An optical keyboard includes an upper cover plate, a bottom plate, a circuit board and plural optical keys. The circuit board is arranged between the upper cover plate and the bottom plate. The circuit board is connected with the upper cover plate that is disposed on the circuit board. The plural keys are penetrated through corresponding openings of the upper cover plate. Moreover, a bottom surface of each optical key is contacted with a top surface of the circuit board. The upper cover plate is an integral structure. Consequently, the components of the optical keyboard are simplified, and the assembling precision is enhanced.

An optical keyboard includes an upper cover plate, a bottom plate, a circuit board and plural optical keys. The circuit board is arranged between the upper cover plate and the bottom plate. The circuit board is connected with the upper cover plate that is disposed on the circuit board. The plural keys are penetrated through corresponding openings of the upper cover plate. Moreover, a bottom surface of each optical key is contacted with a top surface of the circuit board. The upper cover plate is an integral structure. Consequently, the components of the optical keyboard are simplified, and the assembling precision is enhanced.

A photoelectric switch key is provided, which includes a shell, a circuit board, a photosensitive component and a press component. The photosensitive component is electrically connected to the circuit board, and the press component is provided with a light-shielding member. The press component is movably mounted on the shell to enable the light-shielding member to move relative to a light-receiving surface of the photosensitive component. The photosensitive component is capable of receiving external light when the light-shielding member is moved away from the light-receiving surface of the photosensitive component. The light-shielding member is adjacent to and shielding the light-receiving surface of the photosensitive component when the press component is pressed. The light-shielding member is enabled to completely block the external light from irradiating on the photosensitive component when the key is pressed by the user, which achieves the function of the key, and improves the sensitivity of the key.

A photoelectric switch key is provided, which includes a shell, a circuit board, a photosensitive component and a press component. The photosensitive component is electrically connected to the circuit board, and the press component is provided with a light-shielding member. The press component is movably mounted on the shell to enable the light-shielding member to move relative to a light-receiving surface of the photosensitive component. The photosensitive component is capable of receiving external light when the light-shielding member is moved away from the light-receiving surface of the photosensitive component. The light-shielding member is adjacent to and shielding the light-receiving surface of the photosensitive component when the press component is pressed. The light-shielding member is enabled to completely block the external light from irradiating on the photosensitive component when the key is pressed by the user, which achieves the function of the key, and improves the sensitivity of the key.

A key switch is provided, which includes a base, a cap, a first linkage rod, a second linkage rod, an elastic contraction element, at least one activate member and a thin film circuit unit. The base includes a plurality of first connection portions and a plurality of second connection portions. The first linkage rod is movably connected to the first connection portions and the cap. The second linkage rod is movably connected to the second connection portions and the cap. One end of the elastic contraction element is connected to the first linkage rod, and the other end thereof is connected to the second linkage rod. The activate member is disposed on one of the first linkage rod, the second linkage rod and the cap. The thin film circuit unit includes an activate portion.

An optical switch module including a light generation circuit, a light receiving circuit, and a control unit is provided. The light generation circuit includes a light generation unit and a control end, and generates light according to a control signal from the control end. The light receiving circuit includes a light receiving unit and a signal reading end, and is configured to receive light to generate a detection signal at the signal reading end. The control unit is configured to generate the control signal and receive the detection signal. The control unit further selectively configures the signal reading end in an input mode or an output mode. Before the control unit configures the signal reading end in the input mode to read the detection signal, the control unit configures the signal reading end in the output mode to pull up a potential of the light receiving unit.

An optical switch module including a light generation circuit, a light receiving circuit, and a control unit is provided. The light generation circuit includes a light generation unit and a control end, and generates light according to a control signal from the control end. The light receiving circuit includes a light receiving unit and a signal reading end, and is configured to receive light to generate a detection signal at the signal reading end. The control unit is configured to generate the control signal and receive the detection signal. The control unit further selectively configures the signal reading end in an input mode or an output mode. Before the control unit configures the signal reading end in the input mode to read the detection signal, the control unit configures the signal reading end in the output mode to pull up a potential of the light receiving unit.

An optical keyswitch includes a keycap, a support mechanism, and a switch module. The support mechanism is disposed below the keycap and configured to support the keycap moving upward and downward, the support mechanism comprising a first frame and a second frame, the first frame having a sliding end. The switch module includes a circuit board, an emitter, and a receiver, the emitter and the receiver are electrically connected to the circuit board, and the emitter emitting an optical signal to the receiver. When the keycap is pressed, the first frame is driven by the keycap to slide substantially parallel to the circuit board and block the optical signal with the sliding end, so the switch module is triggered to generate a triggering signal.

An input device has an operative member on which switches are arranged to receive a pushing force. The input device has a control unit which is configured to store both a first correction coefficient and a second correction coefficient. The first correction coefficient may correct variations in displacement caused by differences in pushing positions on the operative member. The second correction coefficient may correct differences in sensitivity among a plurality of sensors. The control unit is configured to perform: correcting a plurality of displacements by the first correction coefficient and the second correction coefficient; and determining whether presence or absence of a push operation by comparing a summation of corrected values with a predetermined threshold value.

A keyswitch assembly includes a switch module, a support mechanism, a blocking mechanism, an enhancing light source, and a backlight source. The switch module includes a substrate, a signal generator, and a signal sensor. The signal generator generates a sensing signal. The signal sensor receives the sensing signal to obtain a sensing strength. The support mechanism is disposed on the substrate. The blocking mechanism is disposed on the substrate and has a light-permeable portion. A portion of the blocking mechanism inserts into or escapes from a gap between the signal generator and the signal sensor. The backlight source is disposed on the substrate and located outside the vertical projection of the blocking mechanism on the substrate. The enhancing light source is disposed on the substrate and located within the vertical projection of the blocking mechanism on the substrate and corresponds to the light-permeable portion.