Pixart Imaging Incorporated

Hui-Chen Hsu

Yu-Han Chen

Che-Chia Hsu

A touch pad and a sensing module thereof are provided. The sensing module defines an annular signal channel along a thickness direction. The sensing module includes a grounding layer and an electrode layer located at one side of the grounding layer. The electrode layer includes a plurality of first electrodes, a plurality of second electrodes, and a plurality of metal pads that are spaced apart from the first electrodes and the second electrodes. The first electrodes are arranged in rows parallel to each other, the second electrodes are arranged in columns parallel to each other, and at least one of the rows and at least one of the columns are arranged across the annular signal channel that is provided without any metal pad therein. A projection space defined by orthogonally projecting the grounding layer along the thickness direction is overlapped with the first electrodes and the second electrodes.

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Hsin-Chu, Taiwan

Hui-Chen Hsu