film transistor , nanotechnology , layer (electronics)
Abstract We have demonstrated bottom‐emission white OLED devices, which have RGBW sub‐pixel and high color gamut over 100% NTSC ratio with White‐to‐Green microcavity technique. Large‐Sized AMOLED TV has to show very high quality display images to overcome LCD TV. However, the R, G and B colors filtered by LCD color‐filters are not saturated enough. Especially, green emission peak is very broad because blue emission peak is not removed perfectly by green color‐filter. Therefore, we fabricate white OLED having saturated green color by adapting microcavity technique. The results of green pixels are (0.211, 0.723) in color coordinates, and the efficiency of green is 15.4 cd/A, which was (0.217, 0.600) and 7.5 cd/A. And the color gamut with microcavity reaches more than 100% NTSC.