CompTIA A+ 220-1101 Practice Question

The purpose of an inverter in a laptop with an LCD display is to convert direct current (DC) power to alternating current (AC) power to illuminate the backlight of the display. Without an inverter or similar technology, the LCD would not be able to produce visible light, making the display unusable. While LED-backlit displays do not use an inverter, traditional LCD displays with CCFL (cold cathode fluorescent lamp) backlights require an inverter to function.