Patent ID: 9046969
Filing Date: 2015-06-02
Classification: G06F

Abstract:
1. An input device comprising: an electrode part formed of electrode pieces; a switching circuit formed of a plurality of switches connected to the electrode pieces respectively; a driving circuit and a detecting circuit both of which are connected to the electrode part via the switching circuit; and a controller connected to the driving circuit, the switching circuit, and the detecting circuit; wherein the controller controls the switching circuit such that among the plurality of electrode pieces, the number of electrode pieces connected to the driving circuit decreases following a decrease in distance between an object to be detected and the electrode part; wherein the controller controls the respective switches such that the electrode pieces are individually opened or connected to one of the driving circuit and the detecting circuit; wherein the controller allows generating an electric field over at least a first one of the electrode pieces, the at least first one of the electrode pieces being connected to the driving circuit; and wherein the electric field is applied to the detecting circuit through at least a second one of the electrode pieces via a space over the electrode part, the at least second one of the electrode pieces being connected to the detecting circuit.