Plasma Televisions

Plasma TVs are comprised of two sealed glass panels, which contain neon-xenon gas. Turning on a plasma TV charges the gas particles, striking red, green, and blue phosphors. Charging these gas particles creates the picture on screen. Panasonic televisions are some of the premier plasmas on the market.

LCD Televisions

LCD TVs are composed of two layers of transparent, polarised materials. One layer is coated with a polymer containing specialised individual liquid crystals. When one turns on an LCD TV, current passes through the crystals, which either allow light through or block it. This is what creates the image. To work, a source of light is necessary; manufacturers usually use fluorescent bulbs.

LED Televisions

LED TVs are really a type of LCD TVs - both use the same kind of liquid crystal display screens - but Samsung televisions differentiated between the two and the naming caught on. The primary difference is their light source. Instead of fluorescents, LED TVs use light-emitting diodes, which allow for deeper blacks, better contrast, and a wider range of colour. There are two types of TVs backlit (or full-array) and edge-lit.

BacklitFull-array LED Televisions

Backlit TVs contain rows of LEDs, spaced a few inches apart. A diffuser ensures that light spreads evenly across the screen. This spacing allows for local dimming, a process whereby LEDs can be dimmed individually or in groups. Local dimming allows dark portions of the screen to be darker while bright portions stay brighter, offering significant contrast improvements over LCD televisions. Because of this, backlit LED TVs match or surpass the contrast of plasma televisions.

Most manufacturers use white LEDs, but some Sony televisions use groups of closely-spaced coloured LEDs, which can potentially offer a wider range of colour. Sony televisions marketed with Triluminos technology have this arrangement.

Edge-lit LED Televisions

Edge-lit TVs have LEDs arranged along the edges behind the LCD panel. Light beams inward, toward the middle of the screen. A light guide plate then reflects the light outward to the viewer. Edge-lit LED TVs can utilise local dimming, but the LEDs can only be dimmed as a group. Thus, edge-lit LEDs can't match the deeper contrast of backlit TVs, but they can be slimmer. At the very high-end, however, the difference in thickness can be negligible.

The choice of LED, LCD, or plasma TVs depends on individual needs, but sales of LED TVs are expected to outpace LCD TVs in 2014.

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Sony TVs are built to last and often receive higher consumer reviews than other television leaders including Panasonic televisions and Samsung television. Unfortunately, there are many Sony televisions to choose from and choosing the one that best suits your needs takes a lot of consideration.

When looking at either a plasma TVs or LCD televisions, the first consideration that should be taken into account is television resolution. To be considered HD TVs, all televisions must have a resolution above 720p, although today most high-definition televisions come with at least 1080p. The higher the resolution, the better the television clarity will be, although the higher resolution televisions are often twice as expensive. An added benefit of purchasing a television with higher resolution is that you will be able to enjoy all of the benefits which come with Blu-ray DVD players and the latest video game systems.

When you are shopping for LED TVs or plasma TVs, another consideration which must be taken is contrast ratio. A contrast ratio is the measurement between the lightest light colour and the darkest dark colour. The higher the ratio, the more impressive the television will appear. To be safe, you should select a television with a contrast ratio of at least 10,0001, although several new LCD TVs manufactured by Sony, have contrast ratios approaching 15,0001.

The next consideration that needs to be taken is the size of the television. Sony high-definition televisions range widely in size from 20 inches up to 60 inches. While most people instinctively want to purchase the largest television they can afford, purchasing a small television may make more sense. If you have a smaller room, and will be sitting within 12 feet of the screen, you should select a television which is 42 inches or smaller. Also, if you do select a larger screen TV, it is quite important that you select the higher resolution option to ensure clarity.

The last consideration when looking at TVs is connectivity. Most HDTVs come with at least HDMI and S-Video connections, but depending on your needs, more connections may be needed. You should also look for televisions which have a composite connection, component video splits, and, DVI inputs.

Find a range of electrical products including; Sony televisions, LED TVs and Plasma TVs from leading brand names.