Ultrasonic fingerprint identification module and method of making the same
A fingerprint recognition module and production method technology, which are applied in character and pattern recognition, acquisition/organization of fingerprints/palmprints, and print image collection, etc., can solve problems such as poor performance and low production yield.
Active Publication Date: 2021-07-30
RECO TECH CHENGDU CO LTD
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Problems solved by technology
However, the performance of the traditional ultrasonic fingerprint recognition module is poor, and the production yield is low
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[0040] In order to make the above objects, features, and advantages of the present invention, the specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to fully understand the present invention. However, the present invention can be implemented in many other fails there are many otherwise described herein, and those skilled in the art can be similarly improved without departing from the connotation of the present invention, and thus the present invention is not limited by the specific embodiments disclosed below.
[0041] It should be noted that when the element is referred to as "fixed to" another element, it can be directly in another element or may also exist. When a component is considered to be "connected" another element, it may be directly connected to another element or may always exist in the center element.
[0042] All techniques and sc...
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The invention relates to an ultrasonic fingerprint identification module and a manufacturing method thereof. The ultrasonic fingerprint identification module includes: a substrate; a piezoelectric layer disposed on the substrate, the surface of the piezoelectric layer away from the substrate is a functional surface, and a first step groove is opened on the edge of the functional surface; a conductive layer is disposed on the functional surface The main body part, the first filling part provided at the first stepped groove, and the connecting part provided on the surface of the substrate provided with the piezoelectric layer, the main body part, the first filling part and the connecting part are sequentially integrally formed, and the connecting part is used for connecting with The power supply line is connected; the electrode layer is arranged on the surface of the main body away from the substrate. In the above-mentioned ultrasonic fingerprint identification module, the first stepped groove can ease the climbing range of the conductive layer, reduce the risk of disconnection of the conductive layer, and open the first stepped groove while removing the horns, so as to avoid the horns from increasing the climbing of the conductive layer amplitude, reducing the risk of disconnection of the conductive layer. Therefore, the above-mentioned ultrasonic fingerprint identification module has better performance and higher production yield.
Description
Technical field [0001] The present invention relates to the field of fingerprint identification, and in particular, to an ultrasonic fingerprint identification module and a method of fabricating it. Background technique [0002] Mobile phones, flat panels are equipped with fingerprint recognition modules to make users easily and safely identified identity. As the electronic device gradually moves toward the full screen, it is necessary to put the fingerprint identification module in the screen, and people have begun to study the ultrasonic fingerprint identification module that can be built into the screen. However, the traditional ultrasonic fingerprint recognition module is poor, and the production is low. Inventive content [0003] Based on this, it is necessary to provide a good performance of ultrasonic fingerprint recognition modules and a high improvement method thereof. [0004] Ultrasonic fingerprint recognition module, including: [0005] Substrate; [0006] The piezoe...
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IPC IPC(8): G06K9/00
CPCG06V40/1306
Inventor 黄世杰卢宏杰谢佩君
Owner RECO TECH CHENGDU CO LTD