An electronic device includes an enclosure and a keyboard positioned within the enclosure. The keyboard includes a substrate and a key mechanism. The key mechanism includes a keycap support mechanism, a keycap supported by the keycap support mechanism and movable relative to the substrate, a ferromagnetic component attached to the keycap support mechanism, and a selectively magnetizable magnet. The selectively magnetizable magnet system may include a magnetizable material and a coil configured to selectively magnetize and demagnetize the magnetizable material. The key mechanism may include a collapsible dome biasing the keycap toward the extended position.

An electronic device includes an enclosure and a keyboard positioned within the enclosure. The keyboard includes a substrate and a key mechanism. The key mechanism includes a keycap support mechanism, a keycap supported by the keycap support mechanism and movable relative to the substrate, a ferromagnetic component attached to the keycap support mechanism, and a selectively magnetizable magnet. The selectively magnetizable magnet system may include a magnetizable material and a coil configured to selectively magnetize and demagnetize the magnetizable material. The key mechanism may include a collapsible dome biasing the keycap toward the extended position.

A backlight module including a light guide plate, a circuit board, an electronic component, a reflective sheet, a light-shielding sheet, and a light-emitting component is provided. The light guide plate includes an escape opening. The circuit board is disposed under the light guide plate. The electronic component is disposed on the circuit board, and at least a part of the electronic component is located in the escape opening. The reflective sheet is disposed on the rear surface of the light guide plate and between the light guide plate and the circuit board, and the reflective sheet extends into the escape opening. The light-shielding sheet is disposed on the light emitting surface of the light guide plate opposite to the rear surface. The light-emitting component is disposed on the light guide plate. A luminous keyboard using this backlight module is also provided.

A backlight module including a light guide plate, a circuit board, an electronic component, a reflective sheet, a light-shielding sheet, and a light-emitting component is provided. The light guide plate includes an escape opening. The circuit board is disposed under the light guide plate. The electronic component is disposed on the circuit board, and at least a part of the electronic component is located in the escape opening. The reflective sheet is disposed on the rear surface of the light guide plate and between the light guide plate and the circuit board, and the reflective sheet extends into the escape opening. The light-shielding sheet is disposed on the light emitting surface of the light guide plate opposite to the rear surface. The light-emitting component is disposed on the light guide plate. A luminous keyboard using this backlight module is also provided.

A movement mechanism includes: a case; a moving portion movable with respect to the case; and a support member that links the case and moving portion together and supports the moving portion so as to be movable with respect to the case. The support member has a plurality of pairs of first support portions and a plurality of pairs of second support portions, each of which is elastically deformable, has a plate-like shape, and extends between the case and the moving portion. The first support portions and second support portions are respectively placed on a first side and a second side in a moving direction of the moving portion so as to be symmetric with respect to the moving portion in plan view.

An electronic device has a keyboard with an internal membrane. The membrane has a set of strain gauges configured to respond to a key press, such as when a collapsible dome collapses into contact with the membrane. The strain gauges are connected in a half Wheatstone bridge configuration and are positioned on the membrane in order to limit effects of temperature and subtle flexure of the membrane. The strain gauges are also configured to magnify detection of a resistance differential when a keycap is pressed with sufficient force.

An electronic device has a keyboard with an internal membrane. The membrane has a set of strain gauges configured to respond to a key press, such as when a collapsible dome collapses into contact with the membrane. The strain gauges are connected in a half Wheatstone bridge configuration and are positioned on the membrane in order to limit effects of temperature and subtle flexure of the membrane. The strain gauges are also configured to magnify detection of a resistance differential when a keycap is pressed with sufficient force.

A control device includes a button assembly having one or more buttons and a button carrier that includes a plurality of resilient, independently deflectable spring arms. The control device may be configured as a wall-mounted keypad to control a load control device, or as a thermostat to control a temperature regulation appliance. The button carrier may be configured to prevent interference between the buttons during operation of the control device. The button assembly may be captured between a faceplate of the control device and a housing that is attached to a rear side of the faceplate. The control device may include one or more button retainers that are attached to the buttons and that are configured to align respective outer surfaces of the buttons relative to each other, and relative to the faceplate of the control device, when the buttons are in respective rest positions.

A control device includes a button assembly having one or more buttons and a button carrier that includes a plurality of resilient, independently deflectable spring arms. The control device may be configured as a wall-mounted keypad to control a load control device, or as a thermostat to control a temperature regulation appliance. The button carrier may be configured to prevent interference between the buttons during operation of the control device. The button assembly may be captured between a faceplate of the control device and a housing that is attached to a rear side of the faceplate. The control device may include one or more button retainers that are attached to the buttons and that are configured to align respective outer surfaces of the buttons relative to each other, and relative to the faceplate of the control device, when the buttons are in respective rest positions.

A backlight module including a light guide plate, a circuit board, an electronic component, a reflective sheet, a light-shielding sheet, and a light-emitting component is provided. The light guide plate includes an escape opening and a light-source opening. The circuit board is disposed under the light guide plate. The electronic component is electrically connected to the circuit board, and at least a part of the electronic component is located in the escape opening. The reflective sheet is disposed on a rear surface of the light guide plate and between the light guide plate and the circuit board. The light-shielding sheet is disposed on a light emitting surface of the light guide plate opposite to the rear surface. The light-emitting component is disposed in the light-source opening. A luminous keyboard using this backlight module is also provided.