LED Display Screen

LED HDTV Technology Explained

2012-04-01T15:35:00.003-07:00

Today's televisions can be entirely unrecognizable from their earlier variations inside the marketplace. Up to now, the most hi-tech TV's which were around were the heavy, monochrome models. But these days, slender models complete with flat, colorful displays already are the fad. TV innovation could have just attained its peak with the arrival of those high-definition TV's that can generate realistic and also high-resolution pictures. HDTV's can be viewed as being a worldwide trend, with a number of companies launching superior-quality offerings at each launch date. And the newest improvement to this extensive line of fantastic technology is the LED HDTV. This particular kind of television provides enjoyment and also technology like no other.
What is a LED HDTV?
LED or Light Emitting Diodes is defined as a technology designed to enhance the backlighting of LCD HDTV's. While LCD TV's feature Cold Cathode Fluorescent Lamps (CCFL's), LED technology works by using numerous LED tubes set up all around on the edge or in the back of the TV screen. This lets the display screen to provide lighter and deeper colors for pictures and due to this, the images appear as a lot more lively and also realistic. All these (blank) tubes also allow this kind of TV sets to become slimmer when compared to other sorts of HDTV's, because the light source is often intentionally located right behind or on the sides of the display and the over-all size of the TV set greatly minimized. With a few diffusion layers and light pipes, slimmer LED HDTV's may be possible. You can even find LED HDTV's which can be just an inch thick. LED and LCD HDTV's tend to be different with each other because of the backlighting, with the previous making use of LED bulbs and the latter making use of fluorescent tubes. Using this, LED TV's offer considerably more attractive and innovative options when compared with their LCD counterparts do. A LED HDTV is practically just an LCD TV that integrates the LED technology. Nevertheless, most electronics manufacturers still choose to refer to these items as separate sorts of TV; nevertheless, in doing so it creates further misunderstandings to customers.
LED backlights can actually appear in 3 types, each one having its own layout of LED tubes inside the TV set. The 1st kind is Dynamic RGB LEDs that can feature colors at excellent contrast ratios. The LED tube backlights in this design are located at the back of the panel. Another one is full-array LEDs where the backlights are positioned at the rear of the display. Even so, full-array LEDs are incapable in displaying a quicker picture display since its LED tubes can't brighten or dim individually. Finally, there's also the Edge LEDs which provides a much more uniformly distributed color through the entire screen. Edge LEDs can produce images more accurately since their backlights are distributed throughout the display screen.
Because LED's can be individually controlled it is straightforward for the LED tubes to automatically turn off to show the deepest shade of black for its images, while on the other hand, lighten up smartly to brighten the display and deliver the correct contrast. Both of these functions of the LED tubes enable them to provide a remarkable contrast ratio throughout the screen. This equals improved, more lively and desired images.

In addition, you can find additional LED HDTV information at the LED HDTV website. This website is dedicated to providing you information about LED HDTV technology and helping you find the right TV for your home!

Article Source: http://EzineArticles.com/?expert=Gerald_Palatsky

Why a LED TV Is the Best Choice

2012-04-01T15:27:00.000-07:00

Flat panel display televisions have fully come into their own in this time leaving old-fashioned CRT tube televisions in the dustbin of last century. The emergence of high definition was the death knell for the old tubes as they could not be constructed in the wide 16:9 aspect ratio of that emerging format. Flat panels became the natural successor to old technology.

The Plasma Age
The flat panel has developed along several different technological lines. The early leader in the late 1990's was the plasma display. First publicly marketed around 1997, these 42 inch displays could cost a staggering $14,999.00. The prices dropped substantially after the first year or two and at the turn of the 21st century, the plasma display was the clear leader in the wide-screen television market. While maintaining a superior contrast ratio, plasma displays suffer from screen burn with static images. This was ameliorated but not eliminated in later models. This shortcoming makes plasma displays unsuitable as computer monitors. Additionally, plasma displays can only show up to 720p resolution.
The LCD Takes Over
Development of the LCD flat panel paralleled the plasma screen, but early efforts yielded an inferior product. It was not until 2006 that LCD screens began a serious assault on the market. LCD and plasma reached price parity in 2007 at which time the higher 1080p resolution LCD became the clear leader. This type screen had fewer limitations than plasma and used far less power.
The Bright World of LED
The LED flat screen television uses the same LCD type display but has a more efficient lighting system. The LCD display uses cold cathode (fluorescent) lighting for the screen while the LED screen uses light emitting diodes as the light source. These are more efficient and allow better contrast. More on LED TV's in a bit.
The 3D Promise
The latest iteration of the wide-screen flat panel is the 3D television. This development has exciting potential but like most emerging technologies, it has yet to deliver its full promise. A standard is still being decided upon and for now, we are presented with options using different viewing glasses to achieve 3D. There are early efforts at autostereoscopic sets which do not require glasses but the results are not yet mature.
The LED Advantage
LED televisions have exploded onto the marketplace in the last few years and have quickly earned a place of pre-eminence. Featuring display brightness and contrast that was previously only available on plasma displays (albeit at lower resolution,) the full 1080p LED sets have become preferred viewing for consumers in the know.
The LED display lighting comes in two main forms, edge-lit and full array. Both share the bright, crisp image of this technology but full array has a slight edge. Either method shares the advantages of more balanced color saturation, lower power consumption, a thinner profile, and no mercury (unlike fluorescent lit LCD's.)
For the clearest viewing experience, LED televisions are the obvious best choice.

Graeme is writing on behalf of Euronics - Toshiba LED and Toshiba 32 TV

Article Source: http://EzineArticles.com/?expert=Graeme_Knights

The LED Display Will Replace The LCD One In The Future

2012-04-01T15:20:00.002-07:00

The LED, which is regarded as the technology to light on the future, is entering people's daily life gradually. It will also drive the display field to have the revolution. The LED display has exceeded experts' predication. As a new emerging industry, the LED display has three billion of the output. The LCD displays will quite the historical stage as well as the CRT display.
Currently, the demand for energy conservation, miniaturization becomes very strong all over the world. And the LED display is perfect for these demands. The source of the LED is solid, small and light. It service life can be more than ten years. The efficiency of the LED can reach eighty percent to ninety percent, because its optical spectrums are all centered in the visible light. The LED display has been emerged for twenty years, but it has not been popularized in the previous ten years. With the development of technology and raw material, the service life and brightness have advanced by leaps and bounds, and the cost is also reduced. The performance of the LED also develops rapidly.
The progress of the LED technology is the largest driving force of its demand and application. At first, the LED is regarded as a mini indicator, which is applied in the high-class equipment, such as computer, acoustics and video recorder. With the development of large-scale integrated circuit and the computer technology, the LED display rises. Its application has extended to the digital camera, PDA, cell phone and so on.
The LED display integrated the micro electro technology, computer tech and information processing tech together. It has become the new generation of display medium with lively colors, high brightness and stability. At the present time, the manufacturers have produced the different kinds of screens, such as sports game screen, information transmission screen, news release display and so on. The LED screen has so many advantages when compared with the LCD display. The public areas, which use the LED display, will become the mainstream in future two or three years. The related integrated circuit is CDCEL949.

Li O Na is the freelance writer for e-commerce website in the integrated circuit. SeekIc.com offers the buyers around the world to find quality supplier of electrical components globally. We try our best to aggregate leads in the integrated circuit business world, and let these leads benefit the entire business person.

Article Source: http://EzineArticles.com/?expert=Li_O_Na

Head to Head Comparison - LCD Vs LED

2012-04-01T15:03:00.000-07:00

I do believe that you are already familiar how LCD display screen works, well, maybe not. But I'm pretty certain that you have seen one with your own eyes. You know that they are flat and lightweight. They also have black color flat screen and pretty stand. What is behind that pretty black screen?
As a matter of fact, both of those types LEDs and LEDs use very same technology for image reproduction. They have liquid crystal cell that is placed between two polarized filters through which current flows from one to another. Main difference here is type of backlight that is used for illuminating liquid crystals. LCDs use cold cathode fluorescent lamps for illumination, while LEDs use diodes.

In fact, when talking about LEDs, we may say that there are three different types of illumination used for image reproduction. We have RGB LED displays which use three different diodes (red, green and blue) for illuminating every single pixel on the screen, then we have two types of LED displays that use white diodes for illumination - Edge LED use white diodes that are placed around the rim of the monitor and Direct or Full Array LEDs that have white diodes aligned all over the panel matrix.
When we want to compare LCD vs LED monitor, we could say that in this case they are pretty similar with no major advantages for one or another type of display screens as computer monitors are mostly Edge LEDs. As they are based on same technology, they produce similar image quality, black levels and have similar color gamut. Main difference is in power consumption where LED monitors use less electrical power. Also, LEDs are brighter than LCDs as they have better contrast ratio. Since price is almost the same these days it is pretty much up to you to decide as picture quality, color intensity and sharpness divers from one device to another.
Conclusion: When selecting computer monitor, LCD vs LED technology and image quality are pretty much the same and it depends mostly of particular model and manufacturer quality.
On the other hand, when we want to compare LCD vs LED displays that are used for high definition TVs, in case that you shell out more cash and purchase Full Array LED screen you will get better black level, contrast and brightness than purchasing LCD screen. Well, when you take a look at the price tag in this case you should compare LED vs Plasma. In my personal opinion I would take plasma instead of LED.
Of course, both plasma and LED displays have their advantages and disadvantages, but in case that you are willing to spend around $1000 for living room TV, then plasma is better deal.
Conclusion: When looking for large display screen for your living room, it is better to go for plasma if you have cash to spare.

Many more valuable informations about LED monitors, comparison with LCDs and Plasma TVs, reviews, guides, tips and best deals are available on my website. Follow the link and learn more about LCD vs LED monitors.

Article Source: http://EzineArticles.com/?expert=Ayesha_Medina