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Electronic equipment with under-screen infrared biosensor

An electronic device, infrared technology, used in instruments, electrical digital data processing, character and pattern recognition, etc., can solve problems such as image sensing

Pending Publication Date: 2020-06-02
EGIS TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If the CIS module is placed under the light-enhancing film and the light guide plate of the backlight module, there is an anti-reflection coating (Anti-Reflection Coating, ARC) in the backlight module, which allows visible light to be fully reflected, so the visible light reflected from the finger Unable to penetrate and reach the CIS module, causing image sensing problems

Method used

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  • Electronic equipment with under-screen infrared biosensor
  • Electronic equipment with under-screen infrared biosensor
  • Electronic equipment with under-screen infrared biosensor

Examples

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Embodiment Construction

[0083] The author of this case found that infrared (IR) can penetrate the above-mentioned ARC. In this way, the IR is printed on the finger, and the finger reflects the IR and passes through the cover glass, display panel and backlight module to be received by the CIS module. , to achieve fingerprint sensing. However, if you want to print the IR from the bottom of the backlight module to the finger, the IR goes up and passes through the backlight module, and the IR goes down through the backlight module. In this way, the outgoing IR is blurred, and the reflected IR is also blurred, so that the image of the sensed fingerprint is blurred. If you want to transmit IR to the finger from the front, there will be many interference problems to be solved.

[0084] This case proposes four design architectures to achieve the IR emission to the finger. The first one is about side lighting, where IR is emitted from one side of the protective glass (cover glass), where an ARC can be set u...

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Abstract

The invention provides electronic equipment with an under-screen infrared biosensor, which includes a backlight module, a display panel, a light-transmitting protection plate, an optical sensor and aninfrared light source. The backlight module provides visible light to travel upward, and has a reflective layer to block visible light from traveling downward. The display panel is arranged above thebacklight module and displays information according to visible light. The light-transmitting protection plate is arranged above the display panel and allows information to penetrate. The optical sensor is arranged below the backlight module. The infrared light source provides infrared light to the living body on or above the light-transmitting protection plate. The biological body reflects infrared light to generate reflected infrared light. The reflected infrared light is received by the optical sensor through the light-transmitting protection plate, the display panel and the backlight module, so that the optical sensor obtains an image signal of an image representing the image of the biological body to realize the under-screen image sensing function.

Description

[0001] cross reference [0002] This application was submitted on September 16, 2019 in accordance with 35 U.S.C. §119, and the U.S. provisional application 62 / 900,812 with the title of invention "IR LEDLIGHTING INTEGRATED WITH LGP IN LCD FOD SOLUTION" was filed on November 26, 2019. Priority to U.S. Provisional Application 62 / 940,445, entitled "LGP FINGERPRINT APPLICATION RULER," and the above application is incorporated by reference. technical field [0003] The present invention relates to an electronic device with an under-screen infrared biosensor, and in particular to an electronic device with an under-screen infrared biosensor that can be applied to liquid crystal displays (Liquid Crystal Display, LCD) and OLEDs. Electronic devices for devices, and backlight modules for display panels. Background technique [0004] Today's mobile electronic devices (such as mobile phones, tablet computers, laptops, etc.) are usually equipped with user biometric systems, including di...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06K9/00G06F3/042
CPCG06F3/042G06V40/1318
Inventor 傅同龙王伟榕周正三
Owner EGIS TECH