Luminous keyboard

A luminous keyboard, comprising:

• at least one key exposed outside the luminous keyboard;
• a membrane switch circuit member located under the at least one key, and comprising an upper wiring plate, a lower wiring plate and a separation plate, wherein when the membrane switch circuit member is triggered by the at least one key, a corresponding key signal is generated, wherein the upper wiring plate is contacted with the at least one key, the lower wiring plate is located under the upper wiring plate, a separation layer is arranged between the upper wiring plate and the lower wiring plate, and the upper wiring plate and the lower wiring plate are separated from each other by the separation layer;
• a supporting plate located under the membrane switch circuit member and connected with the at least one key;
• and
• a backlight module located under the supporting plate, and generating a light beam and projecting the light beam to the at least one key, wherein a periphery region of at least one of the upper wiring plate, the lower wiring plate and the separation plate is extended over the supporting plate and bent to cover a periphery region of the supporting plate and a periphery region of the backlight module, so that the light beam is not leaked out through the periphery region of the backlight module,
• wherein the at least one key comprises:
• a keycap exposed outside the luminous keyboard, wherein the keycap comprises at least one light-outputting zone, and the light beam is transmitted through the at least one light-outputting zone;
• a connecting element arranged between the supporting plate and the keycap, wherein the supporting plate is connected with the keycap through the connecting element, so that the keycap is movable upwardly or downwardly relative to the supporting plate;
• and
• an elastic element arranged between the keycap and the upper wiring plate, wherein while the keycap is depressed to push the elastic element, the upper wiring plate is pressed by the elastic element, and
• wherein the backlight module comprises:
• a light guide plate located under the supporting plate to guide the light beam to the at least one light-outputting zone, wherein the light guide plate comprises a light guide plate opening;
• a light-emitting element emitting the light beam;
• a reflecting plate located under the light guide plate, wherein when a portion of the light beam is exited from the light guide plate, the light beam is reflected back into the light guide plate by the reflecting plate, wherein the reflecting plate comprises a reflecting plate opening;
• a circuit board located under the reflecting plate and electrically connected with the light-emitting element, wherein the light-emitting element is supported on the circuit board, and the light-emitting element is inserted into the reflecting plate opening and the light guide plate opening, so that the light beam is introduced into the light guide plate;
• and
• a light-sheltering plate, which is arranged between the light guide plate and the supporting plate to shelter the light beam, wherein the light-sheltering plate comprises at least one light-sheltering plate opening corresponding to the at least one light-outputting zone, and the light beam is transmitted through the at least one light-sheltering plate opening of the light-sheltering plate.