Patent ID: 7164089

Claim:
A thin keyboard structure comprising: a substrate having a base, a first portion with a first end and a second portion with a second end, wherein the first portion and the second portion are connected with the base; the first portion protrudes from the base at a first included angle; the first end is aligned with the second end and separated from the second end by a distance; the first portion may be forced to deform to contact the second end; a flexible circuit having a predetermined circuit over the substrate, wherein the predetermined circuit comprises a first contact fixed on the first end and a second contact fixed on the second end, when the first end contacts the second end, the first contact electrically connects to the second contact; and a keycap having a first connecting device fixed on the first portion protruding from the base; when the keycap is forced to push the connecting device, the first portion is deformed to electrically connect the first contact and the second contact; when releasing the forced keycap, the deformed portion returns to its native position to electrically disconnect the first contact and the second contact.