发明授权
- 专利标题： Multi-layer solid state keyboard
- 专利标题（中）： 多层固态键盘
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申请号： US10829493申请日： 2004-04-22
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公开(公告)号： US07532131B2公开(公告)日： 2009-05-12
- 发明人: William David Schaefer , David W. Caldwell
- 申请人： William David Schaefer , David W. Caldwell
- 主分类号： H03K17/96
- IPC分类号： H03K17/96
摘要：
A keypad includes a substrate and one or more layers of decorative material on the substrate. Transparent and/or conventional conductive materials are disposed on the decorative material. Electrical circuit components are soldered to the conductive layers.
公开/授权文献
- US20050062620A1 Multi-layer solid state keyboard 公开/授权日：2005-03-24
信息查询
IPC分类:
