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In Reply to: RE: I hate lcd TV's posted by cawson@onetel.com on September 8, 2009 at 02:48:05
Aren't current LED models only using LEDs for backlighting the screen? The only LED display I know of is the OLED by Sony which is small and expensive.
Clarification?
Follow Ups:
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.
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.
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.
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.
I've not yet investigated flat-screen TVs, but will have to soon as I'm moving to a new home where my huge CRT TVs will look totally out of place.I made a preliminary investigation recently and was told that LED was the latest technology and better than LCD and plasma for most purposes. In particular, LED TVs are very slim.
John Lewis, one of the largest and most respected chains of department stores in UK lists 7 LED TVs from 32-55" plus 39 LCD ones and 17 Plasma.
I don't know who else does them, but Samsung and Sharp certainly do.
Peter
They are ALL LED back light, it is still LCD panel, if it is real LED panel then why would you need LEDs for back lighting?
Every Samsung I've read about uses LED backlighting but not for the display.
Can you point me to a model that utilizes and LED display.EDIT:
I did another search and can still find no set, other than Sony's OLED that utilizes LED display technology. The Samsungs use LED for backlighting. They still use LCD display technology.
Try the John Lewis site below. They categorise screen types but not all LED screens are LED Backlighting, so presumably some are "proper" LED.
Maybe you can work out what is what!
Peter
", Samsung pointed out that LED backlighting provides improved energy efficiency, higher contrast ratios and slimmer designs. Samsung also noted that it has a line of LED-backlit LCD TVs that are less than an inch thick. Samsung stressed that the slim down of its LCD TVs has been enabled by LED backlighting technology."
I found nothing that mentioned LED display.
You say "I found nothing that mentioned LED display."
Is this relevent? The early postings were comparing LCD with Plasma. If Samsung and others can substantially improve on these technologies and call their TVs "LED" because they include LEDs, what's to complain at? Even if they have LCDs as well as LEDs, the point is that brighter, clearer images can be delivered on a thinner screen. Surely that's good?
Peter
It provides a better viewing experience and is good for the environment. I've been very impressed with the ones I've seen. If I were in the market and could not afford a plasma large enough it would be my choice. My primary set is 65" and, we all know, we don't go smaller when we upgrade.:-)
It's simply not a revolutionary technology change that organic light emitting diode technology can potentially offer.
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