Patent ID: 8890014

Claim:
A luminous keyboard, comprising: a membrane wiring board comprising plural membrane switches; plural keys for correspondingly triggering the plural membrane switches, a light guide plate module disposed under the membrane wiring board, wherein the light guide plate module comprises: a light-guiding layer comprising plural light-outputting regions and a spacing region, wherein the plural light-outputting regions are aligned with respective keys, and the spacing region is arranged around the plural light-outputting regions, wherein plural light-guiding dots are located at the plural light-outputting regions, and at least one light diffusion structure is located at the spacing region; a first reflective layer disposed over the light-guiding layer, and comprising plural light-transmissible regions corresponding to the plural light-guiding dots, respectively; and a second reflective layer disposed under the light-guiding layer; and at least one light-emitting element for providing a light beam to the light-guiding layer, wherein when the light beam is projected onto the at least one light diffusion structure, the light beam is scattered by the at least one light diffusion structure, and the scattered light beam is advanced within a space between the first reflective layer and the second reflective layer, wherein when the scattered light beam is projected onto one of the light-guiding dots, the light beam is directed to the corresponding light-outputting region of the plural light-outputting regions, so that the light beam is transmitted through the corresponding light-outputting region and directed to the corresponding key.