A key arrangement includes an activation element, a switch, a mechanical counterforce generating device, and a permanent magnet arrangement. The switch has at least a first state and a second state. The activation element has a basic state and an activation state and is configured to, in case of activation by a user, permit a movement from the basic state into the activation state, and in case of the movement into the activation state to permit a change in the state of the switch. The mechanical counterforce generating device is configured to generate, in case of an activation of the activation element, a first counterforce at least in certain areas. The permanent magnet arrangement is configured to generate, in case of activation of the activation element, a second counterforce at least in certain areas.

A sinkable keyboard device includes a substrate, a first keycap, a second keycap, and a sliding plate. The substrate has an upper surface. The first keycap is liftably disposed on the upper surface and includes a first abutting portion. The second keycap is liftably disposed on the upper surface and includes a second abutting portion. The sliding plate is parallel to the substrate and movable relative to the upper surface along a sliding direction. The sliding plate includes a first guiding member and a second guiding member arranged along the sliding direction. The first guiding member has a first inclined guiding surface, and a first inclined angle is between the first inclined guiding surface and the upper surface. The second guiding member has a second inclined guiding surface, and a second inclined angle different from the first inclined angle is between the second inclined guiding surface and the upper surface.

A key arrangement includes an activation element, a switch, a mechanical counterforce generating device, and a permanent magnet arrangement. The switch has at least a first state and a second state. The activation element has a basic state and an activation state and is configured to, in case of activation by a user, permit a movement from the basic state into the activation state, and in case of the movement into the activation state to permit a change in the state of the switch. The mechanical counterforce generating device is configured to generate, in case of an activation of the activation element, a first counterforce at least in certain areas. The permanent magnet arrangement is configured to generate, in case of activation of the activation element, a second counterforce at least in certain areas.

A sinkable keyboard device includes a substrate, a first keycap, a second keycap, and a sliding plate. The substrate has an upper surface. The first keycap is liftably disposed on the upper surface and includes a first abutting portion. The second keycap is liftably disposed on the upper surface and includes a second abutting portion. The sliding plate is parallel to the substrate and movable relative to the upper surface along a sliding direction. The sliding plate includes a first guiding member and a second guiding member arranged along the sliding direction. The first guiding member has a first inclined guiding surface, and a first inclined angle is between the first inclined guiding surface and the upper surface. The second guiding member has a second inclined guiding surface, and a second inclined angle different from the first inclined angle is between the second inclined guiding surface and the upper surface.

The present invention relates to a luminous keyboard, including a light emitting module capable of generating a beam, keys, and a deckle board. The key includes a keycap. The deckle board is located between the key and the light emitting module, and includes through holes and inclined-surface walls. The keycap stretches into a corresponding through hole. Due to disposition of the inclined-surface wall, the width of an upper end of the through hole is less than the width of a lower end of the through hole. Therefore, the inclined-surface wall can partially cover the keycap, to prevent the beam from leaking out through the through hole. Therefore, the luminous keyboard of the present invention can alleviate a halo phenomenon.