Display Technologies Flashcards
What is a pixel?
An individual point on a screen inside a display, representing the smallest unit of the image.
What is a thin-film transistor (TFT)?
A type of LCD panel technology used in displays.
What are Twisted Nematic (TN) panels, and what are their key features?
Crystals twist/untwist in response to voltage.
Provide fast response times, ideal for gaming.
What are In-Plane Switching (IPS) panels, and what are their advantages?
Crystals rotate to deliver color.
Support wide viewing angles (178° horizontal and vertical).
What are Vertical Alignment (VA) panels, and what is their key strength?
Crystals tilt to deliver color.
Offer contrast ratios 2–3x better than standard IPS displays.
What is a Cold Cathode Fluorescent Lamp (CCFL)?
A backlight for LCD screens.
Uses AC voltage to light up the display.
How do LEDs differ from CCFLs in displays?
LEDs use direct current (DC).
They consume less power, improving battery life and performance.
What are the characteristics of Organic LEDs (OLEDs)?
Each pixel has its own LED light source.
Can be made from flexible materials like plastic. Can be folded, rolled, or shaped into various forms.
What is a primary advantage of OLED technology?
OLEDs can produce self-illuminating pixels, eliminating the need for a backlight.
Why are LED displays preferred over CCFL displays?
LEDs are more energy-efficient, lighter, and offer better brightness control.