1.2 - Laptop Displays

Question 1

Portable LCD

Liquid crystal display - Light shines through liquid crystals
Advantages

Answer 1

• Lightweight

* Relatively low power and relatively inexpensive

Question 2

Portable LCD
Liquid crystal display - Light shines through liquid crystals
Disadvantages

Answer 2

• Black levels are a challenge
• Requires separate backlight
• Fluorescent, LED, etc. / Difficult to replace

Question 3

OLED on laptops

Answer 3

• 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 4

Wi-Fi antennas

Answer 4

• Multiple antennas - WiFi main and aux and Bluetooth

* Antenna wires wrap around the laptop screen

Question 5

Laptop webcam

Answer 5

• Video capture - Built-in camera and microphone
• Usually includes both audio and video
• Specialized drivers and software

Question 6

Touchscreen

Answer 6

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

Question 7

Digitizer

Answer 7

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

Question 8

Backlight and inverter

Answer 8

• 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 9

Microphone

Answer 9

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