An OLED, or organic light-emitting diode, is a type of light-emitting diode whose electroluminescent layer is a thin film of organic compound, so that each pixel generates its own light and a display built from them needs no separate backlight the way a liquid crystal display does. Andre Bernanose and colleagues first observed electroluminescence in organic materials in the early 1950s, and Roger Partridge built the first polymer light-emitting diode at Britain's National Physical Laboratory in 1974, but the chemists Ching Wan Tang and Steven Van Slyke at Eastman Kodak built the first practical OLED device in 1987, introducing a two-layer structure with separate hole-transporting and electron-transporting layers that lowered the operating voltage and improved efficiency over earlier attempts. Pioneer Corporation began commercial OLED manufacturing in 1997, Kodak built the first full-color OLED display into a digital camera in 2003, and Sony released the XEL-1, the first OLED television, in 2007.
Facts
SignificanceThe OLED removes the backlight that liquid crystal displays need, since each pixel produces its own light, allowing thinner, brighter, more energy efficient and even flexible or foldable screens, and it became the basis of premium smartphone, television and wearable displays. 1 FAQs
How do OLED screens compare with LCD screens?
OLED screens are thinner and lighter than LCDs and respond faster.
An OLED screen is thinner and lighter than a liquid crystal display. It also provides superior brightness and color and offers an ultra-fast response time for functions such as refreshing and on-off switching. The reason is that an OLED screen uses luminescent organic materials to make its own light, where an LCD relies on a backlight that passes through color filters.
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Source OLED (Wikipedia)
Invented By
Source OLED (Wikipedia)
Source OLED (Wikipedia)
Sources
1. OLED (Wikipedia)
Wikimedia FoundationHistory, Practical OLEDs section
Chemists Ching Wan Tang and Steven Van Slyke at Eastman Kodak built the first practical OLED device in 1987.
In Field: Electrical Engineering, Categories
Optical diodes
Invented By: Ching W. Tang, Introduction
The invention of OLED can be attributed to two chemists at Eastman Kodak in 1987, namely Ching Wan Tang and Steven Van Slyke.
Invented By: Steven Van Slyke, Introduction
The invention of OLED can be attributed to two chemists at Eastman Kodak in 1987, namely Ching Wan Tang and Steven Van Slyke.
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