Browsing by Author "Kuo, Chung-Hung"

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Design and Realization of Delta-Sigma Analog-to-Digital Converter in LTPS Technology
(2009)
Tsai, Chia-Chi
;
Ker, Ming-Dou
;
Li, Yu-Hsuan
;
Kuo, Chung-Hung
;
Li, Chun-Huai
A delta-sigma analog-to-digital (A/D) converter designed and implemented with the thin-film transistors (TFTs) on glass substrate is proposed, which has been successfully verified in a 3-mu m low-temperature polycrystalline silicon (LTPS) process. The experimental results have shown that the probability in the bit stream of the digital output from the delta-sigma modulator is correctly fit in the analog input voltage ratio. Such a bit stream can be converted into 8-bit digital code successfully under the operation voltage of 10V with thin film transistors (TFTs) on the glass substrate. The proposed delta-sigma AID converter can be further used to achieve the precise analog circuits for System-on-Panel (SOP) or System-on-Glass (SOG) applications, which enables the analog circuits to be integrated in the active matrix LCD (AMLCD) panels.
Design of Bandgap Voltage Reference Circuit with all TFT Devices on Glass Substrate in a 3-mu m UPS Process
(2008)
Lu, Ting-Chou
;
Ker, Ming-Dou
;
Zan, Hsiao-Wen
;
Kuo, Chung-Hung
;
Li, Chun-Huai
A bandgap voltage reference (BGR) circuit designed with the low-temperature polycrystalline silicon (LTPS) thin-film transistors (TFTs) on glass substrate is proposed, which has been successfully verified in a 3-mu m LTPS process. The experimental results have shown that the measured temperature coefficient of the new proposed bandgap voltage reference circuit is around 195 ppm/degrees C under the supply voltage of 10V. The proposed bandgap voltage reference circuit can be applied on precise analog circuits for System-on-Panel (SoP) or System-on-Glass (SoG) applications.