Patent ID: 9531381
Filing Date: 2016-12-27
CPC Classification: H03K

Claim Text:
1. A luminous keyboard, comprising: a sensing circuit pattern 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 out of said light-guide panel toward said at least one key; and a light-transmissible supporting plate arranged above the sensing circuit pattern and between said light guide panel and said at least one key, and the light-transmissible supporting plate connecting and supporting said at least one key, wherein said light-transmissible supporting plate has at least one optical path changing structure, through which said light beam scattered by said at least one light-guiding dot toward said at least one key is directed to a specific area of said at least one key, wherein said at least one optical path changing structure comprises plural microstructures formed on said light-transmissible supporting plate, and each of said plural microstructures is a V-cut structure or a texturing structure.