Capacitive touch keyboard

摘要

A capacitive touch keyboard includes a sensor layer, ground plane, a flexible sensed body, and a sensing circuit. The sensor layer includes a substrate and a key sensing cell which disposed on the substrate spaced apart from the ground plane. The flexible sensed body includes a sensed portion and a connected portion connected with the ground plane where the sensed portion obliquely extends to above the key sensing cell such that the flexible sensed body and the key sensing cell jointly form a capacitor structure. The sensing circuit is electrically connected to the sensing cell for probing a capacitance change. Therefore, features of more simplified structure design, tactile feel, and improved durability are provided in a capacitive keyboard.

主权项

1. A capacitive touch keyboard, comprising:
a sensor layer comprising a substrate and a key sensing cell; a ground plane disposed along with the key sensing cell on the substrate and spaced apart from the key sensing cell; a flexible sensed body comprising a sensed portion and a connected portion, wherein the connected portion is connected with the ground plane and the sensed portion extends from the connected portion to above the key sensing cell such that the flexible sensed body and the key sensing cell jointly form a capacitor structure; and a sensing circuit electrically connected to the key sensing cell to probe a capacitance change.