Touch-sensitive key structure

Abstract

This invention, as a touch-sensitive icon key structure, includes a carrier board and multiple icon-sensitive keys disposed on its surface. Each icon-sensitive key includes multiple sub-electrodes, which are spaced apart from each other and do not make electrical contact with each other. Each sub-electrode is assigned a serial number, and the combination of serial numbers formed by the sub-electrodes of any icon-sensitive key is unique. By determining which sub-electrodes are simultaneously touched by the user to generate a sensing signal, the corresponding touched icon-sensitive key can be accurately identified based on the combination of serial numbers of these sub-electrodes, avoiding misjudgment of the icon-sensitive key and subsequent erroneous actions.

Claims

1. A touch-sensitive icon key structure, comprising: a carrier plate on which a plurality of icon-sensitive keys are disposed, wherein, Each illustrative sensor key includes: a plurality of sub-electrodes, wherein adjacent sub-electrodes are spaced apart from each other and do not make electrical contact with each other, and each sub-electrode is assigned a serial number; wherein each illustrative sensor key includes the same number of sub-electrodes; the serial number combination formed by the plurality of sub-electrodes of any illustrative sensor key is unique; sub-electrodes with the same serial number in different illustrative sensor keys are electrically connected together.

2. The touch-sensitive key structure as described in claim 1, wherein, The carrier board is a flexible circuit board.

3. The touch-sensitive key structure as described in claim 1, wherein, The centers of two adjacent illustrated touch keys are 12mm apart.

4. The touch-sensitive key structure as described in claim 1, wherein, Each illustrated sensor key contains three of these sub-electrodes.

5. The touch-sensitive key structure as described in claim 4, wherein, The centers of two adjacent sub-electrodes in each illustrated sensing key are 2.5 mm apart.

6. The touch-sensitive key structure as described in claim 4, wherein the carrier board is provided with three touch-sensitive keys, namely a first touch-sensitive key, a second touch-sensitive key and a third touch-sensitive key; the three sub-electrodes of the first touch-sensitive key are numbered first, second and third respectively; the three sub-electrodes of the second touch-sensitive key are numbered first, second and fourth respectively; the three sub-electrodes of the third touch-sensitive key are numbered first, third and fourth respectively.

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