Patent ID: 8878086

Claim:
A luminous keyboard, comprising: at least one light-emitting element for providing light beams to illuminate said luminous keyboard; a membrane circuit member comprising: a lower wiring board comprising a first circuit pattern and plural light-guiding dots, wherein said first circuit pattern comprises plural lower contacts, and said light beams from said light-emitting element are collected and scattered by said plural light-guiding dots, wherein said lower wiring board further comprises a first film layer and a second film layer for increasing an amount of said light beams which are scattered upwardly by said plural light-guiding dots, wherein said first film layer is a light-guiding film layer, and said second film layer is a spacer film layer, wherein said spacer film layer is arranged between said light-guiding film layer and said first circuit pattern for increasing possibility of resulting in total internal reflection when said light beams are incident into said light-guiding film layer; and an upper wiring board comprising a second circuit pattern, wherein said second circuit pattern comprises plural upper contacts corresponding to said plural lower contacts, wherein each of said upper contacts and said corresponding lower contact are separated from each other by a spacing interval, and each of said upper contacts and said corresponding lower contact are collectively defined as a membrane switch; plural keys aligned with said plural membrane switches for conducting corresponding membrane switches; and a key base plate for connecting said plural keys, wherein said key base plate has plural openings corresponding to respective keys, wherein said key base plate is arranged between said plural keys and said membrane circuit member.