Patent ID: 6936783

Claim:
A push-button switch member comprising: a key-top portion for pressing a movable contact point which is disposed against a stationary contact point on a circuit board so as to oppose the stationary contact point; and a cover base member provided with said key-top portion at a predetermined portion of said key-top portion and adapted to be mounted to the circuit board; wherein said key-top portion comprises a display section operable to display a switching function, a base electrode, a transparent electrode disposed so as to oppose said base electrode and to contact with said display section, said transparent electrode being continuously and integrally formed in a range including and between a side surface and an upper surface of said key-top portion, and said transparent electrode comprising a transparent conductive polymer which is selected from the group consisting of a derivative of polypyrrole, a derivative of polythiophene and a derivative of polyaniline, and an area emitter member integrally formed with said display section, said area emitter comprising a light emitting layer which is disposed between said base electrode and said transparent electrode.