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公开(公告)号：US20240210596A1
公开(公告)日：2024-06-27
申请号：US18510845
申请日：2023-11-16
发明人： Jin Woo YI , Sung Jun LEE , Tae Kyung LEE , Sung Sun KIM , Young Kyo JUNG
IPC分类号： G02B1/11
CPC分类号： G02B1/11
摘要： A lens includes a lens unit; an anti-reflective (AR) coating layer, disposed on one surface of the lens unit, including a first coating layer and a second coating layer alternately stacked one or more times, wherein a refractive index of the first coating layer is different from a refractive index of the second coating layer; and an intermediate layer, disposed between the lens unit and the AR coating layer, is formed of a same material as the first coating layer or the second coating layer. The intermediate layer is disposed on the lens unit by chemical vapor deposition (CVD).
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公开(公告)号：US20230350104A1
公开(公告)日：2023-11-02
申请号：US18101396
申请日：2023-01-25
发明人： Tae Kyung LEE , Sang Kee YOON , Jin Woo YI , Joung Hun KIM , Jae Goon AUM
CPC分类号： G02B1/18 , G02B1/11 , G02B5/0221
摘要： A lens includes a lens unit including an uneven surface structure, and an uneven layer formed on at least a portion of the uneven surface structure of the lens unit and comprising an uneven surface structure. The uneven surface structure of the lens unit and the uneven surface structure of the uneven layer have different shapes.
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公开(公告)号：US20230208381A1
公开(公告)日：2023-06-29
申请号：US17994706
申请日：2022-11-28
发明人： Moon Chul LEE , Kwang Su KIM , Jin Woo YI , Jae Hyoung GIL , Yong Suk KIM , Dong Hyun PARK
CPC分类号： H03H9/02015 , H03H9/132 , H03H9/131 , H03H9/54
摘要： A bulk acoustic resonator includes a substrate, a frequency control layer changing a resonant frequency or antiresonant frequency of the bulk acoustic resonator according to a thickness of the frequency control layer, a piezoelectric layer disposed between the frequency control layer and the substrate, a first electrode disposed between the piezoelectric layer and the substrate, a second electrode disposed between the piezoelectric layer and the frequency control layer, a metal layer connected to the first electrode or the second electrode, and a protective layer disposed between the second electrode and the frequency control layer, wherein the frequency control layer covers a larger area than that of the protective layer.
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公开(公告)号：US20210359662A1
公开(公告)日：2021-11-18
申请号：US16953431
申请日：2020-11-20
发明人： Tae Kyung LEE , Yong Suk KIM , Sang Kee YOON , Chang Hyun LIM , Tae Hun LEE , Jin Woo YI
摘要： A bulk-acoustic wave resonator includes a resonator, including a first electrode, a piezoelectric layer, and a second electrode sequentially stacked on a substrate; and an insertion layer disposed below the piezoelectric layer, and configured to partially elevate the piezoelectric layer and the second electrode, wherein the insertion layer may be formed of a material containing silicon (Si), oxygen (O), and nitrogen (N).
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公开(公告)号：US20180062619A1
公开(公告)日：2018-03-01
申请号：US15673498
申请日：2017-08-10
发明人： Jin Woo YI , Chan Hee PARK , Kwang Su KIM , Sang Jin KIM
CPC分类号： H03H9/54 , H03H3/02 , H03H9/02007 , H03H9/1014 , H03H9/105 , H03H9/133 , H03H9/173 , H03H9/174 , H03H2003/021 , H03H2003/023
摘要： A bulk acoustic filter device includes: a substrate including a through hole formed by a first recess and a second recess adjacent to the first recess; a membrane layer forming a cavity with the substrate; a filter including a lower electrode disposed on the membrane layer, a piezoelectric layer disposed to cover a portion of the lower electrode, and an upper electrode formed to cover a portion of the piezoelectric layer; and an electrode connecting member disposed in the substrate, and connected to either one of the lower electrode and the upper electrode, wherein the electrode connecting member includes an insertion electrode disposed in the first recess, and a via electrode connected to the insertion electrode, and disposed on an inner peripheral surface of the second recess and a surface of the substrate.
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