Vibration generating apparatus

1 . An apparatus, comprising:

a vibration portion;

a first protection member covering a first surface of the vibration portion; and

a second protection member covering a second surface of the vibration portion,

wherein at least one of the first protection member and the second protection member includes two or more layers, and a first layer comprises a metal material,

wherein the vibration portion comprises:

a vibration layer including a piezoelectric material;

a first electrode layer at a first surface of the vibration layer; and

a second electrode layer at a surface different from the first surface of the vibration layer,

wherein each of the first and second protection members comprises:

a base layer;

the first layer disposed between the vibration portion and the base layer; and

an adhesive layer between the first layer and the vibration portion, the adhesive layer being a conductive adhesive layer,

wherein the first and second protection members have a size greater than or equal to a size of the vibration portion,

wherein the first layer is electrically connected to at least one of the first electrode layer and the second electrode layer through the adhesive layer, and

wherein the first layer is configured as a portion of a contact portion of the vibration portion.

2 . The apparatus of claim 1 , wherein the first layer overlaps the vibration portion.

3 . The apparatus of claim 1 , further comprising an adhesive layer between the first layer and the base layer.

4 . The apparatus of claim 1 , wherein a size of the first layer is less than or equal to a size of the base layer.

5 . The apparatus of claim 1 , further comprising a secondary layer between the base layer and the first layer.

6 . The apparatus of claim 1 , wherein the first layers of the first protection member and the second protection member comprise the same metal material or different metal materials.

7 . An apparatus, comprising:

a passive vibration member; and

a vibration generating apparatus configured to vibrate the passive vibration member,

wherein the vibration generating apparatus comprises the apparatus of claim 1 .

8 . The apparatus of claim 7 , wherein the passive vibration member comprises one or more of metal, plastic, paper, fiber, cloth, wood, rubber, leather, glass, carbon, and mirror.

9 . The apparatus of claim 7 , wherein the passive vibration member comprises one or more of a display panel including a plurality of pixels configured to display an image, a screen panel on which an image is to be projected from a display apparatus, a light emitting diode lighting panel, an organic light emitting lighting panel, an inorganic light emitting lighting panel, a signage panel, an interior material of a vehicular apparatus, an exterior material of a vehicular apparatus, a glass window of a vehicular apparatus, a seat interior material of a vehicular apparatus, a ceiling material of a building, an interior material of a building, a glass window of a building, an interior material of an aircraft, a glass window of an aircraft, and a mirror.

10 . The apparatus of claim 7 , wherein:

the passive vibration member is an interior material of a vehicular apparatus;

the interior material of the vehicular apparatus comprises one or more of a dash board, a pillar interior material, a roof interior material, a door interior material, a seat interior material, a handle interior material, a floor interior material, a rear package interior material, a rear view mirror, an overhead console, a glove box, and a sun visor; and

the vibration generating apparatus is configured to vibrate one or more of the dash board, the pillar interior material, the roof interior material, the door interior material, the seat interior material, the handle interior material, the floor interior material, the rear package interior material, the rear view mirror, the overhead console, the glove box, and the sun visor.

11 . The apparatus of claim 1 , wherein the at least one of the first electrode layer and the second electrode layer is configured to be driven by a vibration driving signal.

12 . The apparatus of claim 1 , wherein the at least one of the first electrode layer and the second electrode layer is configured to be driven by an alternating current (AC) voltage.

13 . The apparatus of claim 1 , wherein the at least one of the first electrode layer and the second electrode layer is electrically coupled to a signal cable.

14 . An apparatus, comprising:

one or more vibration generating portions,

wherein each of the one or more vibration generating portions comprises:

a vibration portion;

a first protection member at a first surface of the vibration portion, the first protection member including two or more layers; and

a second protection member at a second surface different from the first surface of the vibration portion, the second protection member including two or more layers,

wherein the vibration portion comprises:

a vibration layer;

a first electrode layer at a first surface of the vibration layer; and

a second electrode layer at a second surface different from the first surface of the vibration layer,

wherein one of the two or more layers in one or more of the first protection member and the second protection member comprises an organic material,

wherein each of the first and second protection members comprises:

a base layer;

a first layer adjacent to the organic material and comprising a metal material; and

an adhesive layer between the first layer and the vibration portion, the adhesive layer being a conductive adhesive layer,

wherein the first and second protection members have a size greater than or equal to a size of the vibration portion,

wherein the first layer is electrically connected to at least one of the first electrode layer and the second electrode layer through the adhesive layer, and

wherein the first layer is configured as a portion of a contact portion of the vibration portion.

15 . The apparatus of claim 14 , wherein the adhesive layer comprises:

a first adhesive layer between the first electrode layer and the first protection member; and

a second adhesive layer between the second electrode layer and the second protection member.

16 . The apparatus of claim 14 , wherein each of the one or more vibration generating portions further comprises a secondary layer between the first layer and the organic material.

17 . The apparatus of claim 15 , wherein the first layer is disposed between the organic material of the first protection member and the first adhesive layer and between the organic material of the second protection member and the second adhesive layer.

18 . The apparatus of claim 14 , wherein the vibration layer comprises a piezoelectric-type vibration layer.

19 . The apparatus of claim 14 , wherein the vibration layer comprises:

a plurality of inorganic material portions having a piezoelectric characteristic; and

an organic material portion between the plurality of inorganic material portions.

20 . The apparatus of claim 14 , further comprising two or more vibration generating portions,

wherein the two or more vibration generating portions are configured to vibrate in the same direction.

21 . An apparatus, comprising:

a passive vibration member; and

a vibration generating apparatus configured to vibrate the passive vibration member,

wherein the vibration generating apparatus comprises the apparatus of claim 18 .

22 . The apparatus of claim 21 , wherein the passive vibration member comprises one or more of metal, plastic, paper, fiber, cloth, wood, rubber, leather, glass, carbon, and mirror.

23 . The apparatus of claim 21 , wherein the passive vibration member comprises one or more of a display panel including a plurality of pixels configured to display an image, a screen panel on which an image is to be projected from a display apparatus, a light emitting diode lighting panel, an organic light emitting lighting panel, an inorganic light emitting lighting panel, a signage panel, an interior material of a vehicular apparatus, an exterior material of a vehicular apparatus, a glass window of a vehicular apparatus, a seat interior material of a vehicular apparatus, a ceiling material of a building, an interior material of a building, a glass window of a building, an interior material of an aircraft, a glass window of an aircraft, and a mirror.

24 . The apparatus of claim 21 , wherein:

the passive vibration member is an interior material of a vehicular apparatus;

the interior material of the vehicular apparatus comprises one or more of a dash board, a pillar interior material, a roof interior material, a door interior material, a seat interior material, a handle interior material, a floor interior material, a rear package interior material, a rear view mirror, an overhead console, a glove box, and a sun visor; and

the vibration generating apparatus is configured to vibrate one or more of the dash board, the pillar interior material, the roof interior material, the door interior material, the seat interior material, the handle interior material, the floor interior material, the rear package interior material, the rear view mirror, the overhead console, the glove box, and the sun visor.