Mobile Device Displays Flashcards
(11 cards)
What does TN stand for and what type of display is it?
Twisted Nematic
An LCD-based screen (not LED!)
Older LCD tech compared to IPS and VA
What are the advantages and disadvantages of TN panels?
Pros:
Fastest response times
Reduces motion blur
Lowest cost
Cons:
Poor viewing angles
Low color accuracy and contrast
What are the advantages and disadvantages of IPS panels?
Pros:
Great response times
Wide viewing angles
Best color performance and accuracy
Cons:
Can suffer from motion blur
What are the advantages and disadvantages of VA panels?
Pros:
Higher contrast than TN
Better viewing angles than TN
Good color accuracy
High-end VA can rival IPS
Cons:
Slower than TN and some IPS panels
What are Passive Matrix LCDs?
Older display tech
Slower screen refresh
Blurry images
What are Active Matrix LCDs?
Faster image changes
Brighter display
Used in modern screens
What is Contrast Ratio in displays?
Difference between darkest black and brightest white
Higher contrast ratio = more grayscale detail and image clarity
What is OLED and how is it different from LCD?
Organic Light-Emitting Diodes
No backlight required—each pixel emits its own light
Higher contrast and more energy-efficient than LCD
Allows for thinner displays
What component is needed to restore touchscreen functionality?
Digitizer — senses touch input and sends it to the system
What does the inverter do in a mobile device display?
Converts DC to AC to power the LCD backlight
Mostly used in older CCFL-based screens
Where are antennas typically placed in mobile devices?
Around the edges or frame of the device
Often embedded in or near the screen or bezel
