Sinter paste with coated silver oxide on noble and non-noble surfaces that are difficult to sinter

a technology of silver oxide and noble and non-noble surfaces, which is applied in the direction of synthetic resin layered products, natural mineral layered products, solid-state devices, etc., can solve the problems of difficult contact between components, difficulty in connecting components such as leds or very thin silicon chips, and disadvantageous adhesive technology

Inactive Publication Date: 2016-03-03
HERAEUS PRECIOUS METALS GMBH & CO KG
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In power electronics, the connecting of components, such as LEDs or very thin silicon chips, comprising high pressure and temperature resistance, is particularly challenging.
However, adhesive technology is disadvantageous in that it produces contact sites between the components that comprise only insufficient heat conductivity and/or electrical conductivity.
However, practical application has shown that the sinterability of customary pastes or mixtures is insufficient, in particular at low process pressures, despite the use of various sintering aids.
In particular, poor bondi

Method used

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  • Sinter paste with coated silver oxide on noble and non-noble surfaces that are difficult to sinter
  • Sinter paste with coated silver oxide on noble and non-noble surfaces that are difficult to sinter
  • Sinter paste with coated silver oxide on noble and non-noble surfaces that are difficult to sinter

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Production of the Mixtures

[0147]Initially, the mixtures according to the present invention were produced by, mixing the ingredients at the quantitative ratios given in Table 1.

[0148]The coating of the coated silver oxide particles accounted for 0.8% by weight of the total weight of the coated silver oxide particles.

[0149]A mixture of stearic acid and lauric acid at a mass ratio of 75 to 25 (stearic acid lauric acid) was used as the coating.

[0150]Silver oxide particles having a primary particle size of 1 μm, as determined by means of scanning electron microscopy, were used as metal oxide particles. α-Terpineol was used as a dispersing agent.

TABLE 1Example 1Example 2Reference Exampleα-Terpineol15.7220.46617.447Ethylcellulose N1000.560.7760.516Silver oxide-coated183.72——Silver oxide-coated2—78.758—Not silver oxide-——82.037coated3Total1001001001The coating was done by jet milling. The agglomerates of the coated silver oxide particles had an average size of 3 μm as determined by means of...

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Abstract

A mixture contains metal oxide particles that are coated with an organic compound. The mixture may be used to connect components and/or to produce a module. A method for producing the mixture is also provided.

Description

CROSS-REFERENCE TO RELATED APPLICATIONS[0001]This application is, a Section 371 of International Application No. PCT / EP2014 / 053185, filed Feb. 19, 2014, which was published in the German language on Oct. 23, 2014 under International Publication No. WO 2014 / 170050 A1, and the disclosure of which is incorporated herein by reference.BACKGROUND OF THE INVENTION[0002]The present invention relates to a mixture containing metal oxide particles that are coated with an organic compound, and a method for connecting components, in which the mixture is used. The present invention also relates to a module that is produced using the mixture and to a method for producing the mixture described above.[0003]In power electronics, the connecting of components, such as LEDs or very thin silicon chips, comprising high pressure and temperature resistance, is particularly challenging. For this reason, the pressure- and temperature-resistant components are often connected to each other by means of gluing. H...

Claims

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Application Information

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IPC IPC(8): B23K35/36B23K35/02H05K1/11
CPCC01G55/004C01G3/02H01L2924/12044H01L2924/1305H05K1/11B23K35/3601B23K35/025C01G5/00C09C3/08H01L24/29H01L24/83C01P2004/02C01P2004/04C01P2004/20C01P2004/61C01P2004/62C01P2006/22H01L2224/8384H01L2924/13055H01L2924/00
Inventor SCHAFER, MICHAELSCHMITT, WOLFGANGDUCH, SUSANNE, KLAUDIA
Owner HERAEUS PRECIOUS METALS GMBH & CO KG
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