Patent ID: 8779314

Claim:
A button mechanism comprising: a circuit structure comprising: a substrate; a first electrode layer disposed on the substrate, the first electrode layer comprising: a first section; and a second section, a first end of the second section being connected to a first end of the first section, wherein the second section comprises a first head side, a first inner side and a first outer side, the first inner side and the first outer side are respectively connected to opposite ends of the first head side; and a second electrode layer disposed on the substrate and separating from the first electrode layer, the second electrode layer comprising: a third section, a second end of the second section pointing to a first end of the third section; and a fourth section, a first end of the fourth section being connected to a second end of the third section, a second end of the fourth section pointing to a second end of the first section, wherein a predetermined interval is formed between the first electrode layer and the second electrode layer, and the predetermined interval comprises a plurality of turning portions, wherein the first head side and the first inner side are adjacent to the second electrode layer, and the first outer side does not face any electrode layer, the fourth section comprises a second head side, a second inner side and a second outer side, the second inner side and the second outer side are respectively connected to opposite ends of the second head side, the second head side and the second inner side are adjacent to the first electrode layer, and the second outer side does not face any electrode layer; and an actuating structure, the actuating structure comprising a conductive portion, the conductive portion being for contacting the first electrode layer and the second electrode layer so as to electrically connect the first electrode layer to the second electrode layer.