MUTUAL CAPACITANCE TOUCH SCREEN TO CAUSE DISPERSED COUPLING OF ELECTRODES
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United States of America Patent
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Issued Date -
Mar 28, 2013
app pub date -
Sep 18, 2012
filing date -
Sep 21, 2011
priority date (Note) -
Abandoned
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Abstract
A mutual capacitance touch screen to cause dispersed coupling of electrodes includes driving electrode chains, sensing electrode chains and a data processing module. The central line of any driving electrode chain and the central line of any sensing electrode chain are mutually vertical. The driving electrode chains comprise at least two driving electrode plates. Two adjacent driving electrode plates are electrically connected by means of driving electrode connecting strips made of the conductive material. Thus, two clearances are formed between two adjacent driving electrode plates. Bar-shaped concave clearances which are recessed towards the driving electrode plates are also arranged on the driving electrode plates. The sensing electrode chains are arranged to fill the gaps and the concave clearances among the driving electrode chains in the touch screen. In the utility model, the coupling electric field is dispersed. Thus, the long range power lines in the coupling electric field are effectively reduced, the sensitivity of the touch screen in the hanging state is optimized, and the waterproof property and the anti-interference capability of the touch screen are improved. Moreover, the effective capacitivity of the mutual capacitance touch screen is also improved.
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