Display Technologies

Question 1

What is a pixel?

Answer 1

An individual point on a screen inside a display, representing the smallest unit of the image.

Question 2

What is a thin-film transistor (TFT)?

Answer 2

A type of LCD panel technology used in displays.

Question 3

What are Twisted Nematic (TN) panels, and what are their key features?

Answer 3

Crystals twist/untwist in response to voltage.

Provide fast response times, ideal for gaming.

Question 4

What are In-Plane Switching (IPS) panels, and what are their advantages?

Answer 4

Crystals rotate to deliver color.

Support wide viewing angles (178° horizontal and vertical).

Question 5

What are Vertical Alignment (VA) panels, and what is their key strength?

Answer 5

Crystals tilt to deliver color.

Offer contrast ratios 2–3x better than standard IPS displays.

Question 6

What is a Cold Cathode Fluorescent Lamp (CCFL)?

Answer 6

A backlight for LCD screens.

Uses AC voltage to light up the display.

Question 7

How do LEDs differ from CCFLs in displays?

Answer 7

LEDs use direct current (DC).

They consume less power, improving battery life and performance.

Question 8

What are the characteristics of Organic LEDs (OLEDs)?

Answer 8

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.

Question 9

What is a primary advantage of OLED technology?

Answer 9

OLEDs can produce self-illuminating pixels, eliminating the need for a backlight.

Question 10

Why are LED displays preferred over CCFL displays?

Answer 10

LEDs are more energy-efficient, lighter, and offer better brightness control.