Whatever happened to LED TVs that were supposed to have no backlight?

meirionwyllt
meirionwyllt used Ask the Experts™
on
When I first read about LED TVs years ago, my understanding of how they work is this...

Rather than having a backlight that lights up the pixels, each pixel is its own LED that shows whatever colour is needed, and if the pixel is meant to be black, then the pixel just turns off.  This meant two things:

1.  That there is an electricity saving to be had from the fact that there is no backlight and that not all pixels are on all the time.
2.  That due to there being no backlight to pollute light, the black parts of the screen are actually black, because the pixel LEDs are turned off - a darker black that what TVs have been able to manage before

When I read the above, it made perfect sense to me.  However, I've seen a few LED TVs since then, and they all have backlight, and the 'black' that they show is no more black than any other TV.

What's going on?
Thanks.
Comment
Watch Question

Do more with

Expert Office
EXPERT OFFICE® is a registered trademark of EXPERTS EXCHANGE®
Commented:
What's going on is price. It was always there and I've benefited from for several years now. On a lower scale though.
It's mostly Samsung pushing it (OLED, AMOLED and Super AMOLED) on their phones. When you look at such a screen, your jaw just drops to the floor (compared to other screens). It's just the beautiful blacks and vibrant colors. For a few years now, all the Samsing flagship phones and tablets have these screens.
However, translate it to a 32" inch, or even 55", and your nice OLED (maybe even curved) will be over 10.000 bucks. That's mainly the reason you don't see it. BUT THEY ARE DEFINITELY out there (obviously, in high end super deluxe types of stores).
Recently, seems the price have dropped to a reasonable level, see: http://www.amazon.com/LG-Electronics-55EG9100-55-Inch-Curved/dp/B0148OZNKK
meirionwylltSenior Desktop Engineer

Author

Commented:
Ah I see.  So what do I need to look out for if searching for one (if they come down in price).  How do I differentiate these from the more common LED screens, apart from Samsung's OLED, AMOLED and Super AMOLED?

Thanks.
Commented:
You have to check the specs that it clearly states it's an OLED panel.
Here's one that's still a tad too expensive for my taste: http://www.amazon.com/LG-Electronics-65EG9600-65-Inch-Curved/dp/B00RVAG7MW/ref=sr_1_1?s=electronics&ie=UTF8&qid=1448382884&sr=1-1&keywords=65EG9600
meirionwylltSenior Desktop Engineer

Author

Commented:
Great thanks for the info.  At least now I know that LED wasn't one big swindle.

Cheers.

Do more with

Expert Office
Submit tech questions to Ask the Experts™ at any time to receive solutions, advice, and new ideas from leading industry professionals.

Start 7-Day Free Trial