Pressure sensing method and system

A sensing method and sensing system technology, applied in the direction of measuring force, measuring devices, instruments, etc., can solve problems such as pressure sensing signal distortion, achieve the effects of improving yield, reducing noise signal, and saving materials

Active Publication Date: 2016-06-01
TPK TOUCH SOLUTIONS (XIAMEN) INC
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  • Abstract
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  • Claims
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Problems solved by technology

[0003] In order to overcome the current problem of pressure sensing signal distortion, the present invention provides a pressure sensing method and system that can accurately obtain the maximum deformation resistance value

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Embodiment Construction

[0026] In order to make the purpose, technical solutions and advantages of the present invention more clear, the present invention will be further described in detail below in conjunction with the accompanying drawings and implementation examples. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0027] In the present invention, the material of the pressure sensing layer is a transparent conductive oxide, such as indium tin oxide (Indium Tin Oxide, ITO) and other similar metal oxides. As the temperature rises, the resistance increases, and it is stretched and deformed by the pressing force. Afterwards, the resistance value decreases. The pressure sensing layer includes pressure sensing electrodes, and one pressure sensing electrode includes a plurality of pressure sensing electrode blocks.

[0028] There are generally differences in initial resistance values ​​between diff...

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Abstract

The invention provides a pressure sensing method and system. The pressure sensing method comprises the steps of reading stored resistance values Rn and calculating difference values delta Rn of resistance values at previous and next moments to obtain at least one delta Rn / Rn-1; and according to at least one delta Rn / Rn-1 or the sum of multiple delta Rn / Rn-1, performing matching with at least one preset value database to obtain pressure values Fn corresponding to at least one delta Rn / Rn-1 or the sum of the multiple delta Rn / Rn-1. Therefore, the maximum of a deformation resistance value can be accurately obtained, variable factors and noise signals generated by adopting an existing value-taking and operation method are effectively reduced, and a pressure sensing signal can be effectively and accurately detected and processed without the need for specially limiting the material or structure of a pressure sensing electrode.

Description

【Technical field】 [0001] The present invention relates to the field of pressure sensing, in particular to a pressure sensing method and system thereof. 【Background technique】 [0002] With the continuous updating of the touch panel technology in recent years, the touch panel has become an essential component of the display device. And the touch panel with pressure sensing function is getting more and more attention. Resistive pressure sensing electrodes are usually made of piezoresistive materials as pressure sensing electrodes. By detecting the change in resistance value of the pressure-sensitive electrode before and after being pressed, the pressing force can be judged according to the corresponding relationship between the change in resistance value and the pressing force. . However, the operating environment, the structure of the pressure-sensitive electrode itself, and the characteristics of the material of the pressure-sensitive electrode will also affect the variati...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F3/041G06F3/045
CPCG06F3/0414G06F3/045G06F3/0418G01L1/2262G01L1/2281
Inventor 纪贺勋魏财魁叶财金郑怀彬
Owner TPK TOUCH SOLUTIONS (XIAMEN) INC
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