Definition of interferometric modulator display

Photonics Dictionary

interferometric modulator display: Interferometric modulator display (IMOD) is a type of display technology used in electronic devices, known for its energy efficiency and ability to produce high-quality reflective color displays. IMOD is a proprietary technology developed by a company called Pixtronix, which is now a subsidiary of Qualcomm.

The key component of an interferometric modulator display is the interferometric modulator itself. Each pixel in the display consists of a microscopic interferometric modulator, which is essentially a tiny mirror that can be tilted to produce different colors by manipulating the interference of light waves.

Here is a basic explanation of how IMOD works:

Mirror structure: The interferometric modulator comprises a thin-film stack with a reflective surface. This structure can be moved or tilted using electrostatic forces.

Color production: The color of each pixel is determined by the interference of light waves. By adjusting the tilt of the mirror, different colors can be produced. This is in contrast to traditional displays that use filters or subpixels to create colors.

Reflective display: IMOD is a reflective display technology, meaning it uses ambient light for visibility rather than relying on a backlight. This contributes to its energy efficiency, making it well-suited for applications where power consumption is a critical factor, such as in mobile devices and e-book readers.

The benefits of IMOD technology include lower power consumption, improved outdoor visibility due to its reflective nature, and potentially better color quality compared to certain traditional display technologies. While IMOD displays haven't been as widely adopted as some other display types, they offer an alternative approach to address specific needs in the display market.

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