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    COMPOSITE SUBSTRATE FOR ELECTRO-OPTICAL ELEMENT AND PRODUCTION METHOD THEREFOR
    1.
    发明公开
    COMPOSITE SUBSTRATE FOR ELECTRO-OPTICAL ELEMENT AND PRODUCTION METHOD THEREFOR 审中-公开

    公开(公告)号：EP3879336A1

    公开(公告)日：2021-09-15

    申请号：EP19881111.9

    申请日：2019-07-11

    申请人： NGK Insulators, Ltd.

    发明人： UNO, Yudai ,  TAI, Tomoyoshi ,  KONDO, Jungo

    IPC分类号： G02F1/03 ,  G02B6/12 ,  G02F1/035

    摘要： A composite substrate for an electro-optic element is disclosed. The composite substrate includes: an electro-optic crystal substrate having an electro-optic effect; a low-refractive-index layer being in contact with the electro-optic crystal substrate and having a lower refractive index than the electro-optical crystal substrate; and a support substrate bonded to the low-refractive-index layer at least via a bonding layer. A plurality of interfaces located between the low-refractive-index layer and the support substrate includes at least one rough interface having a roughness that is larger than a roughness of an interface between the electro-optic crystal substrate and the low-refractive-index layer.

    COMPOSITE SUBSTRATE
    3.
    发明公开
    COMPOSITE SUBSTRATE 审中-公开
    复合材料基材

    公开(公告)号：EP2863545A1

    公开(公告)日：2015-04-22

    申请号：EP13804294.0

    申请日：2013-06-11

    申请人： NGK Insulators, Ltd.

    发明人： HORI, Yuji ,  TAI, Tomoyoshi ,  IDE, Akiyoshi ,  MIYAZAWA, Sugio

    IPC分类号： H03H9/145

    CPC分类号： H01L41/081 ,  H01L41/053 ,  H01L41/1873 ,  H01L41/313 ,  H03H9/02574 ,  H03H9/25

    摘要： A composite substrate 10 includes a supporting substrate 12 and a piezoelectric substrate 14 which are bonded to each other. In this embodiment, the supporting substrate 12 and the piezoelectric substrate 14 are bonded to each other by an adhesive layer 16. In the composite substrate 10, since the supporting substrate 12 is composed of a translucent alumina ceramic, alignment is easily performed during FCB compared with the case where the supporting substrate is composed of an opaque ceramic. Furthermore, preferably, the linear transmittance and the total light transmittance from the front of the supporting substrate 12 in the visible light range (360 to 750 nm) are 10% or more and 70% or more, respectively.

    摘要翻译： 复合衬底10包括彼此接合的支撑衬底12和压电衬底14。 在该实施例中，支撑基板12和压电基板14通过粘合层16彼此粘合。在复合基板10中，由于支撑基板12由透光氧化铝陶瓷组成，所以在FCB比较期间容易进行对准 在支撑衬底由不透明陶瓷组成的情况下。 此外，优选地，在可见光范围（360至750nm）中，来自支撑基板12前方的线性透射率和全光线透过率分别为10％以上且70％以上。

    COMPOSITE SUBSTRATE
    4.
    发明公开
    COMPOSITE SUBSTRATE 有权
    复合材料基材

    公开(公告)号：EP2787638A1

    公开(公告)日：2014-10-08

    申请号：EP13840126.0

    申请日：2013-11-11

    申请人： NGK Insulators, Ltd. ,  NGK Ceramic Device Co., Ltd.

    发明人： TAI, Tomoyoshi ,  IWASAKI, Yasunori ,  HORI, Yuji ,  YAMADERA, Takahiro ,  HATTORI, Ryosuke ,  SUZUKI, Kengo

    IPC分类号： H03H9/25 ,  H03H9/145

    CPC分类号： H01L41/0838 ,  H01L41/053 ,  H01L41/312 ,  H03H9/02574

    摘要： A composite substrate according to the present invention includes a piezoelectric substrate that is a single-crystal lithium tantalate or lithium niobate substrate, a support substrate that is a single-crystal silicon substrate, and an amorphous layer joining together the piezoelectric substrate and the support substrate. The amorphous layer contains 3 to 14 atomic percent of argon. The amorphous layer includes, in order from the piezoelectric substrate toward the composite substrate, a first layer, a second layer, and a third layer. The first layer contains a larger amount of a constituent element (such as tantalum) of the piezoelectric substrate than the second and third layers. The third layer contains a larger amount of a constituent element (silicon) of the support substrate than the first and second layers. The second layer contains a larger amount of argon than the first and third layers.

    摘要翻译： 根据本发明的复合基板包括：作为单晶钽酸锂或铌酸锂基板的压电基板，作为单晶硅基板的支撑基板和将压电基板和支撑基板接合在一起的非晶层 。 无定形层含有3至14原子百分比的氩。 非晶层从压电基板朝向复合基板依次包括第一层，第二层和第三层。 第一层含有比第二层和第三层更大量的压电基片的组成元素（如钽）。 与第一层和第二层相比，第三层含有更多的支撑基板的构成元素（硅）。 第二层含有比第一层和第三层更大量的氩。

    COMPOSITE SUBSTRATE, ELASTIC SURFACE WAVE DEVICE, AND METHOD FOR PRODUCING COMPOSITE SUBSTRATE
    5.
    发明公开
    COMPOSITE SUBSTRATE, ELASTIC SURFACE WAVE DEVICE, AND METHOD FOR PRODUCING COMPOSITE SUBSTRATE 有权
    复合基材，为了制造基片可弯曲声表面波器件和方法

    公开(公告)号：EP2736169A1

    公开(公告)日：2014-05-28

    申请号：EP13821781.5

    申请日：2013-07-12

    申请人： NGK Insulators, Ltd.

    发明人： HORI, Yuji ,  HATTORI, Ryosuke ,  TAI, Tomoyoshi

    IPC分类号： H03H9/145 ,  C04B37/02 ,  H03H3/08 ,  H03H9/25

    CPC分类号： H03H9/64 ,  C04B37/02 ,  H01L41/312 ,  H03H3/02 ,  H03H3/08 ,  H03H9/02574 ,  H03H9/02622 ,  H03H9/02866 ,  H03H9/0538 ,  H03H9/059 ,  H03H9/0595 ,  H03H9/145 ,  H03H9/25

    摘要： In a composite substrate 10, a bonding surface 21 of a piezoelectric substrate 20 is an irregular surface which is partially planarized. The irregular surface which is partially planarized includes a plurality of protrusions 23, each having a flat portion 25 on the tip thereof. The piezoelectric substrate 20 and the supporting substrate 30 are directly bonded to each other at the flat portions 25. By forming the bonding surface 21 into an irregular surface (rough surface) and providing flat portions 25 at the same time, it is possible to secure a sufficient contact area between the piezoelectric substrate 20 and the supporting substrate 30. Accordingly, in the composite substrate in which the piezoelectric substrate 20 and the supporting substrate 30 are bonded to each other, the bonding surface 21 can be roughened and direct bonding can be performed. Furthermore, it is possible to obtain a surface acoustic wave device in which heat resistance is enhanced by performing direct bonding without using an adhesive, and also bulk waves are scattered because of the roughened bonding surface, thus improving characteristics.

    摘要翻译： 在复合基板10，压电基片20的贴合面21是不规则的表面的所有被部分平坦化。 不规则表面的所有其被平坦化部分包括：突起23，其各自具有在前端的平坦部25种的多元性。 压电基板20和支撑基板30在平坦部分25直接键合到彼此通过形成粘贴面21成不规则表面（粗糙表面），并在同一时间提供平坦部25，所以能够确保 压电基板20和支撑基板之间的足够的接触面积30。因此，在将压电基板20和支撑基板30彼此接合的复合衬底，接合表面21可以被粗糙化，直接结合可以是 执行。 进一步，有可能获得其中耐热性的表面声波器件是通过不使用粘接剂上执行直接粘结增强，因此体波被散射由于粗糙接合面，从而提高特性。

    PYROELECTRIC ELEMENT AND MANUFACTURING METHOD THEREFOR
    6.
    发明公开
    PYROELECTRIC ELEMENT AND MANUFACTURING METHOD THEREFOR 有权
    VERFAHREN ZU SEINER HERSTELLUNG PYROELEKTRISCHES ELEMENT

    公开(公告)号：EP2554958A1

    公开(公告)日：2013-02-06

    申请号：EP12750297.9

    申请日：2012-02-16

    申请人： NGK Insulators, Ltd.

    发明人： TAI, Tomoyoshi ,  SUZUKI, Kenji ,  KONDO, Jungo

    IPC分类号： G01J1/02 ,  H01L37/02

    CPC分类号： H01L37/02 ,  G01J5/0225 ,  G01J5/024 ,  G01J5/34 ,  H01L37/025

    摘要： A pyroelectric element 10 includes a pyroelectric substrate 20; a light-receiving section 61 composed of a front-side electrode 41, a back-side electrode 51, and a light-receiving portion 21; and a light-receiving section 62 composed of a front-side electrode 42, a back-side electrode 52, and a light-receiving portion 22. Since the pyroelectric substrate 20 warps in a cavity-facing region 26 opposite a cavity 38, the light-receiving area of the light-receiving sections 61 and 62 is greater than that in the case where there is no warp. It is thus possible to improve detection sensitivity of the pyroelectric element 10 without making the size of the pyroelectric element 10 larger than that in the case where there is no warp.

    摘要翻译： 热电元件10包括热电基板20; 由前侧电极41，背面电极51和受光部21构成的受光部61; 以及由前侧电极42，背面电极52和受光部22构成的受光部62.由于热电基板20在与空腔38相对的朝向腔的区域26内翘曲， 光接收部分61和62的光接收面积大于不存在翘曲的情况。 因此，可以提高热电元件10的检测灵敏度，而不会使热电元件10的尺寸大于不存在翘曲的情况。

    COMPOSITE SUBSTRATE FOR ELECTRO-OPTICAL ELEMENT AND METHOD FOR MANUFACTURING SAME
    7.
    发明公开
    COMPOSITE SUBSTRATE FOR ELECTRO-OPTICAL ELEMENT AND METHOD FOR MANUFACTURING SAME 审中-公开

    公开(公告)号：EP4235277A2

    公开(公告)日：2023-08-30

    申请号：EP23169552.9

    申请日：2018-05-22

    申请人： NGK Insulators, Ltd.

    发明人： TAI, Tomoyoshi ,  KONDO, Jungo

    IPC分类号： G02F1/03

    摘要： A composite substrate for an electro-optic element is disclosed. The composite substrate includes: an electro-optic crystal substrate having an electro-optic effect; a support substrate bonded to the electro-optic crystal substrate at least via an amorphous layer; and a low-refractive-index layer located between the electro-optic crystal substrate and the amorphous layer and having a lower refractive index than the electro-optical crystal substrate. The amorphous layer is constituted of one or more elements that constitute a layer or a substrate contacting the amorphous layer from one side and one or more elements that constitute a layer or a substrate contacting the amorphous layer from another side and has a thickness of 0.1 nanometer or more and 100 nanometers or less.

    COMPOSITE SUBSTRATE AND MANUFACTURING M ETHOD THEREOF
    10.
    发明公开
    COMPOSITE SUBSTRATE AND MANUFACTURING M ETHOD THEREOF 有权
    VERBUNDSUBSTRAT UND HERSTELLUNGSVERFAHRENDAFÜR

    公开(公告)号：EP2787637A1

    公开(公告)日：2014-10-08

    申请号：EP13840125.2

    申请日：2013-11-11

    申请人： NGK Insulators, Ltd. ,  NGK Ceramic Device Co., Ltd.

    发明人： HORI, Yuji ,  TAI, Tomoyoshi ,  IWASAKI, Yasunori ,  YAMADERA, Takahiro ,  HATTORI, Ryosuke ,  SUZUKI, Kengo

    IPC分类号： H03H9/25 ,  H03H3/08

    CPC分类号： H01L41/0838 ,  H01L41/312 ,  H03H9/02574

    摘要： The present invention provides a composite substrate comprising a piezoelectric substrate that is a single-crystal lithium tantalate or lithium niobate substrate, a support substrate that is a single-crystal silicon substrate, and an amorphous layer containing argon and joining together the piezoelectric substrate and the support substrate. The amorphous layer includes, in order from the piezoelectric substrate toward the composite substrate, a first layer, a second layer, and a third layer. The first layer contains a larger amount of a constituent element of the piezoelectric substrate than the second and third layers, the third layer contains a larger amount of a constituent element of the support substrate than the first and second layers, and the second layer contains a larger amount of argon than the first and third layers.

    摘要翻译： 本发明提供一种复合基板，其包括作为单晶钽酸锂或铌酸锂基板的压电基板，作为单晶硅基板的支撑基板和含有氩的非晶层并将压​​电基板与 支撑基板。 从压电基板向复合基板依次包括第一层，第二层和第三层。 第一层包含比第二层和第三层更大量的压电基板的构成元件，第三层包含比第一层和第二层更大量的支撑衬底的构成元件，并且第二层包含 比第一和第三层更大量的氩。