LED HDTV televisions?
January 29th, 2010
A Z asked:
Can someone tell me more about this new technology? I read that they are better for the environment because they use 40% less power than an LCD, they have clearer pictures and sound. But are they better for sports (like Plasma)? And what does it been by DLP? Is it different than HDTV?
Can someone tell me more about this new technology? I read that they are better for the environment because they use 40% less power than an LCD, they have clearer pictures and sound. But are they better for sports (like Plasma)? And what does it been by DLP? Is it different than HDTV?
January 30th, 2010 at 10:49 am
Ok guy check it out…Plasma is a dead technology….it burns out and if you leave a movie paused on a plasma TV, it would burn the image into the screen. You don’t want that. LCD HDTV’s are great…they took the flaws of plasma TV’s and got rid of them. Trust me…the extra dough is worth it when buying an LCD HDTV.
February 1st, 2010 at 10:28 pm
It is a new technology and I ve seen them and been to a training where they talked about them but have yet to see one up and running so not many folks will have a recommendation yet. They are better on power consumption. The are rated at either 120 or even 440 hrz< toshiba> and the Blacks are supposed to be almost a sharp as a Plasma but we will have to wait and see if all this pans out or is only Hype.
February 2nd, 2010 at 5:38 am
They’re really lcd tvs with LED backlights (unless you meant to say OLED which is a new technology that I haven’t seen yet but there are few of them and they’re very expensive at the moment). They do use less electricity (not 40% less but less) and have better blacks. The ones that I have seen have better imaging, contrast, and black levels than regular back-lit LCDs and are close to plasma pictures. They still suffer from motion blur but have gotten so much better. Any tv that displays a 720p or better picture is considered HD. 1080p is considered “full hd”.
February 2nd, 2010 at 9:54 am
it still amazes me that people really don’t know a thing about plasma tv’s. plasma is not a dead technology and in fact has been perfected in the past few years. they do not burn out! their longevity is just as good as a lcd (that’s 100,000 hours of use, which is decades of daily use)! THEY NO LONGER HAVE AN ISSUE WITH BURN IN! personally for the price i would buy a plasma any day, and as long as they continue to make them, i will never buy a lcd. BTW i have a panasonic and would highly rec, i love my tv.
as far as LED back lite tv’s, this is a fairly new technology. most lcd tv’s use a white light for their light source which is always on. the filters in the tv must filter out the light to make it appear to produce black colors. this is why lcd tv have lower contrast ratings because the light is always on.
the light source for the LED tv’s are thousands of LED lights. three colors are used, green red and blue LED’s. this allows, like a plasma for the light in certain areas to be completely off, which gives better color control and higher contrast ratios.
the only issue with this technology is that indiviual LED’s will burn out or become less bright over time. this can lead to an image where the colors are not uniform.
as of now since the tech is so new, so one really knows at what point this will start to happen. 3 years? 5 years? 10 years?
as far as speed of images, it still suffers from lag like most lcd tv’s. the higher screen refresh rates are making things better with taking care of motion blur and lag on lcd tv’s, but they are no where close to plasma. the fastest lcd is around 2 ms for a response time, where typical plasma response time is tenths to hundredth’s of a ms.
for dlp tv’s, these are referred to as rear projection tv’s and are typically bigger and heavier. most use a white lamp back light that shines light through a spinning color wheel to produce the color palette. dlp tv’s have also gone to led back light to help improve color palette and contrast ratio. overall dlp’s do suffer from motion blur like lcd’s.
February 3rd, 2010 at 6:06 am
Samsung’s Series 9 LCDs use LED backlighting. I have yet to see one side to side with a plasma so I don’t know how they compare. However, I do know a 46″ LED-backlit LCD is about $2,500 compared to $1,500 for one that isn’t.
February 6th, 2010 at 6:27 am
L.E.D.’s do not beam white light, but rather its three basic building blocks: red, green and blue. Beams are emitted in a narrow band of wavelengths very close to those of single, pure colors, giving off the brilliant, saturated red of a blazing sunset or the shimmering, luminous blue of a rainbow.