WO2015012062A1 - 電子機器 - Google Patents

電子機器 Download PDF

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Publication number
WO2015012062A1
WO2015012062A1 PCT/JP2014/067159 JP2014067159W WO2015012062A1 WO 2015012062 A1 WO2015012062 A1 WO 2015012062A1 JP 2014067159 W JP2014067159 W JP 2014067159W WO 2015012062 A1 WO2015012062 A1 WO 2015012062A1
Authority
WO
WIPO (PCT)
Prior art keywords
cover member
electronic device
main surface
vibration element
piezoelectric vibration
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/JP2014/067159
Other languages
English (en)
French (fr)
Japanese (ja)
Inventor
金巻　泰仁
知希 土屋
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.)
Kyocera Corp
Original Assignee
Kyocera Corp
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
Application filed by Kyocera Corp filed Critical Kyocera Corp
Publication of WO2015012062A1 publication Critical patent/WO2015012062A1/ja
Priority to US15/002,770 priority Critical patent/US9756749B2/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R7/00—Diaphragms for electromechanical transducers; Cones
    • H04R7/02—Diaphragms for electromechanical transducers; Cones characterised by the construction
    • H04R7/04—Plane diaphragms
    • H04R7/045—Plane diaphragms using the distributed mode principle, i.e. whereby the acoustic radiation is emanated from uniformly distributed free bending wave vibration induced in a stiff panel and not from pistonic motion
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K5/00—Casings, cabinets or drawers for electric apparatus
    • H05K5/02—Details
    • H05K5/03—Covers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/02—Constructional features of telephone sets
    • H04M1/03—Constructional features of telephone transmitters or receivers, e.g. telephone hand-sets
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R17/00—Piezoelectric transducers; Electrostrictive transducers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R2217/00—Details of magnetostrictive, piezoelectric, or electrostrictive transducers covered by H04R15/00 or H04R17/00 but not provided for in any of their subgroups
    • H04R2217/01—Non-planar magnetostrictive, piezoelectric or electrostrictive benders
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R2460/00—Details of hearing devices, i.e. of ear- or headphones covered by H04R1/10 or H04R5/033 but not provided for in any of their subgroups, or of hearing aids covered by H04R25/00 but not provided for in any of its subgroups
    • H04R2460/13—Hearing devices using bone conduction transducers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R2499/00—Aspects covered by H04R or H04S not otherwise provided for in their subgroups
    • H04R2499/10—General applications
    • H04R2499/11—Transducers incorporated or for use in hand-held devices, e.g. mobile phones, PDA's, camera's

Definitions

  • the present invention relates to an electronic device.
  • the present invention has been made in view of the above points, and an object thereof is to provide a technique capable of easily transmitting sound from an electronic device to a user.
  • One aspect of the electronic device is a flat surface provided on a display unit, a cover member that covers a display surface of the display unit provided on a surface of the electronic device, and an inner main surface of the cover member.
  • a piezoelectric vibration element positioned between the peripheral edge of the inner main surface and the display unit in view, a control unit that vibrates the piezoelectric vibration element based on a sound signal, and a housing to which the cover member is attached;
  • the cover member is provided between the peripheral end portion of the inner main surface of the cover member and the housing, and is attached to the cover member and an adhesive member for attaching the housing to the inner main surface of the cover member.
  • the piezoelectric vibration element is provided and reaches a part of the peripheral edge of the inner main surface, and is provided with a partial region where the sticking member does not exist, from the piezoelectric vibration element in the partial region Also the part of the periphery It provided in the region and between said housing further comprises an intervening member that does not inhibit vibration of the cover member than the sticking member.
  • FIG. 4 is a schematic diagram of a cross-sectional structure in the vertical direction (longitudinal direction) of the electronic apparatus 1.
  • FIG. 5 is a rear view of the cover member 2 provided in the electronic apparatus 1.
  • a piezoelectric vibration element 190 and a display panel 120 included in the electronic apparatus 1 are attached to the cover member 2 shown in FIG.
  • Electronic device 1 according to the present embodiment is a mobile phone, for example.
  • the electronic device 1 includes the cover member (also referred to as a cover panel) 2 that covers the display surface 120a of the display panel 120 (FIG. 4), the display panel 120, and the like. And a housing 3 for housing each component.
  • the shape of the electronic device 1 is a substantially rectangular plate shape in plan view.
  • the cover member 2 is plate-shaped and has a substantially rectangular shape in plan view.
  • the cover member 2 constitutes a part other than the peripheral end (peripheral part) in the front part of the electronic device 1.
  • the cover member 2 is formed of, for example, a transparent and relatively hard material.
  • glass tempered glass
  • sapphire artificial sapphire
  • sapphire means an industrially manufactured product made of aluminum oxide (AlO 3 ) crystal.
  • Sapphire may be transparent as long as it is transparent, and may be single crystal or polycrystalline.
  • the sapphire single crystal refers to a single crystal of alumina (Al 2 O 3 ), and in this specification, refers to a single crystal having an Al 2 O 3 purity of about 90% or more. It is preferable that the Al 2 O 3 purity is 99% or more from the standpoint that scratches are less prone and cracks and chips are more reliably suppressed.
  • An acrylic resin may be used as the material for the cover member 2.
  • the housing 3 has a substantially rectangular parallelepiped shape in which one main surface is partially opened.
  • the housing 3 constitutes a peripheral end portion, a side surface portion, and a back surface portion of the front surface portion of the electronic device 1.
  • the housing 3 is made of resin, for example.
  • polycarbonate resin, ABS resin, or nylon resin is used as the resin forming the housing 3.
  • casing 3 may be comprised only by one member, and may be comprised combining several members.
  • the cover member 2 is provided with a transparent display portion (also referred to as a display window) 2a through which the display on the display panel 120 is transmitted.
  • the display portion 2a has a rectangular shape in plan view, for example. Visible light output from the display panel 120 is taken out of the electronic apparatus 1 through the display portion 2a. The user can visually recognize information displayed on the display panel 120 from the outside of the electronic device 1 through the display portion 2a.
  • peripheral end portion (peripheral portion) 2b surrounding the display portion 2a in the cover member 2 is black, for example, by applying a film or the like. Thereby, most of the peripheral edge 2b is a non-display portion through which the display on the display panel 120 is not transmitted.
  • a touch panel 130 is attached to the inner main surface 21 of the cover member 2.
  • the display panel 120 which is a display part is affixed on the main surface on the opposite side to the main surface by the side of the inner main surface 21 in the touch panel 130.
  • the display panel 120 is attached to the inner main surface 21 of the cover member 2 via the touch panel 130.
  • a portion facing the display panel 120 is a display portion 2a.
  • the user can give various instructions to the electronic device 1 by operating the display portion 2a of the cover member 2 with a finger or the like.
  • the display panel 120 may be attached to the touch panel 130 via a sponge or the like.
  • a printed circuit board 250 on which various components such as a CPU 101 and a DSP 102 described later are mounted is provided inside the housing 3.
  • the printed circuit board 250 is disposed between the display panel 120 and the back surface 10 of the electronic device 1 (the back surface of the housing 3) so as to face the display panel 120.
  • a microphone hole 30 is formed at the lower end of the cover member 2. Further, as shown in FIG. 3, speaker holes 60 are formed in the back surface 10 of the electronic device 1, in other words, on the back surface of the housing 3.
  • a proximity sensor 140 In the housing 3, a proximity sensor 140, a front side imaging unit 160, a back side imaging unit 170, and a piezoelectric vibration element 190, which will be described later, are provided. As shown in FIGS. 2, 4, and 5, the piezoelectric vibration element 190 is attached to the inner main surface 21 of the cover member 2 by the attaching member 260.
  • a proximity sensor transparent portion 50 is provided at the upper end of the cover member 2 so that the proximity sensor 140 in the housing 3 can be visually recognized from the outside of the electronic device 1.
  • the proximity sensor 140 is attached to the proximity sensor transparent portion 50 from the inside thereof.
  • a front lens transparent portion 40 is provided at the upper end portion of the cover member 2 so that the imaging lens of the front side imaging unit 160 in the housing 3 can be visually recognized from the outside of the electronic device 1.
  • the imaging lens which the front side imaging part 160 has is attached to the transparent part 40 for front lenses from the inner side.
  • the back surface 10 of the electronic device 1 is provided with a back lens transparent portion 70 for allowing the imaging lens of the back surface side imaging unit 170 in the housing 3 to be visually recognized from the outside of the electronic device 1.
  • the imaging lens which the back surface side imaging part 170 has is attached to the transparent part 70 for back lens from the inner side.
  • FIG. 6 is a block diagram mainly showing an electrical configuration of the electronic apparatus 1.
  • the electronic device 1 is provided with a control unit 100, a wireless communication unit 110, a display panel 120, a touch panel 130, and a proximity sensor 140. Further, the electronic device 1 is provided with a microphone 150, a front side imaging unit 160, a back side imaging unit 170, an external speaker 180, a piezoelectric vibration element 190, and a battery 200. These components other than the cover member 2 provided in the electronic apparatus 1 are housed in the housing 3.
  • the control unit 100 includes a CPU (Central Processing Unit) 101, a DSP (Digital Signal Processing) 102, a storage unit 103, and the like.
  • the control unit 100 comprehensively manages the operation of the electronic device 1 by controlling other components of the electronic device 1.
  • the storage unit 103 includes a ROM (Read Only Memory), a RAM (Random Access Memory), and the like.
  • the storage unit 103 includes a main program and a plurality of control programs for controlling the electronic device 1, specifically, control components such as the wireless communication unit 110 and the display panel 120 included in the electronic device 1. Application programs and the like are stored.
  • Various functions of the control unit 100 are realized by the CPU 101 and the DSP 102 executing various programs in the storage unit 103.
  • the wireless communication unit 110 has an antenna 111.
  • the wireless communication unit 110 receives a signal from a mobile phone different from the electronic device 1 or a signal from a communication device such as a web server connected to the Internet by the antenna 111 via the base station.
  • Radio communication unit 110 performs amplification processing and down-conversion on the received signal and outputs the result to control unit 100.
  • the control unit 100 performs a demodulation process or the like on the input reception signal, and acquires a sound signal (sound information) indicating voice or music included in the reception signal.
  • the wireless communication unit 110 performs up-conversion and amplification processing on the transmission signal including the sound signal and the like generated by the control unit 100, and wirelessly transmits the processed transmission signal from the antenna 111.
  • a transmission signal from the antenna 111 is received through a base station by a mobile phone different from the electronic device 1 or a communication device connected to the Internet.
  • the display panel 120 which is a display unit is, for example, a liquid crystal display panel or an organic EL panel.
  • the display panel 120 displays various types of information such as characters, symbols, and graphics under the control of the control unit 100. Information displayed on the display panel 120 is visible to the user of the electronic device 1 through the display portion 2 a of the cover member 2.
  • the touch panel 130 is, for example, a projected electrostatic capacitance type touch panel.
  • the touch panel 130 detects contact of an object with the display portion 2 a of the cover member 2.
  • the touch panel 130 is affixed to the inner main surface of the cover member 2.
  • the touch panel 130 includes two sheet-like electrode sensors arranged to face each other. The two electrode sensors are bonded together with a transparent adhesive sheet.
  • One electrode sensor is formed with a plurality of elongated X electrodes each extending along the X-axis direction (for example, the left-right direction of the electronic device 1) and arranged in parallel to each other.
  • the other electrode sensor is formed with a plurality of elongated Y electrodes that extend along the Y-axis direction (for example, the vertical direction of the electronic device 1) and are arranged in parallel to each other.
  • the touch panel 130 generates an electrical signal indicating a change in capacitance between the X electrode and the Y electrode and outputs the electrical signal to the control unit 100.
  • the control unit 100 specifies the content of the operation performed on the display portion 2a of the cover member 2 based on the electrical signal, and performs an operation corresponding thereto.
  • the proximity sensor 140 is, for example, an infrared proximity sensor.
  • the proximity sensor 140 outputs a detection signal when an object approaches the proximity sensor 140 within a predetermined distance. This detection signal is input to the control unit 100.
  • the control unit 100 stops the operation detection function on the touch panel 130, for example.
  • the front side imaging unit 160 includes an imaging lens, an imaging element, and the like.
  • the front side imaging unit 160 captures still images and moving images based on the control by the control unit 100.
  • the imaging lens of the front side imaging unit 160 is visible from the front lens transparent unit 40 provided on the front surface of the electronic apparatus 1. Therefore, the front side imaging unit 160 can capture an image of an object that exists on the front side (the cover member 2 side) of the electronic device 1.
  • the back side imaging unit 170 includes an imaging lens and an imaging element.
  • the back side imaging unit 170 captures still images and moving images based on control by the control unit 100.
  • the imaging lens of the rear surface side imaging unit 170 is visible from the rear lens transparent portion 70 provided on the rear surface 10 of the electronic device 1. Therefore, the back surface side imaging unit 170 can image an object existing on the back surface 10 side of the electronic device 1.
  • the microphone 150 converts sound input from the outside of the electronic device 1 into an electrical sound signal and outputs the electrical sound signal to the control unit 100. Sound from the outside of the electronic device 1 is taken into the electronic device 1 from the microphone hole 30 provided on the front surface of the cover member 2 and input to the microphone 150.
  • the microphone hole 30 may be provided on the side surface of the electronic device 1 or on the back surface 10.
  • the external speaker 180 is, for example, a dynamic speaker.
  • the external speaker 180 converts an electrical sound signal from the control unit 100 into a sound and outputs the sound.
  • the sound output from the external speaker 180 is output to the outside through the speaker hole 60 provided on the back surface 10 of the electronic device 1.
  • the sound output from the speaker hole 60 has a volume that can be heard at a place away from the electronic device 1.
  • the piezoelectric vibration element 190 is attached to the inner main surface 21 of the cover member 2 provided on the front surface of the electronic device 1 by the attaching member 260.
  • the piezoelectric vibration element 190 is vibrated by a drive voltage supplied from the control unit 100.
  • the control unit 100 generates a driving voltage based on the sound signal and applies the driving voltage to the piezoelectric vibration element 190.
  • the cover member 2 vibrates based on the sound signal.
  • the reception sound is transmitted from the cover member 2 to the user.
  • the volume of the received sound is such that the user can hear it properly when the user puts his ear close to the cover member 2.
  • the received sound transmitted from the cover member 2 to the user will be described in detail later.
  • a double-sided tape or an adhesive is employed as the attaching member 260 for attaching the piezoelectric vibration element 190 to the cover member 2.
  • a double-sided tape employed as the sticking member 260 for example, a double-sided tape having impact resistance and strong adhesion is used.
  • a double-sided tape for example, there is a double-sided tape in which a nonwoven fabric is used as a base material and an acrylic adhesive is provided on both surfaces of the base material. Even if the electronic apparatus 1 falls, it can suppress that the piezoelectric vibration element 190 is damaged by employ
  • adopted as the sticking member 260 it is not restricted to this.
  • the battery 200 outputs the power source of the electronic device 1.
  • the power output from the battery 200 is supplied to each electronic component included in the control unit 100 and the wireless communication unit 110 included in the electronic device 1.
  • ⁇ Details of piezoelectric vibration element> 7 and 8 are a top view and a side view showing the structure of the piezoelectric vibration element 190, respectively.
  • the piezoelectric vibration element 190 has a long shape in one direction.
  • the piezoelectric vibration element 190 has a rectangular elongated plate shape in plan view.
  • the piezoelectric vibration element 190 has, for example, a bimorph structure.
  • the piezoelectric vibration element 190 includes a first piezoelectric ceramic plate 190a and a second piezoelectric ceramic plate 190b that are bonded to each other via a shim material 190c.
  • the piezoelectric vibration element 190 when a positive voltage is applied to the first piezoelectric ceramic plate 190a and a negative voltage is applied to the second piezoelectric ceramic plate 190b, the first piezoelectric ceramic plate 190a extends along the longitudinal direction.
  • the second piezoelectric ceramic plate 190b expands and contracts along the longitudinal direction. Accordingly, as shown in FIG. 9, the piezoelectric vibration element 190 bends in a mountain shape with the first piezoelectric ceramic plate 190a facing outside.
  • the piezoelectric vibration element 190 when a negative voltage is applied to the first piezoelectric ceramic plate 190a and a positive voltage is applied to the second piezoelectric ceramic plate 190b, the first piezoelectric ceramic plate 190a is in the longitudinal direction.
  • the second piezoelectric ceramic plate 190b extends along the longitudinal direction. Accordingly, as shown in FIG. 10, the piezoelectric vibration element 190 bends in a mountain shape with the second piezoelectric ceramic plate 190b on the outside.
  • the piezoelectric vibration element 190 performs flexural vibration by alternately taking the state of FIG. 9 and the state of FIG.
  • the controller 100 flexures and vibrates the piezoelectric vibration element 190 by applying an alternating voltage in which a positive voltage and a negative voltage appear alternately between the first piezoelectric ceramic plate 190a and the second piezoelectric ceramic plate 190b.
  • the piezoelectric vibration element 190 having such a structure is disposed at the peripheral end portion 211 of the inner main surface 21 of the cover member 2 as shown in FIG. Specifically, the piezoelectric vibration element 190 is disposed at the center in the left-right direction (short direction perpendicular to the longitudinal direction) at the upper end of the inner main surface 21 of the cover member 2. As shown in FIG. 5, the piezoelectric vibrating element 190 is provided between the peripheral edge 210 of the inner main surface 21 of the cover member 2 and the display panel 120 in a plan view when the cover member 2 is viewed from the inner main surface 21 side. Is located.
  • the longitudinal direction of the piezoelectric vibration element 190 coincides with the left-right direction of the cover member 2.
  • the longitudinal center of the piezoelectric vibration element 190 coincides with the center in the left-right direction at the upper end portion of the inner main surface 21 of the cover member 2.
  • the displacement amount is greatest at the center in the longitudinal direction. Therefore, when the center of the piezoelectric vibration element 190 in the longitudinal direction coincides with the center in the left-right direction at the upper end portion of the inner main surface 21 of the cover member 2, the displacement amount of the piezoelectric vibration element 190 due to flexural vibration is maximized.
  • the piezoelectric vibration element 190 vibrates the cover member 2 so that air conduction sound and conduction sound are transmitted from the cover member 2 to the user.
  • the vibration of the piezoelectric vibration element 190 itself is transmitted to the cover member 2, air conduction sound and conduction sound are transmitted from the cover member 2 to the user.
  • the air conduction sound is a sound that is recognized by the human brain by sound waves (air vibrations) entering the ear canal hole (so-called “ear hole”) vibrating the eardrum.
  • the conduction sound is sound that is recognized by the human brain when the auricle is vibrated and the vibration of the auricle is transmitted to the eardrum and the eardrum vibrates.
  • the air conduction sound and the conduction sound will be described in detail.
  • FIG. 11 is a diagram for explaining air conduction sound and conduction sound.
  • FIG. 11 shows the structure of the ear of the user of the electronic device 1.
  • a wavy line 400 indicates a conduction path of a sound signal (sound information) when an airway sound is recognized by the brain.
  • a solid line 410 indicates a conduction path of the sound signal when the conduction sound is recognized by the brain.
  • the cover member 2 vibrates and a sound wave is output from the cover member 2.
  • the cover member 2 When the user holds the electronic device 1 in his hand and brings the cover member 2 of the electronic device 1 close to the user's auricle 300, or the cover member 2 of the electronic device 1 is moved to the user's auricle 300.
  • the cover member 2 of the electronic device 1 When touched (contacted), sound waves output from the cover member 2 enter the ear canal hole 310.
  • the sound wave from the cover member 2 travels in the ear canal hole 310 and vibrates the eardrum 320.
  • the vibration of the eardrum 320 is transmitted to the ossicle 330, and the ossicle 330 vibrates. Then, the vibration of the ossicle 330 is transmitted to the cochlea 340 and converted into an electric signal in the cochlea 340. This electric signal is transmitted to the brain through the auditory nerve 350, and the received sound is recognized in the brain. In this way, air conduction sound is transmitted from the cover member 2 to the user.
  • the auricle 300 is vibrated by the piezoelectric vibration element 190.
  • the cover member 2 is vibrated.
  • the vibration of the auricle 300 is transmitted to the eardrum 320, and the eardrum 320 vibrates.
  • the vibration of the eardrum 320 is transmitted to the ossicle 330, and the ossicle 330 vibrates.
  • the vibration of the ossicle 330 is transmitted to the cochlea 340 and converted into an electric signal in the cochlea 340.
  • This electric signal is transmitted to the brain through the auditory nerve 350, and the received sound is recognized in the brain. In this manner, the conduction sound is transmitted from the cover member 2 to the user.
  • the auricular cartilage 300a inside the auricle 300 is also shown.
  • Bone conduction sound is sound that is recognized by the human brain by vibrating the skull and directly stimulating the inner ear such as the cochlea.
  • the sound signal transmission path when the bone conduction sound is recognized by the brain is indicated by a plurality of arcs 420.
  • the piezoelectric vibration element 190 appropriately transmits the air conduction sound and the conduction sound from the cover member 2 to the user of the electronic device 1 by appropriately vibrating the cover member 2 on the front surface. Can do.
  • the user can hear the air conduction sound from the cover member 2 by bringing the ear (auricle) close to the cover member 2.
  • the user can hear the air conduction sound and the conduction sound from the cover member 2 by bringing the ear (auricle) into contact with the cover member 2.
  • the structure is devised so that air conduction sound and conduction sound can be appropriately transmitted to the user.
  • Various merits are produced by configuring the electronic device 1 so that air conduction sound and conduction sound can be transmitted to the user.
  • the user can hear a sound when the cover member 2 is applied to the ear, the user can make a call without worrying about the position of the electronic device 1 where the ear is applied.
  • the user can make the surrounding noise difficult to hear while increasing the volume of the conduction sound by pressing the ear firmly against the cover member 2. Therefore, the user can make a call appropriately even when the ambient noise is high.
  • the user can recognize the received sound from the electronic device 1 by placing the cover member 2 on the ear (more specifically, the auricle) even when the earplug or the earphone is attached to the ear. Can do. Further, the user can recognize the received sound from the electronic device 1 by applying the cover member 2 to the headphones even when the headphones are attached to the ears.
  • the portion of the cover member 2 to which the piezoelectric vibration element 190 is attached becomes relatively easy to vibrate. Therefore, when the user brings the ear close to or presses the upper end (particularly the central portion in the left-right direction of the upper end) of the cover member 2 to which the piezoelectric vibration element 190 is attached. The sound from the cover member 2 can be easily heard.
  • the cover member 2 and the housing 3 are attached by the adhesive member 600 so that the cover member 2 and the housing 3 are attached.
  • the sticking member 600 is provided on the inner main surface 21 of the cover member 2.
  • the inner main surface 21 of the cover member 2 is attached to the housing 3 via the attaching member 600.
  • the inner main surface 21 of the cover member 2 is attached to the attachment surface of the housing 3 via the adhesive member 600. Also good.
  • a double-sided tape or an adhesive is employed.
  • a waterproof double-sided tape or a waterproof adhesive is used as the sticking member 600.
  • the waterproof double-sided tape for example, there is a double-sided tape in which a foam is used as a base material and an acrylic adhesive is provided on both surfaces of the base material.
  • the waterproof adhesive for example, an adhesive made of a thermosetting resin is used. The waterproof double-sided tape and the waterproof adhesive are not limited thereto.
  • FIG. 12 is a plan view of the cover member 2 when the cover member 2 is viewed from the inner main surface 21 side when the housing 3 is pulled away from the cover member 2.
  • FIG. 13 is a partially enlarged view of the structure shown in FIG.
  • the sticking member 600 is indicated by hatching with a downward slope to the right. Therefore, an area indicated by hatching with a downward slope on the inner main surface 21 of the cover member 2 is attached to the housing 3.
  • an interposition member 650 described later is indicated by hatching with a downward slope to the left.
  • 14 is an enlarged view showing the periphery of the piezoelectric vibration element 190 in the cross-sectional structure shown in FIG. 4 described above.
  • FIG. 14 shows a cross-sectional structure of the electronic device 1 in a sideways state in which the upper end of the electronic device 1 is located on the right side.
  • a sticking member 600 is provided at the peripheral end (peripheral edge) 211 of the inner main surface 21 of the cover member 2. Therefore, when the inner main surface 21 of the cover member 2 is attached to the housing 3, the adhesive member 600 is provided between the peripheral end portion 211 of the inner main surface 21 of the cover member 2 and the housing 3. Yes. As shown in FIG. 12, the sticking member 600 is formed on the peripheral end portion 211 of the inner main surface 21 so as to surround the entire periphery of the display panel 120 in a plan view when the cover member 2 is viewed from the inner main surface 21 side. Is provided.
  • the imaging lens of the front side imaging unit 160 is attached to the front lens transparent portion 40 of the cover member 2 from the inside, the sticking member 600 is attached to the inner main surface 21 of the cover member 2.
  • the front lens transparent portion 40 is not provided in the region where the front lens transparent portion 40 is formed and the ring-shaped adjacent region 217 adjacent to the entire periphery of the region.
  • the proximity sensor 140 is attached from the inside to the proximity sensor transparent portion 50 of the cover member 2, the proximity sensor transparent portion 50 is formed on the inner main surface 21 of the cover member 2. It is not provided in the region that is formed and the ring-shaped adjacent region 218 that is adjacent to the entire periphery of the region.
  • the first region 212 on the inner main surface 21 of the cover member 2 closer to the piezoelectric vibration element 190 than the display panel 120 includes a region 216 provided with the piezoelectric vibration element 190, and A second region 213 in which the sticking member 600 does not exist is provided to reach a part 210 a of the peripheral edge 210 of the inner main surface 21.
  • the intervening member 650 that does not inhibit the vibration of the cover member 2 more than the adhesive member 600 is provided in the third region 214 closer to the part 210 a of the peripheral edge 210 than the piezoelectric vibration element 190. . That is, the interposition member 650 is provided between the third region 214 of the inner main surface 21 of the cover member 2 and the housing 3.
  • the first region 212 is an upper end portion of the inner main surface 21 of the cover member 2.
  • the second region 213 includes the region 216 so that the outer shape 213a of the second region 213 does not contact the entire region of the outer shape 216a of the region 216 provided with the piezoelectric vibration element 190, and the inner main surface. 21 reaches a part of the upper end of 21.
  • the third region 214 is a region above the piezoelectric vibration element 190 in the second region 213 and reaches a part of the upper end of the inner main surface 21.
  • the interposition member 650 is directed from the part 210 a of the peripheral edge 210 of the inner main surface 21 (part of the upper end of the inner main surface 21) toward the piezoelectric vibration element 190. It is provided so as not to contact the piezoelectric vibration element 190.
  • the interposition member 650 exists in the ring-shaped adjacent region 215 adjacent to the entire periphery of the region 216 where the piezoelectric vibration element 190 is provided. Absent.
  • the interposition member 650 a member softer than the pasting member 600 is employed.
  • the interposition member 650 for example, a member in which a double-sided tape is attached to both surfaces of a cushion material (elastic material) is employed.
  • the interposition member 650 is affixed to the inner main surface 21 of the cover member 2 with a double-sided tape affixed to one surface of the cushion material.
  • the interposition member 650 is affixed on the inner surface of the housing
  • the cushion material included in the interposition member 650 for example, a foam is adopted.
  • a foam for example, a polyolefin foam, a polyester foam or a urethane foam is used.
  • the double-sided tape included in the interposition member 650 for example, a double-sided tape in which an acrylic adhesive is provided on both sides of a base material made of polyester is employed.
  • the interposition member 650 exists in the vicinity of the part 210 a of the peripheral edge 210, and all the parts of the peripheral edge 210 other than the part 210 a are present.
  • An adhesive member 600 is present in the vicinity. Therefore, in the vicinity of the peripheral edge 210 (hereinafter sometimes referred to as “the peripheral peripheral area of the internal main surface 21”) on the inner main surface 21 of the cover member 2, there is no gap along the peripheral edge 210. Either 600 or the interposition member 650 exists.
  • the adhesive member 600 such as a double-sided tape or an adhesive
  • the adhesive member 600 becomes larger or smaller. It becomes a factor that inhibits vibration.
  • the adhesive member 600 is present along the periphery 210 in the vicinity of the periphery of the inner main surface 21 of the cover member 2 without a gap.
  • the sticking member 600 is present in a portion near the periphery of the inner main surface 21 in the vicinity of the piezoelectric vibration element 190. That is, a portion existing in the vicinity of the piezoelectric vibration element 190 in the peripheral vicinity region of the inner main surface 21 is attached to the housing 3 by the attaching member 600. Therefore, the portion around the piezoelectric vibration element 190 in the cover member 2 is less likely to vibrate.
  • the piezoelectric vibration element 190 is provided in the first region 212 on the inner main surface 21 of the cover member 2 on the piezoelectric vibration element 190 side of the display panel 120.
  • region 213 in which the sticking member 600 does not exist is provided which reaches the part 210a of the periphery 210 of the said inner side main surface 21 including the area
  • the cover member is located between the third region 214 in the second region 213 closer to the part 210a of the peripheral edge 210 than the piezoelectric vibration element 190 and the housing 3 rather than the adhesive member 600.
  • An interposition member 650 that does not inhibit the vibration of 2 is provided. By providing the interposition member 650 that does not hinder the vibration of the cover member 2 as compared with the pasting member 600, the portion around the piezoelectric vibration element 190 in the cover member 2 can be easily vibrated, and the outside of the electronic device 1 can be vibrated. It is possible to prevent dust and the like from entering the electronic device 1.
  • the inclusion member 650 includes a cushion material, so that the cover member 2 and the housing 3 can be prevented from being damaged due to the electronic device 1 being dropped or the like.
  • a double-sided tape may be provided on only one surface of the cushion material, and the interposition member 650 may be attached to the inner main surface 21 of the cover member 2 with the double-sided tape.
  • the contact surface of the interposition member 650 with the housing 3 is not fixed to the housing 3. Therefore, the portion of the cover member 2 to which the interposition member 650 is attached is easy to move, and as a result, the portion of the cover member 2 around the piezoelectric vibration element 190 is more likely to vibrate. Therefore, the sound from the electronic device 1 is further easily transmitted to the user.
  • a double-sided tape may be provided on only one surface of the cushion material, and the interposition member 650 may be attached to the inner surface of the housing 3 with the double-sided tape.
  • the contact surface of the interposition member 650 with the cover member 2 is not fixed to the cover member 2. Therefore, the portion of the cover member 2 that is in contact with the interposition member 650 is likely to move, and as a result, the portion of the cover member 2 around the piezoelectric vibration element 190 is more likely to vibrate. Therefore, the sound from the electronic device 1 is further easily transmitted to the user.
  • the interposition member 650 between the cover member 2 and the housing 3 has reached the peripheral edge 210 of the inner main surface 21 of the cover member 2, but as illustrated in FIG. Further, it does not have to reach the peripheral edge 210 of the inner main surface 21 of the cover member 2. Even in such a case, it is possible to prevent dust and the like from entering the electronic device 1 from the outside of the electronic device 1 while facilitating vibration in the cover member 2 around the piezoelectric vibration element 190. Can do.
  • FIG. 17 is a partially enlarged plan view of the cover member 2 when the cover member 2 included in the electronic apparatus 1 according to the present modification is viewed from the inner main surface 21 side.
  • FIG. 17 shows a part of the cover member 2 when the cover member 2 is viewed from the inner main surface 21 side when the housing 3 is pulled away from the cover member 2.
  • FIG. 18 is an enlarged view showing a part of the cross-sectional structure of the electronic apparatus 1 according to this modification.
  • the above-described interposition member 650 is not provided, and the interposition member 650 is disposed in the second region 213 of the inner main surface 21 of the cover member 2. Does not exist. Accordingly, nothing is interposed between the third region 214 of the inner main surface 21 of the cover member 2 and the housing 3. Thereby, although dust or the like easily enters the electronic device 1 from the outside of the electronic device 1, the portion (second region 213) around the piezoelectric vibration element 190 in the cover member 2 is further easily vibrated. Therefore, the sound from the electronic device 1 is further easily transmitted to the user.
  • the third region 214 of the inner main surface 21 of the cover member 2 and the housing 3 are not in contact, but may be in contact as shown in FIG. 19.
  • the cover member 2 is compared with the case shown in FIG. 19.
  • the portion around the piezoelectric vibration element 190 (second region 213) is likely to vibrate.
  • FIG. 19 when the third region 214 of the inner main surface 21 of the cover member 2 and the housing 3 are in contact with each other, compared to the case shown in FIG. It becomes difficult for dust and the like from the outside of the device 1 to enter the electronic device 1.
  • the present invention is applied to a mobile phone has been described as an example, but the present invention can also be applied to an electronic device other than a mobile phone.

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  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Multimedia (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Telephone Set Structure (AREA)
PCT/JP2014/067159 2013-07-22 2014-06-27 電子機器 Ceased WO2015012062A1 (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US15/002,770 US9756749B2 (en) 2013-07-22 2016-01-21 Electronic apparatus

Applications Claiming Priority (2)

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JP2013151598A JP5707454B2 (ja) 2013-07-22 2013-07-22 電子機器
JP2013-151598 2013-07-22

Related Child Applications (1)

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US15/002,770 Continuation US9756749B2 (en) 2013-07-22 2016-01-21 Electronic apparatus

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WO2015012062A1 true WO2015012062A1 (ja) 2015-01-29

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JP (1) JP5707454B2 (enExample)
WO (1) WO2015012062A1 (enExample)

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US9756749B2 (en) 2017-09-05
JP2015023490A (ja) 2015-02-02
JP5707454B2 (ja) 2015-04-30

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