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DLP3010显示残影问题

Other Parts Discussed in Thread: DLPA3000, DLPC3478

TI工程师,您好!

     我们自己做的dlpc3478+dlpa3000的板,可以正常投影,但是现在出现了一个情况,就是internal patterns模式下,关闭投图,光机仍有残影现象,请问这是什么原因?

图一为正常投射,图二为关闭投射后的残影