Chapter 4 pages 185-193 Flashcards
What does LCD stand for?
Liquid Crystal Display
What are the 2 forms of LCD screens and what are some strengths and weakness?
TN (twisted Nematic)-Faster, cheaper
ips (in-plane switching)- true to life colors, view able wider angles.
What are the 3 forms of Pixel Addressing?
Active Matrix, Passive matrix, Dual Scan
Explain what is a Backlight source for LCD screens.
Ambient light needed to light up a LCD screen.
What is an active matrix?
A Screen made up of several independent LCD pixels. Very power consuming but very crisp and easy to see from all angles. Uses dedicated transistors.
What is a Passive Matrix?
Does not use Dedicated transistors, uses X-Y coordinates to light-up one pixel at a time.
What is a Dual Scan?
Its a mix of Passive matrix and Active Matrix, it splits the screen in to 2 screens and uses X-Y coordinates with specific pixels.
What does PDP stand for?
Plasma Display Panel
How does a Plasma Display work?
Using sealed chambers with inert gases of Phosphors, are light up using electrodes, much like a neon sign.
What is Rear Projection?
A TV system that used CRT technology to drive 3 filtered light sources that worked together to make an RGB image.
How is the power of Projectors measured?
Power of a projector is measured in brightness which is measure in Lumens.
What is OLED Stand for?
Organic Light emitting Diode.
What are the 2 versions of OLEDS and how do they differ?
AMOLED and PMOLED, (Amoled is active matrix oled); (PMOLED is passive Matrix OLED) AMOLED is sharper and better quality but require more electrodes.
What is the Soap Opera Effect?
Its an issue for LCD screens that have a high refresh rates mixed in with motion smoothing that give the feel to most viewers of the lower-quality lifelike cinematography of Soap-operas.
What are the names of the enhancements made to Amoled technology?
Super AMOLED and Super Amoled Plus
