A Low-Power TFT-LCD Column Driver Design for Dot-Inversion Method(<Special Section>Analog Circuit Techniques and Related Topics)
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概要
- 論文の詳細を見る
A novel multi-phase charge-sharing technique is proposed for the dot-inversion method to reduce AC power consumption of the TFT-LCD column driver without requiring any external capacitor for charge conservation. Simple and easy-to-control circuitry is applied in the proposed method, and the power saving efficiency depends on number of charge phases. Increasing the number of charge phases, the saving power efficiency is also raised. Excluding power dissipation of switches, the power saving efficiency is up to 75% theoretically with infinite phases. For previous work, the maximum power saving efficient is 50% without external capacitor. The HSPICE simulation results including power dissipation of all switches show that the proposed method with seven charge phases (eight-column lines as one group) decreases the power consumption of 23-68% and 10-18%, respectively, compared with original circuit (without any low-power scheme) and previous low-power charge-recycling works.
- 社団法人電子情報通信学会の論文
- 2004-02-01
著者
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Guo Pao-lin
Department Of Electrical Engineering Dayeh University
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YANG Shao-Sheng
Laboratory for Reliable Computing (808R), Department of Electrical Engineering, National Tsing Hua U
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CHANG Tsin-Yuan
Laboratory for Reliable Computing (811R), Department of Electrical Engineering, National Tsing Hua U
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HONG Jin-Hua
Department of Electrical Engineering, National Kaohsiung University
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Hong Jin-hua
Department Of Electrical Engineering National Kaohsiung University
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Chang Tsin-yuan
Laboratory For Reliable Computing (811r) Department Of Electrical Engineering National Tsing Hua Uni
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Yang Shao-sheng
Laboratory For Reliable Computing (808r) Department Of Electrical Engineering National Tsing Hua Uni