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Under-screen optical fingerprint identification system and electronic device

A technology of fingerprint identification and fingerprint identification module, which is applied in the field of fingerprint identification, and can solve the problems such as the inability to realize fingerprint detection under the screen

Active Publication Date: 2020-01-10
SHENZHEN GOODIX TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The invention provides an under-screen optical fingerprint identification system and an electronic device to solve the problem that the existing optical fingerprint identification module is set on the side of the display module away from the display panel in LCD mode, and cannot realize the under-screen fingerprint detection.

Method used

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  • Under-screen optical fingerprint identification system and electronic device
  • Under-screen optical fingerprint identification system and electronic device
  • Under-screen optical fingerprint identification system and electronic device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0066] figure 1 It is a schematic structural diagram of an under-display optical fingerprint recognition system provided in Embodiment 1 of the present invention, figure 2 It is a schematic structural diagram of another off-screen optical fingerprint recognition system provided in Embodiment 1 of the present invention, image 3 It is a schematic diagram of setting up a fingerprint detection light source in an under-screen optical fingerprint recognition system provided by Embodiment 1 of the present invention, Figure 4 It is a schematic diagram of setting up a fingerprint detection light source in another off-screen optical fingerprint recognition system provided by Embodiment 1 of the present invention. Figure 5 It is a schematic diagram of setting up a fingerprint detection light source in another off-screen optical fingerprint recognition system provided by Embodiment 1 of the present invention. Figure 6 A schematic diagram of setting up a fingerprint detection light ...

Embodiment 2

[0088] Further, on the basis of Embodiment 1, in this embodiment, as figure 1 and figure 2 As shown, the backlight module 30 includes: a diffusion film 32 through which the detection light can pass, and the diffusion film 32 is used to atomize the visible light emitted by the backlight module 30 . The diffusion film of the existing backlight module has haze to invisible light such as visible light and infrared light, so that the light emitted by the fingerprint detection light source cannot pass through the backlight module for imaging, but in this embodiment, the detection light can pass through over the diffusion film 32, and the diffusion film 32 has an atomization effect on the visible light emitted by the backlight module 30, so that when the detection light passes through the backlight module 30, the influence of the diffusion film 32 on the optical performance of the detection light can be avoided , while not affecting the performance of the backlight module 30, it ca...

Embodiment 3

[0096] Figure 12 It is a schematic structural diagram of an under-display optical fingerprint recognition system provided by Embodiment 3 of the present invention, Figure 13 It is a schematic structural diagram of another under-display optical fingerprint recognition system provided by Embodiment 3 of the present invention.

[0097] The difference from Embodiment 2 is that in this embodiment, the backlight module 30 also includes: a brightness enhancement film 31 through which the detection light can pass. In Embodiment 1, compared with the existing backlight module, there is no Including prism film, this may reduce the brightness of the backlight module 30, which cannot meet the needs of users. In order to further improve the brightness of the backlight module 30, as Figure 12 and Figure 13 As shown, in this embodiment, the backlight module 30 further includes a brightness enhancement film 31 that allows detection light to pass through. The brightness enhancement film 3...

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Abstract

The invention provides an under-screen optical fingerprint identification system and an electronic device. The under-screen optical fingerprint identification system comprises an optical fingerprint identification module and a fingerprint detection light source; the optical fingerprint identification module is located on the side, deviating from a display panel, of a backlight module. The fingerprint detection light source is used for emitting detection light to a fingerprint detection area on the display panel; the detection light is non-visible light capable of penetrating through the backlight module, and the detection light is reflected by a finger on the detection area, penetrates through the backlight module and enters the optical fingerprint identification module, so that the optical fingerprint identification module forms a fingerprint image according to the reflected detection light. Detection light emitted by the fingerprint detection light source irradiates the finger on thefingerprint detection area to be reflected, so that the detection light which carries fingerprint information and is reflected can also penetrate through the backlight module and irradiate the optical fingerprint identification module located behind the backlight module, the optical fingerprint identification module can form a fingerprint image according to the reflected detection light, and therefore detection of the optical fingerprint is achieved.

Description

technical field [0001] The present application relates to the technical field of fingerprint identification, in particular to an under-screen optical fingerprint identification system and an electronic device. Background technique [0002] Fingerprint identification technology refers to identifying fingerprint information by sensing and analyzing the valley and ridge signals of fingerprints through fingerprint identification modules. It has the advantages of high security and convenient and quick operation, and is widely used in electronic products. Fingerprint imaging technology can be implemented in various ways such as optical imaging, capacitive imaging, and ultrasonic imaging. Among them, optical fingerprint recognition technology has gradually become a fingerprint recognition technology because of its strong penetrating ability, support for full-screen display, and simple product structure design. The mainstream of identification technology is widely used in electronic...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06K9/00G06V10/141G06V10/143
CPCG09F9/00G06V40/1324G06V40/1318G02B5/208G06V40/1394G06V10/141G06V10/143
Inventor 谢浩
Owner SHENZHEN GOODIX TECH CO LTD