Browsing by Author "Yang, Yung-Hsuan"

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Dependence of the Noise Behavior on the Drain Current for Thin Film Transistors
(2014-02-01)
Tai, Ya-Hsiang
;
Chang, Chun-Yi
;
Hsieh, Chung-Lun
;
Yang, Yung-Hsuan
;
Chao, Wei-Kuang
In this letter, a noise formula is newly proposed to calculate the low frequency noise for the three kinds of amorphous silicon, low temperature polycrystalline silicon, and amorphous indium-gallium-zinc oxide (a-IGZO) thin film transistors (TFTs). It is found that the noise behavior of the TFT depends on its drain current in a simple manner. Based on the analysis, the ratios of drain current to the noise level for these TFTs are compared. It reveals that a-IGZO TFT is the best candidate to be used in the active pixel sensor.
High Resolution Active Photo-Sensing Circuit Using Dual-Scan Compensation
(2012-01-01)
Chou, Lu-Sheng
;
Chen, Hua Mao
;
Yang, Cheng-Ta
;
Yang, Yung-Hsuan
;
Tai, Ya-Hsiang
The simplest 2T1C sensing circuit has high aperture ratio in pixel, while it suffers from a severe error owing to the voltage drop on scan bus. In order to solve this issue, a dual-scanning active amplifier sensing circuit is proposed, which can correct the sensing error from 38.5% to 5.7%.