CN213783405U

CN213783405U - Camera module and electronic equipment with same

Info

Publication number: CN213783405U
Application number: CN202022634234.5U
Authority: CN
Inventors: 潘兵
Original assignee: Nanchang OFilm Optoelectronics Technology Co Ltd
Current assignee: Nanchang OFilm Tech Co Ltd; Nanchang OFilm Optoelectronics Technology Co Ltd
Priority date: 2020-11-13
Filing date: 2020-11-13
Publication date: 2021-07-23
Anticipated expiration: 2030-11-13

Abstract

The utility model discloses a camera module and have its electronic equipment, the camera module includes: a camera assembly; the camera assembly is arranged on the circuit board, and a through hole is formed in the circuit board; the heat conduction coefficient of the reinforcing sheet is greater than 250W/m.DEG C, and the reinforcing sheet is arranged on the surface of one side of the circuit board, which is back to the camera assembly; and the sensor is arranged on one side surface of the reinforcing sheet facing the circuit board, and the sensor is accommodated in the through hole. Through set up the through-hole on the circuit board at camera module, the sensor holds in the through-hole, not only can reduce camera module's height, and the heat of sensor still can outwards disperse through the reinforcement piece, promotes the radiating effect.

Description

Camera module and electronic equipment with same

Technical Field

The utility model belongs to the technical field of the camera module heat dissipation technique and specifically relates to a camera module and have its electronic equipment is related to.

Background

In the related art, the existing camera module is mainly assembled by a circuit board (FPC), a Sensor (Sensor), a socket, a Voice Coil Motor (VCM), and a Lens (Lens). The heat that the camera module during operation produced is mainly produced by Sensor (Sensor), and Sensor (Sensor) is encapsulated inside the module completely, and the heat dissipation route is restricted, mainly transmits the heat to the branch + IR through the air and dispels the heat to the external world, also dispels the heat to the external world through contacting with the circuit board with partial heat, and the coefficient of heat conductivity of air, circuit board is low, leads to the radiating effect poor.

SUMMERY OF THE UTILITY MODEL

The utility model discloses aim at solving one of the technical problem that exists among the prior art at least. Therefore, the utility model provides a camera module to promote the radiating effect.

Another object of the present invention is to provide an electronic device having the camera module of the above embodiment.

According to the utility model discloses a camera module, include: a camera assembly; the camera assembly is arranged on the circuit board, and a through hole is formed in the circuit board; the heat conduction coefficient of the reinforcing sheet is greater than 250W/m.DEG C, and the reinforcing sheet is arranged on the surface of one side of the circuit board, which is back to the camera assembly; and the sensor is arranged on one side surface of the reinforcing sheet facing the circuit board, and the sensor is accommodated in the through hole.

According to the utility model discloses camera module, through set up the through-hole on the circuit board, the sensor holds in the through-hole, not only can reduce camera module's height, the heat of sensor still can outwards disperse through the reinforcement piece, and the sensor is directly established on the reinforcement piece in addition, and the coefficient of heat conductivity of reinforcement piece is greater than 250W/m.

Additionally, according to the utility model discloses a camera module can also have following additional technical characterstic:

in some embodiments of the present invention, the reinforcing sheet comprises: the heat dissipation body piece comprises a first surface, a second surface opposite to the first surface and a side surface connecting the first surface and the second surface; and the corrosion-resistant layers are arranged on the first surface, the second surface and the side surface of the heat dissipation body piece and are corrosion-resistant material pieces. Therefore, the reinforcing sheet is not easy to be corroded and oxidized, and the service life can be prolonged.

In some embodiments of the present invention, the thickness of the heat dissipation body member is t1, and t1 satisfies: t1 is not less than 0.05mm and not more than 5 mm. Therefore, the heat dissipation body piece of the reinforcing plate can be set to different thicknesses according to actual use requirements.

In some embodiments of the present invention, the corrosion-resistant layer has a thickness of t2, and t2 satisfies: t2 is more than or equal to 1 μm. Thus, the corrosion resistance of the reinforcing sheet can be ensured.

In some embodiments of the present invention, the heat dissipating body member is copper and the corrosion resistant material member is nickel, palladium, or gold. From this, the body spare that dispels the heat has better heat absorption effect, promotes the cooling effect to the sensor. The material of the corrosion-resistant layer can be nickel, palladium or gold, and the corrosion resistance of the reinforcing plate to external substances can be effectively improved.

Optionally, the corrosion-resistant layer is an electroplated layer. Therefore, the uniformity of the corrosion-resistant material can be ensured, and the surface of the heat dissipation body piece is not easy to omit.

Specifically, the sensor and the circuit board are respectively connected to the reinforcing sheet by gluing. Therefore, the connection is fast and reliable.

In some embodiments of the present invention, the stiffening sheet is formed as a flat plate. Therefore, the reinforcing sheet is simple in structure and low in processing cost.

In other embodiments, the reinforcing sheet includes a flat plate portion and a protruding portion disposed on the flat plate portion and close to the surface of the circuit board, the protruding portion is disposed opposite to the through hole, and the sensor is disposed on the protruding portion. Therefore, the bulge part can be convenient for assembling with the circuit board on one hand, and is convenient for surface processing of the joint of the reinforcing sheet and the sensor on the other hand.

According to the utility model discloses an electronic equipment has the camera module of above-mentioned embodiment.

According to the utility model discloses electronic equipment through the camera module that is equipped with above-mentioned embodiment, sets up the through-hole on the circuit board, and the sensor holds in the through-hole, not only can reduce the height of camera module, and the heat of sensor still can outwards disperse through the reinforcement piece, can effectually cool down to the sensor. And then guaranteed the electronic equipment who has the camera module of above-mentioned embodiment, inside electron device has better radiating effect.

Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

fig. 1 is an exploded view of a camera module according to an embodiment of the present invention;

fig. 2 is a schematic structural diagram of a reinforcing sheet of a camera module according to an embodiment of the present invention;

fig. 3 is a schematic structural diagram of another reinforcing sheet of the camera module according to the embodiment of the present invention.

Reference numerals:

a camera module 100;

a camera assembly 1; a lens 11; a drive device 12; a bracket 13; an optical filter 14;

a circuit board 2; a through hole 21;

a reinforcing sheet 3; heat dissipation body member 31; a flat plate portion 32; the convex portion 33;

a sensor 4.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present invention, and should not be construed as limiting the present invention.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", and the like, indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention. Furthermore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

The camera module 100 according to the embodiment of the present invention is described below with reference to fig. 1, and a camera module 100 includes: camera assembly 1, circuit board 2, reinforcement piece 3 and sensor 4. As shown in fig. 1, the camera module 1 is provided on a wiring board 2, and a through hole 21 is formed on the wiring board 2.

As shown in fig. 1, the reinforcing sheet 3 is a heat dissipating material, the thermal conductivity of the reinforcing sheet 3 is greater than 250W/m · c, and the thermal conductivity of the reinforcing sheet 3 is higher than that of a general aluminum material or steel material. The reinforcing sheet 3 is arranged on the surface of one side of the circuit board 2, which faces away from the camera assembly 1, and the reinforcing sheet 3 can improve the overall strength of the camera module 100 and can play a role in heat dissipation.

As shown in fig. 1, the sensor 4 is provided on the surface of the reinforcing sheet 3 on the side facing the wiring board 2, and the sensor 4 is accommodated in the through hole 21. Place sensor 4 in circuit board 2, changed prior art on the sensor directly sets up on the surface of the orientation camera subassembly of circuit board, can reduce camera module 100's overall height. When the camera module 100 is used, the sensor 4 generates heat, so that the heat dissipation capability of the reinforcing sheet 3 is high, and the heat can be absorbed by the reinforcing sheet 3 and dissipated outwards through the reinforcing sheet 3. Especially when sensor 4 contacts with stiffening plate 3, the bigger area of contact is, the better heat absorption ability of stiffening plate 3 to sensor 4 is, can effectively guarantee sensor 4's stable use.

According to the utility model discloses camera module 100, through set up through-hole 21 on circuit board 2, sensor 4 holds in through-hole 21, can reduce camera module 100's height, and circuit board 2 is provided with reinforcement piece 3 in the one side of keeping away from camera subassembly 1 in addition, and sensor 4's heat still can outwards disperse through reinforcement piece 3. And sensor 4 is directly established on reinforcement piece 3, and sensor 4 heat can be directly, high-efficiently conducted away through reinforcement piece 3, rather than only conducting heat through circuit board 2 is indirect to can promote the cooling effect to sensor 4.

As shown in fig. 1, the reinforcing sheet 3 includes: the heat dissipation body member 31 includes a first surface, a second surface opposite to the first surface, and a side surface connecting the first surface and the second surface. The reinforcing sheet 3 further includes corrosion-resistant layers provided on the first surface, the second surface, and the side surfaces of the heat dissipation body member 31, the corrosion-resistant layers being corrosion-resistant material members. Thus, the reinforcing sheet 3 is less susceptible to corrosion and oxidation, and the service life can be prolonged.

Specifically, the heat conductivity coefficient of the heat dissipation body member 31 is greater than the heat conductivity coefficient of the corrosion-resistant layer, the heat dissipation body member 31 mainly plays a role in supporting and heat dissipation, and the corrosion-resistant layer mainly plays a role in protection. Since the heat dissipation body member 31 needs to be subjected to a certain surface treatment, and because of the provision of the corrosion-resistant layer, the heat conductivity coefficient of the heat dissipation body member 31 is required to be higher than that of the reinforcing sheet 3.

Moreover, the first surface and the second surface of the heat dissipation body member 31 may refer to the upper surface and the lower surface of the heat dissipation body member 31, the connection position between the first surface and the second surface may be the side surface of the heat dissipation body member 31, and the corrosion-resistant layer is disposed on the first surface, the second surface and the side surface of the heat dissipation body member 31, so that the overall corrosion resistance of the heat dissipation body member 31 can be effectively improved.

Optionally, the heat conductivity coefficient of the heat dissipation body member 31 is greater than 300W/m · c, so as to significantly increase the heat dissipation speed and improve the operation stability of the sensor 4. In some embodiments, the heat conductivity of the heat dissipating body 31 can reach about 360W/m ° c, and the heat dissipating device has good use effect and heat dissipating effect.

The surface of the heat dissipation body member 31 is provided with a corrosion-resistant layer, so that the reinforcing plate can be prevented from being corroded by external substances when in use, thereby realizing the long-term use of the reinforcing sheet 3 and prolonging the service life of the reinforcing sheet 3. It should be noted that the outer surface of the reinforcing sheet 3 includes not only two surfaces in the thickness direction of the reinforcing sheet 3 but also the surfaces around the reinforcing sheet 3, that is, the circumferential surface of the reinforcing sheet 3, and thus the corrosion resistance of the reinforcing sheet 3 can be improved.

Alternatively, the corrosion-resistant layer is an electroplated layer, that is, a corrosion-resistant material is electroplated on the surface of the heat dissipation body member 31, so that the uniformity of the corrosion-resistant material can be ensured, the surface of the heat dissipation body member 31 is not easy to be missed, and the protection effect of the corrosion-resistant layer can be ensured.

Further, the thickness of the heat dissipation body member 31 is t1, and t1 satisfies: t1 is not less than 0.05mm and not more than 5 mm. By setting different thicknesses of the heat dissipation body member 31, the heat dissipation body member 31 with different thicknesses can be set according to different use environments and use conditions, so that the heat dissipation body member 31 of the reinforcing plate can be set with different thicknesses according to actual use requirements.

Further, the corrosion-resistant layer has a thickness t2, and t2 satisfies: t2 is more than or equal to 1 μm. By setting the thickness of the corrosion-resistant layer to at least 1 μm, the corrosion-resistant performance of the reinforcing sheet 3 can be ensured, and the service life of the reinforcing sheet 3 can be prolonged.

Optionally, heat dissipation body spare 31 is red copper, and red copper's coefficient of heat conductivity is high, can reach 300W/m. ° C at least, and from this can know, red copper can have better heat absorption effect, and then can realize the thermal a large amount of absorption to sensor 4, promote the cooling effect to sensor 4. It can be understood that the red copper used as the base material has different types, some red copper materials are deoxidized, some red copper materials are added with a small amount of alloy elements, and the heat conductivity coefficients of the red copper of different types are slightly different.

Specifically, the red copper processing material is divided into the following components: common red copper (T1, T2 and T3), oxygen-free copper (TU1 and TU2 and high-purity and vacuum oxygen-free copper), deoxidized copper (TUP and TUMn), and special copper (arsenic copper, tellurium copper and silver copper) added with a small amount of alloy elements. Table 1 below shows the relevant physical properties of the red copper materials of different national standards. Generally speaking, no matter which type is selected, the heat conductivity coefficient of the heat dissipation body member 31 can be ensured to reach more than 300W/m.

TABLE 1

Optionally, the piece of corrosion resistant material is nickel, palladium, or gold. The material of the corrosion-resistant layer can be nickel, palladium or gold, and the corrosion resistance of the reinforcing plate to external substances can be effectively improved.

The material used in the coating process of the corrosion-resistant layer provided outside the reinforcing sheet 3 is not limited to nickel plating, and the surface treatment processes commonly used in the market at present include: nickel plating, palladium plating, gold plating, nickel palladium gold, gold plating, nickel plating, vacuum plating (vacuum sputtering process), palladium black process (like black nickel process), and the like.

Still have technologies such as nickel plating, palladium plating, gilding, nickel-palladium plating, nickel palladium gold, change nickel, vacuum coating (vacuum sputtering technology), palladium black technology (similar black nickel technology) to red copper surface treatment mode, consequently to preparation the embodiment of the utility model provides an in the method process of reinforcement piece 3, can choose for use multiple material to go on to the cladding material technology on reinforcement piece 3 surface.

Optionally, the circuit board 2 is connected to the reinforcing sheet 3 by gluing to form an integral structure, which not only has convenient assembly and reliable connection, but also has strong impact resistance and vibration resistance.

Optionally, the sensor 4 is connected to the reinforcing sheet 3 by gluing, so that the assembly is convenient, the connection is reliable, and the shock resistance and the vibration resistance are strong.

In some embodiments, as shown in fig. 2, the reinforcing plate 3 is formed as a flat plate 32, that is, the overall shape of the reinforcing plate 3 is a single flat plate 32, so that the reinforcing plate 3 has a simple structure and is low in processing cost.

In other embodiments, as shown in fig. 3, the reinforcing sheet 3 includes a flat plate portion 32 and a protrusion 33 disposed on a surface of the flat plate portion 32 close to the circuit board 2, the protrusion 33 is disposed opposite to the through hole 21 and at least partially received in the through hole 21, and the sensor 4 is disposed on the protrusion 33.

As shown in fig. 3, the reinforcing sheet 3 may have a flat plate portion 32, a protruding portion 33 may be provided on the flat plate portion 32, and the protruding portion 33 may be connected to the sensor 4 through the through hole 21 of the circuit board 2. The protrusion 33 is provided so that when the reinforcing sheet 3 is fitted to the circuit board 2, the protrusion 33 can be directly inserted into the through hole 21 of the circuit board 2, i.e., the protrusion 33 serves to facilitate positioning. In the scheme of this application, sensor 4 needs to paste on reinforcement 3, through setting up bellying 33, can carry out deep-processing to bellying 33 surface, and processing bellying 33 surface is compared in processing whole reinforcement 3 and is far more easy this moment, therefore the setting of bellying 33 also makes things convenient for the deep-processing with sensor 4 binding face.

According to the utility model discloses circuit board 2 in the camera module 100 is soft board, hardboard, or rigid-flex board. Therefore, the circuit board 2 can be formed in various forms, so that the circuit board 2 can meet various use environments and use requirements.

According to the utility model discloses camera module 100, camera subassembly 1 includes: a lens 11, a driving device 12, a bracket 13 and a filter 14. The driving device 12 is used for driving the lens 11 to move along the central axis direction of the lens 11, and the driving device 12 is also used for driving the lens 11 to move along the direction perpendicular to the central axis direction of the lens 11. The drive device 12 is arranged on a support 13, which support 13 is arranged on the circuit board 2. The bracket 13 is arranged on the line, so that the bracket 13 can stably support the driving device 12, further, the driving device 12 can drive the lens 11 to shoot a picture, and the lens 11 can adjust the distance of a shot object. The filter 14 is disposed on the holder 13 between the lens 11 and the sensor 4.

Further, the driving device 12 is a VCM motor. The VCM motor can stably drive the lens 11, and the lens can automatically adjust the distance of an object to be shot.

According to the utility model discloses an electronic equipment, including the camera module 100 of above-mentioned embodiment.

According to the utility model discloses electronic equipment, through the camera module 100 that is equipped with above-mentioned embodiment, can realize the thermal absorption to the sensor 4 production in the camera module 100 through reinforcement piece 3, effectually cool down sensor 4. Be equipped with through-hole 21 on circuit board 2, can make sensor 4 contact through-hole 21 and reinforcement piece 3, can effectually reduce camera module 100's whole height from this, be favorable to reducing electronic equipment's size.

The present invention is not limited to this, in the camera module 100 of the embodiment of the present invention, a method of preparing the reinforcing sheet 3 in the camera module 100 of the above-mentioned embodiment may be further involved, and to the existing preparation method of the reinforcing sheet 3, the existing preparation method of the reinforcing sheet 3 is coil → electronickelling → etching → laminating → secondary etching → detection packaging. In the preparation process, etching and cutting are carried out after electroplating, so that the side edge of the cut reinforcing sheet 3 is exposed out of the base material body and is not protected by nickel plating. However, the conventional reinforcing sheet 3 is mostly made of stainless steel, and stainless steel is not easily oxidized and corroded due to the characteristics of the base material, so that the side edge can be directly used as the reinforcing sheet 3 of the circuit board 2 without plating nickel.

In the present application, the reinforcing sheet 3 is made of red copper or other materials with higher thermal conductivity, and the corrosion resistance is poor relative to the stainless steel material, so the utility model provides a method for preparing the reinforcing sheet 3 of the camera module 100 of the above embodiment, namely, coil material → nickel electroplating → etching → laminating → secondary etching → nickel electroplating/chemical nickel plating → cleaning → detection packaging. And secondary nickel plating is performed after secondary etching, so that the side edge exposed by etching can be coated with a film after the nickel plating after the reinforcing sheet 3 is etched, the overall corrosion resistance is improved, and the corrosion resistance of the reinforcing sheet 3 is improved.

In addition, to the global design of camera module 100, wherein sensor 4 can directly be carried on reinforcement piece 3 through DA gluey, from this through DA gluey can be effectual with the heat transfer that sensor 4 produced to reinforcement piece 3 on, make reinforcement piece 3 can be with the heat absorption of sensor 4 to realize the cooling to sensor 4. Contrast stainless steel reinforcement steel sheet, test under the same condition, the utility model discloses camera module 100's temperature can reduce more than 5 ℃ at least.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples" or the like mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

While embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims

1. The utility model provides a camera module which characterized in that includes:

a camera assembly;

the camera assembly is arranged on the circuit board, and a through hole is formed in the circuit board;

the heat conduction coefficient of the reinforcing sheet is greater than 250W/m.DEG C, and the reinforcing sheet is arranged on the surface of one side of the circuit board, which is back to the camera assembly;

and the sensor is arranged on one side surface of the reinforcing sheet facing the circuit board, and the sensor is accommodated in the through hole.

2. The camera module of claim 1, wherein the stiffener comprises:

the heat dissipation body piece comprises a first surface, a second surface opposite to the first surface and a side surface connecting the first surface and the second surface;

and the corrosion-resistant layers are arranged on the first surface, the second surface and the side surface of the heat dissipation body piece and are corrosion-resistant material pieces.

3. The camera module of claim 2, wherein the thickness of the heat dissipating body member is t1, and t1 satisfies: t1 is not less than 0.05mm and not more than 5 mm.

4. The camera module of claim 2, wherein the corrosion-resistant layer has a thickness t2, and t2 satisfies: t2 is more than or equal to 1 μm.

5. The camera module of claim 2, wherein the heat sink body member is copper and the corrosion resistant material member is nickel, palladium, or gold.

6. The camera module of claim 2, wherein the corrosion-resistant layer is an electroplated layer.

7. The camera module according to claim 1, wherein the sensor and the circuit board are respectively connected to the reinforcing sheet by gluing.

8. The camera module of claim 1, wherein the stiffener is formed as a flat plate.

9. The camera module of claim 1, wherein the stiffener comprises a flat plate portion and a protrusion portion disposed on the flat plate portion and adjacent to the surface of the circuit board, the protrusion portion is disposed opposite to the through hole, and the sensor is disposed on the protrusion portion.

10. An electronic device, characterized in that it comprises a camera module according to any one of claims 1-9.