Plasmas and LCDs, flatter and lighter than tube televisions, are also less difficult to manage than traditional CRT (or tube) televisions. Though, on average, they are a hefty 5 inches thick and 100 pounds, recent advances in plasma technology will soon cut their thickness down to an inch and their weight down to 45 pounds. Consumers can now take some liberties in the placement of their plasma TV’s. Plasmas can easily be mounted on walls or placed on smaller stands.

Resolution, the quantity of pixels on the television screen per square inch, is also a key component of televisions. Flat screened televisions boast a much higher resolution than CRT televisions, which yields clearer images on the screen. High definition plasmas have resolutions that range from 1024×768 to 1920×1080. This is much better than even the maximum resolution for tube televisions, a mere 480 lines.

Flat screen televisions also have a longer life span than CRT televisions. Most plasma manufacturers now assert that their televisions have a life span of up to 60,000 hours, where CRT televisions have a life span of at least 5 years. Assuming that a consumer watches 3 hours of television a day, a plasma TV can last up to 55 years!

Color reproduction and contrast ratio are two important components of a clear picture. Plasma televisions excel in both; they produce richer, more vibrant colours and truer blacks than LCDs. Due to the backlighting in LCDs, any pixel that should be black will have some light leaking through, which spoils the contrast.

The image of both LCDs and plasmas is comparable when viewed directly in front of the screen. However, plasma televisions have a wider viewing angle than their counterparts. Backlighting causes this problem in LCDs; the image on the screen degrades as the viewing angle increases. Plasmas can be viewed from the sides or top and bottom.

Many worry about the possibility of burn-in images on plasmas. This occurs when a still shot is shown on the screen for too long. Afterwards, a faint outline or trace of the image may still be visible on the plasma’s screen. However, this should not be a serious problem with newer models, as manufacturers have worked to eliminate the burn-in effect.

Unlike tube or LCD TVs, plasma TVs are not limited in size. Consumers (with large enough budgets) can order plasmas up to any size. However, CRTs and LCDs are usually restricted to about 52 inches in diagonal.

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Exactly what is an LCD TV? LCD stands for Liquid Crystal Display. This is the same technology that has been used for some time for camera screens and cell phones. It is constructed of two panels of glass-like material, which are bonded together. One layer is coated with a special polymer which contains the liquid crystals. An electrical current is run through the crystals which can turn dark or allow light to pass through, thus creating the picture.

Although LCD and plasma TV’s look much alike, their technology is entirely different. Plasma televisions are comprised of individual cells. Each of these cells is filled with neon-xenon gas. When electricity is passed through the cells, it strikes blue, red and green phosphors to react. Each group of these phosphors is a pixel, or picture element; one tiny part of the whole image.

Until recently, LCD TV’s have been more popular in the smaller sized televisions. This is partly because technology caused the prices of the larger screens to be much more expensive than the smaller sets. However, technology is constantly improving and now there is less of a price difference, making the large-screen sets more available to the average consumer.

Many consumers wonder if they can use their LCD TV as a computer monitor. Most of them can be, due to the fact that LCD TV’s are an outgrowth of the LCD computer monitor. The majority of TVs have the VGA input connections necessary to be integrated into a PC. Gamers like to integrate their PC and game systems in order to have a large screen to play their games on.

Many consumers desire to keep their old VCRs even when purchasing a new TV. These VCRs will integrate with the new TV, thanks to the standard connections, however there is one issue to keep in mind. The resolution on a VHS tape is much lower than that on the TV, which will result in poorer colour quality, as well as a grainier picture than the consumer has seen on their old, analogue television.

If you decide to purchase an LCD TV, choose the right place in your home for it before hand. That way, you can purchase the correct stand or hanging bracket at the same time. LCD TVs have internal speakers, but you can integrate your LCD television with your home theater system. Be sure that you have the correct cables, and provide power surge protection for your new television.

LCD panels are thin and take up little space in your home, as well as using less power than a conventional or plasma TV. You can expect long life, in excess of 60,000 viewing hours, and a brilliant, clear image. The LCD television is definitely a wise purchase.

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A lot of the myths about plasma screens have to do with damage that can happen to the screen when images are left to linger or when the television is turned off. Another concern is that picture quality can lessen when you are watching from other angles in the room. Actual testing done on the quality of plasma screen televisions offers a completely different picture.

Burn in and image retention are just two of the terms you will seen thrown around on the internet as things to watch out for when purchasing a plasma television. These are the terms that describe damage that can happen to a television screen if it is stuck on the same picture for too long, like being on pause, or the image that stays on your television once you turn it off.

If you look at the actual research you will find that image retention rarely last more than 24 hours and has little, if any, long term effect on your plasma TV screen. Testing also shows that images have been left on pause for days and no permanent damage was done to the screen.

The exceptional colour accuracy and black levels in a plasma screen television offer superior picture quality no matter where you are in the room. Testing debunks the claims that the image quality on a plasma screen television decreases when watching from an angle. In fact the testing shows that the plasma screen television offers the highest possible quality in comparison to other types of televisions on the market.

Testing further showed that plasma television screens have better depth and realism in the clarity of the picture image quality. Watching movies on a plasma screen television offers a more accurate representation of what the movie directors had intended their audience to see.

There is much more to choosing a great value in a new television than finding the lowest price in town. Real value is the best quality that you can find for the money. You have to be sure to consider the picture, sound, and overall quality of the product in order to ensure you are getting the most for your hard earned money.

When looking solely at pricing, you may find that plasma screen televisions are a bit more expensive than other types available for purchase. You will also find, however, that for the extra money you will be getting a television experience that is superior to any other. Check out the facts for yourself before you decide on a new television and you will find that a plasma television is amazing quality at a decent price.

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Most of the major television brands cost a little more than the dirt cheap LCD TVs and plasmas you might find online. This is by virtue of having a brand name reputation to uphold. Cheaper manufacturers often create knock-off brands based on the more popular names or constantly rebrand themselves so negative word of mouth can’t spread for their company.

Buying a Cheap TV: When’s and Why’s

Obviously, if reliability is a priority, then a cheap television is probably not the best buy. A brand name TV set should last a good, long time without any major hassles for the customers. It is important to remember, though, that brand names doesn’t have to be synonymous with expensive! A savvy shopper will be able to find cheap brand name televisions without any frustration.

Cheap TV sets aren’t entirely worthless, however. A TV that only lasts a few years might not be a downside when you’re in a situation where you don’t plan on using a cheap television for long. Rather than buy a new television that’s going to be disposed of soon, buying a cheap, low quality TV could be the perfect solution. For instance, college students who’ll soon be moving out of the dorms might prefer a shorter-lived television that can be disposed of guilt free in a few years.

Cheap LCDs and Cheap Plasma TVs: You Get What You Pay For

Not all televisions are created equally. Customers who choose a cheap LCD or cheap plasma TV over a more trusted name will immediately see a difference in quality. Buying a cheap LCD TV or cheap plasma TV will result in over saturated images and other problems. This will be extremely noticeable during programs or movies with lots of quick movement or filmed in dark locations.

This is due to the necessity for high quality manufacturing in these types of televisions. Buying reducing costs, customers buying a cheap television will see dull blacks and ghosting of their images. A cheap plasma TV will have difficulty displaying dark colours in general, so keep that in mind when contemplating a purchase. Although some businesses might want to buy cheap plasma TVs, most customers will want to stick to better quality televisions.

Overall, most customers will have a better experience with name brand televisions compared to cheap TVs. However, there may be certain situations where buying the cheapest television available will make sense. Just take a little bit of time and review what you need before making a purchase and the decision should come easily.

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When it comes to flat screen TVs the two technologies LCD and Plasma seem very similar with almost lifelike images and the ability to be hung on the wall. Although LCD tvs and Plasma tvs panels may look very similar in the stores, there are various differences between the two technologies.

LCD screens explained

The LCD tv screen is a thin flat display device and is made up of a two clear panels which have many colour liquid crystal filled pixels that are arranged in arrays in between them. When a small voltage is applied to the crystals they twist or untwist repositioning themselves so that light can either pass through or it is blocked. When millions of crystals do this a picture is displayed. Very little power is used in this process. Behind the screen is a back light that illuminates the pixels and displays a colour depending on their colour (either red, blue or green), also areas of light and dark spots are displayed depending on how they are positioned. LCD devices are available in small sizes for items such as a watch up to 108 inches. Most television manufacturers produce LCD television including Hitachi, JVC, LG, Panasonic, Pioneer, Philips, Samsung, Sharp, Sony, and Toshiba.

How plasma tvs works

A Plasma tv screen comprises of millions of minute ‘light bulbs’ which are tiny glass cells filled with inert gases such as xenon and neon. These cells are lit by a current being applied to electrodes in the gas filled cell and its atoms become ‘excited’ to a plasma and emit photons of ultraviolet light. These photons in turn hit a phosphor coating which emits visible light. The colour of the visible light emitted by each cell depends on the three different coloured phosphors – red, blue and green, and can together produce billions of colours when combined. As with the LCD tv screen, the millions of cells intermix to form the image on the screen. Currently the only manufacturers of Plasma tvs in the UK are LG, Samsung, Panasonic, Pioneer, and Philips. Plasma tvs are existing in sizes from 32 inches to 150 inches.

Performance and Picture quality compared

The Brightness of the picture

The picture on LCD tv screens can be brighter than Plasma tvs. Depending on where the television is located and what is being viewed will determine how this difference in screen brightness is perceived. However both Plasma tv and LCD tv screens are capable of producing brightness levels that in normal viewing conditions are in excess of what is needed.

Contrast Ratio and Black Levels

The difference between the extreme of light and dark tones is known as the contrast ratio. Usually the greater the contrast ratio is the more details can be differentiated. In the past LCD tv screens were known to have lower contrast ratios than plasma tvs due to the pixels not being able to totally block the back light on darkened pixels and light would bleed through and make the image lighter. New methods of reducing this light leakage have been introduced on the latest LCD tv screens so that the contrast ratios are closer to those of a Plasma tv. However Plasma tvs are still better because their pixel cells can be switched off, rather than blocking the back light with LCD tvs, and blacks are blacker. The black levels on a television underpins the overall picture quality. If the blacks aren’t black enough then the whole colour palette or colour saturation is affected so that the colours appear artificial rather than life like. The black level on an LCD tv is more dark grey when compared with the black level on a plasma tv.

Colour Saturation

This is a gauge of the correctness of the colours on the screen based on the presence of grey shades – the higher grey shades results in lower colour saturation. Plasma TVs have high colour saturation due to the way they emit light. The capability of Plasma tv pixels to be turned off when they are not in use stops the emission of stray light that diffuses colour. This is why tints and hues on Plasma TVs are noticeably more vivid and vibrant

The Colour Gamut

Is the breadth and number of colours that can be displayed. The most expensive models are now claiming to have colour gamut’s getting rather close to the full spectrum for plasma tv and LCD tv. In fact most plasma TVs have a propensity to be better than most LCD tvs except the top of the range ones. With the cheapest LCD tv models more often than not offering a colour gamut that isn’t as good the higher LCD tv models. So by and large the plasma tv has the best colour gamut.

Resolution

This is the amount of pixels that make up the screen. The higher the resolution is, the higher the definition and the sharper picture is. Currently, LCD HDTV’s produce the image at’20 pixels x 1080 pixels, full 1080p resolution at a lesser cost than plasma tv panels of the same size. There is no difference in an HD LCD tv or Plasma tv for screen sizes above 37 inches. However plasma tv screens of 37 inches and below are currently only HD Ready but LCD tv models are available from 32 inches upwards in full HD or 1080P.

Refresh Rate and Response Time of the screen

These two attributes in combination determine how fast a moving picture a screen can reproduces without the image blurring. Response time is a gauge of how fast a screen can change when an input is received. Historically LCD tv panels had slow response times which was the limiting factor causing motion blur because each pixel has to go from an on state, to an off state, and back to on in order to refresh an image. Improvements in pixel response times on LCD tv screens means that the actual response time isn’t the main cause of motion blur, its generally caused by the refresh rate, or the frame rate.

Lower model of LCD televisions and Plasma televisions operate at a frame rate of 50hz or 50 frames per second. In fact until recently, before 100hz models were launched, all models operated at 50 Hz. Now on more expensive models of LCD tv and Plasma tv motion blur is reduced with the addition of 100hz which create an extra frame that is placed between the normal frames. Because a normal signal is 50 Hz an additional middle frames is created by signal processing software that interpolates what the extra middle frame should look like. This results in picture motion that is more fluid and looses little if any definition. However the best Plasma tvs still show fast moving images better than the best LCD tvs but the difference is narrowing because the LCD tvs response time has reduced and 100hz and 200hz models have been established.

Viewing Angle

This is the maximum side angle that a viewer can see the image on the screen clearly. Plasma tvs usually have a viewing angle of between 160 degrees to’0 degrees whereas LCD tvs have a viewing angle of around 100 degrees after which the picture dulls.

The surface of the screen

Plasma tvs have reflective shinny screen surface which can be affected by glare depending on the viewing conditions. Lcd tvs have a matt finish which reduces glare.

Burn-in

For Plasma tvs With prolonged displaying of non-moving images, graphics or text, such as a menu bar, channel logo, or news scroll a permanent ghost image can be permanently burned on the screen with a darkened appearance. SO even if the image on the screen is changed or removed it can’t be removed for the rest of the plasma tvs life and is always seen as a shadow image. Regardless of how long a static image is displayed on an LCD tv they aren’t affected by burn-in. But the problem of burn-in is exaggerated and unlikely under normal viewing.

Image retention

Numerous people mix up burn-in with image retention which is very similar. With image retention the ‘ghost image’ disappears quickly either as soon as a new, bright image is displayed or after a few seconds. image retention is infrequently noticed but normal on plasma tvs because of the technology utilized, but it can be minimised by having a ‘break-in’ period when the plasma tv is first bought. The break-in period usually lasts 100 hours, during this time you should not view any programs that do not fill in the whole screen, and you should notview any programmingthat have static images such as bright station logos or news scrolls at the base of screens, and you ought to lower the contrast and brightness to a middle point. Nowadays there are also features built in to the plasma tvs to lower the likelihood of either burn-in or image retention.

[b]Is there any difference in power consumption of LCD tvs or Plasma tvs ?[/b]

The backlight on an LCD tv is constantly on so the power consumption is almost constant. By manually adjusting the brightness of the back light up or down the power consumption is either increased or decreased. The twisting and untwisting of the LCD pixels consumes hardly any power.

Though Plasma tvs charge a gas to a plasma to produce light. The more light that is necessary the more often this is done. So it’s usual for plasma tvs to need more energy on an image with high levels of brightness, and less energy on low brightness scenes. Consequently the power consumption varies.

The energy requirements that are quoted for Plasma tvs are for full brightness settings. The effect of this is that lcd tvs seem to use less power than plasma tvs. But the power consumption of a plasma tv varies depending on the amount of dark and bright areas on the displayed image. Studies have found that when the viewed programs are mainly dark or on movies the amount of power consumed for plasma tvs will be lower than an lcd tv. However when the viewed programs are sports and cartoons the power consumption for plasma tvs is greater than on lcd tvs. When varied programs are viewed the power consumption is similar for LCD tvs and Plasma tvs. Future plasma tvs are going to consume less than half the amount power consumed at present.

Life expectancy

Plasma tv manufacturers are at this momentquoting statistics of 100000 hours for the life expectancy. This represents a running level of just about 11.5 years of non stop use. As a result any concerns about the life expectancy of plasma tvs being less than LCD tvs are unfounded.

Conclusion

Both technologies have advantages. Plasmas tvs typically have a superior subjective picture with healthier black level, higher contrast, and better colour rendering than LCD TVs. While LCD TVs have higher brightness, and no screen burn-in worries, and are lighter and thinner. This is not always the case sincea good LCD TV might have a better picture than an middling or poor plasma TV. But on balance I consider that a plasma tv is the better option with more advantages. Ultimately you get what you pay for so spend as much as you can find the money for on you preferred format.

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Any review of LCD TVs can not be complete unless you talk about their durability. These are machines that are highly durable, as long as you take good care of them. They don’t burn out quickly and they hold their good form for years. Likewise, you will need to discuss the size that you want. LCD televisions come in a big range of sizes. They are anywhere from 17 inches to 70 inches on today’s market.

In addition to just talking size, you need to talk about the resolution in LCD TVs. It goes without saying that most people buy an LCD TV because of the clarity it provides. Whether it is a 17 inch TV or a big one, you are probably going to be getting-66 X 768 capability. This is important, because it provides LCD TV owners with the chance to enjoy high definition at its finest.

One of the cool things LCD televisions is that they don’t have the big problem of burn-in. With some plasma screen TVs, things can become burned into the actual screen. This means that numbers of images will appear if you leave a television on a certain channel for too long. With an LCD TV, this is no longer a problem.

When you talk to most consumers today, they are thinking about 1080p. That is the newest style of display and it’s what people are paying the big bucks for. You will have to pay more for these LCD TVs, but you will reap the rewards of excellent high definition. This is what it takes to watch blu-ray and HD DVDs the right way.

Likewise, lots of consumers want to know just how long they can expect to have their LCD TVs. What is their lifespan, they ask? It depends upon the brand and the actual television in question, but five years is a pretty good time frame to shoot for. At that point, a new technology will likely be out that you will want to upgrade to anyway.

There are some new technologies being developed that television buyers will want to know about. Many LCD TV’s are now coming with what is known as “no-blur” technology. This helps to keep action shots as clear as possible, and is one of the main draws for LCD television makers these days.

The majority of LCD TVs today are providing lots and lots of great features to consumers. They are taking television watching to a new level, and they’re more affordable than they’ve ever been. For people who want to experience the best, there is no other way to do it.

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If youve thought about purchasing an LCD television, you probably have quite a few questions. Factors to consider include available screen sizes, longevity of the product, clarity of the image, and whether the television will be compatible with existing add-ons such as a VCR. Lets take a look at the LCD television.

LCD (Liquid Crystal Display) is familiar to anyone who already owns a digital camera or mobile phone, but most people don’t understand how it works. An LCD screen is comprised of two panels of a clear material, which are glued, or bonded, together. A polymer compound, which contains the liquid crystals, is layered onto one of the panels. When an electrical current is applied to the panel, the crystals either let the light though, or turn dark, thus creating the image.

With their thin panels and similar shapes, many consumers assume that plasma TVs are the same as LCD. In reality, their technology is quite different. Unlike the LLCDs, plasma screens are made up of individual cells which have been filled with a gas. Electrical current running through the cells causes a reaction. Green, blue and red phosphors react, forming pixels, which we see as the complete picture.

For some time after the introduction of LCD television, the plasma TVs still cornered the market in large-screen televisions. Although the smaller screen televisions were popular, the LCD technology made the large screens more expensive. The technology has been refined to the point where the large-screen LCD TVs are now comparably priced, and practical for the everyday shopper.

Since LCD TVs are so similar to the LCD computer monitor, buyers often wonder if they can be integrated with a PC and used as a computer monitor. Most of the LCD televisions do have the VGA input connections that will allow this integration. Gamers, especially, enjoy using the large screens with their computers to enhance their game-playing.

You may have older auxiliary devices such as a VCR, and wonder if they are compatible with the LCD televisions. They will work together, since most LCD televisions have standard AV connections. However, a VHS tape, with its lower resolution and poorer colour quality, will not look as good on an LCD TV as it did on a smaller analogue television.

If you decide to purchase an LCD TV, choose the right place in your home for it before hand. That way, you can purchase the correct stand or hanging bracket at the same time. LCD TVs have internal speakers, but you can integrate your LCD television with your home theater system. Be sure that you have the correct cables, and provide power surge protection for your new television.

LCD TVs use less power, and emit less heat, than a conventional or plasma television. They last a long time, more than 60,000 hours of viewing time can be expected, and give you a vivid image. In addition, their slim design means they can be displayed just about anywhere. Purchasing an LCD TV is a shrewd decision.