Premium
L‐2: Late‐News Paper : The RGBW Advantage for AMOLED
Author(s) -
Lee Baekwoon,
Park Kyongtae,
Arkhipov Alexander,
Shin Sungtae,
Chung Kyuha
Publication year - 2007
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 - 10.1889/1.2785572
Subject(s) - rgb color model , computer science , computer graphics (images) , amoled , oled , subpixel rendering , artificial intelligence , computer vision , pixel , active matrix , thin film transistor , materials science , layer (electronics) , composite material
Abstract The combination of white OLED and color filter (CF) is the most mature solution for making large‐area AMOLEDs. The system can benefit from introducing a white subpixel. We compared the power efficiencies of RGB and RGBW system. As a basis for the comparison, we also propose a reference video called FC in which every color point in the cubic RGB space has the equal probability of appearance. We found that the RGBW system has 16.7% lower power consumption and 23% lower current stress (thus longer lifetime) for the reference video. We also analyzed various kinds of videos from DVD movies, HDTVs and IT graphics to find that in these actual video materials, there is much more utilization of white so that the power consumption is roughly a half of that for the FC video. The reduction is so significant that the W OLED + RGBW CF system has 60% lower power consumption than the RGB CF system and only 50% higher power consumption than the RGB OLED (no CF).