OLED

An organic light-emitting diode is a semiconductor device that emits light when electric current passes through organic layers. Its thin, emissive structure enables self-lit displays and lighting panels.

OLED stack: The sequence of conductive, transport, emissive, and electrode layers that forms an OLED device. Its layers inject and transport charge toward the region where light is generated.
Indium tin oxide: A transparent, electrically conductive oxide widely used as a coating on glass and plastic. It commonly serves as the transparent anode through which OLED light exits.
Active-matrix OLED: An OLED display whose pixels are controlled by an array of thin-film transistors. This architecture drives the independently controlled pixels used in most OLED screens.
LCD: A display technology that modulates a backlight using liquid crystals and optical filters. Unlike OLED, an LCD needs a separate backlight and cannot turn off individual pixels by extinguishing their light source.
OLED burn-in: Persistent uneven aging in an OLED display that leaves a visible remnant of repeatedly shown image elements. Unequal pixel wear can make static interface elements remain faintly visible.
Electroluminescence: Light emission caused by an electric field or electric current acting on a material. OLEDs produce light through this broader physical process.
Hole transport layer: A layer designed to move positively charged holes through an electronic device. It carries holes from the anode toward the OLED emissive region.
Passive-matrix OLED: An OLED display that selects pixels by scanning rows and columns without a transistor at every pixel. It is a simpler OLED display architecture suited mainly to small, low-resolution screens.
Quantum-dot display: A display technology using semiconductor nanocrystals to convert or emit color-specific light. Quantum-dot displays can improve color output while relying on different emissive or backlit architectures.
Blue OLED: An OLED emitter or subpixel designed to produce blue light. Blue emitters have posed particular efficiency and lifetime challenges for OLED displays.

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