Thin-film transistor-driven vertically stacked full-color organic light-emitting diodes for high-resolution active-matrix displays.

ABSTRACT: Thin-film transistor (TFT)-driven full-color organic light-emitting diodes (OLEDs) with vertically stacked structures are developed herein using photolithography processes, which allow for high-resolution displays of over 2,000 pixels per inch. Vertical stacking of OLEDs by the photolithography process is technically challenging, as OLEDs are vulnerable to moisture, oxygen, solutions for photolithography processes, and temperatures over 100 °C. In this study, we develop a low-temperature processed Al₂O₃/SiN_x bilayered protection layer, which stably protects the OLEDs from photolithography process solutions, as well as from moisture and oxygen. As a result, transparent intermediate electrodes are patterned on top of the OLED elements without degrading the OL

SUBMITTER: Choi S 

PROVIDER: S-EPMC7264127 | biostudies-literature | 2020 Jun

REPOSITORIES: biostudies-literature