Patent ID: 9209139
Filing Date: 2015-12-08
Classification: G06F,G08B,H01L

Abstract:
1. A tamper indication device for protecting an electronic component having a bonding surface, comprising: a substrate having a first side and a second side opposite to each other; a first security screen disposed over the first side of said substrate and including a first pair of screen terminals and a first conductive track between the first pair of screen terminals; a second security screen including a second pair of screen terminals and a second conductive track between the second pair of screen terminals and overlaying the first conductive track on said first security screen; and a layer of adhesive over a side of said second security screen remote from said substrate and bonding said second security screen to the bonding surface of the electronic component, wherein the first conductive track includes a plurality of portions that are closely spaced from each other, the second conductive track includes a plurality of portions that are closely spaced from each other, and spaces between adjacent ones of the plurality of potions of the first conductive track of the first security screen overlap at least a part of the plurality of portions of the second conductive track of the second security screen.