March 31, 2009

Flat Screen TV Comparison: Plasma vs LCD

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Flat screen TV is one of the most popular and exciting TV technologies today. At only a few inches thick, flat screen TVs offer unparalleled flexibility and convenience. Older conventional TV’s, in fairness to them, did offer crisp and vibrant images. However, these TV’s, which operate through a cathode ray tube (CRT), suffered from one major drawback, they were bulky. As screen size increased, so did the bulk and weight. However, the TV of old has reached its twilight years. New television technologies have enabled TV manufacturers to create TVs with wider screen size yet still only a few inches thick. Thus, flat screen TVs usher home entertainment into the 21st century.

Flat Screen TV basically refers to two technologies: Plasma and LCD. The advances in these two technologies have enabled TV makers to build thin, lightweight TV screens with a large picture area. Plasma and LCD both offer similarly large, lightweight, flat screen TV’s but the similarities are skin deep for their inner workings are different.

Plasma or LCD?

Plasma and LCD TVs generally look similar however they use very different technologies. Plasma utilizes a grid of tiny cells of gas plasma that light up and create a picture when charged by precise electrical voltages. LCD (liquid crystal display) screens on the other hand are made of liquid crystals sandwiched between two glass plates and create images by varying the amount of electrical charge applied to the crystals. Both Plasma and LCD offer excellent picture quality. The following are their strengths and weaknesses and edge over the other.

1. Plasma screens can display blacks more accurately compared to LCD. Thus, pictures in a Plasma TV have richer contrast and better detail especially in dark TV and movie scenes. LCD TV’s are catching up however.
2. Plasma TV has better viewing angles than LCD TV. How far you can sit on either side of the screen before the qualities of the pictures are affected is what the “viewing angle” is. In LCD TVs, brightness and color tend to shift when angled too far while that of Plasma TVs remain solid.
3. Plasma TV can produce brighter color while light leakages in LCD screens affect the color saturation.
4. Plasma TVs are priced relatively less than their LCD counterparts especially in the large screen segment. Plasma TVs offer much larger sizes than LCDs, yet are still priced lower.
5. LCD has a higher native resolution than plasma TVs of the same size. This results to sharper images and makes LCD TV the better choice for HDTV.
6. LCD TVs consume almost 30% less power than Plasma TVs.
7. LCD TVs are generally lighter than similar sized Plasmas.
8. Among the two, LCD screens have a longer life span than plasma screens. LCDs can last up to 60,000 hours compared to Plasma that average from 30,000 to 60,000 hours.
9. Plasma TVs are more prone to screen burn-ins compared to LCDs although newer plasma technology are less susceptible to these.

If you are looking for a large flat screen TV, Plasma TV is recommended. Plasma TVs can give you better value for your money. The price difference between Plasma TVs and LCD TVs is big. However, if you have money to burn, then LCD TV is the better choice especially if you want the sharpest images. For smaller flat screen TVs at the range of 15″ to 36″, LCD is the way to go. Ultimately, both technologies are still evolving and new innovations and improvements are definitely in the works.

About the Author

Mitchell Medford is an author and product consultant for several consumer electronics manufacturers. Visit his website for more information on home theater, LCD TVs, and plasma televisions.

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March 30, 2009

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March 29, 2009

LCD Plasma TV?s Popularity..

As time goes by, televisions are becoming one of the needs of many people all over the world when it comes to entertainment and relaxation gadgets.

Millions of homes have television sets. Everyday, people are watching their favorite programs on TV. They have been dreaming of a perfect modern television that will best fit their rooms and would provide them with the best picture.

Of course, they like to have a flat screen displayed with excellent image quality and large screen sizes perfect for a home theater system, like those seen in movie theaters.

Therefore, electric companies manufacture high-technology television to provide the consumer the best convenience ever!

It was really a great advantage for huge electric companies to manufacture and sell their products since the people are addicted in televisions.

Various kinds of televisions are released everyday by manufacturers. LCD or liquid crystal display plasma television is one of them. LCD TVs look cool with their cutting-edge look alone; it can impress friends and neighbors.

Even better, LCD TVs are innovative. LCD TVs come in more sizes than any flat-panel technology, allowing you to enjoy watching them nearly anywhere: the family room, a home office or even in the kitchen.

There are plenty of LCD plasma Televisions that are sold in the market. Although the price is high, people are still interested in purchasing these items. LCD technology is constantly evolving. LCDs today employ several variations of liquid crystal technology.

The first Liquid Crystal Display, which appeared in the early 1970?s are, considered the original fixed-pixel displays. LCD televisions have made huge headway in HDTV home theaters.

They are capable of powering front projectors, rear-projection TVs, and flat-panel displays. These televisions come in projection and flat panel technology.

Liquid Crystal Display technology is constantly evolving. LCDs today employ several variations of liquid crystal technology.

LCD televisions uses essentially a fluorescent back light to send light through its pixel design, which contains liquid crystal molecules and polarizing substrate to give form to light and color. The “liquid” crystal in an LCD is actually used in its solid state.

This technology has become very popular in flat panel television screens and projectors for home theater design. People like to purchase LCD televisions because of its modernized features.

LCD or liquid crystal display have sleek flat panel screen design and has clear picture. This unit consumes less energy. LCD televisions are actually lighter than a regular TV and can be mounted onto a wall. LCD TV supports HDTV compatibility, and can be used as a computer monitor and as a television for your home theater design.

A lot of retail stores and online stores are selling LCD plasma television. If your ‘e looking to purchase a LCD projector or LCD flat panel screen online buyers guides will be able to help you choose a reliable and trusted LCD television merchant. If you want to shop for this item online, just check out the trusted online merchants for discount prices.

LCD television manufacturers today are competing in the marketing terms of sales and product quality. They have been improving and creating variety of modern television to fit the convenience of home entertainment. LCD televisions manufacturers like: JVC, Sharp, Sony, Samsung, Panasonic, Hitachi and Phillips have become very popular because of their top-quality and great warranty deals.


About the Author: John Rivers is the owner of HDTV Center. HTDV information and tips for your Plasma, LCD projection and home theaters with information for everything related to your HDTV. Visit HDTV Center now.

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Plasma

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March 27, 2009

How Do Plasma Televisions Work?

Plasma TVs have been one of the most popular home entertainment solutions on the market for several years. They offer outstanding resolution and a quality picture and are usually capable of displaying HDTV signals, allowing you to watch all of your favourite HDTV programs. Compared to rear projection TVs, plasma technology offers some of the best viewing angles- no need to fight over the best seat anymore- and offer uniform screen brightness.

But how does plasma technology work? It’s pretty simple. Some form of inert gas- say Xenon, for example, is inserted between two plates, which are held together, between which are over two million pixels, capable of producing a mind-boggling array of colors. The gas is then energized by a charge which turns it into a viscous substance, creating an ultraviolet light, which allows each pixel to display the appropriate color. Unlike rear-projection TVs, each pixel in a plasma display contains red, blue, and green phosphors, there is no need for a cathode-ray tube. In traditional TVs, the cathode-ray tube, or CRT, fires electrodes to the screen, where they excite phosphor atoms causing them to light up, thus creating a picture. The CRT is bulky and is responsible for the box-shape of traditional televisions. For example, if you want to increase the size of the screen in a CRT, you must also create a larger cathode-ray tube, therefore making the whole TV that much bigger- and bulky.

One drawback to plasma technology is the inability to recharge each individual pixel. Each pixel is an independently sealed entity, as is the plasma display panel and the gas, so if a pixel, or a group of pixels, fail or darken, the entire panel unit must be replaced.

Fortunately, however, you can expect your plasma display to last at least 60,000 hours of playing time, before the pixels begin to darken. So, in layman’s terms, if you watch your TV for four hours a day, you can expect the panel to last around eighteen years.

Plasma technology has greatly increased the quality of home entertainment, ushering in a new era of television technology.

About the author:
Tom Ace is the founder of Plasma tv Resources a website providing information on plasma televisions

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