What is the new Samsung LED TV about?

led tv backlight image

Tom

What is the new technology behind the samsung led tvs? Does the screen actually use LED to produce the picture? If so how much better is the quality?

Answer
sorry tvtech1 is off just a little bit.
LED LCD tv's are not OLED tv's.
there is only one in the consumer market, sony makes it and it is only 11 inches, larger models are expected probably in 5 years
this is the only difference between a regular LCD and a LED LCD
all LCD tv's prior would use a white fluorescent lamp for the backlight. the problem is there is one lamp and it has to be on all the time. the tv uses filters to create blacks and shades of whites and blacks. since the light is always on, this is why LCD tv's have a lower contrast ratio. it is very difficult to filter completely and depending on the quality of the filters, colors can blend and mash together.

on the new LED LCD tv's
instead of the white lamp backlight, there is a sheet of thousands of LED's behind the front screen which provides the backlight for the tv. since the tv can control each LED(there are red, blue, and green LED's) it can turn them on and off in sections which causes the higher contrast levels and more accurate colors over a regular LCD tv.
the LED LCD's are getting on par with plasma tv's in regards to the contrast and color accuracy

the only concern in the market right now is that LED's burn out inconsistently and since the tech is fairly new, it is unknown when this will start to happen, which will cause issues with the overall picture. will it happen in 3, 5, 7, 10 years. manufactures do not know at this time

What kind of monitor screen should I get?

RavenPerch

I dont get it, these new LED tv's. They are not really LED composed tv's are they? Just LCD tv's with led backlights? Isnt that what they are?

Answer
Liquid Crystal Displays (LCD) use a backlight to shine through crystals that allow or restrict the passage of light. Each pixel is composed of 3 crystals with filters for the three primary colors.
Organic Light Emitting Diode (OLED) displays directly produce each of the three primary colors. No need for backlight or filters.

A different thing is LED-backlit LCD, where LEDs are use as backlight instead of fluorescent light.

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What makes 3d led tv better than others like it?

led tv backlight image

What makes 3d led tv better than others like it?

Answer
There has been a lot of hype and confusion surrounding the introduction of "LED" Televisions. Even many marketing representatives and sales professionals that should know better are falsely explaining what an LED Television is to their prospective customers.

To set the record straight, it is important to note that the LED designation refers to the backlight system used in some newer LCD Televisions, not the chips that produce the image content.

LCD chips and pixels do not produce their own light. In order for an LCD television to produce a visible image the LCD's pixels have to be "backlit". For more specifics on the backlighting process needed for LCD Televisions,

LED TVs are still LCD TVs. It is just that these new sets use LED backlights rather than the fluorescent-type backlights used in most other LCD TVs.

In other words, LED TVs should actually be labeled LCD/LED TVs.

How LED Technology is Used In LCD TVs

The are currently two main ways that LED backlighting is applied in LCD flat panel televisions.

One type of LED backlighting is referred to as Edge Lighting. In this method, a series LED backlights are placed along the outside edges of the screen. The light is then dispersed across the screen. The advantage of this method is that the LED/LCD TV can be made very thin. On the other hand, the disadvantage of Edge lighting is that black levels are not as deep and the edge area of the screen has a tendency to be brighter than the center area of the screen.

The other type of LED backlighting is referred to as Full-Array. In this method, several rows of LEDs are placed behind the entire surface of the screen. The advantage is that these sets can employ "local dimming". Local dimming means that each LED or a specific group of LEDs can be turned on and off independently within certain areas of the screen, thus providing more control of the brightness and darkness for each those areas, depending on the source material being displayed. On the other hand, LCD TVs that employ full array backlighting are thicker than LCD TVs that employ an Edge-lit LED light source.

If you are considering the purchase of an LED/LCD Television, find out which brands and models are currently using the Edge or Full Array method and take of a look at each type when you go shopping to see which type of LED backlighting looks best to you.

Why does my led tv buzz when I dim the lights in my room?

Ryan

I've read other people have had the same problem with led tv's, but usually their problem is corrected when they turn the backlight on their tv all the way up. My tv still buzzes at any backlight setting. I live in a somewhat new house, I wouldn't think that's its a problem with the wiring. When my room lights are turned all the way up their is a faint buzz, but when I dim my lights in my room the buzz gets much louder and I can hear it over the tv at times during quiet scenes. Would a power conditioner help me? or should I consider a replacement tv? Thanks in advance for any help.

Answer
Wow....I use a dimmer and my LED is unaffected. I would change the coaxial cable between the wall and the Cable box (or TV receiver) and/or the coaxial cable (if you're using one) between cable box and TV. I'm suspecting a loose ground shield may cause this type of problem. The dimmer switch itself is probably radiating some noise that's being picked up by the TV. I'm thinking that replacing the TV may not eliminate the problem.

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