220-801 · Question #74
Which of the following technologies uses a Cold Cathode Florescent Lamp Inverter to backlight the screen?
The correct answer is B. LCD. Traditional LCD displays use a Cold Cathode Fluorescent Lamp (CCFL) inverter to power the fluorescent backlight behind the liquid crystal panel.
Question
Which of the following technologies uses a Cold Cathode Florescent Lamp Inverter to backlight the screen?
Options
- APlasma
- BLCD
- CLED
- DOLED
How the community answered
(27 responses)- A4% (1)
- B93% (25)
- C4% (1)
Why each option
Traditional LCD displays use a Cold Cathode Fluorescent Lamp (CCFL) inverter to power the fluorescent backlight behind the liquid crystal panel.
Plasma displays are self-emitting - each pixel is an individual plasma cell that generates its own light, requiring no backlight or inverter.
LCD (Liquid Crystal Display) panels are not self-emitting; they require a backlight source. Older LCD technology uses a CCFL tube and an inverter board that converts DC power to the AC high voltage needed to illuminate the fluorescent lamp. Newer LCDs replaced this with LED backlights.
LED displays use light-emitting diodes for backlighting and do not require a CCFL inverter board.
OLED displays are self-emitting organic compounds that produce their own light per pixel and require no backlight whatsoever.
Concept tested: CCFL inverter backlight technology in LCD displays
Source: https://learn.microsoft.com/en-us/windows-hardware/drivers/display/monitor-inf-file-sections
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