A backlight module including a circuit layer, a light guide plate, a light-emitting component, an electronic component, a reflective layer, and an identifier is provided. The light guide plate includes an escape opening and a light-source opening. The light-emitting component is connected to the circuit layer. The electronic component is connected to the circuit layer. The reflective layer is disposed between the light guide plate and the circuit layer. The identifier is disposed on the reflective layer. A keyboard using this backlight module is also provided.

A pushbutton includes a base extending in a longitudinal direction, a sensor module mounted to the base, a keycap disposed above the sensor module, two scissor switch modules, a main pushbutton module and two side pushbutton modules. The sensor module has a first sensing member and two second sensing members. The main pushbutton module is operable to switch between a released state, where the main pushbutton module is not in direct contact with the first sensing member such that each of the scissor switch modules would not be in direct contact with a respective one of the second sensing members, and a depressed state, where the main pushbutton module comes in direct contact with the first sensing member.

A keyboard includes a substrate, a limit connecting member, a keycap, and a liftable connecting member. The assembly area of the substrate includes a through hole and a curved side wall standingly disposed on the substrate. The bottom edge of the curved side wall is adjacently connected to a periphery portion of the through hole. One side of the curved side wall facing the through hole includes a recessed groove. The limit connecting member is disposed on the assembly area and includes an inner fixing portion received in the through hole and an outer fixing portion enclosing the curved side wall and fixing with the inner fixing portion. The inner fixing portion has a protruding portion received in the recessed groove. The keycap is disposed on the assembly area. The liftable connecting member is connected between the keycap and the assembly area and is assembled with the limit connecting member.

A compression brake control shifter for convenient and safe compression brake control from the shifter includes a shifter body. The shifter body is configured to connect to a shift lever of a truck to manipulate a gear system of the truck. The truck has a gear splitter and a compression brake. A wiring harness is coupled to the shifter body and extends through the bottom side to be in operational communication with a CPU of the truck. A compression button, a hi/low gears switch, and a gear splitter switch are coupled to the shifter body and are in operational communication with the wiring harness to activate and alternatively deactivate the compression brake of the truck, to switch to and from a hi gear mode and a low gear mode of the gear system, and to activate and alternatively deactivate the gear splitter of the truck, respectively.

A keyswitch assembly is provided. The keyswitch assembly includes a base plate, at least one pressing mechanism disposed on the base plate, a plurality of elastic members disposed on the base plate, and a keycap covering the at least one pressing mechanism and the plurality of elastic members. In the embodiments, a plurality of elastic members is disposed at equal intervals to support the keycap. By way of such configuration, the user experiences the same or similar hand feeling when pressing any point of the keycap. There is no difference in the pressing feel due for pressing the middle or two ends of the keycap. Meanwhile, the problem of the poor electrical conduction resulted from the deformation of the keycap may be avoided.

A light-emitting assembly positioned within a switch housing of a keyboard assembly for an electronic device is disclosed. The light-emitting assembly may include a phosphor structure, a transparent material positioned on opposing side surfaces of the phosphor structure, and an epoxy layer formed over an entire back surface of the phosphor structure and the transparent material. The light-emitting assembly may also include a mask layer formed over an entire top surface of: the phosphor structure, the transparent material, and the epoxy layer. The light-emitting assembly may further include a light source positioned within the phosphor structure for emitting a light.

A keyboard device includes a substrate, a connection hook, a keycap, and a connecting member. The substrate has a top surface including an assembly area. The connection hook is disposed on the assembly area and includes a fixed seat fixed on the substrate, a standing portion, and a reinforcement block. The standing portion is extending from the fixed seat and extending in a direction away from the fixed seat. A hook portion is laterally extending from a top end of the standing portion, the hook portion has a bottom edge. The reinforcement block is connected to the standing portion and the bottom edge. The keycap is disposed on the assembly area. The connecting member is connected between the keycap and the assembly area. The connecting member includes a shaft slidably pivoted at the bottom edge. An inner side of the shaft includes an avoidance groove corresponding to the reinforcement block.

A key structure, including a keycap, a scissor component, an elastomer, an optical switch, a shading portion, and a circuit board, is provided. The scissor component is formed of a first and a second supporter. The circuit board has two first and two second limiting units. The keycap has two third and two fourth limiting units. The first supporter is rotatably or slidably connected to the first and the third limiting units. The second supporter is rotatably or slidably connected to the second and the fourth limiting units. The keycap is disposed on the circuit board through the scissor component. The elastomer is interposed between the circuit board and the keycap. The optical switch includes an emitter and a receiver. The shading portion is disposed on the first or the second supporter to block a light signal transmitted between the emitter and the receiver.

A key structure includes a keycap, a connection assembly, engaging members, and a base plate. The connection assembly disposed between the base plate and the keycap is movably connected to the keycap and the engaging members, so that the keycap and the connection assembly engaged with the engaging members are positioned on the base plate. The base plate includes engaging protrusions protruding from an upper surface, so that the engaging members are bonded to the base plate through the engaging protrusions. Each engaging protrusion is located between two openings of the base plate, connects the two openings, or is disposed corresponding to the openings. Each engaging member covers one or more engaging protrusions through injection molding, and is fixed to the base plate. The engaging members are respectively disposed on the openings, fill the openings, or completely cover the engaging protrusions.

A cap structure movably connected to first and second support members of a keyswitch is disclosed. The first and second support members are movably connected to a board of the keyswitch. An end portion of the first support member is connected to the cap structure and has a shaft structure. The cap structure includes a cap body, a slot structure, and a limiting structure. A bottom surface of the cap body extends along an X-axis and a Y-axis. The slot structure protrudes from the bottom surface along a Z-axis and has a first slot corresponding to a first end of the shaft structure along the X-axis for allowing the first end to be movably inserted into the first slot. The limiting structure protrudes from the bottom surface along the Z-axis for blocking movement of the shaft structure along the Y-axis to limit the first end in the first slot.