UTG diaphragm loudspeaker and microphone

Abstract

The invention provides a UTG diaphragm loudspeaker comprising a magnetic assembly used for generating magnetic lines of force; the vibrating diaphragm comprises UTG glass, and the thickness of the vibrating diaphragm ranges from 0.01 mm to 0.1 mm; and the voice coil is configured corresponding to the vibrating diaphragm and is matched with the magnetic assembly to generate driving force to push the vibrating diaphragm to vibrate, and the thickness of the vibrating diaphragm is as thin as 0.01 mm.

Description

Technical Field

[0001] The present invention relates to a loudspeaker and a microphone, and in particular to a UTG diaphragm loudspeaker and a microphone. Background Art

[0002] A loudspeaker is a device that converts electronic signals into sound. Its development history spans over a century, dating back to the 19th century. Common audio output devices, such as speakers and headphones, contain a diaphragm structure. When sound signals are output, the diaphragm vibrates, transmitting the sound. To ensure the diaphragm effectively vibrates in response to sound signals of varying frequencies, it is best to use a material with high rigidity, low density, and appropriate damping properties.

[0003] Generally speaking, a speaker primarily consists of a magnet, a coil corresponding to the magnet, and a diaphragm. It often also includes other supporting components, such as a diaphragm surround, a spider or suspension, and a frame. The alternating current within the coil and the magnetic field interact according to Fleming's law, driving the diaphragm to vibrate. Because sound transmission and absorption (attenuation) are frequency-dependent and nonlinear, sound is generated by the vibration of the diaphragm. Therefore, the diaphragm's material, manufacturing method, shape, and other characteristics influence the speaker's quality.

[0004] With the rapid development of electronic information technology, more and more sound-generating devices are being used in various electronic products, especially in the widely used mobile communication devices. People are not only concerned about miniaturization and multi-functionality, but also demand high-quality, distortion-free audio. As the core component of sound-generating devices, the design of the diaphragm directly affects the performance of the acoustic device. Summary of the Invention

[0005] According to one aspect of the present invention, a UTG diaphragm speaker is provided, comprising: a magnetic assembly for generating magnetic lines of force; a diaphragm for facilitating sound radiation, the diaphragm comprising UTG glass, with a thickness of 0.01 to 0.1 mm; and a voice coil configured to correspond to the UTG diaphragm and cooperating with the magnetic assembly to generate a driving force that propels the UTG diaphragm to vibrate. The UTG diaphragm speaker also includes a surround that connects the diaphragm to the outer frame.

[0006] The UTG manufacturing method can be divided into one-time forming and two-time processing forming. The one-time processing forming can adopt a non-contact narrow slit continuous pull-down method, which can stably achieve a thickness of 30 microns or even less, or an overflow pull-down method. During the entire process, it will not be exposed to the outside world, so the surface of the glass plate is flat and clean, and no grinding and polishing is required. To successfully pull down ultra-thin glass, the viscosity of the raw materials and the pull-down speed must be precisely controlled, and uneven thickness, holes, or even broken pieces must be avoided during the glass pulling process. The UTG diaphragm may include, for example, aluminosilicate, borosilicate, aluminoborosilicate, soda lime or other suitable glasses, but is not limited thereto. In some embodiments, the UTG layer is formed into a UTG layer 130 by a unit-shaped cutting and thinning process to form the mother glass.

[0007] In another embodiment, the diaphragm includes at least one upper layer or a lower layer, with a thickness greater than or equal to 1 micron and less than or equal to 15 microns. The upper layer or the lower layer is made of aluminum, nickel, copper, diamond, resin, or polymer. The UTG diaphragm is a planar UTG diaphragm or a three-dimensional UTG diaphragm. The UTG diaphragm includes the following shapes: flat elongated, flat rectangular, flat circular, flat elliptical, flat elongated, with a strip structure, 3D concave, 3D convex, cup-shaped, bowl-shaped, dome-shaped, or pyramidal. The UTG speaker diaphragm is suitable for use in speakers, headphones, mobile phones, laptops, tablets, and televisions.

[0008] In another embodiment, the UTG diaphragm microphone includes a UTG glass diaphragm, wherein the UTG diaphragm has a thickness of 0.01 to 0.1 mm, and the diaphragm includes at least an upper membrane or a lower membrane with a thickness greater than or equal to 1 micron and less than or equal to 15 microns, and the upper membrane or the lower membrane is aluminum, nickel, copper, diamond, resin or polymer. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] Figure 1 A cross-sectional structural diagram of a diaphragm according to an embodiment of the present invention is shown.

[0010] Figures 2A-2D A schematic cross-sectional view of a diaphragm according to an embodiment of the present invention is shown.

[0011] Figure 2E A diaphragm structure applied to headphones according to an embodiment of the present invention is shown, including a top view and a cross-sectional view.

[0012] Figure 3A A partial structural diagram of a loudspeaker according to an embodiment of the present invention is shown.

[0013] Figure 3B A schematic diagram showing a partial structure of a loudspeaker according to another embodiment of the present invention.

[0014] Figure 3C A partial structural diagram of a loudspeaker according to yet another embodiment of the present invention is shown.

[0015] Figure 4 A schematic diagram of a UTG diaphragm microphone assembly according to an embodiment of the present invention is shown.

[0016] Explanation of symbols:

[0017] 100:UTG diaphragm structure

[0018] 110: Upper membrane

[0019] 130:UTG layer

[0020] 150: lower membrane

[0021] 200a: Planar UTG diaphragm

[0022] 200b: Dome-shaped UTG diaphragm

[0023] 200c, 200d, 200d': UTG diaphragm with dome-shaped and wing-shaped structure

[0024] 200e:UTG diaphragm

[0025] 200-1: Dome Area

[0026] 200-2: Overhanging edge

[0027] 30a, 30b, 30c: Speakers

[0028] 300: Yoke

[0029] 310:On the board

[0030] 320: Permanent magnet

[0031] 330: Frame

[0032] 340: Overhang

[0033] 340a: hanging edge ring

[0034] 350: Voice coil

[0035] 360: Air Gap

[0036] 400:UTG diaphragm

[0037] 410: Coil

[0038] 420: Iron

[0039] 430: Magnetic Yoke

[0040] 440: Overhang

[0041] 450: Terminal block DETAILED DESCRIPTION

[0042] The present invention will be described in detail herein with respect to specific embodiments of the invention and their viewpoints. Such descriptions are for explaining the structure or step flow of the present invention, and are provided for illustrative purposes rather than for limiting the scope of the present invention. Therefore, in addition to the specific embodiments and preferred embodiments in the specification, the present invention can also be widely implemented in other different embodiments. The following describes the implementation of the present invention through specific specific embodiments, and people familiar with this technology can easily understand the efficacy and advantages of the present invention through the contents disclosed in this specification. The present invention can also be applied and implemented through other specific embodiments, and the various details described in this specification can also be applied based on different needs, and various modifications or changes can be made without departing from the spirit of the present invention.

[0043] Since energy loss will occur when sound or vibration is transmitted from a first medium to a second medium, especially when the two media have different sound speeds or acoustic impedances (acoustic-impedance), even if the two media have the same density. Appropriate energy loss is beneficial to the quality of the sound it emits. With the rapid development of electronic information technology, more and more sound-generating devices are used in various electronic products, especially mobile communication devices that are widely used by people. People are not only concerned about their miniaturization and multi-functions, but also require their voice effects to be high-quality and distortion-free. In order to further apply the aforementioned diaphragm with ultra-thin material to miniature or small speakers and microphones, such as microphones in headphones or mobile phones, refer to Figure 1 , wherein the thickness of the UTG diaphragm 100 should preferably be controlled in the range of 0.01 to 0.1 mm.

[0044] The present invention provides a loudspeaker having a UTG diaphragm structure 100. Figure 1As shown, the material used for the UTG diaphragm structure 100 is UTG homogeneous glass. While typical glass is hard and brittle, when its thickness is ≤100 microns, it becomes flexible and bendable, making it suitable for use as the diaphragm of the present invention. UTG glass is 0.01 to 0.1 mm thick and is produced using a strengthening process to enhance its flexibility and durability. UTG glass manufacturing methods can be divided into primary forming and secondary forming. Primary forming can utilize a non-contact narrow-slit continuous drawdown method, which can consistently achieve thicknesses of 30 microns or less. Alternatively, an overflow drawdown method can be used, which eliminates external contact throughout the entire process, resulting in a smooth and clean glass surface and eliminating the need for further grinding or polishing. Successfully drawing ultra-thin glass requires precise control of the raw material viscosity and drawdown speed, as well as avoiding uneven thickness, cracks, or even broken pieces during the drawing process. The rollers used to transport the glass, pressure control, and surface flatness are also critical. After the raw UTG glass is produced, in one embodiment, it can be cut during the manufacturing process to a total thickness of less than 30 microns. The UTG processing procedure of the present invention includes the following steps: immersing the UTG material to be processed in an HF solution for etching; the concentration of the HF solution is 1 to 4 mol / L; the etching time is 8 to 30 minutes; cleaning to remove residual acid on the surface, preheating to 350 to 400°C; immersing the preheated UTG in a strengthening solution; and then annealing the UTG. In another embodiment, CPI (transparent polyimide) has the flexibility of a plastic material. CPI material can be used to stack the UTG material using a transparent adhesive. UTG, optical glue, CPI, and a hardening layer are stacked in sequence, with UTG serving as the bottom layer to support the softer CPI on the top layer.

[0045] Figure 1 The UTG diaphragm structure 100 is shown. The UTG layer 130 of the UTG diaphragm structure 100 may include, for example, aluminosilicate, borosilicate, aluminoborosilicate, soda-lime, or other suitable glass, but is not limited thereto. In some embodiments, the UTG layer 130 is formed from mother glass by a cell cutting process, and an anti-shatter coating process may also be applied.

[0046] In some optional embodiments, the thickness d2 of the UTG layer 130 is preferably about 10 microns to 50 microns. According to an embodiment of the present invention, the upper or lower surface of the UTG diaphragm structure 100 can be partially or entirely coated, grown, or sputtered with aluminum, nickel, copper, diamond, resin, or polymer films to increase the diaphragm damping (damping). In an optional embodiment, after the UTG original sheet is produced, ultra-thin diamond, aluminum, nickel, or copper films are grown during the manufacturing process, which can not only adjust the damping but also enhance the toughness, with a thickness of less than 50 microns. In one embodiment, an ultra-thin film covering, such as a diamond film, can be grown on at least one side of both sides of the UTG layer 130, each with a thickness of less than 15um, such as the upper film 110 and the lower film 150. The thickness d1 of the upper film 110 is preferably about 1-15 microns, and the thickness d1 of the lower film 150 is also preferably about 1-15 microns. The ultra-thin diamond glass film adopts the panel manufacturing process to grow diamond-grade UTG. It does not require additional chemical strengthening process and has the property of being unbreakable. The surface is as soft as paper but has diamond-grade hardness. Most importantly, it is unbreakable.

[0047] As more and more sound-generating devices are applied to various electronic products, the UTG diaphragm structure 100 of the present invention can be applied to speakers of various electronic devices, including but not limited to speakers, headphones, mobile phones, laptops, tablets, televisions, etc.; and the UTG diaphragm of the present invention can be applied to the diaphragm in the microphone of a mobile communication device. According to an embodiment of the present invention, the method of making the UTG diaphragm 100 includes making it through a melt-pull-down technology. Based on the above structure, the present invention does not need to be chemically treated to enhance toughness, and does not need to be thinned by etching. In addition, the diaphragm does not need to be processed in a gradient manner. On the other hand, the characteristics of the above diaphragm structure and material are used, and the cross-sectional shape of the diaphragm is used to illustrate the embodiment of the new diaphragm provided by the present invention.

[0048] Please refer to Figures 2A-2D , which is a cross-sectional schematic diagram according to an embodiment of the present invention, using Figure 1 The technology shown is completed, wherein the cross-sectional shape of the diaphragm made by using the above structure can be various shapes, such as: Figure 2A The flat UTG diaphragm 200a shown in FIG. Figure 2B The dome-shaped UTG diaphragm 200b shown in FIG. Figures 2C-2D The UTG diaphragms (200c, 200d) with dome-shaped and wing-shaped structures shown in the figure can be shaped as follows when viewed from above: circular, rectangular, oval (Oval / Elliptical), obround, etc. Three-dimensional shapes include cup-shaped, bowl-shaped, dome-shaped, pyramid-shaped, etc.

[0049] Figure 2EThe UTG diaphragm 200e used in headphones is shown, including a top view and a cross-sectional view. The UTG diaphragm 200e includes a central dome region 200-1 and a surrounding edge 200-2 surrounding the central dome region 200-1. The annular folds of the edge 200-2 can also be grooves of various shapes. In one embodiment, the multiple grooves are arranged in a rotating radial pattern. Due to its energy conversion principle, the diaphragm is subjected to force at the coil position, and the edge of the diaphragm is suspended above the frame. Because the amount of air agitated by the diaphragm greatly affects the amount of low-frequency sound, the annular region, i.e., the edge 200-2, generally needs to be flexible enough to undergo large deformations while also having a certain degree of elasticity to provide the diaphragm with the ability to reset. The design of the dome region serves to increase the rigidity of this portion of the diaphragm to reduce high-frequency distortion caused by split vibrations. The surrounding wrinkled region of the diaphragm requires a certain degree of flexibility and elasticity, and the rotating radial folds or grooves block the expansion of sound waves.

[0050] Reference Figure 3A , which is a partial structural diagram of a speaker according to an embodiment of the present invention. The speaker 30a may be Figure 2A The planar UTG diaphragm 200a shown, Figure 3A The relative position relationship between the planar diaphragm 200a and other components in the loudspeaker 30a is shown in FIG. Figure 3A As shown, the speaker 30a mainly includes a yoke 300 as a back plate, a washer 310, a permanent magnet 320, an outer frame 330, a surround 340, a surround ring 340a, a voice coil 350, and a UTG diaphragm 200a. The UTG diaphragm 200a covers the permanent magnet 320. The UTG diaphragm 200a does not touch the stationary components of the speaker 30a, such as the yoke 300, the washer 310, the permanent magnet 320, and the outer frame 330. Instead, it only contacts the movable components of the speaker, such as the surround 340. An air gap 360 is formed between the yoke 300 and the outer frame 330.

[0051] According to an embodiment of the present invention, the permanent magnet 320 is a ring-shaped magnet disposed inside the voice coil 350. The upper plate 310 has a similar ring shape to the permanent magnet 320. The permanent magnet 320 is disposed inside the yoke 300 and is U-shaped with a through hole at the bottom. Similarly, both the permanent magnet 320 and the upper plate 310 have a hollow portion aligned with the yoke 300. This configuration can reduce the weight of the speaker assembly and provide a vent for airflow at the rear of the speaker. According to an embodiment of the present invention, the planar diaphragm 200a is coupled to the outer frame 330 via a suspension 340 and a suspension ring 340a. The suspension 340 is an elastic membrane that can vibrate together with the coupled planar diaphragm 200a, and the suspension ring 340a can be used to position the suspension 340.

[0052] Figure 3B This is a partial structural diagram of a speaker according to another embodiment of the present invention. Figure 2D The UTG diaphragm 200d shown has a dome-shaped and winged structure. Figure 3B The relative positional relationship between the dome-shaped wing-shaped diaphragm 200d and other components in the speaker 30b is shown in FIG. Figure 3B As shown, the loudspeaker 30b mainly includes a yoke 300 as a bottom plate, an upper plate 310, a permanent magnet 320, an outer frame 330, a suspension 340, a suspension ring 340a, a voice coil 350, and a dome-shaped UTG diaphragm 200d with a winged structure. The dome-shaped UTG diaphragm 200d with a winged structure completely covers the permanent magnet 320. The dome-shaped UTG diaphragm 200d with a winged structure does not touch the fixed components of the loudspeaker 30a, such as the yoke 300, upper plate 310, permanent magnet 320, and outer frame 330. It only touches the movable components of the loudspeaker, such as the suspension 340 and voice coil 350. An air gap 360 is formed between the yoke 300 and the outer frame 330.

[0053] According to an embodiment of the present invention, the above-mentioned dome-shaped and wing-shaped UTG diaphragm 200d is coupled to the outer frame 330 through the suspension 340 and the suspension ring 340a. The suspension 340 is an elastic membrane that can vibrate together with the coupled dome-shaped and wing-shaped UTG diaphragm 200d, and the suspension ring 340a can be used to position the suspension 340.

[0054] Similarly, Figure 3C FIG. 1 is a partial structural diagram of a speaker according to another embodiment of the present invention. Figure 2D The dome-shaped UTG diaphragm 200 d ′ with a winged structure is shown, wherein the dome-shaped UTG diaphragm 200 d ′ with a winged structure and the suspension edge 340 are integrally formed. Figure 3CThe relative position relationship between the dome-shaped and winged UTG diaphragm 200d' and other components in the speaker 30b is shown. Figure 3C As shown, the speaker 30c mainly includes a yoke 300 as a base plate, an upper plate 310, a permanent magnet 320, an outer frame 330, a suspension 340, a voice coil 350, and a dome-shaped UTG diaphragm 200d' with a winged structure. The dome-shaped UTG diaphragm 200d' with a winged structure completely covers the permanent magnet 320. The dome-shaped UTG diaphragm 200d' with a winged structure does not touch the fixed components of the speaker 30a, such as the yoke 300, upper plate 310, permanent magnet 320, and outer frame 330, but only contacts the movable components of the speaker, such as the suspension 340 and voice coil 350. The yoke 300 is arranged inside the outer frame 330 and has an air gap 360 between it and the outer frame 330. According to an embodiment of the present invention, the dome-shaped UTG diaphragm 200d' with a winged structure is coupled to the outer frame 330 via its suspension 340, where the suspension 340 is elastic.

[0055] Please refer to Figures 3A-3C , serving as a vibration component of a loudspeaker (30a, 30b, 30c), it includes a UTG diaphragm (200a, 200d, 200d'), a suspension 340, an outer frame 330 as a support member, and a voice coil 350. In addition to the vibration component, the loudspeaker (30a, 30b, 30c) also includes a yoke 300, an upper plate 310, a permanent magnet 320, and an outer frame 330. The yoke 300 is used to accommodate a hollow center containing the permanent magnet 320 and provided in the voice coil 350, which serves as a magnetic component. The magnetic circuit component is fixed to the yoke 300 via the upper plate 310. The voice coil 350 is coupled to the UTG diaphragm (200a, 200d, 200d'), and an alternating current flows through it, interacting with the magnetic lines of force generated by the permanent magnet 320 to provide a driving force, thereby driving the UTG diaphragm (200a, 200d, 200d') to vibrate.

[0056] The present invention can be used as a microphone diaphragm. Both dynamic and condenser microphones utilize the same principle to collect sound. The front of the microphone diaphragm receives sound pressure, while the back is connected to a coil, which in turn is wrapped around a magnet. When the front of the diaphragm receives sound pressure, the diaphragm's vibration causes the coil to move, inducing an electric current in the magnet. The diaphragm's movement increases with the intensity of the sound pressure, and the microphone's circuitry amplifies the resulting current. Compared to condenser microphones, condenser microphones require an additional power source to operate.

[0057] See Figure 4The microphone assembly includes a UTG diaphragm 400, which is used to receive sound wave vibrations and convert these physical kinetic energies into electronic signals, generating electromagnetic induction with the coil 410 through vibration. The microphone usually also includes an upper iron 420 and a yoke 430. In addition, the assembly also includes a suspension 440 and a terminal head 450. When sound waves enter the microphone, the UTG diaphragm 400 vibrates due to the pressure of the sound waves. According to Faraday's law of electromagnetic induction, the coil 410 coupled to the UTG diaphragm 400 generates an induced current in the magnetic field. Ribbon microphones are also a type of dynamic microphone. The main difference from dynamic microphones is that very thin metal sheets are used instead of diaphragms and coils. The present invention can be applied to the various microphones mentioned above.

[0058] The present invention utilizes the UTG diaphragm 400 made of the above-mentioned UTG, and its shape can be various shapes, such as circular, rectangular, elliptical, oblong, etc. The thickness of the UTG diaphragm 400 of the microphone should preferably be controlled in the range of 0.01 to 0.1 mm. The material selected for the UTG diaphragm 400 is UTG homogeneous glass. As mentioned above, the UTG glass manufacturing method can be divided into one-time molding and two-time processing molding. The one-time processing molding can adopt a non-contact narrow slit continuous pull-down method or an overflow pull-down method. The microphone with the UTG diaphragm 400 can be used in mobile phones, tablets, computers, laptops, game consoles, local telephones, public telephones, vehicles, karaoke, etc.

[0059] The shape of the diaphragm can be a flat elongated shape, a flat rectangular shape, a flat circular shape, a flat elliptical shape, a flat oblong shape, or a three-dimensional shape, including a 3D elongated shape with a strip structure, a 3D concave circle (cone), a 3D convex circle (dome), a cup shape, a bowl shape, a dome shape, a pyramid shape, and other shapes.

[0060] The above description is a preferred embodiment of the present invention. Those skilled in the art should understand that it is intended to illustrate the present invention and is not intended to limit the scope of the patent rights claimed by the present invention. The scope of patent protection shall be determined by the appended patent claims and their equivalents. Any changes or modifications made by those skilled in the art without departing from the spirit or scope of this patent shall be considered equivalent changes or designs completed under the spirit of the present invention and shall be included in the following patent claims.

Claims

1. A UTG diaphragm speaker, characterized in that: include: a magnetic assembly for generating magnetic lines of force; a diaphragm for transmitting sound, the diaphragm comprising UTG glass and having a thickness of 0.01 to 0.1 mm; and A voice coil is configured corresponding to the diaphragm and cooperates with the magnetic component to generate a driving force to drive the diaphragm to vibrate.

2. The UTG diaphragm speaker according to claim 1, wherein: The invention also comprises a suspension edge for connecting the diaphragm to the outer frame.

3. The UTG diaphragm loudspeaker according to claim 1 or 2, characterized in that: The diaphragm comprises at least an upper membrane or a lower membrane, and the thickness thereof is greater than or equal to 1 micron and less than or equal to 15 microns.

4. The UTG diaphragm loudspeaker according to claim 3, wherein: The upper film or the lower film is aluminum, nickel, copper, diamond, resin or polymer.

5. The UTG diaphragm speaker according to claim 1, wherein: The diaphragm includes the following shapes: flat elongated, flat rectangular, flat circular, flat elliptical, flat elongated, 3D elongated with a strip structure, 3D concave (cone), 3D convex (dome), cup-shaped, bowl-shaped, dome-shaped, and pyramid-shaped.

6. The UTG diaphragm loudspeaker according to claim 1 or 2, characterized in that: The diaphragm is suitable for speakers, headphones, mobile phones, laptops, tablets, and TVs.

7. A UTG diaphragm microphone, characterized in that: The invention comprises a diaphragm which is vibrated by sound, wherein the diaphragm comprises UTG glass, wherein the thickness of the diaphragm is 0.01 to 0.1 mm.

8. The UTG diaphragm microphone according to claim 7, wherein: The diaphragm comprises at least an upper membrane or a lower membrane, and the thickness thereof is greater than or equal to 1 micron and less than or equal to 15 microns.

9. The UTG diaphragm microphone according to claim 8, wherein: The upper film or the lower film is aluminum, nickel, copper, diamond, resin or polymer.

10. The UTG diaphragm microphone according to claim 7, wherein: The diaphragm includes the following shapes: flat elongated, flat rectangular, flat circular, flat elliptical, flat elongated, 3D elongated with a strip structure, 3D concave (cone), 3D convex (dome), cup-shaped, bowl-shaped, dome-shaped, and pyramid-shaped.

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