Glass cover plate and manufacturing method thereof and optical fingerprint sensor

A fingerprint sensor, glass cover technology, applied in optics, optical components, acquisition/organization of fingerprints/palmprints, etc., can solve the problems of complex structure, high cost, shorten the service life of mobile terminals, etc., to improve the penetration, Energy damage reduction effect

Active Publication Date: 2017-09-22
SHANGHAI OXI TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] This installation method becomes explicit installation. On the one hand, the process is complicated and a special cover needs to be added, which is costly. On the other hand, the structure is complicated and affects the aesthetics of the mobile terminal. Holes will reduce the mechanical strength of the cover and reduce the service life of the mobile terminal

Method used

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  • Glass cover plate and manufacturing method thereof and optical fingerprint sensor
  • Glass cover plate and manufacturing method thereof and optical fingerprint sensor
  • Glass cover plate and manufacturing method thereof and optical fingerprint sensor

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Embodiment Construction

[0038] As mentioned in the background technology, due to the large thickness of the existing glass cover and the large energy loss of light propagation, the fingerprint identification module cannot be directly installed under the glass cover, and the use of a hole-digging structure will affect the mechanical strength of the glass cover. And the process is complicated and the cost is higher.

[0039] A modified area is formed on the glass cover plate of the embodiment of the present invention, and there is a total reflection path of light in the modified area, thereby improving the transmission performance of light without affecting the mechanical strength of the glass cover plate, and can be installed directly under the glass cover plate The fingerprint module has simple process and low cost.

[0040] In order to make the above objects, features and advantages of the present invention more comprehensible, specific embodiments of the present invention will be described in detai...

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Abstract

The invention provides a glass cover plate and a manufacturing method thereof and an optical fingerprint sensor. The glass cover plate comprises a glass substrate; a modified area which is arranged in the glass substrate, wherein the thickness of the modified area is less than that of the glass substrate and the surface of the modified area is partial surface of the glass substrate; and multiple total reflection paths which are arranged in the modified area and perpendicular to the surface of the glass substrate and penetrate through the modified area. The modified area of the glass cover plate has high light transmittance and mechanical strength.

Description

technical field [0001] The invention relates to the field of fingerprint sensors, in particular to a glass cover plate and a manufacturing method thereof, and an optical fingerprint sensor. Background technique [0002] Fingerprint imaging recognition technology is to collect the fingerprint image of the human body through the fingerprint sensor, and then compare it with the existing fingerprint imaging information in the system to judge whether it is correct or not, and then realize the technology of identity recognition. Due to its ease of use and the uniqueness of human fingerprints, fingerprint recognition technology has been widely used in various fields. For example, security inspection areas such as public security bureaus and customs, building access control systems, and consumer products such as personal computers and mobile phones, etc. [0003] Fingerprint imaging technology is implemented in various ways such as optical imaging, capacitive imaging, and ultrasoni...

Claims

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Application Information

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IPC IPC(8): G06K9/00G02B6/02
CPCG02B6/02033G06V40/1318
Inventor 黄定金朱虹陆震生
Owner SHANGHAI OXI TECH
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