1.2 Laptop Displays

Question 1

Portable LCD

Answer 1

Liquid Crystal Display
Light shines through Liquid

Question 2

Portable LCD Advantages

Answer 2

• Lightweight
• Relatively low power
• Relatively inexpensive

Question 3

Portable LCD Disadvantages

Answer 3

• Black Levels are a challenge
• Requires separate backlight
• Florescent, LED, etc
• Lights are difficult to replace

Question 4

What does TN Mean?

Answer 4

Twisted Nematic

Question 5

TN details?

Answer 5

• The OG LCD technology
• Fast response times (Good for gaming)
• Poor viewing angles - color shifts

Question 6

What does IPS LCD Mean?

Answer 6

In Plane Switching

Question 7

IPS details?

Answer 7

• Excellent colour representation
• More expensive to produce than TN

Question 8

What does VA LCD Mean?

Answer 8

Vertical alignment

Question 9

VA Details?

Answer 9

• Good compromise between TN and IPS
• Good colour representation
• Slower response times

Question 10

What does OLED mean?

Answer 10

Organic Light Emitting Diode

Question 11

OLED Details?

Answer 11

• Organic compound emits light when receiving an electric current
• Thinner and lighter, flexible and mobile, no glass needed,
• No backlight (organic compound provides light)
• Tablets, phones and smart watches, very accurate colour representation, bit higher cost than LCD

Question 12

WiFi Antennas

Answer 12

• Multiple antennas, WiFi main and aux / Bluetooth
• Antenna wires wrap around the laptop screen, It’s up high

Question 13

Webcam Facts

Answer 13

• Video Capture, Built in camera and microphone.
• Usually includes both audio and video, specialised software.

Question 14

Microphone facts

Answer 14

• Built in to laptop dispaly, useful for video calls.
• Not as good for non casual use, analog or USB Microphones can help.

Question 15

What does CCFL mean?

Answer 15

Cold Cathode Fluorescent Lamp

Question 16

Fluorescent Facts

Answer 16

• Fluorescent Lamp
• Higher voltage and power needed.
• Added thickness to the display
• No longer a common backlight.
• Older Laptops will use these.

Question 17

LED Facts

Answer 17

LED- Backlit LCD Display
- Backlight is LED instead of fluorescent
- LEDS around the edge of the screen.
- An array of LEDs behind the screen.
The latest laptops are LED-Backlit

Question 18

Backlight and Inverter Facts

Answer 18

LCD displays need a backlight, Fluorescent lamp/LED to LCD display to your eyes.
- Some laptops have inverters, turn DC to AC
- Verify backlight, look closely and use a flashlight.
- May need to replace the LCD inverter or display, choose carefully.

Question 19

Digitizer Facts

Answer 19

• Use a pen like device as input, Stylus input, useful graphical input, Digitizer responds to touch, no keyboard required.
• But often still available, may options for input, use the best one for the job.