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Under-screen fingerprint system, optical fingerprint display module and electronic device

A display module, fingerprint module technology, applied in optics, nonlinear optics, character and pattern recognition, etc., can solve problems such as affecting the user's visual perception of the display effect.

Active Publication Date: 2020-04-21
SHENZHEN GOODIX TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The present invention provides an under-screen fingerprint system, an optical fingerprint display module and an electronic device to solve the problems caused by the fingerprint module between the existing LCD liquid crystal panel and the backlight module. The group props up a certain air gap, which affects the display effect and the user's visual experience

Method used

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  • Under-screen fingerprint system, optical fingerprint display module and electronic device
  • Under-screen fingerprint system, optical fingerprint display module and electronic device
  • Under-screen fingerprint system, optical fingerprint display module and electronic device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0071] Figure 4 It is a schematic structural diagram of an under-display fingerprint system provided in Embodiment 1 of the present invention.

[0072] Such as Figure 4 As shown, the embodiment of the present invention provides an under-screen fingerprint system, which is applied to an electronic device having a display module 2 and a backlight module 1. The under-screen fingerprint system includes a fingerprint module 3, and the fingerprint module 3 is arranged on the backlight module. Between the group 1 and the display module 2, between the fingerprint module 3 and the display module 2, a first diffusion film layer 4 is provided, and the first diffusion film layer 4 is used to block the fingerprint module 3 so that the fingerprint module 3 The front of Display Module 2 is not visible.

[0073] Among them, in this embodiment, such as Figure 4 As shown, the fingerprint module 3 is located in the recessed structure of the backlight module 1, so that there is an air gap b...

Embodiment 2

[0084] Figure 5 Schematic diagram of the structure of the first diffusion film layer provided in Embodiment 2 of the present invention, Figure 6 It is a schematic structural diagram of another first diffusion film layer provided by Embodiment 2 of the present invention.

[0085] Further, on the basis of the first embodiment above, in this embodiment, as Figure 5 and Figure 6 As shown, diffusion particles 401 are distributed on the first diffusion film layer 4 .

[0086] Wherein, in this embodiment, by distributing the diffusion particles 401 on the first diffusion film layer 4, under the action of the diffusion particles 401, when the light passes through the first diffusion film layer 4, the diffusion particles 401 will change the propagation direction of the light or The path, such as: many refraction, reflection and scattering phenomena will occur to the light, thus causing the effect of optical diffusion, so as to increase the visible light haze of the first diffusi...

Embodiment 3

[0095] Further, the difference between this embodiment and the second embodiment is that, as Figure 7 and Figure 8 As shown, the diffusion particles 401 are uniformly distributed on the first diffusion film layer 4, and the visible light haze on the first diffusion film layer 4 is not less than 70% through the diffusion particles 401 evenly distributed on the first diffusion film layer 4, and The infrared haze of the fingerprint detection area 403 on the first diffusion film layer 4 is not greater than 20%.

[0096] Specifically, in this embodiment, by adjusting the distribution density of the diffusion particles 401 on the first diffusion film layer 4 , the visible light haze on the first diffusion film layer 4 can be made not less than 70%. In this embodiment, in order to ensure that the infrared haze of the fingerprint detection area 403 on the first diffusion film layer 4 is not greater than 20%.

[0097] Specifically, such as Figure 7 As shown, in this embodiment, t...

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Abstract

The invention provides an under-screen fingerprint system, an optical fingerprint display module and an electronic device. The under-screen fingerprint system comprises a fingerprint module, wherein the fingerprint module is arranged between a backlight module and a display module; a first diffusion film layer is arranged between the fingerprint module and the display module; the fingerprint module is blocked by the first diffusion film layer, so that the fingerprint module is invisible on the front surface of the display module, and under the action of the first diffusion film layer, receivedemergent light of the backlight module is reformed into a light source plane to illuminate the display module, so that the display effect and the visual perception of a user are improved.

Description

technical field [0001] The present application relates to the field of display technology, in particular to an under-display fingerprint system, an optical fingerprint display module and an electronic device. Background technique [0002] Full screen is the mainstream element of smartphones nowadays. The fingerprint recognition module under the screen is combined with the full screen design, which brings the ultimate visual experience and good user experience to users. [0003] Currently, in order to realize the full screen design of smartphones, such as figure 1 and figure 2 As shown, there is an existing liquid crystal display (LCD for short) fingerprint system under the screen. This system needs to hide the fingerprint module 3 within the black frame at the bottom of the mobile phone, and in this system, the backlight module 1 is close to the The area at the bottom of the mobile phone, that is, the backlight module 1 has a concave structure at the end close to the fing...

Claims

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Application Information

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IPC IPC(8): G06K9/00G02F1/1335G02F1/1333
CPCG02F1/13338G02F1/1335G02F1/133504G06V40/1324
Inventor 李顺展
Owner SHENZHEN GOODIX TECH CO LTD
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