Laptop Display

Question 1

What are the advantages of an LCD?

Answer 1

They are lightweight, low power and inexpensive

Question 2

What are the disadvantages of an LCD?

Answer 2

Black levels are a challenge, requires a separate backlight which is difficult to replace if it fails.

Question 3

What are the three different technologies of LCD?

Answer 3

TN (Twisted Neumatic), IPS (In Plane Switching) VA (Vertical Alignment)

Question 4

What are the differences between the three LCD technologies?

Answer 4

TN = has a fast response time but bad viewing angles.

IPS = great colour representation but is most expensinve.

VA = a good compromise between both with good colour representaion but slower than TN.

Question 5

What is OLED?

Answer 5

Organic Light Emitting Diode. An organic compound which emits light when receiving an electeric current. Often seen in newer devices like tablets and mobile phones.

Question 6

What is CCFL?

Answer 6

Cold Cathode Florescent Light. An older form of backlighting system.

Question 7

What is an inverter?

Answer 7

Something which converts the AC of your CCFL to the DC of your laptop.

Question 8

What is one way of verifying that your backlight has failed?

Answer 8

Shine a flashlight against the screen.