AMOLED (active-matrix organic light-emitting diode) is a display technology for use in mobile devices and televisions. OLED describes a specific type of thin-film display technology in which organic compounds form the electroluminescent material, and active matrix refers to the technology behind the addressing of pixels.
As of 2011, AMOLED technology is used in mobile phones, media players and digital cameras, and continues to make progress toward low-power, low-cost and large-size (for example, 40-inch) applications.
AMOLED works by having a thin film transistor (TFT) layer consisting of an array of OLED pixels that form a matrix. Upon activation with electrical energy, the OLED pixels will illuminate light to render whites and colors; blacks will be shown to the eye due to unactivated OLED pixels. According to Wikipedia, “The TFT array continuously controls the current that flows to the pixels, signaling to each pixel how brightly to shine.”
AMOLED screens have surfaced over the past few years, offering thin, flexible alternatives to the classic LCD screens found in many electronics today. This new screen from Samsung goes a step further than just being flexible. Samsung is actually touting the new display as “unbreakable”. How do you prove that? Hit it with a hammer, of course.
Future development
Manufacturers have developed in-cell touch panels, integrating the production of capacitive sensor arrays in the AMOLED module fabrication process. In-cell sensor AMOLED fabricators include AU Optronics and Samsung. Samsung has marketed their version of this technology as Super AMOLED. Clear Black Display or CBD is an AMOLED display with a polarized filter on top. Researchers at DuPont used computational fluid dynamics (CFD) software to optimize coating processes for a new solution-coated AMOLED display technology that is cost and performance competitive with existing commercial vapor deposition technology. Using custom modeling and analytical approaches, they developed short- and long-range film-thickness control and uniformity that is commercially viable at large glass sizes.
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