LCD & Plasma System
The two types of flat pannel displays being discussed here are plasma and LCD. Plasma Display are the early ones with LCD coming in recently and catching up fast interms of performance, price and display size.
First lets cover some basic concerning the technolgy of the two display systems. Both system utilize different technologies to display images and at the same time remaining “flat” with body pannels about 4 to 5 inch thick.
Let’s start with Plasma display technology first.
- Plasma Display:
The technology makes use of tiny glass tudes, more like tiny fluorescent tudes. These tiny tudes, also known as cells are sandwiched by two glass panels which are seperated by a very small gap. Into this neon-xeon gas is injected and sealed during the manufacturing process.
When an electric current is applied, the gas particles becomes charged and these charged particles are made to strike the red, green and blue phosphors used to coat the tiny glass tudes. By varying the electrical current and combining the three primary colors, an image is created. Each group of red, green and blue phosphors is called a pixel. A pixel is a unit of a picture element.
- LCD:
LCD stands for liquid crystal display. The technology relies on the special characteristic of liquid crystals, that is, they react to an electrical charge by changing their alignment.
Thus depending the way the crystals are aligned, either light can pass through or it is blocked out. This is achieved depending whether or not the crystal received an electric current. This is more like how window panes in a window control the amount of light passing through. LCD display pannel makes use of a light source at the back of the screen to shine through the LCD pannel.
Colored filters are used to create the three primary colors, red, green and blue. These are combined in various combination thereby creating an image.
Next lets move on to the pros and cons of LCD and Plasma.
Popularity: 1%
