A Singlechip Fingerprint Sensor And Identifier

• doi: 10.1109/4.808910
• title: A single-chip fingerprint sensor and identifier
• publisher: IEEE
• isbn:
• issn: 1558-173X
• rank: 1294
• access_type: LOCKED
• content_type: Journals
• abstract: A chip architecture that integrates a fingerprint sensor and an identifier in a single chip is proposed. The fingerprint identifier is formed by an array of pixels, and each pixel contains a sensing element and a processing element. The sensing element senses capacitances formed by a finger surface to capture a fingerprint image. An identification is performed by the pixel-parallel processing of the pixels. The sensing element is built above the processing element in each pixel. The chip architecture realizes a wide-area sensor without a large increase of chip size and ensures high sensor sensitivity while maintaining a high image density. The sensing element is covered with a hard film to prevent physical and chemical degradation and surrounded by a ground wall to shield it. The wall is also exposed on the chip surface to protect against damage by electrostatic discharges from the finger contacting the chip. A 15/spl times/15 mm/sup 2/ single-chip fingerprint sensor/identifier LSI was fabricated using 0.5-/spl mu/m standard CMOS with the sensor process. The sensor area is 10.1/spl times/13.5 mm/sup 2/. The sensing and identification time is 102 ms with power consumption of 8.8 mW at 3.3 V. Five hundred tests confirmed a stranger-rejection rate of the chip of more than 99% and a user-rejection rate of less than 1%.
• article_number: 808910
• pdf_url: https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=808910
• html_url: https://ieeexplore.ieee.org/document/808910/
• abstract_url: https://ieeexplore.ieee.org/document/808910/
• publication_title: IEEE Journal of Solid-State Circuits
• conference_location:
• conference_dates:
• publication_number: 4
• is_number: 17515
• publication_year: 1999
• publication_date: Dec. 1999
• start_page: 1852
• end_page: 1859
• citing_paper_count: 50
• citing_patent_count: 28
• download_count: 859
• insert_date: 20020806
• index_terms:
  • ieee_terms:
    • Fingerprint recognition
    • Chemical elements
    • Chemical sensors
    • Fingers
    • Image sensors
    • Capacitance
    • Image matching
    • Degradation
    • Surface discharges
    • Protection
  • dynamic_index_terms:
    • Fingerprint Sensors
    • Processing Elements
    • Chemical Degradation
    • Chemical Breakdown
    • Chemical Decomposition
    • Chip Surface
    • Single Chip
    • Pixel Array
    • Sensor Area
    • Chip Size
    • Electrostatic Discharge
    • Image Processing
    • User Data
    • Processing Unit
    • Photodetector
    • Ruthenium
    • Neighboring Pixels
    • Neighborhood Pixels
    • Capacitive Coupling
    • Electrostatic Coupling
    • AC-coupled
    • Large Memory
    • Thumbprint
    • Fingerprint Identification
    • Chemical Damage
    • Sensor Structure
    • Mobile Equipment
    • Processing Circuit
    • Portable Equipment
    • Conventional Architecture
    • Test Chip
    • User Authentication
    • Memory Circuits
    • Matching Ratio
    • Sensor Unit
    • Vertical Integration
    • Supplier Integration
• authors:
  • Author Name: S. Shigematsu
    Affiliation: NTT Lifestyle and Environmental Technology Laboratories, Kanagawa, Japan
    Author URL: https://ieeexplore.ieee.org/author/37265813400
    ID: 37265813400
    Order: 1
    Author Affiliations:
    • NTT Lifestyle and Environmental Technology Laboratories, Kanagawa, Japan
  • Author Name: H. Morimura
    Affiliation: NTT Lifestyle and Environmental Technology Laboratories, Kanagawa, Japan
    Author URL: https://ieeexplore.ieee.org/author/37265815200
    ID: 37265815200
    Order: 2
    Author Affiliations:
    • NTT Lifestyle and Environmental Technology Laboratories, Kanagawa, Japan
  • Author Name: Y. Tanabe
    Affiliation: NTT Lifestyle and Environmental Technology Laboratories, Kanagawa, Japan
    Author URL: https://ieeexplore.ieee.org/author/37338457000
    ID: 37338457000
    Order: 3
    Author Affiliations:
    • NTT Lifestyle and Environmental Technology Laboratories, Kanagawa, Japan
  • Author Name: T. Adachi
    Affiliation: NTT Lifestyle and Environmental Technology Laboratories, Kanagawa, Japan
    Author URL: https://ieeexplore.ieee.org/author/37331415000
    ID: 37331415000
    Order: 4
    Author Affiliations:
    • NTT Lifestyle and Environmental Technology Laboratories, Kanagawa, Japan
  • Author Name: K. Machida
    Affiliation: NTT Telecommunications Energy Laboratories, Kanagawa, Japan
    Author URL: https://ieeexplore.ieee.org/author/37265816000
    ID: 37265816000
    Order: 5
    Author Affiliations:
    • NTT Telecommunications Energy Laboratories, Kanagawa, Japan

Image Sensor

• sensor_type: CMOS
• resolution: 124 x 166 pixels
• dynamic_range: Not specified
• pixel_size: 81.6 µm
• dark_current: Not specified

Optical Data

• focal_length: Not specified
• aperture: Not specified
• field_of_view: Not specified
• distortion: Not specified

Performance Metrics

• power_consumption: 8.8 mW (total), 2.6 mW (sensing), 6.2 mW (identification)

Applications & Benefits

• cell_imaging: Used for fingerprint sensing in mobile and portable devices, providing user authentication.
• benefits: Compact, inexpensive, and secure user data handling without transmitting fingerprint data externally.

Supporting Organizations

• supported_by: NTT Lifestyle and Environmental Technology Laboratories, NTT Telecommunication Energy Laboratories

Manuscript Details

• publication_date: Dec. 1999

Relevancy Score

• score: 9
• missing_fields:
  • fill factor
  • quantum efficiency
  • readout speed
  • noise sources
  • analog-to-digital conversion techniques
  • microlenses
  • on-chip colour filters
  • global or rolling shutters
  • backside illumination

Processed JSON Filename

request_4dac7a04-6011-41fd-8002-727172b2d9df-a_singlechip_fingerprint_sensor_and_identifier.json