led显示屏设计 LED点阵显示屏设计与制作毕业论文_设计/艺术_人文社科_专业资料

目录 摘要 ····························································1 1 绪论····························································2 1.1 LED 显示屏的研究背景及意义·············································2 2 LED 电子显示屏的介绍············································2 2.1 LED 显示屏简介·························································2 2.2 LED 显示屏的分类·······················································3 3 LED 显示屏的组成················································4 3.1 LED 显示模块结构·······················································4 3.2 LED 显示系统的构成·····················································5 3.3 LED 显示屏的硬件原理···················································6 4 LED 显示屏的设计················································7 4.1 LED 点阵显示屏驱动设计·················································7 4.2 LED 显示屏的控制模式···················································8 4.3 LED 显示屏的主控电路···················································8 4.4 LED 显示屏的实现技术···················································9 5 LED 显示屏的应用···············································10 5.1 LED 显示屏的应用······················································10 5.2 成果展示与总结························································11 5.3 LED 显示屏的术语解释··················································13 参考文献························································15 致谢····························································16 LED 显示屏设计与制作 摘要：LED 就是 light emitting diode （发光二极管）的英文缩写,它是一种能发光的 二极管。

LED 显示屏（LED display），又叫电子显示屏或者飘字屏幕，是由 LED 点阵组成， 通过红色或绿色灯珠的亮灭来显示文字、图片、动画、视频等各种信息的显示屏幕，内容可 以随时更换，各部分组件都是模块化结构，通常由显示模块、控制系统及电源组成。显示模 块由 LED 灯组成的点阵构成，负责发光显示；控制系统通过控制相应区域的亮灭led显示屏设计，可以让屏 幕显示文字、图片、视频等内容，恒舞动卡主要是播放动画的；电源系统负责将输入电压或 电流转为显示屏需要的电压电流。 关键词：LED；数据传输；信息发布系统；单片机 1 1 绪论 1.1 LED 显示屏的研究背景及意义 发光二极管(LED)，是一种把电能变成光能的特种器件，主要由 PN 结芯片、 电极和光学系统构成。当系统受到外界激发后，会从稳定的低能态跃迁到不稳定 的高能态，当系统由不稳定的高能态重新回到稳定的低能态时，能量差以光的形 式辐射出来，就会产生发光现象。当在 PN 结上加以正向电压之后，P 区的空穴 注入至 N 区，N 区的电子注入至 P 区，相互注入的电子与空穴相遇后即产生复合， 这些多数载流子在结的注入和复合中产生辐射而发光。