Premium
18‐2: Oxide TFT LC Oscillators on Glass and Plastic for Wireless Functions in Large‐Area Flexible Electronic Systems
Author(s) -
Afsar Yasmin,
Tang Jenny,
RieutortLouis Warren,
Huang Liechao,
Hu Yingzhe,
SanzRobinson Josue,
Wagner Sigurd,
Verma Naveen,
Sturm James C.
Publication year - 2016
Publication title -
sid symposium digest of technical papers
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.351
H-Index - 44
eISSN - 2168-0159
pISSN - 0097-966X
DOI - 10.1002/sdtp.10638
Subject(s) - thin film transistor , materials science , optoelectronics , oscillation (cell signaling) , transistor , electronic circuit , electrical engineering , nanotechnology , engineering , voltage , layer (electronics) , biology , genetics
High‐frequency signals have important applications in large‐area hybrid systems, enabling efficient wireless transmission of power and information. We report zinc‐oxide thin‐film transistor (ZnO TFT) cross‐coupled LC oscillator circuits on glass and 3.5‐µm‐thick polyimide substrates that achieve oscillation frequencies as high as 35 MHz and 17 MHz, respectively. The TFTs are designed for high unity power‐gain frequency f MAX by minimizing gate resistance and device capacitances. In a resonant oscillator topology, this enables oscillation well above the cutoff frequency f T of the TFTs. Oscillators on plastic benefit from the improved dimensional stability of spin‐cast ultrathin substrates, which allows TFTs on these substrates to have gate resistances and device capacitances comparable to TFTs on glass.