Patent ID: 9117603
Filing Date: 2015-08-25
Classification: H01H

Abstract:
1. An illuminated keyboard, comprising: a thin key module which includes a support frame with a plurality of keycap installation apertures and a plurality of keycaps corresponding to the keycap installation apertures, each keycap including four sides and four corners, each side of the keycap and each keycap installation aperture including respectively a first wall and a second wall, each keycap including at least three movable arms each being connected between the first wall and the second wall, the keycaps, the movable arms and the support frame being integrally formed by injection, the movable arm including a first connecting section connected to one corner of the keycap and a second connecting section connected to the first connecting section at a first bend spot, the second connecting section being extended towards the neighboring corner of the keycap and connected to the second wall of the keycap installation aperture; a light guide circuit board which is located below the thin key module and includes an upper light guide portion and a lower light guide portion, the upper light guide portion and the lower light guide portion including respectively a first circuit layer and a second circuit layer facing each other, the first circuit layer and the second circuit layer being interposed by a command trigger switch corresponding to each keycap, the upper light guide portion including a first mask layer opposite to the first circuit layer, the lower light guide portion including a second reflective layer opposite to the second circuit layer, the first mask layer and the second reflective layer forming an optical channel between them, the first mask layer including at least one transparent zone corresponding to the keycap to allow light transmitted in the optical channel to project to the keycap; and a baseboard located correspondingly to the light guide circuit board.