P-196L: Late-News Poster: Micro-Cavity Design of RGBW AMOLED for Wide Color Gamut and Low Color Shift

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...

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Veröffentlicht in:SID International Symposium Digest of technical papers 2009-06, Vol.40 (1), p.1752-1755
Hauptverfasser: Lee, Baek-woon, Hwang, Young In, Lee, Hae-yeon, Kim, Sungchul, Kim, Sangsoo, Ju, Young-gu
Format: Artikel
Sprache:eng
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Zusammenfassung: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.
ISSN:0097-966X
2168-0159
DOI:10.1889/1.3256676