LED LCD without local dimming

They use LED lights around the edge of some models(not locally dimmed) to provide the backlight which allows for a thinner, more aesthetically pleasing TV. I'm certainly not a pro on the subject but that's my take.

So companies like Samsung can market their edge lit led tv's and rip people off that do not know what you have discovered.

Now led tv's that are Back lit usually have local dmming and better blacks. But they are not slim like the edge lit models.

Most consumers assume that an led tv has to be ultra slim or it is not the best. So they pay out thousands for a tv that is way overpriced.

Edge lit LED LCD displays are better in contrast then the standard floursant light back lit LCDs. However local dimming LED LCD displays are even better but cost more.

Following is a Bing search on them:

http://www.bing.com/search?q=edge+li...&filt=all&qs=n

Fred you have 2 types of LED TV's. Edge-Lit & Back-Lit.

Edge-Lit means the LED's are around the border of the TV & they don't do Local-Dimming.

Back-Lit means the LED's are all over the TV & they do Locally Dim.

There are 5 companies right now offering LED TV's

SAMSUNG (Edge-Lit & Back-Lit/Local Dimming)
LG (Back-Lit/Local Dimming)
TOSHIBA (Back-Lit/Local Dimming)
VIZIO (Back-Lit/Local Dimming)
SHARP (Back-Lit No Local Dimming)

Here are 2 links that should be helpful

http://reviews.cnet.com/8301-18438_7...rColumnArea1.2

http://reviews.cnet.com/4321-6482_7-...rColumnArea1.2

Well you be the judge of the picture quality. I just think marketing an LCD tv with edge LEDs as the backlight calling it an LED tv is very misleading. I do like the picture quality of some of the edge lit led tv's, but no more than the high end ccfl lit sets. Now backlit led tv's are generally a better picture.

Regaurdless of your preference they are all LCD tv's.

Sony has the xbr8 and xbr10 led LCD tv's.

Rip them off? People should learn about the technology before they buy.

I agree. And give the OP credit for doing a little homework before the purchase. If more consumers asked questions the product would be better and more competively priced.

not really....

there are TV's with full array led backlight system that do not have local dimming, but utilise excellent LCD panel technology to achieve exemplary sharpness. These panels will be used in upcoming Pioneer TVC's...

The main reason LED's are used is to overcome blue push... inherent problem with CCFL backlight systems.

Boky

You are correct. My bad

This is interesting. Do you have any further references to these new sets?

I've been hearing rumours from many sources....even retail shops...

http://www.smarthouse.com.au/TVs_And...ustry/N2T2C4G2

Boky

I don't think that your almost one year and an half old link is at all revelent since AFAIK Pioneer is no longer manufacturing the TVs that they are selling under their brand name.

That article is dated. HARD

rumours from 2 most reputable retail chains in Australia is that Pioneer has teemed with Sharp to utilise Sharp LCD panel technology... my nephew works in one, and very good friend in second shop this is a result of a joint venture that started in 2007...they are hoping to capitalise on Kuro advanced processing technology and Sharp advanced LCD panel manufacturing.

1 min web search.

http://www.hometheatershack.com/foru...upply-lcd.html


Boky

I agree. Actually, I think marketing any LCD TV as an LED TV is misleading, when the main display device is an LCD. When they get a 1920x1080 array of LEDs creating the image, then I'll go for it.

Michael

I took a look at a Samsung LED LCD at sears the other day, no way it was a local dimming machine but it looked incredible.

Would it be a safe statement to say the non locally dimming (edge lit) LED LCD's produce a better picture than a standard LCD TV? If the answer to that is no, why would someone buy an edge lit over a standard LCD which is significantly cheaper. Other than the thin factor.

Let’s put local dimming aside for the moment. The only advantage to local dimming is to increase contrast ratio of the display device. LED backlights can be turned on and off more quickly than fluorescent lamps. This means that the backlight source can be turned off during the LED lag time when they transition from the twisted state to the “un-twisted’ state (known as the response time). This helps to reduce the “smear” effect. 120HZ and 240HZ refresh rates of the TCON circuits also helps reduce the smear rate and a backlight source that strobes in unison with the refresh rate helps to minimize this effect. The net result is smoother video flow and increased contrast ratio.


Whether the panel is edge-lit or backlit by the LED’s is minimal in this argument. They both perform the same functions as described above. Either backlight method is spread out by diffuser methods so as to provide even backlighting as best as possible.

Display veteran,
Bassed on your extensive testing do you agree with the following editor's post that there are LED units with local dimming that is different by zones and local dimming that is the same for all zones?

http://reviews.cnet.com/4321-6482_7-6661380.html

Current local-dimming sets lead edge-lit sets by a fairly wide margin in black level, peak brightness, and uniformity. Uniformity is especially bad. And while edge-lit sets lead CCFL in color temp, color gamut doesn't look nearly as good. You solve one or two problems, while creating a whole host of other problems.

IMO, It's easy to get transfixed by a ultra-thin television with eye-popping vibrant colors. While I still rather take a well-made CCFL over a poorly implemented LED set.