Patent ID: 8831691

Claim:
A keypad assembly for a portable radiotelephone, comprising: a printed circuit board having a plurality of metal domes; a keypad rubber disposed on the printed circuit board and having bosses formed integrally on the positions corresponding to the plurality of metal domes; a sensing means disposed on the keypad rubber; a key button part disposed on the sensing means, the key button part integrating a keypad and a touch screen panel by having a plurality of key buttons being integrally formed with each other and being positioned such that top planar surfaces of the plurality of key buttons form a single, substantially planar touch screen panel with no spacing in between the top planar surfaces of adjacent keys among the plurality of key buttons, for functioning in one of a keypad mode and a touch screen panel mode; a power supply unit supplying power to the keypad and cutting off power to the touch screen panel in the keypad mode; and an input mode shift key shifting from one of the keypad mode and the touch screen panel mode to the other mode.