Using metallic film perforated with a subwavelength periodic structure, a novel concept of a color filter for multicolor organic light-emitting diode (OLED) display is proposed. Based on the phase-matching condition for extraordinary optical transmission, three primary color emissions can be obtained by optimizing the structure’s periodicity. Two periodic structures, an array of one-dimensional periodic slits and a two-dimensional periodic hole array, are studied using coupled mode theory. Also, the feasibility of applying these structures as color filters is analyzed. The relative intensity at the unwanted wavelength, which is generated by higher resonant transmission, had been calculated to eliminate its effect on the purity of these filters. It is important that this type of color filter simultaneously solves the low emission efficiency problem for OLEDs with the aid of enhanced transmission of metal film.
© 2008 Optical Society of AmericaFull Article | PDF Article
Hong-Shik Lee, Yeo-Taek Yoon, Sang-Shin Lee, Sang-Hoon Kim, and Ki-Dong Lee
Opt. Express 15(23) 15457-15463 (2007)
Weiwei Zhang, Hongyu Liu, and Runguang Sun
Opt. Express 17(10) 8005-8011 (2009)
Sang-Hwan Cho, Jeong Rok Oh, Hoo Keun Park, Hyoung Kun Kim, Yong-Hee Lee, Jae-Gab Lee, and Young Rag Do
Opt. Express 18(2) 1099-1104 (2010)