WO2017014452A1 - Dispositif de bouton utilisant un élément piézoélectrique - Google Patents

Dispositif de bouton utilisant un élément piézoélectrique Download PDF

Info

Publication number
WO2017014452A1
WO2017014452A1 PCT/KR2016/007287 KR2016007287W WO2017014452A1 WO 2017014452 A1 WO2017014452 A1 WO 2017014452A1 KR 2016007287 W KR2016007287 W KR 2016007287W WO 2017014452 A1 WO2017014452 A1 WO 2017014452A1
Authority
WO
WIPO (PCT)
Prior art keywords
piezoelectric element
piezoelectric
cover
piezoelectric body
button device
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/KR2016/007287
Other languages
English (en)
Korean (ko)
Inventor
최요셉
최재형
노로유키히로
김봉수
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Wisol Co Ltd
Original Assignee
Wisol Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from KR1020150102293A external-priority patent/KR102193906B1/ko
Priority claimed from KR1020150110930A external-priority patent/KR102193908B1/ko
Application filed by Wisol Co Ltd filed Critical Wisol Co Ltd
Publication of WO2017014452A1 publication Critical patent/WO2017014452A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Images

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H13/00—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch
    • H01H13/70—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch having a plurality of operating members associated with different sets of contacts, e.g. keyboard
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H13/00—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch
    • H01H13/70—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch having a plurality of operating members associated with different sets of contacts, e.g. keyboard
    • H01H13/702—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch having a plurality of operating members associated with different sets of contacts, e.g. keyboard with contacts carried by or formed from layers in a multilayer structure, e.g. membrane switches
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H13/00—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch
    • H01H13/70—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch having a plurality of operating members associated with different sets of contacts, e.g. keyboard
    • H01H13/702—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch having a plurality of operating members associated with different sets of contacts, e.g. keyboard with contacts carried by or formed from layers in a multilayer structure, e.g. membrane switches
    • H01H13/703—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch having a plurality of operating members associated with different sets of contacts, e.g. keyboard with contacts carried by or formed from layers in a multilayer structure, e.g. membrane switches characterised by spacers between contact carrying layers
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H13/00—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch
    • H01H13/70—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch having a plurality of operating members associated with different sets of contacts, e.g. keyboard
    • H01H13/702—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch having a plurality of operating members associated with different sets of contacts, e.g. keyboard with contacts carried by or formed from layers in a multilayer structure, e.g. membrane switches
    • H01H13/704—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch having a plurality of operating members associated with different sets of contacts, e.g. keyboard with contacts carried by or formed from layers in a multilayer structure, e.g. membrane switches characterised by the layers, e.g. by their material or structure

Definitions

  • the present invention relates to a button device, and more particularly to a button device using a piezoelectric element.
  • a button using a piezoelectric element has been in the spotlight as a user interface of a mobile phone, a game machine, a home appliance, or an elevator button or a switch in a building.
  • a piezoelectric element is a device that utilizes a piezoelectric effect, and refers to an element having a property of causing electric polarization when an external force (or contact) is applied to cause a potential difference, and conversely, deformation or deformation force when a voltage is applied.
  • a button using a piezoelectric element may not only function as an input means by sensing an external force and generating an electrical signal, but also may provide feedback to a user by generating an vibration by applying an electrical signal to the piezoelectric element.
  • buttons using piezoelectric elements are not easy to manufacture in a thin form, and thus are not widely used.
  • the piezoelectric element is physically stressed due to external force or vibration, and durability is required to withstand such stress.
  • the present invention has been made in an effort to provide a button device using a piezoelectric element, which is easy to manufacture in a thin form and is more suitable for use in portable products such as mobile phones.
  • Another object of the present invention is to provide a button device using a piezoelectric element, which is easy to manufacture in a thin shape, more suitable for use in a portable product such as a mobile phone, and improved durability against physical stress.
  • a piezoelectric body comprising a piezoelectric body having a first external electrode and a second external electrode formed on one surface and a plate on which one surface is attached to the other surface of the piezoelectric body.
  • a support plate disposed on one side of the piezoelectric body; A cover attached to the other surface of the plate; And a spacer provided between the support plate and the plate to provide a space in which the piezoelectric element may be deformed by an external force applied to the cover.
  • the button device may further include an adhesive layer between the plate and the cover.
  • the button device may further include a dot provided in the adhesive layer to transfer the external force to the piezoelectric element.
  • the dot may be harder than the adhesive layer.
  • the button device may further include a flexible printed circuit board having conductive patterns connected to the first external electrode and the second external electrode, respectively.
  • the piezoelectric body may be a laminated piezoelectric body.
  • a dummy electrode may be further formed on one surface of the piezoelectric body, and electrodes including the first and second external electrodes and the dummy electrode may be symmetrical with each other.
  • the second external electrode may be formed in an annular shape, and the first external electrode may be formed inside the annular shape.
  • a button device using a piezoelectric element wherein a piezoelectric body having first and second external electrodes formed on one surface thereof is attached to one surface of the piezoelectric body, and the first and second external portions of the button device are used.
  • a piezoelectric element comprising a plate in which holes for receiving the first and second external electrodes are formed at positions corresponding to the electrodes, respectively; A cover disposed on the other surface side of the piezoelectric body; And a spacer supporting an edge of one surface of the plate and providing a space in which the piezoelectric element may be deformed by an external force applied to the cover.
  • the piezoelectric body may be a laminated piezoelectric body.
  • the button device may further include a pillar member surrounding the piezoelectric element and provided between the spacer and the cover to support the cover.
  • the spacer and the pillar member may be integrally formed.
  • the plate may have an insulated surface.
  • the button device may further include a damper layer between the other surface of the piezoelectric body and the cover.
  • the button device may further include a dot provided in the damper layer to transmit the external force to the piezoelectric element.
  • the dot may be harder than the damper layer.
  • the button device may include: a pillar member surrounding the piezoelectric element and provided on the spacer; A damper layer provided between the pillar member and the cover to support the cover together with the pillar member and to provide a space between the piezoelectric member and the cover; And a dot provided in the separation space to transfer the external force to the piezoelectric element or to transmit the vibration of the piezoelectric element to the cover.
  • Insulating molding may be filled in the holes accommodating the first and second external electrodes.
  • the first and second external electrodes are respectively centered on the first and second external electrodes within 30% of the distance from the center to the edge end with respect to an intermediate point between the center of the piezoelectric body and the edge end of the piezoelectric body. It may be arranged to be located.
  • the button device using the piezoelectric element according to the present invention there is an advantage that it is easy to manufacture a thin, more suitable for use in portable products such as mobile phones.
  • the button device using the piezoelectric element according to the present invention it is easy to manufacture a thin, more suitable for use in portable products such as mobile phones, and has the effect of improving durability against physical stress.
  • FIG. 1A is a side view of a button device using a piezoelectric element according to a first embodiment of the present invention.
  • FIG. 1B illustrates an example in which the piezoelectric element is deformed when an external force is applied to the button device of FIG. 1A.
  • FIG. 2 is a side view and a plan view of a piezoelectric body 12 according to an embodiment of the present invention.
  • FIG 3 is a side view and a plan view of a piezoelectric body 12 according to another embodiment of the present invention.
  • FIG. 4 is a side view and a plan view of a piezoelectric body 12 according to another exemplary embodiment of the present invention.
  • 5A is a side view of a button device using a piezoelectric element according to a second embodiment of the present invention.
  • FIG. 5B illustrates an example in which the piezoelectric element is deformed when an external force is applied to the button device of FIG. 5A.
  • FIG. 6A is a side view of a button device using a piezoelectric element according to a third embodiment of the present invention.
  • FIG. 6B illustrates an example in which the piezoelectric element is deformed when an external force is applied to the button device of FIG. 6A.
  • FIG. 7 is a side view and a plan view of a piezoelectric element 210 according to an embodiment of the present invention.
  • FIG 8 is a view for explaining the stress that the piezoelectric element 210 receives.
  • FIG 9 shows preferred positions of the first and second external electrodes 211a and 211b in the piezoelectric body 212 as proposed in the embodiment of the present invention.
  • FIG. 10A is a side view of a button device using a piezoelectric element according to a fourth embodiment of the present invention.
  • FIG. 10B illustrates an example in which the piezoelectric element is deformed when an external force is applied to the button device of FIG. 10A.
  • FIG. 1A is a side view of a button device using a piezoelectric element according to a first embodiment of the present invention
  • FIG. 1B is a state in which the piezoelectric element is deformed when an external force (or contact) F is applied to the button device of FIG. 1A. Shows an example.
  • the button device includes a piezoelectric element 10, a support plate 20, a cover 30, and a spacer 40.
  • the support plate 20 serves to support the spacer 40, the piezoelectric element 10, the cover 30, and the like placed thereon.
  • the support plate 20 may be made of, for example, tempered glass, epoxy, or the like.
  • the piezoelectric element 10 includes a piezoelectric body 12 and a plate 13.
  • a first external electrode 11a and a second external electrode 11b are formed on one surface (lower surface in FIG. 1).
  • the piezoelectric body 12 is attached to one surface of the plate 13.
  • the piezoelectric body 12 and the plate 13 may be attached by the adhesive 14.
  • the piezoelectric body 12 is made of a material having excellent piezoelectric properties such as quartz, tourmaline, Rochelle salt, barium titanate, monoammonium phosphate, and ethylenediamine tartarate. Can be made.
  • the piezoelectric body 12 is preferably a laminated piezoelectric body having a first external electrode 11a and a second external electrode 11b formed on one surface thereof, and specific examples of the piezoelectric body 12 will be described later with reference to FIGS. 2 to 4. do.
  • the plate 13 is typically metallic, for example stainless steel, and has a larger area than the piezoelectric body 12.
  • the support plate 20 is disposed on one side of the piezoelectric body 12 (lower surface in FIG. 1), and the spacer 40 is disposed between the edge outside the region where the piezoelectric body 12 is attached to one side of the plate 13 and the support plate 20.
  • the spacer 40 is thicker than the piezoelectric body 12 to provide a space S in which the piezoelectric element 10 can be deformed (preferably overlapping the piezoelectric body 12 and the flexible circuit board 70 to be described later). Thick thickness).
  • the plate 13 and the spacer 40 may be attached by an adhesive, and the spacer 40 and the supporting plate 20 may also be attached by an adhesive.
  • the support plate 20 and the spacer 40 may be integrally implemented.
  • the spacer 40 may be implemented so that the space S is also circular.
  • the piezoelectric body 12 and the plate 13 may have shapes other than circular (eg, triangular or square).
  • the spacer 40 may be implemented such that the space S is also triangular or square.
  • the cover 30 is attached to the other surface of the plate 13 (upper surface in FIG. 1) by the adhesive layer 50.
  • a dot 60 may be provided at a portion corresponding to a predetermined region with respect to the center of the piezoelectric element 10.
  • Dot 60 is a harder material than the adhesive layer 50 may serve to more reliably transmit the external force applied to the cover 30 to the piezoelectric element 10.
  • the dot 60 may be omitted. However, the sensitivity may be further improved due to the dot 60.
  • the piezoelectric element 10 deforms in the space S as shown in FIG. 1B, and thus the first and second external electrodes 11a, External force or contact can be detected by measuring the voltage detected in 11b).
  • the button device may include a conductive pattern (not shown) connected to the first and second external electrodes 11a and 11b, respectively.
  • the formed flexible circuit board 70 may be provided.
  • the flexible circuit board 70 may be connected to a circuit device (not shown) that measures a voltage detected by the first and second external electrodes 11a and 11b. Depending on the application, the circuit device may cause vibration in the piezoelectric element 10 by applying an electrical signal to the first and second external electrodes 11a and 11b through the flexible circuit board 70.
  • a wire may be connected to the first and second external electrodes 11a and 11b to measure the voltage detected by the first and second external electrodes 11a and 11b. have.
  • FIG. 2 is a side view and a plan view of a piezoelectric body 12 according to an embodiment of the present invention.
  • first and second external electrodes 11a and 11b are formed on one surface thereof, and a plurality of piezoelectric layers 15 are stacked therein, and between the piezoelectric layers 15.
  • the first and second internal electrodes 16a and 16b are alternately interposed to have different polarities in the directions.
  • the first and second external electrodes 11a and 11b and the first and second internal electrodes 16a and 16b are electrically connected to each other using the first and second conductive vias 17a and 17b, respectively.
  • FIG 3 is a side view and a plan view of a piezoelectric body 12 according to another embodiment of the present invention.
  • the piezoelectric body 12 is further formed on one surface of the piezoelectric body 12 illustrated in FIG. 2.
  • the dummy electrode 11c is an electrode which is not electrically connected to the first and second external electrodes 11a and 11b.
  • the dummy electrode 11c is formed of four first and second external electrodes 11a and 11b and a dummy electrode 11c.
  • the electrodes are arranged to be symmetrical to each other. For example, when the first and second external electrodes 11a and 11b are horizontally disposed (as shown in FIG. 3) as shown, the dummy electrode 11c is disposed between the first and second external electrodes 11a and 11b. Are placed vertically. Since the piezoelectric body 12 is symmetrical due to the dummy electrode 11c, the piezoelectric element 10 may cause stable deformation.
  • FIG. 4 is a side view and a plan view of a piezoelectric body 12 according to another exemplary embodiment of the present invention.
  • the second external electrode 18b is formed in an annular shape, and the first external electrode 18a is disposed inside the annular shape. Therefore, since the shape of the entire first and second external electrodes 18a and 18b is symmetrical, the piezoelectric element 10 may cause stable deformation.
  • FIG. 5A is a side view of a button device using a piezoelectric element according to a second embodiment of the present invention
  • FIG. 5B is a state in which the piezoelectric element is deformed when an external force (or contact) F is applied to the button device of FIG. 5A. Shows an example.
  • the button device includes a piezoelectric element 110, a support plate 120, a cover 130, and a spacer 140.
  • the support plate 120 supports the spacer 140, the piezoelectric element 110, the cover 130, and the like placed thereon.
  • the piezoelectric element 110 includes a piezoelectric body 112 and a plate 113.
  • the piezoelectric body 112 has a first external electrode 111a and a second external electrode 111b formed on one surface thereof (upper surface in FIG. 1).
  • the piezoelectric body 112 is attached to one surface of the plate 113.
  • the piezoelectric body 112 and the plate 113 may be attached by the adhesive 114.
  • the piezoelectric body 112 is preferably a stacked piezoelectric material having a first external electrode 111a and a second external electrode 111b formed on one surface thereof, and the piezoelectric body described above with reference to FIGS. 2 to 4 may be used as the piezoelectric body 112. Can be.
  • the plate 113 is typically made of metal, for example stainless steel, and has a larger area than the piezoelectric body 112.
  • the support plate 120 is disposed on the other surface (lower surface in FIG. 5) of the plate 113, and a spacer 140 is provided between the edge of the other surface of the plate 113 and the support plate 20.
  • the spacer 40 has a predetermined thickness to provide a space S in which the piezoelectric element 10 may be deformed.
  • the plate 113 and the spacer 140 may be attached by an adhesive, and the spacer 140 and the supporting plate 120 may also be attached by an adhesive. According to the embodiment, the support plate 120 and the spacer 140 may be integrally implemented.
  • the spacer 140 may be implemented so that the space S is also circular.
  • the piezoelectric body 112 and the plate 113 may have shapes other than circular (eg, triangular or square), and in this case, the spacer 140 may be implemented such that the space S is also triangular or square.
  • the button device may include a conductive pattern (not shown) connected to the first and second external electrodes 111a and 111b, respectively.
  • the formed flexible circuit board 170 may be provided.
  • the flexible circuit board 170 may be connected to a circuit device (not shown) that measures a voltage detected by the first and second external electrodes 11a and 11b. Depending on the application, the circuit device may cause vibration to the piezoelectric element 110 by applying an electrical signal to the first and second external electrodes 111a and 111b through the flexible circuit board 170.
  • a wire may be connected to the first and second external electrodes 111a and 111b to measure a voltage detected by the first and second external electrodes 111a and 111b. have.
  • the flexible printed circuit board 170 may have a layer shape covering substantially the entirety of the piezoelectric body 112 or may have a wiring shape sufficient to guide the conductive pattern connected to the first and second external electrodes 111a and 111b. .
  • the cover 130 may be attached to the flexible circuit board 170 by the adhesive layer 150.
  • the cover 130 may be attached to one surface (the upper surface in FIG. 5) of the piezoelectric body 112 including the flexible circuit board 170 by the adhesive layer 150. .
  • a dot 160 may be provided at a portion corresponding to the center of the piezoelectric element 110.
  • the dot 160 is harder than the adhesive layer 150, and may serve to more reliably transmit the external force applied to the cover 130 to the piezoelectric element 110.
  • the dot 160 may be omitted. However, the sensitivity may be further improved due to the dot 160.
  • the piezoelectric element 110 deforms in the space S as shown in FIG. 5B, and thus the first and second external electrodes 111a, External force or contact can be detected by measuring the voltage detected in 111b).
  • FIG. 6A is a side view of a button device using a piezoelectric element according to a third embodiment of the present invention
  • FIG. 6B is a state in which the piezoelectric element is deformed when an external force (or contact) F is applied to the button device of FIG. 6A. Shows an example.
  • the button device includes a piezoelectric element 210, a support plate 220, a cover 230, a spacer 240, a pillar member 245, and a damper layer 250.
  • the support plate 220 supports the spacer 240, the piezoelectric element 210, the pillar member 245, the cover 230, and the like placed thereon.
  • the support plate 220 may be made of, for example, tempered glass, epoxy, or the like.
  • the piezoelectric element 210 includes a piezoelectric element 212 and a plate 213.
  • the piezoelectric material 212 is provided with a first external electrode 211a and a second external electrode 211b on one surface (lower surface in FIG. 6).
  • the piezoelectric material 212 is made of quartz, tourmaline, lead zirconate titanate (PZT), Rochelle salt, barium titanate, monoammonium phosphate, ethylene tartarate, etc. It can be produced using a material having excellent piezoelectricity.
  • the piezoelectric material 212 is preferably a laminated piezoelectric material having a first external electrode 211a and a second external electrode 211b formed on one surface thereof, and a specific example of the piezoelectric material 212 will be described later with reference to FIG. 7.
  • Plate 213 is typically metallic, for example stainless steel, and has a larger area than piezoelectric material 212.
  • the plate 213 is attached to one surface of the piezoelectric body 213, that is, the surface on which the first and second external electrodes 211a and 211b are formed.
  • the piezoelectric body 212 and the plate 213 may be attached by the adhesive 214.
  • holes C a and C b are formed to receive the first and second external electrodes 211 a and 211 b at positions corresponding to the first and second external electrodes 211 a and 211 b , respectively.
  • the sizes of the holes C a and C b are slightly larger than those of the first and second external electrodes 211a and 211b.
  • the plate 213 is preferably the surface is insulated, including an inner peripheral surface of a hole (C a, C b) .
  • the plate 213 may be insulated or coated with an insulating spray.
  • the support plate 220 is disposed on one surface (lower surface in FIG. 6) of the plate 213, and a spacer 240 is provided between the edge of one surface of the plate 213 and the support plate 220.
  • the space 240 supports the edge of one surface of the plate 213 and provides a space S in which the piezoelectric element 210 may be deformed by an external force applied to the cover 230.
  • the plate 213 and the spacer 240 may be attached by an adhesive, and the spacer 240 and the supporting plate 220 may also be attached by an adhesive.
  • the spacer 240 may be implemented so that the space S is also circular.
  • the piezoelectric body 212 and the plate 213 may have shapes other than circular (eg, triangular or square), and in this case, the spacer 240 may be implemented such that the space S is also triangular or square.
  • the cover 230 is disposed on the other surface (upper surface in FIG. 6) of the piezoelectric body 212.
  • a damper layer 250 may be provided between the other surface of the piezoelectric body 212 and the cover 230.
  • the damper layer 250 may be, for example, a material such as urethane, and may serve to improve the assemblability of the button device.
  • the damper layer 250 may serve to match the shape of the cover 230 and the shape of the elements below the cover 230 when the cover 230 is not flat.
  • the damper layer 250 may be omitted.
  • the piezoelectric material 212 and the damper layer 250 may be attached by the first adhesive layer 251, and the damper layer 250 and the cover 230 may be attached by the second adhesive layer 252.
  • an adhesive layer may be provided between the piezoelectric body 212 and the cover 230.
  • a dot 260 may be provided at a portion corresponding to a predetermined region with respect to the center of the piezoelectric element 210. Can be.
  • the dot 260 is a harder material than the first adhesive layer 251, the damper layer 250, and the second adhesive layer 252, and the piezoelectric element 210 more reliably applies the external force applied to the cover 230. Or may transmit a vibration of the piezoelectric element 210 to the cover 230 more reliably.
  • the dot 260 may be provided only in the damper layer 250. In the absence of the damper layer 250, the dot 260 may be provided in the adhesive layer. In some embodiments, the dot 260 may be omitted. However, the sensitivity of the button device may be further improved due to the dot 260.
  • a pillar member surrounding the piezoelectric element 210 and supporting the damper layer 250 and the cover 230. 245 may be provided.
  • the pillar member 245 and the damper layer 250 may be attached by the first adhesive layer 251.
  • an adhesive layer may be provided between the pillar member 245 and the cover 230.
  • the pillar member 245 and the spacer 240 may also be attached by an adhesive. According to the exemplary embodiment, the pillar member 245 and the spacer 240 may be integrally implemented.
  • the piezoelectric element 210 deforms in the space S as shown in FIG. 6B, and thus the first and second external electrodes 211a, External force or contact can be detected by measuring the voltage detected in 211b).
  • vibration of the piezoelectric element 210 occurs by applying electrical signals to the first and second external electrodes 211a and 211b of the piezoelectric element 210, for example, a user who touches the finger on the cover 230 feels vibration. You can get feedback as
  • the first and second external electrodes 211a are used to measure the voltage detected by the first and second external electrodes 211a and 211b or to apply an electrical signal to the first and second external electrodes 211a and 211b.
  • 211b) may be provided with a flexible printed circuit board having conductive patterns respectively connected thereto.
  • a wire may be connected to the first and second external electrodes 211a and 211b instead of the flexible circuit board.
  • the flexible circuit board or wire may be connected to a circuit device (not shown) that measures a voltage detected by the first and second external electrodes 211a and 211b or applies an electrical signal to the first and second external electrodes 211a and 211b. Can be.
  • an insulation molding eg, epoxy molding
  • an insulation molding is formed in the holes C a and C b that accommodate the first and second external electrodes 211a and 211b. Can be filled.
  • FIG. 7 is a side view and a plan view of a piezoelectric element 210 according to an embodiment of the present invention.
  • the piezoelectric material 212 has first and second external electrodes 211a and 211b formed on one surface thereof, and a plurality of piezoelectric layers 215 are stacked therein, and the piezoelectric layers 215 have different polarities in the stacking direction.
  • the first and second internal electrodes 216a and 216b alternately intersect with each other.
  • the first and second external electrodes 211a and 211b and the first and second internal electrodes 216a and 216b are electrically connected to each other using the first and second conductive vias 217a and 217b, respectively.
  • Wires 219a and 219b are connected to the first and second external electrodes 211a and 211b, respectively. As described above, instead of the wires 219a and 219b, a flexible circuit board having conductive patterns connected to the first and second external electrodes 211a and 211b may be used.
  • the plate 213 is attached to one surface of the piezoelectric body 212 by an adhesive 214.
  • a first and a second is filled with the insulating molding each (218a, 218b), the external electrodes (211a, 211b) holes (C a, C b) for receiving.
  • FIG 8 is a view for explaining the stress that the piezoelectric element 210 receives.
  • the displacement is the largest in the center portion A, and the stress is the largest in the edge portion B fixed to the spacer 240.
  • the conductive vias 217a and 217b may be formed inside the piezoelectric body 212 corresponding to the external electrodes 211a and 211b. 217b), external electrodes, conductive vias, internal electrodes, wires (or flexible printed circuit boards), etc. may be damaged or the connections therebetween may be damaged.
  • the inventor of the present invention studied the position and range of the external electrode that can minimize the effects of the displacement and stress of the piezoelectric element 210 through experiments and simulations. As a result, the influence of displacement and stress is substantially between the points within 30% of the distance from the center of the piezoelectric element 212 to the edge end with respect to the intermediate point between the center of the piezoelectric element 212 and the edge end of the piezoelectric element 212. It was confirmed that none.
  • FIG 9 shows preferred positions of the first and second external electrodes 211a and 211b in the piezoelectric body 212 as proposed in the embodiment of the present invention.
  • the intermediate point is R / 2
  • the first and second external electrodes 211a are , 211b) is preferably disposed within 0.3 R from the R / 2 point to within 30% of R, ie from the R / 2 point.
  • the external electrode may be positioned within 1.5 mm on both sides of the 2.5 mm (2 / R) point from the center of the piezoelectric body 212.
  • the influence of the displacement and the stress of the piezoelectric element 210 can be minimized.
  • FIG. 10A is a side view of a button device using a piezoelectric element according to a fourth embodiment of the present invention
  • FIG. 10B is a view in which the piezoelectric element is deformed when an external force (or contact) F is applied to the button device of FIG. 10A. Shows an example.
  • the damper layer 250, the first adhesive layer 251, and the second adhesive layer 252 entirely cover the piezoelectric body 212 and the pillar member 245, and the dot 260 is damper.
  • the structure is provided in the layer 250, the first adhesive layer 251, and the second adhesive layer 252.
  • the damper layer 250 ′, the first adhesive layer 251 ′, and the second adhesive layer 252 ′ cover only the pillar member 245 without covering the piezoelectric body 212. It is a structure.
  • the damper layer 250 ′, the first adhesive layer 251 ′, and the second adhesive layer 252 ′ surround the piezoelectric element 210.
  • the damper layer 250 ′ supports the cover 230, and the damper layer 250 ′ provides a space between the piezoelectric body 212 and the cover 230.
  • a dot 260 is provided in a portion corresponding to a predetermined region with respect to the center of the piezoelectric body 212 in the space.
  • the vibration of the piezoelectric element 210 not only deforms the piezoelectric element 210 to be convex downward in FIG. 10 (ie, toward the support plate 220), but also convexly upward (ie, toward the cover 230). Let's do it.
  • the space provided by the damper layer 250 ′ may make it easier for the piezoelectric element 210 to be convexly deformed upward.
  • the damper layer 250 ′ provides a separation space to smoothly vibrate the piezoelectric element 210, thereby effectively transmitting the vibration of the piezoelectric element 210 to the user.

Landscapes

  • Apparatuses For Generation Of Mechanical Vibrations (AREA)

Abstract

La présente invention concerne un dispositif de bouton utilisant un élément piézoélectrique, qui comprend : un dispositif piézoélectrique comprenant un corps piézoélectrique sur une surface duquel sont formées une première électrode externe et une seconde électrode externe, et une plaque dont une surface est fixée à l'autre surface du corps piézoélectrique ; une plaque de support qui est agencée sur une surface du corps piézoélectrique ; un couvercle qui est fixé à l'autre surface de la plaque ; et une entretoise qui est disposée entre la plaque de support et la plaque de manière à ménager un espace dans lequel le dispositif piézoélectrique peut se déformer sous l'effet d'une force externe appliquée sur le couvercle.
PCT/KR2016/007287 2015-07-20 2016-07-06 Dispositif de bouton utilisant un élément piézoélectrique Ceased WO2017014452A1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
KR10-2015-0102293 2015-07-20
KR1020150102293A KR102193906B1 (ko) 2015-07-20 2015-07-20 압전 소자를 이용한 버튼 장치
KR1020150110930A KR102193908B1 (ko) 2015-08-06 2015-08-06 압전 소자를 이용한 버튼 장치
KR10-2015-0110930 2015-08-06

Publications (1)

Publication Number Publication Date
WO2017014452A1 true WO2017014452A1 (fr) 2017-01-26

Family

ID=57834187

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/KR2016/007287 Ceased WO2017014452A1 (fr) 2015-07-20 2016-07-06 Dispositif de bouton utilisant un élément piézoélectrique

Country Status (1)

Country Link
WO (1) WO2017014452A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2021209816A1 (fr) * 2020-04-13 2021-10-21 Stelect Pty. Ltd Transducteurs à ultrasons

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2000228131A (ja) * 1998-12-01 2000-08-15 Sony Corp スイッチ装置
JP2005285817A (ja) * 2004-03-26 2005-10-13 Murata Mfg Co Ltd 圧電素子、圧電アクチュエータ並びに圧電素子及び圧電アクチュエータの製造方法
JP2008227146A (ja) * 2007-03-13 2008-09-25 Seiko Epson Corp 圧電素子およびその製造方法
KR20110024210A (ko) * 2009-09-01 2011-03-09 주식회사 이노칩테크놀로지 압전 소자와 이를 이용한 압전 부저 및 압전 부저 모듈, 그 제조방법
JP2014194691A (ja) * 2013-03-29 2014-10-09 Murata Mfg Co Ltd 押圧検出センサ、および操作入力装置

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2000228131A (ja) * 1998-12-01 2000-08-15 Sony Corp スイッチ装置
JP2005285817A (ja) * 2004-03-26 2005-10-13 Murata Mfg Co Ltd 圧電素子、圧電アクチュエータ並びに圧電素子及び圧電アクチュエータの製造方法
JP2008227146A (ja) * 2007-03-13 2008-09-25 Seiko Epson Corp 圧電素子およびその製造方法
KR20110024210A (ko) * 2009-09-01 2011-03-09 주식회사 이노칩테크놀로지 압전 소자와 이를 이용한 압전 부저 및 압전 부저 모듈, 그 제조방법
JP2014194691A (ja) * 2013-03-29 2014-10-09 Murata Mfg Co Ltd 押圧検出センサ、および操作入力装置

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2021209816A1 (fr) * 2020-04-13 2021-10-21 Stelect Pty. Ltd Transducteurs à ultrasons

Similar Documents

Publication Publication Date Title
WO2018159926A1 (fr) Capteur tactile comprenant une antenne
WO2010123288A2 (fr) Vibrateur linéaire
EP3539298A1 (fr) Appareil d'affichage
WO2011068282A1 (fr) Microphone de système micro-électromécanique et son procédé de fabrication
WO2015102123A1 (fr) Haut-parleur piézo-électrique portable et son dispositif électronique
WO2021060755A1 (fr) Dispositif électronique comprenant un module à haut-parleur
WO2021221291A1 (fr) Module de capteur de pression et son procédé de commande
WO2016140442A1 (fr) Appareil de vibration à élément piézo-électrique qui fournit une rétroaction de vibration en temps réel
WO2023101098A1 (fr) Dispositif électronique portable
WO2018026154A1 (fr) Système pour fournir une stimulation tactile
WO2017122954A1 (fr) Microphone et procédé de fabrication de microphone
WO2017014452A1 (fr) Dispositif de bouton utilisant un élément piézoélectrique
WO2014181966A1 (fr) Sonde à onde ultrasonore unitaire, module de sonde à onde ultrasonore la comportant, et dispositif de sonde à onde ultrasonore la comportant
WO2020022698A1 (fr) Ligne de transmission ayant une durabilité de flexion améliorée
WO2016200094A1 (fr) Module de vibration piézoélectrique
WO2013137548A1 (fr) Activateur hautes performances polymère diélectrique, actionneur et moteur vibrant utilisant l'activateur, procédé de fonctionnement de l'actionneur, appareil fournissant un retour tactile, et appareil fournissant un retour tactile pur une personne malvoyante et malentendante
WO2018074674A1 (fr) Dispositif de sortie audio
WO2021080068A1 (fr) Boîtier de microphone mems
WO2018088774A1 (fr) Appareil d'affichage
WO2018169301A1 (fr) Capteur d'empreinte digitale ultrasonore et son procédé de fabrication
WO2013077544A1 (fr) Condensateur et son procédé de fabrication
WO2016182396A1 (fr) Dispositif de mesure de température d'élément de puissance à l'aide d'un élément piézoélectrique, dispositif de réduction de contrainte thermique, et son procédé de fabrication
WO2017051973A1 (fr) Module de présentation tactile utilisant un champ électrique de battement, dispositif de présentation tactile, tapis de souris vibrant et procédé de présentation de sensation tactile
WO2012067317A1 (fr) Microphone
KR102193908B1 (ko) 압전 소자를 이용한 버튼 장치

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 16827956

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 16827956

Country of ref document: EP

Kind code of ref document: A1