The Advantages of Buying an LCD TV

What does LCD TV mean and how does it function? LCD stands for liquid crystal display. Behind the screen are a number of pixels followed by a fluorescent light. When this light falls on the pixels, an electric current is generated, creating light variations, which make up the vividly colored images that we see. Generally, the twisted nematic liquid crystal is used which has a naturally twisted crystalline structure.

The screen size of an LCD TV varies between 13-46 inches and it is about 2 inches deep in thickness. They are very light and so extremely easy to install. This indicates that they require very little space and come with a very sleek look. In fact, they can very well be compared to the fragile beauty of a woman!

Next is the consideration of the 'burn-in' factor. LCD TVs are not susceptible to 'ghosting' which results due to premature dying out of the pixels. The uniquely twisted crystals do not allow 'burn-in' or 'ghosting' to happen.

There has been a marked improvement in the refresh rate or response time of LCD TVs. Previously, the images tended to lag behind and stay on screen for a period of time that was much more than necessary. Recent technological advances have put all that behind. Usually, the response time varies with the size and quality of the LCD TVs.

The contrast ratio in the more advanced LCD TVs is 1000:1. The contrast ratio is measured by the ratio between the brightest white to the darkest black. The scenario has improved here too. Research is on to push the ratio well past the 1000:1 mark.

Sixty-thousands hours is the average life span of an LCD TV. So at an average viewing of 8 hours a day, an LCD TV should last for about 20 years. The life span of an LCD TV is dependent on the back-light. Since it uses a liquid crystal, there is nothing else which can wear out other than the back-light. Technology has found a way around this problem by creating replaceable back-lights as well.

Power consumption, which is perhaps a very important aspect, has a definite advantage in case of LCD TVs. LCD TVs utilize fluorescent back-lighting and so power consumption is low and steady.

LCD TVs are unaffected by changes in air pressure. This makes it a favorite among air travelers. The performance is consistent and the picture flawless, regardless of the altitude of the airplane.

There is much talk about mercury being used for the fluorescent lighting. But, the manufacturers will vouch-safe for the fact that a nominal amount of mercury is used. This mercury does not come in contact with the viewer and so is entirely harmless.

Some manufacturers are trying to incorporate picture-in-picture feature in their monitors. This feature enables a viewer to see one program on the full TV screen while a few other programs can run in small windows in it. The viewer gets the added advantage to watch a particular program, while waiting for the intermittent advertisements to end in another window.

Experiments are on to extend color reproductions in LCD TVs. The idea is to use two back-lights with slightly differing intensities of colors in consecutive frames. This will enable the viewer to experience a better and a more vivid picture using a more precise color variation.

An LCD TV is a whole new experience, the flavor of which can be savored only by purchasing one. The advantages are manifold and the experience is just exotic. Indulging in one is a worthy bargain.

Roberto Sedycias works as IT consultant for Polomercantil

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Advantages of LCD Televisions

Those who shop for a flat panel television with small screens prefer LCD for obvious reasons. One of the important factors is the energy efficiency. When comparing with Plasma, which is also a flat panel category, LCD consumes 30 to 40 percent less energy. Such low power consumption is a favourable feature that attracts consumer attention in the present scenario where energy has become very expensive. Televisions between 14 to 42 inches are chosen by the consumers who want more than one in their homes in view of their low power consumption. There is plethora of other reasons for people to opt for LCD television.

Liquid Crystal Display televisions generate less heat even if it is switched on for long time. Heat generation is an agonizing experience for those television addicts who watch it for extended hours. In screen brightness LCD has few, if not no parallel in the television markets. It has no problem of ambient light interference like some other televisions and therefore it is suitable for well lit rooms. But there were problems of shorter viewing angles in the early models of LCDs which caused negative impacts on its popularity. Technological up gradations helped to improve the viewing angles in the latest models. Most of the latest LCD televisions offer 160 degrees of viewing angles adding comforts to the viewers especially when more people watch it together. Another remarkable advantage of LCD is that it can provide High Definition output with superb colour saturation. Enhanced response time and refresh rates in the LCD make it free of motion blur. It is also free from electro-magnetic radiation. High contrast ratio and longer life span are other positive factors associated with the LCD technology.

The innovative Natural Light Technology as well as the LED back lighting are two new factors which contribute to the qualitative superiority of the LCD television. The new backlighting could further enhance the contrast ratio to 50,000:1. With VGA (PC) input connections which are incorporated in most models of LCD monitors, it has been acclaimed as a suitable one for computers too. Even though LCD television is considered as an expensive product, taking into account the energy efficiency and viewing comforts, consumers find it more economical in the long run. Absence of maintenance cost is also a positive factor in this context.

Many new LCD television models from leading manufacturers are now available in the global markets. Philips Cinema 21:9 is a 56 inch LCD TV which is an expensive product but according to some reviews it will be the ultimate answer to those who will not be satisfied with second best among home theatre systems. This stylish product with a sturdiest remote control and Ambilight button will offer excellent viewing. The 52 inch Sony Bravia EX1 is another LCD TV with 1080i wireless connectivity. LG-32LF700 is a 32 inch HD Ready 1080p LCD Television with HDMI and USB connectivity options. Toshiba has their 332 inch LCD TV with 1080p full HD which is comparatively cheaper among the innovative products. Samsung and Panasonic are also having several models of LCD TVs at various price ranges. Screen sizes varying between 14 to 65 inches are readily available, many of them with special backlight systems.

Consumers can visit special websites which deal with LCD television exclusively. Comprehensive product reviews will be helpful to identify the right LCD at an affordable price.

Checkout best LCD TV prices, compare cheap LCD televisions and find expert reviews on 30 Inch LCD TVs, Daewoo, Panasonic, Sony bravia LCD TVs at LCD TV reviews website.

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Plasma Or LCD - Whats the Main Advantages of a Good Plasma Like the Panasonic TH42PX80?

Here are some thoughts on the benefits of choosing a Plasma HDTV. It should be remembered that these are general statements and will vary between makes and models.

Black/Contrast Levels

One of the most important factors and certainly what the experts always check first is that of black levels. Generally black Levels have traditionally been best on Plasma screens primarily due to the way that the screens create contrasts - LCDs will alter crystals to block light whereas Plasmas modify the power to each pixel - as such Plasma screens are usually far more effective at displaying blacks. The gap between the best plasmas and LCDs has certainly narrowed recently with some of the best LCD screens from Sony, Samsung and Panasonic rival the top plasma screens for the depths of their blacks and contrasts.

Angle of Viewing

The first LCD screens were very poor in this respect - basically you had to sit within a pretty narrow band to view the TV properly. Plasma screens have a much wider viewing angle (up to 160 degrees). Again the gap between the two formats has reduced dramatically with most LCD screens have pretty good viewing angles however is this is of a primary concern for you then generally Plasma TVs have the advantage.

Color Displays

A much closer call and in essence the winner in this respect is probably down to individual preferences. Plasma screens contain individual blue, green and red pixels so have potentially have an advantage creating accurate color depth but the LCD screens have an advantage of creating colors by modifying light and as such produce a brighter, clearer display that many individuals prefer.

Brightness

This is where the LCD screen is a clear winner - LCD can produce white light much more easily than plasmas and utilize much less power in doing so. This can lead to white and bright scenes looking much crisper on an LCD.

This is a very brief summary - but again it should be remembered that a bad plasma screen would lose in all categories to a quality LCD. But the above points are worth bearing in mind before you make your purchase.

Joe Simpson - Technology Specialist and Film Buff

Likes these Plasma screens for great value and performance.

Samsung LE40A656 - Panasonic TH42PX80

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