Surface Electrode Structure
A technology of electrode structure and curved surface, applied in circuits, electrical components, electrical digital data processing, etc., can solve the problems of difficulty in improving the sensitivity and accuracy of sensors, and achieve the goal of improving accuracy and sensitivity, reducing stress accumulation, and avoiding deformation Effect
Active Publication Date: 2020-06-23
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 includes a piezoelectric material layer, a first conductive layer, a first protective layer and a second conductive layer. The piezoelectric material layer is located between the second conductive layer and the first conductive layer. The first conductive layer is located on the piezoelectric material layer, and each first conductive layer has a first contact surface with the piezoelectric material layer, and the two first contact surfaces are in contact with each other and are both arc-shaped. The first protective layer is located on the first conductive layer, each first protective layer has a second contact surface with the first conductive layer, and the two second contact surfaces are in contact with each other and are arc-shaped. Therefore, when the curved surface electrode structure is stressed, the stress accumulation of the piezoelectric material during the stress process can be reduced, unpredictable deformation caused by stress accumulation can be avoided, and crosstalk can be reduced. Therefore, the curved electrode structure of the present invention can improve the precision and 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. Contents of the invention ...
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IPC IPC(8): G01L1/16H10N30/00H10N30/30H10N30/80H10N30/87
CPCG01L1/16H10N30/87H10N30/883H10N30/302G06F2203/04105G06F3/0414H10N30/877H10N30/802H10N30/706
Inventor林柏青
OwnerINTERFACE TECH CHENGDU CO LTD