220-801 · Question #378
Which of the following parts of a laptop screen provides illumination for the LCD?
The correct answer is B. Backlight. The backlight is the light source behind the LCD panel that makes the screen visible. Older laptops used CCFL (Cold Cathode Fluorescent Lamp) backlights; modern ones use LED backlights. The inverter is a separate component that converts DC power to AC power to drive a CCFL…
Question
Which of the following parts of a laptop screen provides illumination for the LCD?
Options
- AInverter
- BBacklight
- CInverter connector cable
- DBezel
How the community answered
(42 responses)- A2% (1)
- B93% (39)
- C5% (2)
Explanation
The backlight is the light source behind the LCD panel that makes the screen visible. Older laptops used CCFL (Cold Cathode Fluorescent Lamp) backlights; modern ones use LED backlights. The inverter is a separate component that converts DC power to AC power to drive a CCFL backlight - it powers the backlight but is not itself the illumination source. The inverter connector cable links the inverter to the backlight. The bezel is the plastic frame surrounding the screen with no illumination function.
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