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Optical collimator, forming method thereof and fingerprint sensor module

A fingerprint sensor and optical collimation technology, applied in the direction of acquiring/organizing fingerprints/palmprints, optics, instruments, etc., can solve the problems of poor performance of fingerprint sensor modules, etc., and achieve the effect of reducing the total thickness and easily large area

Pending Publication Date: 2020-06-05
SHANGHAI OXI TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, the performance of existing fingerprint sensor modules is poor

Method used

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  • Optical collimator, forming method thereof and fingerprint sensor module
  • Optical collimator, forming method thereof and fingerprint sensor module
  • Optical collimator, forming method thereof and fingerprint sensor module

Examples

Experimental program
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Embodiment Construction

[0040] As mentioned in the background, prior art light collimators perform poorly.

[0041] A fingerprint sensor module, refer to figure 1 , comprising: an optical fingerprint sensor 100 ; a self-luminous display panel 130 located above the optical fingerprint sensor 100 ; a light collimator 120 located between the optical fingerprint sensor 100 and the self-luminous display panel 130 .

[0042] The function of the light collimator 120 includes: making the light passing through the light collimator 120 more collimated.

[0043] The formation of the optical collimator 120 depends on the base material, and the base material is silicon wafer or glass.

[0044] The optical channel in the optical collimator 120 needs to have a certain aspect ratio, such as 5:1˜30:1. In order to meet the requirement of a certain aspect ratio, the thickness of the rigid optical collimator 120 is generally thicker, about 0.1 mm to 0.7 mm. The rigid optical collimator 120 is limited by the technolog...

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Abstract

The invention discloses an optical collimator, a forming method thereof and a fingerprint sensor module. The optical collimator comprises a plurality of stacked flexible non-light-transmitting layers,each flexible non-light-transmitting layer is internally provided with a sub-layer optical channel penetrating through the flexible non-light-transmitting layer, and for the sub-layer optical channelin the adjacent flexible non-light-transmitting layer, the sub-layer optical channel of the upper layer is located above the sub-layer optical channel of the lower layer; and a channel flexible light-transmitting layer is positioned in each sub-layer optical channel. The performance of the optical collimator is improved.

Description

technical field [0001] The invention relates to the field of optical fingerprint identification, in particular to an optical collimator, a forming method thereof, and a fingerprint sensor module. Background technique [0002] Fingerprint imaging recognition technology is to collect the fingerprint image of the human body through the optical 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 imaging 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. The realization of fingerprint imaging recognition technology includes optical imaging, capacitive imaging,...

Claims

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Application Information

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IPC IPC(8): G02B27/30G06K9/00
CPCG02B27/30G06V40/1318
Inventor 陆震生朱虹
Owner SHANGHAI OXI TECH