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 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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