Keypad assembly

Details Keypad assembly Keypad assembly

2011-05-03

2011-05-03

Friedhofer, Michael A (Department: 2833)

Electricity: circuit makers and breakers

Electric switch details

Indicators

C200S0050EA, C200S512000, C200S314000, C200S317000

Reexamination Certificate

active

07935904

ABSTRACT:
Provided is a keypad assembly used as a data input unit in various electronic devices. The keypad assembly includes a main board having one or more metal domes formed at predetermined positions on the main board, and a keypad disposed on the main board to apply a pressure on the metal dome and to be used as a touchpad according to a mode selection, the keypad includes a keytop layer having one or more keytops on which corresponding alphanumeric characters are formed, a touchpad layer disposed under the keytop layer; and a base layer disposed under the touchpad layer, and having one or more protrusions protruding from its bottom surface at the positions corresponding to the metal dome.

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