发明名称 KEYPAD APPARATUS FOR PORTABLE COMMUNICATION DEVICE
摘要 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.
申请公布号 US2012085632(A1) 申请公布日期 2012.04.12
申请号 US201113222040 申请日期 2011.08.31
申请人 SAMSUNG ELECTRONICS CO., LTD. 发明人 LEE SOO-HYUN;LEE SEOK-GYU;KIM CHEOL-HEE
分类号 H01H13/76;H01H9/00 主分类号 H01H13/76
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