Mobile Devices - Mobile Display Types

Question 1

Capacitive Touch Screen

Answer 1

Any touchscreen that works by seeing the distortion in a electrostatic field. Less expensive, can only support a single tactile input

Question 2

Multi-Touch Screen

Answer 2

Can process two or more contact points simultaneously

Question 3

Liquid-Crystal Display (LCD)

Answer 3

Uses liquid crystal where the properties can change with the application of voltage

Question 4

Pixel (Picture Element)

Answer 4

Individual point on a screen inside of a display

Question 5

Thin-film transistor (TFT)

Answer 5

It’s referred to as an LCD panel

Question 6

TFT - Twisted Nematic (TN)

Answer 6

Contains crystals that twist or untwist in response to the voltage being applied or removed. Supports fast response time in comparison to other TFT technologies and displays

Question 7

TFT - In-Plane Switching (IPS)

Answer 7

Uses crystals that rotate to be able to deliver color. Better color reproduction at a wider range of viewing angle. Can support 178 horizonal and vertical viewing angles. Response times close to TN display

Question 8

TFT - Vertical alignment (VA)

Answer 8

Crystals are tilted to be able to deliver color. a VA display has a contrast ratio of two to three times better than a standard IPS display

Question 9

Cold Cathode Fluorescent Lamp (CCFL)

Answer 9

Lamp that sits behind the display and lights up the liquid crystal display to show the colors and images properly on the screen. It requires AC voltage.

Question 10

Light-Emitting Diode (LED)

Answer 10

Newer form of light that uses direct current (DC). The use of LEDs uses less power, leading to longer battery life and better performance