FINGERPRINT RECOGNITION DEVICE, RECOGNITION DEVICE AND DISPLAY DEVICE

FINGERPRINT RECOGNITION DEVICE, RECOGNITION DEVICE AND DISPLAY DEVICE

A fingerprint recognition device, a recognition device and a display device are provided to include: a light guiding layer and a plurality of recognizer units, on a side of a light transmission substrate. Each recognizer unit includes: a first optical grating which is between the light guiding layer...

Ausführliche Beschreibung

Gespeichert in:
Bibliographische Detailangaben
Hauptverfasser: WANG, Wei, GAO, Jian, CHEN, Xiaochuan, GU, Pinchao, WANG, Haisheng, MENG, Xiandong
Format: Patent
Sprache:eng
Schlagworte:
BASIC ELECTRIC ELEMENTS
CALCULATING
COMPUTING
COUNTING
ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR
ELECTRICITY
HANDLING RECORD CARRIERS
PHYSICS
PRESENTATION OF DATA
RECOGNITION OF DATA
RECORD CARRIERS
SEMICONDUCTOR DEVICES
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Beschreibung
Zusammenfassung:A fingerprint recognition device, a recognition device and a display device are provided to include: a light guiding layer and a plurality of recognizer units, on a side of a light transmission substrate. Each recognizer unit includes: a first optical grating which is between the light guiding layer and the light transmission substrate and is configured to diffractively couple a fingerprint light ray having an incident angle within a preset angle range to the light guiding layer; a second optical grating on a side of the light guiding layer; and a detector module on a side of the second optical grating away from the light guiding layer. The second optical grating is configured to extract the fingerprint light ray in the light guiding layer to the detector module, and the detector module is configured to detect a light intensity of the fingerprint light ray.