JP2019061373A - Tactile presentation device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a tactile presentation device which is hard to crack, has excellent wear resistance, and can suppress a decrease in vibration efficiency. SOLUTION: A tactile interface (IF) panel 3 is a vibrating panel 21 made of a highly elastic composite material in which a reinforcing fiber and a thermosetting resin are combined, and an actuator 6 fixed to the lower surface of the vibrating panel 21. And a coating film 31 that covers the upper surface of the vibration panel 21. Since the vibration panel 21 has a higher breaking strength than glass, it is hard to break, and since the vibration damping is small inside the vibration panel 21, it is possible to suppress a decrease in vibration efficiency as compared with plastic. Further, since the coating film 31 is formed on the upper surface of the vibration panel 21, wear resistance can be ensured. [Selection diagram] Fig. 3

Description

  The present invention relates to a tactile sense presentation device.

  Conventionally, an interface device that performs haptic feedback is known (see, for example, Patent Document 1). In addition, there is known a touch panel input device that vibrates a pressed movable plate or a supporting substrate supporting the movable plate when pressing the movable plate to generate an input operation feeling to the operator (for example, Patent Document) 2).

  In addition, a tactile sensation presentation device is known which vibrates an actuator attached to a thin glass plate in an ultrasonic band to generate a standing wave on the thin glass plate and provides various tactile sensations by a squeeze film effect (for example, a patent) Reference 3). The squeeze film effect is a phenomenon in which an air film is generated between the finger and the vibrating surface when the finger is brought close to the vibrating surface, whereby the frictional force is reduced.

JP 2011-519082 Gazette JP 2003-122507 A WO 2015/045059

  Since the thin glass plate used for the tactile sense presentation device has a thickness of several hundred microns, there is a problem that it is fragile and easily broken. In particular, since the thin glass sheet is subjected to the load of vibration of the ultrasonic wave band and the load of pressing by the finger, the thin glass sheet may be broken starting from the micro crack generated in the thin glass sheet. When plastic is used instead of thin glass, there is a problem that surface hardness is small and it is easy to wear. Furthermore, there is a problem that vibration efficiency is poor because vibration damping is large inside the plastic.

  An object of the present invention is to provide a tactile sense presentation device which is resistant to breakage, excellent in wear resistance, and capable of suppressing a decrease in vibration efficiency.

  In order to achieve the above object, the tactile sense presentation device disclosed in the specification includes a first substrate made of a highly elastic composite material in which a reinforcing fiber and a thermosetting resin are combined, and a lower surface of the first substrate. And a covering film for covering the upper surface of the first substrate.

  ADVANTAGE OF THE INVENTION According to the tactile sense presentation apparatus of this invention, it is hard to be cracked, it is excellent in abrasion resistance, and the fall of vibration efficiency can be suppressed.

(A) is a block diagram of an example of the tactile sense presentation apparatus based on this Embodiment. (B) is a block diagram of the drive circuit mounted in a tactile sense presentation apparatus. It is a block diagram of an example of a tactile sense IF panel. FIG. 2 is a cross-sectional view of a touch panel according to the first embodiment. FIG. 7A is a cross-sectional view of a touch panel according to a second embodiment. (B) is a perspective view of a touch IF panel according to a second embodiment. (A) is a cross-sectional view of a tactile sense IF panel according to a third embodiment. (B) is a perspective view of a touch IF panel according to a third embodiment. FIG. 10 is a cross-sectional view of a tactile sense IF panel according to a fourth embodiment. (A) is a cross-sectional view of a touch IF panel according to a fifth embodiment. (B) is sectional drawing of the modification of the tactile sense IF panel based on Example 5. FIG. FIG. 21 is a cross-sectional view of a tactile sense IF panel according to a sixth embodiment. FIG. 18 is a cross-sectional view of a tactile sense IF panel according to a seventh embodiment.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

  FIG. 1A is a block diagram of an example of the tactile sense presentation device according to the present embodiment. FIG. 1B is a configuration diagram of a drive circuit mounted on the tactile sense presentation device.

  The tactile sensation presentation device 1 of FIG. 1 includes an information processing device 2 such as a smartphone or a tablet terminal, a tactile sensation interface (IF) panel 3 disposed on the information processing device 2, an information processing device 2 and a tactile sensation IF panel 3 And a cover 5 for covering the outer peripheral portion of the upper surface of the tactile sensation IF panel 3. The tactile sensation IF panel 3 includes an actuator 6 as a vibration generating element that generates vibration in an ultrasonic band (about 30 kHz). The information processing device 2 includes a display 7 with a touch panel, a controller 8, and a drive circuit 9 that vibrates the actuator 6. The controller 8 is connected to the display 7 and the drive circuit 9. The tactile sensation IF panel 3 is transparent or has light transmittance of about 50% or more, and the user can view data displayed on the display 7. The display 7 includes a capacitive touch panel 7 a and a display 7 b as a display device.

  When the finger of the operator touches the tactile sensation IF panel 3, the controller 8 detects the touch position via the touch panel 7a. Further, the controller 8 detects that the finger is separated from the tactile sensation IF panel 3. Furthermore, when the finger of the operator slides, the controller 8 calculates the movement distance and movement direction of the finger.

  The drive circuit 9 includes a DA circuit 13 for generating a modulation waveform of several to dozens of Hz (that is, a frequency in line with human sense) directly linked to generation of a tactile sensation, and about 30 kHz around the resonance frequency of the tactile sensation IF panel 3 The oscillation circuit 14 that oscillates the excitation signal, and the amplification circuit 15 that amplifies the signal from the DA circuit 13 to a voltage of several volts to several tens of volts and that supplies sufficient power to the tactile sensation IF panel 3 And have. The amplitude of the excitation signal from the oscillator circuit 14 is controlled in accordance with the envelope of the modulation waveform. The drive circuit 9 supplies drive voltages of various waveforms to the actuator 6 in accordance with an instruction signal from the controller 8.

  When the controller 8 outputs a first instruction signal for sliding the finger smoothly to the drive circuit 9, a voltage having a waveform with a constant amplitude is continuously supplied from the drive circuit 9 to the actuator 6, and the actuator 6 is continuously operated. Generate vibrations in the ultrasonic band. Thereby, the operator can slide the finger smoothly on the surface of the tactile sensation IF panel 3.

  When the controller 8 outputs to the drive circuit 9 a second instruction signal for presenting a feeling of unevenness (roughness) to the finger, for example, a rectangular wave voltage is periodically supplied from the drive circuit 9 to the actuator 6, and the actuator 6 Vibrations in the ultrasonic band are generated periodically. As a result, the unevenness is presented to the finger on the surface of the tactile sensation IF panel 3.

  When the controller 8 outputs a third instruction signal to stop the vibration to the drive circuit 9, the voltage supply from the drive circuit 9 to the actuator 6 is stopped, and the actuator 6 stops the vibration in the ultrasonic band. As a result, a frictional feeling in which the finger does not slip on the surface of the tactile sensation IF panel 3 is presented to the finger.

  In addition, it replaces with the display 7 with a touch panel, and the touch panel 7a without a display may be used. In addition, the tactile sense presentation device 1 only needs to have the tactile sense IF panel 3 and the actuator 6 as the minimum configuration, and does not necessarily have to include the information processing device 2, the housing 4 and the cover 5.

  FIG. 2 is a block diagram of an example of the haptic IF panel 3. The tactile sensation IF panel 3 includes a vibrating panel 21 as a transparent or light-transmissive rectangular first substrate, actuators 6 provided at both ends of the vibrating panel 21 in the X direction, and both ends of each actuator 6 in the Y direction. A wiring pattern 22 formed on the vibration panel 21 so as to be sandwiched, an FPC (Flexible Printed Circuits) 23 connected to one end of the wiring pattern 22, and a base 24 for fixing the vibration panel 21 to the housing 4 Have. The FPC 23 is connected to the drive circuit 9 of FIG.

Example 1
FIG. 3 is a cross-sectional view of the tactile IF panel 3 according to the first embodiment. The tactile sensation IF panel 3 of FIG. 3 includes a vibration panel 21, an actuator 6, and a coating film 31 that covers the upper surface of the vibration panel 21.

  The vibrating panel 21 is made of a highly elastic composite material. As a highly elastic composite material, a material obtained by combining a reinforcing fiber with a thermosetting resin to enhance mechanical properties and thermal properties is preferable.

  The reinforcing fiber is preferably a highly elastic fiber having an elastic modulus of 50 GPa or more, and for example, glass fiber, aramid fiber, polyarylate fiber, polyparaphenylene benzobisoxazole (PBO) fiber, carbon fiber, ultrahigh molecular weight polyethylene fiber or It is boron fiber etc. The thermosetting resin is, for example, an epoxy resin, an unsaturated polyester resin, a diallyl phthalate resin, a urea resin, a melamine resin or a phenol resin.

  The actuator 6 has a thin plate shape, for example, a piezoelectric element. The coating film 31 is made of a hard coat material of wear resistance. As the hard coat material, silicone resin, acrylic resin, melamine resin or urethane resin can be used. As a film forming method of the hard coating material, a thermosetting method, a UV curing method, an electron beam curing method, or the like can be applied.

  For example, a coating film 31 of silicon resin is formed on the upper surface of a glass epoxy substrate formed by impregnating a glass fiber with an epoxy resin and pressure lamination is performed, and a film 31 of silicon resin is formed by thermosetting method. By fixing, the tactile IF panel 3 of FIG. 3 can be formed.

  The vibration panel 21 made of a highly elastic composite material has a higher breaking strength than glass and thus is less likely to be broken, and the vibration attenuation is less in the inside, so that the decrease in vibration efficiency can be suppressed more than plastic. In addition, since the coating film 31 is formed on the upper surface of the vibration panel 21 touched by a finger using a hard-wearing material, the wear resistance can be secured. Furthermore, since the vibration panel made of glass is easily broken, it is difficult to open or cut the hole, but since the vibration panel 21 of this embodiment is not easily broken, it is easy to open or cut the hole.

  In addition, when arrange | positioning the tactile sense IF panel 3 on a capacitive touch panel like FIG. 1, it is preferable to use the fiber for reinforcements other than a carbon fiber as a material of the vibration panel 21. As shown in FIG. Since carbon fibers have high conductivity, when disposed on a capacitive touch panel, the capacitive touch panel may not operate properly.

(Example 2)
FIG. 4A is a cross-sectional view of the tactile IF panel 3 according to the second embodiment. FIG. 4B is a perspective view of the tactile IF panel 3 according to the second embodiment. In the tactile sensation IF panel 3 of FIGS. 4A and 4B, the actuator 6 is formed on the lower surface of the vibration panel 21, and the wiring pattern 22 which is a signal supply line for driving the actuator 6 is silver paste. Are formed on the lower surface of the vibration panel 21 by printing and firing. Here, the end portion on the center side of the vibration panel 21 of the wiring pattern 22 and the external drive circuit 9 are connected by the FPC 23 (see FIG. 2). Similar to the first embodiment, the covering film 31 is formed on the upper surface of the vibrating panel 21.

  Since a special method is used for printing and firing of silver paste on glass, it is difficult to form the wiring patterns 22 of silver paste on the upper and lower surfaces of the vibrating panel 21 when the vibrating panel 21 is glass. However, in the case of using the vibration panel 21 made of the high elastic composite material as in the first embodiment, the manufacturing technology of the wiring pattern already used in the manufacture of the touch panel can be diverted. The wiring patterns 22 can be easily formed on the upper and lower surfaces.

  As described above, the vibration panel 21 made of a highly elastic composite material has an advantage that it is easier to form a wiring pattern than a glass vibration panel. Through holes may be formed in the vibration panel 21, and the wiring patterns 22 formed on the upper and lower surfaces of the vibration panel 21 may be conducted in the vibration panel 21.

(Example 3)
FIG. 5A is a cross-sectional view of the tactile IF panel 3 according to the third embodiment. FIG. 5B is a perspective view of the tactile IF panel 3 according to the third embodiment. In the third embodiment, the covering film 31 is formed on the upper surface of the vibration panel 21, the actuator 6 and the wiring pattern 22 are formed on the lower surface of the vibration panel 21, and the drive circuit 9 is mounted on the lower surface of the vibration panel 21. . The drive circuit 9 is connected to an end of the wiring pattern 22 on the center side of the vibration panel 21.

  As described above, since the drive circuit 9 is mounted on the vibration panel 21, the thickness of the entire touch sensation IF panel 3 can be reduced. The configuration in which the wiring pattern 22 and / or the drive circuit 9 is mounted on the vibration panel 21 can be applied to other embodiments described later.

(Example 4)
FIG. 6 is a cross-sectional view of the tactile IF panel 3 according to the fourth embodiment. In the fourth embodiment, the tactile sensation IF panel 3 includes a capacitive touch panel, and the vibration panel 21 corresponds to the upper substrate of the capacitive touch panel. Therefore, the vibration panel 21 constitutes a part of the capacitive touch panel.

  The vibrating panel 21 is made of a highly elastic composite material, and the covering film 31 is formed on the upper surface of the vibrating panel 21, and the actuator 6 and the wiring pattern 22 are formed on the lower surface of the vibrating panel 21. Furthermore, an upper conductive film 32 is formed on the lower surface of the vibration panel 21. The lower substrate 35 as the second substrate is, for example, a glass plate, and the lower conductive film 34 is formed on the upper surface of the lower substrate 35, for example. The upper conductive film 32 and the lower conductive film 34 are disposed to face each other, and the upper conductive film 32 and the lower conductive film 34 are fixed by an adhesive 33. The vibration panel 21, the upper conductive film 32, the adhesive 33, the lower conductive film 34, and the lower substrate 35 constitute a capacitive touch panel. The upper conductive film 32 and the lower conductive film 34 function as a first conductive film and a second conductive film, respectively.

  As described above, according to the present embodiment, since the vibration panel 21 can be used not only as a diaphragm but also as an upper substrate of a capacitive touch panel, the touch IF panel 3 with the capacitive touch panel can be thinned. Can.

(Example 5)
FIG. 7A is a cross-sectional view of the tactile IF panel 3 according to the fifth embodiment. FIG. 7B is a cross-sectional view of a modification of the tactile sense IF panel 3 according to the fifth embodiment. In FIG. 7A, the vibration panel 21 is made of a highly elastic composite material, the covering film 31 is formed on the upper surface of the vibration panel 21, and the actuator 6 is formed on the lower surface of the vibration panel 21. Furthermore, a mask 37 is formed on the lower surface of the vibration panel 21 by painting, printing or the like, and a backlight 38 is disposed below the mask 37 and the actuator 6 as a light source. The backlight 38 may be a light guide plate. In a part of the mask 37, an air gap 39 in the shape of a letter, a numeral, a symbol or the like is formed. Light directed upward from the backlight 38 is blocked by the mask 37 but passes through the air gap 39.

  In FIG. 7B, the mask 37 is formed on the upper surface of the vibrating panel 21, and the covering film 31 is formed on the upper surface of the mask 37. As in FIG. 7A, an air gap 39 in the shape of characters, numerals, symbols, etc. is formed in part of the mask 37. Light directed upward from the backlight 38 is blocked by the mask 37 but passes through the air gap 39.

  As described above, the mask 37 for blocking light and the air gap 39 for transmitting light are formed on the lower surface or the upper surface of the vibration panel 21 and illuminated by the backlight 38 from the lower side of the vibration panel 21. It can be illuminated in the form of letters, numbers or symbols formed on.

(Example 6)
FIG. 8 is a cross-sectional view of the tactile IF panel 3 according to the sixth embodiment. In FIG. 8, the vibrating panel 21 is made of a highly elastic composite material, the covering film 31 is formed on the upper surface of the vibrating panel 21, and the actuator 6 is formed on the lower surface of the vibrating panel 21. Further, a member (hereinafter, referred to as a magnetic fluid containing member) 41 including a magnetic fluid is attached to the lower surface of the vibration panel 21. A backlight 38 is disposed below the magnetic fluid containing member 41 and the actuator 6, and an electromagnetic coil array 42 is disposed below the backlight 38 as a magnetic field generating member. The controller 8 (see FIG. 1A) controls the magnetic field generated from the electromagnetic coil array 42 to control the movement of the magnetic fluid contained in the magnetic fluid-containing member 41. In this case, the light illuminated from the backlight 38 can be shaded by the movement of the magnetic fluid, and characters, numbers, symbols or patterns can be created.

  The backlight 38 may be a light guide plate. The magnetic fluid containing member 41 may be disposed between the backlight 38 and the vibrating panel 21, and may be attached to the top surface of the backlight 38, for example.

  As described above, the magnetic fluid containing member 41 is disposed between the backlight 38 and the vibrating panel 21, and the electromagnetic coil array 42 is disposed below the backlight 38, and the magnetism contained in the magnetic fluid containing member 41 by the magnetic field. By controlling the movement of the fluid, letters, numerals, symbols or patterns can be illuminated.

(Example 7)
FIG. 9 is a cross-sectional view of the tactile IF panel 3 according to the seventh embodiment. In FIG. 9, the vibration panel 21 is made of a highly elastic composite material, the film-like organic EL display 43 is disposed on the upper surface of the vibration panel 21, and the covering film 31 is formed on the upper surface of the organic EL display 43. The actuator 6 is formed on the lower surface of the vibration panel 21. The structure shown in FIG. 9 can reduce the thickness of the tactile IF panel 3 with the display function.

  As described above, according to the present embodiment, the tactile interface (IF) panel 3 includes the vibration panel 21 made of the high-elasticity composite material in which the reinforcing fiber and the thermosetting resin are combined, and the vibration. An actuator 6 fixed to the lower surface of the panel 21 and a covering film 31 covering the upper surface of the vibrating panel 21 are provided. The vibration panel 21 has a higher breaking strength than glass and therefore is less likely to be broken, and since vibration damping is less in the inside, the decrease in vibration efficiency can be suppressed more than plastic. In addition, since the coating film 31 is formed on the upper surface of the vibration panel 21, the wear resistance can be secured.

  The present invention is not limited to the above-described embodiment, and various modifications can be made without departing from the scope of the invention.

Reference Signs List 1 tactile sense presentation device 3 tactile sense interface (IF) panel 6 actuator 9 drive circuit 21 vibration panel 22 wiring pattern 37 mask 38 back light 41 magnetic fluid containing member 42 electromagnetic coil array

Claims (7)

A first substrate composed of a highly elastic composite material combining a reinforcing fiber and a thermosetting resin,
A vibration generating element fixed to the lower surface of the first substrate;
And a coating film that covers the upper surface of the first substrate.   The tactile sense presentation device according to claim 1, wherein the first substrate includes a wire that supplies a signal for driving the vibration generating element.   The tactile sense presentation device according to claim 1, wherein the first substrate includes a drive circuit that drives the vibration generating element. A second substrate,
A first conductive film formed on the lower surface of the first substrate;
A second conductive film formed on the upper surface of the second substrate and facing the first conductive film;
An adhesive disposed between the first conductive film and the second conductive film for fixing the first conductive film and the second conductive film;
The tactile sense presentation device according to any one of claims 1 to 3, further comprising: A light source disposed below the first substrate;
A blocking layer is formed on the lower surface or the upper surface of the first substrate to block light from the light source, and a gap is formed on part of the blocking layer to pass light from the light source. The tactile sense presentation device according to any one of claims 1 to 3. A light source disposed below the first substrate;
A member including a magnetic fluid disposed between the first substrate and the light source;
The tactile sense presentation device according to any one of claims 1 to 3, further comprising: a magnetic field generation member installed below the light source and driving the magnetic fluid.   The tactile sense presentation device according to any one of claims 1 to 3, further comprising a display device between the first substrate and the covering film.

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