Should You Buy An LCD TV?

One big advance in modern video technology is the LCD TV. Let face it, few homes today are without a TV set, and when the old one goes caput, they will most likely end up having to buy either an LCD or plasma TV. LCD TV's are based on the same technology as many of the things we already have in our homes, such as digital alarm clocks and calculators.


LCD TV's offer much brighter and higher contrasts than the old CRT models. LCD TV's also reduce glare on the screen, which
can be hassle on the old sets, especially if you are watching something filmed in a dark background or environment. Reducing the glare also helps to counteract the negative effect
that watching TV has on your vision, caused by eye strain. It is important to pay close attention to the dot pitch offered by
these TV's, as the lower the dot pitch, the better picture and clearer resolution you will have.

LCD TV's offer good value for your money because they tend to last a lot longer than most average TV's In testing, many have held up to over sixty thousand hours of play without
having any problems. That would equate to about fifteen to twenty years for the average TV use.

It is recommended to buy your LCD TV in a brand name, as they tend to be made with higher quality light sources, which will ensure you have high quality for the life of the set. Some
bulbs are replaceable in the event of a problem, but others can cause you to have to replace the whole set. It is important to
buy a well known brand name that has good warranty coverage on the bulbs, as you are likely to get better service should a
problem occur.

LCD TV's can be expensive, so you should definitely think about the price of the set in relation to the size of the screen. If you
desire a large screen TV, you will probably be paying quite a penny for an LCD TV that you will be satisfied with. But, on the
same thought, keep in mind that the picture quality is a lot better, meaning that you may be happy with a smaller screen if it fits your budget better.

As with any large purchase, it is a good idea to shop around and do your homework. Look at several of the same models from different dealers to negotiate the best price range. Keep
in mind to look at the customer service history of the company, as well as what warranty coverage they offer. The best price may
not always come with the best products or service. LCD TV's can be purchased online, but you should definitely make certain that
you are buying from a reputable dealer, maybe even checking with the Better Business Bureau before making your final choice. Remember, don't be afraid to ask the dealer questions about your purchase and warranty info, and if he seems unknowledgeable or reluctant to answer, take it as a good sign that you should do your shopping for your LCD TV elsewhere.


Article written by Angel Estrella.

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Angel Estrella

california home theater

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Buying a Flat LCD TV Will Cut Down on Your Electricity Bill

A flat lcd tv is also great because it offers the highest resolution of any tvs, and also because it has low glare, almost no glare at all. This is because the flat profile of a flat lcd tv means that, unlike a normal curved tv screen, which catches light from any direction and sends it to you in the form of glare, a flat lcd tv is only vulnerable to light ddisturbances from a particular direction, kind of like a mirror, and unless there is a powerful light source there right in that specific spot, the flat lcd tv will not reflect it back at you.


The reason it can have a flat screen is because a flat lcd tv does not have a cathode ray tube like a normal tv. A cathode ray tube, or crt, is basically a gun that shoots out electrons at high speed at the surface of a normal tv. These electrons strike a surface that flouresces, or glows, giving you a pixel on the screen. This means that a crt tv has to have a curved screen and enough depth to position an electron gun behind it to shoot the image out of the tv. A flat lcd tv, however, because it doesn't have a crt tube, but instead a light source with polarizing filters and a thin layer of liquid crystals between, it can be very thin and efficient.

It also uses up less power by far than a normal tv so, although initially, a flat lcd tv will cost more than a normal tv, eventually, that flat lcd tv will actually save you money by cutting down on your electricity bill. But the best thing about a flat lcd tv is the clarity of the image. Because there is no distortion from the curved screen that normal tvs have, you will simply never see a clearer image than on a flat lcd tv. Additionally, flat lcd tvs have better resolution than most normal tvs and clearer defined boundaries. This will make some difference in watching normal tv programs, but is most noticeable when you look at dvd movies, which are at a higher resolution than normal tv programs. If you are a movie fan like I am, flat lcd televison is the way to go without a doubt!

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Muna wa Wanjiru has been researching and reporting on Internet Marketing for years. For more information on Flat LCD TV, visit his site at Flat LCD TV

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What is LCD TV

The Video is about What is LCD TV, the guys will try to explain the LCD TV. the cost, and how expensive the LCD is.. have fun

SAMSUNG PLASMA TV PS42C91HX

The beautifully-designed Samsung Plasma TV C9 exudes an elegant, minimalist form. It’s not hard to be impressed by this beauty. And you’ll be further impressed when you switch it on



FEATURES OF SAMSUNG PLASMA TV PS42C91HX
• 42” Plasma TV
• HD Ready (1024x768 resolution)
• DNIe (Digital Natural Image Engine)
• 15000:1 Dynamic Contrast Ratio
• FilterBright
• Smart Frame Plus
• Silhouette Editor
• 2 HDMI, PC Input
• SRS TruSurround XT
• Anti Burn-in Technology
• Auto Wall Mount (option)

SAMSUNG LA40S81B

The S8 Series gives you the Samsung LCD TV’s classic and elegant design at its most affordable level. Yet it delivers the Samsung technology you want most.

The High Definition (HD) ready display lets you enjoy vivid, lifelike feel and detail. You get refined side speaker design with a high gloss frame that harmonizes with classic interior designs


The Features
• 40” LCD TV
• HD Ready (1366x768 resolution)
• DNIe (Digital Natural Image Engine)
• 7000:1 Dynamic Contrast Ratio
• 2 HDMI, PC Input
• SRS TruSurround XT
• Auto Wall Mount (option)

For more detail please click
http://www.samsung.com/my/products/television/lcdtv/la40s81b.asp?page=Features

Waterproof LCD TV

LCD and Plasma TV

LCD TV
Liquid crystal display television (LCD TV) is television that uses LCD technology for its visual output. The technology used is generally TFT. In the early 2000s, LCD flat-panels captured a large part of the computer monitor market from traditional CRTs. Continuing advances in LCD TV technology enable it to compete against Plasma flat panels and rear-projection televisions (DLP, LCD, and LCoS) for large-screen HDTV.

Early LCD television had drawbacks relative to traditional visual display technologies. It displayed fast-moving action with "ghosting" and could be viewed best only when looking directly at the screen or from a slight angle. These problems have largely been overcome in recent years, and LCD televisions, along with plasma displays, have taken over the dominant market position worldwide from cathode ray displays. The LCD design has the additional advantage of being more efficient in the use of electricity than the CRT design.

For a long time it was widely believed that LCD technology was suited only to smaller sized flat-panel televisions, and could not compete with plasma technology at sizes of 40" or larger. At the time, plasma held the edge in cost and performance. This belief has been undermined by the announcements of seventh-generation panels by major manufacturers such as Samsung, Sony, LG-Philips LCD, Westinghouse Digital, and Sharp Corporation:

* In October 2004, 40" to 45" televisions were widely available, and Sharp had announced the successful manufacture of a 65" panel.
* In March 2005, Samsung announced an 82" LCD panel.[1]
* In August 2006, LG.Philips Consumer Electronics announced a 100" LCD television [2]
* In January 2007, Sharp displayed a 108" LCD panel branded under the AQUOS brand name at CES in Las Vegas.[3]

Manufacturers have announced plans to invest billions of dollars in LCD production over the next few years, with televisions expected to be a key market. (The other main market for LCD displays is in computer monitors.)

Improvements in LCD technology have narrowed the technological gap with plasmas. The lower weight, falling prices, higher available resolution which is crucial for HDTV, and lower electrical power consumption of LCDs make them competitive against plasma displays in the television set market. As of late 2006, analysts note that LCDs are overtaking plasmas, particularly in the important 40" and above segment where plasma had enjoyed strong dominance a couple of years before. [4][5]

LCD screens produce very little glare from other light sources, as opposed to shiny plasma screens.

LCD Technology

LCD technology is based on the properties of polarized light. Two thin, polarized panels sandwich a thin liquid-crystal gel that is divided into individual pixels. An X/Y grid of wires allows each pixel in the array to be activated individually. When an LCD pixel darkens, it polarizes at 90 degrees to the polarizing screens.

This cross-polarizing blocks light from passing through the LCD screen where that pixel has darkened. The pixel darkens in proportion to the voltage applied to it: for a bright detail, a low voltage is applied to the pixel; for a dark shadow area, a higher voltage is applied. LCDs are not completely opaque to light, however; some light will always go through even the blackest LCD pixels.

Plasma TV

A plasma display panel (PDP) is a type of flat panel display now commonly used for large TV displays (typically above 37" or 940 mm). Many tiny cells located between two panels of glass hold an inert mixture of noble gases (neon and xenon). The gas in the cells is electrically turned into a plasma which then excites phosphors to emit light. It is often used in the home environment and is becoming increasingly popular in modern cultures.

Functional details

The xenon and neon gas in a plasma television is contained in hundreds of thousands of tiny cells positioned between two plates of glass. Long electrodes are also sandwiched between the glass plates, in front of and behind the cells. The address electrodes sit behind the cells, along the rear glass plate. The transparent display electrodes, which are surrounded by an insulating dielectric material and covered by a magnesium oxide protective layer, are mounted in front of the cell, along the front glass plate. Control circuitry charges the electrodes that cross paths at a cell, creating a voltage difference between front and back and causing the gas to ionize and form a plasma; as the gas ions rush to the electrodes and collide, photons are emitted.

In a monochrome plasma panel, the ionizing state can be maintained by applying a low-level voltage between all the horizontal and vertical electrodes - even after the ionizing voltage is removed. To erase a cell all voltage is removed from a pair of electrodes. This type of panel has inherent memory and does not use phosphors. A small amount of nitrogen is added to the neon to increase hysteresis.

In color panels, the back of each cell is coated with a phosphor. The ultraviolet photons emitted by the plasma excite these phosphors to give off colored light. The operation of each cell is thus comparable to that of a fluorescent lamp.

Every pixel is made up of three separate subpixel cells, each with different colored phosphors. One subpixel has a red light phosphor, one subpixel has a green light phosphor and one subpixel has a blue light phosphor. These colors blend together to create the overall color of the pixel, analogous to the "triad" of a shadow-mask CRT. By varying the pulses of current flowing through the different cells thousands of times per second, the control system can increase or decrease the intensity of each subpixel color to create billions of different combinations of red, green and blue. In this way, the control system can produce most of the visible colors. Plasma displays use the same phosphors as CRTs, which accounts for the extremely accurate color reproduction.

the article is taken from wikipedia.org