江簡富臺灣大學：電機工程學研究所李宜音Li, I-YinI-YinLi2007-11-262018-07-062007-11-262018-07-062007http://ntur.lib.ntu.edu.tw//handle/246246/53035針對場序式顯示器進行畫素分析，並與傳統式顯示器比較，提出場序式顯示器在畫素電路設計上之關鍵因素。並就不同尺寸之顯示器進行畫素電路設計，進一步分析各設計參數在不同條件下之影響。 此外本論文亦提出一新型省電設計，利用液晶顯示器之反轉需求，以電晶體接通畫素顯示電極到地，回收使用電荷以達到節省功率及快速充放電的效果。Design constraints on field-sequential color (FSC) LCD are proposed and compared with conventional color filter (CF) LCD. Application of these constraints to design LCD screen of different sizes is demonstrated. A new power saving design using charge recycling technique on the pixel level is proposed. Design constraints are derived and design examples are demonstrated. Compared with conventional charging methods, this method consumes only half the power, the charging speed is faster and the aperture ratio is similar.Abstract i Table of Contents ii List of Figures iv List of Tables vi Acknowledgment vii 1 Design Constraints on FSC LCD 1 1.1 Introduction . . . . . . . . . . . . . . . . . . . 1 1.2 Models of Pixel and Signal Line . . . . . .. . . . . 3 1.3 Constraints on Subpixel Design . . . . . . . . . . . 6 1.3.1 Charging Phase . . . . . . . . . . . . . . . . . . 6 1.3.2 Holding Phase . . . . . . . . . . . . .. . . . . . 7 1.3.3 Asymmetric Kickback . . . . .. . . . . . . . . . . 8 1.3.4 Delay . . . . . . . . . . . . . . .. . . . . . . . 9 1.4 Pixel Design for FSC LCD . . . . . . . . . . . . . 10 1.5 Assessment of Different Screen Sizes . . . . . . . 13 1.5.1 Operation Window . . . . .. . . . . . . . . . . . 14 1.5.2 Aperture Ratio . . . . . . . . . . . . . . . . . 19 1.5.3 Power Consumption . . . . . . . . . . . . . . . . 21 1.6 Conclusions . . . . . . . . . . . . . . . . . . . . 21 2 Charge Recycling Method on Pixel Level 23 2.1 Introduction . . . .. . . . . . . . . . . . . . . . 23 2.2 Circuit Models of Pixel and Signal Line . . . . . . 24 2.3 Constraints on Subpixel Design . . . . . . . . . . 28 2.3.1 Charging Phase . . . . . . .. . . . . . . . . . . 29 2.3.2 Holding Phase . . . . . . . . . . . . . . . . . . 29 2.3.3 Asymmetric Kickback . . . . . . . . . . . . . . . 30 2.3.4 Delay . . . . . . . . . . . . . . . . . . . . . . 32 2.4 Dual TFTMethod . . . . . . . . . . . . . . . . . . 33 2.5 Design with DTFT . . . . . .. . . . . . . . . . . . 36 2.5.1 Charging Phase . . .. . . . . . . . . . . . . . . 36 2.5.2 Holding Phase . . . . . . . . . . . . . . . . . . 38 2.5.3 Asymmetric Kickback . . . . . . . . . . . . . . . 38 2.5.4 Delay . . . . . . . . . . . . . . . . . . . . . . 38 2.5.5 Operation Window . . . . . . . . . . . . . . . . 40 2.5.6 Aperture Ratio . . . . . . . . . . . . . . . . . 41 2.5.7 Power Consumption . . . . . . . . . . . . . . . . 42 2.6 Conclusions . . . . . . . . . . . . . . . . . . . . 42en-US液晶顯示器場效電晶體省電高密度電視Liquid crystal displayThin film transistorspower demandTV displaysHDTVthesis