Late-news poster: Micro-cavity design of rgbw amoled for wide color gamut and low color shift

Baek Woon Lee, Young In Hwang, Hae Yeon Lee, Sungchul Kim, Sangsoo Kim, Young Gu Ju

Research output: Contribution to journalConference articlepeer-review

5 Scopus citations

Abstract

Previously, we reported two optical structures for bottom-emitting white OLED, exhibiting wide color gamut (> 100% NTSC) and high (> 40%) transmission through color filter. The panels employed RGBW color system for efficiency. The color shifts at oblique angles for the individual R, G, B, and R+G+B were maintained below Δu’v’ < 0.02 @ 60°. However, the colors produced by the combination of R/G/B subpixels and W subpixels exhibit large color shift when viewed at oblique angles because the luminance profiles, as a function of viewing angle, of the R/G/B which employ strong resonance, and the W which has weak resonance, are very different. In this report, we present a novel optical architecture for the W-subpixel. The color shift for the W-subpixel was reduced from Δu’v’ = 0.059 to 0.026 and the luminance profile was much closer to those of R/G/B subpixels. The efficiency of the W-subpixel with the new structure was on the same level as that of the conventional, plain, weak-resonance structure.

Original languageEnglish
Pages (from-to)1752-1755
Number of pages4
JournalDigest of Technical Papers - SID International Symposium
Volume40
Issue number1
DOIs
StatePublished - 2009
Event2009 Vehicles and Photons Symposium - Dearborn, MI, United States
Duration: 15 Oct 200916 Oct 2009

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