发明名称 |
Touch sensing device |
摘要 |
A transparent finger touch sensing device having a sensing circuit including a resonator for sensing a touch an oscillator for supplying an AC signal to the resonator, a buffer circuit for isolating an output of the oscillator from each selected touch electrodes and for supplying the oscillator output to the remaining non-selected touch electrodes when the sensing circuit is sequentially connected to the touch sensing electrodes, is disclosed. Thereby, the selected touch electrodes and non-selected touch electrodes are maintained at a voltage having the same phase and the same level and the inter-electrode impedance is substantially negligible.
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申请公布号 |
US4556871(A) |
申请公布日期 |
1985.12.03 |
申请号 |
US19830505979 |
申请日期 |
1983.06.20 |
申请人 |
FUJITSU LIMITED |
发明人 |
YOSHIKAWA, KAZUO;YAMAGUCHI, HISASHI;ASANO, TORU |
分类号 |
G01B7/00;G06F3/041;G06K11/06;H03K17/96;(IPC1-7):G06F3/02 |
主分类号 |
G01B7/00 |
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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