一、前言眼睛是人类获得讯息的主要器官。在很多仪表中,为了便于识别,把各种物理量尽量模拟为长度,靠加大长度来提高测量的精度。这种模拟方式正在被数字化的方式所取代,对所得大量讯息的处理及存取,则借助于计算机。但是,它计算的结果仍然是眼看不见的电学讯号。所以,不论仪表的数字化,还是计算机的输出,都需要显示技术把不可见的讯号变为可见的输出讯号。显示器件及驱动电路把电学输入讯号变成可见的输出讯号,它是仪表、电子学、电视及计算机等和人之间的桥梁。它又是一个限制因素,目前还不能满足新技术发展的 I. Introduction The eye is the main organ for human information. In many instruments, in order to facilitate identification, various physical quantities as much as possible to simulate the length, by increasing the length to improve the measurement accuracy. This analogue approach is being replaced by a digital one, with the aid of computers, for the processing and access of a large amount of information obtained. However, the result of its calculation is still an invisible electrical signal. Therefore, regardless of the digitization of the meter or the output of the computer, display technology is required to turn the invisible signal into a visible output signal. Display devices and driver circuits turn the electrical input signal into a visible output signal, a bridge between instrumentation, electronics, television, and computers. It is also a limiting factor, at present still can not meet the new technology development