TWM597500U - Resistor element - Google Patents

Abstract

The present creation provides a structure of resistor element, which comprises a protective layer around electrodes to elongate the path of corrosion when gaseous water or sulfur leaking in. Therefore, the protective layer structure can span the life of the resistor element.

Description

Resistance element

This creation is about a resistance element, especially a resistance element with a protective layer structure around the electrode to slow the corrosion of water vapor or sulfur gas.

Generally, the resistance element covers a conductive layer on the silver electrode to protect the silver electrode. However, moisture, sulfur, etc. easily invade from the gap between the conductor layer and the substrate. As shown in FIG. 1, it reacts with the silver electrode to form insulated silver sulfide (Ag ₂ S), and the resistance value may increase or fail.

This creation provides a resistive element, a protective layer is placed around the electrode, and then the conductive layer is covered on the protective layer and the electrode to extend the invasion path of water or sulfur gas contacting the electrode, which can avoid or slow down the corrosion and extend the resistive element Service life.

The following will detail each embodiment of the creation, and cooperate with the drawings as an example, so that the reader has a more complete understanding of the creation. These detailed descriptions can be widely implemented in other embodiments, and any easy replacement, modification, and equivalent change of any of the described embodiments should be included in the scope of this creation, and the scope of this creation should be defined by the scope of the patent application. It is important to note that the drawings are for illustrative purposes only, and do not represent the actual size or number of components. Some details may not be completely drawn for simplicity of the drawings.

Please refer to FIG. 2, which is a three-dimensional schematic diagram of a resistor element according to an embodiment of the present invention. In this embodiment, a protective layer 12 is provided around the electrode 11 of the resistance element. The substrate 10 of the original resistance element is provided with electrodes 11 at both ends, and a protective layer 12 is provided around the electrodes 11 on the substrate 10.

Next, referring to Fig. 3, it is a cross-sectional view taken along line A-A' of the embodiment of Fig. 2. In this embodiment, a protective layer 12 is provided around the two electrodes 11 at a certain distance H. The protective layer 12, the second electrode 11, and a part of the resistance layer are covered with a conductor layer 13.

Among them, the sulfur/water gas path 14 shown in the figure is longer than that of the conventional resistance element, so the water gas or sulfur gas can be delayed from contacting the electrode 11. Understandably, the protective layer 12 may be a plurality of independent strip-shaped or zigzag-shaped structures, and is arranged outward from the electrode 11 as a center, further adding a sulfur/water vapor path 14 (not shown), which is adjusted according to actual needs. In other embodiments, the electrode 11 may extend to the lower surface of the substrate 10, and at the same time, the protective layer 12 also extends along the electrode 11 to the lower surface of the substrate 10 (not shown).

This creation uses a protective layer to surround the electrode. The structure of the protective layer can block or delay the contact of sulfur or water vapor from the gap between the conductor layer and the substrate and the electrode, thereby extending the life of the resistive element.

10: substrate 11: electrode 12: protective layer 13: Conductor layer 14: sulfur/water vapor path 15: Resistance layer H: pitch A-A’: Sectional tangent

FIG. 1 is a side cross-sectional view of a conventional resistance element.

Fig. 2 is a three-dimensional schematic diagram of the resistance element created in this paper.

Fig. 3 is a cross-sectional view taken along line A-A' of Fig. 2.

10: substrate

11: electrode

12: protective layer

13: Conductor layer

14: sulfur/water vapor path

H: pitch

Claims (3)

A resistive element, including: A substrate A resistance layer, disposed on the upper surface of the substrate; One electrode layer, which is provided at both ends of the substrate, connected to the resistance layer to form two electrodes; A protective layer disposed around the electrode layer at a distance; and A conductor layer substantially covers the protective layer and the electrode layer. The resistance element according to claim 1, wherein the protective layer is a plurality of independent strip-shaped or zigzag-shaped structures. The resistance element according to claim 1, wherein the electrode layer extends to the lower surface of the substrate, and the protective layer also extends to the lower surface of the substrate along with the electrode layer.

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