随着LED显示屏控制技术和校正技术的发展，各厂家的显示效果优劣差距在进一步缩小，这个时候，显示屏外观结构件对其的影响就凸显起来，本文将从提高对比度、降低马赛克、增强耐候性三个方面来论述面罩、壳体的设计对LED显示屏在黑屏和亮屏时产生的不同影响。

With the development of LED display's control and correction technology, the differences between displays from different suppliers have been narrowing, and the effects of the display's structure have been playing a more important role. This article will discuss, from the angles of increasing contrast ratio, reducing mosaic and enhancing weather resisting property, how the design of the mask and the cabinet effects the display when it is on and off.