Patent ID: 6706983
Filing Date: 2004-03-16
Classification: H01H

Abstract:
A multi-function erroneous contact protection structure for electronic device keyboards comprised of:at least one case having a display opening and plurality of key switch holes arrayed in even rows in a face of said case said face having an upper and bottom surface, wherein an installation hole is disposed at an edge of at least one of said key switch holes; a control circuit Installed inside said case that is utilized to govern operations of an electronic device; a display screen mounted in said display opening, the wiring of which is connected to the control circuit; a plurality of key switches respectively positioned in said key switch holes and projecting from the surface of said case, enabling location of said key switches and generation of different alphanumeric characters and commands to said control circuit following depression; a transparent cover positioned in said Installation hole which protrudes from the surface of said case at a height equal to or greater than that of said key switches and, furthermore, a recess is formed in the bottom surface of said cover; a light-emitting diode is situated inside said recess at said cover bottom surface, with the terminals of said light-emitting diode connected to said electronic device control circuit such that said light-emitting diode is triggered by the operation of said control circuit and a beam projected through said cover.