TVs screens monitors CRT LCD Plasma Display Whats

TVs, screens, monitors

� CRT � LCD � Plasma Display What’s The Difference? ?

First. . What are displays based on? � Your brain will reassemble a collection of small colored dots (pixels) into a meaningful image. � Your brain will reassemble a sequence of still pictures (frames) shown in rapid succession into a single, moving scene.

CRT

CRT � Cathod Ray Tube. � Phosphors. http: //www. howstuffworks. com/tv 4. htm

http: //www. howstuffworks. com/tv 7. htm http: //www. wikipedia. org/Cathode_ray_tube

LCD � Liquid Crystal Display. � What are Liquid Crystals? Solid Liquid http: //www. wikipedia. org/Liquid_crystal Liquid Crystals

LCD � Light Polarization. � Liquid Crystals can be oriented using magnetic/electric fields to control light passage. http: //www. wikipedia. org/Polarization http: //www. howstuffworks. com/sunglass 2. html

http: //www. howstuffworks. com/lcd 2. html

Passive Matrix http: //www. howstuffworks. com/lcd 4. html

Active Matrix (TFT)

Plasma

Plasma Display � What’s Plasma? http: //electronics. howstuffworks. com/plasma-display. htm http: //www. wikipedia. org/Plasma

Plasma Display � What’s Plasma? � Neon and Xenon.

http: //electronics. howstuffworks. com/plasma-display 1. htm

So… Which Is The best?

May be CRT? Pros: The Cheapest. Best colors. More responsive. Multiple resolutions. More rugged. Cons: High power consumption. High eye strain. Too big and heavy. Uneven light output. Poor focusing across entire screen. Picture distorted by magnetic field Burn Ins(screen saver)!!!!

Or, LCD? Pros: Very power Efficient. Very thin and weigh less. Less eye strain. More adjustable. Environmentally friendly. Lives longer. High Resolutions. Cons: Narrow viewing angle. Pixelates on low-resolutions. Can’t produce true black (poor color saturation). Picture affected by magnetic and electric fields. Less responsive (Ghosts and Blurs). Fragile.

Then, is it A Plasma? Pros: No geometric distortion. Even light output. Less eye strain. Perfect focus. No susceptibility to magnetic fields. Largest viewing angle. Small response time. Cons: Very expensive. Low Brightness (not for bright places). Lower resolutions. Pixelates on low-resolutions. Even More Burn Ins!!!!! Fragile. Dies sooner.

Hey, you didn’t answer!! As long as science evolves and brings us more, you can never be sure. However, flat displays are more likely to dominate the future so, there is no time like the present to start enjoying their advantages.

THANK YOU

References � � � http: //www. howstuffworks. com http: //www. wikipedia. com http: //www. cnet. com http: //www. plasmadepot. com http: //www. ecoustics. com Mohamed Khaled Katri mohamedkkatri@gmail. com