Has anyone ever seen color after-images on a LCD with cfl backlight? It looks like what you would see from a DLP projector, only not quite as obvious.
A simple test it to view an entirely black screen with a small (5-10 pixel wide) vertical white line near the center. I can see what appear to be blue, yellow, and magenta after-images when looking from one side of the line to the other. In the worst case at minimum brightness there appear to be 2 cycles of these colors. The image itself is static, so I assume the effect must somehow be due to the backlight. I don't know how this could be happening, since I thought there can't be cycling colors with cfl backlights.
I have seen this effect on some TN monitors when used at less than full brightness, but have never seen it on my older dell 2007wfp (PVA version).
I just purchased a zr30w and am sending it back because this is extremely annoying to me (and it buzzes). At full brightness the image appears to not have this effect, but when using at the minimum brightness (the only usable setting) there are multicolored trailing images visible in high contrast areas when visually scanning across the display.
Most people I have asked can just barely see what I am talking about, so apparently I'm more sensitive to this than average, but someone else must have encountered this at some point.
Is there a name for this effect? I can only assume it is caused by the backlight since it disappears at full brightness. I need to find a monitor that doesn't have this problem.
Monitors that don't have the problem:
Dell 2007wfp (PVA version)
Monitors that do have the problem:
Samsung 245BW
HP zr30w
A simple test it to view an entirely black screen with a small (5-10 pixel wide) vertical white line near the center. I can see what appear to be blue, yellow, and magenta after-images when looking from one side of the line to the other. In the worst case at minimum brightness there appear to be 2 cycles of these colors. The image itself is static, so I assume the effect must somehow be due to the backlight. I don't know how this could be happening, since I thought there can't be cycling colors with cfl backlights.
I have seen this effect on some TN monitors when used at less than full brightness, but have never seen it on my older dell 2007wfp (PVA version).
I just purchased a zr30w and am sending it back because this is extremely annoying to me (and it buzzes). At full brightness the image appears to not have this effect, but when using at the minimum brightness (the only usable setting) there are multicolored trailing images visible in high contrast areas when visually scanning across the display.
Most people I have asked can just barely see what I am talking about, so apparently I'm more sensitive to this than average, but someone else must have encountered this at some point.
Is there a name for this effect? I can only assume it is caused by the backlight since it disappears at full brightness. I need to find a monitor that doesn't have this problem.
Monitors that don't have the problem:
Dell 2007wfp (PVA version)
Monitors that do have the problem:
Samsung 245BW
HP zr30w