I just bought my first LCD computer monitor. It has a TN panel. It had one stuck red subpixel that I couldn't massage, tap or software exercise away. So I exchanged it at Best Buy. The new monitor also has one very subtle defect. The color is not red, blue, green or white. It may be black, but it actually looks more like a gray. It is very small and very subtle. I can get at certain angles with a magnifying glass and not see it at all. For example, I can make it disappear at certain angles with a totally red or green screen and every pixel will look perfect. Then at a slightly different angle I'll see it. I don't think it's a dead subpixel, but I'm not sure what it is. Can there be glass impurities like dust captured inside an LCD screen?
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