An active matrix-type stretchable display is realized by overlay-aligned transfer of inorganic light-emitting diode (LED) and single-crystal Si thin film transistor (TFT) with roll processes. The roll-based transfer enables integration of heterogeneous thin film devices on a rubber substrate while preserving excellent electrical and optical properties of these devices, comparable to their bulk properties. The electron mobility of the integrated Si-TFT is over 700 cm2 V−1 s−1, and this is attributed to the good interface between the Si channel and the thermally grown SiO2 insulator. The light emission properties of the LED are of wafer quality. The resulting display stably operates under tensile strains up to 40%, over 200 cycles, demonstrating the potential of stretchable displays based on inorganic materials.
Bibliographical noteFunding Information:
This work was supported by the National Creative Research Laboratory (2015R1A3A2066337) through the National Research Foundation of Korea (NRF), the Research Program of Korea Institute of Machinery & Materials (SC 1170), and Samsung Display.
All Science Journal Classification (ASJC) codes
- Materials Science(all)
- Condensed Matter Physics