1.2 Laptop Displays

Question 1

Portable LCD

Answer 1

Liquid crystal display - Light shines through liquid crystals
Advantages
• Lightweight
• Relatively low power and relatively inexpensive
Disadvantages
• Black levels are a challenge
• Requires separate backlight
• Florescent, LED, etc. / Difficult to replace

Question 2

OLED on laptops

Answer 2

Organic Light Emitting Diode
• Organic compound emits light when
receiving an electric current
• Thinner and lighter
• Flexible and mobile - no glass needed
• No backlight - The organic compound provides the light
• Not quite ready for laptops
• Organic materials degrade over time
• Decayed images can remain on the screen
• More costly and power hungry than LCD

Question 3

Wi-Fi antennas

Answer 3

• Multiple antennas - WiFi main and aux and Bluetooth

* Antenna wires wrap around the laptop screen

Question 4

Microphone

Answer 4

• Built-in to the laptop
• Useful for video calls
• Not good for non-casual use
• Analog or USB microphones can help

Question 5

Backlight and inverter

Answer 5

• LCD displays need a backlight
• Florescent lamp to LCD display to your eyes
• Some laptops have inverters
  
  • Convert DC into AC
• Verify backlight
  
  • Look closely
• May need to replace the LCD inverter or display
  
  • Choose carefully

Question 6

Digitizer

Answer 6

• Use a pen-like device as input
• Useful for graphical input
• Becoming more common on laptop / tablets
• Or hybrid devices

Question 7

Touchscreen

Answer 7

• Merge laptop and tablet input
• No keyboard required
  
  • But often still available
  • Many options for input
• Use the best one for the job