Under-screen fingerprint device and display module

A technology of fingerprint device and display screen, which is applied in the directions of acquiring/arranging fingerprints/palmprints, detecting live finger shapes, character and pattern recognition, etc., and can solve problems such as potential safety hazards

Pending Publication Date: 2020-09-04
BEIJING JIIOV TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The first purpose of the present invention is to provide an under-screen fingerprint device, which can improve the safety hazards caused by the inability to determine whether the fingerprint identification is a real finger or a fake fingerprint texture information carrier such as "fingerprint film" in the prior art. The problem

Method used

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  • Under-screen fingerprint device and display module
  • Under-screen fingerprint device and display module
  • Under-screen fingerprint device and display module

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0049] In this example, see figure 2 and image 3 , figure 2 Shown is the corresponding relationship between the light path guiding structure 12, the filter film layer 13 and the microlens 14 in the plan view direction, image 3 for figure 2 The schematic cross-sectional view along the A1-A2 direction in . exist figure 2 Among them, each small square is a photosensitive unit of the photosensitive sensor array 11, and the area corresponding to each photosensitive unit on the light path guiding structure 12 is provided with a first light-transmitting hole 120 as required, wherein the square with a small hole inside It indicates that the area corresponding to the photosensitive unit of the light path guiding structure 12 is provided with a first light transmission hole 120, and the square without a small hole inside indicates that the area of ​​the light path guiding structure 12 corresponding to the photosensitive unit is not provided with a first light transmission hole...

Embodiment 2

[0072] This embodiment is a further improvement of the above-mentioned embodiment 1. On the basis of the above-mentioned embodiment 1 and its modified embodiments, the wavelength band and The colors of the light emitted by the pixels corresponding to the filter films on the display screen 2 are the same. It can be understood that the light emitted by a pixel of a certain color on the display screen 2 will reach the corresponding pixel on the filter film layer 13 when it is reflected by a finger or other fingerprint texture information carriers in the fingerprint recognition area of ​​the display screen and then shoots downward. In the filter area, when encountering a filter film of the same color, more light will pass through the filter film, thereby facilitating the photosensitive unit of the photosensitive sensor array 11 to perform better and more accurate spectrum recognition processing, thereby It helps to improve the accuracy and success rate of live fingerprint detectio...

Embodiment 3

[0074] This embodiment is a further improvement of the above-mentioned embodiment 1 and embodiment 2. On the basis of the above-mentioned embodiment 1 and its variant embodiments and embodiment 2, the under-screen fingerprint device 1 includes at least one supplementary light unit 15, so The supplementary light unit 15 is arranged on the edge area of ​​the substrate 10, and is used to emit light to the fingerprint identification area on the display screen 2, and the light emitted by each supplementary light unit 15 can pass through at least one of the filters. light film. For example, the supplementary light unit 15 emits white light, and the white light can pass through various filter films; while the supplementary light unit 15 emits red light, the red light can pass through a filter film that allows red visible light to pass through. By setting the supplementary light unit 15, on the one hand, the brightness of the light emitted to the fingerprint recognition area of ​​the ...

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Abstract

The invention provides an under-screen fingerprint device and a display module. The under-screen fingerprint device comprises a substrate and a photosensitive sensing array arranged on the substrate,wherein the photosensitive sensing array comprises a plurality of photosensitive units; a light path guide structure and a filter film layer are arranged above the photosensitive sensing array; wherein the light path guide structure is provided with a plurality of first light holes, the light filtering film layer comprises a plurality of light filtering areas, each light filtering area is providedwith the same kind of light filtering film, and the light filtering films in different areas are the same or different; the area, corresponding to at least part of photosensitive units of the photosensitive sensor array, of the light path guide structure is a first light hole, and the area, corresponding to at least part of photosensitive units, of the light filtering film layer is a light filtering film; and at least part of the photosensitive units are used for receiving spectral information which is emitted downwards from the direction of the display screen and penetrates through the corresponding light filtering films and the first light transmitting holes. The under-screen fingerprint device can effectively realize living body fingerprint detection.

Description

technical field [0001] The invention relates to the field of fingerprint recognition and display, in particular to an under-screen fingerprint device and a display module including the under-screen fingerprint device. Background technique [0002] Based on the pursuit of a full screen, the fingerprint technology under the screen has been widely used in terminal electronic devices such as mobile phones, and, with the development of technology, the accuracy of fingerprint recognition is getting higher and higher. [0003] However, in the prior art, the under-screen fingerprint recognition devices used in terminal electronic devices such as mobile phones cannot well detect whether the fingerprint to be recognized on the screen is from a real person's finger, or from a "fingerprint film" etc. A carrier carrying fingerprint texture information. In this way, there is a big security risk, that is, the fingerprint texture information of a person can be obtained, and it can be forme...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06K9/00
CPCG06V40/1394G06V40/1318
Inventor 王鹏鹏王海生曹学友
Owner BEIJING JIIOV TECH CO LTD
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