Patent ID: 9437379
Filing Date: 2016-09-06
CPC Classification: H01H

Claim Text:
1. An illuminated keyboard, comprising: a light-permeable covering plate having a plurality of first key openings; a key symbol display plate disposed on the light-permeable covering plate and having a plurality of second key openings and a plurality of light-permeable key symbol blocks positioned proximate to the second key openings, respectively, the second key openings corresponding in position to the first key openings, respectively; a key module disposed beneath the light-permeable covering plate and having a plurality of keys and a light-permeable key holding plate, the keys being disposed at the light-permeable key holding plate, spaced apart from each other, and disposed in the first key openings and the second key openings, respectively; a light-permeable circuit film disposed beneath the key module; a backlight device disposed beneath the light-permeable circuit film and provided in form of one of a light guiding plate with a light source and an electroluminescent plate, the light guiding plate having a plurality of reflection blocks corresponding in position to the light-permeable key symbol blocks, respectively, and the electroluminescent plate corresponding in position to the light-permeable key symbol blocks; and a bottom casing disposed beneath the backlight device and coupled to the light-permeable covering plate so as to enclose the key module, the light-permeable circuit film, and the backlight device.