Open AccessColor-by-blue display using blue quantum dot light-emitting diodes and green/red color converting phosphors
Author(s) -
Ji Hye Oh,
Ki-Heon Lee,
Hyosang Yoon,
Heesun Yang,
Young Rag
Publication year - 2014
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.22.00a511
Subject(s) - phosphor , optoelectronics , subpixel rendering , blue light , optics , high color , color rendering index , rgb color model , materials science , full color , gamut , quantum dot , luminous efficacy , backlight , light emitting diode , red color , luminance , cyan , liquid crystal display , computer science , physics , color image , pixel , image processing , nanotechnology , artificial intelligence , layer (electronics) , image (mathematics)
We report a novel full-color display based on the generation of full-color by a highly efficient blue QD-LED light approach, or so called color-by-blue QD-LED display. This newly proposed color-by-blue QD-LED display combines a blue CdZnS/ZnS QD-LED blue subpixel and excitation source with front-emitting green/red phosphor subpixels. It is carefully estimated that the detailed display characteristics as well as full color-conversion and reasonable device efficiency of blue, green, and red satisfy the minimum requirements for display application. Also, we would like to emphasize that the proposed blue, green, and red device shows maximum luminance of 1570, 12920, and 3120 cd/m², respectively, luminous efficiency of 1.5, 12.1, and 2.5 cd/A, respectively, and external quantum efficiency of 6.8, 2.8, and 2.0%, respectively. It is expected that full color generation by color-by-blue QD-LED will lead to further technological advancements in the area of efficient and facile display applications.