1.2 - Laptop Displays

Question 1

What is an LCD display?

Answer 1

An LCD (Liquid Crystal Display) is a screen technology where liquid crystals and color filters are backlit by a light source to produce an image.

Question 2

What are the advantages of an LCD display?

Answer 2

LCD displays are lightweight, use very little power, and are relatively inexpensive.

Question 3

What is a disadvantage of an LCD display?

Answer 3

One disadvantage of LCD displays is that achieving true black is difficult due to the backlight shining through.

Question 4

What are the three types of LCD technologies?

Answer 4

The three types are TN (Twisted Nematic), IPS (In-Plane Switching), and VA (Vertical Alignment) displays.

Question 5

What is a TN LCD known for?

Answer 5

TN (Twisted Nematic) LCDs are known for their fast response times, making them ideal for gaming or fast-moving graphics.

Question 6

What is an IPS LCD known for?

Answer 6

IPS (In-Plane Switching) LCDs are known for their excellent color representation, making them ideal for graphics work and desktop publishing.

Question 7

What is a VA LCD?

Answer 7

VA (Vertical Alignment) LCDs offer a balance between color representation and response times, slower than TN but with better color than IPS.

Question 8

What is an OLED display?

Answer 8

An OLED (Organic Light Emitting Diode) display does not require a backlight and emits light when powered, making it thinner and lighter with better color representation.

Question 9

Where are OLED displays commonly found?

Answer 9

OLED displays are commonly found in tablets, phones, and smart devices due to their light weight and great color representation.

Question 10

Why are wireless antennas placed in laptop displays?

Answer 10

The laptop display is the highest component in the system, making it an ideal place to run wireless antennas for better signal reception.

Question 11

What is a common issue when replacing a laptop display?

Answer 11

When replacing a laptop display, it is important to reconnect all video components and wireless antenna wires properly.

Question 12

What is the purpose of the webcam and microphone in a laptop display?

Answer 12

The webcam and microphone are integrated into the display for video capture, meetings, and video conference calls.

Question 13

What is a CCFL backlight?

Answer 13

A CCFL (Cold Cathode Fluorescent Lamp) backlight is an older type of backlight that requires more power and is thicker than LED backlights.

Question 14

What is an LED backlight?

Answer 14

An LED (Light Emitting Diode) backlight is thinner and more power-efficient than CCFL, often used in modern LCD displays.

Question 15

What are inverters used for in older laptops?

Answer 15

Inverters convert DC power to AC power to run CCFL backlights in older laptops.

Question 16

How can you diagnose a failed backlight?

Answer 16

Shine a flashlight at the screen; if you can see faint images, the problem is likely with the backlight rather than the display itself.

Question 17

What is a digitizer in a laptop display?

Answer 17

A digitizer converts analog input, such as from a stylus or touch, into digital signals that the computer can use.

Question 18

What is the purpose of a touch screen digitizer?

Answer 18

A touch screen digitizer converts input from your finger into digital signals that can be used by the system.