Patent ID: 7982149
Filing Date: 2011-07-19
Classification: H01H

Abstract:
1. A key switch assembly, comprising: a key button having a display portion; a movement assembly in contact with the key button and positioned on an optical surface that transmits light up from the optical surface, the movement assembly facilitating vertical movement of the key button between an up position and a down position and defining an aperture through which light transmitted by the optical surface is projected onto the display portion of the key button; and a feedback assembly in contact with the movement assembly and positioned on the optical surface, the feedback assembly providing tactile feedback for the key button from outside the aperture when the key button is moved to the down position, wherein at least one of the key button, the movement assembly, and the feedback assembly provides a reflective surface to reflect light transmitted by the optical surface for sensing the up position and down position of the key button.