Patent ID: 8581127

Claim:
A key structure with a scissors-type connecting member, said key structure comprising: a base plate; a keycap having a light-transmissible region and an extension sidewall, wherein said light-transmissible region is located at a surface of said keycap, said extension sidewall is located at a periphery of said keycap, and a protrusion structure located at a first side and a second side of said extension sidewall and extending downward beyond a bottom of said extension side wall; said scissors-type connecting element arranged between said base plate and said keycap for connecting said base plate and said keycap, and allowing said keycap to be moved upwardly and downwardly relative to said base plate; and a light-emitting element disposed under said keycap for emitting light beams, wherein when said light beams are directed to said keycap, first portions of said light beams are transmitted through said light-transmissible region to illuminate said keycap, and second portions of said light beams are blocked by said protrusion structure to avoid light leakage.