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US 11,309,864 B2Granted
Piezoelectric resonator unit and method for manufacturing the piezoelectric resonator unit
AssigneeMurata Manufacturing Co., Ltd.
InventorsHiroshi Ibaragi, Ryuichi Kawai
Life of this patent
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Abstract
A quartz crystal resonator unit that includes a quartz crystal resonator, a lid member and a base member defining an internal space that accommodates the quartz crystal resonator, and a sealing frame and a joining material joining the lid member and the base member to each other. In a plan view of a principal surface of the base member, the sealing frame and the joining material have a frame shape surrounding the quartz crystal resonator, and the frame shape has a uniform width.
Claims20
A piezoelectric resonator unit comprising:
- a piezoelectric resonator;
- a lid member and a base member defining an internal space that accommodates the piezoelectric resonator;
- and
- a joining member joining the lid member and the base member,
- wherein in a plan view of a principal surface of the base member, the joining member has a frame shape with a uniform width dimension surrounding the piezoelectric resonator,
- wherein the frame shape is a rectangular shape including sides and corners, and in the plan view of the principal surface of the base member, a width dimension of the sides is equal to a width dimension of the corners,
- wherein the corners each include a linear portion having a same width dimension as the sides in the plan view of the principal surface of the base member, a first curve connecting a first side of the sides to the linear portion, and a second curve connecting a second side of the sides to the linear portion;
- the first curve and the second curve each include a first rounded portion having a first radius and a second rounded portion concentric with the first rounded portion and having a second radius different from the first radius;
- and
- a difference between the first radius and the second radius is equal to the width dimension of the linear portion in the plan view of the principal surface of the base member.
7 more elements
A piezoelectric resonator unit comprising:
- a piezoelectric resonator;
- a lid member and a base member defining an internal space that accommodates the piezoelectric resonator;
- and
- a joining member joining the lid member and the base member,
- wherein in a plan view of a principal surface of the base member, the joining member has a frame shape with a uniform width dimension surrounding the piezoelectric resonator,
- wherein the frame shape is a rectangular shape including sides and corners, and in the plan view of the principal surface of the base member, a width dimension of the sides is equal to a width dimension of the corners, and
- wherein the base member includes respective anti-alloying films adjacent to each of the corners.
4 more elements
A piezoelectric resonator unit comprising:
- a piezoelectric resonator;
- a lid member and a base member defining an internal space that accommodates the piezoelectric resonator;
- and
- a joining member joining the lid member and the base member,
- wherein in a plan view of a principal surface of the base member, the joining member has a frame shape with a uniform width dimension surrounding the piezoelectric resonator,
- wherein the joining member includes:
- a sealing frame in the frame shape on the principal surface of the base member and disposed along an entire circumference of the lid member;
- and
- a joining material in the frame shape on the sealing frame,
- wherein the frame shape is a rectangular shape including sides and corners, and in the plan view of the principal surface of the base member, a width dimension of the sides is equal to a width dimension of the corners,
- wherein the corners each include a linear portion having a same width dimension as the sides in the plan view of the principal surface of the base member, a first curve connecting a first side of the sides to the linear portion, and a second curve connecting a second side of the sides to the linear portion;
- the first curve and the second curve each include a first rounded portion having a first radius and a second rounded portion concentric with the first rounded portion and having a second radius different from the first radius;
- and
- a difference between the first radius and the second radius is equal to the width dimension of the linear portion in the plan view of the principal surface of the base member.
11 more elements
A piezoelectric resonator unit comprising:
- a piezoelectric resonator;
- a lid member and a base member defining an internal space that accommodates the piezoelectric resonator;
- and
- a joining member joining the lid member and the base member,
- wherein in a plan view of a principal surface of the base member, the joining member has a frame shape with a uniform width dimension surrounding the piezoelectric resonator,
- wherein the joining member includes:
- a sealing frame in the frame shape on the principal surface of the base member and disposed along an entire circumference of the lid member;
- and
- a joining material in the frame shape on the sealing frame,
- wherein the frame shape is a rectangular shape including sides and corners, and in the plan view of the principal surface of the base member, a width dimension of the sides is equal to a width dimension of the corners, and
- wherein the base member includes respective anti-alloying films adjacent to each of the corners.
8 more elements
A piezoelectric resonator unit manufacturing method, the method comprising:
- preparing a base member;
- holding a piezoelectric resonator on a principal surface of the base member;
- and
- joining a lid member to the base member with a joining member,
- wherein in a plan view of the principal surface of the base member, the joining member has a frame shape surrounding the piezoelectric resonator, and the frame shape has a uniform width
- wherein the lid member and the joining member are each made of a metal material;
- and the joining of the lid member to the base member includes heating and melting the joining member,
- wherein the frame shape is a rectangular shape including corners;
- the corners each include a rounded portion;
- and
- the joining of the lid member to the base member includes positioning respective anti-alloying films adjacent to each of the corners and forming the rounded portion of each corner using a corresponding one of the anti-alloying films.
8 more elements
Dependencies are inferred from the claim text.