led tv of the future

If you are thinking of buy a LED TV then first you have to remember these things because you are going to spend around $1500 to have it. Any market has lots of competitors; there is nothing new in the electronic market also. Every company gives his own opinion about his product. They describe many things about his product but never tell any default. But there are some defaults also behind every technology. You have to decide the right prouct and company for your sweet home.There are many feature are included in the new LED technology like low power consumption, brightness and quality of the image. The Improvements Now that we've established that this is LCD TV with an LED backlight. Let’s look that how this new technology of TV improves on current TV technology such as standard LCD and plasma.
Get a glimpse of the future with the Sharp Aquos LC40LE600E 40 Full HDLCD TV, a fantastic example of the new breed of LED-backlit flatscreentelevisions! This cutting-edge HDTV offers outstanding picture quality at aprice you can afford. The star of the show is the 40-inch LCD panel with LED backlighting. Thisbreathtaking display boasts a Full HD 1920 x 1080p resolution, with anincredible native contrast ratio of 4,000:1 and dynamic contrast of 2,000,000:1 - ensuring beautifully cinematic imagery. The high contrast is complemented by the 176-degree viewing angle of theSharp Aquos LC-40LE600E, which allows everyone in the room to enjoy thestunning image. The ultra-bright white LEDs in the backlight provide a luminance of 450 cd/m2,which is more than enough to punch through bright ambient lighting conditionsduring sunlight hours. The Sharp Aquos LC40LE600E 40 Full HD LCD TV is practical too, with achoice of 3 HDMI connectors, twin SCART sockets, composite, component, and evenPC input (D-Sub) for using the TV as a giant computer monitor. It includes abuilt-in digital Freeview tuner to extend your entertainment possibilities yetfurther, and with a power consumption of just 72 watts in operation, its up to40% more efficient than

Samsung vs. Sony - led tv

Samsung vs. Sony - led tv

The new XBR10 LED backlict LCD TV series includes Sony's new Ethernet Connection with the useful Amazon on Demand feature and later Netflix, while we have not yet seen the big benefit in the Bravia Internet Widgets feature which enables some proprietary stock, weather, financial news types of information. One very unusual feature of this TV is the wireless outboard receiver
It is more than natural that many would tend to compare Sony and Samsung HDTVs.

These two major brands represent the world's largest TV makers in the LCD TV industry.

Despite the presence of a third contender to the 'BEST' title in LED LCD TVs, yet for whatever reason, LG with its 47-inch 47LG90 did not spur much interest - at least among videophiles and home theater communities.

It is not because LG is not worth considering as a TV brand. We have already expressed our views on LG in the first part of this article. We believe that the heavyweights in the industry need to keep an open eye on LG as it will surely pose some serious competition in the not so distant future.

Rather, this whole interest in Samsung vs. Sony is more a consumer loyalty issue. There is the tendency among Sony and Samsung customers that if either of these TV makers happens to be your brand, then it is unlikely that you will opt for the other.

In addition, Samsung and Sony are the two world leaders in the field of HDTV - so it is logical that one would tend to compare products between these two brands.

And to continue fuel up this Samsung vs. Sony debate, there happens to be a significant difference in the pricing of their respective LED LCD TV lineups.

So... It is more than natural that one would ask if Sony's extremely expensive XBR8 series is better than the cheaper Samsung A950 series of LED LCD TVs?

In other words, is the expensive price tag associated with the Sony LED LCD TV sets a true indication of their picture performance, and does it reflect the difference in picture performance - if any - between the two brands?

And if price reflects performance, is it really worth paying an extra $2000 more for a Sony 46-inch LED LCD TV, or $3000 more for the Sony 55-
If we were to summarize the performance aspects highlighted in our discussion on these Samsung and Sony LED LCD TVs, it would soon become clear that both HDTV lineups are capable of exceedingly deep levels of black for an LCD TV - something which is so much important for a great picture and rich saturated colors.

Also, both LED LCD TVs come with highly accurate colors, solid video processing, loads of picture controls, superb connectivity, an attractive design, and equally important at a time when energy prices are so high, very low power consumption thanks to their LED backlight.
Sony Bravia KDL-46XBR8 46" 1080p 120Hz Triluminos LED LCD HDTV


On the negative side, both LED LCD TVs suffer from similar picture performance issues. Blooming - though subtle - is common to both. In this respect, expert reviews confirm that the Sony can do a slightly better job but the difference becomes noticeable only in a side-by-side comparison.

However in our opinion, this subtle blooming issue is not much of a concern. Instead, what really matters is the deterioration in picture quality with off-angle viewing. These big screen LCD HDTVs are not made just for personal viewing - yet their picture deteriorates considerably just moving some three feet away on either side of the best seat.

In other words, it is normal to have your family and friends joining in. The problem here is that anyone not within the optimum viewing position would never enjoy the best picture that these LED LCD TVs may offer.

The hard truth is that some of the latest premium CCFL-based LCD HDTVs can do a better job with off-angle viewing than these cutting-edge LCD TVs! However, if one wants to differentiate between these two giants, the Samsung LED LCD TV takes the upper hand - but just slightly, in that while both sets exhibit discoloration with blacks as one moves away from the center seat, yet colors on the Samsung remain more neutral than those on the Sony.

There are other significant differences as well between the Samsung A950 and the Sony XBR8 LCD HDTVs. The black levels on the Sony are just a bit closer to the absolute black level than those on the Samsung. At the same time, the Samsung video processing is just a bit better than the Sony with fewer artifacts. On the other hand, the noise reduction on the Sony is rated as superb and is a bit better than that on the Samsung...

The Sony is not capable of deinterlace 1080i film-based content correctly while its standard definition performance is average for a flagship HDTV from a top brand. The Samsung here pass both tests with flying colors.

In favor of Sony, its matte-screen can do a much better job when viewing takes place in a brightly lit room; the reflective screen surface on the Samsung may turn into a mirror-like surface when viewing dark content under a brightly lit environment - which can turn out to be extremely annoying.

Samsung comes with a host of interactive features which the Sony lacks. In addition, the A950 has better file support over its 'supposedly' DLNA compatible network connection than that available on the Sony. We say 'supposedly' because the Samsung DLNA feature works only with the supplied Samsung DLNA server software. In contrast, that on the Sony is truly DLNA compliant despite its limitations in that one can only use it to retrieve JPG files over the home network from compliant DLNA devices.

Well, the difference in picture performance between the Sony and the Samsung LED LCD TVs is... insignificant. Ultimately, it is the picture that matters most - and in this respect, both Samsung and Sony LED LCD HDTVs are great performers by any standard and irrespective of display technology.

Admittedly, the image deterioration issue with off-angle viewing on both the Samsung and the Sony is preoccupying and should be taken into account when taking your decision. The fact that this is common with both is a clear sign that there are still a few issues which need to be resolved by LCD TV makers before one can say that LCD LED backlighting technology is truly the greatest display technological development since color television.
For 2010 the Bravia NX800 lineup from Sony features a 1080p240Hz panel with LED edge lighting and a full suite of Bravia features including picture processing, internet connectivity and home entertainment integration. All of this in the stylish look of Sony's "Monolithic Design".

We are not saying that this is not the right time to buy an LED LCD TV - after all, when it comes to picture quality, LED LCD HDTVs can really deliver exceedingly deep black levels and accurate colors that surpass any CCFL-based LCD HDTV. It is just that these are issues which one needs to be fully aware of before plunging into such a heavy investment.
Sony's top of the line offering for 2009/2010 is the XBR8 series LCDs. In addition to many of the standout features present on the XBR5, XBR6 and XBR7 the KDL-46XBR8 and the larger model have a local dimming feature for improved contrast in "localized" areas of the screen in order to enhance contrast in some areas while leaving it as is in others. This is accomplished partly through use of the new LED backlight contained in the XBR8. It's an interesting feature and we're looking forward to testing it as soon as this model (due out in September or October of 2009/2010) comes out. Another step up feature of this LCD is LED (light emitting diode) backlighting (rather than the standard fluorescent style bulbs). This will drastically improve the brightness and thus the contrast of the LCD over other models. Sony calls this specification TRILUMINOS RGB LED because it contains all three color LEDs. Also present in the KDL-55XBR8 and the 46 inch model are the DLNA compliance feature for more natural color rendition, and of course the ubiquitous specification for all new Sony LCDs – the ever present optional colored speaker grille.

This just leaves one significant difference between the Samsung and the Sony LED LCD TVs, and that is their price tag.

LED TV today...

As I noted a few days ago, L.E.D. lighting has become the lighting industry’s new Next Big Thing, with industry proponents predicting that it will eventually knock compact fluorescent lights off their perch as viable alternatives to standard incandescent bulbs.
But there is another application that industry observers think L.E.D.’s will also come to dominate: television displays. In a new research report from Insight Media, a flat panel research firm, the company is predicting that by 2011, cost reductions will spur a switch to L.E.D. illumination for L.C.D. TVs.
Today, rear-projection TVs typically use bulbs to illuminate their screens, which dim over time and need to be replaced. L.C.D. TVs usually use cold compact cathode fluorescent lamps (C.C.F.L.), which limit color rendition.
L.E.D.’s, on the other hand, provide a wider range of colors, do not need to be replaced, use less power,and do not contain polluting mercury, as do C.C.F.L.’s.
But using L.E.D. as a lighting source for TVs has its own problems. Many of the current L.E.D.-lit displays use up to 10,000 L.E.D.’s mounted as a grid on the back. If 100 or so are defective, it could affect light output. Plus, it adds to the set’s bulk.

Traditionally the name of TV screen technology is used before the name TV. For example, CRT TV is the TV that contains Cathode Ray Tube (CRT) technology in the display screen. Similarly Plasma TV is the TV that employs plasma display technology in the display screen. Laser TV means the TV that employs Laser technology for displaying images on the screen. Projection TV means the TV that projects images on an ordinary white screen. The images in this case are generated by any one of the technologies like, Digital Light Processing (DLP), LCD, Laser, CRT etc,. In the same way LCD TV means the TV that employs Liquid Crystal Display (LCD) technology for its display screen. Since LCD does not generate light, it needs a backlight for the images to be seen on the screen. All along- and even now- Cold Cathode Fluorescent Lamps (CCFLs) have been employed in LCD TV for backlighting LCD. Since CCFLs are not flat light sources, they require a 'light guide' to convert the linear CCFL light sources to flat light source. CCFL in combination with light guides and some optical films is called CCFL backlight. Currently CCFL backlight is the dominant backlight technology and the price is low. Recently, in the last three years LEDs have started replacing CCFL as the light source in Notebook and LCD TV. LEDs have substantial advantages over CCFL and the most attractive features for the end-user are (1) low power consumption (2) high quality images (3) low weight (4) slimness (5) long life. The recent advertisement that calls LED TV is nothing but LCD TV whose backlight technology is based on LED technology. The display screen still employs LCD technology. (The display screen is NOT made of LED technology). There are two types of LED backlight. One type is called the 'edge-lit' version and the other is called 'direct-lit' version. Edge-lit version means the LED light sources are assembled at the edge of light guide, either on two edges or on one edge. Generally white LEDs (a discrete LED emitting white light) are employed in edge-lit mode. The overall thickness of the light guide can be as low as 2 mm. These white LEDs are nothing but blue LEDs coated with a phosphor that converts blue light to yellow light. The blue light from the LED and the yellow light from the phosphor combine to give white light. Since the white light is not rich in red and green, the color images seen on the LCD screen is not of high quality and can be at best the same as in CCFL back-lit LCD screen. But the substantial advantage is in the low power consumption and slimness together with long life of over 50,000hrs (recently 70,000 hrs). The direct-lit LED backlight consists of Red, Blue and Green LEDs assembled inside a reflective 'light box' with unique lenses on top of LEDs and a few optical films and diffuser at the top of the 'light box'. In this case, the white light is produced by mixing red light, blue light and green light from LEDs inside the 'light box' and directing the mixed white to the back of the LCD. This white light has a rich red, blue and green spectrum coupled with low values of Full Width at Half Maximum (FWHM) of the peak wavelength emitted by the RGB LEDs. This property in combination with the color filters employed in LCD gives the viewer a superb color quality of images. The color quality is expressed in terms of U'-V' domain area which is more than 120%. In addition, the 'direct-lit' LED backlight lends itself for ease of dimming certain area of the backlight (local dimming). For example when the user is viewing dark scenes on the LCD screen, there is no need for the Backlight to waste its power to illuminate dark areas of the screen. The backlight needs to illuminate only the bright objects contained in the dark scene. This means the backlight needs to adapt to the incoming video information. This is also termed as 'adaptive dimming'. In this mode of dimming, the power consumption is further reduced. Through this description, one will be tempted to think that the bright portion of the scene under view will also be dimmed. This is not true because there is a compensation provided for bright pixels not to become dim. In spite of this there are extreme image situations where the compensation also is not adequate. However the performance of 'Adaptive dimming' or 'local dimming' provides a quantum jump in the enhancement of images on LCD screen in terms of color, contrast, absence of motion blur and grey level. Color quality of images will be superior to plasma screen and power consumption can also be low. The slimness of ‘direct-lit’ backlight is not as good as ‘edge-lit backlight because of the ‘light box’ and mixing of colors. For large area of LCD TV (46”-65” diagonal) 100ds of LEDs are needed for both ‘edge-lit’ and ‘direct-lit’ modes. This involves ‘binning problems’ in the selection of LEDs and thermal problems in running at high brightness. White LEDs are cheaper than RGB LEDs. Direct-lit backlight employing RGB LEDs increase the cost of LED-lit LCD TV (LEDL LCD TV). White LEDs can also be employed in ‘direct-lit’ mode for the purpose of increasing the brightness and not color quality. This can reduce the price of LEDL-LCD-TV. LCD TV with screen sizes in the range of 40”-65” have been introduced with LED backlight. Sony and Samsung are the leaders in LEDL-LCD TV. Sony-JVC joint venture, Samsung, Vizio, Sharp and others are having their LCD TV models with LED backlight. The penetration of LEDL-LCD TV will also give a boost to LED backlight manufacturers like, Stanley Electric. Omron. Citizen, Nippon Leiz,,Toshiba Matsushita Displays,. WooYong,. Welly Power,. Several Chinese companies, Several small companies Forhouse. Taiwan Nano Electro-Optical Technology,.Kenmos Technology. Radiant Opto-Electronics Coretronic, Lumex, Forward Electronics. LED manufacturers like Lumiled/Philips, Osram, Toyoda Gosei, Cree, Epistar, Everlight, Seoul Semiconductors, Nichia and many others will be beenfited by this likely explosive growth. Going back to the chain, suppliers of MOCVD equipment for the manufacture of LED chips, like Aixtron and VEECO will gain increased orders for MOCVD equipment. This in turn will go back to the saphhire substrate and SiC substrate suppliers to the LED industry. Many small LED packaging houses stand to benefit in LEDL-LCD TV.

Luminus, a Massachusetts solid state lighting company, thinks it has the solution. The company has created much brighter L.E.D.’s, which allow it to mount just 24 L.E.D.’s on one or two sides of the display’s perimeter, and then use a plastic panel to distribute the light. The fewer the number, the lower the cost. And according to Alexei Erchak, the company’s founder, L.C.D. TVs can potentially be made thinner than today’s sets using his “edge-lit” approach.
Mr. Erchak says that he will begin supplying L.E.D.’s to some of the major television manufacturers later this year, with products in the marketplace by early 2009.
And according to Insight Media, the cost of L.E.D. light sources for TVs will soon drop like a stone. Today, C.C.F.L.s cost about $188, with L.E.D.’s at $290. But by 2011, L.E.D. will have closed the gap; the price of a C.C.F.L. unit will drop to $121, but a typical L.E.D. unit will only cost $136.
These potential improvements prove the point made in the late 1990s by Joseph Flaherty, a CBS executive and one of the pioneers of HDTV, when he famously said “Today’s HDTV images are the worst HDTV we’ll ever see.”