发明名称 |
Membrane keyboard assembly |
摘要 |
The membrane keyboard assembly comprises upper and lower membrane keyboards, a spacer interposed therebetween and a common flexible base including two half portions associated with the upper and lower membrane keyboards. The flexible base has silver paint contact areas and connection lines printed thereon and the silver paint connection lines have gaps at spaced points along their length. Resistive layers are applied on the contact areas and connection lines including the gaps therein so that suppression resistances in series connected across the connection lines are formed. The resistance value of the suppression resistances can be varied by suitably selecting the length and width of the connection lines.
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申请公布号 |
US4440990(A) |
申请公布日期 |
1984.04.03 |
申请号 |
US19820379709 |
申请日期 |
1982.05.19 |
申请人 |
SMK ELECTRONICS CORPORATION, USA |
发明人 |
NOZAKI, SATORU |
分类号 |
H01H13/702;H01H13/785;(IPC1-7):H01H9/00 |
主分类号 |
H01H13/702 |
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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