E ink Display Technology

E ink Demo

E Ink has several novel types of electrophoretic ink, often called electronic ink.    When laminated to a plastic film, and then adhered to electronics, it creates an Electronic Paper. Display (EPD). although futuristic-sounding, electronic ink is actually a straightforward fusion of chemistry, physics and electronics. It’s so much like paper, it utilizes the same pigments used in the printing industry today.

 

Two Color Ink System

Two Pigment E ink Systems
Black and White Pigments

The two pigment electronic ink system is made up of millions of tiny micro-capsules, each about the diameter of a human hair.     Each micro-capsule contains negatively charged white particles and positively charged black particles suspended in a clear fluid.     When a positive or negative electric field is applied, corresponding particles move to the top of the micro-capsule where they become visible to the viewer.      This makes the surface appear white or black at that spot.

 

Three Color Ink System

Black, Red and White Pigments

E Ink also offers a 3-pigment ink system in a micro-cup structure. This ink was engineered specifically for Electronic Shelf Labels (ESL).     It works similarly to the dual pigment system, in that a charge is applied to the pigments, and to a top and bottom electrode to facilitate movement.    However, instead of the use of micro-capsules, this system utilizes Micro-cups®, which are filled with the liquid and sealed.

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