Premium
Stretchable Active Matrix Inorganic Light‐Emitting Diode Display Enabled by Overlay‐Aligned Roll‐Transfer Printing
Author(s) -
Choi Minwoo,
Jang Bongkyun,
Lee Wonho,
Lee Seonwoo,
Kim Tae Woong,
Lee HakJoo,
Kim JaeHyun,
Ahn JongHyun
Publication year - 2017
Publication title -
advanced functional materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 6.069
H-Index - 322
eISSN - 1616-3028
pISSN - 1616-301X
DOI - 10.1002/adfm.201606005
Subject(s) - materials science , active matrix , thin film transistor , optoelectronics , transfer printing , wafer , light emitting diode , flexible display , electroluminescent display , thin film , diode , electroluminescence , nanotechnology , composite material , layer (electronics)
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 cm 2 V −1 s −1 , and this is attributed to the good interface between the Si channel and the thermally grown SiO 2 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.