WO2024057268 - ACOUSTIC WAVE FILTER HAVING A PIEZOELECTRIC LAYER WITH INTERDIGITAL TRANSDUCERS, AND PROCESS FOR ITS MANUFACTURE
National phase entry is expected:
Publication Number
WO/2024/057268
Publication Date
21.03.2024
International Application No.
PCT/IB2023/059160
International Filing Date
14.09.2023
Title **
[English]
ACOUSTIC WAVE FILTER HAVING A PIEZOELECTRIC LAYER WITH INTERDIGITAL TRANSDUCERS, AND PROCESS FOR ITS MANUFACTURE
[French]
FILTRE À ONDES ACOUSTIQUES AYANT UNE COUCHE PIÉZOÉLECTRIQUE AVEC DES TRANSDUCTEURS INTERDIGITÉS, ET SON PROCÉDÉ DE FABRICATION
Applicants **
SHENZHEN NEWSONIC TECHNOLOGIES CO., LTD.
Inventors
WENG, Guojun
TANG, Gongbin
Priority Data
17/933,076
16.09.2022
US
Application details
| Total Number of Claims/PCT | * |
| Number of Independent Claims | * |
| Number of Priorities | * |
| Number of Multi-Dependent Claims | * |
| Number of Drawings | * |
| Pages for Publication | * |
| Number of Pages with Drawings | * |
| Pages of Specification | * |
| * | |
| Number of Office Actions | * |
| * | |
International Searching Authority |
EPO
* |
| Recordal of a Change of the Applicant's Name/Address |
Change of Applicant's Name and Address
* |
| Type of Assignment |
The Standard Agent's Assignment
* |
| Applicant's Legal Status |
Legal Entity
* |
| * | |
| * | |
| * | |
| * | |
| * | |
| Entry into National Phase under |
Chapter I
* |
| Patent Delivery |
Send the Letters Patent by Courier
* |
| Translation |
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* The data is based on automatic recognition. Please verify and amend if necessary.
** IP-Coster compiles data from publicly available sources. If this data includes your personal information, you can contact us to request its removal.
Quotation for National Phase entry
| Country | Stages | Total | |
|---|---|---|---|
| China | Filing, Examination, Granting | 1976 | |
| EPO | Filing, Examination, Granting | 8430 | |
| Japan | Filing, Examination, Granting | 2046 | |
| South Korea | Filing, Examination, Granting | 1803 | |
| USA | Filing, Examination, Granting | 4740 |
Total:
18,995
The term for entry into the National Phase has expired. This quotation is for informational purposes only
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Abstract[English]
A surface acoustic wave, SAW, filter includes a bottom substrate (210), a piezoelectric layer (140) disposed above the bottom substrate and having a bottom surface (140a) facing the bottom substrate and a top surface (140b) opposite to the bottom surface, a cavity (500) disposed below the piezoelectric layer, a first interdigital transducer, IDT, (133) disposed on the bottom surface of the piezoelectric layer, and a second IDT (163) disposed on the top surface of the piezoelectric layer. An interdigital portion of the first IDT is exposed in the cavity. An interdigital portion of the second IDT is vertically aligned with the interdigital portion of the first IDT.[French]
La présente divulgation concerne un filtre à ondes acoustiques de surface, SAW, qui comprend un substrat inférieur (210), une couche piézoélectrique (140) disposée au-dessus du substrat inférieur et ayant une surface inférieure (140a) faisant face au substrat inférieur et une surface supérieure (140b) opposée à la surface inférieure, une cavité (500) disposée au-dessous de la couche piézoélectrique, un premier transducteur interdigité, IDT, (133) disposé sur la surface inférieure de la couche piézoélectrique, et un deuxième IDT (163) disposé sur la surface supérieure de la couche piézoélectrique. Une partie interdigitée du premier IDT est exposée dans la cavité. Une partie interdigitée du deuxième IDT est alignée verticalement avec la partie interdigitée du premier IDT.