What is eInk ?
eInk, or electronic ink, is a revolutionary display technology that replicates the appearance of traditional ink on paper. Developed initially for use in e-readers, eInk has found a significant role in digital signage due to its unique properties. Unlike conventional displays, eInk screens reflect light like ordinary paper, ensuring excellent readability in various lighting conditions, including direct sunlight. This characteristic, coupled with low power consumption, makes eInk a preferred choice for applications requiring long battery life and easy readability.
The Technology Behind eInk: Microcapsules and Particle Movement
At the core of eInk technology are microcapsules filled with charged pigment particles suspended in a liquid. These microcapsules are embedded in a thin film layered onto a surface. When an electric field is applied, the charged particles move to the top or bottom of the capsule, displaying either black or white to form images and text. This bi-stable nature means eInk displays can retain an image without power, significantly reducing energy consumption. This makes eInk particularly suitable for digital signage applications where static images are displayed for extended periods.