目錄 摘要 ····························································1 1 緒論····························································2 1.1 LED 顯示屏的研究背景及意義·············································2 2 LED 電子顯示屏的介紹············································2 2.1 LED 顯示屏簡介·························································2 2.2 LED 顯示屏的分類·······················································3 3 LED 顯示屏的組成················································4 3.1 LED 顯示模塊結(jié)構(gòu)·······················································4 3.2 LED 顯示系統(tǒng)的構(gòu)成·····················································5 3.3 LED 顯示屏的硬件原理···················································6 4 LED 顯示屏的設(shè)計················································7 4.1 LED 點陣顯示屏驅(qū)動設(shè)計·················································7 4.2 LED 顯示屏的控制模式···················································8 4.3 LED 顯示屏的主控電路···················································8 4.4 LED 顯示屏的實現(xiàn)技術(shù)···················································9 5 LED 顯示屏的應(yīng)用···············································10 5.1 LED 顯示屏的應(yīng)用······················································10 5.2 成果展示與總結(jié)························································11 5.3 LED 顯示屏的術(shù)語解釋··················································13 參考文獻························································15 致謝····························································16 LED 顯示屏設(shè)計與制作 摘要：LED 就是 light emitting diode （發(fā)光二極管）的英文縮寫,它是一種能發(fā)光的 二極管。

LED 顯示屏（LED display），又叫電子顯示屏或者飄字屏幕，是由 LED 點陣組成， 通過紅色或綠色燈珠的亮滅來顯示文字、圖片、動畫、視頻等各種信息的顯示屏幕，內(nèi)容可 以隨時更換，各部分組件都是模塊化結(jié)構(gòu)，通常由顯示模塊、控制系統(tǒng)及電源組成。顯示模 塊由 LED 燈組成的點陣構(gòu)成，負(fù)責(zé)發(fā)光顯示；控制系統(tǒng)通過控制相應(yīng)區(qū)域的亮滅led顯示屏設(shè)計，可以讓屏 幕顯示文字、圖片、視頻等內(nèi)容，恒舞動卡主要是播放動畫的；電源系統(tǒng)負(fù)責(zé)將輸入電壓或 電流轉(zhuǎn)為顯示屏需要的電壓電流。 關(guān)鍵詞：LED；數(shù)據(jù)傳輸；信息發(fā)布系統(tǒng)；單片機 1 1 緒論 1.1 LED 顯示屏的研究背景及意義 發(fā)光二極管(LED)，是一種把電能變成光能的特種器件，主要由 PN 結(jié)芯片、 電極和光學(xué)系統(tǒng)構(gòu)成。當(dāng)系統(tǒng)受到外界激發(fā)后，會從穩(wěn)定的低能態(tài)躍遷到不穩(wěn)定 的高能態(tài)，當(dāng)系統(tǒng)由不穩(wěn)定的高能態(tài)重新回到穩(wěn)定的低能態(tài)時，能量差以光的形 式輻射出來，就會產(chǎn)生發(fā)光現(xiàn)象。當(dāng)在 PN 結(jié)上加以正向電壓之后，P 區(qū)的空穴 注入至 N 區(qū)，N 區(qū)的電子注入至 P 區(qū)，相互注入的電子與空穴相遇后即產(chǎn)生復(fù)合， 這些多數(shù)載流子在結(jié)的注入和復(fù)合中產(chǎn)生輻射而發(fā)光。