Title :
The study of wireless thin film transistor with micro magnetic induction coupling antenna structure
Author :
Byoung-Ok Jun ; Jong Gu Kang ; Ji-Woong Choi ; Jae Eun Jang
Author_Institution :
Dept. of Inf. & Commun. Eng., Daegu Gyeongbuk Inst. of Sci. & Technol. (DGIST), Daegu, South Korea
Abstract :
Wireless thin film transistor (TFT) structure has been studied to apply to various flexible or wearable devices. For employing micro antenna structure to TFT, the magnetic core (MC) is added to the micro antenna structure to enhance the delivered wireless power and signal due to the decrease of the power efficiency as the scale down of antenna size. The MC is consisted of ZnO nano-wires and Ni, a ferromagnetic material, which is coated on the vertical ZnO nano-wires. Due to the increase of self-resonance frequency with decreasing antenna size, we choose and fabricated a-IGZO TFT, which can have a higher mobility than a-Si TFT. The result enhances the wireless transferred power efficiency of the TFT with micro antenna structure.
Keywords :
ferromagnetic materials; flexible electronics; indium compounds; inductive power transmission; magnetic cores; nanowires; thin film transistors; wearable antennas; wide band gap semiconductors; zinc compounds; InGaZnO; MC; TFT structure; ZnO; antenna size; ferromagnetic material; flexible devices; magnetic core; micromagnetic induction coupling antenna structure; nanowires; self-resonance frequency; wearable devices; wireless power; wireless thin film transistor; wireless transferred power efficiency; Conferences; Nanotechnology;
Conference_Titel :
Nanotechnology (IEEE-NANO), 2014 IEEE 14th International Conference on
Conference_Location :
Toronto, ON
DOI :
10.1109/NANO.2014.6968026
