Cha & Reiter, LLC
Keypad apparatus for portable communication device
Provided is a keypad apparatus for a portable communication device structured to have a Printed Circuit Board (PCB) including a plurality of dome switches and a plurality of Light-Emitting Diodes (LEDs). The keypad apparatus includes a waveguide sheet portion provided on the dome switches, a plurality of printed surfaces which are printed on a top surface of the waveguide sheet portion and adjust a brightness of light from the LEDs, in a stepwise manner from a position distant from the LEDs to a position adjacent to the LEDs, and a keypad provided on the printed surfaces.
Samsung Electronics Co., Ltd.
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Cheol-Hee Seok-Gyu Soo-Hyun
Kim Lee Lee