CN220775981U

CN220775981U - Camera module and electronic equipment

Info

Publication number: CN220775981U
Application number: CN202321690770.4U
Authority: CN
Inventors: 曹攀; 张煜晨; 张海涛
Original assignee: Honor Device Co Ltd
Current assignee: Honor Device Co Ltd
Priority date: 2023-06-30
Filing date: 2023-06-30
Publication date: 2024-04-12
Anticipated expiration: 2033-06-30

Abstract

The application provides a camera module and electronic equipment, this electronic equipment includes: the camera shooting module comprises a substrate, a motor and a lens, wherein the motor and the lens are positioned on the substrate, and at least one grounding lug is formed on the side wall of the motor; the middle frame is provided with a circuit board, at least one grounding spring piece is arranged on the circuit board, one end of the grounding spring piece is electrically connected with a grounding wire or a grounding layer of the circuit board, and the other end of the grounding spring piece is in contact with and is electrically connected with the corresponding grounding lug. According to the method, the motor is directly connected with the terminal main board, so that the energy radiated to the module is released more quickly and more sufficiently, and the energy coupled to the mipi and IIC signals of the module is less, so that the capacity of the camera module for resisting antenna interference is improved.

Description

Camera module and electronic equipment

Technical Field

The application relates to the technical field of electronics, in particular to a camera module and electronic equipment.

Background

With the advent of the smart device age, terminal devices such as mobile phones are equipped with cameras to facilitate shooting, recording, and sharing by people. For the camera module of the terminal device, since the current terminal is usually equipped with various radio frequency antennas, such as 2G, 4G, 5G antennas, wifi antennas, bluetooth antennas, etc., and the camera module is very close to the antennas, and is easily affected by the radiation of the antennas to generate the problems of screen and blocking, the VCM (Voice Coil Motor) of the camera module needs better grounding effect to improve the anti-interference performance of the antenna and prevent the radiation of the antenna from interfering with the operation of the camera module. In the current VCM grounding scheme of the camera module of the terminal such as the mobile phone, the Digital Ground (DGND) connecting the VCM to the camera module substrate is commonly adopted, however, the antenna interference resistance of the scheme is poor in the whole machine state. When the antenna is in a high-power working scene, the energy radiated to the camera module cannot be discharged rapidly, and the mipi (mobile industry processor interface) and IIC (Inter-Integrated Circui) signals and the like of the camera module are easy to be interfered, so that the working state of the camera is striped or even blocked.

Disclosure of Invention

In order to solve the technical problem, the application provides a camera module and electronic equipment, which can make the energy radiated to the module discharged more quickly and sufficiently in a mode of directly connecting a motor to a terminal main board, so that the energy coupled to the mipi and IIC signals of the module is less, and the capacity of the camera module for resisting antenna interference is improved.

In a first aspect, the present application provides an electronic device, comprising:

the camera shooting module comprises a substrate, a motor and a lens, wherein the motor and the lens are positioned on the substrate, and at least one grounding lug is formed on the side wall of the motor;

the middle frame is provided with a circuit board, at least one grounding spring piece is arranged on the circuit board, one end of the grounding spring piece is electrically connected with a grounding wire or a grounding layer of the circuit board, and the other end of the grounding spring piece is in contact with and is electrically connected with the corresponding grounding lug.

According to the first aspect, the energy radiated to the module is released more quickly and sufficiently by directly connecting the motor to the main board of the terminal, so that the energy coupled to the mipi and IIC signals of the module is less, and the capacity of the camera module for resisting antenna interference is improved.

According to a first aspect, or any implementation manner of the first aspect, one of the grounding ears is formed on each of two adjacent side walls of the motor. Therefore, the motor can be effectively and directly connected with the terminal main board, so that the energy radiated to the module is discharged more quickly and sufficiently, the energy coupled to the mipi and IIC signals of the module is less, and the capacity of the camera module for resisting the antenna interference is improved.

According to the first aspect or any implementation manner of the first aspect, the length of the grounding lug is 4mm-5mm, the width is 2mm-3mm, and the thickness is 0.04mm-0.08mm. Thus, the energy radiating to the module is more quickly and fully discharged by being conveniently connected with the grounding spring plate.

According to a first aspect, or any implementation manner of the first aspect, the motor further includes a fixing bracket, and the fixing bracket is vertically mounted on the circuit board and is disposed around the motor. Thus, the motor can be further fixed, and the stress requirement of the motor is ensured.

According to a first aspect, or any implementation manner of the first aspect, the fixing support includes a frame and at least one connection portion disposed on the frame, and the connection portion is engaged with the corresponding grounding ear. Thus, the motor can be further fixed, and the stress requirement of the motor is ensured.

According to a first aspect, or any implementation manner of the first aspect, the frame includes four rims connected to each other, and each of two adjacent rims of the frame is provided with one connecting portion. Thus, the motor can be further fixed better, and the stress requirement of the motor is ensured.

According to a first aspect, or any implementation manner of the first aspect, the fixing bracket further includes at least one pressing portion provided on the frame, and the pressing portion presses on a corner position of the top of the motor. Thus, the motor can be further fixed better, and the stress requirement of the motor is ensured.

According to a first aspect, or any implementation manner of the first aspect, the frame includes four rims connected to each other, and the pressing portions are respectively disposed at two opposite corner positions of the frame. Thus, the motor can be further fixed better, and the stress requirement of the motor is ensured.

In a second aspect, the application provides an image capturing module, including a substrate, a motor and a lens disposed on the substrate, wherein at least one grounding lug is formed on a side wall of the motor.

According to the camera module of the second aspect, the grounding lug is arranged on the side wall of the motor to enable the camera module to be directly connected to the ground of the terminal main board through the grounding elastic piece, so that the interference electromagnetic wave generated during high-power transmission of the antenna is released in a grounding mode, the interference signal coupled to the main board of the camera module is sufficiently small and even is directly filtered, and the problem of signal interference of antenna radiation to the camera module is solved.

According to a second aspect, or any implementation manner of the second aspect, one of the grounding ears is formed on each of two adjacent side walls of the motor. Therefore, the motor can be effectively and directly connected with the terminal main board, so that the energy radiated to the module is discharged more quickly and sufficiently, the energy coupled to the mipi and IIC signals of the module is less, and the capacity of the camera module for resisting the antenna interference is improved.

Drawings

Fig. 1 is a schematic structural view of an electronic device exemplarily shown;

fig. 2 is a schematic structural diagram of an exemplary camera module;

fig. 3 is a schematic grounding diagram of an exemplary camera module;

FIG. 4 is a schematic structural diagram of an image capturing module according to an embodiment of the present application;

FIG. 5 is an assembly schematic of the camera module shown in FIG. 4 on a circuit board;

fig. 6 is a schematic structural view of a fixing bracket according to an embodiment of the present application.

Detailed Description

The following description of the embodiments of the present application will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are some, but not all, of the embodiments of the present application. All other embodiments, which can be made by one of ordinary skill in the art based on the embodiments herein without making any inventive effort, are intended to be within the scope of the present application.

The term "and/or" is herein merely an association relationship describing an associated object, meaning that there may be three relationships, e.g., a and/or B, may represent: a exists alone, A and B exist together, and B exists alone.

The terms first and second and the like in the description and in the claims of embodiments of the present application are used for distinguishing between different objects and not necessarily for describing a particular sequential order of objects. For example, the first target object and the second target object, etc., are used to distinguish between different target objects, and are not used to describe a particular order of target objects.

In the embodiments of the present application, words such as "exemplary" or "such as" are used to mean serving as examples, illustrations, or descriptions. Any embodiment or design described herein as "exemplary" or "for example" should not be construed as preferred or advantageous over other embodiments or designs. Rather, the use of words such as "exemplary" or "such as" is intended to present related concepts in a concrete fashion.

In the description of the embodiments of the present application, unless otherwise indicated, the meaning of "a plurality" means two or more. For example, the plurality of processing units refers to two or more processing units; the plurality of systems means two or more systems.

The embodiment of the application provides a terminal device, which can be an electronic device such as a mobile phone, a tablet personal computer, a personal digital assistant (personal digital assistant, PDA), a vehicle-mounted computer and the like, and is provided with a camera module and a wireless receiving and transmitting antenna. The embodiment of the application is not limited to the specific form of the electronic device. As shown in fig. 1, the following description will take a mobile phone as an example of the terminal device for convenience of description.

For the sake of clarity in describing the following structural features and the positional relationships of the structural features, the positional relationships of the structures in the mobile phone are specified in the X-axis direction, the Y-axis direction, and the Z-axis direction. As shown in fig. 1, the X-axis direction is the width direction of the mobile phone, the Y-axis direction is the length direction of the mobile phone, and the Z-axis direction is the thickness direction of the mobile phone.

As shown in fig. 1, the mobile phone 100 includes a housing, a display screen mounted on the housing, and a camera module 101. The housing includes a center and a rear cover, a circuit board (not shown) of the mobile phone is mounted on the center, and the camera module is assembled on the circuit board and covered by the rear cover.

Fig. 2 is a schematic structural diagram of an exemplary camera module. As shown in fig. 2, the image pickup module 101 includes a substrate 11, a VCM (Voice Coil Motor) Motor 12, and a lens 13. The substrate 11 has a front surface and a back surface opposite to each other, the front surface of the substrate 11 refers to a surface on which the lens is mounted, and the back surface of the substrate 11 refers to a surface far from the lens. A VCM motor 12 and a lens 13 are sequentially mounted on the front surface of the substrate 11, and the lens 13 is movable in the Z direction under the control of the VCM motor 12. In the present embodiment, the substrate 11 includes a motherboard 14, a connector 15, and a connection board 16. The main board 14 is used for arranging various circuits required by the camera module 101, and the main board 14 is, for example, a hard board. The connector 15 is, for example, a BTB connector (board-to-board connector) for connection with a circuit board of an electronic device such as a cellular phone. The connection board 16 is used to connect the motherboard 14 and the connector 15. The connection board 16 is a flexible circuit board (FPC), and thus the connection board 16 can be bent.

Fig. 3 is a schematic grounding diagram of an exemplary camera module, and the lens 13 is not shown in fig. 3. As shown in fig. 3, in the conventional camera module, the VCM motor 12 is connected to the ground of the board 11 through the contacts 17, and the ground of the board 11 is extended to the position of the connector 15 and is connected to the ground of the circuit board of the terminal through the connector 15. This approach results in a long overall grounding path for the VCM motor 12, and when the terminal antenna is in a high power operating scenario, the energy radiated to the camera module cannot be discharged quickly, and the mipi (mobile industry processor interface) and IIC (Inter-Integrated Circui) signals of the camera module are easily disturbed, resulting in streaks or even jamming of the working state of the camera.

Based on the above description, the embodiment of the application provides a camera module and electronic equipment, which enable the energy radiated to the module to be discharged more quickly and sufficiently in a mode of directly connecting a motor to a terminal main board, so that the energy coupled to the mipi and IIC signals of the module is less, and the capacity of the camera module for resisting antenna interference is improved.

Fig. 4 is a schematic structural diagram of an image capturing module according to an embodiment of the present application. As shown in fig. 4, the image capturing module 101 provided in the embodiment of the present application includes an image capturing module 101 including a substrate 11, a VCM (Voice Coil Motor) Motor 12, and a lens 13. The substrate 11 has a front surface and a back surface opposite to each other, the front surface of the substrate 11 refers to a surface on which the lens is mounted, and the back surface of the substrate 11 refers to a surface far from the lens. A VCM motor 12 and a lens 13 are sequentially mounted on the front surface of the substrate 11, and the lens 13 is movable in the Z direction under the control of the VCM motor 12. In the present embodiment, the substrate 11 includes a motherboard 14, a connector 15, and a connection board 16. The main board 14 is used for arranging various circuits required by the camera module 101, and the main board 14 is, for example, a hard board. The connector 15 is, for example, a BTB connector (board-to-board connector) for connection with a circuit board of an electronic device such as a cellular phone. The connection board 16 is used to connect the motherboard 14 and the connector 15. The connection board 16 is a flexible circuit board (FPC), and thus the connection board 16 can be bent.

As shown in fig. 4, in the embodiment of the present application, a first grounding lug 121 and a second grounding lug 122 are formed on the side wall of the VCM motor 12. Illustratively, the VCM is generally rectangular or square in shape, and in the present embodiment, as exemplified in FIG. 4, the first and second grounding lugs 121 and 122 are formed on the upper and left side walls, respectively. Of course, in other embodiments, the first and second grounding lugs 121 and 122 may be formed on other adjacent or non-adjacent sidewalls, respectively. In the present embodiment, the first and second grounding ears 121 and 122 are formed in the middle region of the sidewall, i.e., the first and second grounding ears 121 and 122 are at a distance from the bottom of the VCM motor 12, or the first and second grounding ears 121 and 122 are at a height relative to the bottom of the VCM motor 12.

Illustratively, the first and second grounding ears 121 and 122 are disposed centrally on the side wall of the VCM motor 12, the first and second grounding ears 121 and 122 being generally rectangular in shape and having dimensions such as 4mm-5mm in length, 2mm-3mm in width, and 0.04mm-0.08mm in thickness. Illustratively, the first and second grounding ears 121, 122 are 4.4mm long, 2.6mm wide, and 0.06mm thick.

It should be appreciated that while in the present embodiment two grounding ears are provided on the VCM motor 12, in other embodiments one grounding ear or three grounding ears or more grounding ears may be provided.

As shown in fig. 4, in the embodiment of the present application, a grounding spring piece (not shown) is formed on the circuit board 102 of the terminal such as a mobile phone, and the position of the grounding spring piece corresponds to the first grounding ear portion 121 and the second grounding ear portion 122. One end of the grounding spring piece is fixed on the circuit board 102 and is electrically connected with a grounding wire or a grounding layer of the circuit board 102, and the other end of the grounding spring piece is in contact with or connected with and fixed with the first grounding lug 121 and the second grounding lug 122, so that the VCM motor 12 is directly electrically connected with the ground of the terminal main board 102 to enable energy radiated to the module to be discharged more quickly and sufficiently, and therefore little energy is coupled to mipi and IIC signals of the module, and the capacity of the camera module for resisting antenna interference is improved. That is, in the embodiment of the present application, the side portion of the VCM motor 12 is extended, so that the VCM motor can be directly connected to the terminal motherboard through the grounding spring, so that the interfering electromagnetic wave generated during high-power transmission of the antenna is released through grounding, so that the interfering signal coupled to the motherboard of the camera module is sufficiently small and even directly filtered, and the signal interference problem of the antenna radiation to the camera module is overcome.

FIG. 5 is an assembly schematic of the camera module shown in FIG. 4 on a circuit board; fig. 6 is a schematic structural view of a fixing bracket according to an embodiment of the present application.

As shown in fig. 5, in the embodiment of the present application, since the first grounding ear 121 and the second grounding ear 122 are electrically connected with the terminal motherboard 102 through the grounding spring, in order to ensure the structural stress requirement thereof, the fixing bracket 17 is added around the VCM motor 12 to ensure the stress of the VCM motor 12.

Illustratively, the fixing bracket 17 is made of plastic material, so that the weight is lighter, and the light and thin design of the terminal is facilitated. And the fixing bracket 17 is vertically installed on the terminal main board 102, and the fixing bracket 17 is connected and fixed by being clamped with the first grounding lug 121 and the second grounding lug 122.

As shown in fig. 6, the fixing bracket 17 includes a frame 170, a first connection portion 171, a second connection portion 172, a first nip portion 173, and a second nip portion 174 provided on the frame 170.

The frame 170 is generally rectangular in shape that encloses an opening that is sized and shaped to conform to the shape and size of the VCM motor 12. The thickness or height of the frame 170 matches the height of the first and second grounding lugs 121 and 122 from the bottom of the VCM motor. That is, after the fixing bracket 17 is mounted on the terminal motherboard 102, the frame 17 surrounds the VCM motor 12, the first connecting portion 171 and the second connecting portion 172 are respectively located above the first grounding ear 121 and the second grounding ear 122 and respectively engaged with the first grounding ear 121 and the second grounding ear 122, and the first pressing portion 173 and the second pressing portion 174 respectively press against corner platforms of the VCM motor 12, so as to further fix the VCM motor 12 to ensure the stress requirement of the VCM motor 12.

The first and second connection portions 171 and 172 extend outwardly from adjacent two rims of the frame 170, respectively, and the first and second connection portions 171 and 172 have shapes and sizes that match the shapes and sizes of the first and second grounding ears 121 and 122, respectively. The first connection portion 171 and the second connection portion 172 and the first grounding lug 121 and the second grounding lug 122 are correspondingly formed with a clamping structure, so that when the fixing bracket 17 is mounted on the terminal motherboard 102, the frame 17 surrounds the VCM motor 12, and the first connection portion 171 and the second connection portion 172 are respectively located above the first grounding lug 121 and the second grounding lug 122 and respectively clamped with the first grounding lug 121 and the second grounding lug 122.

The first and second press-fit portions 173 and 174 are respectively disposed at two diagonal positions of the frame 170, and when the fixing bracket 17 is mounted on the terminal main board 102, the frame 17 surrounds the VCM motor 12, and the first and second press-fit portions 173 and 174 are respectively pressed against corner platforms of the VCM motor 12.

In order to verify the anti-antenna interference performance of the camera module 101 in the embodiment of the present application, the present application respectively simulates the isolation values of the mipi signal and the iic signal of the camera module under the conventional VCM scheme (fig. 3) and the novel VCM design scheme (fig. 4) of the present application under the high-power working condition of the whole antenna, and the results are as follows.

As can be seen from the comparison of the tables, the isolation value of the camera module has 6-29db benefits under different signals, and the anti-interference performance of the camera module is greatly improved.

The above embodiments are merely for illustrating the technical solution of the present application, and not for limiting the same; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present application.

Claims

1. An electronic device, comprising:

2. The electronic device of claim 1, wherein one of the grounding ears is formed on each of two adjacent side walls of the motor.

3. The electronic device of claim 1, wherein the grounding ear has a length of 4mm-5mm, a width of 2mm-3mm, and a thickness of 0.04mm-0.08mm.

4. The electronic device of any one of claims 1-3, further comprising a stationary bracket mounted vertically on the circuit board and disposed around the periphery of the motor.

5. The electronic device of claim 4, wherein the fixed bracket comprises a frame and at least one connecting portion disposed on the frame, the connecting portion being engaged with the corresponding grounding ear.

6. The electronic device of claim 5, wherein the frame comprises four rims connected to each other, and one of the connection portions is provided on each of two adjacent rims of the frame.

7. The electronic device of claim 5, wherein the mounting bracket further comprises at least one nip disposed on the frame, the nip being pressed against a corner location of the motor top.

8. The electronic device of claim 7, wherein the frame comprises four rims connected to each other, and wherein the pressing portions are provided at opposite corner positions of the frame, respectively.

9. A camera module, comprising: the lens comprises a substrate, a motor and a lens, wherein the motor and the lens are arranged on the substrate, and at least one grounding lug part is formed on the side wall of the motor.

10. The camera module of claim 9, wherein one of the grounding lugs is formed on each of two adjacent side walls of the motor.