WO2011010754A1 - Film vocal ayant des bobines fixées dans un type à motif, son procédé de fabrication et haut-parleur de type plat le comprenant - Google Patents

Film vocal ayant des bobines fixées dans un type à motif, son procédé de fabrication et haut-parleur de type plat le comprenant Download PDF

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Publication number
WO2011010754A1
WO2011010754A1 PCT/KR2009/004010 KR2009004010W WO2011010754A1 WO 2011010754 A1 WO2011010754 A1 WO 2011010754A1 KR 2009004010 W KR2009004010 W KR 2009004010W WO 2011010754 A1 WO2011010754 A1 WO 2011010754A1
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WO
WIPO (PCT)
Prior art keywords
base
coil pattern
coil
pattern
voice
Prior art date
Application number
PCT/KR2009/004010
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English (en)
Korean (ko)
Inventor
김상록
Original Assignee
주식회사 플랫코어사운드
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.)
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Publication date
Application filed by 주식회사 플랫코어사운드 filed Critical 주식회사 플랫코어사운드
Priority to PCT/KR2009/004010 priority Critical patent/WO2011010754A1/fr
Publication of WO2011010754A1 publication Critical patent/WO2011010754A1/fr

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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
    • H04R31/00—Apparatus or processes specially adapted for the manufacture of transducers or diaphragms therefor

Definitions

  • the present invention relates to a flat panel speaker, and more particularly, to a voice film, a manufacturing method thereof, and a flat panel speaker having the same.
  • a speaker is a device that converts an electrical signal into a voice signal.
  • Such a speaker has a voice coil and a diaphragm largely interposed between magnets, and is configured to generate sound by vibrating the diaphragm by the movement of the voice coil.
  • Such voice coils include a circular voice coil and a straight voice coil.
  • the circular voice coil is a voice coil used in a general circular speaker, and is circularly wound around the center of the coil base. Since the circular voice coil is not provided with the voice coil at the edge of the coil base, it is difficult to vibrate the diaphragm in a balanced manner.
  • the linear voice coil 10 is wound in an elliptic shape on both sides of a plate-shaped coil base 20. Since the straight voice coil 10 is wound over most of the coil base 20 having a predetermined area, the sound reproducing efficiency is better than that of the circular voice coil.
  • the linear voice coil 10 is wound around most of the region of the coil base 20 as described above, when the coil base 20 is microminiature or large, it has a constant tension and is wound at a uniform interval. It is difficult. In addition, since the difference in the tension of the voice coil 10 causes a resistance difference between the internal coils (not shown), it becomes an inhibitory factor for generating a uniform sound.
  • the general speaker is known that the lighter the weight of the voice coil and the diaphragm, which is a vibration medium, the less power required for vibration, thereby improving speaker efficiency.
  • the weight per length of the voice coil 20 is fixed, so that Under the size (or size), it is not easy to reduce the weight of the voice coil 20.
  • the linear voice coil member 30 has a thickness of about 0.3 mm or more.
  • the linear voice film 30 is interposed between a pair of magnets (not shown), and must maintain a certain distance from each magnet.
  • the thickness of the linear voice coil member 30 is increased, the distance between the coil base 20 and the magnet is naturally increased.
  • the distance between the magnets increases, so that the strength of the magnetic field lines decreases.
  • the force required for vibration is reduced, thereby reducing the speaker efficiency.
  • an object of the present invention is to provide a voice film having a thickness of a thin film and having a coil attached in a pattern form.
  • Another object of the present invention is to provide a method for producing a voice film capable of forming voice coils at uniform intervals.
  • Still another object of the present invention is to provide a speaker having a voice film having a thickness of a thin film and having coils formed at uniform intervals.
  • the voice film of the present invention comprises a base having a first surface and a corresponding second surface thereof, a first coil printed in a continuous track form on the first surface of the base. A pattern, and a second coil pattern printed in the form of a continuous track on the second surface of the base.
  • the manufacturing method of the voice film according to another embodiment of the present invention is as follows. First, a base having a first surface and a second surface opposite thereto is prepared, and then a first coil pattern is printed on the first surface of the base, and a second coil pattern is printed on the second surface of the base. do.
  • the printing of the first coil pattern or the second coil pattern may include forming a conductive film on the first surface or the second surface of the base; And patterning the conductive film by a photolithography process and a mask pattern obtained thereby to form a first coil pattern or a second coil pattern.
  • the printing of the first coil pattern or the second coil pattern may be performed at a predetermined interval on the first surface or the second surface of the base.
  • the method may include forming the second coil pattern.
  • first and second coil patterns are formed of a copper metal film
  • printing the first coil pattern or the second coil pattern may be performed at predetermined intervals on the first surface or the second surface of the base.
  • Forming a groove portion having a predetermined depth forming a conductive film on the first surface or the second surface of the base on which the groove portion is formed, such that the groove portion is embedded, and the first surface or the second surface of the base And planarizing the conductive layer to expose the conductive layer to form the first or second coil pattern.
  • the flat-panel speaker according to another embodiment of the present invention is interposed between a pair of magnetic bodies, and the pair of magnetic bodies spaced at regular intervals to generate a vibration when the magnetic force is generated between the magnetic bodies, And a voice film having a coil pattern in the form of a spiral track printed on each of the surfaces facing the sieve.
  • voice films imparting vibration to the diaphragm of the speaker are manufactured in a pattern form through a printing technique using a photolithography process used in semiconductor manufacturing.
  • the voice coils can be produced with a line width in the range of several micrometers to several nm comparable to the CD (critical dimension) of the semiconductor circuit pattern, and the weight (thickness) of the voice film can be reduced as well as weight. Therefore, the vibration of the voice film becomes easier, and the sound generating efficiency of the speaker is improved.
  • the known photolithography process is excellent in reproducibility, it is possible to produce a voice coil with a uniform line width of the desired shape, the resistance is uniform, it is possible to generate a uniform sound.
  • FIG. 1 is a perspective view showing a general straight voice coil
  • FIG. 2 is a cross-sectional view showing a flat panel speaker according to an embodiment of the present invention.
  • FIG. 3 is a cross-sectional view of a voice film according to an embodiment of the present invention.
  • FIG. 4 is a plan view of a voice film according to an embodiment of the present invention.
  • FIG. 5 is a plan view of a voice film according to an embodiment of the present invention.
  • FIG. 6 is a cross-sectional view of a voice film according to another embodiment of the present invention.
  • FIG. 7 is a cross-sectional view for explaining a method of manufacturing a voice film according to an embodiment of the present invention.
  • FIG. 8 is a cross-sectional view illustrating a method of manufacturing a voice film according to an embodiment of the present invention.
  • FIG. 9 is a cross-sectional view illustrating a method of manufacturing a voice film according to an embodiment of the present invention.
  • FIG. 10 is a cross-sectional view for explaining a method of manufacturing a voice film according to another embodiment of the present invention.
  • FIG. 11 is a cross-sectional view for explaining a method of manufacturing a voice film according to another embodiment of the present invention.
  • FIG. 12 is a cross-sectional view of a voice film according to another embodiment of the present invention.
  • FIG. 13 is a cross-sectional view for explaining a method of manufacturing a voice film according to another embodiment of the present invention.
  • FIG. 14 is a cross-sectional view for explaining a method for manufacturing a voice film according to another embodiment of the present invention.
  • FIG. 15 is a cross-sectional view for explaining a method of manufacturing a voice film according to another embodiment of the present invention.
  • 16 is a cross-sectional view of a voice film according to another embodiment of the present invention.
  • first coil pattern 160 second coil pattern
  • 180a, 180b Protective film 200a, 200b: Magnetic body
  • a speaker for example, a flat panel speaker, has a voice coil interposed between a pair of magnetic bodies 200a and 200b spaced apart from each other and a pair of magnetic bodies 200a and 200b at predetermined intervals. It may include a voice film 100 having a.
  • the pair of opposing magnetic bodies 200a and 200b may each have the same configuration, for example, a permanent magnet 210, an upper yoke 220 located on the upper surface of the permanent magnet 210, and a permanent member.
  • the lower yoke 230 may be positioned on the lower surface of the magnet 210.
  • the permanent magnets 210 provided in the magnetic bodies 200a and 200b facing each other may have opposite polarities so that the attraction force can act on each other.
  • the voice film 100 may maintain the same distance as the magnetic bodies (200a, 200b) on both sides to receive the same magnetic force from the magnetic bodies (200a, 200b) on both sides.
  • the voice film 100 may be formed of the base 110 and the coil patterns 120 and 160, as shown in FIGS. 3 to 5.
  • the base 110 is a plate, for example a rectangular plate, having a first surface 110a and a second surface 110b.
  • the base 110 may be formed of an insulating material such as a material having high heat resistance, for example, a polyimide material, and may have a thickness of 20 to 100 ⁇ m.
  • the base 110 may or may not be flexible.
  • the coil patterns 120 and 160 are first coil patterns 120 formed on the first surface 110a of the base 110 and second coil patterns 160 formed on the second surface 110b of the base 110. Can be configured. Each of the first and second coil patterns 120 and 160 may be arranged in a spiral track shape on the first surface 110a and the second surface 110b of the base 110, as shown in FIG. 4, or As shown in FIG. 5, they may be arranged in the form of a rectangular track. That is, each of the first and second coil patterns 120 and 160 may be composed of a plurality of straight patterns and a plurality of curved patterns that are not disconnected.
  • the first and second coil patterns 120 may be formed of a material and a base constituting the first and second coil patterns 120 without a separate adhesive between the surfaces 110a and 110b of the base 110. 110) It is adhered to the surface of the base 110 by the physical and chemical properties between the materials.
  • the first and second coil patterns 120 and 160 may be made of a material having excellent conductivity and durability, and may be formed to a thickness of about 10 to
  • Each of the linear patterns constituting the first and second coil patterns 120 and 160 may be spaced apart from each other at regular intervals.
  • the linear portions of the first coil pattern 120 may be disposed between the linear portions of the second coil pattern 160 to improve the magnetic force, or as shown in FIG. 6, the first coil
  • the straight portions of the pattern 120 and the straight portions of the second coil pattern 160 may be arranged to overlap each other.
  • each of the linear patterns and the curved patterns constituting the first and second coil patterns 120 and 160 may be formed with a uniform line width, or a coil pattern formed on another surface even if the coil pattern is formed on the same surface. They may be formed with different line widths on the line maintaining symmetry with. In this case, the line widths of the coil patterns may be varied in consideration of the area of the base 110 and the magnetic forces of the magnetic bodies 200a and 200b.
  • Such a voice film 100 can be produced in the following manner.
  • a conductive film 115 having a thickness of 10 to 100 ⁇ m is coated on the first surface 110a of the base 110.
  • a mask material for example, a photoresist film 130 is formed on the conductive film 115.
  • a mask (or reticle) 140 is disposed on the base 110 on which the photoresist film 130 is formed.
  • the mask 140 may be composed of, for example, a substrate 142 transparent to light and an opaque pattern 144 formed on opposite surfaces of the base 110. In this case, the opaque pattern 144 may have a form of a predetermined voice coil or a form in which it is reduced.
  • the photoresist film 130 is exposed using the mask 140.
  • the exposed photoresist film 130 is developed to remove the exposed photoresist film 130, thereby forming a photoresist pattern 135.
  • the conductive film 115 is patterned in the form of the photoresist pattern 135 to form the first coil pattern 120 on the first surface 110a of the base 110.
  • the first coil pattern 120 may be formed by an electron beam lithography method as well as the photolithography method as described above.
  • the second surface 110b of the base 110 is turned upside down, and then the conductive film 150 is deposited in the same manner as the formation of the first coil pattern 120.
  • the photoresist pattern 170 is formed in a known manner to form the second coil pattern 160 as illustrated in FIG. 3.
  • the base 110 may be formed.
  • a sacrificial pattern 113 is formed on the first surface 110a.
  • the sacrificial pattern 113 may be formed of a material that is easy to remove, and the sacrificial patterns 113 may be formed to be spaced apart by a predetermined line width of a coil pattern to be formed later.
  • An etch resistant metal film 114 such as copper is formed on the first surface 110a of the base 110 on which the sacrificial pattern 113 is formed.
  • the first coil pattern 120 is formed by removing the sacrificial pattern 113 and leaving the etch-resistant metal film 114 between the sacrificial patterns 113.
  • the etch-resistant metal film 114 may be planarized to expose the surface of the sacrificial pattern 113.
  • lithography techniques used in semiconductor manufacturing processes can uniformly form patterns with very fine line widths (eg, ⁇ m to nm). Therefore, by using a lithography printing technique capable of reproducibly producing very fine linewidth patterns, voice coils can be produced at uniform linewidths and even intervals. Moreover, such a printing technique does not require a separate tension to form a pattern, thereby eliminating the nonuniformity of resistance.
  • the coil patterns 120a and 160a of the voice film 100 of the present invention may be formed to be embedded in the base 100, as shown in FIG. 12. That is, the first coil pattern 120a formed on the first surface 110a of the base 110 is formed to be positioned on the same surface as the first surface 110a of the base 110, and the second coil pattern ( 160a may be formed to be on the same surface as the second surface 120a of the base 110.
  • the voice film of such a structure can be produced in the following manner.
  • a plurality of grooves G are formed on the first surface 110a of the base member 110 through a known lithography method.
  • the groove G is formed to have a line width of about a predetermined width of the first coil pattern and a depth of about a thickness of the predetermined first coil pattern.
  • the grooves G are spaced apart by an interval between the predetermined first coil patterns.
  • the conductive film 114 is formed on the first surface 110a of the base 110 so that the groove G is filled.
  • the conductive layer 114 is planarized to expose the first surface 110a of the base 110 to form the first coil pattern 120a.
  • the base coil 110 on which the first coil pattern 120a is formed may be flipped to form the second coil pattern 160a through the same process as described above.
  • the protective films 180a and 180b may be further formed on both surfaces of the voice film 100.
  • the protective films 180a and 180b may be made of a material having low magnetic force loss, for example, polyimide, without reacting with the coil patterns 120 and 160. As such, by forming the protective films 180a and 180b on the coil patterns 120 and 160, the coil patterns 120 and 160 may be protected from an external element.
  • the voice film 100 of the present invention forms coil patterns on both surfaces of the base 110 through a printing technique using a photolithography process. Since the printing technique using the photolithography technique used for manufacturing the semiconductor provides a uniform coil pattern on the base, the speaker can generate uniform sound by the voice film having such a voice coil pattern. Furthermore, since the voice coil pattern of the present invention is not wound by an apparatus or the like and is produced by being printed by a printing method, a tension difference between voice coil patterns does not occur.
  • the voice film of the present invention is formed through a photolithography technique capable of controlling a line width of several ⁇ m to nm
  • voice coils can be formed with a line width (diameter) of several ⁇ m to nm. Accordingly, the height (ie, thickness) of the voice coil is reduced, so that the width of the voice film is reduced. Accordingly, the distance between the magnetic bodies 200a and 200b disposed on both sides of the voice film 100 can be reduced, thereby making it possible to manufacture a micro speaker, as well as narrowing the interval between the magnetic body and the voice film.
  • the line width between voice coils the number of turns can be increased, and a high magnetic force can be ensured, thereby improving speaker efficiency.
  • the weight of the entire voice film can be reduced, and the vibration efficiency of the diaphragm can be further increased.
  • the photolithography technique is excellent in reproducibility as known, not only can the coil pattern be symmetrically manufactured on both sides of the base 110, but also the coil patterns can be formed on several bases through a single photolithography process. have. Thereby, manufacturing cost can be reduced significantly.

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  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)

Abstract

La présente invention concerne un film vocal, son procédé de fabrication et un haut-parleur de type plat le comprenant. Le film vocal de la présente invention comprend : une base dotée d'une première surface et d’une seconde surface correspondant à la première surface ; un premier motif de bobine imprimé dans un type piste continue sur la première surface de la base ; et un second motif de bobine imprimé dans un type piste continue sur la seconde surface de la base. Les premier et second motifs de bobine peuvent être fabriqués par un procédé d'impression utilisant la photolithographie.
PCT/KR2009/004010 2009-07-20 2009-07-20 Film vocal ayant des bobines fixées dans un type à motif, son procédé de fabrication et haut-parleur de type plat le comprenant WO2011010754A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/KR2009/004010 WO2011010754A1 (fr) 2009-07-20 2009-07-20 Film vocal ayant des bobines fixées dans un type à motif, son procédé de fabrication et haut-parleur de type plat le comprenant

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/KR2009/004010 WO2011010754A1 (fr) 2009-07-20 2009-07-20 Film vocal ayant des bobines fixées dans un type à motif, son procédé de fabrication et haut-parleur de type plat le comprenant

Publications (1)

Publication Number Publication Date
WO2011010754A1 true WO2011010754A1 (fr) 2011-01-27

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PCT/KR2009/004010 WO2011010754A1 (fr) 2009-07-20 2009-07-20 Film vocal ayant des bobines fixées dans un type à motif, son procédé de fabrication et haut-parleur de type plat le comprenant

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WO (1) WO2011010754A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2017214855A1 (fr) * 2016-06-14 2017-12-21 邓克忠 Structure pneumatique monocorps
CN113490119A (zh) * 2021-05-20 2021-10-08 汉得利（常州）电子股份有限公司 一种音膜组、贴合治具、制作方法及发声器件

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR19990010588U (ko) * 1997-08-29 1999-03-15 이형도 평판형 스피커
KR20040091056A (ko) * 2002-02-28 2004-10-27 후루카와 덴키 고교 가부시키가이샤 평면 스피커
JP2004319571A (ja) * 2003-04-11 2004-11-11 Matsushita Electric Ind Co Ltd 平面コイルとその製造方法
KR20050054641A (ko) * 2003-12-05 2005-06-10 신정열 양면 보이스코일판을 구비하는 평판형 스피커
JP2005252684A (ja) * 2004-03-04 2005-09-15 Clarion Co Ltd 平面スピーカー
KR20050091444A (ko) * 2004-03-12 2005-09-15 삼성전기주식회사 마이크로 스피커

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR19990010588U (ko) * 1997-08-29 1999-03-15 이형도 평판형 스피커
KR20040091056A (ko) * 2002-02-28 2004-10-27 후루카와 덴키 고교 가부시키가이샤 평면 스피커
JP2004319571A (ja) * 2003-04-11 2004-11-11 Matsushita Electric Ind Co Ltd 平面コイルとその製造方法
KR20050054641A (ko) * 2003-12-05 2005-06-10 신정열 양면 보이스코일판을 구비하는 평판형 스피커
JP2005252684A (ja) * 2004-03-04 2005-09-15 Clarion Co Ltd 平面スピーカー
KR20050091444A (ko) * 2004-03-12 2005-09-15 삼성전기주식회사 마이크로 스피커

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2017214855A1 (fr) * 2016-06-14 2017-12-21 邓克忠 Structure pneumatique monocorps
CN113490119A (zh) * 2021-05-20 2021-10-08 汉得利（常州）电子股份有限公司 一种音膜组、贴合治具、制作方法及发声器件

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