A fingerprint identification device and its manufacturing method and display device
A fingerprint recognition and fingerprint technology, which is used in character and pattern recognition, acquisition/organization of fingerprints/palmprints, and print image collection, etc. effect of life
Active Publication Date: 2021-03-23
BOE TECH GRP CO LTD +1
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Problems solved by technology
[0007] In view of this, the present invention provides a fingerprint recognition device, which is used to solve the problems of low service life and low recognition accuracy of existing fingerprint recognition devices
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[0025] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention more clear, the following will clearly and completely describe the technical solutions of the embodiments of the present invention in conjunction with the drawings of the embodiments of the present invention. Apparently, the described embodiments are some, not all, embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the described embodiments of the present invention belong to the protection scope of the present invention.
[0026] Please refer to figure 1 and figure 2 , the present invention provides a fingerprint identification device, comprising: a substrate 101, a plurality of photosensitive devices 102 arranged at intervals on a first side of the substrate 101, and a part of the photosensitive device 102 far away from the substrate 101 The elastic deformation layer 103 on one side, and the backlight 104...
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Abstract
The present invention provides a fingerprint recognition device, a manufacturing method thereof, and a display device. The fingerprint recognition device comprises: a substrate, a photosensitive device and an elastic deformation layer arranged on a first side of the substrate, and a backlight arranged on a second side of the substrate. , the light emitted by the backlight is irradiated on the elastic deformation layer through the space between the photosensitive devices. Identify the lifetime of the device. When the elastic deformation layer is pressed by a finger, it can deform corresponding to the valleys and ridges of the fingerprint, and the elastic deformation layer at the position corresponding to the ridge of the fingerprint is thinned and transparent, so that the ridge of the fingerprint can receive and reflect the light emitted by the backlight. When the light reaches the photosensitive device, the elastic deformation layer at the corresponding position of the valley of the fingerprint can absorb the light emitted by the backlight, so that there is no reflected light at the valley of the fingerprint, which effectively improves the accuracy of fingerprint recognition.
Description
technical field [0001] The invention relates to the technical field of fingerprint identification, in particular to a fingerprint identification device, a manufacturing method thereof and a display device. Background technique [0002] In recent years, with the rapid development of display technology, display products with biometric functions have gradually entered people's lives and work. Among them, fingerprint technology has attracted much attention due to its unique identity. [0003] The traditional fingerprint identification device uses light reflected by the valleys and ridges on the fingerprint, and the reflected light of different intensities received by the photosensitive device generates different sensing signals, so as to distinguish the valleys and ridges on the fingerprint and achieve the goal of identifying fingerprints. Effect. [0004] Traditional fingerprint identification devices have the following disadvantages: [0005] (1) Because the long-term strong...
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IPC IPC(8): G06K9/00
CPCG06V40/1318G06V40/1329G06V40/1376
Inventor 李挺高山黄炜赟王杨徐元杰刘庭良曹中林臧鹏程
Owner BOE TECH GRP CO LTD