thorliu 12小时前 开发者_StackOverflow这个不能一概而论。LED屏成本主要由LED灯珠、PCB、元器件（主要为驱动芯片）、灌封胶（硅胶）、开关电源、控制系统、塑胶套件、机箱（包含紧固件）以及人工成本等组成。打
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