Optical fingerprint sensor module
A fingerprint sensor and optical technology, applied in the direction of acquiring/organizing fingerprints/palmprints, instruments, characters and pattern recognition, etc., can solve problems such as performance needs to be improved, and achieve the effect of improving the quality of fingerprint images and expanding the width
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[0027] An optical fingerprint sensor module such as figure 1 As shown, a protective layer 100 , an optical fingerprint sensor 110 and a backlight 120 are included. The backlight 120 is located under the protective layer 100 , and the optical fingerprint sensor 110 is directly contacted and stacked under the protective layer 100 . The optical fingerprint sensor 110 includes a fingerprint sensing layer 111 and a substrate 112 . The fingerprint sensing layer 111 is located on the upper surface of the substrate 112 , that is, the fingerprint sensing layer 111 is located between the substrate 112 and the protection layer 100 . The backlight 120 is located on the side of the optical fingerprint sensor 110 . At this time, the incident angle a of the light emitted by the backlight source 120 entering the protective layer 100 is relatively small. Therefore, in the optical fingerprint sensor 110, the width A of the area where the fingerprint sensing layer 111 can receive reflected ligh...
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