DE69820551D1 - Schutz gegen elektrostatische Entladung für einen kapazitiven Fingerabdrucksabtastmatrix - Google Patents

Schutz gegen elektrostatische Entladung für einen kapazitiven Fingerabdrucksabtastmatrix

Info

Publication number
DE69820551D1
DE69820551D1 DE69820551T DE69820551T DE69820551D1 DE 69820551 D1 DE69820551 D1 DE 69820551D1 DE 69820551 T DE69820551 T DE 69820551T DE 69820551 T DE69820551 T DE 69820551T DE 69820551 D1 DE69820551 D1 DE 69820551D1
Authority
DE
Germany
Prior art keywords
electrostatic discharge
fingerprint sensing
discharge protection
capacitive fingerprint
sensing matrix
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
DE69820551T
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English (en)
Other versions
DE69820551T2 (de
Inventor
Alexander Kalnitsky
Alan Kramer
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Upek Inc
Original Assignee
STMicroelectronics lnc USA
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by STMicroelectronics lnc USA filed Critical STMicroelectronics lnc USA
Publication of DE69820551D1 publication Critical patent/DE69820551D1/de
Application granted granted Critical
Publication of DE69820551T2 publication Critical patent/DE69820551T2/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01LSEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L27/00Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate
    • H01L27/02Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components specially adapted for rectifying, oscillating, amplifying or switching and having at least one potential-jump barrier or surface barrier; including integrated passive circuit elements with at least one potential-jump barrier or surface barrier
    • H01L27/0203Particular design considerations for integrated circuits
    • H01L27/0248Particular design considerations for integrated circuits for electrical or thermal protection, e.g. electrostatic discharge [ESD] protection
    • GPHYSICS
    • G06COMPUTING; CALCULATING OR COUNTING
    • G06VIMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
    • G06V40/00Recognition of biometric, human-related or animal-related patterns in image or video data
    • G06V40/10Human or animal bodies, e.g. vehicle occupants or pedestrians; Body parts, e.g. hands
    • G06V40/12Fingerprints or palmprints
    • G06V40/13Sensors therefor
    • G06V40/1329Protecting the fingerprint sensor against damage caused by the finger
    • GPHYSICS
    • G06COMPUTING; CALCULATING OR COUNTING
    • G06FELECTRIC DIGITAL DATA PROCESSING
    • G06F2203/00Indexing scheme relating to G06F3/00 - G06F3/048
    • G06F2203/041Indexing scheme relating to G06F3/041 - G06F3/045
    • G06F2203/04107Shielding in digitiser, i.e. guard or shielding arrangements, mostly for capacitive touchscreens, e.g. driven shields, driven grounds
DE69820551T 1997-09-11 1998-09-10 Schutz gegen elektrostatische Entladung für einen kapazitiven Fingerabdrucksabtastmatrix Expired - Lifetime DE69820551T2 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US08/927,450 US6483931B2 (en) 1997-09-11 1997-09-11 Electrostatic discharge protection of a capacitve type fingerprint sensing array
US927450 1997-09-11

Publications (2)

Publication Number Publication Date
DE69820551D1 true DE69820551D1 (de) 2004-01-29
DE69820551T2 DE69820551T2 (de) 2004-11-04

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
DE69820551T Expired - Lifetime DE69820551T2 (de) 1997-09-11 1998-09-10 Schutz gegen elektrostatische Entladung für einen kapazitiven Fingerabdrucksabtastmatrix

Country Status (4)

Country Link
US (4) US6483931B2 (de)
EP (1) EP0902387B1 (de)
JP (1) JP4198239B2 (de)
DE (1) DE69820551T2 (de)

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US7768273B1 (en) 2010-08-03
US6483931B2 (en) 2002-11-19
EP0902387A2 (de) 1999-03-17
US20030035572A1 (en) 2003-02-20
US6987871B2 (en) 2006-01-17
EP0902387A3 (de) 2001-01-17
JPH11164824A (ja) 1999-06-22
US20010012384A1 (en) 2001-08-09
DE69820551T2 (de) 2004-11-04
EP0902387B1 (de) 2003-12-17
US7522753B2 (en) 2009-04-21
JP4198239B2 (ja) 2008-12-17
US20060011997A1 (en) 2006-01-19

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