Operation apparatus

1. A touch operation device comprising:

a first piezoelectric layer having a piezoelectric property and flexibility;

a second piezoelectric layer having a piezoelectric property and flexibility and disposed to correspond with the first piezoelectric layer;

a touch detection layer positioned in a stacked arrangement between the first piezoelectric layer and the second piezoelectric layer piezoelectric layer and which is disposed to correspond with the first piezoelectric layer and the second piezoelectric layer, the touch detection layer detects a touch operation; and

a piezoelectric body control circuit which selectively applies a signal to a part of the first piezoelectric layer and a corresponding part of the second piezoelectric layer corresponding to the touch operation detected by the touch detection layer and then bends the part of the first piezoelectric layer and the corresponding part of the second piezoelectric layer.

2. The touch operation device according to claim 1 , wherein the piezoelectric body control circuit selectively applies a signal to the part of the first piezoelectric layer and the corresponding part of the second piezoelectric layer corresponding to a particular position when a touch on a particular position is detected as the touch operation.

3. The touch operation device according to claim 2 , wherein the piezoelectric body control circuit selectively applies a signal to the part of the first piezoelectric layer and the corresponding part of the second piezoelectric layer corresponding to a position which is adjacent to a position shifted from the particular position and which is adjacent to a side of the particular position when a touch on the position shifted from the particular position is detected as the touch operation.

4. The touch operation device according to claim 2 , wherein the piezoelectric body control circuit sequentially applies a signal to the part of the first piezoelectric layer and the corresponding part of the second piezoelectric layer corresponding to a position which is adjacent to the particular position and which is adjacent to a side of a direction of a slide operation when the slide operation from the particular position is detected as the touch operation.

5. The touch operation device according to claim 1 , wherein the first piezoelectric layer and the second piezoelectric layer each comprises:

a signal electrode formed in each part of the first piezoelectric layer and the second piezoelectric layer,

a ground electrode disposed to face each signal electrode, and

a piezoelectric body disposed between each signal electrode and the ground electrode.

6. The touch operation device according to claim 5 , wherein the piezoelectric body is configured so that an L-polylactic acid layer and a D-polylactic acid layer are stacked.

7. The touch operation device of claim 1 , wherein:

the first and second piezoelectric layers are divided into a plurality of first areas, each first area has a piezoelectric property and flexibility;

the touch detection layer is divided into a plurality of second areas which are disposed to correspond to the first areas of the first and second piezoelectric layers, each second area detects a touch operation; and

the piezoelectric body control circuit selectively applies the signal to at least one of the first areas of the first piezoelectric layer and at least one of the first areas of the second piezoelectric layer corresponding to the touch operation detected by at least one of the second areas of the touch detection layer and then bends the at least one first area of the first piezoelectric layer and the at least one first area of the second piezoelectric layer.

8. The touch operation device according to claim 7 , wherein the piezoelectric body control circuit selectively applies a signal to the at least one first area of the first piezoelectric layer and the at least one first area of the second piezoelectric layer corresponding to a particular position when a touch on at least one of the second areas of the touch detection layer corresponding to the particular position is detected as the touch operation.

9. The touch operation device according to claim 1 , wherein the touch detection layer has a neutral axis of bending when the piezoelectric body control circuit applies a signal to a part of the first piezoelectric layer and a corresponding part of the second piezoelectric layer.

10. The touch operation device according to claim 1 , wherein the first piezoelectric layer is displaced in a direction opposite to the second piezoelectric layer when the piezoelectric body control circuit applies a signal to a part of the first piezoelectric layer and a corresponding part of the second piezoelectric layer.

11. The touch operation device according to claim 10 , wherein the touch detection layer has a neutral axis of bending when the piezoelectric body control circuit applies a signal to a part of the first piezoelectric layer and a corresponding part of the second piezoelectric layer.

12. An information device comprising:

a touch detection layer which has detection points associated with positions of an image and which detects a touch operation on at least one of the detection points by a user;

a target specifying unit which specifies a target to be photographed or reproduced;

first and second sensory stimulation layers positioned in a stacked arrangement with the touch detection layer, with the touch detection layer disposed between the first and second sensory stimulation layers, and each of the first and second sensory stimulation layers have stimulation areas in positional relation to the detection points to provide a sensory stimulation to the user; and

a control unit which applies a signal to the first and second sensory stimulation layers to provide the sensory stimulation in accordance with positional relation between the position of the target in the image and a touch position detected by the touch detection layer.

13. The information device according to claim 12 , wherein the sensory stimulation is a tactile stimulation.

14. The information device according to claim 13 , wherein when the position of the target is different from the touch position, the control unit changes vibration in accordance with the difference to provide the sensory stimulation.

15. The information device according to claim 12 , wherein the sensory stimulation providing unit provides the sensory stimulation by bending the touch position.

16. The information device according to claim 15 , wherein when the position of the target is equal to the touch position, the control unit bends and vibrates a part of the first and second sensory stimulation layers corresponding to the touch position to provide the sensory stimulation.

17. The information device according to claim 15 , wherein when the position of the target is not equal to the touch position, the control unit applies a signal to the first and second sensory stimulation layers to change a bending position of the first and second sensory stimulation layers in accordance with a shift direction between the position of the target and the touch position to provide the sensory stimulation.

18. The information device according to claim 12 , further comprising a position specifying unit which specifies a position in the image,

wherein the control unit applies a signal to the first and second sensory stimulation layers to provide the sensory stimulation in accordance with positional relation between the position specified by the position specifying unit and the position of the target in the image.

19. The information device according to claim 12 , wherein the target specifying unit specifies the target by voice input.

20. The information device according to claim 12 , wherein the target specifying unit specifies the target by a touch operation.

21. The information device according to claim 12 , further comprising an imaging unit which acquires an image of the target,

wherein the control unit searches for the position of the target in an image acquired in the imaging unit from characteristics of the image.

22. A touch operation device comprising:

first and second piezoelectric layers, each of the first and second piezoelectric layers divided into a plurality of piezoelectric areas, each piezoelectric area in the first piezoelectric layer is disposed to correspond with a corresponding piezoelectric area in the second piezoelectric layer, and each piezoelectric area having a piezoelectric property and flexibility;

a touch detection layer positioned in a stacked arrangement between the first and second piezoelectric layers and divided into a plurality of touch detection areas which are disposed to correspond to the corresponding piezoelectric areas in the first and second piezoelectric layers, each touch detection area detects a touch operation; and

a piezoelectric body control circuit which selectively applies a signal to at least one of the piezoelectric areas of the first piezoelectric layer and the at least one corresponding piezoelectric area of the second piezoelectric layer corresponding to the touch operation detected by the at least one corresponding touch detection area of the touch detection layer, and then bends the at least one piezoelectric area of the first piezoelectric layer and the at least one corresponding piezoelectric area of the second piezoelectric layer;

wherein the first piezoelectric layer is displaced in a direction opposite to the second piezoelectric layer and the touch detection layer has a neutral axis of bending when the piezoelectric body control circuit applies a signal to the at least one piezoelectric area of the first piezoelectric layer and the at least one corresponding piezoelectric area of the second piezoelectric layer.