I don't know if it has been discussed on this board earlier, but I seem to be able to see this rainbow-like effect on LCD TVs too.
I recently bought a Sony KDL-40W4000 and I can easily see some greenish flashes in high contrast scenes (still images too) when I move my eyes from side to side.
This effect seems to be most noticeable when the backlight of the TV is set to minimum. If I increase the backlight to almost maximum I cannot see it anymore.
There are some other people in AVForums who see the effect also and currently there is at least one explanation to this:
Originally Posted by steverobertsbbc
The rainbowing is the backlight dimmer - it uses pulse width modulation to control the amount of light and the flicker beats with the panel refresh rate. The lower the light, the less time the tube is illuminated for and the more obvious the rainbowing. At max backlight, it's on constantly and there is consequently no rainbow effect.
If you have a PS3, put it in the mode where it asks you if you want to turn off the system, which gives you bright white graphics on a black screen. Put the backlight on minimum and just flick your eyes around the screen, you'll see predominantly green flashes. Turn the backlight up and the effect reduces until it disappears at max setting.
I see rainbows on plasmas (yellow), RP-CRTS (red), and DLP (all colors). I've never seen them on a LCD but that doesnt mean they aren't there. I'm currently running a samsung 550 and have had the blacklight from 3-6 and haven't noticed anything, so I'll count my blessings.
yeh I see this effect more noticeably on plasmas. on LCD it isn't as noticeable, but it is still there if I move my head side to side quickly. for most people, they don't see them at all. but a few of us who have sensitive eyes will be able to pick out the green trails.
We have a Philips 9703 model and we are the same "green flash" effect, ecpecially on dark scnes with high contrast points. Colors are green and sometimes red.
We haven't had the same problem with other philips models we have owned. That is why we thought it was eather the _white color gamma gamut_ feature that enhances the colors.
We have no option to control the backlight but putting contrast very high seems to reduse the effect. Bad thing is that the screen is bright enough so it doesn't feel right to do so and i wonder if it also shortens the life of the tv panel.
If I and my huspand have both the "rainbow seeing" gene and we have children someday, they can only look 3D movies !