CONTACT LUMINOUS ELEMENT WITH VARIABLE CONTACT SURFACE

摘要

PURPOSE: A contact luminous element with a variable contact surface is provided to vary a surface of the element or form a surface of the element into a curved surface, thereby preventing a deformation of a ridge of fingerprint by a contact pressure. CONSTITUTION: The contact luminous element(11) with a variable contact surface comprises an elastic transparent insulation plate(14,20) bonded to a lower face of the element, and a variable portion for pushing a side of the transparent insulation plate by a contact pressure to vary a curved face of the element when a fingerprint is contacted to a surface of the element. In the element, the transparent insulation plate is bonded to the element by a transparent insulation adhesive. The transparent insulation plate is formed of a transparent insulation polymer and has an initial curved surface when contacting with the variable portion. The variable portion comprises a supporting member(21) of which one end is fixed to both sides of the transparent insulation plate and the other end is formed with a protruded piece(21a), and a guide member(22) having a channel groove(22a) for guiding the supporting member.