A backlit keyboard includes key switches and a backlight module. The backlight module includes a light guide plate, a reflecting surface, and at least one light-emitting device. The light guide plate is provided with light-guiding dots disposed on a bottom surface thereof. A light-shielding layer disposed on the light guide plate has a light-shielding portion and a light-transmitting portion corresponding to at least one of the key switches. The reflecting surface faces the bottom surface of the light guide plate, and a pattern at least partially overlaps the light-shielding portion. A first light-emitting device and a second light-emitting device are disposed in an opening of the light guide plate, and the first light-emitting device and the second light-emitting device face respective sidewalls of the opening. The first light-emitting device is located underneath the light-shielding portion.

A backlit keyboard includes key switches and a backlight module. The backlight module includes a light guide plate, a reflecting surface, and at least one light-emitting device. The light guide plate is provided with light-guiding dots disposed on a bottom surface thereof. A light-shielding layer disposed on the light guide plate has a light-shielding portion and a light-transmitting portion corresponding to at least one of the key switches. The reflecting surface faces the bottom surface of the light guide plate, and a pattern at least partially overlaps the light-shielding portion. A first light-emitting device and a second light-emitting device are disposed in an opening of the light guide plate, and the first light-emitting device and the second light-emitting device face respective sidewalls of the opening. The first light-emitting device is located underneath the light-shielding portion.

The invention relates to an apparatus for detecting a key press comprising a circuit substrate, a key module with a key cap and a movement mechanism, and a device for detecting the movement of the key cap, wherein the movement mechanism has at least one movement element wherein this device comprises an electrical resonance circuit with at least one capacitor and with a primary coil and comprises a secondary coil wherein the device for detecting the movement of the key cap comprises a measuring device for detecting and/or processing at least one physical variable of the electrical resonance circuit, which variable changes during the movement of the key cap, and outputs at least one electrical signal that is dependent on the change in the physical variable. The invention also relates to a keyboard comprising one or more such apparatuses and to a method for detecting a key press.

The invention relates to an apparatus for detecting a key press comprising a circuit substrate, a key module with a key cap and a movement mechanism, and a device for detecting the movement of the key cap, wherein the movement mechanism has at least one movement element wherein this device comprises an electrical resonance circuit with at least one capacitor and with a primary coil and comprises a secondary coil wherein the device for detecting the movement of the key cap comprises a measuring device for detecting and/or processing at least one physical variable of the electrical resonance circuit, which variable changes during the movement of the key cap, and outputs at least one electrical signal that is dependent on the change in the physical variable. The invention also relates to a keyboard comprising one or more such apparatuses and to a method for detecting a key press.

The invention relates to an apparatus for detecting a key press comprising a circuit substrate, to a key module with a key cap and a movement mechanism, and to a device for detecting the movement of the key cap, wherein this device comprises an electrical resonance circuit with a primary coil and a secondary coil with a short-circuited winding, which secondary coil is moved with the key cap, wherein the primary coil and the secondary coil are inductively coupled to one another, and the strength of the inductive coupling between the primary coil and secondary coil and thus at least one physical variable of the resonance circuit change during the movement of the key cap. The invention also relates to a keyboard comprising one or more such apparatuses and to a method for detecting a key press.

The invention relates to an apparatus for detecting a key press comprising a circuit substrate, to a key module with a key cap and a movement mechanism, and to a device for detecting the movement of the key cap, wherein this device comprises an electrical resonance circuit with a primary coil and a secondary coil with a short-circuited winding, which secondary coil is moved with the key cap, wherein the primary coil and the secondary coil are inductively coupled to one another, and the strength of the inductive coupling between the primary coil and secondary coil and thus at least one physical variable of the resonance circuit change during the movement of the key cap. The invention also relates to a keyboard comprising one or more such apparatuses and to a method for detecting a key press.

The present invention provides a keycap, method for manufacturing a keycap, and keyswitch. The keycap comprises an inner keycap member, an outer keycap member, and a character layer. The inner keycap member comprises an inner body and an inner sidewall. The inner sidewall is disposed on the periphery of the inner body. The outer keycap member is disposed on the inner keycap member. The outer keycap member comprises an outer body and an outer sidewall. The outer sidewall is disposed on the periphery of the outer body. The outer body is corresponding to the inner body. The outer sidewall corresponds to the inner sidewall. The character layer is disposed between the inner keycap member and the outer keycap member. The character layer comprises a character pattern disposed between the outer body and the inner body.

The present invention provides a keycap, method for manufacturing a keycap, and keyswitch. The keycap comprises an inner keycap member, an outer keycap member, and a character layer. The inner keycap member comprises an inner body and an inner sidewall. The inner sidewall is disposed on the periphery of the inner body. The outer keycap member is disposed on the inner keycap member. The outer keycap member comprises an outer body and an outer sidewall. The outer sidewall is disposed on the periphery of the outer body. The outer body is corresponding to the inner body. The outer sidewall corresponds to the inner sidewall. The character layer is disposed between the inner keycap member and the outer keycap member. The character layer comprises a character pattern disposed between the outer body and the inner body.

A keyswitch backlight structure includes a light-guiding layer, a reflective layer, and a transparent adhesive layer. The light-guiding layer has a bottom surface, a light-emitting surface opposite to the bottom surface, and a surface microstructure formed on the light-emitting surface. The reflective layer is disposed opposite to the bottom surface. The transparent adhesive layer is closely attached to and between the reflective layer and the light-guiding layer corresponding to the surface microstructure. An illuminated keyswitch structure includes base plate, a keycap, a supporting mechanism, and the above keyswitch backlight structure. The keyswitch backlight structure and the base plate are stacked. The supporting mechanism is connected to and between the base plate and the keycap for lifting the keycap relative to the base plate. Light entering the light-guiding layer exits the light-guiding layer through the light-emitting surface to illuminate a transparent indication area of the keycap.

A keyboard backlight module includes a light guide plate, a reflector, a light-emitting device and a first microstructure. The light guide plate has an output surface, a light guide pattern and a bottom surface disposed on an opposite side of the output surface. The light guide pattern is arranged on at least one of the bottom surface and the output surface. The reflector has a reflecting surface facing the bottom surface. The light-emitting device is disposed on one side of the light guide plate and configured to provide an incident light to the reflecting surface. The first microstructure is disposed on the reflecting surface, at least partially overlaps with the light guide pattern, and is configured to transform the incident light into a first reflected light.