💡 WHAT IS LED, OLED, AND QLED?
These are different display technologies used in TVs, monitors, and screens. All produce beautiful images — but they work very differently behind the scenes.
🖥️ 1. LED (Light Emitting Diode)
How it works:
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It’s actually a type of LCD (Liquid Crystal Display).
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Uses LEDs as a backlight behind an LCD screen.
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The crystals block or allow light to pass through to form images.
📌 Key Traits:
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Bright and energy efficient
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Affordable and common
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Not true blacks (backlight always leaks a bit)
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Colors depend on filters, not true emitters
🌈 2. OLED (Organic Light Emitting Diode)
How it works:
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Each pixel produces its own light — no backlight needed.
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Made from organic materials that glow when electricity passes through.
📌 Key Traits:
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Perfect blacks (pixels turn off completely)
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Super thin and flexible screens possible
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Vibrant colors, high contrast
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Expensive and can burn-in (image retention)
🌟 3. QLED (Quantum-dot LED) — (used by Samsung and others)
How it works:
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It's still a LED-backlit LCD, but with an added quantum dot layer.
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Quantum dots are tiny particles that glow precisely when hit by light.
📌 Key Traits:
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Brighter and more color-accurate than normal LED
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Still uses a backlight (unlike OLED)
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Great for bright rooms
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Longer lifespan than OLED