1.2 Laptop Displays Flashcards
1
Q
Portable LCD
A
- 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
2
Q
OLED on laptops
A
• 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
3
Q
Wi-Fi antennas
A
- Multiple antennas - WiFi main and aux and Bluetooth
* Antenna wires wrap around the laptop screen
4
Q
Laptop webcam
A
- Video capture - Built-in camera and microphone
- Usually includes both audio and video
- Specialized drivers and software
5
Q
Microphone
A
- Built-in to the laptop - Useful for video calls
- Not good for non-casual use
- Analog or USB microphones can help
6
Q
Fluorescent vs. LED backlighting
A
- LED-backlit LCD display
- Backlight is LEDs instead of florescent
- LEDs around the edge of the screen
- An array of LEDs behind the screen
- CCFL - Cold Cathode Fluorescent Lamp
- Higher voltage and power needed
- Added thickness to the display
- No longer a common backlight
7
Q
Backlight and inverter
A
- LCD displays need a backlight
- Florescent lamp to LCD display to your eyes
- Some laptops have inverters - Turn DC into AC
- Verify backlight - Look closely
- May need to replace the LCD inverter or display
- Choose carefully
8
Q
Digitizer
A
- Use a pen-like device as input - Useful for graphical input
- Becoming more common on laptop / tablets / hybrids
9
Q
Touchscreen
A
- Merge laptop and tablet input
- No keyboard required, but often still available
- Many options for input - Use the best one for the job
