1.2 - Mobile Devices Flashcards
What does LCD stand for? How does it work? (1.2)
Liquid Crystal Display
Light shines through liquid crystals
What are some advantages of an LCD display? (1.2)
Lightweight
Low Power
Inexpensive
What are some disadvantages of an LCD display? (1.2)
Difficult to get a “true black” color
Requires a separate backlight that is difficult to replace
What are the three technologies of LCD? (1.2)
1) Twisted Nematic (TN)
2) In-plane Switching (IPS)
3) Vertical Alignment (VA)
Which LCD technology has fast response times, but poor viewing angles resulting in color shifts? (1.2)
Twisted Nematic (TN)
Which LCD technology was the original? (1.2)
Twisted Nematic (TN)
Which LCD technology has excellent color representation, but more expensive than the basic technology? (1.2)
In Plane Switching (IPS)
Which LCD technology has good color representation, middle of the pack cost, but slower response times than the basic technology? (1.2)
Vertical Alignment (VA)
What type of display may be found on newer devices? (1.2)
Organic Light Emitting Diode (OLED)
What is the key difference between an LCD and an OLED? (1.2)
An LCD has a backlight. An OLED does not. An OLED creates its own light.
Which is thinner and lighter, LCD or OLED? (1.2)
OLED
Where within a laptop is the antenna usually located? Why? (1.2)
Above the screen because you want the antenna to be at the highest point of the laptop when it is opened.
What does CCFL stand for? Where is it used? (1.2)
Cold Cathode Fluorescent Lamp
It is an outdated option to be used as a fluorescent light source for an LCD’s backlight.
Older LCDs may use this kind of backlight. (1.2)
Cold Cathode Fluorescent Lamp (CCFL)
Newer LCDs may use this kind of backlight. (1.2)
LED
