CN212199090U - Flexible polyimide board and sound production device - Google Patents
Flexible polyimide board and sound production device Download PDFInfo
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- CN212199090U CN212199090U CN201922302473.8U CN201922302473U CN212199090U CN 212199090 U CN212199090 U CN 212199090U CN 201922302473 U CN201922302473 U CN 201922302473U CN 212199090 U CN212199090 U CN 212199090U
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Abstract
The utility model provides a flexible polyimide plate and a sound production device, wherein the flexible polyimide plate comprises a first auxiliary material layer, a main body layer and a second auxiliary material layer which are sequentially stacked from top to bottom; the first auxiliary material layer covers at least a part of the upper surface of the main body layer, and the second auxiliary material layer covers at least a part of the lower surface of the main body layer; the main body layer comprises at least one polyimide plate, and the first auxiliary material layer and the second auxiliary material layer are reinforcing plates or back adhesive. Compared with the prior art, the utility model discloses a flexible polyimide board is with low costs, and toughness and tensile strength are better.
Description
[ technical field ] A method for producing a semiconductor device
The utility model relates to an acoustoelectric field especially relates to a polyimide board that is easily crooked.
[ background of the invention ]
With the advent of the internet era, the number of mobile terminal devices has increased. Among the mobile devices, the mobile phone is undoubtedly the most common and portable mobile terminal device. Sound generating devices for playing sounds such as music are widely used in mobile terminal devices such as cellular phones.
Related art's sound production device, include the basin frame, be fixed in vibration system and drive on the basin frame the magnetic circuit of vibration system vibration sound production, vibration system is including being fixed in respectively the vibrating diaphragm, the drive of basin frame the voice coil loudspeaker voice coil and the elastic component of vibrating diaphragm vibration sound production, the elastic component is made for flexible circuit board, be used for with the voice coil loudspeaker voice coil support in on the basin frame, and with the voice coil loudspeaker voice coil electricity is connected.
However, in the related art, the flexible circuit board is relatively expensive, resulting in an increase in the cost of the sound production device.
Therefore, it is necessary to provide a new flexible polyimide sheet instead of the flexible circuit board to solve the above problems.
[ Utility model ] content
An object of the utility model is to provide a cost is lower relatively and toughness and tensile strength better flexible polyimide board.
In order to achieve the above object, the present invention provides a flexible polyimide board, which comprises a first auxiliary material layer, a main material layer and a second auxiliary material layer stacked in sequence from top to bottom; the first auxiliary material layer covers at least a part of the upper surface of the main body layer, and the second auxiliary material layer covers at least a part of the lower surface of the main body layer; the main body layer comprises at least one polyimide plate, and the first auxiliary material layer and the second auxiliary material layer are reinforcing plates or back adhesive.
Preferably, the main body layer comprises two layers which are sequentially stacked from top to bottom, the polyimide plates and the adhesive layers are clamped between the two layers of polyimide plates, and the two layers of polyimide plates are fixed through the adhesive layers.
Preferably, the main body layer comprises three layers which are sequentially stacked from top to bottom, the polyimide plates and the adhesive layers clamped between the two adjacent polyimide plates are fixed through the adhesive layers.
Preferably, the thickness of the bulk layer is greater than 12 μm.
The utility model also provides a sounding device, which comprises a basin frame, a vibration system fixed on the basin frame and a magnetic circuit system for driving the vibration system to vibrate; the vibration system comprises a vibrating diaphragm, a voice coil and an elastic part, wherein the vibrating diaphragm is fixed on the basin frame, the voice coil drives the vibrating diaphragm to vibrate, and the elastic part supports the voice coil on the basin frame; the elastic member is at least partially made of a flexible polyimide plate.
Preferably, the elastic element comprises two elastic elements which are arranged on two opposite sides of the voice coil at intervals, one of the elastic elements is made of a flexible circuit board and is electrically connected with the voice coil, and the other elastic element is made of the flexible polyimide board.
Preferably, the two elastic pieces are respectively connected with one end of the voice coil, which is far away from the diaphragm.
Compared with the related technology, the flexible polyimide plate has low cost, good toughness and tensile strength, and elastic modulus reaching 3GPA-8 GPA; the flexible printed circuit board is similar to the flexible printed circuit board in the aspects of elasticity, toughness, temperature resistance and tensile strength, and can replace the flexible printed circuit board under the condition of no electric property and welding requirement; meanwhile, compared with the sounding device only using the flexible circuit board, the sounding device using the flexible circuit board and the flexible polyimide board has low cost, can meet the requirements on toughness and strength and has good reliability.
[ description of the drawings ]
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained without inventive work, wherein:
FIG. 1 is a first cross-sectional view of a flexible polyimide sheet of the present invention;
FIG. 2 is a second cross-sectional view of a flexible polyimide sheet of the present invention;
FIG. 3 is a third cross-sectional view of a flexible polyimide sheet of the present invention;
fig. 4 is an exploded view of the sound device of the present invention.
[ detailed description ] embodiments
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
Referring to fig. 1, the present invention provides a flexible polyimide board 10, that is, a flexible polyimide board, where the flexible polyimide board 10 includes a first auxiliary material layer 1, a main material layer 2, and a second auxiliary material layer 3 stacked in sequence from top to bottom.
The first auxiliary material layer 1 is fixed on the upper surface of the main body layer 2, and the first auxiliary material layer 1 covers at least one part of the upper surface of the main body layer 2; according to the requirement of the flexible polyimide plate 10, the first auxiliary material layer 1 is a reinforcing plate or a back adhesive, and when the flexible polyimide plate 10 needs better strength, the first auxiliary material layer 1 is a reinforcing plate; when the flexible polyimide plate 10 needs to be bonded with an external product, the first auxiliary material layer 1 is a back adhesive, but the composition of the first auxiliary material layer 1 is not limited thereto, and may be made of other materials according to actual requirements.
The main body layer 2 is made of a polyimide plate, and the thickness of the main body layer 2 is larger than 12 microns.
The second auxiliary material layer 3 is fixed on the lower surface of the main body layer 2, and the second auxiliary material layer 3 covers at least a part of the lower surface of the main body layer 2; according to the requirement of the flexible polyimide plate 10, the second auxiliary material layer 3 is a reinforcing plate or a back adhesive, and when the flexible polyimide plate 10 needs better strength, the second auxiliary material layer 3 is a reinforcing plate; when the flexible polyimide plate 10 needs to be bonded with an external product, the second auxiliary material layer 3 is a back adhesive, and the composition of the second auxiliary material layer 3 is not limited thereto, and may be made of other materials according to actual requirements.
The flexible polyimide board of the present invention is not limited to the structure of the flexible polyimide board 10, and as shown in fig. 2, the present invention further provides a flexible polyimide board 20, which comprises a first auxiliary material layer 4, a main material layer 5 and a second auxiliary material layer 6 stacked in sequence from top to bottom; the first and second auxiliary material layers 4 and 6 have the same structure as the first and second auxiliary material layers 1 and 3, and will not be described here.
The main body layer 5 comprises two layers of polyimide plates 51 and an adhesive layer 52, wherein the two layers of polyimide plates 51 are sequentially stacked from top to bottom, the adhesive layer 52 is clamped between the two layers of polyimide plates 51, and the two layers of polyimide plates 51 are fixed through the adhesive layer 52. The thickness of the bulk layer 5 is greater than 12 μm. The flexible polyimide sheet 20 has a higher elastic modulus and a higher strength than the flexible polyimide sheet 10.
Referring to fig. 3, the present invention further provides a flexible polyimide sheet 30, which is formed by stacking a first auxiliary material layer 7, a main material layer 8 and a second auxiliary material layer 9 from top to bottom; the first and second auxiliary material layers 7 and 9 have the same structure as the first and second auxiliary material layers 1 and 3, and will not be described here.
The main body layer 8 comprises three layers of polyimide plates 81 stacked from top to bottom in sequence and an adhesive layer 82 sandwiched between two adjacent layers of the polyimide plates 81, and the two adjacent layers of the polyimide plates 81 are fixed through the adhesive layer 82. The thickness of the body layer 8 is greater than 12 μm. The flexible polyimide sheet 30 has a higher elastic modulus and a higher strength than the flexible polyimide sheet 20.
Of course, the flexible polyimide plate is not limited to the three types, and more layers of polyimide plates may be provided according to the actual thickness, strength and toughness requirements of the product.
Referring to fig. 4, the present invention further provides a sound-generating device 100 comprising the above-mentioned flexible polyimide board, wherein the sound-generating device 100 comprises a frame 10 ', a vibration system 30 ' fixed on the frame 10 ' for generating sound by vibration, and a magnetic circuit system 20 ' for driving the vibration system 30 ' to vibrate.
The vibration system 30 ' comprises a diaphragm 301 ' fixed to the frame 10 ', a voice coil 302 ' for driving the diaphragm 301 ' to vibrate, a flexible member 303 ' and another flexible member 304 '; the flexible member 303 'and the other flexible member 304' are respectively connected to an end of the voice coil 302 'away from the diaphragm 301', so as to support the voice coil 302 'on the frame 10'.
The flexible member 303 ' is made of a flexible circuit board and is electrically connected to the voice coil 302 ', and the other flexible member 304 ' is made of any one of the flexible polyimide board 10, the flexible polyimide board 20, and the flexible polyimide board 30 described above.
The other flexible member 304 'includes a through hole 3040' penetrating therethrough, and the other flexible member 304 'and the through hole 3040' are in an "i" shape; because the other flexible piece 304' has better toughness and tensile strength, the I-shaped structure has good vibration performance and fracture resistance, and the cost is reduced.
Compared with the related technology, the flexible polyimide plate has low cost, good toughness and tensile strength, and elastic modulus reaching 3GPA-8 GPA; the flexible printed circuit board is similar to the flexible printed circuit board in the aspects of elasticity, toughness, temperature resistance and tensile strength, and can replace the flexible printed circuit board under the condition of no electric property and welding requirement; meanwhile, compared with the sounding device only using the flexible circuit board, the sounding device using the flexible circuit board and the flexible polyimide board has low cost, can meet the requirements on toughness and strength and has good reliability.
The utility model provides an above only do the embodiment of the utility model not consequently the restriction the patent scope of the utility model, all utilize the utility model discloses equivalent structure or equivalent flow transform that the content of description and drawing was done, or direct or indirect application is in other relevant technical field, all the same reason is included the utility model discloses an in the patent protection scope.
Claims (7)
1. A flexible polyimide plate is characterized by comprising a first auxiliary material layer, a main body layer and a second auxiliary material layer which are sequentially stacked from top to bottom; the first auxiliary material layer covers at least a part of the upper surface of the main body layer, and the second auxiliary material layer covers at least a part of the lower surface of the main body layer; the main body layer comprises at least one polyimide plate, and the first auxiliary material layer and the second auxiliary material layer are reinforcing plates or back adhesive.
2. The flexible polyimide board as claimed in claim 1, wherein the main layer comprises two polyimide boards stacked in sequence from top to bottom and an adhesive layer sandwiched between the two polyimide boards, and the two polyimide boards are fixed by the adhesive layer.
3. The flexible polyimide board of claim 1, wherein the main body layer comprises three polyimide boards stacked in sequence from top to bottom and an adhesive layer sandwiched between two adjacent polyimide boards, and the two adjacent polyimide boards are fixed by the adhesive layer.
4. The flexible polyimide sheet of claim 1, wherein the body layer has a thickness greater than 12 μ ι η.
5. A sounding device comprises a basin frame, a vibration system fixed on the basin frame and a magnetic circuit system driving the vibration system to vibrate; the vibration system comprises a vibrating diaphragm, a voice coil and an elastic part, wherein the vibrating diaphragm is fixed on the basin frame, the voice coil drives the vibrating diaphragm to vibrate, and the elastic part supports the voice coil on the basin frame; characterized in that said elastic member is at least partly made of a flexible polyimide sheet as claimed in any one of the claims 1-4.
6. The sounding device according to claim 5, wherein the resilient member comprises two flexible printed circuit boards spaced apart from each other on opposite sides of the voice coil, one of the flexible printed circuit boards is electrically connected to the voice coil, and the other of the flexible printed circuit boards is made of the flexible polyimide.
7. The sounding device according to claim 6, wherein two of the elastic members are respectively connected to an end of the voice coil remote from the diaphragm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922302473.8U CN212199090U (en) | 2019-12-19 | 2019-12-19 | Flexible polyimide board and sound production device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922302473.8U CN212199090U (en) | 2019-12-19 | 2019-12-19 | Flexible polyimide board and sound production device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212199090U true CN212199090U (en) | 2020-12-22 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922302473.8U Active CN212199090U (en) | 2019-12-19 | 2019-12-19 | Flexible polyimide board and sound production device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212199090U (en) |
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2019
- 2019-12-19 CN CN201922302473.8U patent/CN212199090U/en active Active
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