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P‐115: Patternable and Ultra‐Thin Quantum Dot Color Conversion Layer for Mini‐Sized White Light LED Backlight
Author(s) -
Chen Chih-Jung,
Lien Jiun-Yi,
Chiang Ray-Kuang
Publication year - 2019
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 - 10.1002/sdtp.13276
Subject(s) - photoresist , backlight , materials science , optoelectronics , photolithography , light emitting diode , quantum efficiency , quantum dot , luminance , microfabrication , layer (electronics) , optics , nanotechnology , liquid crystal display , fabrication , physics , medicine , alternative medicine , pathology
Thinner, lighter, and cost‐effective white light mini‐LED (WLED) backlight package were developed via microfabrication of the quantum dot‐photoresist (QDPR) film onto the blue flip‐chip LEDs. By mixing green and red giant QDs with negative photoresist for QDPR used in the photolithography process, QD‐polymer films as thin as 4 µm with the light conversion efficiency as high as 55% can be reached. The characterization results show that the WLED has CIE color coordinates of (0.285, 0.289), and a luminance efficiency of 80 lm/W with colorimetric performance higher than 90% of Rec. 2020, which continues the outperformance of QDs in Mini‐LED BLU applications.