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LED High Definition Televisions |
Article Submitted by: Ian Tyrrell
Saturday, 08 August 2009
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Watching television is a favourite pass time to people all over the globe. In fact, using the TV to play games and watch movies has become such an important part of the lives of society, that manufactures continue to search for ways to enhance the television experience. In most cases, this includes a clearer picture, a bigger screen, or better sound. All of these aspects are wrapped up into the latest TVs inventions known as the LED high definition television. This drive toward giving viewers a more enjoyable TV watching experience has lead to the latest in trends, the LED television. In basic terms, a LED TV can exist as a LCD TV that uses Light Emitting Diode (LEDs) to clarify the picture screen display or as an LED TV which uses complete LEDs. LEDs more effectively direct light in one direction than fluorescent or incandescent bulbs. In a LCD TV, the LEDS are either placed along the back of the screen or around the edge of the screen. When the LEDs are used along the perimeter of the display screen, the term edge lit is labelled to the product. The methods of LED technology that manufacturers use for creating LED televisions create two different perspectives for viewers. When the LEDs are placed along the side of the televisions, the screen depth size capabilities are reduced greatly. The screen can be thinner due to the lack of LEDs in the back. An edge lit TV also costs less than a back lit LED TV. However, when the LEDs are used across the back of the televisions, deeper and darker blacks are formed. The LEDs can actually be shut off so no light comes through. In the television world this is referred to as local dimming. The cost of the clarity and color improvements with a LED HDTV comes with a cost. An upgrade to one of these televisions may cost the buyer up to $4000. Yet, with the upgrade the viewer gains much intensity in action films and gaming. LED TVs are more efficient at creating excellent pictures of fast motions. The LED HDTV manufacturers also claim that television cuts energy consumption by 40%. When comparing the three competitors for top quality televisions, plasma TVs, LCD TVs, and LED TVs are the three to compare. Plasma TVs are known for their incredible viewing angle. However, they have received great heat from their reflective screens. LCD TVs still own up to great picture quality. However, none yet have toped the LED TVs in capturing and portraying perfect color and clarity. The LED screen has allowed for the capabilities of larger, wider screens. These LED screens are composed of many LEDs combined to form small dots or pixels. A color LED screen has three colors of LED pixels. The pixels are red, green, and blue. When put together, these pixels form white. One single meter of a LED screen can house over 9000 pixels. The number of pixels per meter is determine by the pixel pitch, which is the distance between each pixel. The smaller the pixel pitch in an LED screen, the higher definition the viewer receives and the higher cost the buyer pays. In addition to LEDs making their way into the world of television, they are now breaking ground with the LED monitor. The once popular flat screen LCD monitor has been outdone when it comes to color accuracy and precision. The LED monitors are created without metal that is found in other bulb type monitors. NEC is one of the first to put the LED monitor on the market with a cost reaching up to $6000 or more to purchase. It appears that LED has made its presence known in the world of electronics and does not intend to leave anytime soon. However, over time consumers should see reduction capabilities in the size of LED screens along with a reduction in cost. Article Source: http://www.ArticleBlast.com |
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