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WHAT IS LED, OLED, AND QLED?

 ðŸ’¡ 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:

  • It’s actually a type of LCD (Liquid Crystal Display).

  • Uses LEDs as a backlight behind an LCD screen.

  • The crystals block or allow light to pass through to form images.

📌 Key Traits:

  • Bright and energy efficient

  • Affordable and common

  • Not true blacks (backlight always leaks a bit)

  • Colors depend on filters, not true emitters

🌈 2. OLED (Organic Light Emitting Diode)

How it works:

  • Each pixel produces its own light — no backlight needed.

  • Made from organic materials that glow when electricity passes through.

📌 Key Traits:

  • Perfect blacks (pixels turn off completely)

  • Super thin and flexible screens possible

  • Vibrant colors, high contrast

  • Expensive and can burn-in (image retention)

🌟 3. QLED (Quantum-dot LED) — (used by Samsung and others)

How it works:

  • It's still a LED-backlit LCD, but with an added quantum dot layer.

  • Quantum dots are tiny particles that glow precisely when hit by light.

📌 Key Traits:

  • Brighter and more color-accurate than normal LED

  • Still uses a backlight (unlike OLED)

  • Great for bright rooms

  • Longer lifespan than OLED