Patent ID: 9213416
Filing Date: 2015-12-15
Classification: G06F

Abstract:
1. An illuminated keyboard, comprising: a sensing circuit layer for generating at least one non-contact key signal; at least one key disposed over said sensing circuit layer, wherein when said key is depressed, said non-contact key signal is correspondingly generated by said sensing circuit layer; at least one light-emitting element for providing a light beam to said key; a light guide plate disposed under said key for transferring said light beam from said light-emitting element; and at least one light-transmissible elastic element arranged between said key and said light guide plate for providing an elastic force to said key, wherein said light-transmissible elastic element has at least one light-diffusing part, wherein after said light beam from said light-emitting element is transmitted through said light-transmissible elastic element, said light beam is projected onto said key, wherein said sensing circuit layer comprises a first electrode layer, a second electrode layer and a first substrate, wherein said first electrode layer and said second electrode layer are formed on said first substrate, wherein said first electrode layer comprises plural first electrode patterns, and said second electrode layer comprises plural second electrode patterns, wherein when said sensing circuit layer is electrically conductive, plural electric fields between said plural first electrode patterns and said plural second electrode patterns are generated, wherein as a keycap of said key is moved to a position near a corresponding electric field, said corresponding electric field is changed, so that said non-contact key signal is generated by said sensing circuit layer.