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We have developed a frequency modulation-type capacitance sensor using amorphous In-Ga-Zn-O (α-IGZO) thin-film transistors (TFTs) for integrated touchpanels. This capacitance sensor consists of a ring oscillator, whose one stage is replaced by a reset transistor, sensing transistor, and sensing electrode. The sensing electrode becomes one terminal when the other terminal is added by finger to form...
Retinal prostheses have been ardently desired to recover the sight sense for sight-handicapped people. In our study, we have proposed an retinal prosthesis using poly-Si thin-film transistors. Particularly in this presentation, we will report a retinal prosthesis of frequency modulation, which is preferable to interconnect neuron cells because the neuron cells transfer the signal by frequency modulation.
We have developed an extraction technique of trap densities in thin films and at insulator interfaces of thin-film transistors (TFTs). These trap densities can be extracted and separated from capacitance-voltage and current-voltage characteristics by numerically calculating , Poisson equation, carrier density equations, and Gauss' law. The outstanding advantages are intuitive understandability and...
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