Luxury Phosphor Watch Uses E Ink Printed Display

A dual Analog-Digital wristwatch using US E Ink’s electronic paper display technology was recently launched by Art Technology, Hong Kong. The E Ink technology depicts digital time with the look of electronic paper and can be read accurately and instantly from any angle - vastly improving on dull liquid crystal displays (LCDs) that typify previous digital watches. The customizable dial allows the owner to select among styles, from the precise detail of full numerals and indices to the simplicity of no markings all.

The Phosphor™ branded luxury watches feature a bold geometry, generously oversized buttons and knobs, and a luxuriously thick strap. However what makes the E Ink watch truly unique is that the entire watch dial is an E Ink Vizplex™ electronic paper display.

Although revolutionary in concept, electronic ink is a straightforward fusion of chemistry, physics and electronics. It has millions of tiny microcapsules, about the diameter of a human hair. In one incarnation, each microcapsule contains positively charged white particles and negatively charged black particles suspended in a clear fluid. When a negative electric field is applied, the white particles move to the top of the microcapsule where they become visible to the user. This makes the surface appear white at that spot. At the same time, an opposite electric field pulls the black particles to the bottom of the microcapsules where they are hidden. By reversing this process, the black particles appear at the top of the capsule, which now makes the surface appear dark at that spot.

To form an E Ink electronic display, the ink is printed onto a sheet of plastic film that is laminated to a layer of circuitry. The circuitry forms a pattern of pixels that can then be controlled by a display driver. These microcapsules are suspended in a liquid “carrier medium” allowing them to be printed using existing screen printing processes onto virtually any surface, including glass, plastic, fabric and even paper. Ultimately electronic ink will permit most any surface to become a display, bringing information out of the confines of traditional devices and into the world around us.