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公开(公告)号：US10305446B2
公开(公告)日：2019-05-28
申请号：US15179248
申请日：2016-06-10
发明人： Jae Sang Lee , Ho Phil Jung , Sung Wook Kim , Tae Joon Park , In Young Kang , Dong Joon Oh , Je Hong Kyoung , Kyo Yeol Lee , Jong Pil Lee , Seung Mo Lim
摘要： A piezoelectric oscillator, and method of making the same, includes an oscillation substrate comprising an oscillating part and a surrounding part, wherein the surrounding part is thinner than the oscillating part, and oscillating electrodes disposed on an upper surface and a lower surface of the oscillating part. The oscillation substrate is configured according to H=400.59×S+1.75±1.5, wherein H=100×(T2/T1) and S=T2/(L1−L2), wherein L1 represents an entire length of the oscillation substrate, L2 represents a length of the oscillating part, T1 represents a thickness of the oscillating part, and T2 represents a step height between the oscillating part and the surrounding part.
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公开(公告)号：US12057822B2
公开(公告)日：2024-08-06
申请号：US17307055
申请日：2021-05-04
发明人： Sang Uk Son , Sung Wook Kim , Won Han , Jong Woon Kim , Jeong Hoon Ryou , Sang Heon Han
CPC分类号： H03H9/173 , H03H9/02015 , H03H9/02157 , H03H9/131 , H03H9/132
摘要： A bulk acoustic resonator includes a first electrode disposed on an upper side of a substrate, a piezoelectric layer disposed on an upper surface of the first electrode, and a second electrode disposed on an upper surface of the piezoelectric layer, wherein an upper surface of at least one of the first electrode and the second electrode has a recess region, wherein a depth of the recess region is D, a width of the recess region is W, and a resonance frequency is F, and ln is a natural logarithm, and wherein [{ln(D*W)}/(−0.59*F)] is [[ln{0.008 (μm)2}]/{−0.59*(3.5 GHz)}] or more and [[ln{0.022 (μm)2}]/{−0.59*(3.5 GHz)}] or less.
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公开(公告)号：US11558027B2
公开(公告)日：2023-01-17
申请号：US16362743
申请日：2019-03-25
发明人： Dae Hun Jeong , Sung Wook Kim , Sang Uk Son , Sang Heon Han , Won Han
摘要： A bulk-acoustic wave resonator includes: a substrate; a membrane layer forming a cavity with the substrate; a lower electrode disposed on the membrane layer; an insertion layer disposed to cover at least a portion of the lower electrode; a piezoelectric layer disposed on the lower electrode to cover the insertion layer; and an upper electrode at least partially disposed on the piezoelectric layer, wherein the upper electrode includes a reflection groove disposed on the insertion layer.
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公开(公告)号：US11558025B2
公开(公告)日：2023-01-17
申请号：US17074978
申请日：2020-10-20
发明人： Jeong Hoon Ryou , Sang Uk Son , Sung Wook Kim , Won Han , Dae Hun Jeong , Sang Heon Han
摘要： A bulk-acoustic wave resonator includes: a first electrode; a piezoelectric layer at least partially disposed on an upper portion of the first electrode; and a second electrode disposed to cover at least a portion of the piezoelectric layer. The second electrode includes a frame disposed at an edge of an active region of the bulk-acoustic wave resonator, and the first electrode, the piezoelectric layer and the second electrode are disposed to overlap one another at the edge of the active region. The frame includes a wall disposed at the edge of the active region and a trench formed on an internal side of the wall. An internal boundary line of the trench has a concave-convex shape in a plane parallel to an upper surface of the frame.
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公开(公告)号：US10200011B2
公开(公告)日：2019-02-05
申请号：US15153158
申请日：2016-05-12
发明人： Dong Woo Lee , Sung Wook Kim , Seung Mo Lim , Jong Pil Lee
IPC分类号： H01L41/09 , H01L41/047 , H03H9/10
摘要： A crystal oscillator package includes a crystal piece configured to vibrate in response to an electrical signal, a first vibrating part protruding from an upper surface of the crystal piece, a second vibrating part protruding from a lower surface of the crystal piece, a first exciting electrode disposed on the first vibrating part, a second exciting electrode disposed on the second vibrating part, and protrusions extending from an end portion of the lower surface of the crystal piece. The protrusions include two or more stages.
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公开(公告)号：US20220239278A1
公开(公告)日：2022-07-28
申请号：US17307055
申请日：2021-05-04
发明人： Sang Uk Son , Sung Wook Kim , Won Han , Jong Woon Kim , Jeong Hoon Ryou , Sang Heon Han
摘要： A bulk acoustic resonator includes a first electrode disposed on an upper side of a substrate, a piezoelectric layer disposed on an upper surface of the first electrode, and a second electrode disposed on an upper surface of the piezoelectric layer, wherein an upper surface of at least one of the first electrode and the second electrode has a recess region, wherein a depth of the recess region is D, a width of the recess region is W, and a resonance frequency is F, and ln is a natural logarithm, and wherein [{ln(D*W)}/(−0.59*F)] is [[ln{0.008 (μm)2}]/{−0.59*(3.5 GHz)}] or more and [[ln{0.022 (μm)2}]/{−0.59*(3.5 GHz)}] or less.
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公开(公告)号：US11595022B2
公开(公告)日：2023-02-28
申请号：US16898835
申请日：2020-06-11
发明人： Won Han , Sung Wook Kim , Dae Hun Jeong , Sang Uk Son , Sang Heon Han , Jeong Hoon Ryou
摘要： A bulk-acoustic wave resonator includes: a substrate; a lower electrode disposed on the substrate; a piezoelectric layer at least partially covering the lower electrode; and an upper electrode at least partially covering the piezoelectric layer. On a surface of the bulk-acoustic wave resonator, a centroid of an active area in which the lower electrode, the piezoelectric layer, and the upper electrode all overlap each other is aligned with a center of a rectangle defining an aspect ratio of the active area. The active area has a shape of a polygon symmetrical with respect to at least one axis passing through the center of the rectangle defining the aspect ratio. The aspect ratio is greater than or equal to 2 and less than or equal to 10.
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公开(公告)号：US09762206B2
公开(公告)日：2017-09-12
申请号：US14616232
申请日：2015-02-06
发明人： Seung Mo Lim , Ho Phil Jung , In Young Kang , Je Hong Kyoung , Sung Wook Kim , Jong Pil Lee
IPC分类号： H03H9/19
CPC分类号： H03H9/19
摘要： Embodiments of the invention provide a quartz crystal vibrator including an AT-cut quartz crystal piece having a long side in an X axis direction and including first and second crystal planes formed on at least one side surface thereof in a Y′ axis direction, and an electrode layer formed on the AT-cut quartz crystal piece.
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公开(公告)号：US09722572B2
公开(公告)日：2017-08-01
申请号：US14508770
申请日：2014-10-07
发明人： Seung Mo Lim , Ho Phil Jung , Won Han , Dong Joon Oh , Sung Wook Kim , Tae Joon Park
摘要： Embodiments of the invention provide a quartz vibrator, including a long side in a Y′ axis direction, a side in the Y′ axis direction including a first crystal face and a second crystal face formed thereon, and another side including an AT-cut quartz piece including a first crystal face and a second crystal face formed thereon and electrode layers formed on the AT-cut quartz piece.
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公开(公告)号：US20140152747A1
公开(公告)日：2014-06-05
申请号：US13772612
申请日：2013-02-21
发明人： Jae Chang LEE , Hwa Sun Lee , Tae Kyung Lee , Byung Hun Kim , Sung Wook Kim
IPC分类号： B41J2/175
CPC分类号： B41J2/14233 , B41J2002/14403
摘要： There is provided an inkjet print head having a stable filter structure. The inkjet print head includes a vibration substrate including a first filter formed therein; and a channel forming substrate including a second filter and a pressure chamber formed therein, the second filter being connected to the first filter.
摘要翻译： 提供了具有稳定的过滤器结构的喷墨打印头。 喷墨打印头包括其中形成有第一过滤器的振动基板; 以及包括形成在其中的第二过滤器和压力室的通道形成衬底，所述第二过滤器连接到所述第一过滤器。
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