Patent · US Expired

Method for welding by means of laser light

US4697061A · kind A · utility

31Cited by

2References

5Claims

0Family size

Assignee

Siemens Aktiengesellschaft · DE

Inventors

Lothar Spaeter · Annweiler am Trifels, DE
Herbert Prussas · Pfaffenhofen an der Ilm, DE

Key dates

Filing date	Aug 29, 1986
Grant date	Sep 29, 1987
Priority date	—
Expiry date	Aug 29, 2006

Classification

Technology area (CPC H)Electricity
CPC primaryH01L2924/12042
WIPO fieldSemiconductors
WIPO sectorElectrical engineering

Abstract

A method for laser-light welding of a metallic base layer to a thin, metallic covering lying thereon, whereby the covering which is highly reflective for the laser light is covered with a metal skin which is less highly reflective for the laser light, namely with a metal skin which noticeably absorbs the laser light. In case both the covering as well as the base layer are wettable with solder metal, the covering highly reflective for the laser light is first covered with a metal skin composed of a solder metal, whereupon said covering is welded to the base layer by means of the laser light.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.