Curved surface electrode structure
A technology of electrode structure and curved surface, applied in circuits, electrical components, electrical digital data processing, etc., can solve the problem of difficulty in improving the sensitivity and accuracy of sensors, improve accuracy and sensitivity, reduce crosstalk, and reduce stress. cumulative effect
Active Publication Date: 2018-08-28
INTERFACE TECH CHENGDU CO LTD +2
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Problems solved by technology
The stress concentration phenomenon generated at the edge of the electrode structure of the sensor will generate a reverse-phase induced voltage signal to the adjacent electrodes, thus causing cross talk (cross talk), making it difficult to improve the sensitivity and accuracy of the sensor
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[0042] Several embodiments of the present invention will be disclosed in the following figures. For the sake of clarity, many practical details will be described together in the following description. It should be understood, however, that these practical details should not be used to limit the invention. That is, in some embodiments of the present invention, these practical details are unnecessary. In addition, for the sake of simplifying the drawings, some well-known structures and components will be shown in a simple and schematic manner in the drawings. Also, the thicknesses of layers and regions in the drawings may be exaggerated for clarity, and the same reference numerals denote the same elements in the description of the drawings.
[0043] figure 1 It is a cross-sectional view of a curved electrode structure 100 in an embodiment of the present invention. figure 2 for figure 1 A partial perspective view of the first protective layer 130 and the first conductive lay...
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A curved surface electrode structure comprises a piezoelectric material layer, first conductive layers, first protective layers and second conductive layers. The piezoelectric material layer is located between the second conductive layers and the first conductive layers. The first conductive layers are located on the piezoelectric material layer, the first conductive layers and the piezoelectric material layer have first contact surfaces, the two first contact surfaces are in contact to each other and are in a circular arc shape. The first protective layers are located on the first conductivelayers, the first protective layers and the first conductive layers have second contact surfaces, and the two contact surfaces are in contact to each other and are in a circular arc shape. When the curved surface electrode structure is forced, the curved surface electrode structure can reduce the stress accumulation of the piezoelectric materials in the stress process to avoid unpredictable deformation caused by stress accumulation and reduce the crosstalk phenomenon. The curved surface electrode structure can improve the accuracy and the sensitivity of pressure sensing.
Description
technical field [0001] The invention relates to a curved surface electrode structure. Background technique [0002] With the emergence of related products with touch sensing functions, the corresponding software applications are becoming more and more diverse. If the related tactile sensor architecture is designed to be soft and flexible, it will be further applied to human physiological monitoring equipment. [0003] Piezoelectric material sensors are currently widely used product designs. When mechanical stress acts on the piezoelectric material to generate strain, the material will produce a change in charge, which can sense position and pressure. The stress concentration phenomenon generated at the edge of the electrode structure of the sensor will generate an induced voltage signal of opposite phase to the adjacent electrodes, thus causing cross talk (cross talk), making it difficult to improve the sensitivity and accuracy of the sensor. SUMMARY OF THE INVENTION [...
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Patent Timeline
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CPCG01L1/16H10N30/87H10N30/883H10N30/302G06F2203/04105G06F3/0414H10N30/877H10N30/802H10N30/706
Inventor林柏青
OwnerINTERFACE TECH CHENGDU CO LTD