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Fingerprint identification system

A fingerprint recognition and light source technology, applied in character and pattern recognition, instruments, computer parts, etc., can solve the problems of complex backlight structure, difficult screen LCD module fingerprint recognition, and many noises.

Pending Publication Date: 2019-11-08
SILEAD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, for the LCM screen, since the LCM is a passive light-emitting mode, a backlight is required to display
The backlight is a light source located behind the LCD module, its luminous effect will directly affect the visual effect of the LCD module, and the structure of the backlight itself is relatively complicated, and there are many noises. Module fingerprint recognition

Method used

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Embodiment Construction

[0031] In order to enable those skilled in the art to better understand the technical solutions in the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described The embodiments are only some of the embodiments of the present invention, not all of the embodiments. Based on the implementation manners in the present invention, all other implementation manners obtained by persons of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present invention.

[0032] It should be noted that when an element is referred to as being “disposed on” another element, it may be directly on the other element or there may be another element in between. When an element is referred to as being "connected to" another element, it can be directly connected to th...

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Abstract

The invention discloses a fingerprint identification system, which is used for being placed below backlight of a liquid crystal display module, and comprises a receiver capable of forming a predetermined visual angle area; at least two light sources, the wavelength corresponding to the light emitted by the light source is beyond the wavelength range of the light emitted by the backlight; the lightsource takes the receiver as the center; the light sources are distributed in the circumferential direction of the receiver, the light sources are located outside the preset viewing angle area, the wavelength of visible light emitted by the backlight ranges from 380 nm to 780 nm, the light sources are infrared light sources, the wavelength peak value of infrared light emitted by the light sourcesranges from 940 nm, and the half-wavelength width of the infrared light emitted by the light sources is smaller than or equal to 50 nm. The fingerprint identification system provided by the inventioncan realize fingerprint identification of the screen liquid crystal display module.

Description

technical field [0001] The present application relates to the field of fingerprint identification, in particular to a fingerprint identification system. Background technique [0002] With the development of biometric technology, under-screen fingerprint recognition technology has been widely used in portable mobile terminals such as mobile phones. At present, taking mobile phone screens as an example, according to different types of light sources, they are mainly divided into: Liquid Crystal Display (LCM for short) screens and Organic Light-Emitting Diode (OLED for short) screens. [0003] In order to improve screen utilization and pursue a larger screen-to-body ratio, the OLED screen has realized a full-screen fingerprint recognition function. However, for the LCM screen, since the LCM is a passive light emitting mode, a backlight source is required for display. The backlight is a light source located behind the LCD module, its luminous effect will directly affect the vis...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06K9/00G06K9/20
CPCG06V40/1324G06V10/143G06V10/147
Inventor 田永平孙云刚高文才
Owner SILEAD
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