What is the difference between LCD and Plamsa TVs ...

Very generally:

LCD/LED - cheaper for smaller sizes (below 42 inches), better in bright rooms, lower power consumption

Plasma - better value for large screens (you don't get small plasma screens), 'better' picture (especially in dark rooms)

Source: LCD vs Plasma TVs

All types of flat screen TV (plasma, LCD and LED) are able to show a high-definition picture - there is no difference in this respect.

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Differences between LCD and Plasma

The best way to compare these two high tech TV’s is to simply compare and contrast them. Let’s start by looking at the features and advantages of LCD TV’s.


LCD & Plasma Similarities

Although LCD & Plasma TV’s have some important differences, they have quite a few characteristics in common that you should be familiar with when shopping for a new TV.

    * Resolution – Both types of TV’s have similar possible resolutions. They explain their resolution in horizontal by vertical like 1024×768.
    * Dot Pitch – When comparing the dot pitch of two different TV’s, the smaller the number the sharper your picture is going to be.
    * Response Time – This is another characteristic that you should prefer a smaller number. The response time shows how quickly the pixels can change color and brightness.
    * Brightness – This represents how much light is emitted from the TV. The name can be deceiving; it also measures the quality of the dark colors.
    * Contrast Ratio – This is one of the more important characteristics to compare. A high contrast ratio will give you the best picture when displaying dark and bright colors together.
    * Aspect Ratio – Most LCD and Plasma TV’s come in widescreen (16:9) but there are other options available

LCD

LCD stands for liquid crystal display. These types of displays have been around for awhile and are commonly used with computers. One reason for their big popularity is the ability to produces a better picture than CRT monitors but also being much thinner.

Pro’s

    * Low Energy Consumption – LCD monitors use very low amounts of power. This is why it is very commonly used in battery powered devices.
    * LCD screens also reduce the amount of glare on the screen which can be very beneficial if your TV is in a room with lots of light.
    * If an image is left on the screen too long, LCD screens are less likely to experience the image being burned into the screen. If this does occur, it’s easier to repair than other types of TV’s.

Con’s

    * The viewing angle of an LCD TV is typically not as great as Plasma but the difference is not great enough to make a huge difference.
    * LCD TV’s can sometimes get dead pixels which aren’t typically covered under warranty. Although they are very small, they can become very annoying.
    * Brightness levels aren’t as great as Plasma and it’s not possible to display darks quite as dark.

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This is from Wikipedia

Plasma Display

A plasma display panel (PDP) is a type of flat panel display common to large TV displays (80 cm or larger). They are called "plasma" displays because the pixels rely on plasma  cells, or what are in essence chambers more commonly known as fluorescent lamps. A panel typically has millions of tiny cells in compartmentalized space between two panels of glass.

LCD Display

A liquid crystal display (LCD) is a thin, flat electronic visual display that uses the light modulating properties of liquid crystals (LCs). LCs do not emit light directly.

They are used in a wide range of applications including: computer monitors, television, instrument panels, aircraft cockpit displays, signage, etc. They are common in consumer devices such as video players, gaming devices, clocks, watches, calculators, and telephones. LCDs have displaced cathode ray tube(CRT) displays in most applications. They are usually more compact, lightweight, portable, less expensive, more reliable, and easier on the eyes.[citation needed] They are available in a wider range of screen sizes than CRT and plasma displays, and since they do not use phosphors, they cannot suffer image burn-in.

LCDs are more energy efficient and offer safer disposal than CRTs. Its low electrical power consumption enables it to be used in battery-powered electronic equipment. It is an electronically-modulated optical device made up of any number of pixels filled with liquid crystals and arrayed in front of a light source (backlight) or reflector to produce images in colour or monochrome. The earliest discovery leading to the development of LCD technology, the discovery of liquid crystals, dates from 1888.[1] By 2008, worldwide sales of televisions with LCD screens had surpassed the sale of CRT units.

You can find the great explanation at this article http://www.cnet.com.au/plasma-vs-lcd-which-is-right-for-you-240036500.htm.

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Rack mount lcd, kvm rackmount, kvm lcd

LCD TV are television setsthat use Liquid-crystal display technology to produce images.

Plasma TVs are television sets with a plasma display panel.A plasma display panel (PDP) is a type of flat panel display common to large TV displays (80 cm/30 in or larger). They are called "plasma" displays because the pixels rely on plasma cells, or what are in essence chambers more commonly known as fluorescent lamps.