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Single-touch type or multi-touch type touch screen or touch pad having a pressure sensor array, and method for manufacturing a pressure sensor
Single-touch type or multi-touch type touch screen or touch pad having a pressure sensor array, and method for manufacturing a pressure sensor
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机译:具有压力传感器阵列的单点触摸型或多点触摸型触摸屏或触摸板以及压力传感器的制造方法
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摘要
A multitouch-capable touchscreen is realized in that a large number of pressure sensors are attached under a flexible surface and thus both the pressure distribution and also the deformation of the surface is measured. Local pressure maxima occur due to the flexibility of the surface material with associated deformation on contact. As several local pressure maxima can exist, it is thus also possible to identify a plurality of contacts simultaneously. It is possible from the strength of pressure and pressure distribution to determine the force that is used for pressing such that this information can also be used in the user interface. Such sensors can be produced very efficiently and inexpensively by printing an ink that changes its resistance under pressure onto PCB tracks designed as sensor surfaces. The PCB tracks and the sensor surfaces can also be printed out using an ink with as low a resistance as possible.
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