Laptop Displays Flashcards
What does LCD stand for
Liquid crystal display
Describe LCD
Light shines through liquid crystals
Advantages of LCD
– Lightweight
– Relatively low power
– Relatively inexpensive
Disadvantages of LCD
– challenge to display true black
– Requires separate backlight
– Lights are difficult to replace
Describe TN LCD
original LCD technology
fast response times(gaming)
poor viewing angles, colour shifts
Describe IPS LCD
– Excellent color representation
– More expensive to produce than TN
Describe VA LCD
– A good compromise between TN and IPS
– Good color representation
– Slower response times than TN
What does TN stand for
twisted nematic
What does IPS stand for
in plane switching
What does VA stand for
vertical alignment
What does OLED stand for
Organic Light Emitting Diode
Describe OLED
Organic compound emits light when
receiving an electric current
Advantages of OLED
thinner and lighter
accurate colour representation
Disadvantages of OLED
a bit higher cost than LCD
What is OLED used in
found on laptops, phones and smart watches
Describe Backlight for OLED
No backlight needed, the organic compound provides the light
Why is OLED thinner and lighter
no backlighting
no LCD
no glass to protect
Describe Wi-Fi Antennas
Multiple antennas, antenna wires wrap around the laptop screen up high.
Describe Webcams
Video capture with built in camera and microphone
Specialised drivers and software
Describe Microphone
Built in to the laptop display
Not good for non-casual use
What are microphones useful for
video calls
What does CCFL stand for
Cold Cathode Fluorescent Lamp
Describe CCFL
– Higher voltage and power needed
– Added thickness to the display
– No longer a common backlight
– Older laptops will use these
Describe LED backlighting
LED-backlit LCD display – Backlight is LEDs instead of florescent – LEDs around the edge of the screen – An array of LEDs behind the screen – The latest laptops are LED-backlit
