KR101333794B1 - Vibration module and haptic device using the same - Google Patents

Abstract

The present invention relates to a vibration module for a haptic device including a piezoelectric ceramic element and a haptic device using the same, comprising: a frame including sidewalls defining an external boundary; A fixing part connected across the side walls facing each other of the frame; A plurality of diaphragms branched and extending from the fixing part and formed to be separated from each other; A plurality of supports connected to a lower surface of each end of each of the plurality of diaphragms and having a plate shape; And a vibration module for a haptic device including a piezoelectric ceramic element attached to each side of each of the plurality of supports, and a haptic device using the same.

Description

Vibration module and haptic device using the same {Vibration module and haptic device using the same}

The present invention relates to a vibration module and a haptic device using the same, and more particularly, to a vibration module for a haptic device including a piezoelectric ceramic element and a haptic device using the same.

Haptic technology is a technology that allows the user to feel the sense of touch, power, and movement through the keyboard, mouse, joystick, and touch screen, which are the user's input devices. Although information is mainly used, users want more specific and realistic information through virtual reality, and what was developed to satisfy this is to convey tactile force and power.

In order to make it easier and more convenient for users to communicate with computers or programs, various methods are used. Recently, in addition to the concept of touch input, the user interface reflects the user's intuitive experience and diversifies the feedback. Many haptic devices including the concept of being employed have been adopted.

In general, a haptic device includes a touch panel having transparency and an image display device for displaying an image, and when a user manipulates the touch panel while viewing an image through the touch panel, a vibration feeling is applied to the touch panel by a vibration generating means. Vibration is transmitted to the user. An important point in developing a haptic device is to be able to accurately measure the user's input and transmit it to a virtual environment or a remote place, and to present the interaction force to the user at high resolution. In other words, the haptic device must be able to transmit the user's movement in any direction and generate the interaction force exactly as desired in any direction.

Conventionally, in order to generate vibration, it is common to drive a small vibration motor so that the driving force is transmitted to the case of the mobile communication terminal so that the mobile communication terminal can vibrate. Currently applied vibration motors are classified into coin type and bar type according to their shape, and both types of vibration motors arrange conductors in a magnetic field at a right angle to the magnetic field. The current is based on the principle that electromagnetic force is generated in the direction perpendicular to the magnetic field when a current is applied to the magnetic field.

1A is a schematic cross-sectional view of a coin type vibration motor according to the prior art, and FIG. 1B is a schematic cross-sectional view of a bar type vibration motor according to the prior art.

The coin type vibration motor 30 shown in FIG. 1A has a pair of brushes connected to one end of the lower substrate 11 when the power supplied from the outside is input to the lower substrate 11 through the terminal portion 12. Through the 13, the other end of the brush 13 is led to the commutator 22 of the upper substrate 21 which is elastically contacted, and the commutator 22 follows the circuit printed on the upper substrate 21. The external power is supplied to the winding coil 23. In this case, the electromagnetic force is generated by the interaction between the magnetic flux generated in the winding coil 23 and the magnetic flux generated in the magnet 14, and the rotor 20 is rotated in one direction by using the magnetic force. The commutator 22 is connected to the winding coil 23 as the relative position of the winding coil 23 of the rotor 20 that is a rotating body and the magnet 14 of the stator 10 that is a fixed body changes. Periodically alter the polarity of the supplied power. At this time, the rotor 20 in which the weight body 24 is eccentrically disposed is driven eccentrically in one direction with the shaft 16 as the center of rotation, and the eccentric rotational driving force is lower plate 15 through the shaft 16. ) Is transmitted to the case 25 and causes vibration.

The bar-type vibration motor shown in FIG. 1B is largely composed of a stator 110, a rotor 130, and a power supply 150.

The body 111 of the stator portion 110 is composed of a case 112 and the yoke 114, the case 112 is a cylindrical shape with both ends open, the yoke 114 is a hollow yoke body 114b, a bearing seating groove 114a formed at the tip of the yoke body 114b, and a flange portion 114c formed around the bearing seating groove 114a. The rotor unit 130 includes an eccentric weight 131, a rotating shaft 132, a commutator 134, an armature 136, and the like, and an eccentric weight having its center of gravity eccentrically at one end of the rotating shaft 132. 131 is fixed, and the fixed body 138 is fixed to the other end of the rotating shaft 132. The rotor part 130 configured as described above is installed to be rotatable in the stator part 110 described above. The power supply unit 150 includes a fixed cap 152 and a pair of brushes 154 installed on the fixed cap 152. As described above, a current is supplied to the commutator 134 so that the armature 136 is provided. When a current flows in the coil (not shown) wound around the electromagnetic force, electromagnetic force is generated by interaction between the armature 136 and the magnet 116 fixed to the outside of the yoke body 114b. When the electromagnetic force generated as described above is applied to the armature 136, the rotating shaft 132 is rotated to generate vibration by rotating the eccentric weight 131 fixed to one end of the rotating shaft 132.

On the other hand, the vibration motors according to the related arts described above can be manufactured in a thin thickness, which is advantageous in miniaturization, and thus the use range of the vibration motors is wide, but there is a disadvantage in that power consumption is large and vibrations are weak in vibration.

Moreover, in general, vibration generating means such as vibration motors are located on the side or part of the lower surface of the touch panel to provide haptic feedback. However, in recent years, haptic devices such as smart phones, multimedia players, tablet PCs, netbooks, notebooks, and game machines are provided. As the size of the device increases and the demand for the multi-touch function of the haptic device increases, a realistic haptic is possible with conventional vibration generating means which are located on the side or part of the lower surface of the touch panel to cause only overall vibration of the haptic device. There is a problem that it is difficult to properly generate feedback.

The present invention is to solve the above-mentioned problems, to provide a vibration module and a haptic device using the haptic feedback effect that can be more diverse and realistic when a user inputs information to the touch panel using the touch. .

Vibration module for a haptic device according to an embodiment of the present invention comprises a frame including a side wall defining an external boundary; A fixing part connected across the side walls facing each other of the frame; A plurality of diaphragms branched and extending from the fixing part and formed to be separated from each other; A plurality of supports connected to a lower surface of each end of each of the plurality of diaphragms and having a plate shape; And piezoelectric ceramic elements attached to sides of each of the plurality of supports.

The vibration module for the haptic device further includes a lower plate connected to a lower end of the plurality of supports and disposed at a position corresponding to an end of each of the plurality of vibration plates.

The plurality of supports are disposed perpendicular to the diaphragm or inclined at a predetermined angle.

The piezoelectric ceramic elements are attached to one side or both sides of each side of each of the plurality of supports.

The piezoelectric ceramic element is formed by stacking a plurality of piezoelectric ceramic layers.

In the piezoelectric ceramic device, the magnitude of vibration varies according to the magnitude of an applied voltage.

A connection part having a width narrower than the width of the plurality of diaphragms is positioned between the fixing part and the plurality of diaphragms.

The fixing part is made of a vibration absorbing material or a vibration damping material so that vibrations of the plurality of vibration plates are mutually disconnected.

The plurality of diaphragms and supports are made of metal or polymer.

Positioning grooves of the support are formed on the lower surface of each end of each of the plurality of diaphragms.

Each of the plurality of diaphragms and the support are integrally formed.

Haptic device according to another embodiment of the present invention comprises a front cover; A touch panel for sensing an external contact; A frame including sidewalls defining an outer boundary, a fixed portion connected to the opposite sidewalls of the frame, a plurality of diaphragms branched from and extending from the fixed portion, and formed to be separated from each other, and ends of each of the plurality of diaphragms A vibration module connected to a lower surface, the support having a plate shape, and a piezoelectric ceramic element attached to each side of each of the supports, the vibration module generating haptic feedback vibration corresponding to an external contact sensed by the touch panel. ; A controller configured to generate a vibration generation signal to a piezoelectric ceramic element corresponding to a vibration plate adjacent to a contact position sensed by the touch panel among the plurality of vibration plates; And a housing accommodating the touch panel, the vibration module, and the control circuit.

The haptic device further includes a display panel for displaying image information.

The touch panel and the display panel are integrally formed.

The vibration module further includes a lower plate connected to a lower end of the plurality of supports and disposed at a position corresponding to an end of each of the plurality of vibration plates.

The diaphragm is in direct contact with the touch panel or the display panel or via a vibration transmitting member.

The bottom plate is in direct contact with the housing.

It further includes an elastic member located between the inner surface of the front cover portion and the upper surface of the touch panel.

The display device may further include an elastic member positioned between a lower surface of the touch panel or the display panel and an upper surface of the housing.

A plurality of said vibration modules are arranged on the same plane.

According to the vibration module for the haptic device and the haptic device using the same according to the present invention, when the user inputs information to the touch panel using the tactile sense, the vibration module that can provide a more diverse and realistic haptic feedback effect and using the same Haptic devices can be implemented.

1A is a schematic cross-sectional view of a coin type vibration motor according to the prior art, and FIG. 1B is a schematic cross-sectional view of a bar type vibration motor according to the prior art.
2 is an exploded perspective view of a haptic device according to an embodiment of the present invention.
3 is a plan view and a cross-sectional view of a vibration module for a haptic device according to an embodiment of the present invention.
4 is a schematic perspective view of an end of a diaphragm of a vibration module for a haptic device according to an embodiment of the present invention.
5 is a schematic perspective view of an end of a diaphragm of a vibration module for a haptic device according to another embodiment of the present invention.
6 is a cross-sectional view of a haptic device in another embodiment of the present invention.
7 is a plan view of a haptic device according to another embodiment of the present invention.

The following detailed description of specific embodiments provides several descriptions of specific embodiments of the present invention. However, the present invention can be implemented in many different ways, which are defined and covered by the claims. The detailed description is described with reference to the drawings, wherein like reference numerals refer to the same or functionally similar elements.

Hereinafter, a vibration module for a haptic device and a haptic device using the same will be described with reference to the accompanying drawings. However, the present invention has been described with reference to one embodiment shown in the drawings, but this is only an example, those skilled in the art that various modifications and equivalent other embodiments are possible from this. I will understand.

2 is an exploded perspective view of a haptic device according to an embodiment of the present invention, showing the configuration of a haptic device including a vibration module according to an embodiment of the present invention. The haptic device can be any computing device, including mobile phones, cell phones, smart phones, wireless radios, netbooks, tablet PCs, portable computers, laptop computers, MP3 players, satellite radios, satellite television, game consoles, and the like.

The configuration of the haptic device according to the present invention includes a front cover portion 201; A touch panel 202 that senses external contact; A vibration module 204 for generating haptic feedback vibrations corresponding to external contacts sensed by the touch panel 202; A controller (not shown) for generating a vibration signal to a piezoelectric ceramic element corresponding to a vibration plate adjacent to a contact position sensed by the touch panel 202 among the plurality of vibration plates; And a housing 205 for receiving the touch panel 202, the vibration module 204, and a control circuit. In addition, the display panel 203 may be further included below the touch panel 202.

The touch panel 202 may recognize a touch part through a hand of a person or a separate input means and transmit separate information about the touch part. The touch panel 202 may include a sensing area for an external touch and touch the user when the user touches the touch panel. The location information is output to the processor. According to the touch sensing method, it is divided into a resistive method, a capacitive method, and anti-infrared detection. The touch sensing method of an appropriate type is adopted in consideration of the convenience and sensing force of the manufacturing method. In the present invention, the touch sensing method is not particularly limited.

A display panel 203 such as an LCD, an OLED, or an LED may be disposed below the touch panel 202. Since the touch panel 202 is light transmissive, the display screen of the display panel 203 can be viewed through the touch panel 202. The touch panel 202 and the display panel 203 may be disposed to overlap each other in a separate structure, and may be attached to each other by an adhesive layer therebetween, or may be formed in an integrated form to form the touch panel and the display panel on the upper and lower substrates. It can also be configured.

The vibration module 204 senses an external contact in the touch panel 202 and generates a vibration in response to outputting a signal to an external processor in order to provide haptic feedback to the user. The detailed configuration of the vibration module 204 will be described later.

When the user touches the touch panel 202, the contacted position information is output, and the controller (not shown) includes a plurality of vibration means so that vibration may be generated only at a portion adjacent to the contact position by receiving the contact position information. The vibration module 204 determines the vibration means adjacent to the contact position of the touch panel 202, generates a vibration signal, and inputs the vibration signal to the vibration means.

3 is a plan view (a) of the vibration module for a haptic device according to an embodiment of the present invention and a cross-sectional view (b) of the cut along the line A-A '. Vibration module 204 for a haptic device according to an embodiment of the present invention includes a frame 301 including a side wall defining an external boundary; A fixing part 302 connected across the side walls of the frame 301 facing each other; A plurality of diaphragms 304 branched from the fixing part 302 and formed to be separated from each other; A plurality of supports 310, 320, 330, 340 connected to a lower surface of each end of each of the plurality of diaphragms 304 and having a plate shape; And piezoelectric ceramic elements 311, 321, 331, and 341 attached to sides of each of the plurality of supports.

The frame 301 includes sidewalls that define an outer boundary of the vibration module 204 for the haptic device, and may further include a bottom surface for a more stable structure.

The fixing part 302 connects the side walls 303 and 305 facing each other among the side walls of the frame 302, and serves to fix the plurality of diaphragms 304. The fixing part 302 is made of a vibration absorbing material or a vibration damping material so that when some of the diaphragms of the plurality of diaphragms 304 vibrate by input of a vibration signal, the vibrations of the respective diaphragms are disconnected from each other without being transmitted to other diaphragms. Preferred, but not limited to.

The diaphragm 304 is branched and extended from the fixing part 302 and separated from each other by the open area, so that the diaphragm 304 can vibrate independently of the surrounding diaphragm. The fixing part 302 and the diaphragm 304 may be directly connected, but may be connected by the connecting part 306 having a width narrower than that of the diaphragm 304. By the connecting portion 306 having a narrow width, the vibration of some diaphragms can be more efficiently disconnected without being transmitted to other diaphragms, and the vibration of the diaphragms can be amplified.

A plurality of supports 310, 320, 330, and 340 connected to a lower surface of an end portion opposite to the fixing plate 302 to which the plurality of diaphragms 304 are connected, and piezoelectrics attached to the side surfaces of the plurality of supports, respectively. Ceramic elements 311, 321, 331, and 341 are disposed. The support supports the diaphragm located at the top, providing an area to which the piezoelectric ceramic element is to be attached. In addition, the lower plates 307 and 308 may be further connected to lower ends of the plurality of supports 310 and 320 disposed below one end of the diaphragm and disposed at positions corresponding to the ends of the diaphragm. When the frame 301 includes a bottom surface, the bottom surface of the frame 301 may replace the lower plate 307.

4 is a schematic perspective view showing one end of a diaphragm in a vibration module for a haptic device according to an embodiment of the present invention. Between the end of the diaphragm 401 and the lower plate 402 corresponding thereto, a support, that is, a first support 410 to a second support 420 is disposed, and each support 410, 420 is the diaphragm 401. And attached to one side of the lower plate 402, and connects the diaphragm 402 and the lower plate 402. In this embodiment, two supports are used, but the number of supports is not limited thereto.

At this time, the support 410, 420 are arranged symmetrically with each other at a predetermined interval, preferably equal intervals. In addition, each of the supports (410, 420) is formed in the shape of a bar (bar), each support is disposed so that the longitudinal direction is perpendicular to the plane of the diaphragm 401 and the lower plate 402.

On the other hand, the diaphragm 401 and the support 410, 420 is made of a metal material or a polymer material. The lower surface of each end of each of the plurality of diaphragm may be formed a positioning groove (not shown) of the support to easily assemble the support to be symmetrical. Alternatively, the diaphragm 401 and the support 410, 420 may be integrally formed.

The piezoelectric ceramic elements 411, 412, 421, and 422 are attached to both surfaces of the supporters 410 and 420 to cause vibration when a predetermined voltage is applied. That is, the first to fourth piezoelectric ceramics 411, 412, 421, and 422 are attached to both surfaces of each of the first to second supporters 410 and 420, respectively, when the predetermined voltage is applied to the first to fourth supports. Vibration generated in the piezoelectric ceramics is transmitted to the diaphragm 401 through the respective support. At this time, the diaphragm 401 vibrates as a whole and is transmitted to a region corresponding to the corresponding diaphragm to the haptic device. The diaphragm may also serve to amplify the vibration of the support.

On the other hand, according to the magnitude of the voltage applied to the first to fourth piezoelectric ceramics, the magnitude of the vibration of the first to fourth piezoelectric ceramics is changed, it is possible to adjust the vibration intensity of the vibration module for the haptic device.

The piezoelectric ceramic element acting as a vibration source of the vibration module for the haptic device has a characteristic that the electrical energy is converted into mechanical energy, or vice versa. The piezoelectric ceramic element causes thermal expansion due to temperature change, and shrinks small when pressure is applied. These things happen as well when the electric field is applied.

Looking at the stretching principle of the piezoelectric ceramic element when the electric field is applied, the positive and negative ions are elastically connected to the piezoelectric ceramic element to form a crystal lattice. In this way, stress is generated and the crystal lattice is deformed. Specifically, in the initial state of the piezoelectric ceramic, which is a polycrystalline body, each grain interior is generally divided into several polarizations having different polarization directions. In this state, the polarization to the whole cancels out and is not expressed externally. At this time, when an electric field is applied to the piezoelectric ceramic element, the polarization direction inside the crystal is polarized along the electric field direction, and at the same time, the length of the crystal grain is increased in the electric field direction. When the electric field is removed, the entire state is almost polarized without returning to the initial state. Displacement due to polarization is called residual deflection, and a series of treatments is called polarization treatment, as mentioned above. After polarization treatment, each crystal is reciprocated in the increased or decreased state by applying or removing an electric field in the same direction. And the piezoelectric ceramics as a whole move.

The piezoelectric ceramic elements as described above can have high precision control of small displacement, have fast response, and have high energy conversion efficiency. Therefore, when the piezoelectric ceramic device is used as the vibration source of the vibration module for the haptic device, the vibration module for the haptic device can be implemented with low power consumption, strong durability, and adjustable vibration intensity.

In this embodiment, the piezoelectric ceramic element is composed of one layer on both sides of the support, but the present invention is not limited thereto. The piezoelectric ceramic element may be attached to only one surface of each side of the plurality of supports, and the plurality of piezoelectric ceramic layers may be stacked. Can be formed. In addition, the piezoelectric ceramic elements need not be limited to one attached to one side of the support, and may be attached to two or more sides of each support as necessary.

4 is a schematic perspective view of an end of a diaphragm of a vibration module for a haptic device according to a second embodiment of the present invention. Compared with the first embodiment, the second embodiment shown in FIG. 4 has a different arrangement structure of the support and the remaining components are almost similar, which will be described below with reference to different structures.

The diaphragm 501 and the lower plate 502 are spaced apart from each other and arranged in parallel. The first to fourth supports 510, 520, 530, and 540 are disposed between the diaphragm 501 and the lower plate 502. At this time, the number of the plurality of supports is particularly limited (two or one of the first embodiment). It is sufficient to be arranged at a predetermined interval from each other, preferably at equal intervals, but not in each of the two embodiments, and the lengths of the supports are inclined at a predetermined angle with respect to the plane of the diaphragm 501 and the lower plate 502. The piezoelectric ceramic elements 511, 512, 521, 522, 531, 532, 541, and 542 are attached to both sides of each support which are inclined to cause vibration when a predetermined voltage is applied.

6 is a cross-sectional view of a haptic device in a third embodiment of the present invention.

Haptic device 600 according to the present invention includes a front cover portion (601); A touch panel 602 that senses external contact; A frame including sidewalls defining an outer boundary, a fixed portion connected to the opposite sidewalls of the frame, a plurality of diaphragms branched from and extending from the fixed portion, and formed to be separated from each other, and ends of each of the plurality of diaphragms A vibration module connected to a lower surface, the support having a plate shape, and a piezoelectric ceramic element attached to each side of each of the supports, the vibration module generating haptic feedback vibration corresponding to an external contact sensed by the touch panel. 603; A controller configured to generate a vibration generation signal to a piezoelectric ceramic element corresponding to a vibration plate adjacent to a contact position sensed by the touch panel among the plurality of vibration plates; And a housing 605 for receiving the touch panel, the vibration module, and the control circuit. In addition, the haptic device 600 further includes a display panel for displaying image information.

As described in the foregoing embodiments, the vibration module 604 forms an empty space between the diaphragms adjacent to each other, and is connected to the fixed portion via the connection portion, so that the vibration modules are independently separated from each other and vibrate independently of each other. Since it includes a support connected to the lower surface and a piezoelectric ceramic element attached to the side of the support, it is possible to vibrate only a part of the diaphragm by applying a voltage to the selected piezoelectric ceramic element.

When the user touches the touch panel 602, the contacted position information is output, and the controller (not shown) receives the contact position information, and the vibration module 604 including the plurality of diaphragms of the touch panel 602. The vibration plate adjacent to the contact position is determined and selected, and a vibration signal is generated to output a vibration signal only to the piezoelectric ceramic elements connected to the selected vibration plate so that vibration can be generated only in a portion of the vibration module adjacent to the contact position. Accordingly, according to various touch types, such as multi-touch in which touch is made at a plurality of points on the touch panel or dragging of touch points, the vibration of the entire haptic device is not generated as in the prior art, but for each region of the haptic device. By controlling and generating vibrations independently, more diverse and realistic haptic feedback can be provided to the user. Of course, if necessary, the entire vibration module 604 may be driven to vibrate.

The vibration plate of the vibration module 604 is disposed to directly contact the lower surface of the touch panel 602 or the display panel 603, or the vibration transmission member is disposed between the vibration plate and the lower surface of the touch panel 602 or the display panel 603. Insertion can be arranged to transmit vibrations. On the other hand, the bottom plate or frame bottom surface of the vibration module 604 is in direct contact with the housing 605.

Sealing that foreign matter enters from the outside between the inner surface of the front cover portion 601 and the upper surface of the touch panel 602, the touch panel 602 and the vibration module inside together with the lower housing 605 An elastic member 606 may be included to stably support and receive 604 and the like. The elastic member 606 is formed in a ring shape, the cross section of which is circular or elliptical. The elastic member 606 may be made of a flexible and elastic material such as rubber or plastic to amplify the vibration generated by the vibration module 604 without attenuation.

Elasticity between the lower surface of the touch panel 602 or the display panel 603 of the haptic device and the lower upper surface of the housing 605 to stably support the touch panel 602 or the display panel 603. It may further include a member 607. The elastic member 607 may be made of a material having flexibility and elasticity such as a spring, rubber, plastic, foam, or the like, and may amplify the vibration generated by the vibration module 604 without attenuation.

7 is a plan view illustrating an arrangement of a vibration module in a haptic device according to another embodiment of the present invention. In the present invention, the plurality of vibration modules 702 and 703 are disposed on the same plane and accommodated in the housing 701. In recent years, the size of haptic devices such as smart phones, multimedia players, tablet PCs, netbooks, no-books, and game machines tends to increase. The vibration module according to the present invention inserts and inserts into a housing to suit the size of the haptic device. By doing so, the haptic device can be completed simply, and the haptic device of various sizes can be manufactured using the vibration module of the standardized size, thereby reducing the time and cost required to manufacture the haptic device.

What has been described above is only an exemplary embodiment of the vibration module for the haptic device and the haptic device using the same, the present invention is not limited to the above embodiment, as claimed in the claims below, Without departing from the gist of the present invention, anyone of ordinary skill in the art will have the technical idea of the present invention to the extent that various modifications can be made.

201, 601: front cover part
202 and 602: touch panel
203, 603: display panel
204, 300, 604, 702, 703: vibration module
205, 605, 701: housing
301: frame
302: fixed part
304, 401, 501: diaphragm
306: connection
307, 308, 402, 502: bottom plate
310, 320, 330, 340, 410, 420, 510, 520, 530, 540: support
311, 321, 331, 341, 411, 412, 421, 422, 511, 512, 521, 522,531,532,541,
542: piezoelectric ceramic element

Claims (21)

A frame comprising sidewalls defining an outer boundary;
A fixing part connected across the side walls facing each other of the frame;
A plurality of diaphragms branched and extending from the fixing part and formed to be separated from each other;
A plurality of supports connected to a lower surface of each end of each of the plurality of diaphragms;
Piezoelectric ceramic elements attached to sides of each of the plurality of supports; And
And a lower plate connected to lower ends of the plurality of supports and disposed at positions corresponding to ends of each of the plurality of diaphragms.
delete The vibration module of claim 1, wherein the plurality of supports are disposed perpendicular to the diaphragm.
The vibration module of claim 1, wherein the plurality of supports are inclined at a predetermined angle with respect to the diaphragm.
The vibration module of claim 1, 3 or 4, wherein the piezoelectric ceramic elements are attached to one or both sides of each of the plurality of supports.
The vibration module of claim 5, wherein the piezoelectric ceramic device is formed by stacking a plurality of piezoelectric ceramic layers.
The vibration module of claim 6, wherein the piezoelectric ceramic device is configured to vary in magnitude of vibration in accordance with the magnitude of an applied voltage.
The vibration module for a haptic device according to claim 1, wherein a connection portion having a width smaller than a width of the plurality of diaphragms is disposed between the fixing portion and the plurality of diaphragms.
The vibration module for a haptic device according to any one of claims 1, 3, and 4, wherein the fixing part is made of a vibration absorbing material or a vibration damping material so that vibrations of the plurality of vibration plates are mutually disconnected.
The vibration module of claim 1, 3 or 4, wherein the plurality of diaphragms and supports are made of metal or polymer.
The vibration module of claim 10, wherein a positioning groove of a support is formed on a lower surface of each end of each of the plurality of diaphragms.
The vibration module of claim 10, wherein each of the plurality of diaphragms and the support is integrally formed.
A front cover part;
A touch panel for sensing an external contact;
A frame including sidewalls defining an outer boundary, a fixed portion connected to the opposite sidewalls of the frame, a plurality of diaphragms branched from and extending from the fixed portion, and formed to be separated from each other, and ends of each of the plurality of diaphragms A plurality of supports connected to a lower surface, a piezoelectric ceramic element attached to each side of each of the plurality of supports, and a lower plate connected to a lower end of the plurality of supports and disposed at a position corresponding to an end of each of the plurality of diaphragms. And a vibration module configured to generate haptic feedback vibration corresponding to the external contact sensed by the touch panel.
A controller configured to generate a vibration signal to a piezoelectric ceramic element corresponding to a vibration plate adjacent to a contact position sensed by the touch panel among the plurality of vibration plates; And
Haptic device including a housing for receiving the touch panel, the vibration module and the control circuit.
The haptic device of claim 13, further comprising a display panel displaying image information.
The haptic device of claim 14, wherein the touch panel and the display panel are integrated.
delete The haptic device of claim 14, wherein the diaphragm is in direct contact with the touch panel or the display panel or via a vibration transmitting member.
The haptic device of claim 13, wherein the bottom plate is in direct contact with the housing.
The haptic device of claim 13, further comprising an elastic member positioned between an inner surface of the front cover portion and an upper surface of the touch panel.
The haptic device of claim 14, further comprising an elastic member positioned between a lower surface of the touch panel or the display panel and an upper surface of a bottom of the housing.
The haptic device of claim 13, wherein a plurality of the vibration modules are disposed on the same plane.

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