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1. 发明专利

JP2005020702A Piezoelectric resonator component 有权
标题翻译：压电谐振器组件
公开(公告)号：JP2005020702A
公开(公告)日：2005-01-20
申请号：JP2004061012
申请日：2004-03-04
申请人： Murata Mfg Co Ltd , 株式会社村田製作所
发明人： YOSHIO MASAKAZU , KOTANI KENICHI , YAMADA MITSUHIRO
IPC分类号： H03H9/17 , H01L41/08 , H03H3/02 , H03H9/02 , H03H9/10 , H03H9/13 , H03H9/15
CPC分类号： H03H9/177 , H03H9/0207 , H03H9/02157 , H03H9/1035 , H03H9/132
摘要： PROBLEM TO BE SOLVED: To provide a piezoelectric resonator component which dispenses with an additional member such as coating or damping member to enable the production process thereof to be simplified and the cost thereof to be reduced and suppresses the influence of a fundamental wave of thickness longitudinal vibration when utilizing a third-order harmonic wave of thickness longitudinal vibration.
SOLUTION: The piezoelectric resonator component 1 includes: an energy-trapped piezoelectric resonator 2 including a piezoelectric substrate 3 polarized in a direction of thickness and first and second vibrating electrodes 4, 5 partially formed on first and second major surfaces of the piezoelectric substrate 3 and utilizing a third-order harmonic wave of thickness longitudinal vibration; and first and second casing substrates 8, 10 respectively laminated on the piezoelectric resonator 2 so that cavities H are arranged so as not to interfere with vibration of a vibration section of he piezoelectric resonator 2. The first and second vibrating electrodes 4, 5 are dimensioned so that the difference between the peak values of the phases of S0 and S1 modes of the fundamental wave of the thickness longitudinal vibration falls within the range of ±5 degrees.
COPYRIGHT: (C)2005,JPO&NCIPI
摘要翻译：要解决的问题：提供一种压电谐振器部件，其不需要诸如涂层或阻尼部件的附加部件，从而能够简化其制造工艺，并降低其成本并抑制基波的影响当使用厚度纵向振动的三次谐波时，其厚度纵向振动。解决方案：压电谐振器部件1包括：能量捕获压电谐振器2，其包括在厚度方向上极化的压电基板3和部分地形成在压电体的第一和第二主表面上的第一和第二振动电极4,5 衬底3并利用厚度纵向振动的三次谐波; 以及分别层叠在压电谐振器2上的第一和第二壳体基板8,10，使得空腔H被布置成不干扰压电谐振器2的振动部分的振动。第一和第二振动电极4,5的尺寸使得厚度纵向振动的基波的S0和S1模的相位的峰值之间的差落在±5度的范围内。版权所有（C）2005，JPO＆NCIPI

2. 发明专利

JP2005198216A Energy trap type piezoelectric resonator component 有权
标题翻译：能量陷波型压电谐振器组件
公开(公告)号：JP2005198216A
公开(公告)日：2005-07-21
申请号：JP2004010663
申请日：2004-01-19
申请人： Murata Mfg Co Ltd , 株式会社村田製作所
发明人： YAMADA MITSUHIRO , YOSHIO MASAKAZU , KOTANI KENICHI
IPC分类号： H03H9/02 , H03H9/10 , H03H9/17
CPC分类号： H03H9/1035 , H03H9/0207 , H03H9/02094 , H03H9/132 , H03H9/177
摘要： PROBLEM TO BE SOLVED: To provide an energy trap type piezoelectric resonator component which utilizes a third overtone of a thickness longitudinal vibration, effectively controls the fundamental wave of the thickness longitudinal vibration as a spurious wave, is relatively free from area restraints of the electrode and dimensional constraints and meets miniaturization.
SOLUTION: In the piezoelectric resonator utilizing a third overtone of a thickness longitudinal vibration mode, first and second vibrating electrodes 4 having an elliptical shape are arranged on portions of first and second major surfaces 3a, 3b of a piezoelectric substrate 3 having a rectangular shape, and the first vibrating electrode 4 and the second vibrating electrode face each other on front and rear sides with the piezoelectric substrate 3 interposed therebetween. In an energy trap type piezoelectric resonator component 1, a flattening ratio a/b of a minor axis diameter (b) to a major axis diameter (a) of the elliptical shape of the vibrating electrode 4 is within a range of 1.2 to 1.45.
COPYRIGHT: (C)2005,JPO&NCIPI
摘要翻译：要解决的问题：为了提供利用厚度纵向振动的第三泛音的能量陷波型压电谐振器部件，将厚度纵向振动的基波有效地控制为杂波，相对没有区域限制电极和尺寸约束并满足小型化。解决方案：在具有厚度纵向振动模式的第三谐波的压电谐振器中，具有椭圆形状的第一和第二振动电极4布置在压电基片3的第一和第二主表面3a，3b的具有并且第一振动电极4和第二振动电极的前侧和后面彼此面对，压电基板3插入其间。在能量陷波型压电谐振器部件1中，短轴直径（b）与振动电极4的椭圆形状的长轴直径（a）的平坦化比a / b在1.2〜1.45的范围内。版权所有（C）2005，JPO＆NCIPI

3. 发明专利

JP2003046362A Energy confinement type thickness longitudinal piezoelectric resonator 有权
标题翻译：能量密封类型厚度纵向压电谐振器
公开(公告)号：JP2003046362A
公开(公告)日：2003-02-14
申请号：JP2002214387
申请日：2002-07-23
申请人： Murata Mfg Co Ltd , 株式会社村田製作所
发明人： KAIDA HIROAKI , YAMADA MITSUHIRO
IPC分类号： H03H9/17 , H03H9/02
摘要： PROBLEM TO BE SOLVED: To provide an energy confinement type thickness longitudinal piezoelectric resonator that utilizes harmonics of a thickness longitudinal vibration mode, can promote downsizing, and has an excellent resonance characteristics hardly susceptible to the effect by a mechanical support.
SOLUTION: The energy confinement type thickness longitudinal piezoelectric resonator 1 is provided with: a strip shaped rectangular piezoelectric plate 2; first and second stimulating electrodes 3, 4 that are formed to both sides of the piezoelectric plate 2 and opposed to each other with the piezoelectric plate 2 inbetween; and an internal electrode placed in the piezoelectric plate and opposed to the first and second stimulating electrodes 3, 4. A size ratio L/d, where L is the length of the piezoelectric plate 2 in the length direction and d is the thickness t of the piezoelectric plate 2 divided by the order n of harmonics, is selected to be 16±0.5, 21±0.5, 23±0.5, 25±0.5, or 27±0.5.
COPYRIGHT: (C)2003,JPO
摘要翻译：要解决的问题：为了提供利用厚度纵向振动模式的谐波的能量约束型厚度纵向压电谐振器，可以促进小型化，并且具有难以受到机械支撑的影响的极好的谐振特性。解决方案：能量限制型厚度纵向压电谐振器1设有：带状矩形压电板2; 第一和第二激励电极3,4形成在压电板2的两侧并且彼此相对并且压电板2在其间; 以及设置在压电板中并与第一和第二刺激电极3,4相对的内部电极。尺寸比L / d，其中L是压电板2在长度方向上的长度，d是厚度t 将压电板2除以谐波次数n，选择为16±0.5,21±0.5,23±0.5,25±0.5或27±0.5。

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