STEM与日常科技·英语30篇（5）
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Pixel Shifting: How OLED Screens Avoid Burn-In
像素位移：OLED屏幕如何避免烧屏
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OLED displays create light directly in each red, green, or blue sub-pixel, unlike LCDs.
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But static images—like navigation bars or logos—cause some pixels to age faster than others.
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This uneven wear leads to permanent ghost images known as burn-in.
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To prevent it, modern OLED TVs and phones subtly shift the entire screen image by one or two pixels every few minutes.
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The movement is too small for users to notice, yet it spreads wear across neighboring pixels.
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Advanced algorithms track which areas stay fixed longest and prioritize shifting those zones.
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Some devices combine pixel shifting with automatic brightness reduction for static content.
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Together, these strategies extend display lifespan by up to 40% under heavy use.
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Manufacturers now guarantee zero visible burn-in for at least three years of normal viewing.
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It’s a clever software-hardware dance that protects your screen invisibly.