Product review by user

LCD, or liquid crystal display, televisions use a unique form of technology to produce their display, and although early models had a number of technological issues, those issues have largely been overcome, and these days there are excellent quality LCD TVs available from virtually every manufacturer of electronics in the world.

The earliest models of LCD televisions often had problems with “ghosting”, especially when displaying fast action or fast moving imaging, and these early televisions were best viewed straight on or from a slight angle. These early problems have been overcome by advances in technology, and LCD and plasma TVs are making serious inroads on the traditional CRT (cathode ray tube) television market.

The prices of LCD televisions have come down quite a bit as well, even as the technology they use has continued to improve. These days the least expensive, small screen LCD TVs can often be purchased for a couple hundred dollars, while the largest displays sell for several thousand dollars. There are even larger LCD displays on the market, as large as 65″ and even more, that may sell for $10,000 or more. If price is no object it is possible to find an LCD TV for virtually any taste.

The advent of these large screen LCD TVs is another indication of how much the technology has improved in a short period of time. When LCD technology was first being developed, the conventional wisdom was that it would be suitable only for small size televisions, and that the LCD technology would not be able to compete with plasma screens for larger sets. These days, however, ever larger LCD TVs are being developed and introduced, by the likes of Sony, Sharp, Samsung, Phillips and others.

The modern LCD TV is good for much more than watching TV, and the best sets on the market come with a multisystem tuner, which allows the machine to display not only the NTSC format common throughout North America, but the PAL and SECAM signals that are common in other parts of the world. In addition, many LCD TVs include a step down and step up transformer which can automatically use either 110 or 250 volt AC current, as well as universal grounded adapter plugs for added versatility.

In addition, virtually all modern LCD TVs on the market today are capable of displaying the latest HDTV (high definition television) and DTV (digital television) signals, and most can also be used as a computer monitor, by connecting them to a VGA or DVI signal. Those TV shoppers planning to use their new LCD TV as a monitor should be cautious, however, since the quality of the resolution can vary widely between brands and models.

LCD TV Considerations

Those in the market for an LCD TV to replace a traditional CRT TV should be aware of the differences in the technology, and what those differences mean in terms of viewing pleasure and lasting value. LCD televisions based on the PVA and S-PVA LCD panel are able to deliver a very good viewing angle at up to 140 degrees, and they also can provide a good contract ratio for viewing both light scenes and dark ones. The downside of the PVA and S-PVA technology is that they often have problems with “ghosting” when the scene moves between different shades of dark.

Traditional CRT televisions to not have this problem with “ghosting” since the phosphor contained in the CRT is charged by the strike of a beam of electrons, and it emits most of the light in a fast period of time, generally less than 1 millisecond, compared to a refresh period of about 20 milliseconds. For an LCD TV, each pixel emits light of a set intensity for a period of about 20 milliseconds, in addition to the time it takes to switch to the next state, which is typically between 12 and 25 milliseconds.

This response time, also known as the response time, can be shortened by the design of the panel, and by using overdriving technology, but the response time can only be cut down to the length of the refresh period.

Getting the response time equal to the refresh period is generally sufficient for watching films and television programs, but for videos shot at 50 or 60 frames a second there can still be some ghosting issues with some LCD TVs.

Fortunately, there are a number of emerging technologies within the world of the LCD TV, and these technologies promise to eliminate some of the ghosting and other issues that have been encountered by owners of these TVs. The first solution on the horizon is to make the backlight of the LCD panel fire during a period of time that is shorter than the refresh period. The goal is to make this period of time as short as possible, and to time it for when the pixel has already settled to its intended level of brightness. This technique, however, also introduces the problem of flicker that is so familiar to users of CRT computer monitors. This flicker problem occurs because the human eye is able to see flicker at the typical 50 or 60Hz refresh rates used in this technology.

Another emerging response to the problem is to double the refresh rate of the LCD TV, and then to reconstruct the intermediate frames using a variety of motion compensation techniques. This second method is being extensively studied on the new high end televisions currently being designed in Europe.

No matter what type of LCD TV technology you decide to buy, however, it is important to shop around for the best possible price. These days even discount retailers often sell some very good LCD TVs, and of course many electronics stores are virtually replacing their existing stock of CRT TVs with the newest in LCD and plasma screen technology. As with any major purchase, it is vital to shop around for the best deal, and to read the reviews of each model carefully. As with any piece of electronic equipment, the quality of an LCD TV can vary quite widely from model to model and brand to brand.
For more information see: http://www.planetomni.com

110-220 Volt Electronics - A multisystem TV is a TV capable of receiving and displaying different video systems like PAL, SECAM and NTSC. You’ll be able to operate a multisystem TV in 99% of the world. Their dual voltage design allows them to be plugged into either a 110 voltage source or a 220 voltage source. In some cases, the plug on the television will not fit your country’s outlet, so an inexpensive plug-adapter will be needed. They can generally be picked up at an electronics store such as http://www.planetomni.com for $1.95. With a multisystem TV, such as a plasma, CRT tube type, LCD or DLP, you’ll likely need a codefree (sometimes called region free) DVD player. These exist in many forms. When used with a PAL-NTSC TV you’ll be able to see the full 625 lines of resolution available in the PAL system and the full 525 lines used in the USA NTSC system. There exists a converting type of DVD player which is codefree in that it can read all of the world’s 6 regions and both standards, PAL and NTSC. 140,000 other products are available here: http://www.planetomni.com Tel. # 800-514-2984

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Are you yearning for a flat screen TV but can’t decide which kind is better; this article will look at plasma vs. LCD TVs and the specific features of each. Plasma TVs may have a slight edge over the LCD TVs for now, but LCD TVs may soon take over as king of the flat screen world and win the plasma vs. LCD TV match off. The following is a break down comparison of plasma vs. LCD TVs.

Plasma had gotten an early lead in the plasma vs. LCD TV game on producing large format TVs such as the 42 and 50 inch models. Because they have been around slightly longer, the price for these larger models has already begun to drop $5,000 plus as the price we saw several years ago, all the way down to $2,500 or less today. This earns plasma one point in the plasma vs. LCD TV match off.

Until recently, LCD TVs were unable to produce anything much larger than 30 inches. That is now changing though and LCD TV manufacturers are now coming out with more and more 42 and 50 inch models which will create competition in plasma vs. LCD TVs.

The most popular size is the 42 inch and this is the size that manufacturers are producing more and more of in the plasma vs. LCD TV battle. Due to this overproduction, we will begin to see an even greater drop in prices of the 42 inch models. Currently in the plasma vs. LCD TV battle, plasma wins on the price because of their head start on producing the larger models. In the next couple years however, LCD TVs will be slashing prices even more and giving plasma a run for their money in the plasma vs. LCD TV match off.

If you are a customer who enjoys multimedia benefits in the same electronics source then LCD TVs beat out plasma in the plasma vs. LCD TV battle thanks to their PC inputs and memory sticks that allow you to use the LCD TV screen as a computer monitor. You can also play MP3 audio files and share pictures from you digital camera on many LCD TVs today. You will also get crisper graphics and text on a LCD TV rather than a plasma, which is perfect for any video game fan. As far as multimedia capabilities are concerned LCD TVs earns a point in the plasma vs. LCD TV game.

Why are LCD TVs are gaining an edge in the plasma vs. LCD TV battle? For one thing, LCD TVs have a longer life than plasma TVs, beating them out by about 20,000 life hours. Also, LCD TVs do not have the problem with burn-ins that plasma TVs face. LCD TVs gain a point in the plasma vs. LCD TV match off simply because they will last longer. While the 42 inch TVs rule for now, another plus about LCD TVs is that they are able to produce small and portable models also which is very popular among families with children who go on long car rides.

While they won’t destroy plasmas altogether, LCD TVs will definitely win the plasma vs. LCD TV popularity contest as their prices drop and reliability increases in the next couple years.

Visit http://www.relcdtv.com to learn all about LCD Television and the new lcd tv trends and information.

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What is an LCD Display?

LCD is short for liquid crystal display, and while LCD technology has been around for quite some time, it has been only in the last decade or so that the technology became suitable for the high quality flat panel television and computer monitor displays we see today. The most notable feature of displays using LCD technology, of course, is the thinness of the unit, but the power behind that thin design is actually quite extensive.

The display on an LCD panel is comprised of picture elements, or pixels as they are known to computer geeks everywhere. The resolution the flat panel display is capable of is determined partially by how many pixels are contained in the display. A typical LCD panel display can range from hundreds of thousands of pixels to millions of pixels, and the higher the number of pixels the better the resolution will be. LCD televisions come in a number of different shapes and sizes, but they are typically designed to accommodate a 16 to 9 display ratio. This ratio makes them perfect for watching widescreen displays like DVDs, as well as traditional television shows.

What are the Differences between LCD and Traditional TVs?

LCD televisions, flat panel computer monitors and other devices have a number of built in advantages, and it is these advantages that have made them such a hit with technology buyers everywhere. Some of the many advantages of LCD technology include:

*Brighter display - the displays on LCD televisions are brighter than those on a traditional CRT television, due to the special way these displays work. While a traditional CRT television or monitor uses a tube to create the display, the LCT TV uses pixels, providing for a brighter display.

*Flicker free performance - the display of the LCD television or computer monitor will also be free of flicker, since the LCD display will have a constant source of light throughout the entire screen. Once the pixel is turned on it remains on. Contrast this to the design of the CRT television or monitor, which must refresh the screen periodically with a ray of light moving down the monitor or TV.

*Low power consumption - another big advantage of the LCD TV is its superior energy efficiency. LCD televisions will be up to 65% more energy efficient than traditional televisions, helping to protect the environment while saving you money.

*Ultra slim design - it is of course the thin and sleek design that turns heads and gets the attention of buyers. LCD displays can be as thin as 49mm (just over 19 inches), meaning that these TVs can be placed virtually anywhere.

*Wall mountable designs - Many LCD TVs are so thin that they can be hung on the wall as you would hang a picture. It is important of course to purchase a wall mounting bracket that is suitable for holding the weight of the unit.

A Guide to Some LCD TV Terms

If you are in the market for an LCD TV, you will likely hear a number of new, and sometimes confusing, terms bandied about. It is important to understand what these words mean to you, the television technology shopper.

*Aspect Ratio - the aspect ratio of the TV helps to determine its suitability for watching movies and television programming in true widescreen format. While the traditional television has always used a aspect ratio of 4:3, i.e. 4″ wide, 3″ high, the typical LCD television uses an aspect ratio of 16:9, providing a truer widescreen picture perfect for watching DVD and VHS movies, as well as traditional television programming.

*Candela - one of those words you may hear from time to time is candela. Put simply, the candela is a standard unit of brightness, and it is equivalent to the number of candles that would be required to produce the same intensity of light. Therefore a rating such as 450 cd/m2 means that it would take a concentration of 450 candles in a square meter area to produce the same amount of light.

*Contrast Ratio - the contrast ratio is simply the difference in intensity of light between the darkest black and the brightest white on the display. The higher the contrast ratio the sharper and cleaner the picture will be.

*HDTV - high definition television, or HDTV for short, is quickly becoming the standard for television signal technology, and it is important to look for an LCD TV that is HDTV ready.

*Inputs - the TV inputs are important if you plant to connect a DVD player, VCR, game console, computer or other device to the LCD display panel. There are many different types of inputs, and it is important that the TV you choose provide a number of different options for getting signals to the device. A TV with a great many inputs will allow you to connect a number of different devices to the TV, greatly enhancing its versatility and its value.

It is also important to make sure that LCD TV you choose has the proper tuner for playing the TV signal you have coming in to the house. Many plasma screen and LCD TVs will lack a built in tuner, meaning that they will need to pick up that television signal from a cable box, satellite TV box, DirectTV signal or other similar device. It is important to make sure you understand the type of tuner that comes with the TV you are considering, and it is important to purchase all the accessories you will need when buying the TV.

Speaking of accessories, it is important to buy only the highest quality component cabling to connect that LCD display to your DVD player, VCR, Laser Disk player, computer or other device. The highest quality cables will provide the best picture and sound quality, which will further enhance the display of the LCD TV you have chosen.

It is also important, of course, to get the very best price you can on the LCD TV you want. The suggested retail price of the typical LCD TV will vary according to a number of factors, such as the size of the display, the thinness of the display and the quality of the manufacturer. It is important to shop around as much as possible, and to read the reviews of all the models you are considering.

Finally, the ability to play several different television signal formats, such as PAL, NTSC and SECAM, is an important consideration. Different parts of the world use different formats for television signals and video products, and buying one of these multisystem LCD TVs is a good way to make it more versatile and useful while getting the best value for your money.

For more information see: http://www.planetomni.com

110-220 Volt Electronics - A multisystem TV is a TV capable of receiving and displaying different video systems like PAL, SECAM and NTSC. You’ll be able to operate a multisystem TV in 99% of the world. Their dual voltage design allows them to be plugged into either a 110 voltage source or a 220 voltage source. In some cases, the plug on the television will not fit your country’s outlet, so an inexpensive plug-adapter will be needed. They can generally be picked up at an electronics store such as http://www.planetomni.com for $1.95. With a multisystem TV, such as a plasma, CRT tube type, LCD or DLP, you’ll likely need a codefree (sometimes called region free) DVD player. These exist in many forms. When used with a PAL-NTSC TV you’ll be able to see the full 625 lines of resolution available in the PAL system and the full 525 lines used in the USA NTSC system. There exists a converting type of DVD player which is codefree in that it can read all of the world’s 6 regions and both standards, PAL and NTSC. 140,000 other products are available here: http://www.planetomni.com Tel. # 800-514-2984

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