Patent ID: 11907472
Assignee: SHANGHAI TIANMA MICRO-ELECTRONICS CO., LTD.
Field: Audio-visual technology (Electrical engineering)
Classification: CPC G  H | IPC G  H

Claim 0:
1. A detection device comprising:
a plurality of first electrodes extending in a first direction;
a plurality of second electrodes extending in a second direction that crosses the first direction; and
a controller configured to (i) select, as first detection electrodes, two of the plurality of first electrodes and two of the plurality of second electrodes positioned outermost in a predetermined detection region, (ii) select, as first driving electrodes, at least one of the plurality of first electrodes and the plurality of second electrodes not selected as the first detection electrodes, and (iii) detect a target in a non-contacting state from signals expressing capacitances acquired, by applying a voltage to the first driving electrodes, from the first detection electrodes,
wherein the controller is configured to perform an operation for detecting a movement of the target in the non-contacting state, the operation including:
(i) selecting, as the first detection electrodes, two of the plurality of first electrodes positioned outermost in the predetermined detection region, (ii) selecting the first driving electrodes from among the plurality of second electrodes that intersect the first electrodes selected as the first detection electrodes in the predetermined detection region, and (iii) acquiring the signals from the two first detection electrodes that are the selected two first electrodes by applying a voltage to the first driving electrodes that are the selected second electrodes, and
(i) selecting, as the first detection electrodes, two of the plurality of second electrodes positioned outermost in the predetermined detection region, (ii) selecting the first driving electrodes from among the plurality of first electrodes that intersect the second electrodes selected as the first detection electrodes in the predetermined detection region, and (iii) acquiring the signals from the two first detection electrodes that are the selected two second electrodes by applying a voltage to the first driving electrodes that are the selected first electrodes.