Patent ID: 9653231
Date: 2017-05-16
CPC Classifications: H01H,H03K

Claim:
1. A luminous keyboard, comprising: a sensing membrane wiring board comprising a sensing circuit pattern formed on said sensing membrane wiring board for generating at least one non-contact key signal; at least one key, wherein when said at least one key is depressed, said at least one non-contact key signal is correspondingly generated by said sensing circuit pattern; a lateral-emitting type illumination element for providing a light beam; a light guide panel, wherein said lateral-emitting type illumination element is located at a lateral side of said light guide panel, and said light guide panel has at least one light-guiding dot for collecting and scattering said light beam from said lateral-emitting type illumination element; a supporting plate for connecting and supporting said at least one key, wherein said supporting plate has at least one light-transmissible part corresponding to said at least one key; and a light-transmissible substrate arranged between said supporting plate and said light guide panel, wherein said light-transmissible substrate comprises at least one light diffusion structure corresponding to said at least one key for changing an optical path of said light beam from said at least one light-guiding dot, so that said light beam from said at least one light-guiding dot is sequentially transmitted through said at least one light diffusion structure and said at least one light-transmissible part and then directed to said at least one key; wherein said sensing membrane wiring board is arranged between said light guide panel and said supporting plate; wherein said at least one light diffusion structure comprises plural microstructures, and said plural microstructures are formed on said light-transmissible substrate; or wherein said at least one light diffusion structure is at least one lens, and said at least one lens is formed on said light-transmissible substrate; or wherein said at least one light diffusion structure has a lens profile, and said at least one light diffusion structure is integrally formed with said light-transmissible substrate.