Optical filter holder assembly, camera module and terminal device

Abstract

The application relates to the field of camera technologies, and particularly discloses a filter support assembly, a camera module and a terminal device. The filter support assembly comprises a support and a filter; the support has a first surface, a second surface arranged opposite to the first surface, an outer surface connected between the first surface and the second surface, and a light transmission hole penetrating through the first surface and the second surface; the support is formed with an inner surface connected between the first surface and the second surface; the support is made of liquid metal forming; the support is provided with a position-avoiding structure extending from the second surface to the inner surface, and the position-avoiding structure is configured to avoid the position of a gold wire; the filter is arranged on the first surface, and the outer surface of the support is relatively protruded from the side surface of the filter in a direction parallel to the first surface, and a preset distance is arranged between the outer surface of the support and the side surface of the filter. The filter support assembly can improve the structural strength of the support, reduce the weight of the support, and ensure the use stability of the camera module.

Description

Technical Field

[0001] This application relates to the field of camera technology, specifically to a filter bracket assembly, a camera module, and a terminal device. Background Technology

[0002] Currently, in camera modules, the light filter is typically mounted on a bracket. To reduce the weight of the bracket, its structure is usually made entirely of plastic or a combination of plastic and steel. However, due to the difference in thermal expansion coefficients between plastic and the light filter, when the bracket is heated and generates internal stress, this stress is transferred to the light filter, leading to cracking of the filter and affecting the stability of the camera module. Utility Model Content

[0003] In view of the above, it is necessary to provide a filter bracket assembly, a camera module, and a terminal device to improve the structural strength of the bracket, reduce its weight, and ensure the stability of the camera module in use.

[0004] In a first aspect, embodiments of this application provide a filter holder assembly, including a holder and a filter; the holder has a first surface, a second surface opposite to the first surface, an outer surface connecting the first surface and the second surface, and a light-transmitting hole penetrating the first surface and the second surface; the holder has an inner surface connecting the first surface and the second surface; the holder is formed by liquid metal molding; the holder is provided with a clearance structure extending from the second surface to the inner surface, and the clearance structure is configured to clearance a gold wire; the filter is disposed on the first surface, and along a direction parallel to the first surface, the outer surface of the holder protrudes relative to the side surface of the filter, and a preset distance is provided between the outer surface of the holder and the side surface of the filter.

[0005] The aforementioned filter holder assembly is manufactured using liquid metal molding processes, such as injection molding, 3D printing, and die casting. Liquid metal has a low density, which reduces the weight of the holder while maintaining structural strength, thus ensuring the stability of the filter holder assembly. Liquid metal molding processes are close to net-shape forming, facilitating the high-precision manufacturing of complex structures through injection molding, 3D printing, and die casting. This reduces post-processing requirements, lowers production costs, and simplifies processing. The low shrinkage rate and good repeatability of liquid metal ensure consistent and stable holder molding, allowing the outer surface of the holder to protrude beyond the filter's side. This reduces the holder's size while ensuring normal operation, enabling miniaturization of the camera module. Furthermore, the inclusion of a clearance structure on the holder creates space for the gold wires, facilitating their arrangement and ensuring stable operation.

[0006] In one embodiment, the filter support assembly further includes a first colloid bonded between the first surface and the filter, the first colloid having a ring-shaped structure.

[0007] The aforementioned filter support assembly, by incorporating a first colloid, achieves a stable connection between the support and the filter, thereby ensuring the structural strength of the filter support assembly.

[0008] In one embodiment, the filter holder assembly further includes a second colloid, one side of which is bonded to the second surface and the other side of which is bonded to the circuit board. The second colloid has a ring-shaped structure. One end of the gold wire is connected to the circuit board and the other end of the gold wire is connected to the photosensitive chip. The gold wire passes through the clearance structure.

[0009] The aforementioned filter holder assembly achieves a stable connection between the holder and the circuit board by incorporating a second colloid.

[0010] In one embodiment, an air vent is provided on one side of the second colloid, recessed from the inside out.

[0011] The aforementioned filter bracket assembly, by opening vent holes in the second colloid, allows air to circulate inside and outside the enclosed space surrounded by the filter, bracket, and circuit board. When the filter bracket assembly is applied in a camera module, it can ensure that the positive and negative pressures within the enclosed space surrounded by the filter, bracket, and circuit board remain balanced, thus preventing damage to other components due to unstable positive and negative pressures.

[0012] In one embodiment, the outer side of the bracket is provided with at least one protrusion extending away from the inner side; and / or, the first side, the second side, the outer side and the inner side of the bracket are provided with PVD coating.

[0013] The aforementioned filter holder assembly, by providing the aforementioned protrusions, is beneficial to improving the structural strength of the holder; and / or, by providing PVD coatings on the first surface, second surface, outer surface, and inner surface, the reflectivity of the holder is reduced, so that the reflectivity of the holder can reach less than 3.0%.

[0014] In one embodiment, the preset distance ranges from 0.07mm to 0.15mm.

[0015] The aforementioned filter holder assembly, by limiting the range of preset distances, ensures that the difference between the holder and the filter is within a reasonable range, thus reducing the holder size while maintaining its structural strength. When the preset distance is less than 0.07mm, the difference between the holder and the filter is too small, which is detrimental to ensuring the structural strength of the holder; when the preset distance is greater than 0.15mm, the difference between the holder and the filter is too large, resulting in a larger holder size, which is detrimental to reducing the holder size.

[0016] In one embodiment, the liquid metal is an amorphous zirconium alloy.

[0017] The aforementioned filter holder assembly, by specifying that the liquid metal is made of amorphous zirconium alloy, helps to meet the requirements of high strength, high hardness, high elasticity, excellent thermal conductivity and corrosion resistance of the holder.

[0018] In one embodiment, the avoidance structure is a slope, arc surface, or stepped surface connecting the second surface and the inner surface.

[0019] The aforementioned filter support assembly, by defining the avoidance structure as a slope, arc, or stepped surface, avoids the gold wire.

[0020] Secondly, embodiments of this application also provide a camera module, including a filter bracket assembly as described in any of the above technical solutions.

[0021] In the aforementioned camera module, the filter holder assembly is made of liquid metal through processes such as injection molding, 3D printing, and die casting. Liquid metal has a low density, which reduces the weight of the holder while maintaining structural strength, thus ensuring the stability of the filter holder assembly. The near-net-shape forming process of liquid metal facilitates high-precision manufacturing of complex structures through injection molding, 3D printing, and die casting, reducing post-processing requirements, production costs, and processing difficulty. The low shrinkage rate and good repeatability of liquid metal help ensure the consistency and stability of the holder's molding, allowing the outer surface of the holder to protrude beyond the filter's side. This reduces the size of the holder while ensuring normal use, enabling miniaturization of the camera module. Furthermore, the inclusion of a clearance structure on the holder creates space for the gold wires, facilitating their arrangement and ensuring stable operation.

[0022] Thirdly, embodiments of this application also provide a terminal device, including the camera module described in the above technical solution.

[0023] In the aforementioned terminal equipment, the filter holder assembly of the camera module is made of liquid metal through processes such as injection molding, 3D printing, and die casting. Liquid metal has a low density, which reduces the weight of the holder while maintaining structural strength, thus ensuring the stability of the filter holder assembly. The near-net-shape forming process of liquid metal facilitates high-precision manufacturing of complex structures through injection molding, 3D printing, and die casting, reducing post-processing requirements, production costs, and processing difficulty. The low shrinkage rate and good repeatability of liquid metal help ensure the consistency and stability of the holder's molding, allowing the outer surface of the holder to protrude beyond the side of the filter. This reduces the size of the holder while ensuring normal use, enabling miniaturization of the camera module. Furthermore, by incorporating a clearance structure on the holder, a clearance space is created for the gold wires, facilitating their arrangement and ensuring stable use. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the structure of the filter support assembly provided in the embodiments of this application.

[0025] Figure 2 yes Figure 1 An exploded view of the filter support assembly shown.

[0026] Figure 3 yes Figure 2 The bracket shown is a cross-sectional view along line III-III.

[0027] Figure 4 This is an exploded view of the camera module provided in the embodiments of this application.

[0028] Explanation of main component symbols: camera module 1, filter bracket assembly 100, bracket 10, first surface 11, second surface 12, outer surface 13, light-transmitting hole 14, inner surface 15, clearance structure 16, protrusion 17, filter 20, first colloid 30, second colloid 40, vent hole 41, protrusion 42, circuit board 200, photosensitive chip 300, gold wire 400. Detailed Implementation

[0029] The embodiments of this application are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this application, and should not be construed as limiting this application.

[0030] In the description of this application, it should be understood that the terms indicating orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more of the stated features. In the description of this application, it should be noted that "a plurality of" means two or more, unless otherwise explicitly specified.

[0031] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the term "connection" should be interpreted broadly. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or a connection that allows communication between the two components; it can be a direct connection or an indirect connection through an intermediate medium; it can be the internal communication between two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0032] The following will describe some embodiments of this application in detail with reference to the accompanying drawings.

[0033] Please see Figure 1 This application provides a filter holder assembly 100. The filter holder assembly 100 includes a holder 10 and a filter 20.

[0034] Please refer to the above. Figure 2 and Figure 3 The bracket 10 has a first surface 11, a second surface 12 opposite to the first surface 11, an outer surface 13 connecting the first surface 11 and the second surface 12, and a light-transmitting hole 14 penetrating the first surface 11 and the second surface 12. In this embodiment, the bracket 10 is generally rectangular, and the light-transmitting hole 14 is generally rectangular. Understandably, in other embodiments, the bracket 10 may also be generally circular, elliptical, or other shaped, and the light-transmitting hole 14 may also be circular, elliptical, or other shaped. The bracket 10 forms an inner surface 15 connecting the first surface 11 and the second surface 12 by providing the light-transmitting hole 14. The bracket 10 is made by liquid metal molding, such as injection molding, 3D printing, die casting, etc. The bracket 10 is provided with a clearance structure 16, which extends from the second surface 12 to the inner surface 15. The clearance structure 16 is configured to align with the gold wire 400 (see [link to relevant documentation]). Figure 4The bracket 10 is integrally formed using processes such as liquid metal injection molding and die casting. The clearance structure 16 can be formed during the forming process or machined onto the bracket 10 after its formation. A filter 20 is disposed on the first surface 11. Along a direction parallel to the first surface 11, the outer side surface 13 of the bracket 10 protrudes relative to the side surface of the filter 20, and a preset distance is provided between the outer side surface 13 of the bracket 10 and the side surface of the filter 20. The filter 20 can be an infrared filter, an infrared cut-off filter, or other filters.

[0035] In this embodiment, the clearance structure 16 is provided on the two short sides of the bracket 10, and a portion of the clearance structure 16 extends to the two long sides of the bracket 10. It can be understood that in other embodiments, the clearance structure 16 may also be provided on all four sides of the bracket 10, or partially provided on one of the short sides and partially provided on one of the long sides. The specific configuration can be determined according to the actual situation, and this application embodiment does not impose any specific limitations on this.

[0036] In this embodiment, the preset distance ranges from 0.07mm to 0.15mm. Preferably, it is 0.11mm. Understandably, in other embodiments, the preset distance can also be 0.07mm, 0.075mm, 0.08mm, 0.085mm, 0.09mm, 0.095mm, 0.1mm, 0.105mm, 0.115mm, 0.12mm, 0.125mm, 0.13mm, 0.135mm, 0.14mm, 0.145mm, 0.15mm, etc. Thus, by limiting the range of the preset distance, the difference between the support 10 and the filter 20 is ensured to be within a reasonable range, thereby reducing the size of the support 10 while maintaining its structural strength. When the preset distance is less than 0.07mm, the difference between the bracket 10 and the filter 20 is too small, which is not conducive to ensuring the structural strength of the bracket 10; when the preset distance is greater than 0.15mm, the difference between the bracket 10 and the filter 20 is too large, resulting in a larger size of the bracket 10, which is not conducive to reducing the size of the bracket 10. Understandably, the width and thickness of each side of the bracket 10 can be 0.5mm and 0.35mm, respectively.

[0037] In this embodiment, the liquid metal can be an amorphous zirconium alloy. Thus, by limiting the specific material of the liquid metal to an amorphous zirconium alloy, it is beneficial to meet the requirements of the support for high strength, high hardness, high elasticity, excellent thermal conductivity, and corrosion resistance.

[0038] This application embodiment limits the support 10 to be formed from liquid metal, such as injection molding, 3D printing, or die casting. Firstly, liquid metal is close to net-shape forming in its molding process, enabling high-precision manufacturing of complex structures through injection molding and die casting, reducing post-processing requirements, lowering production costs and processing difficulty. The shrinkage rate of liquid metal is controllable and has good repeatability, ensuring the consistency and stability of the support 10's molding, which is beneficial for large-scale production and improves the flexibility of the support 10's dimensions. Secondly, liquid metal possesses high strength (more than 5 times that of conventional aluminum-magnesium alloys and 3 times that of stainless steel), high hardness (Vickers hardness 480HV~520HV), and high elasticity (elastic deformation 10 times that of stainless steel), effectively protecting components inside the support 10, such as the photosensitive chip 300 (see [link to relevant documentation]). Figure 4 To prevent damage caused by external impacts and maintain structural stability during long-term use, the support 10 has several advantages. Firstly, the low shrinkage rate and high-precision molding capability of liquid metal make it suitable for manufacturing complex structures. Liquid metal die-casting avoids the breakage problems that occur with traditional materials (such as stainless steel) during processing, ensuring the dimensional accuracy and consistency of the support 10. Secondly, the high thermal conductivity of liquid metal helps to quickly conduct heat generated by components such as the image sensor 300, preventing image quality degradation due to high temperatures. The liquid properties of liquid metal result in less resistance during lens movement, not affecting optical image stabilization and autofocus functions. It also ensures good sealing to prevent leakage and improves the image quality of the camera module 1 (see [link to relevant documentation]). Figure 4 Fifthly, the density of liquid metal is lower than that of traditional materials such as copper and stainless steel, which can reduce the weight of bracket 10 while ensuring the structural strength of bracket 10. In addition, the excellent corrosion resistance of liquid metal makes it suitable for use in complex environments, which is conducive to extending the service life of camera module 1. The smooth surface of liquid metal is conducive to improving the texture of bracket 10.

[0039] The filter holder assembly 100 of this embodiment is made of liquid metal, such as injection molding, 3D printing, or die casting. Liquid metal has a low density, which reduces the weight of the holder 10 while ensuring its structural strength, thus ensuring the stability of the filter holder assembly 100. Liquid metal is close to net-shape forming in its molding process, which is beneficial for achieving high-precision manufacturing of complex structures through injection molding, 3D printing, and die casting, reducing post-processing requirements, production costs, and processing difficulty. The shrinkage rate of liquid metal is low, and its repeatability is good, which helps ensure the consistency and stability of the holder 10's molding. This allows the outer surface 13 of the holder 10 to protrude from the side of the filter 20, reducing the size of the holder 10 while ensuring its normal use, which is beneficial for miniaturizing the camera module 1. By providing a clearance structure 16 on the holder 10, the clearance structure 16 forms clearance space for the gold wire 400, which facilitates the arrangement of the gold wire 400 and ensures its stable use. In addition, the high strength and good formability of liquid metal enable it to meet the requirements of a compact and lightweight camera module 1, further satisfying the needs of miniaturization and portability of terminal devices; the low density of liquid metal helps to reduce the weight of camera module 1 and improve the overall portability of terminal devices.

[0040] In this embodiment, the filter holder assembly 100 further includes a first adhesive 30. The first adhesive 30 is bonded between the first surface 11 and the filter 20. The first adhesive 30 has a ring-shaped structure, and its cross-sectional area is smaller than that of the filter 20. The first adhesive 30 can be a UV adhesive or a BG adhesive. Thus, by providing the first adhesive 30, a stable connection is achieved between the holder 10 and the filter 20, ensuring the structural strength of the filter holder assembly 100.

[0041] In this embodiment, the filter holder assembly 100 further includes a second adhesive 40. One side of the second adhesive 40 is bonded to the second surface 12, and the other side of the second adhesive 40 is bonded to the circuit board 200 (see [link to documentation]). Figure 4 The second adhesive 40 has a ring-shaped structure and can be LHA adhesive. One end of the gold wire 400 is connected to the circuit board 200, and the other end is connected to the photosensitive chip 300. The photosensitive chip 300 is electrically connected to the circuit board 200. The gold wire 400 passes through the relief structure 16, thereby ensuring that the gold wire 400 is not compressed by external forces and extending its service life. In this way, by setting the second adhesive 40, the bracket 10 and the circuit board 200 are stably connected.

[0042] In this embodiment, an vent hole 41, recessed from the inside out, is provided on one side of the second colloid 40. Specifically, a protruding portion 42 protrudes from one side of the second colloid 40, and the vent hole 41 extends to the protruding portion 42, so that the vent hole 41 can be offset from the outer surface 13 of the bracket 10 and the continuity of the structure of the second colloid 40 is maintained, thereby allowing air to circulate inside and outside the closed space enclosed by the filter 20, the bracket 10, and the circuit board 200. Thus, by providing an vent hole 41 on the second colloid 40, the vent hole 41 allows air to circulate inside and outside the closed space enclosed by the filter 20, the bracket 10, and the circuit board 200. When the filter bracket assembly 100 is applied in the camera module 1, it can ensure that the positive and negative pressures within the closed space enclosed by the filter 20, the bracket 10, and the circuit board 200 remain balanced, avoiding damage to other components due to unstable positive and negative pressures. In addition, an air vent 41 is opened on the second colloid 40 to avoid openings in structures such as the bracket 10 and the circuit board 200, which helps to ensure the strength of structures such as the bracket 10 and the circuit board 200.

[0043] Understandably, in other embodiments, at least one of the first colloid 30 and the second colloid 40 can be a waterproof and breathable adhesive, specifically a silicone sealant. By setting at least one of the first colloid 30 and the second colloid 40 to be a waterproof and breathable adhesive, the waterproof and breathable adhesive allows air to circulate inside and outside the filter support assembly 100. Thus, the vent hole 41 on the second colloid 40 can be omitted.

[0044] In this embodiment, at least one protrusion 17 extending away from the inner side 15 is provided on the outer side 13 of the bracket 10. Specifically, one and two protrusions 17 are respectively provided on the two long sides of the bracket 10. Thus, by providing the above-mentioned protrusions 17, the structural strength of the bracket 10 is improved. It is understood that in other embodiments, the number of protrusions 17 may be more or less, and their number and placement can be set according to the actual situation.

[0045] In this embodiment, the first surface 11, the second surface 12, the outer surface 13, and the inner surface 15 of the bracket 10 are coated with PVD films. For example, the first surface 11, the second surface 12, the outer surface 13, and the inner surface 15 of the bracket 10 are all treated with super black or black coating. In this way, by limiting the first surface 11, the second surface 12, the outer surface 13, and the inner surface 15 to have PVD films, the reflectivity of the bracket 10 is reduced, so that the reflectivity of the bracket 10 for light with wavelengths in the range of 430nm to 680nm can reach less than 3.0%.

[0046] In this embodiment, the avoidance structure 16 is an inclined surface connecting the second surface 12 and the inner surface 15. It is understood that in other embodiments, the avoidance structure 16 can also be an arc surface or a stepped surface, with the arc surface preferably being a concave arc surface. Thus, by defining the specific surface shape of the avoidance structure 16, an avoidance is formed for the gold wire 400.

[0047] Please see Figure 4 This application also provides a camera module 1. The camera module 1 includes the filter bracket assembly 100 as described in the above embodiment. In this embodiment, the camera module 1 further includes a circuit board 200, a photosensitive chip 300, and a gold wire 400. The circuit board 200 is connected to the other side of the second colloid 40. The photosensitive chip 300 is disposed on the side of the circuit board 200 facing the filter 20 and located in the light-transmitting hole 14 of the bracket 10. The two ends of the gold wire 400 are respectively connected to the photosensitive chip 300 and the circuit board 200 and pass through the clearance structure 16 of the bracket 10.

[0048] In this embodiment, the camera module 1 uses a filter support assembly 100. The support 10 is made of liquid metal, such as through injection molding, 3D printing, or die casting. Liquid metal has a low density, which reduces the weight of the support 10 while maintaining its structural strength, thus ensuring the stability of the filter support assembly 100. Liquid metal's near-net-shape forming process facilitates high-precision manufacturing of complex structures through injection molding, 3D printing, and die casting, reducing post-processing requirements, production costs, and processing difficulty. The low shrinkage rate and good repeatability of liquid metal help ensure the consistency and stability of the support 10's molding, allowing the outer surface 13 of the support 10 to protrude beyond the side of the filter 20. This reduces the size of the support 10 while ensuring its normal use, enabling a miniaturized design for the camera module 1. By providing a clearance structure 16 on the support 10, which forms clearance space for the gold wire 400, the arrangement of the gold wire 400 is facilitated, ensuring its stable use. In addition, the high strength and good formability of liquid metal enable it to meet the requirements of a compact and lightweight camera module 1, further satisfying the needs of miniaturization and portability of terminal devices; the low density of liquid metal helps to reduce the weight of camera module 1 and improve the overall portability of terminal devices.

[0049] This application also provides a terminal device (not shown in the figures). The terminal device includes the camera module 1 described in the above embodiments. The terminal device includes, but is not limited to, mobile phones, tablets, smartwatches, robot vacuum cleaners, drones, vehicle-mounted cameras, VR devices, AR devices, or other devices with camera functions.

[0050] In this embodiment of the terminal device, the filter support assembly 100 of the camera module 1 is made of liquid metal, such as through injection molding, 3D printing, or die casting. Liquid metal has a low density, which reduces the weight of the support 10 while maintaining its structural strength, thus ensuring the stability of the filter support assembly 100. Liquid metal is close to net-shape forming in its molding process, which is beneficial for achieving high-precision manufacturing of complex structures through injection molding, 3D printing, and die casting, reducing post-processing requirements, production costs, and processing difficulty. The shrinkage rate of liquid metal is also good, with good repeatability, which helps ensure the consistency and stability of the support 10's molding. This allows the outer surface 13 of the support 10 to protrude from the side of the filter 20, reducing the size of the support 10 while ensuring its normal use, thus enabling a miniaturized design of the camera module 1. By providing a clearance structure 16 on the support 10, the clearance structure 16 forms clearance space for the gold wire 400, which facilitates the arrangement of the gold wire 400 and ensures its stable use. In addition, the high strength and good formability of liquid metal enable it to meet the requirements of a compact and lightweight camera module 1, further satisfying the needs of miniaturization and portability of terminal devices; the low density of liquid metal helps to reduce the weight of camera module 1 and improve the overall portability of terminal devices.

[0051] It will be apparent to those skilled in the art that this application is not limited to the details of the exemplary embodiments described above, and that this application can be implemented in other specific forms without departing from the spirit or essential characteristics of this application. Therefore, the embodiments should be regarded as exemplary and non-limiting in all respects, and the scope of this application is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be embraced within this application.

[0052] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application and are not intended to limit it. Although this application has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this application without departing from the spirit and scope of the technical solutions of this application.

Claims

1. A filter holder assembly, characterized in that, Includes support frame and filter; The bracket has a first surface, a second surface opposite to the first surface, an outer surface connecting the first surface and the second surface, and a light-transmitting hole penetrating the first surface and the second surface. The bracket has an inner surface connecting the first surface and the second surface. The bracket is made of liquid metal molding. The bracket is provided with a clearance structure that extends from the second surface to the inner surface. The clearance structure is configured to clearance the gold wire. The filter is disposed on the first surface. Along a direction parallel to the first surface, the outer side of the bracket protrudes from the side of the filter, and a preset distance is provided between the outer side of the bracket and the side of the filter.

2. The filter holder assembly as described in claim 1, characterized in that, The filter support assembly further includes a first colloid, which is bonded between the first surface and the filter, and the first colloid has a ring-shaped structure.

3. The filter holder assembly as described in claim 1, characterized in that, The filter support assembly further includes a second colloid, one side of which is bonded to the second surface, and the other side of which is bonded to the circuit board. The second colloid has a ring-shaped structure. One end of the gold wire is connected to the circuit board, and the other end of the gold wire is connected to the photosensitive chip. The gold wire passes through the clearance structure.

4. The filter holder assembly as described in claim 3, characterized in that, An air vent is provided on one side of the second colloid, which is recessed from the inside out.

5. The filter holder assembly as described in claim 1, characterized in that, The outer side of the bracket is provided with at least one protrusion extending away from the inner side; and / or, the first side, the second side, the outer side and the inner side of the bracket are provided with PVD coating.

6. The filter holder assembly as described in claim 1, characterized in that, The preset distance ranges from 0.07mm to 0.15mm.

7. The filter holder assembly as described in claim 1, characterized in that, The liquid metal is an amorphous zirconium alloy.

8. The filter holder assembly as described in claim 1, characterized in that, The avoidance structure is an inclined surface, an arc surface, or a stepped surface connecting the second surface and the inner surface.

9. A camera module, characterized in that, Includes the filter holder assembly as described in any one of claims 1 to 8.

10. A terminal device, characterized in that, Includes the camera module as described in claim 9.

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