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CAPACITIVE TOUCH SCREEN INCLUDING A FIRST SENSOR PATTERN FOR MUTUAL SENSING AND A SECOND SENSOR PATTERN FOR SELF SENSING
CAPACITIVE TOUCH SCREEN INCLUDING A FIRST SENSOR PATTERN FOR MUTUAL SENSING AND A SECOND SENSOR PATTERN FOR SELF SENSING
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机译:电容式触摸屏,包括用于互感的第一个传感器模式和用于自感测的第二个传感器模式
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摘要
A capacitive touch panel includes a first sensor pattern and second sensor pattern. The first sensor pattern supports mutual-capacitance detection and the second sensor pattern supports self-capacitance detection. The first sensor pattern includes row conductors and column conductors which intersect each other at mutual-capacitance sensing locations. The second sensor pattern includes island conductors. The island conductors are grouped in clusters of conductors, each cluster providing a self-capacitance sensing location. Control circuitry coupled to the first and second sensor patterns functions to make touch/hover position detections by sensing changes in capacitance at the mutual-capacitance and self-capacitance nodes. The row and column conductors include openings, and the island conductors are positioned in vertical alignment with corresponding openings in the conductors.
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