发明名称 |
Frontally shielded capacitive touch sensor system |
摘要 |
A frontally shielded capacitive touch sensor system includes a capacitive touch sensor having a touch sensitive surface; a front shield mounted in front of the touch sensor and extending peripherally about the surface surrounding an exposed accessible area of the touch sensitive surface; a device for providing a first voltage on the touch sensor and detecting a change in capacitance representative of a touch to the touch sensor and for providing a second voltage on the front shield for controlling the capacitance between the touch sensor and the front shield and shielding the system from stray capacitance occurring at the front shield.
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申请公布号 |
US5457289(A) |
申请公布日期 |
1995.10.10 |
申请号 |
US19940213684 |
申请日期 |
1994.03.16 |
申请人 |
MICROTOUCH SYSTEMS, INC. |
发明人 |
HUANG, HUNG-CHIH;STEIN, ROBERT A. |
分类号 |
G06F3/033;G06F3/044;(IPC1-7):G08C21/00;G09G3/02 |
主分类号 |
G06F3/033 |
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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