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31. 发明公开

EP4099565A1 SURFACE ACOUSTIC WAVE DEVICE 无效
公开(公告)号：EP4099565A1
公开(公告)日：2022-12-07
申请号：EP22167574.7
申请日：2022-04-11
申请人： Wisol Co., Ltd.
发明人： OH, Hae Kwan , SATO, Takahiro , KIHARA, Yoshikazu , KIM, Tae Hyun
IPC分类号： H03H9/02
摘要： A surface acoustic wave device according to the present disclosure includes a support substrate (110_2); an intermediate layer laminated on the support substrate; a piezoelectric layer (130_1) laminated on the intermediate layer; and an IDT electrode formed on the piezoelectric layer, an Euler angle of the support substrate is (-45°±10°, -54°±10°, 180°±30°) and an Euler angle of the piezoelectric layer is (0°±5°, 112.5°±22.5°, 0°±5°) or (0°±5°, -67.5°+22.5°, 0°±5°). By rotating support substrate and piezoelectric layer with respect to each other, the propagation angle of the support substrate is changed allowing suppression of high frequency spurious modes.

32. 发明授权

EP3113369B1 ELECTRONIC DEVICE WITH PARALLEL RECEIVING FILTERING MODULES AND RECEIVING METHOD THEREOF 有权
公开(公告)号：EP3113369B1
公开(公告)日：2019-09-04
申请号：EP16177525.9
申请日：2016-07-01
申请人： Samsung Electronics Co., Ltd. , Wisol Co., Ltd.
发明人： YANG, Dongil , SIM, Sang-Hun , LEE, Jae-Hoon , HWANG, Kyu-Han
IPC分类号： H04B1/00 , H04B1/18 , H03J5/24 , H01Q1/24 , H04B1/16

33. 发明公开

US20240164009A1 ELECTROMAGNETIC WAVE SHIELDING SHEET, FLEXIBLE PRINTED CIRCUIT BOARD ATTACHED WITH ELECTROMAGNETIC WAVE SHIELDING SHEET, AND MANUFACTURING METHOD THEREOF 审中-公开
公开(公告)号：US20240164009A1
公开(公告)日：2024-05-16
申请号：US18088927
申请日：2022-12-27
申请人： WISOL CO., LTD.
发明人： Jung Min KIM , Sang Sub Roh
IPC分类号： H05K1/02 , H05K3/10 , H05K3/22
CPC分类号： H05K1/0216 , H05K1/0277 , H05K3/103 , H05K3/22 , H05K2201/0715
摘要： Provided is an electromagnetic wave shielding sheet, a flexible printed circuit board attached with the electromagnetic wave shielding sheet, and a manufacturing method thereof. The flexible printed circuit board attached with the electromagnetic wave shielding sheet comprises: an electromagnetic wave shielding sheet including a nonwoven fabric having a plated surface and including an adhesive layer adsorbed therein without containing conductive particles, and a nonwoven fabric layer including a first insulating layer formed on the nonwoven fabric; and a flexible printed circuit board attached with the electromagnetic wave shielding sheet, wherein the flexible printed circuit board includes: a base film having a wiring pattern and a ground pattern formed on one side; and a second insulating layer covering the wiring pattern and exposing the ground pattern, and the nonwoven fabric layer having the adhesive layer adsorbed therein is in direct contact with the ground pattern.

34. 发明公开

US20240106415A1 SURFACE ACCOUSTIC WAVE FILTER WITH IMPROVED ATTENUATION 审中-公开
公开(公告)号：US20240106415A1
公开(公告)日：2024-03-28
申请号：US18471465
申请日：2023-09-21
申请人： WISOL CO., LTD.
发明人： Hyung Gon KIM , Tae Hyeong KWON , Jae Seung CHOI
IPC分类号： H03H9/64 , H03H9/02 , H03H9/145 , H03H9/25
CPC分类号： H03H9/6489 , H03H9/02992 , H03H9/14541 , H03H9/25
摘要： Provided is a surface acoustic wave filter with improved attenuation characteristics. The surface acoustic wave filter includes: a plurality of series resonators which are connected between an input terminal and an output terminal; and at least one parallel resonator which connects between a ground terminal and two adjacent series resonators among the plurality of series resonators, wherein at least one of the plurality of series resonators includes: first and second bus bars, which extend parallel to each other in a first direction within first to third areas sequentially arranged on a substrate; a plurality of first interdigital (IDT) transducer electrodes which extend in a second direction perpendicular to the first direction from the first bus bar; and a plurality of second IDT electrodes which extend in the second direction from the second bus bar and are alternately arranged with the plurality of first IDT electrodes, wherein the plurality of first IDT electrodes and the plurality of second IDT electrodes are alternately arranged with a reference period in the second area, are alternately arranged in the first area with a period which gets smaller than a reference period in the direction of one end of the first bus bar, and are alternately arranged in the third area with a period which gets smaller than a reference period in the direction of the other end of the first bus bar.

35. 发明授权

US11437979B2 SAW filter and duplexer 有权
公开(公告)号：US11437979B2
公开(公告)日：2022-09-06
申请号：US16914889
申请日：2020-06-29
申请人： WISOL CO., LTD.
发明人： Young Hun Kim
IPC分类号： H03H9/145 , H03H9/72 , H01Q1/50 , H03H9/64
摘要： A SAW filter is a high-frequency filter including a common terminal, a transmission terminal and a reception terminal through which high-frequency signals are inputted and outputted. The SAW filter includes: a first filter circuit having a first frequency band as a pass band, and connected to the common terminal and the transmission terminal; a second filter circuit having a second frequency band different from the first frequency band as a pass band, and connected to the common terminal and the reception terminal; an antenna connected to the common terminal; and at least one inductor connected in series between the common terminal and the first filter circuit or the second filter circuit.

36. 发明申请

US20210367585A1 DOUBLE MODE SURFACE ACOUSTIC WAVE (SAW) FILTER 有权
公开(公告)号：US20210367585A1
公开(公告)日：2021-11-25
申请号：US17325431
申请日：2021-05-20
申请人： WISOL CO., LTD.
发明人： Kensei Uehara , Takahiro Sato
IPC分类号： H03H9/64 , H03H9/145 , H03H9/02
摘要： A double mode SAW (DMS) filter includes: a plurality of interdigital transducers (IDTs), each having a plurality of Type 1 electrode fingers and a plurality of Type 2 electrode fingers formed on a piezoelectric substrate, wherein one Type 2 electrode finger among the plurality of Type 2 electrode fingers is disposed between two adjacent Type 1 electrode fingers among the plurality of Type 1 electrode fingers, and in a first IDT and a second IDT included in the plurality of IDTs to be adjacent to each other, one Type 1 electrode finger of the second IDT is disposed between two Type 1 electrode fingers of the first IDT. Accordingly, it is possible to provide a DMS filter capable of improving the amount of attenuation in an attenuation band adjacent to the wide band side for the passband and miniaturizing a product by saving space.

37. 发明申请

US20210211114A1 SURFACE ACOUSTIC WAVE DEVICE AND MANUFACTURING METHOD THEREOF 有权
公开(公告)号：US20210211114A1
公开(公告)日：2021-07-08
申请号：US17140249
申请日：2021-01-04
申请人： WISOL CO., LTD.
发明人： Tae Hyun KIM , Chul Hwa LEE , Hun Yong LEE , Kihara YOSHIKAZU
IPC分类号： H03H9/02 , H03H3/08
摘要： A surface acoustic wave (SAW) device according to the present invention includes: a substrate; an intermediate layer formed on an upper surface of the substrate; a piezoelectric layer formed on an upper surface of the intermediate layer; and an inter-digital transducer (IDT) electrode formed on an upper surface of the piezoelectric layer to generate a SAW, wherein an upper portion of the substrate is deformed by a predetermined thickness by ion implantation to form an ion trap layer and the intermediate layer is formed on an upper surface of the ion trap layer.

38. 发明授权

US10389334B2 Saw resonator having negative profile metal structure and manufacturing method thereof 有权
公开(公告)号：US10389334B2
公开(公告)日：2019-08-20
申请号：US15426309
申请日：2017-02-07
申请人： WISOL CO., LTD.
发明人： Chul Hwa Lee , Takahiro Sato
IPC分类号： H03H9/64 , H01L23/34 , H01L23/522 , H01L23/528 , H01L23/532 , H03H3/08 , H03H9/02 , H03H9/145
摘要： A surface acoustic wave resonator includes: a piezoelectric substrate; a plurality of metal structures formed on a top surface of the piezoelectric substrate to have a negative profile; and a temperature compensation layer covering the top surface of the piezoelectric substrate and the plurality of metal structures. The surface acoustic wave resonator according to an embodiment of the present invention has a frequency characteristic insensitive to change of profile and has an effect of having a high semi-resonance Q value characteristic.

39. 发明申请

US20190246213A1 PIEZOELECTRIC SPEAKER UNIT TO BE INSTALLED IN MOBILE TERMINAL 审中-公开
公开(公告)号：US20190246213A1
公开(公告)日：2019-08-08
申请号：US16260727
申请日：2019-01-29
申请人： WISOL CO., LTD.
发明人： Soo Chan LIM , Jung Rae NOH , Yo Sep CHOI
IPC分类号： H04R17/00 , H04R1/02
CPC分类号： H04R17/00 , H04R1/025 , H04R2499/11
摘要： Provided is a piezoelectric speaker unit to be installed in a mobile terminal. The piezoelectric speaker unit includes a plate, a piezoelectric body attached to a central part of the plate, and an edge type support member which supports one surface of the plate along an edge thereof and provides a space therein in which the plate is deformable. Here, at least one opening, which has one side communicating with the space and the other side communicating with the outside of the support member to release sounds generated in the space by oscillation of the plate to the outside of the support member, is formed in the support member.

40. 发明申请

US20190097603A1 AIR-GAP TYPE FILM BULK ACOUSTIC RESONATOR AND METHOD OF MANUFACTURING THE SAME 审中-公开
公开(公告)号：US20190097603A1
公开(公告)日：2019-03-28
申请号：US15970064
申请日：2018-05-03
申请人： WISOL CO., LTD.
发明人： Hoan Jun CHOI
IPC分类号： H03H9/17
CPC分类号： H03H9/173 , H03H3/02 , H03H2003/021
摘要： Disclosed is an air gap type film bulk acoustic resonator (FBAR). The air gap type FBAR includes a substrate which includes an air gap portion in a top surface thereof, a lower electrode formed on the substrate, a piezoelectric layer formed on the lower electrode, and an upper electrode formed on the piezoelectric layer. Here, the lower electrode includes a first lower electrode formed spaced apart from the air gap portion in the substrate and a second lower electrode formed on the substrate to be separated from the first lower electrode by being stacked to surround only a part of a top of the air gap portion in order to form a non-deposition area of the air gap portion.

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