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Not too sure but I think lcd display drivers apply a constantly reversing dc voltage across the lcd.The voltage reverses 60 times a second to prevent damage to the lcd.Note that I stated a CONSTANTLY REVERSING DC VOLTAGE & not an AC VOLTAGE.There's a difference!No current actually passes through the lcd,which has 2 electrodes on it marked SEGMENT & COMMON,between which the voltage is applied.

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15y ago

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