TW471144B - Method to prevent intrusions into electronic circuitry - Google Patents

Method to prevent intrusions into electronic circuitry Download PDF

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Publication number
TW471144B
TW471144B TW084114065A TW84114065A TW471144B TW 471144 B TW471144 B TW 471144B TW 084114065 A TW084114065 A TW 084114065A TW 84114065 A TW84114065 A TW 84114065A TW 471144 B TW471144 B TW 471144B
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circuit
integrated circuit
conductive
patent application
scope
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TW084114065A
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English (en)
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Harry A Kuhn
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Intel Corp
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    • HELECTRICITY
    • H05ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05KPRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K1/00Printed circuits
    • H05K1/02Details
    • H05K1/14Structural association of two or more printed circuits
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01LSEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L23/00Details of semiconductor or other solid state devices
    • H01L23/57Protection from inspection, reverse engineering or tampering
    • H01L23/576Protection from inspection, reverse engineering or tampering using active circuits
    • GPHYSICS
    • G06COMPUTING; CALCULATING OR COUNTING
    • G06KGRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
    • G06K19/00Record carriers for use with machines and with at least a part designed to carry digital markings
    • G06K19/06Record carriers for use with machines and with at least a part designed to carry digital markings characterised by the kind of the digital marking, e.g. shape, nature, code
    • G06K19/067Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components
    • G06K19/07Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components with integrated circuit chips
    • G06K19/073Special arrangements for circuits, e.g. for protecting identification code in memory
    • G06K19/07309Means for preventing undesired reading or writing from or onto record carriers
    • G06K19/07372Means for preventing undesired reading or writing from or onto record carriers by detecting tampering with the circuit
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01LSEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L25/00Assemblies consisting of a plurality of individual semiconductor or other solid state devices ; Multistep manufacturing processes thereof
    • H01L25/18Assemblies consisting of a plurality of individual semiconductor or other solid state devices ; Multistep manufacturing processes thereof the devices being of types provided for in two or more different subgroups of the same main group of groups H01L27/00 - H01L33/00, or in a single subclass of H10K, H10N
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01LSEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L2924/00Indexing scheme for arrangements or methods for connecting or disconnecting semiconductor or solid-state bodies as covered by H01L24/00
    • H01L2924/0001Technical content checked by a classifier
    • H01L2924/0002Not covered by any one of groups H01L24/00, H01L24/00 and H01L2224/00
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00Metal working
    • Y10T29/49Method of mechanical manufacture
    • Y10T29/49002Electrical device making
    • Y10T29/49117Conductor or circuit manufacturing
    • Y10T29/49124On flat or curved insulated base, e.g., printed circuit, etc.
    • Y10T29/49126Assembling bases
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00Metal working
    • Y10T29/49Method of mechanical manufacture
    • Y10T29/49002Electrical device making
    • Y10T29/49117Conductor or circuit manufacturing
    • Y10T29/49124On flat or curved insulated base, e.g., printed circuit, etc.
    • Y10T29/49128Assembling formed circuit to base
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00Metal working
    • Y10T29/49Method of mechanical manufacture
    • Y10T29/49002Electrical device making
    • Y10T29/49117Conductor or circuit manufacturing
    • Y10T29/49124On flat or curved insulated base, e.g., printed circuit, etc.
    • Y10T29/4913Assembling to base an electrical component, e.g., capacitor, etc.
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00Metal working
    • Y10T29/49Method of mechanical manufacture
    • Y10T29/49002Electrical device making
    • Y10T29/49117Conductor or circuit manufacturing
    • Y10T29/49169Assembling electrical component directly to terminal or elongated conductor
    • Y10T29/49171Assembling electrical component directly to terminal or elongated conductor with encapsulating

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  • Engineering & Computer Science (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Computer Hardware Design (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Condensed Matter Physics & Semiconductors (AREA)
  • Power Engineering (AREA)
  • Computer Security & Cryptography (AREA)
  • General Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Storage Device Security (AREA)
  • Semiconductor Integrated Circuits (AREA)

Description

471144 第84114〇65號專利命請案 中文說明書修正頁(89年2月)
發明説明( 經濟部中央樣隼局員工消費合作社印製 發明之背景. 1 .發明領域 本發明揭示一種積體電路封裝,其 共防止積體電路之詢問 (interrogation)。 2 .相關技術說明 積體電路通常容納在焊接到一印刷電路板之塑膠戋陶瓷 封裝内。積體電路可包括諸如晶片製造商專有之顯微碼的 資訊。此資訊之載人對於要複製該電路之競爭者很有價 值。此外,積體電路可包含最終使用者專有資訊,諸如信 用及銀行資訊。 積體電路上之資料可以藉由顯露電路晶粒至探針來取 得。晶粒可僅去除封裝蓋或姓去封裝材料來顯露於探針。 最好提供—種積體電路封裝,其防止以外部探針來詢問積 體電路《 ' 發明之概诚 本發明揭示—種積體電路封裝,其有覆蓋積體電路之可 撓性電路。該可撓性電路包含—導電線路,其防止探針近 接積體電路。如果可撓性電路導電备路«,則可撓性電 路i導%線路可附著到電力線路、同步線路、記憶抹除線 路或任何其他線路其將纟能㊉或防止近接到積體 路。 Μ圖之簡單說明 \ 本發明之目的及優點對擅於本技術者在研讀下文詳細說 明及其附圖後,將變得更顯而易見,其中: 圖1是本發明積體電路之示意圖; --------G—裝------訂-----U線 (請先閱讀背面之注意事項再填寫本頁) -4-
經濟部中央標準局員工消費合作社印製 471144 A7 __________B7 五、發明説明(2 ) 圖2是積體電路封裝之立體分解圖· 圖3是可撓性電路包在積體電路周圍之放大圖: 圖4是積體電路及可撓性電路附著到印刷電路板之示意 圖: 圖5’表示封裝内之積體電路、可挽性電路及印刷電路板 的橫剖面圖: — 圖6疋可撓性電路線作用爲積體電路之保險絲的電路圖 :及 固a e疋可k性私路線連接到積體電路之同步線路、記 憶體抹除線路及一感測線路的電路圖。 發明之詳細説見 麥照圖1及2附圖之參考號碼.,其明碓表示本發明之積體 電路組件1〇。组件1〇包括—可撓性電路12,其包圍在基 體1 5上所安裝之積體電路晶片丨4周圍。基體^ 5具有多數 接點(未圖示),其允許基體丨5及積體電路i 4來連接到外 部裝置。通常積體電路i 4具有多數端點及搭接墊定位在整 個電路上。在積體電路1 4内之信號及對應資訊,可以安置 成接觸搭接墊之外部探針1 6來感劓及載入。外撓性電路 1 2防止探針1 6來接觸端點,因而防止近接積體電路1 4内 之資訊。積體電路1 4可復蓋一外包(未圖示),其定位在 電路1 4之外表面及可撓性電路1 2之底表面。外包可進— 步保護電路1 4之表面。 \ 可撓性電路1 2可構造具有導電線路1 8來路由整個f路" 1 2。導電線路i 8可以是一蝕刻軌道,具附著到介電質取 -5- 、. 本紙張尺度適用中國國家橾皁(CNS ) A4規格(210 X 297公釐) (請先閱讀背面之注意事項再填寫本I) 、11 經濟部中央標準局員工消費合作.杜印製 471144 第841Μ0ό5號專利申請案 中文說明書修正百2 m 五、發明説明(3 ) 亞醯胺材料之外層。導電線路18可以彎曲形式來路由,而 經過在整個電路12來形成一連績單一轨道。導電線路18 可間隔’使得任何試圖安置探針在積體電路丨4上,會造成 4木針和;电軌道形成電氣接觸,因而遮蔽近接到電路14之 端點及搭接塾。 如圖3所示,為增加導電線路1 8之間隔及降低可撓性電 路12之製造成本,可撓性電路12可具有兩層,其中第— 層導電線路1 8 ’定位在第二層導電軌道丨8 ”間之空間内。可 撓性電路1 2可以比較可撓性電路丨2或積體電路丨4之材料 更強的黏接劑來黏接到積體電路丨4,使得任何試圖自晶片 14來解開可撓性電路12 ’將造成積體電路14之破壞、或 聚亞醯胺及導電線路18之分離,使得導電線路18仍然附 著在晶片1 4。 如圖4所示,一或多數積體電路1 4可安裝到印刷電路板 20。印刷電路板2〇可包含配線,其路由來互連積體電路 1 4。可撓性電路丨2可包圍在印刷電路板2 〇周圍來防止近 接到板2 0之路由。一替代性實施例少,一部份可棱性電路 1 2可以剛性基體來強化,且安裝在積體電路1 4。可撓性 電路12可具有附加導電線路,來提供積體電路14間之路 由。 如圖5所示,積體電路14、可撓性電路12及印刷電路^ 20可封裝在封裝22内。封裝22可以塑膠注射模塑法來形' 成。積體電路1 4可經習用技術之通孔、一引線框架或習他 封裝互連來連接到外部封裝引線(未圖示)。可撓性電路丨2 -6- ' 本紙張尺度適用中國國家標準(CNS ) A4規格(210 X 297公釐) -------0—裝------訂-----Y線 (請先閱讀背面之注意事項再填寫本頁) 144 7 第84丨14〇65號專利申請案 中文說明書絛正頁(89年2月)五、發明説明(4 ) A7 B7 經濟部中央標隼局員工消f合作社印製 即使在積體電路自封裝内移出或顯露,也防止近接到該積 體電路。 ' 圖6表示連接到積體電路14之一對電力接腳所連接可撓 性電路的導電線路18。導電線路18可作用為一保^ 絲,使得如果線路開路,則電力不能提供到積體電路“。 因此,如果一侵入者以切入可撓性電路12來試圖近接晶片 14,則導電線路18之功用將產生一開路電路,其防止積 體電路1 4之作業。 ' 如圖7所示,導電線路18也可連接到積體電路18之其他 接腳,如果導電線路丨8斷裂,則將使得積體電路不可作業 或不可近接。例如,可撓性電路12之導電線路18可提供 同步(sync)時鐘信號到積體電路。時鐘同步信號可為一未 知值’使得當導電線路斷裂時’侵入者不會提供匕—有效同 步信號到積體電路來作業該積體電路。如果積體電路是一 記憶體裝置’使得開路線路1 8抹除記憶體裝置之内容。 一替代性實施例,導電線路可連接到感測電路<並:線^ 18斷裂或受探測中時感測,因而n得積體電路㈣。s 此,可撓性電路12防止近接到積體電路晶片及/或積體 路内所包含之資訊。 % 雖然已說明某些範例實施例及以附圖决 固求表不,但是當然 此實施例僅圖示說明而非限制廣義之本發明,因此本發' 不限定在所表示及說明之特定構造及裳置,因為二於::'、 明者可實施各種其他修改例。 本紙張尺度適用中國國家標準(CNS ) A4規格(210X297公釐) (請先閲讀背面之注意事項再填寫本頁) 裝· 訂 •丨:>線

Claims (1)

  1. 471144 第84114065號專利申請案 ϋ尹請專利範18倏正本(89年ΐη πρ
    須諳委員明示,本案修正後是否變更原實質勺? 經濟部中央棣準局貝工消費合作社印製 六、申請專利範圍 1. 一種積體電路組件,其防止在封裝内之積體電路的詢 問,包含: 一積體電路,其具有一可作業的接腳;及 一可撓性電路,其覆蓋該積體電路且防止探針來近接 A積m电路,其中该可撓性電路包含一導電線路連接至 泫積體電路可作業的接腳,使得當該導電線路損壞時該 積體電路無法作業。 2_根據申請專利範圍第1項之組件,其中該可撓性電路之 導電線路電氣連接到該積體電路之時鐘同步信號接腳.。 根據申清專利範圍第1項之级件,其中該可撓性電路之 導電線路連接到該積體電路之記憶體抹除接腳。 4.根據申請專利範圍第1項之經件,其中該可撓性電路之 導電線路連接到該積體電路之感測電路,其當該導電線 路開路時使得該積體電路去能。 5,根據申請專利範圍第1項之組件,進一步包括一印刷電 路板’其附著在該積體電路上。 6,根據申清專利範圍第1項之組件,進一步包括一封裝, 其封包該積體電路及該可撓性電路。 7. 根據申請專利範圍第1項之組件,其中該導電線路以蜿 曲架構來路由。 8. 根據申請專利範圍第1項之組件,其中該可撓性電_具 有:導電線路部份,其以該可撓電路之第一層内的非、導 電間隔來分離;及和該第一層非導電間隔一致之該第二 層導電線路内所定位的一導電線路部份。 本紙張尺度逋用t國國家揉準(CNS ) Μ規格(210 X 297公釐) 471144 A8 B8 C8 D8 六、申請專利範圍 9· 一種積體電路封裝,包含: (請先閱讀背面之注意事項再填寫本頁} 一印刷電路板; 一積體電路,其安裝在該印刷電.路板上,該積體電路 具有一可作業的接腳; 一可撓性電路,其覆蓋該積體電路且防止探針來近接 遠積體電路,其中該可撓性電路包含一導電線路連接至 該積體電路可作業的接腳,使得當該導電線路損壞時該 積體電路無法作業;及 一封裝’其封包該印刷電路板,該積體電路及該可繞 性電路。 10.根據申凊專利範圍第9項之封裝’進一步包括^一引線框 架,其連接到該積體電路。 11,根據申請專利範圍第9項之封裝’其該可撓性電路之導 電線路電氣連接到該積體電路之時鐘同步信號接腳。 12·根據_請專利範圍第9項之封裝’其中該可撓性電路之 導電線路連接到該積體電路之記憶體抹除接腳。 經濟部中央橾隼局貝工消費合作社印裝 13.根據_請專利範圍第9項之封裝,其中該可撓性電路之 導電線路連接到該積體電路之感測電路,其當該導電緣 路開路時使得該積體電路去能。 根據申請專利範圍第9項之封裝,其中該導電線路以境 曲架構來路由。 Λ 15.根據申請專利範圍第9項之封裝’其中該可撓性電路具; 有:導電線路部份’其以遠可燒電路之第一層内的非 電間隔來分離;及和該第一層非導電間隔一致之該第二 本紙張尺度遑用中國a家梂準(CNS ) 格(2⑷X297公釐) 471144 8888 AficD 夂、申請專利範圍 層導電線路内所定位的一導電線路部份。 16. —種防止一積體電路之詢問的方法’包含下列步驟, 提供一具有一可作業接腳的積體電路; . 提供可性电路,其包含一導電線路連接該積體電路 之可作業接腳;以及 以肩可f生电路覆盖垓積體電路,使得當該導電線路損 壞時遠積體電路無法作業。 Π.根據申請專利範園第i 6項之方法,其中該積體電路為 一記憶體裝置,且如果該可撓性電路之導電軌道斷裂, 則記憶體裝置被抹除。 f請先閲讀背面之注意事項再填r本頁) ’裝· 線 經濟部中央橾率局Λ工消费合作社印裝 紙 本 A4 ---- NS (€ 準 輮 家a « t 用 適 公 )?7 29
TW084114065A 1995-03-28 1995-12-28 Method to prevent intrusions into electronic circuitry TW471144B (en)

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KR100281623B1 (ko) 2001-02-15
WO1996031101A1 (en) 1996-10-03
EP0818132B1 (en) 2005-07-20
EP0818132A1 (en) 1998-01-14
US6438825B1 (en) 2002-08-27
US5761054A (en) 1998-06-02
AU4981496A (en) 1996-10-16
DE69634952T2 (de) 2006-04-20
DE69634952D1 (de) 2005-08-25
KR19980702653A (ko) 1998-08-05
EP0818132A4 (en) 2000-01-05

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