发明名称 |
Touch sensor panel using dummy ground conductors |
摘要 |
Methods and apparatus for correcting electrical noise coupling from a liquid crystal module to a plurality of sense elements disposed within a touch sensor panel, and for reducing errors in touch detection algorithms. Erroneous signal values detected by the sense elements may be corrected by utilizing a set of reference elements for detecting noise common to both the sense elements and the reference elements, and a correction module for effectively subtracting out the noise from the sensed values. Errors in touch detection algorithms may be reduced by providing a more uniform spacing between successive sense elements. In some embodiments, one or more dummy ground elements may be inserted between adjacent sense elements in order to reduce signal interference. |
申请公布号 |
US8614690(B2) |
申请公布日期 |
2013.12.24 |
申请号 |
US20080239622 |
申请日期 |
2008.09.26 |
申请人 |
GRUNTHANER MARTIN PAUL;HOTELLING STEVE PORTER;APPLE INC. |
发明人 |
GRUNTHANER MARTIN PAUL;HOTELLING STEVE PORTER |
分类号 |
G06F3/045;G01R27/26;G06F3/041;G06F3/044;G08C21/00 |
主分类号 |
G06F3/045 |
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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