Qualcomm smartwatch has MEMS-based interferometrically modulated reflective color display

qualcomm_toq

(Image: Qualcomm)

San Diego, CA--Qualcomm, which has been developing an interferometric microelectromechanical systems (MEMS)-based reflective color display called Mirasol (originally created by Iridigm Display Corporation, which Qualcomm acquired in 2004), has now introduced a "smartwatch" containing the display; the touchscreen watch pairs via Bluetooth to Android phones (but not iPhones, unfortunately).

The 1.55 in. Mirasol display itself has a 288 x 192 pixel resolution, is visible in bright sunlight, and has a front/edge-illuminated screen for use in dim light (a similar approach to that of Amazon's E-ink-based Kindle). Although the resolution is low (and the display technology has been around for quite awhile), the device is an attempt to desmonstrate the display technology to a wider audience, with improvements in resolution likely coming in future devices.

How it works
Each pixel of the display consists of a thin, reflective membrane that rests a very small distance away from the glass -- small enough for white-light interference effects to occur similar to those seen on oil films on water (the gap could be a single wavelength or small multiple of wavelengths). Because the film is conductive, the gap forming the resulting resonant cavity can be changed by applying a voltage, drawing the membrane toward the glass and shifting the resonance to the UV, therefore producing black. Lowering the voltage results in an interference-produced color.

With ideal coatings on the film and glass, the reflection at a single color can be very high. Practically, this means bright colors when seen in sunlight or room light, as well as low power consumption.

Qualcomm says the watch can operate for multiple days between charges.

For more info, see: http://www.qualcomm.com/mirasol




Most Popular Articles

Webcasts

Opportunities in the Mid-IR

The technology for exploiting the mid-IR is developing rapidly:  it includes quantum-cascade lasers and other sources, spectroscopic instruments of many...
White Papers

Introduction to scientific InGaAs FPA cameras

Working in the near infrared (NIR) and shortwave infrared (SWIR) regions of the spectrum offers r...
Technical Digests

OPTICAL COATINGS: Evolving technology produces new benefits

The antireflection, high-reflection, and/or spectral characteristics provided by optical coatings...

REMOTE FIBER-OPTIC SENSING: Data in abundance from difficult environments

The use of optical fibers to measure strain, temperature, and other parameters at desired points ...

SCANNERS FOR MATERIALS PROCESSING: Serving demanding applications

Galvanometer-based scanners are an essential component in laser-based materials-processing system...

Click here to have your products listed in the Laser Focus World Buyers Guide.

PRESS RELEASES

AFL Secures Patent for OTDR Technology

10/03/2013 AFL has been awarded a patent for “Optical Time Domain Reflectometer,” US Patent 8,411,259. The p...
Social Activity
  •  
  •  
  •  
  •  
  •  
Copyright © 2007-2014. PennWell Corporation, Tulsa, OK. All Rights Reserved.PRIVACY POLICY | TERMS AND CONDITIONS