International Display Workshops General Incorporated Association

11:50 AM - 12:10 PM

[FMC5-4] Fine Patterning of Cu and NiTi Metal Electrode by Reactive Proton Assisted Etching, with Application to High Resolution Stretchable AMOLED/AMLED

*MunPyo Hong1, Minyoung Kim1, Donghoon Kim1, Jin Nyoung Jang2, Jong Hwa Lee2, Sangheon Lee2, Chiwoo Kim2, Sang-Gab Kim3 (1. Korea University (Korea), 2. APS Research Corporation (Korea), 3. Samsung Display (Korea))

High Resolution, Stretchable, Copper, Nitinol, Dry Etching

https://doi.org/10.36463/idw.2023.0359

A fine patterning process is proposed for fabricating lower resistance-higher elastic bus-lines on stretchable TFT backplanes. The process involves the use of multi-layered electrodes comprising highly conductive Cu and super-elastic NiTi thin films, with line widths of <1 µm. To achieve precise and clean dry etching of these metal bus-lines, a novel dry etching process is developed, employing reactive proton assistance reaction at 50 ℃