公开(公告)号：USRE44423E1

公开(公告)日：2013-08-13

申请号：US11805861

申请日：2007-05-24

申请人： Hirofumi Kawashima

发明人： Hirofumi Kawashima

IPC分类号： H04L17/00 ,  H01L41/04 ,  H01L41/08

CPC分类号： H03H9/215 ,  H03H3/02 ,  H03H9/1014 ,  H03H9/1021 ,  H03H9/1035 ,  H03H9/105 ,  H03H9/21 ,  H03H2003/026 ,  H03H2003/0492 ,  Y10T29/42 ,  Y10T29/49004 ,  Y10T29/49005 ,  Y10T29/49126 ,  Y10T29/49128 ,  Y10T29/49574

摘要： In a method for manufacturing a quartz crystal unit, a quartz crystal tuning fork resonator is formed by etching a quartz crystal wafer to form a quartz crystal tuning fork base, quartz crystal tuning fork tines connected to the quartz crystal tuning fork base, and a groove having stepped portions in at least one of opposite main surfaces of each of the quartz crystal tuning fork tines. A first electrode is disposed on at least one of the stepped portions of each of the grooves and a second electrode is disposed on each of side surfaces of each of the quartz crystal tuning fork tines. A frequency of oscillation of the quartz crystal tuning fork resonator is adjusted at least twice and in different steps. The quartz crystal tuning fork resonator is then mounted in a case and an open end of the case is covered with a lid.

摘要翻译： 在石英晶体单元的制造方法中，通过蚀刻石英晶片来形成石英音叉谐振器，形成石英音叉基座，与石英音叉基座连接的石英音叉叉齿，以及沟槽 在每个石英音叉齿的至少一个相对的主表面中具有台阶部分。 第一电极设置在每个槽的至少一个阶梯部分上，并且第二电极设置在每个石英晶体分叉齿的每个侧表面上。 将石英音叉谐振器的振荡频率调整至少两次并且在不同的步骤中。 然后将石英晶体音叉谐振器安装在壳体中，壳体的开口端用盖子覆盖。

公开(公告)号：US07768179B2

公开(公告)日：2010-08-03

申请号：US12074828

申请日：2008-03-06

申请人： Hirofumi Kawashima

发明人： Hirofumi Kawashima

IPC分类号： H01L41/08

CPC分类号： H03B5/36 ,  H03B5/366 ,  H03H9/02023 ,  H03H9/02157 ,  H03H9/1021 ,  H03H9/215

摘要： A quartz crystal unit comprising a case having an interior space and a mounting portion in the interior space, and a quartz crystal resonator having a base portion and first and second vibrational arms, the quartz crystal resonator being vibratable in a flexural mode, a capacitance ratio r1 of a fundamental mode of vibration of the quartz crystal resonator being less than a capacitance ratio r2 of a second overtone mode of vibration thereof, a mounting arm protruding from the base portion and extending in a common direction with at least one of the first and second vibrational arms, the mounting arm being mounted on the mounting portion of the case, an electrode being disposed on a surface of the mounting arm and a surface in the interior space of the case, the electrode disposed on the surface of the mounting arm being connected to the electrode disposed on the surface in the interior space of the case.

摘要翻译： 一种石英晶体单元，包括具有内部空间的壳体和内部空间中的安装部分，以及具有基部和第一和第二振动臂的石英晶体谐振器，所述石英晶体谐振器以弯曲模式振动，电容比 所述石英晶体谐振器的基本振动模式的r1小于其第二泛音振动模式的电容比r2，安装臂从所述基部突出并沿着共同的方向延伸，所述安装臂与所述第一和第二振荡模式中的至少一个 第二振动臂，安装臂安装在壳体的安装部分上，电极设置在安装臂的表面和壳体的内部空间中的表面上，设置在安装臂的表面上的电极为 连接到设置在壳体的内部空间中的表面上的电极。

公开(公告)号：US20080282521A1

公开(公告)日：2008-11-20

申请号：US12220026

申请日：2008-07-21

申请人： Hirofumi Kawashima

发明人： Hirofumi Kawashima

IPC分类号： H04R17/00

CPC分类号： H03H3/02 ,  H03H9/0547 ,  H03H9/1021 ,  H03H9/215 ,  H03H2003/026 ,  H03H2003/0492 ,  H04R17/00 ,  H04R31/00 ,  Y10T29/42 ,  Y10T29/49004 ,  Y10T29/49005 ,  Y10T29/49007 ,  Y10T29/4908 ,  Y10T29/49128 ,  Y10T29/49574

摘要： In a method for manufacturing a quartz crystal unit and an electronic apparatus having the quartz crystal unit, each of the quartz crystal unit and the electronic apparatus having the quartz crystal unit, comprising the steps of forming a quartz crystal tuning fork resonator capable of vibrating in a flexural mode of an inverse phase, and having first and second quartz crystal tuning fork tines by etching a quartz crystal wafer; disposing an electrode on each of two of side surfaces of each of the first and second quartz crystal tuning fork tines so that the electrodes on the side surfaces of the first quartz crystal tuning fork tine have an electrical polarity opposite to an electrical polarity of the electrodes on the side surfaces of the second quartz crystal tuning fork tine; mounting the quartz crystal tuning fork resonator on a mounting portion of a case; and connecting a lid to the case to cover an open end thereof, the quartz crystal unit comprising the quartz crystal tuning fork resonator with a piezoelectric constant e′12 within a range of 0.12 C/m2 to 0.19 C/m2 in the absolute value.

摘要翻译： 在石英晶体单元的制造方法和具有石英晶体单元的电子设备中，每个石英晶体单元和具有石英晶体单元的电子设备包括以下步骤：形成能够振动的石英音叉谐振器 反相的弯曲模式，并且通过蚀刻石英晶片具有第一和第二石英晶体分叉齿; 在每个第一和第二石英晶体拨叉尖端的两个侧表面中的每一个上设置电极，使得第一石英晶体音叉齿的侧表面上的电极具有与电极的电极性相反的电极性 在第二石英晶体音叉的侧表面上; 将石英晶体音叉谐振器安装在壳体的安装部分上; 并且将盖连接到壳体以覆盖其开口端，所述石英晶体单元包括在0.12C / m 2范围内的具有压电常数ε'12的石英晶体音叉谐振器， 2至0.19C / m 2的绝对值。

公开(公告)号：US07365478B2

公开(公告)日：2008-04-29

申请号：US11004783

申请日：2004-12-03

申请人： Hirofumi Kawashima

发明人： Hirofumi Kawashima

IPC分类号： H01L41/80

CPC分类号： H03H9/215

摘要： A piezoelectric crystal tuning fork resonator comprises a tuning fork base and a plurality of tuning fork tines connected to the tuning fork base, each of the tuning fork tines having opposite main surfaces and side surfaces, a groove having a plurality of stepped portions being formed in at least one of the opposite main surfaces of each of the tuning fork tines, a plurality of first electrodes being disposed on the stepped portions of the groove in at least one of the opposite main surfaces of each of the tuning fork tines, a plurality of second electrodes being disposed on the side surfaces of each of the tuning fork tines, the piezoelectric crystal tuning fork resonator comprising three electrode terminals and each of the three electrode terminals having a different electrical polarity.

摘要翻译： 一种压电晶体音叉谐振器，包括音叉基座和连接到音叉基座的多个音叉齿，每个音叉齿具有相对的主表面和侧表面，具有多个阶梯部分的槽形成在 每个音叉齿的相对的主表面中的至少一个，多个第一电极设置在每个音叉齿的相对的主表面中的至少一个的凹槽的台阶部分上，多个 第二电极设置在每个音叉齿的侧面上，压电晶体音叉谐振器包括三个电极端子，三个电极端子中的每一个具有不同的电极性。

公开(公告)号：US20070257741A1

公开(公告)日：2007-11-08

申请号：US11821753

申请日：2007-06-25

申请人： Hirofumi Kawashima

发明人： Hirofumi Kawashima

IPC分类号： H03B5/30

CPC分类号： H03H9/1021 ,  H03B5/32 ,  H03H3/02 ,  H03H9/0547 ,  H03H9/215 ,  H03H2003/026 ,  H03H2003/0492 ,  H04R17/00 ,  H04R31/00 ,  Y10T29/42 ,  Y10T29/49004 ,  Y10T29/49005 ,  Y10T29/4913 ,  Y10T29/49574

摘要： An electronic apparatus comprises at least one quartz crystal oscillator comprised of a quartz crystal oscillating circuit having a quartz crystal resonator, an amplifier, at least one resistor, and capacitors. The quartz crystal resonator comprises a quartz crystal tuning fork resonator having a quartz crystal tuning fork base, quartz crystal tuning fork tines connected to the quartz crystal tuning fork base, and at least one groove formed in at least one of opposite main surfaces of the quartz crystal tuning fork tines. A length of the at least one groove formed in at least one of the opposite main surfaces of the quartz crystal tuning fork tines is within a range of 40% to 80% of a length of the quartz crystal tuning fork tines.

摘要翻译： 电子设备包括至少一个由具有石英晶体谐振器的石英振荡电路，放大器，至少一个电阻器和电容器组成的石英晶体振荡器。 石英晶体谐振器包括具有石英晶体音叉基座的石英音叉谐振器，与石英音叉基座连接的石英音叉叉齿，以及形成在石英的相对主表面中的至少一个的至少一个凹槽 水晶音叉。 在石英音叉齿的相对的主表面的至少一个中形成的至少一个槽的长度在石英音叉齿的长度的40％至80％的范围内。

公开(公告)号：US20060284694A1

公开(公告)日：2006-12-21

申请号：US11511679

申请日：2006-08-29

申请人： Hirofumi Kawashima

发明人： Hirofumi Kawashima

IPC分类号： H03B5/32

CPC分类号： H03B5/32 ,  H03H3/02 ,  H03H9/0547 ,  H03H9/1021 ,  H03H9/21 ,  H03H9/215 ,  H03H2003/026 ,  H03H2003/0492 ,  H04R17/00 ,  H04R31/00 ,  Y10T29/42 ,  Y10T29/49005 ,  Y10T29/49007 ,  Y10T29/4908 ,  Y10T29/49133 ,  Y10T29/49135

摘要： In an electronic apparatus comprising a digital display portion and first and second oscillators comprising first and second oscillating circuits, each of the first and second oscillating circuits having a resonator, an amplifier, a plurality of capacitors, and at least one resistor, a mode of vibration of the resonator of the first oscillating circuit being the same as that of the resonator of the second oscillating circuit, an output signal being output from each of the first and second oscillating circuits, the output signal of one of the first and second oscillating circuits being a clock signal for use in operation of the electronic apparatus to display time information at the digital display portion.

公开(公告)号：US20060255882A1

公开(公告)日：2006-11-16

申请号：US11398876

申请日：2006-04-06

申请人： Hirofumi Kawashima

发明人： Hirofumi Kawashima

IPC分类号： H03H9/21

CPC分类号： H03H9/1021 ,  H03B5/32 ,  H03H3/02 ,  H03H9/0547 ,  H03H9/215 ,  H03H2003/026 ,  H03H2003/0492 ,  H04R17/00 ,  H04R31/00 ,  Y10T29/42 ,  Y10T29/49004 ,  Y10T29/49005 ,  Y10T29/4913 ,  Y10T29/49574

摘要： The electronic apparatus comprises a display portion and a quartz crystal oscillator at least, and said electronic apparatus comprises at least one quartz crystal oscillator. Also, the at least one oscillator comprises a quartz crystal oscillating circuit comprising an amplification circuit and a feedback circuit. The feedback circuit is constructed by a flexural mode, quartz crystal tuning fork resonator or a length-extensional mode quartz crystal resonator and for example, the quartz crystal tuning fork resonator comprising tuning fork tines and tuning fork base that are formed integrally, is shown with novel shape and electrode construction. Also, the quartz crystal tuning fork resonator, capable of vibrating in a fundamental mode and having a high frequency stability can be provided with a small series resistance and a high quality factor, even when the tuning fork resonator is miniaturized. In addition, from a relationship of an amplification rate and a feedback rate, an output signal of the quartz crystal oscillating circuit having an oscillation frequency of the fundamental mode vibration for the quartz crystal tuning fork resonator can be provided with the high frequency stability.

摘要翻译： 电子设备至少包括显示部分和石英晶体振荡器，并且所述电子设备包括至少一个石英晶体振荡器。 而且，至少一个振荡器包括一个石英晶体振荡电路，它包括一个放大电路和一个反馈电路。 反馈电路由弯曲模式，石英音叉谐振器或长度拉伸模式石英晶体谐振器构成，例如，包括音叉形成的整流的音叉叉形音叉和音叉基座，例如， 新颖的形状和电极结构。 此外，即使音叉谐振器小型化，也能够以基波模式振动并且具有高频稳定性的石英晶体音叉谐振器具有小的串联电阻和高品质因数。 此外，根据放大率和反馈率的关系，可以提供具有石英音叉谐振器的基模振荡的振荡频率的石英振荡电路的输出信号，具有高频稳定性。

公开(公告)号：US20050184628A1

公开(公告)日：2005-08-25

申请号：US11109037

申请日：2005-04-19

申请人： Hirofumi Kawashima

发明人： Hirofumi Kawashima

IPC分类号： H03H9/10 ,  H03H9/21 ,  H03H9/215

CPC分类号： H03H9/0547 ,  H03H9/1021 ,  H03H9/215 ,  H03H2003/026 ,  H03H2003/0492

摘要： The electronic apparatus comprises a display portion and a quartz crystal oscillator at least, and said electronic apparatus comprises at least two quartz crystal oscillators. Also, each of two quartz crystal oscillators of the at least two oscillators comprises a quartz crystal oscillating circuit having an amplification circuit and a feedback circuit. The feedback circuit is constructed by a flexural mode, quartz crystal tuning fork resonator or a width-extensional mode quartz crystal resonator or a thickness shear mode quartz crystal resonator and for example, the quartz crystal tuning fork resonator comprising tuning fork tines and tuning fork base that are formed integrally, is shown with novel shape and electrode construction. Also, the quartz crystal tuning fork resonator, capable of vibrating in a fundamental mode and having a high frequency stability can be provided with a small series resistance and a high quality factor, even when the tuning fork resonator is miniaturized. This is accomplished by grooves, groove dimensions and electrode construction on the tuning fork tines and/or tuning fork base of the quartz crystal tuning fork resonator. In addition, from a relationship of an amplification rate and a feedback rate, the quartz crystal oscillator having an output signal of a frequency of the fundamental mode vibration for the quartz crystal tuning fork resonator can be provided with the high frequency stability.

摘要翻译： 电子设备至少包括显示部分和石英晶体振荡器，并且所述电子设备包括至少两个石英晶体振荡器。 此外，至少两个振荡器的两个石英晶体振荡器中的每一个包括具有放大电路和反馈电路的石英晶体振荡电路。 反馈电路由弯曲模式，石英音叉谐振器或宽度延伸模式石英晶体谐振器或厚度剪切模式石英晶体谐振器构成，例如，石英晶体音叉谐振器包括音叉叉和音叉基座 整体形成，具有新颖的形状和电极结构。 此外，即使音叉谐振器小型化，也能够以基波模式振动并且具有高频稳定性的石英晶体音叉谐振器具有小的串联电阻和高品质因数。 这通过在石英音叉谐振器的音叉和/或音叉基座上的槽，槽尺寸和电极结构来实现。 此外，从放大率和反馈率的关系来看，具有高频稳定性的具有石英音叉谐振器的基模振动频率的输出信号的石英晶体振荡器。

公开(公告)号：US20050134154A1

公开(公告)日：2005-06-23

申请号：US11004783

申请日：2004-12-03

申请人： Hirofumi Kawashima

发明人： Hirofumi Kawashima

IPC分类号： H03H9/21 ,  H03H9/215

CPC分类号： H03H9/215

摘要： A piezoelectric crystal tuning fork resonator comprises a tuning fork base and a plurality of tuning fork tines connected to the tuning fork base, each of the tuning fork tines having opposite main surfaces and side surfaces, a groove having a plurality of stepped portions being formed in at least one of the opposite main surfaces of each of the tuning fork tines, a plurality of first electrodes being disposed on the stepped portions of the groove in at least one of the opposite main surfaces of each of the tuning fork tines, a plurality of second electrodes being disposed on the side surfaces of each of the tuning fork tines, the piezoelectric crystal tuning fork resonator comprising three electrode terminals and each of the three electrode terminals having a different electrical polarity.

摘要翻译： 一种压电晶体音叉谐振器，包括音叉基座和连接到音叉基座的多个音叉齿，每个音叉齿具有相对的主表面和侧表面，具有多个阶梯部分的槽形成在 每个音叉齿的相对的主表面中的至少一个，多个第一电极设置在每个音叉齿的相对的主表面中的至少一个的凹槽的台阶部分上，多个 第二电极设置在每个音叉齿的侧面上，压电晶体音叉谐振器包括三个电极端子，三个电极端子中的每一个具有不同的电极性。

公开(公告)号：US06903618B2

公开(公告)日：2005-06-07

申请号：US10920018

申请日：2004-08-17

申请人： Hirofumi Kawashima

发明人： Hirofumi Kawashima

IPC分类号： H03H3/02 ,  H03H9/10 ,  H03H9/215 ,  H01L41/10

CPC分类号： H03H9/0547 ,  H03H3/02 ,  H03H9/1021 ,  H03H9/215 ,  H03H2003/026 ,  H03H2003/0492 ,  Y10T29/42

摘要： A quartz crystal unit has a quartz crystal tuning fork resonator capable of vibrating in a flexural mode of an inverse phase. The quartz crystal tuning fork resonator has a fundamental mode of vibration, a second overtone mode of vibration, a quartz crystal tuning fork base, and a plurality of quartz crystal tuning fork tines connected to the quartz crystal tuning fork base. A merit value M2 for the second overtone mode of vibration of the quartz crystal tuning fork resonator is less than 30 so that the second overtone mode of vibration thereof is suppressed, the merit value M2 being defined by a ratio Q2/r2, where Q2 and r2 represent a quality factor and a capacitance ratio of the second overtone mode of vibration, respectively, of the quartz crystal tuning fork resonator capable of vibrating in the second overtone mode.

摘要翻译： 石英晶体单元具有能够以反相的弯曲模式振动的石英音叉谐振器。 石英音叉谐振器具有基本的振动模式，第二泛音振动模式，石英晶体音叉基座和连接到石英晶体音叉基座的多个石英晶体音叉。 对于石英音叉谐振器的第二泛音振动模式的优点值M 2 2小于30，从而抑制其第二泛音振动模式，优点值M 2 由比例Q 2 / r 2 2定义，其中Q 2和R 2代表 分别能够在第二泛音模式下振动的石英音叉谐振器的第二泛音振动模式的质量因子和电容比。