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In Reply to: RE: LED question? posted by Wendell Narrod on September 8, 2009 at 08:16:46

The LEDs provide the backlighting while the LCDs act to selectively block transmission of that backlighting.

However, with the more advanced sets, the LED lighting is of the "locally dimming" variety. With local dimming, there are multiple LEDs acting as the source of lighting. The LEDs are selectively turned on and off to match the differing brightness level of different parts of the screen at any given moment. If an area of the screen is supposed to be totally black, the LEDs in that area are not turned on at all.

I've seen both the top of the line Sony and Samsung sets with locally dimming LEDs and the black levels and overall image quality is quite impressive. Compared to the Pioneer Kuro Plasma sets, there are a few more motion artifacts, not quite as accurate colors, and a narrower viewing angle, but, the image quality is MUCH better than prior LCD sets. I would take either of these sets over any current plasma set except the latest Kuro model.

It is unfortunate that the whole Pioneer line of plasmas are a thing of the past and the promised development of even more efficient plasmas with deeper black levels is now doubtful.

Follow Ups:

RE: Yes - Wendell Narrod 10:08:48 09/8/09 (2)
I know. I suspect people are confusing backlighting technology with display technology. It's understandable. They market them as as LED televisions. They didn't market the original LCD flat panels as flourescent TVs.

OLED is a truly exciting display technology if Sony can get the prices down and market larger displays. It is a true breakthrough.
- RE: Yes - Larry I 10:21:36 09/8/09 (1)
  The trouble with Sony is that they have been batting near .000 in the last decade or so when it comes to bringing out a new technology/product, supporting the technology, and providing customer support. I have learned this the hard way.
  
  I would wait quite a while and NOT be an early adopter, particularly since there are still some issues regarding the life expectancy of the blue OLEDs.
  - Good advice. - Wendell Narrod 10:32:17 09/8/09 (0)
    My days of early adoption are over. My three HD sets are 1080i and I won't upgrade to 1080p until each needs to be replaced. I didn't buy a BluRay player until I could get a floor model for under $100 and I don't own a single disc. I rent them from Netflix.
    
    Sony has has a checkered past as you mention. They effectively killed SACD as a medium and I'm still not convinced BluRay will not be replaced my something else. They are technological geniuses and business morons.

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