Vibrator and electronic device including the same

Patent metadata

Field	Value
Publication number	US-9815086-B2
Application number	US-201414585195-A
Country	US
Kind code	B2
Filing date	Dec 30, 2014
Priority date	Jan 28, 2014
Publication date	Nov 14, 2017
Grant date	Nov 14, 2017

Abstract

There are provided a vibrator and an electronic device including the same. The vibrator includes: a housing having an internal space; an elastic member having both ends fixed to the housing so as to be disposed in the internal space in a state in which elastic deformation is possible; and a piezoelectric element mounted on one surface of the elastic member, wherein the piezoelectric element is fixed to the elastic member by soldering.

First claim

What is claimed is:

1. A vibrator comprising:
a housing having an internal space;
an elastic member having both ends fixed to the housing so as to be disposed in the internal space in a state in which elastic deformation is possible; and
a piezoelectric element mounted on one surface of the elastic member and fixed to the elastic member by soldering,
wherein the piezoelectric element includes a metal layer provided in a direction in which the piezoelectric element is coupled to the elastic member, and
wherein the metal layer entirely covers one surface of the piezoelectric element.

2. The vibrator of claim 1 , wherein the piezoelectric element is fixed to the elastic member by soldering via solder cream.

3. The vibrator of claim 2 , wherein the solder cream is a mixture of any one of lead powder or tin powder and a flux.

4. The vibrator of claim 1 , wherein the elastic member includes a bottom plate of which the piezoelectric element is mounted on one surface and an extension plate extended in a height direction from both ends of the bottom plate in a width direction.

5. The vibrator of claim 4 , wherein the extension plate includes a connection part having one end connected to the bottom plate, and extended in the height direction from a central portion of the bottom plate in a length direction and a support plate part provided at the other end of the connection part in the length direction to guide a mass body.

6. A vibrator comprising:
a housing having an internal space;
an elastic member having both ends fixed to the housing so as to be disposed in the internal space in a state in which elastic deformation is possible; and
a piezoelectric element mounted on one surface of the elastic member and fixed to the elastic member by soldering,
wherein the piezoelectric element includes a metal layer provided in a direction in which the piezoelectric element is coupled to the elastic member, and
wherein an insulating layer is provided between the metal layer and the piezoelectric element.

7. The vibrator of claim 6 , wherein the elastic member includes a bottom plate of which the piezoelectric element is mounted on one surface and an extension plate extended in a height direction from both ends of the bottom plate in a width direction.

8. The vibrator of claim 7 , wherein the extension plate includes a connection part having one end connected to the bottom plate, and extended in the height direction from a central portion of the bottom plate in a length direction and a support plate part provided at the other end of the connection part in the length direction to guide a mass body.

9. An electronic device comprising:
a display module displaying an image depending on selection of a user;
a case having an internal space receiving the display module; and
a vibrator including:
a housing mounted in the case and having an internal space;
an elastic member mounted in the internal space;
a piezoelectric element mounted on one surface of the elastic member by soldering via solder cream and vibrating the elastic member by deformation; and
a mass body coupled to the elastic member while absorbing shocks,
wherein the piezoelectric element includes a metal layer provided in a direction in which the piezoelectric element is coupled to the elastic member, and
wherein the metal layer entirely covers one surface of the piezoelectric element.

10. The electronic device of claim 9 , wherein the vibrator is mounted on an inner surface of the case.

11. The electronic device of claim 9 , wherein the vibrator is mounted on a lower surface of the display module.

12. The electronic device of claim 9 , wherein the display module includes:
a touch panel receiving a touch interaction of a user; and
a display panel coming in contact with a lower surface of the touch panel to provide a corresponding image depending the touch interaction with the touch panel.

Assignees

• Samsung Electro Mech
• Mplus Co Ltd

Inventors

• Han Sang Hun
• Park Sung Chan
• Park Hun Gyu
• Cho So Jung

Classifications

• H01L41/313

  Electricity · mapped topic

• B06B1/10

  making use of mechanical energy (B06B1/18, B06B1/20 take precedence) · CPC title

• H01L41/0933

  Electricity · mapped topic

• B06B1/0603 Primary

  using a piezoelectric bender, e.g. bimorph · CPC title

• H10N30/073

  by fusion of metals or by adhesives · CPC title