The signal input device according to an embodiment of the present inventive concept may have effects in that the number of buttons included in the signal input device can be reduced because different types of input signals can be generated depending on a direction of a laterally pushed manipulation force, and a configuration can be simplified, a production cost can be significantly reduced and two or more input signals can be simultaneously generated because a laterally pushed manipulation force can be detected although a separate pressure sensor is not provided.

The signal input device according to an embodiment of the present inventive concept may have effects in that the number of buttons included in the signal input device can be reduced because different types of input signals can be generated depending on a direction of a laterally pushed manipulation force, and a configuration can be simplified, a production cost can be significantly reduced and two or more input signals can be simultaneously generated because a laterally pushed manipulation force can be detected although a separate pressure sensor is not provided.

A sensor pad is provided. The sensor pad comprises a first layer and a second layer of padding material, each having an inner face. The inner face of the first layer is provided with a first printed conductive ink track and the inner face of the second layer is provided with a second printed conductive ink track. At least one of the layers is provided on its inner face with a plurality of raised portions between adjacent runs of the printed track to provide a spacer layer across the sensor pad, which improves the ability of the sensor pad to return to a pre-impact configuration following an impact. The plurality of raised portions maintain the two printed tracks apart when the sensor is unstressed but allow localised contact between the first and second printed tracks when pressure is applied to the sensor pad.

An electronic device may include a first member that forms at least a part of an exterior of the electronic device and includes an opening; a second member that is disposed inside the electronic device; at least one electronic component that is disposed between the first member and the second member not to overlap with the opening of the first member; and a button device disposed inside the electronic device. The button device may include a button that is inserted into the opening of the first button and a dome switch that is disposed at a position where the dome switch is pressed by the button.

A sensor is provided, the sensor comprising a first layer (10) of padding material having an inner face and a second layer (12) of padding material having an inner face. The inner faces of the two layers face one another. The inner face of the first layer (10) is provided with a first printed conductive ink track (13) and the inner face of the second layer (12) is provided with a second printed conductive ink track (15). At least one of the printed tracks (13, 15) passes across the pad in a number of runs at a plurality of spaced locations. The first track (13) on the first layer (10) intersects at a plurality of locations with the second track (15) on the second layer (12). At least one of the layers (10, 12) is provided on its inner surface with a plurality of raised portions (12) arranged over the face of the layer (10, 12) between adjacent runs of the conductive track (13, 15) and facing the inner face of the other layer (12, 10) to maintain the two tracks (13, 15) apart when the sensor pad is unstressed, but which are compressible to deform to allow localised contact between the first and second tracks (13, 15) when pressure is applied to the pad.