SPIE Photonics West 2020, San Francisco, USA

SPIE Photonics West 2020, San Francisco, USA

February 1 - 6, 2020 (Sun. - Thur.), Moscone Centor

Tandem structured 3-color micro-polymer light-emitting diodes (μ-PLEDs)

Keun-Yeong Choi, Han Wool Park, Do Hwan kim, and Hojin Lee

Abstract

  In this study, we proposed a tandem structured 3-color micro-patterned polymer light-emitting diodes (μ-PLEDs) for super high-resolution organic light-emitting diode (OLED) micro displays. The proposed 3-color polymer light-emitting diodes consisted of red, green, and blue colored polymers patterned down to 20 μm. For the tandem structure, we adopted the recently developed sol-gel process to obtain the orthogonality of organic semiconductor against the solvents and chemicals so that we could apply the standard photolithography and dry-etch process to achieve micron-size patterns of light-emitting polymers. Experimental results showed that we could achieve the 3 distinct color emissions from our tandem PLEDs fabricated by the standard process, the which was confirmed by EL spectrum and CIE chromaticity diagram.