Signal strength enhancement in a biometric sensor array
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United States of America Patent
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Aug 14, 2018
Grant Date -
Apr 6, 2017
app pub date -
Dec 19, 2016
filing date -
Oct 28, 2010
priority date (Note) -
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status (Latency Note)
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Abstract
A biometric imager may comprise a plurality of sensor element traces formed in or on a sensor substrate which may comprise at least a portion of a display screen defining a biometric sensing area and forming in-active pixel locations; an auxiliary active circuit formed in or on the sensor substrate on the periphery of the biometric sensing area and in direct or indirect electrical contact with the sensor element traces; and providing a signal processing interface to a remotely located controller integrated circuit. The sensor element traces may form a portion of one dimensional linear sensor array or pixel locations in a two dimensional grid array capacitive gap biometric imaging sensor. The auxiliary circuit may provide pixel location selection or pixel signal amplification. The auxiliary circuit may be mounted on a surface of the display screen. The auxiliary circuit further comprising a separate pixel location selection controller circuit.
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International Classification(s)
- H04L:TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAP....
- H01L:SEMICONDUCTOR DEVICES; ELECTRIC SOLID STATE DEVICE....
- H04N:PICTORIAL COMMUNICATION, e.g. TELEVISION
- G07C:TIME OR ATTENDANCE REGISTERS; REGISTERING OR INDIC....
- G06F:ELECTRIC DIGITAL DATA PROCESSING
- G06K:RECOGNITION OF DATA; PRESENTATION OF DATA; RECORD ....
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