Touch awakening fingerprint imaging module group and touch awakening apparatus thereof

An imaging module and wake-up device technology, applied in the field of fingerprint recognition, can solve problems such as damage to the processing chip, easy conduction of static electricity in the human body, and failure to meet the use requirements, etc., to achieve the effect of reducing the discharge current and reducing the possibility

Active Publication Date: 2015-12-23
SHANGHAI OXI TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But when the finger 1 touches the metal protective frame 14, the static electricity of the human body is easily conducted to the metal protective frame 14.
Static electricity from the human body can easily damage the processing chip 12
[0009] Electro-Static Discharge (

Method used

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  • Touch awakening fingerprint imaging module group and touch awakening apparatus thereof
  • Touch awakening fingerprint imaging module group and touch awakening apparatus thereof
  • Touch awakening fingerprint imaging module group and touch awakening apparatus thereof

Examples

Experimental program
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Embodiment Construction

[0051] It can be seen from the background art that the touch wake-up device in the prior art has the problem that the processing chip is easily damaged. Combine now image 3 The structural analysis of the shown wake-on-touch device deals with the cause of the chip damage problem:

[0052] When the finger 1 touches the metal protection frame 14, the static electricity of the human body is easily conducted to the metal protection frame 14, and an induced charge is formed on the induction layer 11a through the capacitive structure formed between the metal protection frame 14 and the induction layer 11a.

[0053] In the prior art, the electrostatic discharge protector 13 is directly connected to the induction layer 11a. Although the induced charge on the induction layer 11a can be conducted to the ground terminal through the electrostatic discharge protector 13 and released, it cannot reduce the metal Protect the static electricity of the human body on the frame 14.

[0054] Thr...

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Abstract

The present invention provides a touch awakening fingerprint imaging module group and a touch awakening apparatus thereof. The fingerprint imaging module group comprises a protection layer, a protector connected to the protection layer, a sensing layer and a processing chip connected to the sensing layer. According to the present invention, human body static electricity is obtained by the protection layer and is discharged to a ground end by the protector connected to the protection layer. Induced charge formed on the sensing layer by a capacitor structure formed by the protection layer and the sensing layer can be effectively reduced, so that a discharge current from the sensing layer to the processing chip can be effectively reduced, thereby reducing possibility of damaging the processing chip by the discharge current and effectively protecting the processing chip.

Description

technical field [0001] The invention relates to the field of fingerprint identification, in particular to a wake-up by touch fingerprint imaging module and a wake-up by touch device. Background technique [0002] With the development of semiconductor technology, mobile terminal devices have more and more functions. With the powerful functions of mobile terminal equipment, the energy consumption of the equipment also increases. However, due to the limited battery capacity of the mobile terminal, in order to reduce the energy consumption of the fingerprint imaging module and prolong the standby time, power management has always been a very important part of the development of the mobile terminal. [0003] Wake-up technology is a power management method in the prior art: when the device is not in use, the device is put into sleep mode to reduce power consumption; Convert to working state. [0004] refer to Figure 1 to Figure 3 , shows a schematic structural diagram of a con...

Claims

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Application Information

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IPC IPC(8): G06F3/041G06F3/044G06K9/00
Inventor 李康朱虹凌严
Owner SHANGHAI OXI TECH
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