By A Mystery Man Writer
This article discusses image persistence or burn-in on LCD monitors and ways to prevent or correct the issue.
LCD Image Persistence
Do LCD TVs Burn In?
LCD image persistence (ghosting) - ThinkPad X220, X220i, X220 Tablet, X220i Tablet - Lenovo Support EC
Image persistence - Wikipedia
LCD Image Persistence
LCD ghosting on the TN matrix displays explained - Riverdi
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LCD dark blotches. Mura? Clouding? Persistence? What to do?
Matrix Digital Rain On The IBM PC With A High Persistence Monitor