| 학회 | 한국재료학회 |
| 학술대회 | 2010년 봄 (05/13 ~ 05/14, 삼척 팰리스 호텔) |
| 권호 | 16권 1호 |
| 발표분야 | G. Display (LCD, PDP, OLED) Materials(디스플레이 재료) |
| 제목 | Thermal expansion of ITO-PET substrates with varying heat treatments |
| 초록 | The thermal stability of PET-ITO substrate has been issued on the industry of flexible consumer electronics such as conducting films, flexible printed circuit, display panels, interconnections, terminals, etc., which has been more interested in the field engineer of roll-to-roll manufacturing. The flexible products using PET-ITO substrate have been big matter to form fine pattern, pattern alignment and mass-productivity on PET-ITO substrates, which is strongly related with thermal shrinkage and expansion of the PET-ITO substrate. The PET-ITO substrates have been necessary to form many components for mobile applications such as selectively conducting films, flexible printed circuit, display panels, interconnections, terminals, etc. Where they have a main role to enhance their performance of final products such as touch screen, solar cell and so on. However, it has been also known that the PET-ITO layer is not stable during manufacturing process with applied temperatures. Especially the thermal shrinkage or expansion from the process causes to pattern misalignment, pattern damage, pattern failure and crack which is strongly related with failure cost. The past studies were more focused on the subjects such as ITO deposition process or ITO crack propagation rather than thermo-mechanical behavior of ITO layer on PET substrate, where the thermal stability of PET-ITO substrate are a main key parameter decreasing failure cost during roll-to-roll process. In this study, we used bare PET substrates and PET-ITO substrates for analyzing thermal strain quantitatively with the applied temperatures by thermo-mechanical analyzer (TMA). It was observed that the thermal strain of PET-ITO substrate was dependent on that of PET, and also became unstable from the glass temperature of PET. It was certainly said from this result that PET regulated thermal strain of the PET-ITO substrate. |
| 저자 | 이효수1, 방제오1, 채경훈2 |
| 소속 | 1한국생산기술(연), 2LG innotek |
| 키워드 | PET-ITO; Substrate; Thermal; Roll-to-Roll; PET; indium tin oxide; ITO |
