Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Electrical several-layer element and manufacturing method thereof

An electrical and protective layer technology, applied in the field of multi-layer electrical components, can solve the problems that affect the performance of PTC ceramics, silver and palladium are expensive, easy to penetrate into ceramics, etc., and achieve the effects of large mechanical offset, lower basic resistance, and high capacitance

Inactive Publication Date: 2013-02-13
EPCOS AG
View PDF5 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The known PTC elements also have the disadvantage that aluminum tends to penetrate into the ceramic at high sintering temperatures of over 1000° C. and will affect the desired properties of the PTC ceramic
[0006] The disadvantage of these known elements is that silver and palladium are relatively expensive

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Electrical several-layer element and manufacturing method thereof
  • Electrical several-layer element and manufacturing method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0048] Figure 1 shows a component in a perspective view. It is made by sintering a stack of overlapping green and electrode layers. For this purpose, an electrode paste is applied to the areas of a green film surface intended for electrodes. Suitable methods for this are a series of, in particular thick-coating methods and preferably printing, for example by means of screen printing. At least at the edges of the green film or only at the corners of the green film, there remains a surface area which is not covered by the electrode paste. It is also possible to coat the electrodes not in planar layers but to structure them, if necessary in an intermittent pattern.

[0049] The screen printing paste has, for example, metal particles comprising metallic tungsten or tungsten compounds for producing the desired electrical conductivity and optionally also ceramic particles which can be sintered and for adapting the fading properties of the electrode paste to the fading properties o...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention relates to a multilayer electrical component having a multilayer body (1) with overlapping dielectric layers (2) containing a ceramic material and between the dielectric layers electrically conductive electrode layers (3), wherein at least one electrode layer (3) contains a matrix (4), which is covered by a protective layer (3), the matrix (4) containing a metal, the protective layer (4) 5) Contains a protective material that retards oxidation of the metal. The invention also relates to a method of manufacturing the element, in which the sintering process can be carried out at high temperatures. By means of the invention presented, it is possible to produce ceramic multilayer components with cost-effective electrodes and simplified manufacturing processes.

Description

technical field [0001] The invention relates to a multilayer electrical component, which has a multilayer body with dielectric layers arranged one above the other and comprising a ceramic material, and electrically conductive electrode layers located between them. The invention also relates to a method of manufacturing the multilayer component. Background technique [0002] A component of the aforementioned type is known from document DE 19719174 A1, in which the electrical resistance of the dielectric layer has a positive temperature coefficient and the electrode layers are made of aluminum. In order to manufacture such a multilayer positive temperature coefficient thermistor, it is necessary to use a base metal as the electrode layer, because only such a metal can form a layer on its surface that is necessary for the function of the positive temperature coefficient (PTC) element. Oxide layer, which is necessary for the breakdown of the barrier layer between the electrode ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): H01G4/00H01G4/30H01G4/005H01G4/008H01G4/12H10N30/50H10N30/87
CPCH01G4/0085H01G4/30Y10T428/1266Y10T428/24926H10N30/871H10N30/877H10N30/053
Inventor L·科斯滕
Owner EPCOS AG
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com