LG forum: Flicker Free Cinema 3D TV

So you're interested in buying a Cinema 3D tv, I see. I own a LG Cinema 3D TV myself and it is true that its picture quality is superior. The superior image quality, flicker free quality and crosstalk free quality are all related to the technology behind the screen.
Other 3D tvs, such as those from Samsung and Panasonic, fall into the active 3D tv category.
Active 3D tvs use shutter system technology. Each image frame has a black frame immediately behind it and the images are projected as the 3D glasses' shutter "turns on and off." Because the image frames move so slowly, you see the images flicker.
Another problem with active 3D tvs is crosstalk. Crosstalk is when you see a duplicate of a single image. They do exactly the same thing side by side. How the 3D glasses work is when one of your eyes see the image, the other eye is supposed to see the black frame. But sometimes both of your eyes see the same image, creating a dopleganger of the image.
All the active 3D tvs have this flickering and crosstalking problems.
As you mentioned, LG Cinema 3D tv is flicker free because it's a passive 3D tv.

I would recommend Cinema 3D TV too! I bought it a few weeks ago and so far, I am very pleased with my purchase jkowzer's answer is spot-on! I just want to add that Cinema 3D TV comes with four pairs of free 3D glasses and they are so easy to use! I love how simple they are and so light. When friends came over, I bought another three pairs quite cheaply.
I would also recommend this product since whatever image is on the Cinema 3D TV comes out much brighter! It's very good for the eyes.

Flickering means that you receive only one image at a time to each eye, while the other sees a black film. Active tech is what does this and thus creates the rapid procession of flickering images going from one eye to the other. Personally, I find the flickering annoying. I hate that it gives me a headache when I'm trying to enjoy some 3D.

But passive 3D TVs do not flicker at all. And LG Cinema 3D is even certified for this! So you have no worries at all. Also, I much prefer the lightweight passive 3D glasses to the heavy battery-charged active 3D glasses too.

Good luck with purchasing your set, make sure to check out your options well before deciding!

LG Cinema 3D IS a flicker free TV. I see that other guys
above me have already explained what that means so I'll answer the second part
of your question. The answer is yes, other 3D TVs have flickers. I've owned 3D
TVs from both Samsung and Panasonic before but my experiences with them wasn't
so great. Flickers can happen just by chance, if your glasses aren't receiving
the signals from the TV well or it can happen when the glasses are running low
on battery. Sometimes you forget to charge the battery and it's really annoying
when noticeable flickers occur. I changed over to LG Cinema 3D and never had
any flicker since then. As far as I know, LG Cinema 3D is the only 3D TV that
is certified flicker free. (Please correct me if I'm wrong :P)

The flicker occurs in the plasma-based "active" (or "active shutter") technology that is currently favored by the 'big' electronics manufacturing and they have a point: the black ratio alone is at least one to two magnitudes greater as well as having sharper colors. The passive mfgrs are offering a highly competitive product (from a purely graphical perspective) despite the fact that they continue to suffer from the mass of the requisite - and often proprietary - expensive glasses and their tendency to lose synchronization. That is the so-called "flicker" and that makes it seem like an occasional minor irritation but can tend towards the maddening. The depth of color of plasma is not worth the irritation of watching shows on those screens for very long unless one is committed to displays of both zen-like calm and being outrageously ostentatious.

This will be a replay of the betamax vs vhs battles of the late 70's and early 80's and, not unlike that battle, consumerism and frugality will overcome the graphical superiority because it's just not so great as to be worth the troubles of the more expensive and, unlike the beta, not exactly the most reliable.

So, the general consensus is that Passive is a better overall deal - the picture quality may not be as good but go for a refresh rate of at least 120hz, with 240hz being better and 600hz being best and the image quality can be minimal (and it will significantly reduce lag on the 2d-3d conversion!) And while I have not tested nearly enough to specify a best in class on my own I would have to agree with the previous posts, as well as the editors of CNET, that the LG and Vizio are among the best for the price with this year's edge going to the Vizio. It's the one that I'm getting ready to purchase!