Glossary
OLED
Organic Light Emitting Diode — a display technology where each pixel emits its own light, enabling true blacks, per-pixel contrast, and very fast response times.
OLED displays use organic compounds that emit light when current passes through them. Unlike LCDs (which need a backlight), each OLED pixel is individually controlled.
Why it matters
- Perfect blacks. A turned-off OLED pixel is truly black, giving theoretically infinite contrast.
- Fast response. Sub-millisecond pixel transitions — meaningful for high-refresh-rate gaming.
- Thinner panels. No backlight layer.
Variants
- WOLED (LG Display) — white sub-pixel with color filters.
- QD-OLED (Samsung) — quantum-dot color conversion on a blue OLED stack; higher peak brightness in HDR.
- LTPO-OLED — low-temperature polycrystalline oxide backplane allowing dynamic refresh rates from 1 Hz to 120+ Hz.
Downsides
Burn-in remains a concern under static content (HUDs, taskbars). Modern panels mitigate with pixel shift, logo dimming, and refresh routines but cannot eliminate it. Peak full-screen brightness still trails Mini-LED.
Where this matters
Categories that use oled
See it compared
OLED on real comparisons
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