LED 驅(qū)動(dòng)芯片的動(dòng)態(tài)響應(yīng)特性經(jīng)常被忽略，但卻是相當(dāng)重要的一個(gè)特性。動(dòng)態(tài)響應(yīng)影響LED顯示屏的影像質(zhì)量，如灰階、線性度、EMI、信賴(lài)性。雖然這些特性彼此間有取舍關(guān)系．但是好的驅(qū)動(dòng)芯片應(yīng)該能夠在這些特性中取得較佳的平衡。本文將探討動(dòng)態(tài)響應(yīng)的重要性及LED驅(qū)動(dòng)芯片與電路板設(shè)計(jì)技術(shù)，以協(xié)助工程師設(shè)計(jì)出影像質(zhì)量良好的顯示屏。

AC responses of LED drivers are critical but usually ignored in LED display applications．AC responses affect the major performance of LED display panels，such as grayscales， linearity， EMI， and reliability． Although there is trade-off w ithin these requirements， LED drivers can provide balance．This article will further explain the importance of the AC responses of LED drivers and PCB design techniques to help engineers to design LED panels with good grayscale images