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  1. OLED - Wikipedia

    Transparent 55" OLED screen An organic light-emitting diode (OLED), also known as organic electroluminescent (organic EL) diode, [1][2] is a type of light-emitting diode (LED) in which the …

  2. Learn About LED Lighting - ENERGY STAR

    LED stands for light emitting diode. LED lighting products produce light up to 90% more efficiently than incandescent light bulbs. How do they work? An electrical current passes through a …

  3. Light Emitting Diode (LED): Principle, Advantages, and Uses

    Jun 10, 2025 · A light-emitting diode (LED) is a small electronic device that emits light when an electric current flows through it. LED works by passing electricity through a semiconductor, …

  4. LED | Definition, Light, & Facts | Britannica

    Jan 2, 2026 · An LED (light-emitting diode) is a semiconductor device that emits infrared or visible light when charged with an electric current.

  5. Light Emitting Diode (LED): What is it & How Does it Work?

    Feb 24, 2012 · What is a Light Emitting Diode (LED)? A Light Emitting Diode (LED) is a special type of PN junction diode. The light emitting diode is specially doped and made of a special …

  6. Light Emitting Diode: How LEDs Work, How to Use LEDs

    Jun 12, 2025 · LED lights refer to energy-efficient lighting devices used in homes, vehicles, streetlights, signage, and electronic displays. They consume less power and last significantly …

  7. How Light Emitting Diodes Work | HowStuffWorks

    Light emitting diodes, commonly called LEDs, are real unsung heroes in the electronics world. They do many different jobs in all kinds of devices. They form numbers on digital clocks, …

  8. LED Lighting - Department of Energy

    The light-emitting diode (LED) is today's most energy-efficient and rapidly developing lighting technology. Quality LED light bulbs last longer, are more durable, and offer comparable or …

  9. What is a Light-Emitting Diode (LED)? - Build Electronic Circuits

    Feb 17, 2023 · A Light-Emitting Diode (LED) is a small component that lights up when there is current flowing through it. It’s used in light bulbs, displays, lighting decorations, and much more.

  10. What is an LED? | All About LEDs | Adafruit Learning System

    Feb 11, 2013 · In fact, the first two letters of LED stand for Light Emitting. A really nice thing about LEDs is that they are very simple. Unlike some chips that have dozens of pins with names and …