Compensation Algorithm for Misrecognition Caused by Hard Pressure Touch in Plastic Cover Capacitive Touch Screen Panels

Abstract

When a plastic cover is used on a touch screen panel, IoT (internet of things) equipment, a medium-large size touch screen and a curved surface touch screen can have availability of production. Accordingly, it allows a 75% cost reduction compared to adopting a glass cover. Cost reduction also enables many users to experience products including touch screen panels with lower prices. However, when applying pressure on a hard plastic cover, it takes more time to restore to the original state from the bent state compared to a glass cover touch screen. This aspect gets heavier depending on the intention of the pressure. In this paper, a correction algorithm that compensates for this defect is suggested. The retouching time can be reduced to one-sixth compared to not applying the proposed algorithm.