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← ScienceWhich outcome arises when electrostatic discharge pulse overwhelms a capacitive touchscreen's protective circuitry?
A)Phantom touch inputs displayed randomly✓
B)Screen brightness dims due backlight failure
C)Color distortion due to LCD degradation
D)Cracking sound produced by piezoelectric layers
💡 Explanation
When a powerful ESD pulse overwhelms the protection, parasitic capacitance creates false signals, causing incorrect location detection on the touch sensor due unbalanced charge distribution. Therefore phantom touches are displayed, rather than brightness, color changes, or cracking sounds which result from other failure modes.
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