Organic LED full color passive-matrix display

A full color 5.2 in 1/4 VGA passive-matrix organic LED display has bet deve loped. The display has 320(x 3)x 240 pixels with an equivalent pixel size o f 0.33 x 0.33 mm(2), white peak luminance of over 150 cd/m(2), and power co nsumption of 6 W. It uses a cathode patterning method with cathode separato rs and an RGB emitters selective deposition method by a high accuracy mask moving system. Passivation film for OLED has been also developed. It turned out that the EL characteristics remained almost identical and the dark spo t growth were negligible for practical use after the storage tests. (C) 200 0 Elsevier Science B.V. All rights reserved.