Multi-color display and its model for a white OLED combined with optical color filters

• Published in: Optik (Stuttgart) Vol. 117; no. 8; pp. 373 - 376
• Main Authors: Wu, Xiaoming, Hua, Yulin, Wang, Zhaoqi, Zheng, Jiajin, Yin, Shougen, Deng, Jiachun, Wu, Kongwu, Songliu, Zhu, Feijian, Niu, Xia
• Format: Journal Article
• Language: English
• Published: Jena Elsevier GmbH 02.08.2006; Elsevier
• Subjects: Applied sciences; Color mixture; Electronics; Exact sciences and technology; Multi-color display; Optical color filters; Optoelectronic devices; Semiconductor electronics. Microelectronics. Optoelectronics. Solid state devices; White organic light-emitting diode; Color mixture; White organic light-emitting diode; Multi-color display; Optical color filters; White light; Organic dye; Display devices; Color display; Experimental study; Quantum yield; Zinc; Optical filter; Naphthacene derivatives; Organic light emitting diodes; Organic light-emitting devices
• ISSN: 0030-4026; 1618-1336
• DOI: 10.1016/j.ijleo.2005.10.010

A bright white organic light-emitting diode (OLED) has been successfully fabricated in which a greenish-white emitting host Bis-(2-(2-hydroxyphenyl) benzothiazole)zinc (Zn(BTZ)2) is doped with an orange-red fluorescent dye 5,6,11,12-tetraphenylnaphthacene (rubrene). The pure white light emission with CIE coordinates of (0.341, 0.334) is achieved at the driving voltage of 20V, and the corresponding luminance and external quantum efficiency are 4000Cd/m2 and 0.63%. On the other hand, the pure red, green, and blue (RGB) emissions are obtained from the white OLED combined well with RGB custom-built optical color filters (CFs) with peaks at 616, 556, and 456nm, respectively. Moreover, based upon the color mixture principles, we build a model of multi-color display mixed by the pure RGB emissions under the controllable bias.