220-801 · Question #650
In older laptop screens, the backlight is powered by which of the following?
The correct answer is A. A CCFL lamp. Cold Cathode Fluorescent Lamps (CCFLs) were the standard backlight technology used in older LCD laptop displays. CCFLs are thin fluorescent tubes that run along the edge or back of the screen to illuminate the liquid crystal panel. Modern laptops have replaced CCFLs with LED…
Question
In older laptop screens, the backlight is powered by which of the following?
Options
- AA CCFL lamp
- BA gas
- CLEDs
- DOLED
How the community answered
(48 responses)- A88% (42)
- B6% (3)
- C2% (1)
- D4% (2)
Explanation
Cold Cathode Fluorescent Lamps (CCFLs) were the standard backlight technology used in older LCD laptop displays. CCFLs are thin fluorescent tubes that run along the edge or back of the screen to illuminate the liquid crystal panel. Modern laptops have replaced CCFLs with LED backlights, which are thinner, more energy-efficient, and longer-lasting. OLED panels are self-emissive and require no backlight at all.
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