TECHNOLOGY DESCRIPTION
Introduction
Learn more about E Ink and how our technology works.
Touch Technologies
E Ink based displays support a variety of solutions for touch. These solutions include several sensor types: resistive, inductive, capacitive or infrared. Resistive touch responds to pressure applied to the screen and is implemented using patterned electrodes on the display. Inductive touch requires the use of stylus and is implemented with a patterned electrode array behind the display. In capacitive touch, contact creates an increase in capacitance, which is detected by a controller IC. Infrared touch responds to an object, such as a finger, to break the infrared beams over the display to detect interaction with the display.
On-Cell Touch ePaper Module
E Ink now offers On-Cell Touch with ePaper modules to provide improved optical performance. This Touch solution provides an increase in the contrast ratio of black and white content of 30%, providing readers with clearer text content. When used in E Ink Kaleido™ Plus, the color contrast ratio is increased by 40% and the color saturation is increased by 15%, providing an enhanced display for color eBook and eTextbook content.