Display Technologies Flashcards

1
Q

What is a pixel?

A

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

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2
Q

What is a thin-film transistor (TFT)?

A

A type of LCD panel technology used in displays.

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3
Q

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

A

Crystals twist/untwist in response to voltage.

Provide fast response times, ideal for gaming.

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4
Q

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

A

Crystals rotate to deliver color.

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

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5
Q

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

A

Crystals tilt to deliver color.

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

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6
Q

What is a Cold Cathode Fluorescent Lamp (CCFL)?

A

A backlight for LCD screens.

Uses AC voltage to light up the display.

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7
Q

How do LEDs differ from CCFLs in displays?

A

LEDs use direct current (DC).

They consume less power, improving battery life and performance.

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8
Q

What are the characteristics of Organic LEDs (OLEDs)?

A

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.

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9
Q

What is a primary advantage of OLED technology?

A

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

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10
Q

Why are LED displays preferred over CCFL displays?

A

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

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