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March 13, 2010

Mtg: From Butterfly Wings to Energy-Efficient Displays

by @ 7:49 pm. Filed under ALL, Computers/Software, Electronics Design, NanoEngineering, Optics/Displays, Semiconductors

TUESDAY March 16, 2010
SCV Nanotechnology Chapter
Speaker: Rashmi Rao, Senior R&D Engineer, Qualcomm MEMS Technologies
Time: Registration and light lunch at 11:30 AM; Presentation at Noon
Cost: IEEE Members and Students $5; Non-Members $10
Place: National Semiconductor Bldg E-1 CMA Room. 2900 Semiconductor Drive, Santa Clara
RSVP: from the website

A butterflyâ??s shimmering wings.? A peacockâ??s iridescent plumage.? These are some of mother natureâ??s most beautiful nanoscale based color displays.? Mimicking mother nature Qualcommâ??s mirasolâ?¢ displays are a technology breakthrough that deliver substantial performance benefits over competing display technologies.
The mirasol display uses an interferometric modulation technology.? In this system a mirrored surface is overlaid with nanoscale flexible membranes that react to electrical charges.? Ambient light is reflected off the mirror and back through the membranes, which refract the light.? Specific wavelengths interfere with each other, creating colors.? The membranes are bistable, which means they have two stable states.? Once they display a color virtually no energy is required to maintain it, and energy is only required to change the color.
The low energy requirement means the battery will last much longer than a similar sized LCD (liquid crystal display) device.? The mirasol system also means there is no need for color filters, polarizing lenses or strong backlighting.? The display is visible in direct sunlight, and since it relies on reflected light, the brighter the ambient light, the greater the resolution of the image.? This technology addresses the top two trends driving innovation in the mobile sector: mobility and energy efficiency.

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