Tamper-respondent assemblies with bond protection
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
B32B-041/00
H05K-001/02
H05K-001/18
G06F-021/87
H05K-005/02
출원번호
US-0941860
(2015-11-16)
등록번호
US-9913362
(2018-03-06)
발명자
/ 주소
Brodsky, William L.
Busby, James A.
Dreiss, Zachary T.
Fisher, Michael J.
Long, David C.
Santiago-Fernandez, William
Weiss, Thomas
출원인 / 주소
INTERNATIONAL BUSINESS MACHINES CORPORATION
대리인 / 주소
Maranzano, Teddi
인용정보
피인용 횟수 :
3인용 특허 :
122
초록▼
Methods of fabricating tamper-respondent assemblies with bond protection are provided which include at least one tamper-respondent sensor having unexposed circuit lines forming, at least in part, one or more tamper-detect network(s), and the tamper-respondent sensor having at least one external bond
Methods of fabricating tamper-respondent assemblies with bond protection are provided which include at least one tamper-respondent sensor having unexposed circuit lines forming, at least in part, one or more tamper-detect network(s), and the tamper-respondent sensor having at least one external bond region. The tamper-respondent assembly further includes at least one conductive trace and an adhesive. The conductive trace(s) forms, at least in part, the one or more tamper-detect network(s), and is exposed, at least in part, on the tamper-respondent sensor(s) within the external bond region(s). The adhesive contacts the conductive trace(s) within the external bond region(s) of the tamper-respondent sensor(s), and the adhesive, in part, facilitates securing the at least one tamper-respondent sensor within the tamper-respondent assembly. In enhanced embodiments, the conductive trace(s) is a chemically compromisable conductor susceptible to damage during a chemical attack on the adhesive within the external bond region(s).
대표청구항▼
1. A method of fabricating a tamper-respondent assembly, the method comprising: providing at least one tamper-respondent sensor, the at least one tamper-respondent sensor comprising one or more tamper-detect networks, and the at least one tamper-respondent sensor including at least one external bond
1. A method of fabricating a tamper-respondent assembly, the method comprising: providing at least one tamper-respondent sensor, the at least one tamper-respondent sensor comprising one or more tamper-detect networks, and the at least one tamper-respondent sensor including at least one external bond region, wherein providing the at least one tamper-respondent sensor comprises providing unexposed circuit lines, the unexposed circuit lines being formed of a first conductive material;providing at least one conductive trace forming, at least in part, at least one tamper-detect network of the one or more tamper-detect networks, the at least one conductive trace being exposed, at least in part, on the at least one tamper-respondent sensor within the at least one external bond region, wherein the at least one conductive trace is formed of a second conductive material, where the first conductive material and second conductive material comprise, at least in part, different materials; andproviding an adhesive contacting the at least one conductive trace within the at least one external bond region of the at least one tamper-respondent sensor, the adhesive facilitating securing the at least one tamper-respondent sensor within the tamper-respondent assembly. 2. The method of claim 1, wherein the adhesive bonds to the at least one conductive trace with an equal or greater bond strength than a bond strength of the at least one conductive trace to the at least one tamper-respondent sensor where exposed within the at least one external bond region. 3. The method of claim 1, wherein providing the at least one conductive trace comprises providing a chemically dissolvable conductor susceptible to damage during a chemical attack on the adhesive within the at least one external bond region of the tamper-respondent sensor, the damage facilitating detection of the chemical attack by the tamper-respondent assembly. 4. The method of claim 3, wherein the chemically dissolvable conductor comprises, at least in part, at least one of carbon or silver. 5. The method of claim 1, wherein the at least one conductive trace is partially unexposed, being disposed, at least in part, within the at least one tamper-respondent sensor. 6. The method of claim 1, wherein the at least one external bond region of the at least one tamper-respondent sensor comprises at least one overlap region of the at least one tamper-respondent sensor. 7. The method of claim 1, wherein fabricating the tamper-respondent assembly further comprises providing a rigid surface wherein the adhesive, at least in part, bonds the at least one external bond region of the at least one tamper-respondent sensor, with the exposed at least one conductive trace, to the rigid surface. 8. The method of claim 7, wherein fabricating the tamper-respondent assembly further comprises providing an electronic enclosure to surround, at least in part, at least one electronic component to be protected, the rigid surface being a surface of the electronic enclosure. 9. A method of fabricating a tamper-respondent assembly, the method comprising: providing a first tamper-respondent sensor comprising at least one first tamper-detect network;providing a second tamper-respondent sensor comprising at least one second tamper-detect network, the first tamper-respondent sensor and the second tamper-respondent sensor being discrete, tamper-respondent sensors that overlap, at least in part, and facilitate defining a secure volume about at least one electronic component to be protected;providing at least one conductive trace, the at least one conductive trace being exposed, at least in part, on the first tamper-respondent sensor within the overlap, and forming, at least in part, a tamper-detect network of the at least one first tamper-detect network of the first tamper-respondent sensor; andproviding an adhesive securing the first tamper-respondent sensor and the second tamper-respondent sensor together within the overlap, the adhesive being in contact with the at least one conductive trace. 10. A method of fabricating a tamper-respondent assembly, the method comprising: providing at least one tamper-respondent sensor, the at least one tamper-respondent sensor comprising one or more tamper-detect networks, and the at least one tamper-respondent sensor including at least one external bond region;providing at least one conductive trace forming, at least in part, at least one tamper-detect network of the one or more tamper-detect networks, the at least one conductive trace being exposed, at least in part, on the at least one tamper-respondent sensor within the at least one external bond region;providing an adhesive contacting the at least one conductive trace within the at least one external bond region of the at least one tamper-respondent sensor, the adhesive facilitating securing the at least one tamper-respondent sensor within the tamper-respondent assembly;providing an electronic enclosure, the electronic enclosure to enclose, at least in part, at least one electronic component to be protected, and the at least one tamper-respondent sensor being adhesively secured to at least one surface of the electronic enclosure, wherein the at least one surface of the electronic enclosure comprises at least one inner surface of the electronic enclosure;providing a multilayer circuit board, the at least one electronic component being associated with the multilayer circuit board;providing an embedded tamper-respondent sensor within the multilayer circuit board; andsealing the electronic enclosure to the multilayer circuit board, wherein the at least one tamper-respondent sensor and the embedded tamper-respondent sensor within the multilayer circuit board facilitate defining a secure volume about the at least one electronic component.
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