KR20100106074A - Tactile presentation interface device - Google Patents

Abstract

PURPOSE: An interface device in tactile sensation presentation is provided to vibrate a touch screen unit in one side and a parallel direction of the touch screen unit, thereby providing an operation feeling which changes the tactility of a contact part. CONSTITUTION: A tactile presentation interface device(1000) comprises a driving unit(120), a fixing unit(150), and a control unit(140). To change the tactility of a surface of a touch screen unit(110), the driving unit vibrates the touch screen unit in one side of the touch screen and in parallel direction. The driving unit is combined to one side of the touch screen. The fixing unit is fixed to other side of the touch screen. The control unit controls the operation frequency of the driving unit.

Description

Tactile Presentation Interface Device

The present invention relates to an interface device for tactile display.

The touch screen is a kind of input device that can transmit an input signal corresponding to the pressed position to an electronic device equipped with the touch screen by pressing a specific area with a stylus pen or a user's hand.

However, in the case of the touch screen, when the user presses a specific area of the touch screen, there is no feedback transmitted to the user, so the user cannot know whether the input is correctly made on the touch screen.

Recently, in order to cope with this, an electronic device equipped with a touch panel includes a vibration motor, and when a user manipulates the touch panel, a vibration motor operates to vibrate the entire electronic device. However, the user also does not know whether the feedback to the directly pressed area, there is a problem that the operation feeling of the touch screen is inferior.

The present invention provides a haptic interface device capable of providing feedback in the form of tactile to a user's manipulation of a touch screen unit.

According to an aspect of the present invention, the touch screen unit, the touch screen unit vibrating in a direction parallel to one surface of the touch screen unit so that the touch of the surface of the touch screen unit, the driving unit coupled to one side of the touch screen unit, the other side of the touch screen unit Provided is a tactile interface device including a fixing part for fixing and a control part for adjusting an operating frequency of a driving part.

Here, the operating frequency of the driving unit may be 1kHz or more, the operating frequency of the driving unit may be more than an audible frequency, and the driving unit may include a piezoelectric element.

The control unit may control the driving unit to cause the driving unit to vibrate the touch screen unit at different frequencies according to the touch position of the touch screen unit. The control unit divides a part of the touch screen unit into a virtual tactile display area, and the touch position of the touch screen unit. The driving unit may be controlled such that the driving unit vibrates the touch screen unit at different frequencies depending on whether the driving area is within the tactile display area.

Here, the tactile display interface device may further include an image display panel unit coupled to one surface of the touch screen unit. In this case, an icon is displayed on the image display panel unit, and the control unit is configured according to the position and shape of the icon. A part can be divided into a tactile area.

In addition, a plurality of icons are displayed on the image display panel unit, and the control unit may divide a part of the touch screen unit between adjacent icons into a tactile display area, an icon is displayed on the image display panel unit, and the control unit may display an edge of the icon. Accordingly, a part of the touch screen part may be partitioned into a tactile display area.

In addition, a scroll bar is displayed on the image display panel unit, and the control unit may discontinuously divide a part of the touch screen unit into a tactile display area along the direction in which the scroll bar extends. The scroll bar has an annular shape, and the control unit controls the scroll bar. Accordingly, a portion of the touch screen unit may be divided into a tactile display area in a radial form.

In addition, according to another aspect of the present invention, the touch screen unit, the first and the second oscillating the touch screen unit in a direction parallel to one surface of the touch screen unit so that the touch of the surface of the touch screen unit is changed, respectively Provided is a tactile interface device including a control unit for adjusting an operating frequency of a second driving unit and first and second driving units.

Here, the controller may control the first driver and the second driver such that the distance between both sides of the first and second drivers is changed.

In this case, an operating frequency of the first driving unit and the second driving unit may be 1 kHz or more, an operating frequency of the first driving unit and the second driving unit may be higher than or equal to an audible frequency, and the first driving unit and the second driving unit may include piezoelectric elements. Can be.

The controller may control the first driver and the second driver such that the first driver and the second driver vibrate the touch screen part at different frequencies according to the touch position of the touch screen part. The first driving unit and the second driving unit may be controlled to vibrate the touch screen unit at different frequencies according to whether the touch position of the touch screen unit is within the tactile display region. .

Here, the tactile display interface device may further include an image display panel unit coupled to one surface of the touch screen unit. In this case, an icon is displayed on the image display panel unit, and the control unit is a part of the touch screen unit according to the position and shape of the icon. Can be partitioned into a tactile display area.

In addition, a plurality of icons are displayed on the image display panel unit, and the control unit may divide a part of the touch screen unit between adjacent icons into a tactile display area, an icon is displayed on the image display panel unit, and the control unit may display an edge of the icon. Accordingly, a part of the touch screen part may be partitioned into a tactile display area.

In addition, a scroll bar is displayed on the image display panel unit, and the control unit may discontinuously divide a part of the touch screen unit into a tactile display area along the direction in which the scroll bar extends. The scroll bar has an annular shape, and the control unit controls the scroll bar. Accordingly, a portion of the touch screen unit may be divided into a tactile display area in a radial form.

According to an exemplary embodiment of the present invention, the touch screen may be vibrated in a direction parallel to one surface thereof to provide an operation feeling in which a touch of a portion that a user contacts is changed.

The features and advantages of the present invention will become apparent from the following drawings and detailed description of the invention.

Hereinafter, embodiments of the tactile display interface device according to the present invention will be described in detail with reference to the accompanying drawings, and in the following description with reference to the accompanying drawings, the same or corresponding components are given the same reference numerals, and duplicated thereto. The description will be omitted.

1 is a block diagram showing an interface device for tactile display according to an embodiment of the present invention. As illustrated in FIG. 1, the tactile display interface device according to an exemplary embodiment of the present invention may touch a vibration while touching the touch screen unit in a direction parallel to one surface of the touch screen unit such that the touch screen part and the touch surface of the touch screen part are changed. By including a driving unit coupled to one side of the screen unit, a fixing unit for fixing the other side of the touch screen unit, and a control unit for adjusting the operating frequency of the driving unit, it is possible to provide an operation feeling in which the user's touch is changed.

The haptic interface device 1000 may receive information by a user's touch, and may be an information input device that may provide an operation feeling in which a tactile touch of a part that a user contacts changes as a feedback thereof.

The haptic interface device 1000 may be, for example, a portable electronic device such as a mobile phone 400, a personal digital assistant (PDA), a portable multimedia player (PMP), an MPEG audio layer-3 (MP3) player, a navigation device, a monitor, In an electronic device such as an ATM (Auto Teller Machine), a game machine, a kiosk, and the like, when a user presses a specific position of the touch screen unit 110, the information about the pressing position is applied as an input unit capable of transmitting the information about the pressing position to the controller 140. Can be.

Here, when the tactile display interface device 1000 further includes an image display panel unit 130, the tactile display interface device 1000 may simultaneously perform the functions of the output unit and the input unit to which the interface device 1000 is applied. .

The image display panel 130 is coupled to one surface of the touch screen unit 110. The image display panel 130 is a portion capable of displaying an image, for example, such as an LCD panel, and may function as an output unit of an electronic device on which the interface device 1000 is mounted.

The image display panel 130 may be electrically connected to the controller 140, which will be described later, and displays various types of images according to the operation state of the electronic device equipped with the interface device 1000 when the tactile control is performed by the controller 140. can do.

The image display panel 130 may display an object to be selected by the user, for example, an icon 410 or a scroll bar 415.

The driver 120 may vibrate the touch screen 110 in the horizontal direction so that the touch of the surface of the touch screen 110 is changed. In this case, the horizontal direction may be a direction parallel to the other surface of the touch screen unit 110. In other words, one surface of the touch screen unit 110 may have an angle other than 90 degrees with respect to the Z axis. In this case, the movement direction of the touch screen unit 110 may mean an X axis or a Y axis.

For example, the driving unit 120 may be a piezoelectric element, may be formed in a bar shape, and may be coupled to one side of the touch screen unit 110. The piezoelectric element may implement various types of high frequency vibration according to the polarization direction, and in FIG. 1, may vibrate the touch screen 110 in the x direction.

The fixing unit 150 may be coupled to the other side of the touch screen unit 110 to constrain the movement of the other side of the touch screen unit 110 to fix the other side of the touch screen unit 110.

2 is a cross-sectional view illustrating an operation of the tactile display interface device 1000 according to an exemplary embodiment of the present invention. As illustrated in FIG. 2, the touch screen 110, the driver 120, and the image display panel 130 may be coupled to a frame 190 forming a frame of a device to which the interface device 1000 is applied. Can be.

In this case, the fixing unit 150 may be interposed between the frame 190 and the other side of the touch screen unit 110 to fix the other side of the touch screen unit 110 to the frame 190. The fixing part 150 may be, for example, an adhesive or a bolt interposed between the frame 190 and the other side of the touch screen part 110.

At this time, the support 192 may be coupled to one side of the frame 190. The support unit 192 may cover one side of the touch screen unit 110 to constrain the movement of the touch screen unit 110 in the Z direction. In addition, a vibration absorbing material may be interposed between the support part 192 and the driving part 120 to prevent the vibration generated from the driving part 120 from being transmitted to the frame 190.

The driving unit 120 vibrates in the X direction while the other side of the touch screen unit 110 is fixed, and the touch screen unit 110 and the image display panel unit 130 reciprocate in the Z direction as well as the reciprocating motion in the X direction. Exercise can occur simultaneously. Accordingly, the touch position of the surface of the touch screen unit 110 has relative speeds of Vx and Vz in the X-axis and Z-axis directions, respectively, with respect to the user's finger.

Due to the relative speed Vz, air interposed between one surface of the touch screen unit 110 and a finger may be compressed. In particular, when the vibration frequency in the Z direction of one surface of the touch screen unit 110 is 20 kHz or more, the compression of air generated between one surface of the touch screen unit 110 and the finger is between one surface of the touch screen unit 110 and the finger. By reducing the frictional force of the user, the user feels that the touch of one surface of the touch screen 110 is changed. This is called the air squeeze effect.

3 to 4 are diagrams showing the operation principle of the haptic interface device 1000 according to an embodiment of the present invention. As shown in FIG. 3, when the user touches the surface of the touch screen 110 and moves on the surface, the touch screen 110 is slower than the speed Vm at which the user's finger moves. If vibrating at Vv), the user may feel a friction force F in a direction opposite to the direction in which the finger moves along with a tactile feeling according to the texture of the surface of the touch screen unit 110.

However, as shown in FIG. 4, when the touch screen unit 110 vibrates at a faster speed Vv 'than the speed Vm' of the user's finger movement, the user The friction force F ′ in the same direction as the finger movement can be felt. In other words, the user may feel the touch such that the frictional force of the surface of the touch screen 110 is reduced.

On the other hand, there are several receptors on the human skin, and each receptor can transmit different information to the brain according to the frequency range. Among them, the Pacinian corpuscule, which receives vibrations, can detect vibrations in the 10 to 500 Hz range.

Therefore, the driving unit 120 vibrates the touch screen unit 110 by 500 Hz or more, so that the user can receive information that can be perceived as a change in the touch caused by the reduction of the frictional force of the surface of the touch screen unit 110 instead of the vibration. Can be provided to the user.

Depending on the user, the frequency of the range that can be recognized as vibration may be slightly different. For example, when the touch screen unit 110 vibrates at a frequency of 1 kHz or more, most users feel the touch of the surface of the touch screen unit 110. It can be recognized that this has changed.

In addition, when the limit frequency of the driving unit 120, for example, using a piezoelectric element at an audible frequency of 20 kHz or more, in the range of 600 kHz or less, the user cannot recognize the noise caused by the vibration of the touch screen unit 110. Only the information on which the touch of the surface of the touch screen 110 is changed may be recognized.

As a result, by fixing the other side of the touch screen unit 110, it is possible to implement a relative movement in the Z direction and the X direction between one surface and the finger of the touch screen unit 110, due to the relative motion in the horizontal direction described above The effect of reducing friction and the effect of reducing friction due to the air squeeze effect can be obtained simultaneously. Therefore, the user can feel the change of the touch of one surface of the touch screen 110 due to this more reliably.

Further, by fixing the other side of the touch screen unit 110, the vibration that may occur in the process that the vibration generated from one side of the touch screen unit 110 by the drive unit 120 to the other side of the touch screen unit 110 By minimizing the loss of the touch screen 110 it is possible to implement a change in the even touch over the entire surface of the touch screen (110).

The controller 140 may be electrically connected to the driver 120, and may adjust an operating frequency of the driver 120. The controller 140 may be electrically connected to the touch screen unit 110 and the image display panel unit 130 as well as the driving unit 120, and may control their operations.

The controller 140 may be implemented as a separate circuit to control the operation of the tactile display interface device 1000, and may be implemented as part of an apparatus for controlling the operation of the electronic device on which the tactile display interface device 1000 is mounted. It may be.

In an embodiment to be described later, the control unit 140 may be implemented as part of a control device of the mobile phone 400.

5 is a plan view illustrating a first operation of the tactile display interface device 1000 according to an exemplary embodiment of the present invention. As shown in FIG. 5, the operation of the tactile interface device 1000 according to an embodiment of the present invention will be described by taking an example in which the tactile interface device 1000 is applied to the mobile phone 400.

The tactile display interface device 1000 is applied to the mobile phone 400 to receive information by a user's operation, to output an operation state of the mobile phone 400 through an image display panel, and to provide a touch screen unit 110. It is possible to provide the user with a feeling of operation in which the touch is changed by the vibration of).

First, in the standby state (S100), the touch screen unit 110 detects whether there is a touch on the touch screen unit 110 by the user. In this case, the touch screen unit 110 transmits information about a user's touch position to the controller 140. If the user's touch is not detected, the controller 140 maintains the standby state S100.

Next, the controller 140 determines whether an input mark such as an icon 410 is displayed on the image display panel 130. Here, the input mark is an object displayed on the image display panel 130 to receive information by a user's manipulation, and may be, for example, an icon 410 or a scroll bar 415.

6 is an exploded perspective view showing a first operation of the haptic interface device 1000 according to an embodiment of the present invention. As illustrated in FIG. 6, when the icon 410 is displayed on the image display panel unit 130, the controller 140 may move a portion of the touch screen unit 110 according to the position and shape of the icon 410. By partitioning, the tactile display area 420 is set. (S400)

The tactile display area 420 is a region formed by partitioning a part of the touch screen unit 110. When there is a user's touch in the tactile display area 420, the touch screen unit 110 is driven by the driving unit 120. The touch of the surface of the) is changed, so that the user can say a part of the touch screen unit 110 that feels a different touch from other areas in the tactile display area 420.

The tactile display area 420 may be set in various forms according to the type and shape of the input mark. For example, as illustrated in FIG. 5, the touch screen unit 420 may correspond to the position and shape of the icon 410. 110 may be formed on.

Meanwhile, when an input mark such as an icon 410 is not displayed on the image display panel 130, the controller 140 returns to the standby state S100 and waits for a user's touch.

Meanwhile, the tactile display area 420 may be set in advance by a user's manipulation or by a designer's design, and at this time, determining whether an input mark is displayed on the image display panel 130 (S300). ) And setting the tactile display area 420 according to the input mark (S400) may be omitted.

In this case, the controller 140 receiving information about the touch position of the touch screen unit 110 determines whether the touch position to be described later is within the tactile display area 420 according to the preset tactile display area 420. The step S500 may be performed.

Next, the control unit 140 that receives the information on the touch position from the touch screen unit 110 determines whether the position is within the tactile display area 420 set in the above-described step, and the touch position is (S500). In the case of the tactile display area 420, an operation signal is applied to the driver 120 so that the touch is changed on one surface of the touch screen unit 110. (S600)

The operation signal may be set in advance by a user's manipulation or a designer's design, and may be set differently according to the type of the input mark. For example, when different types of icons 410 are displayed on the image display panel 130, different operation signals may be applied to each icon 410.

In this case, when a touch is made to the tactile display area 420 formed for each icon 410, the controller 140 may apply different preset operation signals.

The icon 410 and the scroll bar 415 may be set to different operation signals, and at this time, different operation signals may be applied. The controller 140 may provide various types of tactile feelings to the user by applying various types of operation signals preset to the driver 120.

On the other hand, if the user's touch position is not the tactile display area 420, the controller 140 returns to the standby state (S100). That is, when the user touches the touch screen unit 110 in an area other than the tactile display area 420, the user may not feel the change of the touch on the surface of the touch screen unit 110.

Next, the controller 140 measures the elapsed time after the operation signal is applied after the operation signal is applied to the driver 120. The control unit 140 determines whether the measured warning time is greater than or equal to the preset duration, and if the duration of the preset operation signal has not elapsed, continuously controlling the elapsed time of the operation signal. If the measurement and the duration of the measured operation signal is greater than or equal to the preset duration, it may be performed (S200) detecting whether the above-described touch.

That is, the user may feel the change of the touch in the tactile display area 420 of the touch screen unit 110 for a preset duration. In addition, when the tactile display interface device 1000 returns to the standby state when the user's touch is not maintained after the duration, the user's touch is maintained or a touch is made at another position. By continuously providing a change in the touch of the surface of the touch screen unit 110, it is possible to track the touch position of the user and provide a continuous change of the touch.

Next, a description will be given focusing on the difference of the sensation felt by the user according to the setting form of the tactile display area 420. In the following description, the operation of the haptic interface device 1000 according to an embodiment of the present invention may be performed by the above-described process, and a description thereof will be omitted.

7 is a plan view illustrating a second operation of the tactile display interface device 1000 according to an exemplary embodiment of the present invention. As illustrated in FIG. 7, when a plurality of icons 410 are displayed on the image display panel 110, the tactile display area 420 may distinguish the area where the icon 410 is displayed from other areas. It may be formed between adjacent icons 410.

In this case, when the touch position is outside the tactile display area 420, the controller 140 does not apply an operation signal to the driver 120, so that the user feels the original touch of the surface of the touch screen 110. can do.

Therefore, when the user's finger drags the plurality of icons 410, the user feels a different touch from the portion where the icon 410 is formed between the plurality of icons 410, the surface of the touch screen 110 is tactile You can feel as if you are partitioned into these different virtual regions.

8 is a plan view illustrating a third operation of the tactile display interface device 1000 according to an embodiment of the present invention. As illustrated in FIG. 8, the image display panel 130 may display a photo stored in the mobile phone 400, and display a plurality of icons 410 for selecting a photo on one side thereof in a length direction. Can be.

The plurality of icons 410 may be divided into a tactile display area 420. When the touch position of the touch screen 110 is in the tactile display area 420, the controller 140 may be connected to the driving unit 120. By applying the operation signal, the user may provide a feeling of operation such that the touch of the surface of the touch screen unit 110 is changed.

9 is a plan view illustrating a fourth operation of the tactile display interface device 1000 according to an embodiment of the present invention. As illustrated in FIG. 9, a plurality of icons 410 may be displayed on the image display panel 130, and the tactile display area 420 may have an annular shape along the edge of the icon 410. A portion of 110 can be partitioned.

When the touch position of the touch screen 110 is in the tactile display area 420, the touch screen 110 is vibrated, so that the user may perceive the touch of the boundary portion of the edge of the icon 410 differently. As a result, the user can visually recognize the icon 410 as well as the icon 410 by the touch.

10 is a plan view illustrating a fifth operation of the tactile display interface device 1000 according to an exemplary embodiment of the present invention. As illustrated in FIG. 10, the image display panel 130 may display a plurality of icons 410 extending in a horizontal direction in a vertical direction. In this case, the tactile display area 420 may be formed in a direction in which the icon 410 extends horizontally in a portion where the plurality of icons 410 are adjacent to each other.

Accordingly, when the user drags the surface of the touch screen 110 up and down, the user may feel a different touch in the area where the icon 410 is displayed and the area between the icon 410, and thus the image display panel unit 130. The operation feeling having a sense of unity with the image displayed on the screen can be provided.

11 is a plan view illustrating a sixth operation of the tactile display interface device 1000 according to an embodiment of the present invention. As illustrated in FIG. 11, when playing a sound source file stored in the mobile phone 400, the image display panel 130 may display a scroll bar 415 for adjusting a volume horizontally.

In this case, the tactile display area 420 may be discontinuously spaced apart from each other in the longitudinal direction in which the scroll bar 415 extends. Each of the tactile display areas 420 may be spaced apart from each other along the scroll bar 415 to partition a part of the touch screen unit 110.

Accordingly, when the user drags the scroll bar 415 to adjust the volume, the user may continuously feel a different touch while the user's finger follows the scroll bar 415, so that the user may feel a changing operation.

12 is a plan view illustrating a sixth operation of the haptic interface device 1000 according to an embodiment of the present invention. As illustrated in FIG. 12, when playing a sound source file stored in the mobile phone 400, a scroll bar 415 having an annular shape capable of adjusting a volume may be displayed on the image display panel 130.

In this case, as described above, the tactile display area 420 is disposed radially along the circular direction in which the scroll bar 415 extends on the touch screen 110 on which the scroll bar 415 is displayed, and discontinuously. It is formed spaced apart from each other, and the user's fingers feel different touch while moving along the annular scroll bar 415, so that the user can feel the changing operation feeling.

FIG. 13 is a diagram illustrating a tactile display interface device 2000 according to another embodiment of the present invention. As shown in FIG. 13, the tactile display interface device 2000 according to another exemplary embodiment of the present invention may include a touch screen unit 110 such that the touch of the touch screen 110 and the touch screen 110 may be changed. Vibrating the touch screen 110 in a direction parallel to one surface of the 110, the first and second drivers 120 and 122 and the first and second drivers coupled to both sides of the touch screen 110, respectively ( By including the control unit 140 to adjust the operating frequency of the 120, 122, it is possible to provide a feeling of operation in which the touch of the portion touched by the user changes.

The operation process of the tactile interface device 2000 according to the present embodiment may be the same as the operation process of the tactile interface device 1000 according to the embodiment described above, and according to the embodiment of the present invention described above. The operation of the driver 120 of the haptic interface device 1000 may correspond to the operations of the first driver 120 and the second driver 122 of the tactile interface device 2000 according to the present embodiment. Hereinafter, the structure of the haptic interface device 2000 according to the present embodiment will be described based on the difference.

The first driving unit 120 and the second driving unit 122 may be coupled to both sides of the touch screen unit 110, respectively. The first driver 120 and the second driver 122 are electrically connected to the controller 140, and may be controlled by their controller 140 in their operation.

14 is a cross-sectional view showing the operation of the haptic interface device 2000 according to another embodiment of the present invention. As illustrated in FIG. 14, the touch screen 110, the first driver 120, the second driver 122, and the image display panel 130 are framed by the device to which the interface device 2000 is applied when haptic. It may be coupled to the frame 190 forming a.

In this case, the frame 190 may be formed with a support 192 that can restrain movement in the Z direction on both sides of the touch screen unit 110. The support 192 may be coupled to the frame 190 to cover edges of both sides of the touch screen unit 110.

Here, for example, a dust absorbing material is interposed between the support part 192, the first driver part 120, and the second driver part 122, so that the vibration of the first driver part 120 and the second driver part 122 is frame 190. ) Can be prevented from being transmitted to the touch screen, and the touch screen 110 can be prevented from moving in the X direction.

The first driver 120 and the second driver 122 may include piezoelectric elements, and vibration directions of the first driver 120 and the second driver 122 may be determined according to the polarization direction of the piezoelectric element. . In the present exemplary embodiment, the first driving unit 120 and the second driving unit 122 may vibrate in the X direction, and the control unit 140 may include the first driving unit 120 and the second driving unit 122 as the touch screen unit ( The first driver 120 and the second driver 122 may be controlled to change the distance between both sides of the 110.

That is, the first driving unit 120 and the second driving unit 122 may move in a direction adjacent to each other, and may repeatedly perform a movement to move away from each other. As a result, both sides of the touch screen unit 110 repeats the movement of the distance between them is closer to again.

Therefore, the first driving unit 120 and the second driving unit 122 generates vibrations on both sides of the touch screen unit 110, so that the vibrations can be evenly transmitted over the entire touch screen unit 110, and the user touches the touch panel 110. It is possible to detect a change in the feel evenly across the screen unit 110.

It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit or scope of the invention as defined in the appended claims. It will be understood that the invention may be varied and varied without departing from the scope of the invention.

1 is a block diagram showing an interface device for tactile display according to an embodiment of the present invention.

2 is a cross-sectional view showing the operation of the haptic interface device according to an embodiment of the present invention.

3 to 4 is a view showing the operation principle of the haptic interface device according to an embodiment of the present invention.

5 is a plan view showing a first operation of the haptic interface device according to an embodiment of the present invention.

Figure 6 is an exploded perspective view showing a first operation of the haptic interface device according to an embodiment of the present invention.

7 is a plan view showing a second operation of the haptic interface device according to an embodiment of the present invention.

8 is a plan view showing a third operation of the haptic interface device according to an embodiment of the present invention.

9 is a plan view showing a fourth operation of the haptic interface device according to an embodiment of the present invention.

10 is a plan view showing a fifth operation of the haptic interface device according to an embodiment of the present invention.

11 is a plan view showing a sixth operation of the haptic interface device according to an embodiment of the present invention.

12 is a plan view showing a sixth operation of the haptic interface device according to an embodiment of the present invention.

13 is a block diagram showing an interface device for a tactile display according to another embodiment of the present invention.

14 is a cross-sectional view showing the operation of the haptic interface device according to another embodiment of the present invention.

<Description of the symbols for the main parts of the drawings>

110: touch screen unit 120, 122: drive unit

130: image display panel 140: control unit

1000: tactile interface device

Claims (25)

A touch screen unit; A driving unit coupled to one side of the touch screen unit to vibrate the touch screen unit in a direction parallel to one surface of the touch screen unit so that the touch of the surface of the touch screen unit is changed; A fixing part for fixing the other side of the touch screen part; And And a controller for controlling an operating frequency of the driving unit. The method of claim 1, The operating frequency of the drive unit is a haptic interface device, characterized in that more than 1kHz. The method of claim 2, The operating frequency of the drive unit is a haptic interface device, characterized in that more than the audible frequency. The method of claim 1, And the driving unit includes a piezoelectric element. The method of claim 1, The control unit And the driving unit controls the driving unit to vibrate the touch screen unit at different frequencies according to the touch position of the touch screen unit. The method of claim 5, The control unit A part of the touch screen unit is divided into a virtual tactile display area, And the driving unit controls the driving unit to vibrate the touch screen unit at a different frequency depending on whether the touch position of the touch screen unit is within the tactile display area. The method of claim 6, And a video display panel unit coupled to one surface of the touch screen unit. The method of claim 7, wherein The icon is displayed on the image display panel unit, The control unit And a portion of the touch screen unit divided into the tactile display area according to the position and shape of the icon. The method of claim 7, wherein A plurality of icons are displayed on the image display panel unit. The control unit And a part of the touch screen unit between adjacent icons to the tactile display area. The method of claim 7, wherein The icon is displayed on the image display panel unit, The control unit And a part of the touch screen part divided into the tactile display area along an edge of the icon. The method of claim 7, wherein A scroll bar is displayed on the image display panel unit. The control unit And a portion of the touch screen portion discontinuously divided into the tactile display area along a direction in which the scroll bar extends. The method of claim 11, The scroll bar has an annular shape, The control unit And a portion of the touch screen part divided into the tactile display area in a radial form along the scroll bar. A touch screen unit; First and second drivers configured to vibrate the touch screen in a direction parallel to one surface of the touch screen so that the touch of the surface of the touch screen is changed, and coupled to both sides of the touch screen; And And a controller for controlling operating frequencies of the first and second drivers. The method of claim 13, The control unit And the first driver and the second driver control the first driver and the second driver such that a distance between both sides of the touch screen part changes. The method of claim 13, And an operating frequency of the first driver and the second driver is 1 kHz or more. The method of claim 15, And an operating frequency of the first driver and the second driver is equal to or greater than an audible frequency. The method of claim 13, And the first driver and the second driver comprise a piezoelectric element. The method of claim 13, The control unit And the first driving unit and the second driving unit control the first driving unit and the second driving unit to vibrate the touch screen unit at different frequencies according to the touch position of the touch screen unit. The method of claim 18, The control unit A part of the touch screen unit is divided into a virtual tactile display area, The first driving part and the second driving part are controlled to vibrate the touch screen part at different frequencies according to whether the touch position of the touch screen part is within the tactile display area. A touch-sensitive interface device. The method of claim 19, And a video display panel unit coupled to one surface of the touch screen unit. The method of claim 22, The icon is displayed on the image display panel unit, The control unit And a portion of the touch screen unit divided into the tactile display area according to the position and shape of the icon. The method of claim 21, A plurality of icons are displayed on the image display panel unit. The control unit And a part of the touch screen unit between adjacent icons to the tactile display area. The method of claim 21, The icon is displayed on the image display panel unit, The control unit And a part of the touch screen part divided into the tactile display area along an edge of the icon. The method of claim 21, A scroll bar is displayed on the image display panel unit. The control unit And a portion of the touch screen portion discontinuously divided into the tactile display area along a direction in which the scroll bar extends. The method of claim 24, The scroll bar has an annular shape, The control unit And a portion of the touch screen part divided into the tactile display area in a radial form along the scroll bar.

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