1.2 Display of mobile devices. Flashcards
Light shines through liquid crystals.
– Lightweight
– Relatively low power
– Relatively inexpensive
– Black levels are a challenge
– Requires separate backlight
– Florescent, LED, etc.
– Lights are difficult to replace
Liquid Crystal Display
– The original LCD technology
– Fast response times (gaming!)
– Poor viewing angles - color shifts
TN (Twisted Nematic) LCD
– Excellent color representation
– More expensive to produce than TN
IPS (In Plane Switching) LCD
– A good compromise between TN and IPS
– Good color representation
– Slower response times than TN
Vertical alignment (VA)
Emits light when receiving an electric current.
Thinner and lighter
– Flexible and mobile - no glass needed
No backlight.
Tablets, phones, smart watches
– Very accurate color representation
– A bit higher cost than LCD
Organic light-emitting diode
Wires wrap around the laptop screen (n the display). Internet connection main, aux, and Bluetooth. You may improve signal by moving laptop around. Polarization of wire may cause change in the incoming signal.
WiFi antenna connector/
placement
Video capture. Bulit into most laptop displays. Includes both audio and video.
Webcam/Camera
Built-in to the laptop display
– Useful for video calls.
Many desktops may lack this feature but almost all laptops have it built in.
Microphone
- Use a pen-like device as input
– Stylus input - Useful for graphical input - Used commonly on laptop / tablets
– Or hybrid devices
Digitizer
- Merge laptop and tablet input. No keyboard required.
Touchscreen
Takes DC power and converts to AC form that can be used by an AC screen.
If problems with flickering display or dimness occurs then this part is the culprit.
Inverter