| About this Abstract |
| Meeting |
2021 TMS Annual Meeting & Exhibition
|
| Symposium
|
Advanced Functional and Structural Thin Films and Coatings
|
| Presentation Title |
Key Mechanical Test Methods to Characterize Optically Clear Adhesives |
| Author(s) |
Mobin Yahyazadehfar, Aref Samadi, Leopoldo Carbajal, Mark Lamontia |
| On-Site Speaker (Planned) |
Mobin Yahyazadehfar |
| Abstract Scope |
Flexible Cover Window is a multi-layer stack that is designed to protect foldable displays from impact and scratch. In this design, rigid polymer films are co-extruded or bonded together using an Optically Clear Adhesive (OCA). While being very tacky, OCAs are usually ultra-soft martials (E< 10 MPa) that can sustain large shear strains (>500%). In addition to strong adhesion, an OCA can provide several other mechanical benefits. For example, due to its low modulus, an OCA layer can prompt splitting the neutral axes of the rigid layers during bending which reduces the maximum bending strain and allows tight bending radii. In addition, OCAs can enhance the impact performance of the cover window through absorbing part of the applied mechanical energy during such loading conditions. In this study, we introduced key mechanical test methods to identify suitable OCA candidates for flexible phone Cover window. |
| Proceedings Inclusion? |
Planned: |