Patent ID: 7557313

Claim:
A keyswitch, comprising: a substrate; a switch, mounted on the substrate; a supporting device having an upper engagement portion and a lower engagement portion engaged to the substrate; a deformable shielding, having a top portion, being disposed on the substrate and covering the switch and the supporting device, wherein a plurality of apertures are formed on the top portion; and a keycap thereof defining a lower surface and having a plurality of retaining lugs formed on the lower surface, alternatively, the retaining lugs passing through the apertures of the top portion to engage with the upper engagement portion of the supporting device, or the upper engagement portion of the supporting device passing through the apertures of the top portion to engage with the retaining lugs; wherein the supporting device supports the keycap to vertically move relative to the substrate, and the switch is selectively switched on in response to the movement of the keycap.