Display Types

What does LCD stand for?

Liquid crystal display

How does LCD work?

Light is shone through liquid crystals

What did we use before LCDs?

Large glass display tubes

What are the advantages of LCDs?

• light

• low power

• inexpensive

What are the disadvantages of LCD?

• difficult to get a true black

• require a backlight that is difficult to replace

What did older LCDs use as a backlight?

Fluorescents

What do modern LCDs use as a backlight?

LEDs

What does LED stand for?

Light emitting diode

What does TN stand for?

Twisted Nematic

What are advantages and disadvantages of a TN display?

A: fast response times
D: poor viewing angles

What does IPS stand for?

In plane switching

What are advantages and disadvantages of an IPS display?

A: excellent color representation

D: more expensive than TN

What does VA stand for?

Vertical Alignment

What are advantages and disadvantages of a VA display?

A: good color representation

D: slower response times than TN

What does OLED stand for?

Organic light emitting diode

How does an OLED work?

organic compound emits light when receiving an electric current

Why are OLED displays common in mobile devices?

• very accurate color representation

• thinner and lighter

What is a Mini LED backlight?

same backlight technology as a conventional LED-backlight LCD but with much smaller LEDs

How does Mini LED get LCD displays closer to a true black?

The screen can turn off LEDs on that part of the screen

What is more expensive: LED or OLED?

OLED

What technology tells a device where someone is touching on a touchscreen?

Digitizer

What type of power does a fluorescent LCD backlight require?

AC power

What laptop component converts DC into AC for the display?

The inverter