Fingerprint recognition device and fingerprint recognition method

The present invention relates to a fingerprint recognition device, which can be made thinner and less expensive. A light-guide plate 2 guides light entering from an end face. A transmission liquid-crystal plate 1 is opened by pixel unit. Light from the protruding portions 31A and recessed portions 3...

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1. Verfasser: IWAI HAJIMU
Format: Patent
Sprache:eng
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Zusammenfassung:The present invention relates to a fingerprint recognition device, which can be made thinner and less expensive. A light-guide plate 2 guides light entering from an end face. A transmission liquid-crystal plate 1 is opened by pixel unit. Light from the protruding portions 31A and recessed portions 31B constituting the fingerprint of a finger 31 is collected via on aperture of transmission liquid-crystal plate 1, and converted from light energy to electrical energy by a photodetector element. The present invention is applicable to a fingerprint recognition device.