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BUF20800-Q1: about VCOM work volatge is abnormal issue

Part Number: BUF20800-Q1

Tool/software:

Hi, Support Team


we use BUF20800-Q1 and find VCOM Voltage is abnormal and then abnormal display defect but became normal display after a few seconds. as below chart:

schematic:

VCOM work voltage waveform catch screen:

and then abnormal display defect but became normal display after a few seconds.

about Vcom voltage have pulse cause display is defect?

if any suggestion, Please advise me.

Thanks,

Best regards,

Lawrence