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Qualcomm’s mirasol display technology is based on a reflective technology called IMOD (Interferometric MODulation), with MEMS structures at its core. This MEMS–based innovation is both bistable, meaning it is both extremely low power, and highly reflective, meaning the display itself can be seen even in direct sunlight. |
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By studying and mimicking nature’s processes and structures – a field of study called biomimetics – Qualcomm engineers have developed the nature-inspired mirasol display. The Interferometric Modulator (IMOD) element is a simple MEMS (micro-electro-mechanical system) device that is composed of two conductive plates. One is a thin film stack on a glass substrate, the other is a reflective membrane suspended over the substrate. There is a gap between the two that is filled with air. The IMOD element has two stable states. When no voltage is applied, the plates are separated, and light hitting the substrate is reflected as shown above. When a small voltage is applied, the plates are pulled together by electrostatic attraction and the light is absorbed, turning the element black. This is the fundamental building block from which Qualcomm's mirasol displays are made.
(Source: Qualcomm) |
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