一种单片机直接动态驱动段式LCD的新方法

A New Method for Direct Driving Segment LCD Dynamically By Single Chip Computer

提出了一种单片机直接动态驱动段式LCD的新方法,仅使用二极管和电阻构成的简单串联电路实现了对LCD的背极有效控制。该电路与程序相配合,实现了平均电压控制法,交流驱动信号的产生由背极信号与段极信号的配合形成,且交流驱动信号的直流分量的平均值为零。该单片机直接动态驱动方法具有一般性,适用于电路板装配空间受限或单片机选型受限的电子类产品研发。

This paper presents a new method for direct driving segment LCD dynamically by a single chip computer,which designs a simple circuit only using diodes and resistors to control the back poles＇ signal of LCD effectively.The circuit realizes the average voltage controlling method,and outputs AC driving signals by cooperating the signals of back poles and segment poles.The DC average value of the AC driving signals is zero.