JP2008130055A - Touch panel display device, driving method, and electronic apparatus - Google Patents

Abstract

Provided are a touch panel display device, a driving method, and an electronic device that are advantageous in enhancing a feeling of use.
A drive signal S is supplied to an actuator 22, and the movable panel unit 14 vibrates along the thickness direction of the movable panel unit 14 in accordance with the waveform of the drive signal S. The drive signal supplied from the actuator drive control unit 36 to the actuator 22 includes a first waveform W1 having a first frequency that generates a tactile sensation due to vibration at the user's fingertip in contact with the touch panel 26, and the movable panel unit 14. 2 has a second waveform W2 having a second frequency higher than the first frequency for generating a predetermined sound.
[Selection] Figure 6

Description

  The present invention relates to a touch panel display device, a driving method, and an electronic device.

  A touch panel display device used as an input device or an input / output device can freely configure an input screen by software. Therefore, the touch panel display device has flexibility that cannot be obtained by an input device configured using a mechanical switch. Since it can be compactly configured and has many advantages such as low frequency of mechanical failure, it is now widely used from operation panels of various relatively large machines to very small portable device input / output devices. It's being used.

In many touch panel display devices, the fingertip of the user who operates the touch panel device only touches a flat and smooth panel surface. Therefore, the click feeling felt by the fingertip when operating an input device configured using a mechanical switch. Thus, there is no feedback to the user by the sense of touch of the fingertip, which makes the operation feeling of the device not relied on. In order to improve this point, a touch panel display device in which a tactile sensation is fed back to the fingertip of the user who operates is disclosed (see Patent Document 1).
This touch panel display device is configured to generate a tactile sensation at the user's fingertip by vibrating the touch panel with which the user's fingertip contacts using an actuator.

JP 2003-288158 A

By the way, when the touch panel vibrates by the actuator, an acoustic noise corresponding to the vibration frequency is generated from the touch panel, and there is a concern that the user may feel uncomfortable or uncomfortable.
The present invention has been made in view of such circumstances, and an object of the present invention is to provide a touch panel display device that is advantageous in enhancing the feeling of use without giving a user a sense of incongruity or discomfort, a driving method thereof, and such a device. An object of the present invention is to provide an electronic device having a touch panel display device.

In order to achieve the above object, the present invention provides a flat panel-shaped movable panel unit having a display panel, a touch panel, a movable support unit that supports the movable panel unit on a support structure in a displaceable manner, and a drive signal. An actuator that drives and vibrates the movable panel unit, and an actuator drive control unit that drives and controls the actuator by generating the drive signal and supplying the actuator to the actuator. A touch panel display device that generates a tactile sensation on a user's fingertip that is in contact with the touch panel that is the panel surface of the movable panel unit by vibrating the movable panel unit, wherein the drive signal has a first waveform and Consists of two waveforms with a second waveform, The first waveform has a first frequency that generates a tactile sensation caused by vibration on a user's fingertip that is in contact with the touch panel, and the second waveform generates a predetermined sound from the movable panel unit. It has the 2nd frequency of a value higher than a 1st frequency, It is characterized by the above-mentioned.
The present invention also provides a display panel, a flat movable panel unit provided with a touch panel, a movable support unit that supports the movable panel unit on a support structure so that the movable panel unit can be displaced, and a drive signal supplied thereto. A driving method of a touch panel display device comprising an actuator that drives and vibrates a movable panel unit, wherein a touch sensation caused by vibration is generated at a user's fingertip that is in contact with the touch panel that is a panel surface of the movable panel unit. Generating a first waveform having a frequency of 1 and generating a second waveform having a second frequency higher than the first frequency for generating a predetermined sound from the movable panel unit; By supplying a drive signal including two waveforms, a waveform of 1 and the second waveform, to the actuator The actuator drive control, characterized in that so as to generate acoustic together to generate a haptic to the user's fingertip in contact with the touch panel.
The present invention also relates to an electronic device having a device-side housing, wherein the device-side housing includes a touch panel display device, and the touch panel display device includes a display panel and a flat movable panel including a touch panel. A unit, a movable support that supports the movable panel unit on a support structure so that the movable panel unit can be displaced, an actuator that drives and vibrates the movable panel unit by being supplied with a drive signal, and generates the drive signal An actuator drive control unit that drives and controls the actuator by supplying the actuator to the actuator, and the actuator vibrates the movable panel unit to contact the touch panel that is a panel surface of the movable panel unit. A tactile sensation at the fingertip The drive signal includes two waveforms of a first waveform and a second waveform, and the first waveform is a tactile sensation caused by vibration on a fingertip of a user who is in contact with the touch panel. And the second waveform has a second frequency that is higher than the first frequency that generates a predetermined sound from the movable panel unit. Features.

  According to the present invention, when the movable panel unit is vibrated at the first frequency to generate tactile feedback, the movable panel unit is vibrated at the second frequency higher than the first frequency. Since sound is generated from the unit, the acoustic noise due to the first frequency generated from the movable panel unit can be made inconspicuous, which is advantageous in enhancing the feeling of use.

(First embodiment)
The touch panel display device and its driving method according to the embodiment of the present invention will be described below.
FIG. 1 is a cross-sectional view showing a configuration of a touch panel display device 10 according to an embodiment of the present invention.
The touch panel display device 10 includes a housing 12 (support structure), a movable panel unit 14, a movable support member 16, a first spacer block 18, a second spacer block 20, an actuator 22, and an actuator drive control unit 36 (FIG. 2). For example).

As shown in FIG. 1, the housing 12 is configured to include a rectangular plate-like bottom wall 12A.
The movable panel unit 14 includes a display panel 24 that displays an image when a control signal for displaying an image is supplied, and a touch panel 26 that is provided integrally with the display surface 2402 of the display panel 24. It has a rectangular plate shape (flat plate shape).
In the present embodiment, the display panel 24 is composed of a transmissive liquid crystal display device, and includes a display body 24A composed of a liquid crystal layer and two glass substrates sandwiching the liquid crystal layer, and a display surface 2402 of the display body 24A. And a backlight 24B that illuminates the display body 24A from the back surface 2404 toward the display surface 2402, and the backlight 24B is integrally attached to the display body 24A. ing.
The display panel 24 may be a reflective liquid crystal display device or an organic EL display device that does not require a backlight.
The touch panel 26 is composed of, for example, two transparent PET films and a so-called film-film type touch panel in which a transparent electrode film is formed between the two films, and the movable panel unit 14 can be thinned. It has been.
The touch panel 26 has a size that covers the entire area of the display surface 2402, and is provided integrally with the display panel 24 by being overlaid on the display surface 2402 and adhered by an adhesive or the like.
Therefore, in the present embodiment, the surface 1402 of the movable panel unit 14 is configured by the surface of the touch panel 26, and the back surface 1404 of the movable panel unit 14 is configured by the back surface of the backlight 24B.

The movable support member 16 has a bottom that can be displaced in the thickness direction of the movable panel unit 14 with the movable panel unit 14 parallel to the bottom surface 1202 of the bottom wall 12A and the surface 1402 facing the opposite side of the bottom wall 12A. It is supported on the wall 12A and is made of an elastic material.
In the present embodiment, the movable support member 16 is provided between the movable panel unit 14 and the bottom surface 1202 at the four corners of the back surface 1404 of the movable panel unit 14.
Such an elastic material is desirably such that the movable panel unit 14 can be displaced as easily as possible. For this purpose, it is preferable that the elastic material is made of a polymer gel material having an extremely low hardness.
For example, a sheet-like ultra-low hardness polymer gel material provided by Kitagawa Kogyo Co., Ltd. under the product name “KG Gel (trademark)” is particularly suitable as a material for the movable support member 16. is there. A specific example will be described. For example, by cutting a sheet of “KG Gel (trademark)” having a thickness of 1 mm into 2 mm squares, an elastic body block having a height of 1 mm is formed, and the upper and lower sides of the elastic body block are formed. The movable support member 16 of the movable panel unit 14 can be suitably configured by bonding both surfaces to the bottom wall 12A and the four corners of the back surface 1404 of the movable panel unit 14 using a double-sided adhesive sheet or the like.
Examples of suitable materials other than the polymer gel material as the elastic material include various rubber materials, soft polyethylene, and silicone resin.

The actuator 22 is disposed between the back surface 1404 of the movable panel unit 14 and the bottom wall 12A.
As the actuator 22, an elongated plate-like bending displacement type piezoelectric actuator can be used. As this type of piezoelectric actuator, a bimorph type piezoelectric actuator and a monomorph type piezoelectric actuator are known, and among them, the bimorph type is preferable because it can exhibit a stronger driving force. In the piezoelectric piezoelectric actuator and the laminated bimorph piezoelectric actuator, it can be said that the former can be driven with a lower voltage and is therefore more suitable for use in mobile electronic devices.
Therefore, in the present embodiment, a laminated bimorph type piezoelectric actuator is used as the actuator 22.

As shown in FIG. 1, the long and thin plate-shaped laminated bimorph piezoelectric actuator 22 is connected to the bottom wall 12A via two first spacer blocks 18 at both ends in the longitudinal direction. The spacer block 18 and each end portion of the actuator 22 and the first spacer block 18 and the bottom wall 12A are bonded using a double-sided adhesive tape.
Further, the actuator 22 is connected to the center of the back surface 1404 of the movable panel unit 14 via the second spacer block 20 at the center in the longitudinal direction, and between the second spacer block 20 and the actuator 22, and The second spacer block 20 and the back surface 1404 of the movable panel unit 14 are bonded using a double-sided adhesive tape.
When a voltage (drive signal) is applied to the laminated bimorph piezoelectric actuator 22 attached between the bottom wall 12A (housing 12) and the movable panel unit 14 in this way, the actuator 22 generates a bending displacement. The central portion in the longitudinal direction is displaced in the direction indicated by the arrow A in FIG. 1, and the movable panel unit 14 is displaced in the direction indicated by the arrow B.
The direction and magnitude of this displacement correspond to the polarity and magnitude of the applied voltage. Further, the direction of displacement of the movable panel unit 14 thus generated is a direction along the thickness direction of the movable panel unit 14. Therefore, the actuator 22 drives the movable panel unit 14 in a direction along its thickness direction.
The attachment structure of the actuator 22 to the bottom wall 12A is not limited to a so-called both-end support structure in which both ends of the actuator 22 in the longitudinal direction are attached to the bottom wall 12A as in the present embodiment. A so-called cantilever structure in which only one end is attached to the bottom wall 12 </ b> A may be used. However, if a double-supported structure is used as in the present embodiment, vibration generated in the actuator 22 is efficiently generated compared to the cantilever structure. This is advantageous in reducing the power consumption of the actuator 22.

In addition, the structure of the movable panel unit 14 is not restricted to what was demonstrated above.
For example, instead of integrating the touch panel 26 and the display panel 24, the display panel 24 may be fixed on the housing 12 (support structure), and the movable panel unit 14 may be configured with only the touch panel 26.
In such a case, the movable panel unit 14 is arranged so that the touch panel 26 constituting the movable panel unit 14 is positioned so as to overlap the display panel 24.
According to this configuration, only the touch panel 26 is supported so as to be displaceable in the thickness direction of the movable panel unit 14 (direction perpendicular to the surface of the touch panel 26).

FIG. 2 is a block diagram illustrating a control unit and an electronic circuit that are components of the touch panel display device 10.
Reference numeral 30 denotes a control system for an electronic device equipped with the touch panel display device 10, and a control unit and an electronic circuit of the touch panel display device 10 are under the control of the control system 30.
The control unit and the electronic circuit of the touch panel display device 10 are connected to the touch panel circuit 32 connected to the touch panel 26 that is one component of the movable panel unit 14 and the display panel 24 that is the other component of the movable panel unit 14. The LCD drive circuit 34 and the actuator drive control unit 36 that controls the drive of the actuator 22 are included.

The touch panel circuit 32 is a circuit attached to a general touch panel, and by processing a signal obtained from the touch panel, a user's fingertip touches the panel surface of the touch panel (the surface 1402 of the movable panel unit 14). Generate a signal that represents the location of
In addition, when the touch panel 26 can detect the contact pressure, the touch panel circuit 32 also generates a signal indicating the contact pressure. If necessary, the touch panel circuit 32 indicates the contact position on the panel surface. The signal is further processed to generate a signal representing the moving speed and acceleration of the fingertip in contact with the panel surface.
A signal generated by the touch panel circuit 32 is supplied to the control system 30 as a touch panel input signal.
The LCD drive circuit 34 is a circuit attached to a general liquid crystal display panel, and drives the display panel 24 according to a control signal received from the control system 30 to perform visual display.

  The actuator drive control unit 36 includes a one-chip computer having a central processing unit and a memory, and an electronic circuit, and includes an interface 38 for receiving a control signal from the control system 30. The control signal received from the control system 30 includes an output timing signal and a waveform selection signal. The actuator drive control unit 36 includes a memory 40, and the memory 40 stores data (waveform data) necessary for waveform generation corresponding to each of a plurality of waveforms. The actuator drive control unit 36 further includes a waveform generation mechanism 42, an output signal transmission circuit 44, and a power amplifier 46.

The waveform generation mechanism 42 is a mechanism configured by software, reads data corresponding to the waveform designated by the waveform selection signal from the memory 40, and generates a waveform according to the read waveform data. The output signal transmission circuit 44 transmits an output signal having a waveform generated by the waveform generation mechanism 42 over a period specified by the output timing signal.
The power amplifier 46 amplifies the output signal of the output signal transmission circuit 44 and supplies it as a drive signal S to the piezoelectric actuator 22.

The specific example of the waveform produced | generated by the waveform production | generation mechanism 42 was shown to (A)-(D) of FIG. As is apparent from the figure, they are vibration waveforms, and the amplitude, period, and waveform may be constant or may vary. The waveform data stored in the memory 40 includes data relating to amplitude and period. The waveform data of the waveform designated by the waveform selection signal is read from the waveform data corresponding to the plurality of waveforms stored in the memory 40, and the drive signal S having the waveform is supplied to the actuator 22. Therefore, the movable panel unit 14 vibrates along the thickness direction of the movable panel unit 14 in accordance with the waveform of the drive signal S.
Then, the vibration of the movable panel unit 14 generates a tactile sensation according to the waveform of the drive signal S at the fingertip of the user touching the surface 1402 (panel surface) of the movable panel unit 14. Therefore, in other words, the actuator drive control unit 36 drives the movable panel unit 14 to vibrate with a vibration pattern selected from a plurality of predetermined vibration patterns, and the plurality of predetermined vibrations. The pattern is to generate different tactile sensations on the user's fingertips that are in contact with the panel surface of the movable panel unit 14.

Next, setting of the vibration frequency of the movable panel unit 14 will be described.
The inventors conducted an experiment in which the vibration frequency and the amplitude of the movable panel unit 14 are changed in a plurality of stages to measure how clearly the subject feels a tactile sensation on the finger.
4 and 5 show the experimental results, and FIG. 4 is an explanatory diagram showing the experimental results of evaluating the degree of recognition as a tactile sensation when the vibration frequency and amplitude of the movable panel 14 are changed in a plurality of stages. FIG. 5 is a diagram showing the result of FIG. 4 as a three-dimensional graph.
When the movable panel unit 14 is vibrated, the evaluation value recognized as a tactile sensation is a five-level evaluation of level 1 to level 5.
That is, level 1 is quite small as a tactile sensation, and is indicated by a symbol x in FIG.
Level 2 is small as a tactile sensation, and is indicated by a symbol Δ in FIG.
Level 3 corresponds to the touch when a reference switch is operated. In FIG. 4, levels 3 to 5 are indicated by a symbol “◯”.
Level 4 is great as a tactile sensation.
Level 5 is quite large as a tactile sensation.
Further, as shown in FIG. 4, the amplitude is set in four stages of 5 μm, 10 μm, 20 μm, and 30 μm, and the frequency is set in six stages of 50 Hz or less, 100 Hz, 200 Hz, 300 Hz, 400 Hz, 500 Hz or more.

As shown in FIGS. 4 and 5, it is understood that a larger amplitude is preferable in order to give a clear feeling.
The evaluation value is high when the vibration frequency is 50 Hz or more and 400 Hz or less, and the evaluation value is higher when the vibration frequency is 100 Hz or more and 300 Hz or less. Therefore, in order to give a feeling clearly, the frequency of vibration is preferably 50 Hz or more and 400 Hz or less, and more preferably 100 Hz or more and 300 Hz or less.

Next, a configuration for making acoustic noise generated from the movable panel unit 14 that is the gist of the present invention inconspicuously and a method for driving the touch panel display device 10 will be described.
6A and 6B are waveform diagrams of the drive signal S supplied to the actuator 22, wherein FIG. 6A is a waveform diagram in the conventional apparatus, and FIGS. 6B to 6D are waveform diagrams in the apparatus of the present embodiment. The time t is taken, and the voltage V which is the output value of the drive signal is taken on the vertical axis.
As shown in FIG. 6A, in the conventional apparatus, the drive signal supplied from the actuator drive control unit 36 to the actuator 22 is a first frequency that generates a tactile sensation due to vibration at the fingertip of the user in contact with the touch panel 26. It is comprised only by the 1st waveform W1 which has.
The first frequency is the above-described frequency of 50 Hz to 400 Hz or 100 Hz to 300 Hz.
Therefore, the movable panel unit 14 vibrates at the first frequency, and acoustic noise is generated from the movable panel unit 14 due to the vibration.
If the first frequency is, for example, 50 Hz or more and 400 Hz or less, the frequency of the acoustic noise is also 50 Hz or more and 400 Hz or less. Therefore, although the acoustic noise has a low frequency, for example, it becomes a sound such as “buzz”, which may be annoying and uncomfortable for the user.

On the other hand, in the present embodiment, as shown in FIG. 6B, the drive signal supplied from the actuator drive control unit 36 to the actuator 22 is caused by vibration on the fingertip of the user who is in contact with the touch panel 26. A first waveform W1 having a first frequency for generating a tactile sensation, and a second waveform W2 having a second frequency higher than the first frequency for generating a predetermined sound from the movable panel unit 14; It has two waveforms.
In the present embodiment, the generation of the drive signal by the actuator drive control unit 36 is performed so that the first waveform W1 is generated following the second waveform W2.
The second frequency is generated when the first waveform W1 is supplied to the movable panel unit 14 by the sound generated from the movable panel unit 14 when the second waveform W2 is supplied to the movable panel unit 14. It is preferable that the frequency is suitable for making the acoustic noise inconspicuous, in other words, the frequency that is easily perceived by human hearing.
Hereinafter, what band is preferable as the second frequency will be described.

FIG. 8 is a diagram showing an equal loudness level curve standardized in 2003 as a new ISO standard. In FIG. 8, the broken line indicates the old standard curve, and the solid line indicates the new standard curve.
The equal loudness level curve is a frequency characteristic created by connecting sound pressure levels (equal loudness levels) at which sounds of various frequencies can be heard in the same sense (loudness).
As shown in FIG. 8, it can be seen that a frequency of 0.4 kHz or more and 6 kHz or less is a frequency that is easy to be felt by humans, and that a frequency of 0.8 kHz or more and 2 kHz or less is a frequency that is easy for humans to feel.
Therefore, in the present embodiment, the second frequency is preferably a frequency of 0.4 kHz to 6 kHz, and more preferably a frequency of 0.8 kHz to 2 kHz.
Further, as described above, a comparison between the acoustic noise generated at the first frequency (for example, 50 Hz to 400 Hz) and the acoustic noise generated at the second frequency (0.4 kHz to 6 kHz) is shown in FIG. As is apparent from the above, it is clear that the human auditory sense is much easier to feel the sound of the second frequency than the sound noise of the first frequency.

In order to generate the drive signal S having the first waveform W1 and the second waveform W2, the waveform data of the first waveform W1 and the second waveform W2 are stored in the memory 40. As described above, the waveform data is read from the memory 40 by the waveform generation mechanism 42, and the read waveform data is given to the output signal transmission circuit 44, whereby the drive signal S generated by the output signal transmission circuit 44 is obtained. What is necessary is just to supply to the actuator 22 via the power amplifier 46.
In addition, the method of generating the drive signal including the first waveform W1 and the second waveform W2 is not limited to this example, and various conventionally known waveform generation methods are used. Is possible.

According to the present embodiment, as shown in FIG. 6B, the first waveform W1 of the first frequency is generated following the second waveform W2 of the second frequency and supplied to the actuator 22. Thus, since the user feels the sound of the second frequency higher than the first frequency as a loud sound, it becomes difficult to perceive the acoustic noise of the first frequency audibly, in other words, the sound of the first frequency. Noise is not audibly noticeable by the sound of the second frequency.
Specifically, from the movable panel 14 that vibrates at the second frequency, a relatively high level similar to a warning sound or a beep sound that is generally used in an electronic device, such as “beep” or “pico”. When the sound of the frequency is generated, the relatively low frequency acoustic noise such as “buzz” generated from the movable panel 14 that vibrates at the first frequency becomes inconspicuous.
Therefore, it is advantageous in enhancing the feeling of use without causing the user to feel uncomfortable or uncomfortable.

Although FIG. 6B shows the case where the first waveform W1 is supplied to the actuator 22 following the second waveform W2, as shown in FIG. 6C, following the first waveform W1. Even if the second waveform W2 is supplied to the actuator 22, the same effect as described above can be obtained.
As shown in FIG. 6D, the same effect as described above can be obtained even if the second waveform W2, the first waveform W1, and the second waveform W2 are supplied to the actuator 22 in this order.
Alternatively, even when the second waveform W2 is generated at least once in the intermediate portion of the first waveform W1, the same effect as described above can be obtained.
In short, the drive signal supplied from the actuator drive control unit 36 to the actuator 22 is movable with a first waveform W1 having a first frequency that generates a tactile sensation caused by vibration at the fingertip of the user in contact with the touch panel 26. It is only necessary to have two waveforms, the second waveform W2 having a second frequency higher than the first frequency for generating a predetermined sound from the panel unit 14.

FIG. 7 is a detailed waveform diagram of the drive signal when the second waveform W2, the first waveform W1, and the second waveform W2 are supplied to the actuator 22 in this order.
In this case, the first waveform W1 is a sine wave and is generated for one period.
The second waveform W2 generated before the first waveform W1 and the second waveform W2 generated after the first waveform W1 have slightly different frequencies, and the two second waveforms before and after the first waveform W1. Since the sound such as “Piro” is generated from the movable panel unit 14 that vibrates due to W2, the acoustic noise such as “buzz” generated from the movable panel unit 14 that vibrates due to the first waveform W1 becomes inconspicuous. This is advantageous in enhancing the feeling of use without causing the user to feel uncomfortable or uncomfortable.
6B to 6D, the period in which the second waveform W2 is generated is shorter than the period in which the first waveform W1 is generated, and the example illustrated in FIG. Then, the period in which the second waveform W2 is generated is longer than the period in which the first waveform W1 is generated.
However, the generation periods of the first and second waveforms W1 and W2 are arbitrary, and the generation periods of the first and second waveforms W1 and W2 may be the same. In short, it is only necessary to make the acoustic noise of the first frequency inaudibly inconspicuous by the sound of the second frequency.
Further, the second frequency of the second waveform W2 does not have to be a single frequency. In other words, it is needless to say that the second waveform W2 does not need to be formed of a single frequency component and may be formed of a plurality of frequency components. In short, it is only necessary to make the acoustic noise of the first frequency inaudibly inconspicuous by the sound of the second frequency.

Further, when the first waveform W1 constituting the drive signal is located at the beginning of the drive signal, the change in the waveform at the rising portion of the first waveform W1, in other words, at the zero cross portion where the drive signal rises from zero. Is steep.
Therefore, a signal having a high frequency component higher than the first frequency of the first waveform W1 is generated at the rising portion of the first waveform W1, and the movable panel unit 14 vibrates due to the signal of the high frequency component. Then, there is a concern that acoustic noise having a frequency higher than the first frequency is generated from the movable panel unit 14.
When the first waveform W1 constituting the drive signal is located at the end of the drive signal, the waveform at the falling portion of the first waveform W1, in other words, at the zero cross portion where the drive signal falls to zero. The change is steep.
Accordingly, a signal having a high frequency component higher than the first frequency of the first waveform W1 is generated at the falling portion of the first waveform W1, as described above. When the movable panel unit 14 vibrates, there is a concern that acoustic noise having a frequency higher than the first frequency is generated from the movable panel unit 14.
However, the frequency of the signal generated at the rising and falling edges of the first waveform W1 is lower than the second frequency.
In the present embodiment, the movable panel unit 14 generates the second frequency sound that is higher than the frequency of the signal generated at the rise and fall of the first waveform W1 and that is easily felt by human hearing. Therefore, such acoustic noise is not audibly conspicuous, and is therefore more advantageous in enhancing the feeling of use without causing the user to feel uncomfortable or uncomfortable.

(Second Embodiment)
Next, a second embodiment will be described.
In the second embodiment, the touch panel display device 10 according to the present invention is applied to a gaming device as an electronic device.
9A and 9B are explanatory diagrams of the gaming machine 2 according to the second embodiment. In the following embodiments, the same or similar parts and members as those in the first embodiment will be described with the same reference numerals.
The gaming device 2 is called an arcade game machine installed in a store such as a game center, and the gaming device 2 shown in (A) plays a game in a state where the user stands, (B) The gaming device 2 shown in FIG. 1 is for playing a game while the user is sitting on the chair 206.
As shown in FIGS. 9A and 9B, the gaming device 2 has a device-side housing 202, and the housing 12 of the touch panel display device 10 is attached to the device-side housing 202. The surface 1402 of the movable panel unit 14 is disposed so as to be exposed to the outside through the opening 202A on the front side. An operation console 204 on which operation members such as operation buttons and operation levers are arranged is provided at a position of the device-side casing 202 below the opening 202A.
The user plays a game by pressing the touch panel 26 with a finger while visually recognizing the screen displayed on the display panel 24 of the touch panel display device 10.
It goes without saying that the same effects as those of the first embodiment are also achieved in such a gaming machine 2.
In particular, in such a gaming machine 2, since the area of the touch panel display device 10 is large and therefore the area of the movable panel unit 14 is large, when acoustic noise occurs, the volume of the acoustic noise becomes large. However, according to the present embodiment, such acoustic noise can be made inconspicuous by human hearing, and the usability can be improved without giving a sense of discomfort or discomfort to the user. Is advantageous.

(Third embodiment)
Next, a third embodiment will be described.
The third embodiment is different from the first embodiment in that the movable panel unit 14 is vibrated along a plane parallel to the panel surface, and the other points are the same as in the first embodiment. It is.
FIG. 10 is a perspective view illustrating a configuration of the touch panel display device 50 according to the third embodiment.
As in the first embodiment, the touch panel display device 50 according to the third embodiment includes a housing 12 (support structure), a movable panel unit 14, a movable support member 16, a first spacer block 18, a first spacer block 18, and a first spacer block 18. 2 spacer block 20, actuator 22, actuator drive control unit 36 (see FIG. 2), and the like.

  A fixed wall 12 </ b> B is provided on the bottom wall 12 </ b> A of the housing 12 so as to face one side of the flat panel-shaped movable panel unit 14 having a rectangular shape in plan view. The fixed wall 12B is defined by the casing or frame of the electronic device, and thus forms a part of the support structure 12.

  Similar to the first embodiment, the movable panel unit 14 includes a display panel 24 and a touch panel 26 that is provided integrally with the display surface 2402 of the display panel 24, and has a rectangular plate shape (flat plate shape). The surface 1402 of the movable panel unit 14 is configured by the surface of the touch panel 26, and the back surface 1404 of the movable panel unit 14 is configured by the back surface of the backlight 24B.

  The movable support member 16 makes the movable panel unit 14 parallel to the panel surface in a state where the movable panel unit 14 is parallel to the bottom surface 1202 of the bottom wall 12A and the surface 1402 is opposed to the bottom wall 12A. It is supported on the bottom wall 12A so that it can be displaced along, and is made of an elastic material similar to that of the first embodiment.

An actuator 22 is disposed between the side of the movable panel unit 14 facing each other and the fixed wall 12B.
Both ends of the actuator 22 in the longitudinal direction are connected to the fixed wall 12B via the spacer block 18, and between each spacer block 18 and each end of the actuator 22, as well as each spacer block 18 and the fixed wall 12B. Is bonded using a double-sided adhesive tape.
In addition, the actuator 22 has a longitudinal center portion connected to the side of the movable panel unit 14 via the spacer block 20 (side facing the fixed wall 12B). And between the spacer block 24 and the side of the movable panel unit 14 are bonded using a double-sided adhesive tape.
When a voltage is applied to the actuator 22 attached between the fixed wall 12B of the support structure 12 and the movable panel unit 14 in this way, the actuator 22 generates a bending displacement. The movable panel unit 14 is displaced in the direction indicated by the arrow B.
The direction and magnitude of this displacement correspond to the polarity and magnitude of the applied voltage. Further, the direction of the displacement of the movable panel unit 14 thus generated is a direction along a plane parallel to the panel surface of the movable panel unit 14. Therefore, the actuator 22 drives the movable panel unit 14 in a direction along a plane parallel to the panel surface.

  Even in such a configuration, similarly to the first embodiment, a drive signal supplied from the actuator drive control unit 36 to the actuator 22 is caused to generate a tactile sensation by vibration at the fingertip of the user in contact with the touch panel 26. Two waveforms, a first waveform W1 having a first frequency and a second waveform W2 having a second frequency higher than the first frequency for generating a predetermined sound from the movable panel unit 14. Since the user feels the sound of the second frequency higher than the first frequency as a loud sound, it becomes difficult for the user to feel the acoustic noise of the first frequency audibly. The acoustic noise is not audibly noticeable by the sound of the second frequency. Therefore, the feeling of use can be enhanced without causing the user to feel uncomfortable or uncomfortable.

In the touch panel display device 50 according to the third embodiment, the touch panel 26 and the display panel 24 are not integrated, and the display panel 24 is fixed on the housing 12 (support structure), and only the touch panel 26 is used. The movable panel unit 14 may be configured in the same manner as in the first embodiment.
Further, the touch panel display device 50 according to the third embodiment can be applied to the gaming machine 2 as an electronic device, as in the second embodiment, and in that case, the same as in the second embodiment. Of course, the effect of
In the above-described embodiment, a gaming device is described as an example of an electronic device to which the touch panel display device is applied. However, the touch panel display device of the present invention is a car navigation system, a portable information terminal device, a cellular phone, an ATM ( The present invention can be applied to various electronic devices such as an automatic teller machine (POS), a cash register in a point-of-sales information management system (POS), a home game device, a portable game device, and various other game devices.

It is sectional drawing which shows the structure of the touchscreen display apparatus 10 which concerns on embodiment of this invention. 2 is a block diagram illustrating a control unit and an electronic circuit that are components of the touch panel display device 10. FIG. (A)-(D) are figures which show the specific example of the waveform produced | generated by the waveform production | generation mechanism 42. FIG. It is explanatory drawing which shows the experimental result which evaluated the degree recognized as a tactile sense when changing the vibration frequency and amplitude of the movable panel 14 in multiple steps. It is the figure which showed the result of FIG. 4 as a three-dimensional graph. FIG. 4 is a waveform diagram of a drive signal S supplied to the actuator 22, (A) is a waveform diagram in the conventional device, and (B) to (D) are waveform diagrams in the device of the present embodiment. It is a detailed waveform diagram of the drive signal when the second waveform W2, the first waveform W1, and the second waveform W2 are supplied to the actuator 22 in this order. It is a figure which shows an equal loudness level curve. (A), (B) is explanatory drawing of the game device 2 of 2nd Embodiment. It is a perspective view which shows the structure of the touchscreen display apparatus 50 of 3rd Embodiment.

Explanation of symbols

  2 …… Game equipment 10, 50 …… Touch panel display device, 12 …… Case, 14 …… Moving panel unit, 16 …… Moving support member, 22 …… Actuator, 24 …… Display panel, 26 …… Touch panel , 36... Actuator drive control unit, S... Drive signal, W1... First waveform, W2.

Claims (20)

A display panel;
A plate-shaped movable panel unit with a touch panel;
A movable support unit that supports the movable panel unit on a support structure in a displaceable manner;
An actuator that drives and oscillates the movable panel unit by being supplied with a drive signal;
An actuator drive control unit that drives and controls the actuator by generating the drive signal and supplying the drive signal to the actuator;
A touch panel display device that generates a tactile sensation on a user's fingertip that is in contact with the touch panel that is a panel surface of the movable panel unit by causing the actuator to vibrate the movable panel unit,
The drive signal is configured to include two waveforms, a first waveform and a second waveform,
The first waveform has a first frequency for generating a tactile sensation due to vibration at a user's fingertip in contact with the touch panel;
The second waveform has a second frequency that is higher than the first frequency for generating a predetermined sound from the movable panel unit.
A touch panel display device characterized by that. The first frequency is 50 Hz or more and 400 Hz or less,
The touch panel display device according to claim 1. The first frequency is 100 Hz to 300 Hz.
The touch panel display device according to claim 1. The second frequency is 0.4 kHz or more and 6 kHz or less.
The touch panel display device according to claim 1. The second frequency is 0.8 kHz or more and 2 kHz or less.
The touch panel display device according to claim 1. The generation of the drive signal by the actuator drive control unit is performed such that the first waveform is generated following the second waveform.
The touch panel display device according to claim 1. The generation of the drive signal by the actuator drive control unit is performed such that the first waveform is generated following the second waveform, and the acoustic signal is generated following the first waveform.
The touch panel display device according to claim 1. The movable support unit supports the movable panel unit so as to be displaceable along the thickness direction of the movable panel unit,
The actuator vibrates the movable panel unit along the thickness direction;
The touch panel display device according to claim 1. The movable support unit supports the movable panel unit so as to be displaceable along a plane parallel to the panel surface of the movable panel unit,
The actuator vibrates the movable panel unit along a plane parallel to the panel surface;
The touch panel display device according to claim 1. The movable panel unit is configured by integrally combining the display panel and the touch panel.
The touch panel display device according to claim 1. The display panel is fixed on the support structure, and the movable panel unit is disposed so that the touch panel is positioned to overlap the display panel.
The touch panel display device according to claim 1. The actuator drive controller is
A memory storing waveform data corresponding to the waveform;
A waveform generating mechanism for generating a waveform according to the waveform data read from the memory;
Means for supplying a drive signal having a waveform generated by the waveform generation mechanism to the actuator;
The touch panel display device according to claim 1.   2. The touch panel display device according to claim 1, wherein the movable support portion includes an elastic body block provided at a plurality of locations between the movable panel unit and the support structure. 3.   The touch panel display device according to claim 13, wherein the elastic block is made of a polymer gel material. The actuator is an elongated plate-like bending displacement type piezoelectric actuator,
The piezoelectric actuator is disposed between a back surface located on the opposite side of the panel surface of the movable panel unit and a fixed portion that is a part of the support structure provided to face the back surface.
The piezoelectric actuator has both longitudinal ends connected to one of the back surface and the fixed portion of the movable panel unit, and a longitudinal center portion connected to the other of the back surface and the fixed portion of the movable panel unit. The touch panel display device according to claim 1, wherein the touch panel display device is connected.   The touch panel display device according to claim 15, wherein the piezoelectric actuator is a laminated bimorph piezoelectric actuator.   The actuator is an elongated plate-like bending displacement type piezoelectric actuator, and the piezoelectric actuator is one side of the movable panel unit and a part of the support structure provided facing the side. The piezoelectric actuator is disposed between the fixed portion, and both ends of the piezoelectric actuator in the longitudinal direction are connected to one of the side and the fixed portion of the movable panel unit, and the central portion in the longitudinal direction is the movable panel unit. The touch panel display device according to claim 1, wherein the touch panel display device is connected to the other of the side and the fixing portion.   The touch panel display device according to claim 17, wherein the piezoelectric actuator is a laminated bimorph piezoelectric actuator. A display panel;
A plate-shaped movable panel unit with a touch panel;
A movable support unit that supports the movable panel unit on a support structure in a displaceable manner;
A drive method of a touch panel display device comprising an actuator that drives and vibrates the movable panel unit by being supplied with a drive signal,
Generating a first waveform having a first frequency for generating a tactile sensation by vibration on a fingertip of a user who is in contact with the touch panel which is a panel surface of the movable panel unit;
Generating a second waveform having a second frequency higher than the first frequency for generating a predetermined sound from the movable panel unit;
The actuator is driven and controlled by supplying a drive signal including two waveforms of the first waveform and the second waveform to the actuator,
Generating a tactile sensation at the fingertip of the user in contact with the touch panel and generating sound,
A method for driving a touch panel display device. An electronic device having a device-side casing,
A touch panel display device is incorporated in the device-side casing,
The touch panel display device
A display panel;
A plate-shaped movable panel unit with a touch panel;
A movable support unit that supports the movable panel unit on a support structure in a displaceable manner;
An actuator that drives and oscillates the movable panel unit by being supplied with a drive signal;
An actuator drive control unit that drives and controls the actuator by generating the drive signal and supplying the drive signal to the actuator;
The actuator causes the movable panel unit to vibrate, thereby generating a tactile sensation on a user's fingertip that is in contact with the touch panel that is a panel surface of the movable panel unit.
The drive signal is configured to include two waveforms, a first waveform and a second waveform,
The first waveform has a first frequency for generating a tactile sensation due to vibration at a user's fingertip in contact with the touch panel;
The second waveform has a second frequency that is higher than the first frequency for generating a predetermined sound from the movable panel unit.
An electronic device characterized by that.

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