nogahorovitch using an oscilloscope and a photodiode, as discused here on another thread. I highly recommend a portable one for convenience and practical reasons. It can detect LCD inversion, too.
As a warning this method does not fully validate good screens but rather the bad ones or their settings, as it cannot detect dithering at all
Sunspark I see no difference, either, as no line can be totally flat with today's technology.
For me, that Toshiba seems like a good candidate
Alyosha2001 Yes the oscilloscope line can have micro jitters as perfect flicker free led lights does not exist, but the line should be flat across all the graph and not fluctuating like the sony one does, because that in milliseconds is perceived as flicker.
I think those can be errors of measurement. If we could see the whole graph and not just 20 msecs, than we could see if there is a periodicity or not. I think they are just random and too small in amplitude to matter. Compare it to a pwm and see how they differ.
It can be a less perfect current driver, a flawed model, etc.
More importantly to me is if they were to measure the dithering.
The line in the toshiba 55C350 graph doesn't seem flat to me.
Also, it is not good as a PC monitor. "can't display proper chroma 4:4:4. This is disappointing if you want to use it as a PC monitor and want clear text" https://www.rtings.com/tv/reviews/toshiba/c350-fire-tv-2021
Is there a better option?
I'm really desperate to find a 50"-55" TV that its line is completely flat line, totally flicker free, in all the settings and brightness levels.
Also, is there another site that makes measurements, like rtings and even more thoroughly than them?
If you can, give the 55c350 a try. It consumes a little too much current, but maybe just at full specs. However it is it is a pretty rare thing to not have pwm.
In my country it is unavailable, so I cannot help.
Flatliners do not exist, just good enough to do the job ones.
nogahorovitch You will not find on any device anywhere that uses a backlight a perfectly flat line. Anything that has current flowing through it is going to have minute variations.
You could try this 32" reflective LCD which has no backlight. Degen has it and likes it. https://www.sunvisiondisplay.com/reflective-lcd-monitor
With the reflective one, it's up to you what light you wish to shine on it.
Sunspark Thanks. But I must have ~ 50". SO this is to small.
Does anyone know if anyone tested BenQ's models: rm5502k / rm5501k / RP553K.
RTING did not test them.
Sunspark Do you know of ~50" that has the most possible flat line ?
nogahorovitch Maybe you should just try an OLED. The flicker is not the same as a LED's flicker, it might be fine.
Sunspark
I read many people say OLED causes eyestrain.
And also, it flicker every 8ms (in the refresh rate)
nogahorovitch Even incandescent light has a flicker. It all depends on how it is for you.
