液晶显示驱动电路中Fibonacci型电荷泵单元  

A Fibonacci-like Charge Pump Cell for LCD Driver

作　　者：郁海蓉[1] 陈志良[1] 

机构地区：[1]清华大学微电子所,北京100084

出　　处：《电子学报》2002年第5期753-756,共4页Acta Electronica Sinica

摘　　要：本文中所设计的电荷泵将用于手机液晶显示驱动模块中 .通过对Fibonacci型电荷泵上升时间的估算 ,对减小上升时间和动态功耗进行折中考虑 ,本文提出优化开关频率的方法 .用 1 2 μmCMOS双阱工艺参数对所设计的电荷泵进行模拟 ,结果表明这个电荷泵具有较快的上升速度和较高的效率 .通过提高VGS电平和保证开关管的衬底始终接在最高电位上 ,文中提出了一种新型Fibonacci电荷泵 ,它可以正常工作在从 1 2V到The charge pump is designed for LCD driver used in mobile telephone.By estimation of the rise time of the Fibonacci like charge pump,an optimal switching frequency is suggested to make a compromise between the rise time and the dynamic power dissipation.The simulating comparison results based on 1 2μm CMOS technology parameters show that the charge pump has a high pumping speed and a high power efficiency.By some techniques,a novel charge pump is proposed which can operate in versatile portable equipments supplied by 1 2V～5V.One is to improve the V GS voltage potential,the second is to connect substrates always to highest voltage by sets of two transistors.

关 键 词：液晶显示驱动电路 Fibonacci型 电荷泵单元 

分 类 号：TN873.93[电子电信—信息与通信工程] TN141.9