A slim-type keyboard includes a first flexible layer, a pressed frame and a circuit board assembly. The first flexible layer includes plural pressed regions. The pressed frame includes plural cantilever strips. The circuit board assembly includes plural dome switches. The plural cantilever strips are covered by the first flexible layer. The pressed regions are aligned with the cantilever strips and the dome switches, respectively. When one of the pressed regions is pressed, the cantilever strip is pushed down to trigger the corresponding dome switch. Each cantilever strip includes a U-shaped groove and a suspension end. The U-shaped groove opens to the suspension end. Consequently, the tactile feel of pressing the cantilever strip is improved.

An actuating unit for an electrical switching element includes an actuating surface for actuating the electrical switching element, which is integrally a part of a surface of a housing for the electrical switching element, and is adapted to be deformed towards an interior of the housing for actuating the electrical switching element; an actuating pin integral with said actuating surface; and mechanically coupled to said actuating surface; and adapted to mechanically couple said actuating surface to said electrical switching element to actuate said electrical switching element; and a limiting pin integral with the actuating surface; and mechanically coupled to the actuating surface; and adapted to limit deformation of the actuating surface.

A slim-type keyboard includes a first flexible layer, a pressed frame and a circuit board assembly. The first flexible layer includes plural pressed regions. The pressed frame includes plural cantilever strips. The circuit board assembly includes plural dome switches. The plural cantilever strips are covered by the first flexible layer. The pressed regions are aligned with the cantilever strips and the dome switches, respectively. When one of the pressed regions is pressed, the cantilever strip is pushed down to trigger the corresponding dome switch. Each cantilever strip includes a U-shaped groove and a suspension end. The U-shaped groove opens to the suspension end. Consequently, the tactile feel of pressing the cantilever strip is improved.

A capacitive sensitive key structure includes a key, support component, fixing pad, substrate and conductive portion. The key includes a key body and a connection wall which encloses a receiving space. The support component is disposed in the receiving space and includes a body, conical wall, buffering space, and extending pad connected to the conical wall. The body abuts against the key body. The conductive portion is disposed at the bottom of the body and inside the buffering space. The substrate is connected to the fixing pad and has thereon a circuit unit and a sensing layer. The substrate is coated with an insulating layer which covers the sensing layer. When the key body is pressed to press against the support component, electrostatic changes occur because of changes in the distance between the conductive portion and the sensing layer; hence, the circuit unit sends electrical signals for driving electronic apparatuses.

A capacitive sensitive key structure includes a key, support component, fixing pad, substrate and conductive portion. The key includes a key body and a connection wall which encloses a receiving space. The support component is disposed in the receiving space and includes a body, conical wall, buffering space, and extending pad connected to the conical wall. The body abuts against the key body. The conductive portion is disposed at the bottom of the body and inside the buffering space. The substrate is connected to the fixing pad and has thereon a circuit unit and a sensing layer. The substrate is coated with an insulating layer which covers the sensing layer. When the key body is pressed to press against the support component, electrostatic changes occur because of changes in the distance between the conductive portion and the sensing layer; hence, the circuit unit sends electrical signals for driving electronic apparatuses.