Information input device including a detection electrode with an aperture

摘要

An information input device includes a touch panel which is provided with a touch sensor capable of sensing a position in which a sensing target body is close to a sensing surface thereof. The touch sensor includes a scanning electrode and a detection electrode which faces and is spaced from the scanning electrode with a dielectric body being interposed therebetween, the touch sensor being configured so that electrostatic capacitance which is formed between the scanning electrode and the detection electrode is varied when the sensing target body is close to the detection electrode. The detection electrode is formed with a slit in a surface thereof which faces the scanning electrode, and a floating electrode is installed in the slit.

主权项

1. An information input device comprising a touch panel which is provided with a touch sensor capable of sensing a position in which a sensing target body is close to a sensing surface thereof, wherein:
the touch sensor includes (a) scanning electrodes each of which extends in a first direction, (b) detection electrodes each of which extends in a second direction perpendicular to the first direction, the detection electrodes facing and spaced from the scanning electrodes, the detection electrodes arranged in one plane, the scanning electrodes arranged in another plane and (c) a dielectric body interposed between the scanning and detection electrodes; each detection electrode is formed with a plurality of apertures contained therewithin, each aperture overlapping a scanning electrode; a plurality of floating electrodes are within a same plane as the detection electrodes and each is contained within a respective aperture; each scan electrode extends longitudinally farther in the first direction than laterally in the second direction; each detection electrode extends longitudinally farther in the second direction than laterally in the first direction; and electrostatic capacitance between each detection electrode and one of the floating electrodes within one of the apertures of the detection electrode varies when the sensing target body is close to the detection electrode.