WO2020175813A1 - 초박형 트랜스듀서를 포함하는 스피커 - Google Patents

초박형 트랜스듀서를 포함하는 스피커 Download PDF

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Publication number
WO2020175813A1
WO2020175813A1 PCT/KR2020/001659 KR2020001659W WO2020175813A1 WO 2020175813 A1 WO2020175813 A1 WO 2020175813A1 KR 2020001659 W KR2020001659 W KR 2020001659W WO 2020175813 A1 WO2020175813 A1 WO 2020175813A1
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WO
WIPO (PCT)
Prior art keywords
transducer
voice coil
diaphragm
speaker
magnet
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/KR2020/001659
Other languages
English (en)
French (fr)
Inventor
드밴티어앨런
코첸도어퍼펠릭스
베졸라안드리
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.)
Samsung Electronics Co Ltd
Original Assignee
Samsung Electronics 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 US16/588,905 external-priority patent/US11102585B2/en
Application filed by Samsung Electronics Co Ltd filed Critical Samsung Electronics Co Ltd
Priority to EP20763909.7A priority Critical patent/EP3876553B1/en
Publication of WO2020175813A1 publication Critical patent/WO2020175813A1/ko
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; ELECTRIC HEARING AIDS; PUBLIC ADDRESS SYSTEMS
    • H04R9/00—Transducers of moving-coil, moving-strip, or moving-wire type
    • H04R9/02—Details
    • H04R9/04—Construction, mounting, or centering of coil
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; ELECTRIC HEARING AIDS; PUBLIC ADDRESS SYSTEMS
    • H04R9/00—Transducers of moving-coil, moving-strip, or moving-wire type
    • H04R9/06—Loudspeakers
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F1/00—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties
    • H01F1/01—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials
    • H01F1/03—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity
    • H01F1/032—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of hard-magnetic materials
    • H01F1/04—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of hard-magnetic materials metals or alloys
    • H01F1/047—Alloys characterised by their composition
    • H01F1/053—Alloys characterised by their composition containing rare earth metals
    • H01F1/055—Alloys characterised by their composition containing rare earth metals and magnetic transition metals, e.g. SmCo5
    • H01F1/057—Alloys characterised by their composition containing rare earth metals and magnetic transition metals, e.g. SmCo5 and IIIa elements, e.g. Nd2Fe14B
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; ELECTRIC HEARING AIDS; 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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; ELECTRIC HEARING AIDS; PUBLIC ADDRESS SYSTEMS
    • H04R7/00—Diaphragms for electromechanical transducers; Cones
    • H04R7/16—Mounting or tensioning of diaphragms or cones
    • H04R7/18—Mounting or tensioning of diaphragms or cones at the periphery
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; ELECTRIC HEARING AIDS; PUBLIC ADDRESS SYSTEMS
    • H04R7/00—Diaphragms for electromechanical transducers; Cones
    • H04R7/16—Mounting or tensioning of diaphragms or cones
    • H04R7/18—Mounting or tensioning of diaphragms or cones at the periphery
    • H04R7/20—Securing diaphragm or cone resiliently to support by flexible material, springs, cords, or strands
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; ELECTRIC HEARING AIDS; PUBLIC ADDRESS SYSTEMS
    • H04R9/00—Transducers of moving-coil, moving-strip, or moving-wire type
    • H04R9/02—Details
    • H04R9/025—Magnetic circuit
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; ELECTRIC HEARING AIDS; PUBLIC ADDRESS SYSTEMS
    • H04R2307/00—Details of diaphragms or cones for electromechanical transducers, their suspension or their manufacture covered by H04R7/00 or H04R31/003, not provided for in any of its subgroups
    • H04R2307/025—Diaphragms comprising polymeric materials
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; ELECTRIC HEARING AIDS; PUBLIC ADDRESS SYSTEMS
    • H04R9/00—Transducers of moving-coil, moving-strip, or moving-wire type
    • H04R9/02—Details
    • H04R9/04—Construction, mounting, or centering of coil
    • H04R9/041—Centering
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; ELECTRIC HEARING AIDS; PUBLIC ADDRESS SYSTEMS
    • H04R9/00—Transducers of moving-coil, moving-strip, or moving-wire type
    • H04R9/02—Details
    • H04R9/04—Construction, mounting, or centering of coil
    • H04R9/045—Mounting

Definitions

  • One or more embodiments generally relate to a speaker comprising a transducer.
  • the slot loading the transducer tends to be shaken more because the acoustic load to the diaphragm is asymmetric.
  • An exemplary embodiment provides a speaker comprising a slim transducer having a diaphragm comprising a hole.
  • the transducer includes a diaphragm including a hole having a first horizontal width; a voice coil at least partially disposed within the hole; and a column structure at least partially disposed within the voice coil.
  • the voice coil has a ring shape, and the ring shape has an outer horizontal width and an inner horizontal width, and the outer horizontal width may be the same as or smaller than the first horizontal width of the hole.
  • the voice coil has a ring shape, the ring shape has an outer horizontal width and an inner horizontal width, and the column structure may have a second horizontal width equal to or smaller than the inner horizontal width of the ring shape.
  • the column structure may include an upper magnet; an intermediate plate disposed under the upper magnet; and a lower magnet disposed under the intermediate plate.
  • the upper magnet is configured to apply an upper magnetic field to the voice coil; 2020/175813 1»(:1 ⁇ 1 ⁇ 2020/001659
  • the lower magnet is configured to apply a lower magnetic field to the voice coil; the intermediate plate may be configured to guide at least one of the upper magnetic field and the lower magnetic field toward the voice coil.
  • An upper plate is further included on the upper magnet, and the upper plate is
  • It can be configured to assist in directing at least some of it towards the voice coil.
  • It may contain at least one more magnetic flux coupled to the upper plate.
  • a lower plate is further included under the lower magnet, and the lower plate is
  • It can be configured to assist in directing at least a portion of the magnetic field towards the voice coil.
  • It may contain at least one more magnetic flux coupled to the lower plate.
  • the upper and lower magnets contain neodymium (10: 111 111); the middle plate may contain low carbon steel.
  • the hole has a vertical axis with respect to the diaphragm at its center, and further includes an upper plate disposed on the upper magnet and centered on the vertical axis, and the upper plate further includes at least a part of the upper magnetic field toward the voice coil. It is configured to assist in directing; disposed under the lower magnet, further comprising a lower plate centered on the vertical bamboo, and the lower plate may be configured to assist in directing at least a portion of the lower magnetic field toward the voice coil. .
  • the hole and the voice coil are circular; the column structure may be cylindrical.
  • the first horizontal width may be a diameter of a circle.
  • It may contain at least one of a suspension or an external suspension.
  • It may further include a lubricant disposed between the voice coil and the column structure.
  • This lubricant may contain at least one of a magnetic fluid or a lubricant.
  • the diaphragm may have any one of a planar shape, a concave shape or a convex shape.
  • the diaphragm may contain a structural blowing agent.
  • the hole has a vertical axis with respect to the diaphragm at its center, and the ring shape can be centered on the vertical axis.
  • the column structure can be centered on the vertical bamboo.
  • the speaker including the transducer according to the exemplary embodiment may have a slim structure.
  • the transducer according to the exemplary embodiment may improve sound quality by reducing distortion.
  • FIG. 1 is a cross-sectional view of a planar microspeaker of a comparative example.
  • FIG. 27 Figure shows a cross-sectional view of an exemplary ultra-thin transducer according to an embodiment will be.
  • 2B is a cross-sectional view of an ultra-thin type showing an exemplary magnetic flux according to an embodiment.
  • FIG 3 is a cross-sectional view of a slot-mounted ultra-thin transducer showing a tower type exhaust port and a floor type exhaust port (venting) according to an exemplary embodiment.
  • FIG. 4 is a cross-sectional view of a slot-rod ultra-thin transducer showing an asymmetric pressure on a diaphragm that causes oscillating motion according to an exemplary embodiment.
  • 5A to 5G are plan views of a slot-rod ultra-thin transducer having various airflow outlets according to an embodiment.
  • FIG. 6 is a graph showing a trend of a frequency in a swing motion band for the examples of FIGS. 5A to 5G according to an exemplary embodiment.
  • FIG. 7 is a graph showing a trend of sound pressure (SPL) versus frequency for the examples of FIGS. 5A to 5G according to an exemplary embodiment.
  • SPL sound pressure
  • Fig. 8a is an ultra-thin type with a flat diaphragm according to an exemplary embodiment
  • Fig. 8b shows a convexly inclined diaphragm according to an exemplary embodiment.
  • Fig. 8c shows a concave inclined diaphragm according to an exemplary embodiment.
  • Fig. 8D is a cross-sectional view of an ultra-thin transducer with a planar diaphragm and an external suspension according to an exemplary embodiment.
  • Fig. 8E is a cross-sectional view of an ultra-thin transducer having a structural diaphragm and an external suspension according to an exemplary embodiment.
  • 8F is a cross-sectional view of an ultra-thin transducer having an alternative shaped voice coil, a structural diaphragm, and an external suspension according to an exemplary embodiment.
  • 8G is a cross-sectional view of an ultra-thin transducer having a voice coil, a structural diaphragm, and an external suspension having alternative shapes, according to an exemplary embodiment.
  • FIG. 41 Figure is a cross-sectional view of an ultra-thin transducer with a flat diaphragm and an internal suspension according to an exemplary embodiment.
  • FIG. 42 Figure is a cross-sectional view of an ultra-thin transducer having a planar diaphragm configured for slot radiation and an upper plate and a lower plate according to an exemplary embodiment.
  • 8J is a cross-sectional view of an ultra-thin transducer with a flat diaphragm and a ferxofluid seal, according to an exemplary embodiment.
  • Fig. 8K is a planar diaphragm and a lubricating oil seal according to an exemplary embodiment.
  • 81 is a planar diaphragm, having an upper plate and a lower plate according to an exemplary embodiment This is a cross-sectional view of an ultra-thin transducer.
  • 8M is a cross-sectional view of an ultra-thin transducer having a flat diaphragm, a perforated upper plate, and a porous lower plate according to an exemplary embodiment.
  • Fig. 8N is a cross-sectional view of an ultra-thin transducer having a planar diaphragm configured for slot radiation, according to an exemplary embodiment.
  • Fig. 8o is a cross-sectional view of an ultra-thin transducer having a flat diaphragm configured for slot radiation and an upper plate and a lower plate according to an exemplary embodiment.
  • Fig. 9a shows a traditional diagram with a planar diaphragm configured for slot radiation.
  • Fig. 9B is a cross-sectional view of an ultra-thin transducer having a planar diaphragm configured for slot radiation, according to an exemplary embodiment.
  • Fig. 10a shows a traditional diagram with a planar diaphragm configured for direct radiation.
  • 10B is a cross-sectional view of an ultra-thin transducer having a planar diaphragm configured for direct radiation, according to an exemplary embodiment.
  • 11A is a cross-sectional view of an ultra-thin transducer having an inner surround to help prevent short circuiting, according to an exemplary embodiment.
  • Figure l ib is to prevent short circuiting, according to an exemplary embodiment.
  • 11C is a cross-sectional view of an ultra-thin transducer having a magnetic fluid seal according to an exemplary embodiment.
  • 12A is an upper perspective view of an ultra-thin transducer having an upper plate according to an exemplary embodiment.
  • FIG. 12B is an ultra-thin type of FIG. 12A with the upper plate removed according to an exemplary embodiment
  • FIGS. 12A and 12B are diagrams of the ultra-thin transducer of FIGS. 12A and 12B according to an exemplary embodiment.
  • FIG. 13 is a top perspective view of an ultra-thin transducer having a porous upper plate according to an exemplary embodiment.
  • Fig. 14 is an ultra-thin type with an oval diaphragm according to an exemplary embodiment
  • One or more embodiments relate to a speaker comprising a transducer, relating to a slim acoustic transducer comprising a diaphragm having a hole.
  • a hole may have a substantially centered center on the vertical axis of the diaphragm.
  • the terms “loudspeaker”, “loudspeaker device” and “loudspeaker system” may be used interchangeably in this specification.
  • listening point used in this specification is generally
  • the diaphragm moves within a magnetic gap.
  • FIG. 1 is a cross-sectional view of a planar microspeaker 100 of a comparative example.
  • the speaker 100 includes a magnet 110, an upper plate 120, a bottom plate (or frame) 125, a grill (or front cover) 130, a diaphragm 135 and a voice coil 140.
  • the magnet 110 system portion of the flat microspeaker 100 occupies a significant volume of space and limits the movement of the diaphragm 135 relative to the overall built-in height 150 (the thickness of the acoustic module including the enclosure). Peak to peak
  • the displacement 155 may be less than 40% of the total thickness.
  • the magnetic flux 160 is formed between the magnet 110 and the voice coil 140.
  • the transducer 200 is a lower (or bottom) magnet 210 (for example, a ring-shaped, circular ,Cylindrical type, etc.), middle plate 220 (eg, ring type, circle, cylinder type, etc.), upper (or top) magnet 215 (eg, ring type, circle, cylinder type, etc.) and voice coil (240) (E.g., ring, circle, ellipse, etc.).
  • the magnetic system may be located at least partially within the inner circumference of the voice coil 240.
  • the magnetic system is substantially centered on a vertical axis.
  • the column structure may have a horizontal width equal to or less than the inner horizontal width of the voice coil 240 structure.
  • the column structure is arranged under the upper magnet 215 and the upper magnet 215. It may include a sign 220, a lower magnet 2W placed under the middle plate 220.
  • the magnet system minimizes the space from movement of the diaphragm 225.
  • the secondary magnet 215 may include a rare earth magnetic material such as neodymium (Nd), neodymium iron boron (NdFeB), samarium cobalt, etc.
  • the intermediate plate 220 is a low carbon steel, soft magnetic steel. Or, it can be made from a similar material.
  • the diaphragm 225 is paper, polypropylene (PP), polyether ether ketone (PEEK), polycarbonate (PC), polyethylene terephthalate (PET), silk, glass fiber, carbon fiber, titanium, aluminum, It may contain at least one of aluminum-magnesium alloy, nickel, and beryllium. 2020/175813 1»(:1 ⁇ 1 ⁇ 2020/001659
  • the upper plate of the column structure may be a ring shape substantially centered on the vertical axis.
  • the upper plate is directed to at least a portion of the upper magnetic field substantially parallel to the vertical axis away from the voice coil 240.
  • the lower plate of the column structure may be substantially centered on the vertical axis.
  • the lower plate directs at least a portion of the lower magnetic field substantially parallel to a horizontal axis adjacent to the vertical axis away from the voice coil 240. It may contain a lower magnet (0) to help it.
  • the lower magnet 210 may be a magnetic ring, for example.
  • an enclosure comprising a lower frame 230 and an upper frame 235 (e.g., low carbon steel, soft magnetic steel, plastic, aluminum, etc.) may be twice the magnetic return path.
  • the peak-to-peak displacement (270) can be greater than 50% of the total thickness (275).
  • the diaphragm 225 may include or be connected to an external suspension 250 (eg, torus, etc.).
  • the transducer 200 is a sound wave outside the transducer 200. It may include a slot or exhaust port 260 for radiating to the listening environment and a slot or exhaust port 265 for exhausting to the internal speaker volume.
  • the upper and lower plates of the column structure may be part of a frame (ie, lower frame 230 and upper frame 235).
  • the diaphragm 225 may include a hole (or space, opening, etc.) 226.
  • the hole 226 may have a substantially vertical axis relative to the diaphragm 225 about a center. 226 may have a horizontal width.
  • Voice coil 240 may be positioned at least partially within hole 226. Voice coil 240 may be substantially centered on the vertical axis of diaphragm 225 (e.g. , Ring shape, circular shape, oval shape, etc.) Voice coil 240 may have an outer horizontal width and an inner horizontal width, where the outer horizontal width may be less than or equal to the horizontal width of the hole 226. .
  • the magnetic system delivers low-frequency output in a very thin form factor.
  • the transducer 200 can optimize the stack up-tolerance for maximum displacement. According to some embodiments, the enclosure becomes a functional part of the transducer 200 design. In some embodiments, the transducer The magnet system (or motor) of 200 is located at the center of the diaphragm 225 (not located below the diaphragm as in the traditional design), and provides a thin design with increased range of motion. In some cases There is no yoke/gap (direct magnetic return path) that increases the range of motion of the diaphragm 225 using the fringe field of the magnet system. The transducer 200 also improves the symmetry of the electromagnetic force and inductance during in/outstroke. In some embodiments, the transducer 200 provides a symmetrical magnetic layout, which improves sound quality by reducing distortion.
  • the transducer 200 is self-returning on both sides of the column structure
  • the diaphragm 225 may be mounted in the center of the voice coil 240, which is It improves the symmetry of the outstroke. It can also reduce or eliminate the former (bobbin) used in the conventional transducer design. Also, the strategically positioned air bent diaphragm of the transducer 200. The vibration mode of the 225 can be reduced, which reduces the possibility of distortion and friction against the voice coil 240 magnetic system structure.
  • the transducer 200 is a mobile phone, camcorder, PDA ( It can be implemented in devices such as personal digital assistants, digital cameras, laptop computers, TVs, DVDs, and microelectronic equipment.
  • Figure 2b shows a cross-sectional view of an exemplary ultra-thin transducer 200 showing an exemplary magnetic flux 280 according to some embodiments.
  • the lower magnet 210 and the upper magnet 215 are It has opposite polarity to increase the magnetic flux 280 at the edge of the pole plate.
  • the voice coil 240 and the magnetic system structure can be located in the center of the diaphragm 225.
  • the magnetic system is located in the center of the drive and Symmetric motor design can reduce even-order harmonic distortion.
  • Figure 3 shows a cross-sectional view of an exemplary slot-loaded ultra-thin transducer 200 showing upper slot 260 and lower slot 265 venting in accordance with some embodiments.
  • the transducer 200 discharges air from the upper slot 260 directly to the listening environment and directly from the lower slot 265 to the internal speaker volume 320.
  • Figure 4 shows a cross-sectional view of an exemplary slot-rod ultra-thin transducer 200 showing an asymmetric pressure (indicated by arrows 4W and 411) on the diaphragm 225 causing oscillating motion in accordance with some embodiments.
  • the slot loading of the transducer has advantages, but the slot loading of the thin transducer is the acoustic rod of the diaphragm.
  • the transducer can exhibit symmetrical behavior with respect to the internal and external strokes.
  • the electromagnetic force, coil inductance and suspension stiffness of the voice coil are preferably as symmetric as possible in the rest of the position.
  • Conventional slim transducer designs use a slim form factor. Harm symmetry is sacrificed.
  • Some embodiments include electromagnetic and coil
  • Figures 5a to 5g show a plan view of an exemplary slot-rod ultra-thin transducer with various airflow outlets according to some embodiments.
  • Figure 5a is a slot-rod in a TV device 510 according to a conventional approach.
  • a top view of the transducer 200 and the internal speaker volume 320 is shown.
  • the transducer 200 includes an oval diaphragm 520.
  • the voice coil 240 surrounds the magnetic system.
  • the transducer 200 spans the entire front of the transducer 200 and includes an upper slot 260 (Fig. 2A). 2b) to discharge air in a straight line to the listening environment (e.g. room, etc.).
  • the transducer 200 also discharges air for air flow from the lower slot 265 to the internal speaker volume 320. (Fig. 2a, Fig. 2b).
  • FIG. 5B is an exemplary slot-loaded ultra-thin transducer 200 having a side outlet slot (540/541) for airflow discharge and an internal speaker volume 320 of the TV device 510 according to some embodiments.
  • the improved air exhaust for the slotted transducer 200 forces air exhaust through the side outlet slots 540 and 541, which increases the asymmetry of the diaphragm 225.
  • Improves Fig. 2A, Fig. 2B).
  • the transducer 200 upper and lower walls to minimize the amount of fluctuation exhibited by the diaphragm 225 (and outlet slots 530, 531 with slots venting to the internal speaker volume 320). Includes the optimal configuration of
  • Figure 5c is a front open (front open) having an airflow outlet according to some embodiments
  • FIG. 5D is a slot with airflow from the rear center and sides for the inner speaker volume 320 according to some embodiments.
  • Fig. 5e is a front view to the listening environment according to some embodiments.
  • 5F is an exemplary slot-rod ultra-thin transducer 200 having a rear-center airflow outlet with an internal speaker volume 320 according to some embodiments.
  • 5G shows a top view of an exemplary slot-rod ultra-thin transducer 200 having a back-sides airflow outlet to an internal speaker volume 320 in accordance with some embodiments.
  • Figure 6 is a motion motion (6W) for the example of Figures 5a to 5g, according to some embodiments
  • a graph 600 for the tendency of the frequency 615 is shown.
  • Curve 620 corresponds to the front sides exhaust with the rear-center exhaust;
  • curve 621 corresponds to the rear-back -sides and center vents correspond to the front sides vents;
  • curve 622 corresponds to the front-sides vents with the back-center vents;
  • Curve 623 corresponds to the front exhaust with the back-sides and center exhaust;
  • curve 624 corresponds to the back-sides with the front sides exhaust.
  • curve 625 corresponds to the front exhaust port with the back-sides exhaust port.
  • the minimum swinging characteristic is achieved by the following configuration (less is better): rear-center open (and side closed) (see Fig.5f) When open (see Fig. 5a) (620), rear-central and lateral open (see Fig. 5d) with the anterior side open (see Fig. 5b) (621). 2020/175813 1»(:1 ⁇ 1 ⁇ 2020/001659
  • Fig. 7 shows a graph 700 of a sound pressure level of 1 3 ⁇ 4 (Q 0) versus a frequency (G 5) for the example of Figs. 5 according to some embodiments.
  • the curve 720 is a rear side.
  • the center exhaust port corresponds to the front exhaust port;
  • curve 721 corresponds to the front side exhaust port with the rear-side and center exhaust port;
  • the curve 722 corresponds to the front side exhaust port with the rear-center exhaust port;
  • the curve (723) corresponds to the front side exhaust with the rear-central exhaust;
  • curve 724 corresponds to the front exhaust with the rear side exhaust;
  • the curve 725 corresponds to the front side exhaust with the rear side exhaust.
  • rear central and side exhaust see Fig. 5 (see 1), with front exhaust (see Fig. 50) 720), and rear Central and side exhaust (see Fig. 5 (see 1) and front side exhaust (see Fig. 3 ⁇ 4)) (721).
  • FIG. 800 shows a cross-sectional view of an exemplary ultra-thin transducer 800 having a planar diaphragm 820 in accordance with some embodiments.
  • FIG. 80 shows a cross-sectional view of an exemplary ultra-thin transducer 800 having a planar diaphragm 820 in accordance with some embodiments.
  • the transducer 800 includes a lower magnet 210, an upper magnet 215, an intermediate plate 220, a voice coil 240, a planar diaphragm 820, and a structure (or frame) 830.
  • the structure 830 may be composed of low carbon steel, soft magnetic steel, plastic, aluminum, or the like.
  • the transducer 801 is a lower magnet 210.
  • Figure shows a cross-sectional view of an exemplary ultra-thin transducer 802 having a concave rectangular diaphragm 822 in accordance with some embodiments.
  • exemplary ultra-thin transducer 802 having a concave rectangular diaphragm 822 in accordance with some embodiments.
  • the transducer 802 includes a lower magnet 210, an upper magnet 215, an intermediate plate 220, a voice coil 240, a concave square diaphragm 822, and a structure (or frame) 830.
  • Figure 8 (1 is a cross-sectional view of an exemplary ultra-thin transducer 803 having a planar diaphragm 820 and an external suspension (eg, torus (), etc.) 840 according to some embodiments
  • the transducer 803 includes a lower magnet 210, an upper magnet 215, an intermediate plate 220, a voice coil 240, a flat diaphragm 820, an external suspension 840, and a structure. (Or frame) 830.
  • Figure 86 is a structural diaphragm 850 and an external suspension according to some embodiments
  • a cross-sectional view of an exemplary ultra-thin transducer 804 having 840 is shown.
  • the transducer 804 is a lower magnet 210, an upper magnet 215, an intermediate plate 220, and a voice A coil 240, a structural diaphragm 850, an outer suspension 840, and a structure (or frame) 830.
  • the structural diaphragm 850 is a structural foam (& ⁇ 1 high) or the like. Can be made with
  • Figure 8 is an exemplary ultra-thin with a voice coil 241 of an alternative shape, a structural diaphragm 850 and an external suspension 840, according to some embodiments. A cross-sectional view of the transducer 805 is shown. In some embodiments,
  • Transducer 805 is a lower magnet (210), upper magnet (215), intermediate plate (220), voice coil (241), structural diaphragm (850), external suspension (840) and structure (or frame)
  • the voice coil 240 may be asymmetric or semi-asymmetric in shape (e.g., reducing dimensions, changing angle, thickness, changing width/height, etc.). Voice coil 240 (has an overall shape different from that of Fig. 2a).
  • FIG. 8G is an exemplary ultra-thin type having a voice coil 242 of another alternative shape, a structural diaphragm 850 and an external suspension 840 according to some embodiments.
  • a cross-sectional view of the transducer 806 is shown. In some embodiments,
  • Transducer 806 is a lower magnet (210), upper magnet (215), intermediate plate (220), voice coil (241), structural diaphragm (850), external suspension (840) and structure (or frame) (830)
  • the voice coil 242 may be an asymmetrical shape or semi-asymmetric (e.g., reduced dimension, tilted, thickness changed, width changed/height change, etc.) It has a different overall shape from the voice coil 240 (FIG. 2A) and the voice coil 241 (FIG. 8F).
  • Figure 8H shows a cross-sectional view of another exemplary ultra-thin transducer 807 with a planar diaphragm 820 and an internal suspension 860 according to some embodiments.
  • the transducer 807 is A lower magnet 210, an upper magnet 215, an intermediate plate 220, a voice coil 240, a diaphragm 820, an inner suspension 860, and a structure (or frame) 830.
  • the inner suspension 860 may be a foaming agent suspension, a polyfoam suspension, or the like.
  • the transducer 808 is a lower magnet 210, an upper magnet 215, an intermediate plate 220, a voice coil 240, a diaphragm 820, an upper plate 865 and a rear plate 866
  • the slot or exhaust port 260 emits sound waves to the listening environment (e.g., room, etc.), and the slot or exhaust port 265 internally emits sound waves at the speaker volume.
  • the top plate 865 and the rear plate 866 may be made of low carbon steel, soft magnetic steel, or the like.
  • Fig. 8j is a planar diaphragm 820 and a magnetic fluid according to some embodiments
  • a cross-sectional view of an exemplary ultra-thin transducer 809 with a seal 841 is shown.
  • the transducer 809 includes a lower magnet 210, an upper magnet 215, an intermediate plate 220, a voice coil 240, a diaphragm 820, a magnetic fluid seal 841 and a structure ( Or frame) 830.
  • the magnetic fluid seal 841 utilizes the response of the magnetic field to the applied magnetic field of the magnetic system of the transducer 809.
  • the magnetic fluid may function as a liquid zero-ring.
  • the magnetic fluid seal 841 allows the transducer 809 to function more efficiently with improved audio response and improved power handling. Audio magnetic fluids are two types of synthetic hydrocarbons and esters. 2020/175813 1»(:1 ⁇ 1 ⁇ 2020/001659
  • the saturation magnetization (maximum value of the magnetic moment per unit volume when all domains are aligned) is determined by the properties of the floating magnetic material and the volume load of the material Physical and chemical properties such as density and viscosity closely correspond to the physical and chemical properties of the carrier liquid.
  • Fig. 8 furnace is a planar diaphragm 820 and a lubricant oil seal 842 according to some embodiments.
  • the transducer 810 includes a lower magnet 210, an upper magnet 215, an intermediate plate 220, a voice coil 240, and Diaphragm 820, lubricant seal 842 and structure (or frame) 830
  • the lubricating oil seal 842 may be a type of lubricating oil sealing compound, such as a lubricating oil seal compound comprising silicone.
  • 81 shows a flat diaphragm 820, an upper plate (8 units) and a rear surface according to some embodiments.
  • the transducer 811 includes a lower magnet (0), an upper magnet 215, an intermediate plate 220, a voice coil 240, a diaphragm 820, an upper plate (8 units), and a rear plate ( 870) and a structure (or frame) 830.
  • the upper plate (8 units) and the rear plate 870 may be made of low carbon steel, soft carbon steel, etc.
  • the rear plate (8 7 0) may be formed separately from the structure (or frame) 830 or may be formed integrally.
  • Figure 8111 according to some embodiments, a flat diaphragm 820, a perforated upper plate
  • the transducer 812 includes a lower magnet 210, an upper magnet 215, an intermediate plate 220, a voice coil 240, and
  • the upper plate (8 units/872/873) and the rear plate (870/874) may be made of low carbon steel, soft magnetic steel, etc., and the upper and rear plates 873 and 874 Part of it is perforated so that the sound is released into the listening environment and speaker enclosure, and the other part of the top and rear plates (870, 8 units) can be rigid to maximize the flux near the voice coil 240.
  • Ultra-thin transducers ( 812) is shown for direct radiation of sound (as opposed to slotted radiation), but some embodiments may include combinations of slotted and direct radiation.
  • FIG. 1 shows a cross-sectional view of an exemplary ultra-thin transducer 813 having a planar diaphragm 820 configured for slot radiation in accordance with some embodiments.
  • the transducer 813 is a lower magnet (813). 210), an upper magnet 215, an intermediate plate 220, a voice coil 240, a diaphragm 820 and a frame 880.
  • the slot or exhaust port 260 is a sound wave listening environment (E.g., room, etc.), and the slot or exhaust port 265 radiates sound waves internally at the speaker volume.
  • the frame 880 is made of low carbon steel, soft magnetic steel, plastic, aluminum, etc. Can be made 2020/175813 1»(:1 ⁇ 1 ⁇ 2020/001659
  • Figure 80 is, according to some embodiments, a flat diaphragm 820, upper plate (8 units) and rear
  • a cross-sectional view of an exemplary ultra-thin transducer 814 having a plate 870 is shown.
  • the transducer 814 is a lower magnet 210, an upper magnet 215, an intermediate plate 220, a voice A coil 240, a diaphragm 820, a rear plate (8 7 0), an upper plate (8 units), and a structure (or frame) 811.
  • the slot or exhaust port 260 is a sound wave listening environment (e.g. E.g., room, etc.), and the slot or exhaust port 265 radiates sound waves into the speaker volume.
  • the frame 881 may be made of low carbon steel, soft magnetic steel, plastic, aluminum, or the like.
  • the rear plate 870 and the upper plate (8 units) may be formed separately from the structure (or frame) 881 or may be integrally formed.
  • FIG. 9 Also shows a cross-sectional view of an exemplary traditional transducer 900 with a planar diaphragm configured for slot radiation.
  • the transducer 900 has an upper part with a width 920 of 1111111, and a width of 2 with a width 930! ⁇ Including a frame (0) having a connecting portion with a width 940 of 6111111, and a lower portion with a width of 950 of 11p11.
  • the transducer 900 has a 2111111 peak displacement.
  • FIG. 9 shows a cross-sectional view of an exemplary ultra-thin transducer 950 having a planar diaphragm configured for slot radiation according to some embodiments.
  • the transducer 950 is a voice coil 960 (e.g., a voice coil 960). Similar to the voice coil 240, Fig. 2, the upper part with a width 921 of 1111111, a connection part with a width 931 of 2 ⁇ , a connection part with a width of 941 and 4111111, and a lower part with a width of 1111111
  • the branches include a frame 970 and an inner suspension 980 (e.g., similar to the inner suspension 860, Fig. 83 ⁇ 4. The total thickness is 8111111 and the trans
  • the transducer 950 has a 2111111 peak displacement.
  • the transducer 950 has a total thickness that is 20% less (i.e., 2 111111) than the transducer 900.
  • Figure 1 is an exemplary view with a planar diaphragm configured for direct radiation.
  • the transducer 1000 has a peak displacement (1020) of 1111111, an upper portion having a width of 1111111 (1025), a connection portion having a width of 2111111 (1030), and a width of 1111111 (1035). ) With a lower part (1010), the total thickness is 5111111.
  • 1A5 shows a planar diaphragm configured for direct radiation according to some embodiments.
  • a cross-sectional view of an exemplary ultra-thin transducer 1050 is shown.
  • the transducer 1050 is a voice coil 1060 with a width (1026) of 10111111 raised portion, a width (1031) of 2111111 raised portion, and width (1036) of 1_ lower portion of the lower portion of the voice coil (1060) (for example, the voice coil (240) ), similar to, Fig. 2&), internal suspension 1080 (similar to internal suspension 860, including Fig. 83 ⁇ 4.
  • the total thickness of the transducer 1050 is 4 111111 and the peak displacement is 1 111111.
  • Transducer 1050 Has a total thickness that is 20% smaller (i.e. 2 111111) than the transducer 1000.
  • Figure 1 shows a cross-sectional view of an exemplary ultra-thin transducer 00 with an inner surround 1120 to prevent short circuits in accordance with some embodiments.
  • 2020/175813 1 (:1 ⁇ 1 ⁇ 2020/001659
  • the diaphragm When moving forward, the diaphragm compresses the air in the front while the medium is sparse at the opposite end, which creates a phase difference of 180 12. At low frequencies,
  • the diaphragm moves slowly to allow the air to travel from one side to the other and balances the pressure difference. This creates a low-frequency airflow but no sound (acoustic short circuit).
  • an inner surround 1120 Helps prevent acoustic shorts from occurring.
  • the inner surround (1120) can be made of 3 ⁇ 4 1, rubber, etc.
  • FIG. 1 shows a cross-sectional view of an exemplary ultra-thin transducer 01 having a compressible material 1130 to prevent acoustic short circuits in accordance with some embodiments.
  • the compressible material 1130 is compressible. It may be a blowing agent or a similar material. In some embodiments, the addition of compressible material 1130 helps prevent acoustic shorts from occurring.
  • Fig. 1 is a magnetic fluid seal 841 (see Fig. 3 ⁇ 4) according to some embodiments.
  • a cross-sectional view of an exemplary ultra-thin transducer 02 is shown.
  • the addition of a magnetic fluid seal 841 helps to prevent acoustic shorts from occurring and may also reduce the oscillation tendency.
  • Figure 12 &cir&amp is an exemplary ultra-thin type having an upper plate 1220 according to some embodiments.
  • a top perspective view of the transducer 1200 is shown.
  • the transducer 1220 is shown.
  • FIG. 13 ⁇ 4 is a top perspective view of the exemplary ultra-thin transducer 1200 of 12 <Desc/Clms Page number 12> even with the top plate 1220 removed.
  • the transducer 1200 includes a magnetic system including an upper magnet 215, a voice coil 240 and a diaphragm 1230 (for example, a diaphragm 520, similar to a diagram). Includes.
  • FIG. 1 shows a cross-sectional view of the exemplary ultra-thin transducer 1200 of FIG. 12 15.
  • the transducer 1300 is a magnet system (see FIG. ), voice coil 240 and diaphragm 1320.
  • sound waves are emitted through the perforations of the upper plate 1310.
  • the diaphragm 1320 has a circular or oval shape.
  • FIG. 14 shows a plan view of another exemplary ultra-thin transducer 1400 having an elliptical diaphragm 1410 according to some embodiments.
  • Various diaphragm shapes such as circular shapes, elliptical shapes, etc. of different sizes may be used. It should be noted.

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  • Engineering & Computer Science (AREA)
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  • Acoustics & Sound (AREA)
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  • Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)

Abstract

트랜스듀서를 포함하는 스피커가 개시된다. 개시된 스피커는, 홀을 가지는 다이어프램과, 홀 내에 적어도 부분적으로 배치된 보이스 코일과, 보이스 코일 내에 적어도 부분적으로 배치된 칼럼 구조를 포함할 수 있다. 보이스 코일은 링 형상을 가지고, 상기 링 형상은 외부 수평 폭 및 내부 수평 폭을 가지며, 상기 외부 수평 폭은 상기 홀의 제1 수평 폭과 동일하거나 작을 수 있다.

Description

() 2020/175813 1»(：1/10公020/001659 명세서
발명의 명칭:초박형트랜스듀서를포함하는스피커 기술분야
[1] 하나이상의실시예는일반적으로트랜스듀서를포함하는스피커에관한
것으로,특히,홀을포함하는다이어프램을가진슬림한음향트랜스듀서를 포함하는스피커에관한것이다.
배경기술
[2] 텔레비전,노트북,휴대폰은점점얇아지지만,여전히더나은음질（예를들어, 더저음출력）들이요구된다.저주파사운드（예를들어,저음）를생성하기위해 라우드스피커는넓은표면적또는다이어프램의큰이동에의해달성될수있는 많은공기를움직여야한다.얇은트랜스듀서의넓은표면적은구부러지거나 흔들리는경향이있으며,이로인해왜곡및기타기계적문제가발생한다.
[3] 종종다이어프램을노출시키는것이가능하지않다.대신에,사운드가음향 모듈의전체내장높이（두께）를증가시키는협소한슬롯을통해방출되어야 한다.트랜스듀서를로딩하는슬롯의장점은접촉되는것을방지하고,산업 디자인과저촉되는최소화를방지하는것을포함한다.하지만,얇은
트랜스듀서를로딩하는슬롯은다이어프램에의음향로드가비대칭이기되기 때문에더많이흔들리게되는경향이있다.
발명의상세한설명
기술적과제
[4] 예시적인실시예는홀을포함하는다이어프램을가진슬림한트랜스듀서를 포함하는스피커를제공한다.
과제해결수단
[5] 예시적인실시예에따른트랜스듀서를포함하는스피커에 있어서,상기
트랜스듀서는제 1수평폭을가지는홀을포함하는다이어프램;상기홀내에 적어도부분적으로배치된보이스코일;및상기보이스코일내에적어도 부분적으로배치된칼럼구조;를포함한다.
[6] 상기보이스코일은링형상을가지고,상기링형상은외부수평폭및내부 수평폭을가지며,상기외부수평폭은상기홀의제 1수평폭과동일하거나 작을수있다.
[7] 상기보이스코일은링형상을가지고,상기링형상은외부수평폭및내부 수평폭을가지며,상기칼럼구조는상기링형상의내부수평폭과동일하거나 작은제 2수평폭을가질수있다.
[8] 상기칼럼구조는,상부자석 ;상기상부자석아래에배치된중간판;및상기 중간판아래에배치된하부자석을포함할수있다.
[9] 상기상부자석은상기보이스코일에상부자기장을인가하도록구성되며 ; 2020/175813 1»（：1^1{2020/001659
2 상기하부자석은상기보이스코일에하부자기장을인가하도록구성되며;상기 중간판은상기보이스코일을향해상기상부자기장또는하부자기장중 적어도하나를안내하도록구성될수있다.
[1이 상기상부자석위에상부판을더포함하고,상기상부판은상부자기장의
적어도일부를보이스코일쪽으로지향시키는것을보조하도록구성될수있다.
[11] 상기상부판에결합된적어도하나의자속을더포함할수있다.
[12] 상기하부자석아래에하부판을더포함하고,상기하부판은상기하부
자기장의적어도일부를보이스코일쪽으로지향시키는것을보조하도록 구성될수있다.
[13] 상기하부판에결합된적어도하나의자속을더포함할수있다.
[14] 상기상부자석과하부자석은네오디뮴（1 0  111 111）을포함하고;상기중간 판은저탄소강을포함할수있다.
[15] 상기홀은그중심에상기다이어프램에대한수직축을가지고,상기상부자석 위에배치되고상기수직축에중심을둔상부판을더포함하고,상기상부판은 상부자기장의적어도일부를상기보이스코일쪽으로지향시키는것을 보조하도록구성되고;상기하부자석아래에배치되고,상기수직죽에중심을 둔하부판을더포함하고,상기하부판은상기보이스코일쪽으로하부 자기장의적어도일부를지향시키는것을보조하도록구성될수있다.
[16] 상기홀과보이스코일이원형이고;상기칼럼구조는원통형일수있다.
[17] 상기제 1수평폭은원형의직경일수있다.
[18] 상기다이어프램에부착된서스펜션을더포함하고,상기서스펜션은내부
서스펜션또는외부서스펜션중적어도하나를포함할수있다.
[19] 상기보이스코일및칼럼구조사이에배치되는윤활유를더포함할수있다.
[2이 상기윤활제가자성유체또는윤활유중적어도하나를포함할수있다.
[21] 상기다이어프램은평면형상,오목형상또는볼록형상중어느하나의형상을 가질수있다.
[22] 상기다이어프램은구조적발포제를포함할수있다.
[23] 상기홀은그중심에상기다이어프램에대한수직축을가지고,상기링형상은 상기수직축을중심으로할수있다.
[24] 상기칼럼구조는상기수직죽에중심을둘수있다.
발명의효과
[25] 예시적인실시예에따른트랜스듀서를포함하는스피커는슬림한구조를가질 수있다.예시적인실시예에따른트랜스듀서는왜곡을감소시킴으로써음질을 향상시킬수있다.
도면의간단한설명
[26] 도 1은비교예의평면마이크로스피커의단면도를도시한것이다.
[27] 도 는실시예에따른,예시적인초박형트랜스듀서의단면도를도시한 것이다.
[28] 도 2b는실시예에따른,예시적인자속을보이는초박형의단면도를도시한 것이다.
[29] 도 3은예시적인실시예에따른탑형배기구및바닥형배기구 (venting)를보인 슬롯탑재초박형트랜스듀서의단면도이다.
[3이 도 4는예시적인실시예에따른요동모션을일으키는다이어프램에비대칭 압력을보이는슬롯로드초박형트랜스듀서의단면도이다.
[31] 도 5a내지도 5g는실시예에따른다양한기류배출구를가진슬롯로드초박형 트랜스듀서의평면도를도시한것이다.
[32] 도 6은예시적인실시예에따른,도 5a내지도 5g의 예에대한요동모션대 주파수의경향성의그래프를도시한것이다.
[33] 도 7은예시적인실시예에따른,도 5a내지도 5g의 예에대한음압 (SPL)대 주파수의경향성의그래프를도시한것이다.
[34] 도 8a는예시적인실시예에따른,평면다이어프램을가진초박형
트랜스듀서의단면도이다.
[35] 도 8b는예시적인실시예에따른,볼록하게기울어진다이어프램을가진
초박형트랜스듀서의단면도이다.
[36] 도 8c는예시적인실시예에따른,오목하게기울어진다이어프램을가진
초박형트랜스듀서의단면도이다.
[37] 도 8d는예시적인실시예에따른,평면다이어프램과외부서스팬션을가진 초박형트랜스듀서의단면도이다.
[38] 도 8e는예시적인실시예에따른,구조적인다이어프램과외부서스팬션을 가진초박형트랜스듀서의단면도이다.
[39] 도 8f는예시적인실시예에따른,대체형상 (alternative shaped)을가진보이스 코일,구조적인다이어프램,외부서스팬션을가진초박형트랜스듀서의 단면도이다.
[40] 도 8g는예시적인실시예에따른,다른대체형상 (alternative shaped)을가진 보이스코일,구조적인다이어프램,외부서스팬션을가진초박형트랜스듀서의 단면도이다.
[41] 도 는예시적인실시예에따른,평면다이어프램과내부서스팬션을가진 초박형트랜스듀서의단면도이다.
[42] 도 는예시적인실시예에따른,슬롯방사를위해구성된평면다이어프램, 상부판과하부판을가진초박형트랜스듀서의단면도이다.
[43] 도 8j는예시적인실시예에따른,평면다이어프램과자성유체씨일 (ferxofluid seal)을가진초박형트랜스듀서의단면도이다.
[44] 도 8k는예시적인실시예에따른,평면다이어프램과윤활유씨일 (grease
seal)을가진초박형트랜스듀서의단면도이다.
[45] 도 81는예시적인실시예에따른,평면다이어프램,상부판과하부판을가진 초박형트랜스듀서의단면도이다.
[46] 도 8m은예시적인실시예에따른,평면다이어프램,다공성 (perforated)상부판, 다공성하부판을가진초박형트랜스듀서의단면도이다.
[47] 도 8n은예시적인실시예에따른,슬롯방사를위해구성된평면다이어프램을 가진초박형트랜스듀서의단면도이다.
[48] 도 8o는예시적인실시예에따른,슬롯방사를위해구성된평면다이어프램, 상부판과하부판을가진초박형트랜스듀서의단면도이다.
[49] 도 9a는슬롯방사를위해구성된평면다이어프램을가진전통적인
트랜스듀서의단면도이다.
[5이 도 9b는예시적인실시예에따른,슬롯방사를위해구성된평면다이어프램을 가진초박형트랜스듀서의단면도이다.
[51] 도 10a는직접방사를위해구성된평면다이어프램을가진전통적인
트랜스듀서의단면도이다.
[52] 도 10b는예시적인실시예에따른,직접방사를위해구성된평면다이어프램을 가진초박형트랜스듀서의단면도이다.
[53] 도 11a는예시적인실시예에따른,단락 (short circuiting)을방지하는데도움이 되도록내부서라운드를가진초박형트랜스듀서의단면도이다.
[54] 도 l ib는예시적인실시예에따른,음향단락 (short circuiting)을방지하도록
가압물질을가진초박형트랜스듀서의단면도이다.
[55] 도 11c는예시적인실시예에따른,자성유체씨일을가진초박형트랜스듀서의 단면도이다.
[56] 도 12a는예시적인실시예에따른,상부판을가진초박형트랜스듀서의상부 사시도이다.
[57] 도 12b는예시적인실시예에따른,상부판이제거된도 12a의초박형
트랜스듀서의상부사시도이다.
[58] 도 12c는예시적인실시예에따른,도 12a,도 12b의초박형트랜스듀서의
단면도이다.
[59] 도 13은예시적인실시예에따른,다공성상부판을가진초박형트랜스듀서의 상부사시도이다.
[6이 도 14는예시적인실시예에따른,타원형다이어프램을가진초박형
트랜스듀서의평면도를도시한것이다.
발명의실시를위한형태
[61] 아래의설명은하나이상의실시예들의일반적인원리를설명하기위하여
이루어진것이고,본원에청구된발명의개념을제한하는것은아니다.또한,본 명세서에설명된특정특징은다양한가능한조합및순열각각의다른설명된 특징과조합하여사용될수있다.본명세서에서달리구체적으로정의되지않는 한,모든용어는본명세서에서암시된의미뿐만아니라당업자에의해이해된 의미뿐만아니라,사전,논문등에서정의된의미를포함하여그들의가장넓은 가능한해석으로제공되어야한다.
[62] 하나이상의실시예는,트랜스듀서를포함하는스피커에관한것으로,홀을 가지는다이어프램을포함한슬림한음향트랜스듀서에관한것이다.예를들어, 홀은다이어프램의수직축상에실질적으로중심을가질수있다.설명의 목적을위해,용어 "라우드스피커”, "라우드스피커장치”및 "라우드스피커 시스템”은본명세서에서상호교환적으로사용될수있다.
[63] 설명의목적을위해,본명세서에서사용된용어 "청취위치”는일반적으로
라우드스피커장치에대한청취자의상대적위치를말한다.
[64] 설명의목적을위해 ,다이어프램은자기갭 (magnetic gap)내에서움직이는
보이스코일에부착되고,다이어프램을진동시키고,소리를생성하는
멤브레인일수있다.
[65] 도 1은비교예의평면마이크로스피커 (100)의단면도이다. 평면마이크로
스피커 (100)는자석 (110),상부판 (120),바닥판 (또는프레임) (125),그릴 (또는 전방커버) (130),다이어프램 (135)과보이스코일 (140)을포함한다.평면 마이크로스피커 (100)의자석 (110)시스템부분은상당한부피의공간을 차지하고,전체적인내장높이 (150)(인클로저를포함하는음향모듈두께)에 대한다이어프램 (135)의이동을제한한다.다이어프램의피크대피크
변위 (155)는전체두께의 40 %미만일수있다.자속 (160)은자석 (110)과보이스 코일 (140)사이에형성된다.
[66] 도 2a는예시적인실시예에따른초박막트랜스듀서 (200)의단면도이다.일부 실시 예에서,트랜스듀서 (200)는하부 (또는바닥)자석 (210) (예를들어,링형, 원형,원통형등),중간판 (220)(예를들어,링형,원형,원통형등),상부 (또는탑) 자석 (215) (예를들어,링형,원형,원통형등)및보이스코일 (240)(예를들면,링 형,원형,타원형등)을포함한다.일부실시예에서,자석시스템은보이스코일 (240)의내주내에적어도부분적으로배치될수있다.자석시스템은실질적으로 수직축에중심을둔칼럼구조를가질수있다.칼럼구조는보이스코일 (240) 구조형상의내부수평폭과같거나그보다작은수평폭을가질수있다.칼럼 구조는,상부자석 (215),상부자석 (215)아래배치된중간판 (220),중간판 (220) 아래배치된하부자석 (2W)을포함할수있다.자석시스템은다이어프램 (225)의 이동으로부터의공간을최소화한다.일부실시예에서 ,하부자석 (210)과상부 자석 (215)은네오디뮴 (Nd),네오디뮴철붕소 (NdFeB),사마륨코발트 (Samarium cobalt)등과같은희토류자성재료를포함할수있다.일부실시예에서,중간 판 (220)은저탄소강,연자성강또는이와유사한재료로만들어질수있다.
일부실시예에서,다이어프램 (225)은종이,폴리프로필렌 (PP),폴리에테르 에테르케톤 (PEEK) ,폴리카보네이트 (PC),폴리에틸렌테레프탈레이트 (PET), 실크 ,유리섬유,탄소섬유,티타늄 ,알루미늄，알루미늄 -마그네슘합금,니켈， 베릴륨등중적어도하나를포함할수있다. 2020/175813 1»（：1^1{2020/001659
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[67] 몇몇실시 예에서,칼럼구조의상부판은수직축상에실질적으로중심을둔 링 형상일수있다.상부판은보이스코일 (240)로부터 떨어진수직축에 실질적으로평행한상부자기장의 적어도일부를지향하도록돕는상부 자석 (215)일수있다.칼럼구조의하부판은수직축상에실질적으로중심을 가질수있다.하부판은보이스코일 (240)로부터 떨어진수직축에 인접한수평 축에실질적으로평행한하부자기장의 적어도일부를지향하도록돕는 하부자석 ( 0)을포함할수있다.하부자석 (210)은예를들어자석 링일수있다. 일부실시 예에서 ,하부프레임 (230)과상부프레임 (235) (예를들면,저탄소강, 연자성강,플라스틱,알루미늄등)을포함하는인클로우저는자기복귀경로의 두배일수있다.일부실시 예에서,피크대피크변위 (270)는전체두께 (275)의 50 %보다클수있다.
[68] 하나이상의실시 예에서,다이어프램 (225)은외부서스펜션 (250) (예를들어, 원환체등)을포함하거나이와연결될수있다.트랜스듀서 (200)는트랜스 듀서 (200)외부의 음파를청취환경으로방사하기 위한슬롯또는배기구 (260)및 내부스피커볼륨으로배기하기위한슬롯또는배기구 (265)를포함할수있다. 일부실시 예에서,칼럼구조의상부및하부판은프레임 (즉,하부프레임 (230) 및상부프레임 (235))의 일부일수있다.
[69] 일부실시 예에서,다이어프램 (225)은홀 (또는공간,개구등) (226)을포함할수 있다.홀 (226)은실질적으로다이어프램 (225)에 대한수직축을중심으로가질수 있다.홀 (226)은수평폭을가질수있다.보이스코일 (240)은홀 (226)내에 적어도부분적으로배치될수있다.보이스코일 (240)은다이어프램 (225)의수직 축에실질적으로중심을둔형상 (예를들어,링 형상,원형 형상,타원형 형상 등)을가질수있다.보이스코일 (240)은외부수평폭및내부수평폭을가질수 있으며,여기서 외부수평폭은홀 (226)의수평폭보다작거나같을수있다. 이 일부실시 예에서,자석시스템은매우얇은폼팩터에서 저주파출력을
생성한다.트랜스듀서 (200)는최대 변위를위해스택 업토늘로지를최적화할수 있다.일부실시 예들에 따르면,인클로저는트랜스듀서 (200)설계의 기능적인 부분이 된다.일부실시 예에서,트랜스듀서 (200)의자석시스템 (또는모터)은 다이어프램 (225)의중심에 위치되고 (전통적인설계에서와같이다이어프램의 아래에 위치하지 않음),증가된운동범위를갖는얇은설계를제공한다.일부 경우에는,자석시스템의프린지 필드를이용하여다이어프램 (225)의운동 범위를증가시키는요크 /갭 (직접자기복귀 경로)이 없다.트랜스듀서 (200)는 또한인/아웃스트로크동안전자기력 및인덕턴스의 대칭성을향상시킨다.일부 실시 예에서,트랜스듀서 (200)는대칭자석 레이아웃을제공하며,이는왜곡을 감소시킴으로써 음질을향상시킨다.
1] 일부실시 예에서,트랜스듀서 (200)는칼럼구조물의 양측에서자기복귀
경로에사용되는스틸하우징 (인클로저에 필요한추가두께 없음)을포함할수 있다.다이어프램 (225)은보이스코일 (240)의중앙에장착될수있으며,이는인/ 아웃스트로크의대칭성을향상시킨다.또한,이것은기존트랜스듀서설계에 사용된포머 (former) (보빈)를줄이거나없앨수있다.또한,트랜스듀서 (200)의 전략적으로배치된배기구 (air bent)는다이어프램 (225)의진동모드를감소시킬 수있으며,이는왜곡및보이스코일 (240)이자석시스템구조에대해마찰될 가능성을감소시킨다.일부실시 예에서,트랜스듀서 (200)는휴대폰,캠코더, PDA (personal digital assistant),디지털카메라,노트북컴퓨터 , TV, DVD등과 같은장치및마이크로전자장비에구현될수있다.
2] 도 2b는일부실시 예에따른예시적인자속 (280)을도시하는예시적인초박형 트랜스듀서 (200)의단면도를도시한다.일부실시 예에서,하부자석 (210)및 상부자석 (215)은극판 (pole plate)의가장자리에서자속 (280)을증가시키기위해 반대극성을갖는다.보이스코일 (240)및자석시스템구조는다이어프램 (225)의 중앙에위치할수있다.자석시스템은구동부내의중앙에위치하고대칭모터 설계는짝수차수고조파왜곡을감소시킬수있다.
3] 도 3은일부실시 예에따른상부슬롯 (260)및하부슬롯 (265)배기구 (venting)를 도시하는예시적인슬롯로딩된초박형트랜스듀서 (200)의단면도를도시한다. 일부실시예에서,트랜스듀서 (200)는상부슬롯 (260)에서곧바로청취환경으로 공기를배출하고,하부슬롯 (265)에서곧바로내부스피커볼륨 (320)으로공기를 배출시킨다.
4] 도 4는일부실시예에따라요동운동을일으키는다이어프램 (225)상에비대칭 압력 (화살표 4W및 411로표시됨)을나타내는예시적인슬롯-로드초박형 트랜스듀서 (200)의단면도를도시한다.트랜스듀서의슬롯로딩에는장점이 있지만얇은트랜스듀서의슬롯로딩은다이어프램의음향로드가
비대칭적이기때문에흔들림이발생하기쉽다.이로인해왜곡이발생하고 보이스코일이자석구조에마찰될수있다.일부실시예에서,
트랜스듀서 (200)는다이어프램 (225)에대한음향로드의비대칭성을
최소화하기위해최적화된배기구조를제공하며,이는다이어프램의음향 로드가비대칭이되어흔들림이발생하기쉽게만드는비교예의평면
트랜스듀서 (예를들어,평면마이크로스피커 (100),도 1)의슬롯로딩과관련된 문제를경감시킬수있다.
5] 트랜스듀서는내부스트로크및외부스트로크에대해대칭적인거동을나타낼 수있다.보이스코일의전자기력,코일인덕턴스및서스펜션강성은나머지 위치에서가능한한대칭적인것이좋다.기존의슬림트랜스듀서디자인은슬림 폼팩터를위해대칭성을희생한다.일부실시예는전자기력및코일
인덕턴스에대해완벽한대칭을가질수있다.
6] 도 5a내지도 5g는일부실시 예에따른다양한기류배출구를갖는예시적인 슬롯-로드초박형트랜스듀서의평면도를도시한것이다.도 5a는종래의 접근법에따른 TV장치 (510)에서의슬롯-로드트랜스듀서 (200)및내부스피커 볼륨 (320)의평면도를도시한다.트랜스듀서 (200)는타원형다이어프램 (520)을 포함한다.트랜스듀서 (200)를내려다보는바와같이,보이스코일 (240)은자석 시스템을둘러싼다.트랜스듀서 (200)는트랜스듀서 (200)의전체전방에걸쳐 상부슬롯 (260)(도 2a,도 2b)으로부터청취환경 (예를들어방등)으로직선으로 공기를배출한다.트랜스듀서 (200)는또한하부슬롯 (265)으로부터내부스피커 볼륨 (320)으로의공기흐름을위해공기를배출한다 (도 2a,도 2b).
7] 도 5b는일부실시 예에따른공기흐름배출을위한측면출구슬롯 (540/541) 및 TV장치 (510)의내부스피커볼륨 (320)을갖는예시적인슬롯로딩된초박형 트랜스듀서 (200)의평면도를도시한것이다.일부실시예에서,슬롯로딩된 트랜스듀서 (200)에대한개선된공기배출은측면출구슬롯 (540및 541)을통해 공기배출을강제하고,이는다이어프램 (225)의비대칭을개선한다 (도 2a,도 2b). 일부실시예에서,트랜스듀서 (200)는다이어프램 (225)에의해나타나는요동의 양을최소화하는상부및하부벽 (및내부스피커볼륨 (320)으로배기하는 슬롯과함께출구슬롯 (530, 531))의최적구성을포함한다.
8] 도 5c는일부실시예에따른전방개방 (front open)기류배출구를갖는
예시적인슬롯-로드초박형트랜스듀서 (200)의평면도를도시한것이다.도 5d는 일부실시예에따라내부스피커볼륨 (320)에대한후방중앙 (rear center and sides)및측면에서공기흐름을갖는슬롯-로드초박형트랜스듀서 (200)의 평면도를도시한다.도 5e는일부실시예에따른청취환경으로의전방
측부 (front sides)기류배출구를갖는예시적인슬롯-로드초박형
트랜스듀서 (200)의평면도를도시한것이다.도 5f는일부실시 예에따라내부 스피커볼륨 (320)으로후방중앙 (rear-center)기류배출구를갖는예시적인 슬롯-로드초박형트랜스듀서 (200)의평면도를도시한것이다.도 5g는일부 실시 예에따른내부스피커볼륨 (320)으로의백사이드 (back-sides)기류 배출구를갖는예시적인슬롯-로드초박형트랜스듀서 (200)의평면도를도시한 것이다.
9] 도 6은일부실시예에따른,도 5a내지도 5g의 예에대해요동운동 (6W)에
대한주파수 (615)의경향성에대한그래프 (600)를도시한것이다.곡선 (620)은 후방-중앙배기구와함께전방측부 (front sides)배기구에대응하고;곡선 (621)은 후방-즉부 (back-sides)및중앙 (center)배기구와함께전방즉부 (front sides) 배기구에대응하고;곡선 (622)은후방-중앙 (back-center)배기구와함께전방 즉부 (front-sides)배기구에대응하고;곡선 (623)은후방-즉부 (back-sides)및 중앙 (center)배기구와함께전방배기구에대응하고;곡선 (624)은후방-측부 (front sides)배기구와함께전방-측부 (back-sides)배기구에대응하고,곡선 (625)은 후방-측부 (back-sides)배기구와함께전방 (front)배기구에대응한다.
그래프 (600)에서볼수있는바와같이,최소한의요동특성은다음의구성에 의해달성된다 (더적은것이더좋다):후방-중앙이개방 (및측부는폐쇄) (도 5f참조)과함께전방이개방 (도 5a참조)된경우 (620),후방-중앙및측부개방 (도 5d참조)과함께전방측부개방 (도 5b참조)된경우 (621). 2020/175813 1»（：1^1{2020/001659
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[8이 도 7은일부실시예에따른,도 내지도 5은의 예에대한음압레벨 1¾(기 0) 대주파수 (기 5)의그래프 (700)를도시한것이다.곡선 (720)은후방측부및중앙 배기구와함께전방배기구에대응하고;곡선 (721)은후방-측부및중앙 배기구와함께전방측부배기구에대응하고;곡선 (722)은후방-중앙배기구와 함께전방측부배기구에대응하고;곡선 (723)은후방-중앙배기구와함께전방 측부배기구에대응하고;곡선 (724)은후방측부배기구와함께전방배기구에 대응하고;곡선 (725)은후방측부배기구와함께전방측부배기구에대응한다. 도시된바와같이，최상의출력은다음과같은구성에의해발생한다 (많은것이 더좋다) :후방중앙및측부배기구 (도 5(1참조)와함께전방배기구 (도 50 참조) (720),및후방중앙및측부배기구 (도 5(1참조)와함께전방측부배기구 (도 ¾참조) (721).
[81] 도 는일부실시예에따른평면다이어프램 (820)을갖는예시적인초박형 트랜스듀서 (800)의단면도를도시한것이다.일부실시예에서,
트랜스듀서 (800)는하부자석 (210),상부자석 (215),중간판 (220),보이스코일 (240),평면다이어프램 (820)및구조 (또는프레임) (830)를포함한다.일부 예시적인실시예에서,구조 (830)는저탄소강,연자성강,플라스틱,알루미늄 등으로구성될수있다.
[82] 도 815는일부실시 예에따른볼록한각형다이어프램 (821)을갖는예시적인 초박형트랜스듀서 (801)의단면도를도시한것이다.일부실시 예에서, 트랜스듀서 (801)는하부자석 (210),상부자석 (215),중간판 (220),보이스코일 (240),볼록한각형다이어프램 (821)및구조 (또는프레임) (830)를포함한다.
[83] 도 는일부실시예에따라오목한각형다이어프램 (822)을갖는예시적인 초박형트랜스듀서 (802)의단면도를도시한다.일부실시예에서,
트랜스듀서 (802)는하부자석 (210),상부자석 (215),중간판 (220),보이스코일 (240),오목한각형다이어프램 (822)및구조 (또는프레임) (830)를포함한다.
[84] 도 8(1는일부실시 예에따른평면다이어프램 (820)및외부서스펜션 (예를 들어,원환체 ( )등) (840)을갖는예시적인초박형트랜스듀서 (803)의 단면도를도시한것이다.일부실시예에서,트랜스듀서 (803)는하부자석 (210), 상부자석 (215),중간판 (220),보이스코일 (240),평면다이어프램 (820),외부 서스펜션 (840)및구조 (또는프레임) (830)를포함한다.
[85] 도 86는일부실시예에따른,구조적다이어프램 (850)및외부서스펜션
(840)을갖는예시적인초박형트랜스듀서 (804)의단면도를도시한것이다.일부 실시 예에서,트랜스듀서 (804)는하부자석 (210),상부자석 (215),중간판 (220), 보이스코일 (240),구조적다이어프램 (850),외부서스펜션 (840)및구조 (또는 프레임) (830)를포함한다.일부실시예에서,구조적다이어프램 (850)은구조용 발포재 (&^1고)등으로만들수있다.
[86] 도 8는일부실시예에따른,대체형상 (企 切 shaped)의보이스코일 (241), 구조적다이어프램 (850)및외부서스펜션 (840)을갖는예시적인초박형 트랜스듀서 (805)의단면도를도시한것이다.일부실시예에서,
트랜스듀서 (805)는하부자석 (210),상부자석 (215),중간판 (220),보이스코일 (241),구조적다이어프램 (850),외부서스펜션 (840)및구조 (또는프레임)
(830)를포함한다.일부실시예에서보이스코일 (240)은형상이비대칭또는 반대칭 (semi-asymmetric)일수있다는점 (예를들어,치수감소,각도,두께변경, 폭 /높이변경등)에서보이스코일 (240) (도 2a)과는다른전체형상을갖는다).
[87] 도 8g는일부실시 예에따른다른대안적인형상의보이스코일 (242),구조적 다이어프램 (850)및외부서스펜션 (840)을갖는예시적인초박형
트랜스듀서 (806)의단면도를도시한것이다.일부실시예에서,
트랜스듀서 (806)는하부자석 (210),상부자석 (215),중간판 (220),보이스 코일 (241),구조적다이어프램 (850),외부서스펜션 (840)및구조 (또는프레임) (830)를포함한다.일부실시예에서보이스코일 (242)은형상이다른비대칭 형상또는반비대칭 (semi-asymmetric) (예를들어,치수감소,기울어지거나,두께 변경,폭변경/높이변경등)일수있다는점에서보이스코일 (240)(도 2a)및 보이스코일 (241)(도 8f)과는상이한전체형상을갖는다.
[88] 도 8h는일부실시 예에따른평면다이어프램 (820)및내부서스펜션 (860)을 갖는다른예시적인초박형트랜스듀서 (807)의단면도를도시한다.일부실시 예에서,트랜스듀서 (807)는하부자석 (210),상부자석 (215),중간판 (220), 보이스코일 (240),다이어프램 (820),내부서스펜션 (860)및구조 (또는프레임) (830)를포함한다.일부실시예에서,내부서스펜션 (860)은발포제서스펜션, 폴리폼서스펜션등일수있다.
[89] 도 8i는일부실시 예에따라슬롯방사를위해구성된평면다이어프램 (820), 상부판 (865)및후면판 (866)을갖는예시적인초박형트랜스듀서 (808)의 단면도를도시한다.일부실시 예에서,트랜스듀서 (808)는하부자석 (210),상부 자석 (215),중간판 (220),보이스코일 (240),다이어프램 (820),상부판 (865)및 후면판 (866)을포함한다.일부실시예에서,슬롯또는배기구 (260)는음파를 청취환경 (예를들어,방등)으로방출하고,슬롯또는배기구 (265)는스피커 볼륨으로내부적으로음파를방사한다.일부실시 예에서,상부판 (865)및후면 판 (866)은저탄소강,연자성강등으로제조될수있다.
[9이 도 8j는일부실시 예에따른평면다이어프램 (820)및자성유체
씨일 (seal)(841)을갖는예시적인초박형트랜스듀서 (809)의단면도를도시한다. 일부실시예에서,트랜스듀서 (809)는하부자석 (210),상부자석 (215),중간 판 (220),보이스코일 (240),다이어프램 (820),자성유체씨일 (841)및구조 (또는 프레임) (830)를포함한다.자성유체씨일 (841)은트랜스듀서 (809)의자석 시스템의인가된자계에대한자계의응답을이용한다.자성유체는액체 0-링으로서기능할수있다.자성유체씨일 (841)은트랜스듀서 (809)가개선된 오디오응답및개선된전력핸들링 (power handling)과함께보다효율적으로 기능할수있게한다.오디오자성유체는합성탄화수소와에스테르의두가지 2020/175813 1»（：1^1{2020/001659
11 종류의운반체액체를기초로한다.두오일모두휘발성과열안정성이매우 낮다.포화자화 (모든도메인이정렬될때단위체적당자기모멘트의최대값)는 부유자성재료의특성및재료의체적하중에의해결정된다.밀도및점도와 같은물리적및화학적특성은운반체액체의물리적및화학적특성들에 밀접하게대응된다.
[91] 도 8노는일부실시 예에따른평면다이어프램 (820)및윤활유씨일 (842)을
갖는예시적인초박형트랜스듀서 ( 0)의단면도를도시한다.일부실시예에서, 트랜스듀서 (810)는하부자석 (210),상부자석 (215),중간판 (220),보이스코일 (240),다이어프램 (820),윤활유씨일 (842)및구조 (또는프레임) (830)를
포함한다.일부실시예에서,윤활유씨일 (842)은실리콘을포함하는윤활유씨일 컴파운드등과같은윤활유씨일링컴파운드유형일수있다.
[92] 도 81은일부실시 예에따른평면다이어프램 (820),상부판 (8기)및후면
판 (870)을갖는다른예시적인초박형트랜스듀서 (811)의단면도를도시한다. 일부실시예에서,트랜스듀서 (811)는하부자석 ( 0),상부자석 (215),중간 판 (220),보이스코일 (240),다이어프램 (820),상부판 (8기),후면판 (870)및구조 (또는프레임) (830)를포함한다.일부실시 예에서상부판 (8기)및후면판 (870)은 저탄소강,연질탄소강등으로제조될수있다.일부실시 예에서,후면 판 (870)은구조 (또는프레임) (830)와별도로형성되거나일체로형성될수 있다.
[93] 도 8111은일부실시 예에따라,평면다이어프램 (820),천공된상부판
(871/872/873)및천공된후면판 (870/874)을갖는예시적인초박형
트랜스듀서 (812)의단면도를도시한다.일부실시 예에서,트랜스듀서 (812)는 하부자석 (210),상부자석 (215),중간판 (220),보이스코일 (240),
다이어프램 (820),상부판 (8기/ 872/873)(도 13참조),후면판 (870/874)을
포함한다.일부실시예에서,상부판 (8기/ 872/873)및후면판 (870/874)은저탄소 강,연질의자성강등으로만들어질수있으며,상부판및후면판 (873, 874)의 일부분은사운드가청취환경및스피커인클로저로방출되도록천공되며,상부 판및후면판 (870, 8기)의다른부분은보이스코일 (240)근처의플럭스를 최대화하기위해단단할수있다.초박막트랜스듀서 (812)는사운드의직접적인 방사 (슬롯방사와반대로)를위해도시되어있지만,일부실시예는슬롯방사와 직접방사의조합을포함할수있다.
[94] 도 은일부실시 예에따라슬롯방사를위해구성된평면다이어프램 (820)을 갖는예시적인초박형트랜스듀서 (813)의단면도를도시한다.일부실시예에서, 트랜스듀서 (813)는하부자석 (210),상부자석 (215),중간판 (220),보이스 코일 (240),다이어프램 (820)및프레임 (880)을포함한다.일부실시예에서,슬롯 또는배기구 (260)는음파를청취환경 (예를들어,방등)으로방출하고,슬롯또는 배기구 (265)는스피커볼륨으로내부적으로음파를방사한다.일부실시예에서, 프레임 (880)은저탄소강,연성자성강,플라스틱,알루미늄등으로만들어질수 2020/175813 1»（：1^1{2020/001659
12 있다.
[95] 도 80는일부실시 예에따라,평면다이어프램 (820),상부판 (8기)및후면
판 (870)을갖는예시적인초박형트랜스듀서 (814)의단면도를도시한다.일부 실시 예에서,트랜스듀서 (814)는하부자석 (210),상부자석 (215),중간판 (220), 보이스코일 (240),다이어프램 (820),후면판 (870),상부판 (8기)및구조 (또는 프레임) (811)를포함한다.슬롯또는배기구 (260)는음파를청취환경 (예를 들어,방등)으로방사하고,슬롯또는배기구 (265)는스피커볼륨내부로음파를 방사한다.일부실시예에서,프레임 (881)은저탄소강,연성자성강,플라스틱, 알루미늄등으로제조될수있다.일부실시 예에서,후면판 (870)및상부 판 (8기)은구조 (또는프레임) (881)와별도로형성되거나일체로형성될수있다.
[96] 도 는슬롯방사를위해구성된평면다이어프램을갖는예시적인전통적인 트랜스듀서 (900)의단면도를도시한다.트랜스듀서 (900)는폭 (920)이 1111111인 상부부분,폭 (930)이 2!·이고,폭 (940)이 6111111인연결부분,및폭 (950)이 11피11 인하부부분을갖는프레임 (이 0)을포함한다.
Figure imgf000013_0001
트랜스듀서 (900)는 2111111피크변위를갖는다.
[97] 도 %는일부실시 예에따라슬롯방사를위해구성된평면다이어프램을갖는 예시적인초박형트랜스듀서 (950)의단면도를도시한다.트랜스듀서 (950)는 보이스코일 (960)(예를들어,보이스코일 (240)과유사,도 2幻,폭 (921)이 1111111인 상부부분,폭 (931)이 2^이고,폭 (941)이 4111111인연결부및폭 (951)이 1111111인 하부부분을가지는프레임 (970)및내부서스팬션 (980)(예를들어,내부 서스펜션 (860)과유사,도 8¾을포함한다.총두께는 8111111이고트랜스
듀서 (950)는 2111111피크변위를갖는다.트랜스듀서 (950)는트랜스듀서 (900)보다 20 % (즉, 2 111111)더작은총두께를갖는다.
[98] 도 1 는직접방사를위해위해구성된평면다이어프램을갖는예시적인
전통적인트랜스듀서 (1000)의단면도를도시한다.트랜스듀서 (1000)는 1111111의 피크변위 (1020), 1111111의폭 (1025)을갖는상부부분, 2111111의폭 (1030)을갖는 연결부분및 1111111의폭 (1035)을갖는하부부분 (1010)을갖는다.총두께는 5111111이다.
[99] 도 1아5는일부실시 예에따라직접방사를위해구성된평면다이어프램을
갖는예시적인초박형트랜스듀서 (1050)의단면도를도시한다.
트랜스듀서 (1050)는폭 (1026)이 10111111인상부부분,폭 (1031)이 2111111인연결 부분과폭 (1036)이 1_인하부부분과함께보이스코일 (1060) (예를들어 , 보이스코일 (240)과유사,도 2&),내부서스펜션 (1080)(내부서스펜션 (860)과 유사,도 8¾을포함한다.트랜스듀서 (1050)의총두께는 4 111111이고피크변위는 1 111111이다.트랜스듀서 (1050)는트랜스듀서 (1000)보다 20 % (즉, 2 111111)더작은총 두께를갖는다.
[10이 도 1 는일부실시예에따라단락을방지하기위해내부서라운드 (1120)를 갖는예시적인초박형트랜스듀서 ( 00)의단면도를도시한다.다이어프램이 2020/175813 1»（：1^1{2020/001659
13 앞으로움직일때,다이어프램은앞쪽의공기를압축하는반면반대쪽끝에서는 매질이희박하다.이것은 180 12의위상차를만든다.낮은주파수에서,
다이어프램은공기가한쪽에서다른쪽으로이동하도록천천히움직이고,압력 차의균형을맞춘다.이로인해저주파수공기흐름이생성되지만소리는들리지 않는다 (음향단락).일부실시예들에서,내부서라운드 (1120)의추가는음향 단락이발생하는것을방지하는것을돕는다.내부서라운드 (1120)는 ¾ 1,고무 등으로만들어질수있다.
[101] 도 1내는일부실시 예에따라음향단락을방지하기위해압축성재료 (1130)를 갖는예시적인초박형트랜스듀서 ( 01)의단면도를도시한다.일실시예에서, 압축성재료 (1130)는압축성발포제또는유사한재료일수있다.일부실시 예에서,압축성재료 (1130)의추가는음향단락이발생하는것을방지하는것을 돕는다.
[102] 도 1 는일부실시예에따른자성유체씨일 (841) (도 ¾참조)을갖는
예시적인초박형트랜스듀서 ( 02)의단면도를도시한다.일부실시 예에서, 자성유체씨일 (841)의추가는음향단락이발생하는것을방지하는데도움이 되고또한요동경향을감소시킬수있다.
[103] 도 12&는일부실시예에따른상부판 (1220)을갖는예시적인초박형
트랜스듀서 (1200)의상부사시도를도시한다.트랜스듀서 (1220)는
트랜스듀서 (1200)를지지하고장착하기위한프레임 (1210)을포함한다.일부 실시 예에따르면,도 1¾는상부판 (1220)이제거된상태에서도 12&의예시적인 초박형트랜스듀서 (1200)의상면사시도를도시한다.도시된바와같이, 트랜스듀서 (1200)는상부자석 (215),보이스코일 (240)및다이어프램 (1230) (예를들어,다이어프램 (520),도 와유사)을포함하는자석시스템을포함한다. 일부실시예에따르면,도 1 는도 12^15의예시적인초박형트랜스듀서 (1200)의 단면도를도시한다.
[104] 도 13은일부실시 예에따른천공된상부판 (1310)을갖는예시적인초박형 트랜스듀서 (1300)의단면도를도시한다.일부실시 예에서,트랜스듀서 (1300)는 자석시스템 (도 참조),보이스코일 (240)및다이어프램 (1320)을포함한다. 일부실시예에서,음파는상부판 (1310)의천공을통해방출된다.
다이어프램 (1320)은원형또는타원형을갖는다.
[105] 도 14는일부실시 예에따른타원형다이어프램 (1410)을갖는다른예시적인 초박형트랜스듀서 (1400)의평면도를도시한다.상이한크기의원형형상, 타원형형상등과같은다양한다이어프램형상이사용될수있음에유의해야 한다.
[106] 청구범위에서단수의요소에대한언급은명시적으로언급되지않는한
"하나만”을의미하는것이아니라 "하나이상”을의미하는것으로의도된다. 현재알려진또는이후의당업자에게공지된상기설명된예시적실시예의 요소들의모든구조적및기능적등가물은본청구범위에의해포함되는것으로 2020/175813 1»（：1^1{2020/001659
14 의도된다.요소가 "수단”또는 "단계”라는문구를사용하여명시적으로언급되지 않는한,여기의청구요소는
Figure imgf000015_0001
112,여섯번째패러그랩에 따라해석되지않는다.
[107] 본명세서에서사용된용어는특정실시 예만을설명하기위한것이며본
발명을제한하려는것은아니다.단수의표현은문맥상명백하게다르게뜻하지 않는한,복수의표현을포함한다.본명세서에서사용될때 "포함한다”및 /또는 "포함하는”이라는용어는언급된특징,정수,단계,연산,요소및 /또는구성 요소의존재를명시하지만,하나이상의다른특징,정수,단계,연산,요소,구성 요소및 /또는이들의그룹의추가의존재나추가를배제하지않는다는것을 이해할것이다.
[108] 상응하는구조,재료,작용및모든수단또는이하의청구단계플러스기능 소자의등가물은임의의구조,재료를포함하거나,특히항과같은다른항 소자와조합하여기능을수행하는역할을하도록의도된다.실시 예들의설명은 예시및설명의목적으로제시되었지만,개시된형태의실시 예들로완전하거나 제한되도록의도되지않는다.본발명의범위및사상을벗어나지않고많은 수정및변형이당업자에게명백할것이다.
[109] 비록실시 예들이이들특정버전을참조하여설명되었지만,그러나다른
버전도가능하다.따라서,첨부된청구범위의사상및범위는본명세서에 포함된바람직한버전의설명으로제한되어서는안된다.

Claims

() 2020/175813 1»(：1/10公020/001659 15 청구범위
[청구항 1] 트랜스듀서를포함하는스피커에 있어서,
상기트랜스듀서는
제 1수평폭을가지는홀을포함하는다이어프램;
상기홀내에적어도부분적으로배치된보이스코일;및 상기보이스코일내에적어도부분적으로배치된칼럼구조;를포함하는 스피커.
[청구항 2] 제 1항에 있어서,
상기보이스코일은링형상을가지고,상기링형상은외부수평폭및 내부수평폭을가지며,상기외부수평폭은상기홀의제 1수평폭과 동일하거나작은스피커 .
[청구항 3] 제 1항에 있어서,
상기보이스코일은링형상을가지고,상기링형상은외부수평폭및 내부수평폭을가지며,상기칼럼구조는상기링형상의내부수평폭과 동일하거나작은제 2수평폭을가지는스피커 .
[청구항 4] 제 1항에 있어서,상기칼럼구조는,
상부자석 ;
상기상부자석아래에배치된중간판;및
상기중간판아래에배치된하부자석을포함하는스피커.
[청구항 5] 제 4항에 있어서,
상기상부자석은상기보이스코일에상부자기장을인가하도록 구성되며 ;
상기하부자석은상기보이스코일에하부자기장을인가하도록 구성되며 ;
상기중간판은상기보이스코일을향해상기상부자기장또는하부 자기장중적어도하나를안내하도록구성된스피커 .
[청구항 6] 제 4항에 있어서,
상기상부자석위에상부판을더포함하고,상기상부판은상부 자기장의적어도일부를보이스코일쪽으로지향시키는것을 보조하도록구성된스피커 .
[청구항 7] 제 4항에 있어서,
상기하부자석아래에하부판을더포함하고,상기하부판은상기하부 자기장의적어도일부를보이스코일쪽으로지향시키는것을 보조하도록구성된스피커 .
[청구항 8] 제 4항에 있어서,
상기상부자석과하부자석은네오디뮴 (1 0(1)011111111)을포함하고;
상기중간판은저탄소강을포함하는스피커 . 2020/175813 1»（：1^1{2020/001659
16
［청구항 9］ 제 4항에있어서,
상기홀은그중심에상기다이어프램에대한수직축을가지고, 상기상부자석위에배치되고상기수직축에중심을둔상부판을더 포함하고,상기상부판은상부자기장의적어도일부를상기보이스코일 쪽으로지향시키는것을보조하도록구성되고;
상기하부자석아래에배치되고,상기수직축에중심을둔하부판을더 포함하고,상기하부판은상기보이스코일쪽으로하부자기장의적어도 일부를지향시키는것을보조하도록구성된스피커.
［청구항 1이 제 1항에있어서,
상기다이어프램에부착된서스펜션을더포함하고,상기서스펜션은 내부서스펜션또는외부서스펜션중적어도하나를포함하는스피커. ［청구항 11］ 제 1항에있어서,
상기보이스코일및칼럼구조사이에배치되는윤활유를더포함하는 스피커.
［청구항 12］ 제 11항에있어서,
상기윤활제가자성유체또는윤활유중적어도하나를포함하는 스피커.
［청구항 13］ 제 1항에있어서,
상기다이어프램은구조적발포제를포함하는스피커.
［청구항 14］ 제 1항에있어서,
상기홀은그중심에상기다이어프램에대한수직축을가지고,상기링 형상은상기수직축을중심으로하는스피커 .
［청구항 15］ 제나항에있어서,
상기칼럼구조는상기수직죽에중심을둔스피커.
PCT/KR2020/001659 2019-02-28 2020-02-05 초박형 트랜스듀서를 포함하는 스피커 Ceased WO2020175813A1 (ko)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP20763909.7A EP3876553B1 (en) 2019-02-28 2020-02-05 Speaker including ultra-thin transducer

Applications Claiming Priority (6)

Application Number Priority Date Filing Date Title
US201962811781P 2019-02-28 2019-02-28
US62/811,781 2019-02-28
US16/588,905 2019-09-30
US16/588,905 US11102585B2 (en) 2019-02-28 2019-09-30 Ultra slim transducer
KR10-2020-0010483 2020-01-29
KR1020200010483A KR102927641B1 (ko) 2019-02-28 2020-01-29 초박형 트랜스듀서를 포함하는 스피커

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WO2020175813A1 true WO2020175813A1 (ko) 2020-09-03

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Country Status (2)

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US20070125591A1 (en) * 1998-11-30 2007-06-07 Sahyoun Joseph Y Audio speaker with wobble free voice coil movement
JP2009044357A (ja) * 2007-08-07 2009-02-26 Onkyo Corp スピーカー用磁気回路およびこれを用いた動電型スピーカー
KR20110038883A (ko) * 2009-10-09 2011-04-15 에스텍 주식회사 스피커

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JPS6028400A (ja) * 1983-07-26 1985-02-13 Sony Corp ダイナミツク形スピ−カ
DE4317775C2 (de) * 1993-02-03 1995-02-02 Foster Electric Co Ltd Lautsprecher
JP4081842B2 (ja) * 1998-03-11 2008-04-30 ソニー株式会社 スピーカ装置
EP1434463A3 (en) * 2002-12-27 2008-11-26 Panasonic Corporation Electroacoustic transducer and electronic apparatus with such a transducer
JP5816811B2 (ja) * 2011-05-18 2015-11-18 パナソニックＩｐマネジメント株式会社 スピーカシステムおよびこれを用いた電子機器、移動体装置

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JP2000059884A (ja) * 1998-08-05 2000-02-25 Foster Electric Co Ltd スリムスピーカ
US20070125591A1 (en) * 1998-11-30 2007-06-07 Sahyoun Joseph Y Audio speaker with wobble free voice coil movement
JP2005223806A (ja) * 2004-02-09 2005-08-18 Pioneer Electronic Corp 振動板、その製造方法、および、スピーカ装置
JP2009044357A (ja) * 2007-08-07 2009-02-26 Onkyo Corp スピーカー用磁気回路およびこれを用いた動電型スピーカー
KR20110038883A (ko) * 2009-10-09 2011-04-15 에스텍 주식회사 스피커

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EP3876553A4 (en) 2022-01-12
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