Patent ID: 6049055
Filing Date: 2000-04-11
Classification: G06K,H05K

Abstract:
A method for producing a chip module for a smart card having contacts for communication with external appliances, comprising the steps of:forming the chip module by applying at least first and second metal layers on a substrate;applying a laser beam to the contacts for fusing two of the at least first and second metal layers wherein the fused two of the at least first and second form an alloy, the alloy forming a pattern of visual information on the contacts of the chip module, the pattern of visual information including at least one segment that extends continuously from a first contact to a second contact across an insulating, metal-free interspace therebetween; andminimizing the application of the laser beam to the insulating, metal-free interspace between the first contact and the second contact to prevent damage thereto when the laser beam is guided over the interspace between the first contact and the second contact while forming the at least one segment of the pattern that extends continuously from the first contact to the second contact.