公开(公告)号：US09763321B2

公开(公告)日：2017-09-12

申请号：US14643661

申请日：2015-03-10

Applicant: Johnson Electric S.A.

Inventor： Alan Roger Morey ,  Martin Wallace Edmonds ,  Gregory Tobias Knight ,  Alex James Cowcher ,  Paul Alfred Hilson ,  Steven Mark Smith

IPC: H05K7/00 ,  H05K1/02 ,  H05K1/18

CPC classification number: H05K1/0275 ,  H05K1/181 ,  H05K2201/09263

Abstract: A multi-layered electronic system has a support substrate including at least a primary conductive track; a security layer including at least a conductive security track; an electrically-conductive engagement element in electrical communication with the primary conductive tack, and to which the security layer is mounted so that the conductive security track is in permanent electrical communication with the primary conductive track; and a flexible cover layer which overlies the security layer and which is directly or indirectly secured to the support substrate. The electrical connection between the security layer, conductive engagement element and primary conductive track is interrupted when the conductive security track is broken.