CN113242373B

CN113242373B - Camera module and electronic equipment

Info

Publication number: CN113242373B
Application number: CN202110621303.5A
Authority: CN
Inventors: 杨泽; 丁文超; 杨卓坚; 易铃棋
Original assignee: Vivo Mobile Communication Co Ltd
Current assignee: Vivo Mobile Communication Co Ltd
Priority date: 2021-06-03
Filing date: 2021-06-03
Publication date: 2023-06-27
Anticipated expiration: 2041-06-03
Also published as: CN113242373A; WO2022253217A1

Abstract

The application discloses camera module and electronic equipment, camera module includes shell, lens subassembly, first shell fragment, chip subassembly and drive assembly, lens subassembly fixed mounting in the shell, the frame of first shell fragment with shell fixed connection, chip subassembly movably installs in the inside of shell, drive assembly is used for driving chip subassembly removes; the driving assembly comprises a coil carrier, the chip assembly comprises a substrate, a chip and a flexible circuit board, the substrate is fixedly connected with the coil carrier, the flexible circuit board is connected with the chip, the flexible circuit board is fixedly installed on the shell, and the first elastic sheet and the flexible circuit board are arranged at two opposite ends of the coil carrier. The flexible circuit board has elasticity in this application, acts as the second shell fragment, compare in traditional camera module only need set up a first shell fragment can, reduce camera module's volume.

Description

Camera module and electronic equipment

Technical Field

The application belongs to the technical field of electronic equipment, and particularly relates to a camera module and electronic equipment.

Background

In the related art, photographing is a common function of a mobile phone. The conventional function of the camera is that the motor drives the internal lens carrier to drive the lens fixed with the camera to move along the Z-axis direction, so that the relative position of the lens and the chip is changed, and automatic focusing is realized. However, after the weight of the lens is increased, the motor needs to be matched with a motor with larger horsepower, the space occupation of the mobile phone is obvious, and the arrangement of the whole structure is limited.

Disclosure of Invention

The application aims at providing a camera module and electronic equipment, solves the problem that the existing camera module occupies a large space.

In order to solve the technical problems, the application is realized as follows:

in a first aspect, an embodiment of the present application provides a camera module, including a housing, a lens assembly, a first elastic sheet, a chip assembly and a driving assembly, where the lens assembly is fixedly installed on the housing, an outer frame of the first elastic sheet is fixedly connected with the housing, the chip assembly is movably installed in the housing, and the driving assembly is used for driving the chip assembly to move;

the driving assembly comprises a coil carrier, the chip assembly comprises a substrate, a chip and a flexible circuit board, the substrate is fixedly connected with the coil carrier, the flexible circuit board is connected with the chip, the flexible circuit board is fixedly installed on the shell, and the first elastic sheet and the flexible circuit board are arranged at two opposite ends of the coil carrier.

According to the camera module provided by the embodiment of the application, the driving assembly comprises a magnet and a coil, the magnet is fixedly installed in the shell, and the coil is wound on the coil carrier.

According to the camera module provided by the embodiment of the application, the magnet is strip-shaped iron, and the strip-shaped iron is fixed on the inner wall of the shell and correspondingly arranged along the four sides of the first elastic sheet.

According to the camera module provided by the embodiment of the application, the number of the magnets is four, the magnets are fixedly pressed on one side of the first elastic sheet towards the chip, and the magnets are correspondingly arranged at four corners of the first elastic sheet one by one.

According to the embodiment of the application, the camera module further comprises a Hall magnet, the Hall magnet is fixedly installed at one corner of the shell, a Hall sensing chip is installed on the substrate and used for detecting the position of the Hall magnet.

According to the camera module provided by the embodiment of the application, the camera module further comprises an optical filter, the optical filter is fixedly installed on the coil carrier, and the optical filter is located between the lens assembly and the chip.

According to the camera module provided by the embodiment of the application, the camera module further comprises a steel sheet, wherein the steel sheet is fixedly arranged at one end of the base far away from the chip, the flexible circuit board is fixedly arranged on the base, and the base and one end of the shell close to the chip are fixed; alternatively, the steel sheet is directly fixed to the housing.

According to the camera module provided by the embodiment of the application, the side face of the coil carrier is provided with the first winding post and the second winding post, the first winding post is used for fixing the positive electrode of the coil, and the second winding post is used for fixing the negative electrode of the coil.

According to the camera module provided by the embodiment of the application, the flexible circuit board comprises the connecting part, the connecting part is positioned in the middle of the flexible circuit board, the connecting part is connected with the chip, and the leads of the flexible circuit board are led out from two sides of the connecting part.

In a second aspect, an embodiment of the present application proposes an electronic device, including: a housing;

the camera module, the camera module is according to any one of the first aspect, and the camera module is installed on the shell.

In the embodiment of the application, the lens component is fixedly arranged on the shell, and the driving component drives the chip component to move in the shell so as to realize focusing. The position of the lens component does not move, so that the back focus of the lens component can be shortened, and the reliability is improved; the shoulder height of the camera module can be reduced, and the whole machine stacking is facilitated. The flexible circuit board has elasticity and serves as a second elastic sheet, so that the camera module in the embodiment of the application only needs to be provided with a first elastic sheet, and the volume of the camera module is reduced. The electronic equipment such as a mobile phone or a camera using the camera shooting module does not need to reserve a screen printing window for the lens assembly to move, so that the screen printing of the electronic equipment is reduced, and the attractiveness is improved.

Additional aspects and advantages of the application 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 application.

Drawings

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

FIG. 1 is a schematic diagram of an imaging module according to an embodiment of the present application;

FIG. 2 is an exploded view of the camera module shown in FIG. 1;

FIG. 3 is a partial exploded view of the camera module shown in FIG. 1;

FIG. 4 is another partial exploded view of the camera module shown in FIG. 1;

FIG. 5 is a partial block diagram of the camera module shown in FIG. 1;

FIG. 6 is a block diagram of the flexible circuit board and steel sheet shown in FIG. 1;

FIG. 7 is an internal block diagram of an imaging module according to another embodiment of the present application;

FIG. 8 is an exploded view of the camera module shown in FIG. 7;

FIG. 9 is a cross-sectional view of the camera module shown in FIG. 7;

FIG. 10 is a schematic view illustrating adjustment of the camera module shown in FIG. 7;

FIG. 11 is a schematic illustration of the adjustment of the camera module shown in FIG. 7 with the motor in place;

fig. 12 is a schematic structural view of the flexible circuit board shown in fig. 8.

Reference numerals:

1: a housing; 2: a lens assembly; 3: a first elastic sheet;

4: a coil carrier; 41: a first winding post; 42: a second winding post;

5: a coil; 6: a chip; 7: a substrate;

71: a Hall sensing chip; 8: a flexible circuit board; 81: a connection part;

82: a wiring section; 83: a connector; 9: a magnet;

10: a base; 11: a steel sheet; 12: a light filter;

13: hall magnet.

Detailed Description

Reference will now be made in detail to embodiments of the present application, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functionality throughout. The embodiments described below by referring to the drawings are exemplary only for the purpose of explaining the present application and are not to be construed as limiting 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 features of the terms "first", "second", and the like in the description and in the claims of this application may be used for descriptive or implicit inclusion of one or more such features. In the description of the present application, unless otherwise indicated, the meaning of "a plurality" is two or more.

In the description of the present application, it should be understood that the terms "upper," "lower," "front," "rear," "top," "bottom," "axial," "radial," "circumferential," and the like indicate an orientation or positional relationship based on that shown in the drawings, merely for convenience of description and to simplify the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be configured and operated in a particular orientation, and thus should not be construed as limiting the present application.

The following describes a specific structure of an image capturing module according to an embodiment of the present application with reference to fig. 1 to 12.

The embodiment of the application provides a camera module, as shown in fig. 1 and 7, which comprises a housing 1, a lens assembly 2, a first elastic sheet 3, a chip assembly and a driving assembly. As shown in fig. 2 and 8, the lens assembly 2 is fixedly mounted on the housing 1, the outer frame of the first elastic sheet 3 is fixedly connected with the housing 1, the chip assembly is movably mounted in the housing 1, and the driving assembly is mounted in the housing 1 for driving the chip assembly to move. The driving assembly comprises a coil carrier 4, the chip assembly comprises a flexible circuit board 8, a substrate 7 and a chip 6, the substrate 7 is fixedly connected with the coil carrier 4, the chip 6 is fixedly mounted on the substrate 7, and the substrate 7 is connected with the flexible circuit board 8 and electrically connected. The flexible circuit board 8 is fixedly mounted on the housing 1, and the first spring plate 3 and the flexible circuit board 8 are arranged at opposite ends of the coil carrier 4.

The lens assembly 2 is used for transmitting and refracting light, the light is projected onto the chip 6 after the external light passes through the lens assembly 2, and the chip 6 receives an optical signal and converts the optical signal into an electrical signal to achieve the purpose of imaging. The flexible circuit board 8 is used for transmitting electrical signals. The substrate 7 is a hard board, the chip 6 is mounted on the substrate 7, the chip 6 is supported by the substrate 7, and signals of the chip 6 are transmitted to the substrate 7 and then transmitted to the device body of the electronic device through the flexible circuit board 8. The lens assembly 2 is fixedly mounted on the housing 1 without movement. As shown in fig. 2 and 8, the housing 1 is a square housing, which serves as a barrier to prevent the internal components from being disturbed by the external environment. The first spring plate 3 and the flexible circuit board 8 are arranged at the upper end and the lower end of the coil carrier 4, and both have elasticity. When the driving assembly drives the chip assembly to move, the first elastic sheet 3 pulls the coil carrier 4 from above, and the flexible circuit board 8 serves as a second elastic sheet to pull the coil carrier 4 from below. Optionally, the housing 1 is an iron housing.

In some embodiments of the present application, the flexible circuit board 8 is directly secured to the housing 1 as shown in fig. 2. In still other embodiments of the present application, as shown in fig. 8, the flexible circuit board 8 is fixedly mounted on the base 10, and the base 10 is fixedly mounted on the end of the housing 1 near the chip 6.

The embodiment of the application provides a camera module, lens assembly 2 fixed mounting in shell 1, drive assembly drive chip assembly removes in shell 1 to realize focusing. Since the position of the lens assembly 2 does not move, the back focus of the lens assembly 2 can be shortened, and the reliability is improved; the shoulder height of the camera module can be reduced, and the whole machine stacking is facilitated. The flexible circuit board 8 has elasticity and serves as a second elastic sheet, so that the camera module in the embodiment of the application only needs to be provided with the first elastic sheet 3, and the volume of the camera module is reduced. The electronic equipment such as a mobile phone or a camera using the camera shooting module does not need to reserve a screen printing window for the lens assembly 2 to move, so that the screen printing of the electronic equipment is reduced, and the attractiveness is improved.

The embodiment of the application provides a module of making a video recording, lens assembly 2 does not take place to remove, and the good reliability, chip 6 are installed on movable part coil carrier 4, can effectively cushion when taking place the outside striking, prevent that chip 6 fracture from leading to the module of making a video recording to become invalid, especially to the chip of big end high pixel, the effect is more obvious. In the application, the lens component 2 is fixed, the motor is used for pushing the chip 6 to move, and the weight of the chip 6 is only 1/10 of that of the lens component 2, so that the thrust of the motor can be reduced, and the cost is reduced.

According to some embodiments of the present application, the driving assembly further includes a magnet 9 and a coil 5, the coil 5 is wound on the coil carrier 4, the magnet 9 is fixedly mounted in the housing 1, and the magnet 9 cooperates with the coil 5 to drive the chip 6 to move. The coil 5 is positioned in a magnetic field formed by the magnet 9, and upward Lorentz force is generated by adjusting the direction and the magnitude of current in the coil 5 to drive the coil carrier 4 to move up and down so as to drive the chip 6 to move up and down. Alternatively, the magnet 9 is a permanent magnet.

In some embodiments of the present application, in the initial state, the chip assembly is located at the top, as in fig. 10 (a), where the motor is set on top, i.e. the chip assembly is located closest to the lens assembly 2 in the active stroke. When it is necessary to take pictures of scenes at different distances, the chip 6 can be moved downwards until the most clear point of the scene is found. For example, as shown in fig. 10 (b), the chip 6 is moved to the intermediate position of the stroke; as shown in fig. 10 (c), the chip 6 moves to the lowest of the strokes, and runs through the motor stroke. In still other embodiments of the present application, in an initial state, the chip assembly is located at a middle position of the stroke, as shown in fig. 11 (a), i.e. in the motor, and when it is required to photograph scenes at different distances, the chip 6 can move upwards (as shown in fig. 11 (b)) and downwards (as shown in fig. 11 (c)) until the clearest point of the scene is found. Compared with the motor set-top, the motor set-top can reach the target position only by moving upwards or downwards according to the scene distance without running through the whole stroke of the motor, thereby saving electricity, reducing the power consumption and realizing quick focusing.

In some embodiments, as shown in fig. 7 and 8, the magnet 9 is a bar iron, and the bar iron is four, and the four bar irons are fixedly installed on the inner wall of the housing 1 and correspond to the four sides of the first elastic sheet 3 respectively, so as to form a four-sided magnet. The quadrilateral magnet can provide a large thrust and can ensure balance between the coil 5 and the coil carrier 4 in the moving process. In still other embodiments, as shown in fig. 3, the magnets 9 are four, and four magnets 9 are mounted at four corners of the first spring plate 3 to form a four-corner magnet. The magnet 9 may be triangular or trapezoidal, the magnet 9 is pressed on the first elastic sheet 3, and the magnet 9 is matched with the housing 1 to better fix the first elastic sheet 3. Compared with a four-side magnet, the four-side magnet occupies small space, is beneficial to reducing the volume of the camera module, and further reduces the volume of the electronic equipment.

According to some embodiments of the present application, as shown in fig. 3, the camera module further includes a hall magnet 13, where the hall magnet 13 is fixedly installed at a corner of the housing 1. As shown in fig. 5, a hall sensor chip 71 is mounted on the substrate 7, and the hall sensor chip 71 is used for detecting the position of the hall magnet 13.

The embodiment of the application provides a camera module, hall magnetite 13 install the one corner at shell 1, reduce the space that hall magnetite 13 occupy. The Hall sensing chip 71 detects the position of the Hall magnet 13 and feeds the position back to the driving chip, so that support is provided for quick and accurate focusing of the camera. Optionally, the hall sensing chip 71 integrates the driving function of the camera module, and is also used as a driving chip, so that the occupied volume of the driving component of the camera module is reduced, and the miniaturization of the camera module is facilitated.

According to some embodiments of the present application, the camera module further includes an optical filter 12, the optical filter 12 is fixedly mounted on the coil carrier 4, and the optical filter 12 is located between the lens module and the chip 6. The filter 12 is used for filtering out infrared light and transmitting visible light. In some embodiments, as shown in fig. 4 and 9, the optical filter 12 is fixed at the bottom of the coil carrier 4 by dispensing or integrally molding, and a base body for carrying the optical filter 12 is not required to be provided, so that the height of the camera module is reduced. The optical filter 12 has a regular square structure, and can be directly installed in the coil carrier 4 without a chamfer.

Alternatively, the filter 12 is not chamfered, and the filter is better implemented in the process and has lower engineering difficulty than a filter with a chamfer.

The embodiment of the application provides a camera module still includes steel sheet 11, and steel sheet 11 is used for reinforcing mechanical strength, and protection flexible circuit board 8 is not destroyed. The steel sheet 11 has a superior effect in heat dissipation compared to plastic. In some embodiments, as shown in fig. 6 and 9, the steel sheet 11 is fixedly mounted at an end of the base 10 away from the chip 6, wherein the flexible circuit board 8 is fixedly mounted to the base 10, and the base 10 is fixed to an end of the housing 1 near the chip 6. In still other embodiments, the steel sheet 11 is directly secured to the housing 1.

In order to facilitate the installation of the optical filter, as shown in fig. 4, the side of the coil carrier 4 is provided with a first winding post 41 and a second winding post 42, the first winding post 41 is used for fixing the positive pole of the coil 5, and the second winding post 42 is used for fixing the negative pole of the coil 5. In some embodiments, the first winding leg 41 and the second winding leg 42 are disposed on the same side of the coil carrier 4; in other embodiments, the first winding leg 41 and the second winding leg 42 are disposed on different sides, such as opposite sides, of the coil carrier 4. The camera module provided by the embodiment of the application reduces the occupation of the coil carrier 4 to the winding space, so that space is reserved for installing the optical filter and the substrate 7.

The flexible circuit board 8 includes a connection portion 81, the connection portion 81 is located in the middle of the flexible circuit board 8, the connection portion 81 is connected to the chip 6, and the flexible circuit board 8 is led out from both sides of the connection portion 81. By means of the structure of the leads on both sides, more welding spots and welding space can be provided for the connection of the chip 6 and the flexible circuit board 8. Specifically, as shown in fig. 6 and 12, the flexible circuit board 8 includes a connection portion 81 and a wiring portion 82, and the connection portion 81 is connected to a connector 83 through the wiring portion 82. The connector 83 is used for providing power for the whole camera module, the circuit part 82 plays a role in connection, and the chip 6 is installed in the inner cavity of the substrate 7 and is connected with the connection part 81.

In addition, the embodiment of the application also provides electronic equipment, which comprises a shell and the camera module, wherein the camera module is arranged on the shell.

The electronic device disclosed in the embodiment of the present application may be a mobile phone, a single-lens reflex camera, a monitoring camera, or the like, and of course, the electronic device disclosed in the embodiment of the present application may also be other kinds of electronic devices, and the embodiment of the present application does not specifically limit the specific kind of electronic device.

In the description of the present specification, reference to the terms "one embodiment," "some embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples," etc., means 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 application. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. 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 application have been shown and described, it will be understood by those of ordinary skill in the art that: many changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the application, the scope of which is defined by the claims and their equivalents.

Claims

1. The camera shooting module is characterized by comprising a shell, a lens assembly, a first elastic piece, a chip assembly and a driving assembly, wherein the lens assembly is fixedly arranged on the shell, an outer frame of the first elastic piece is fixedly connected with the shell, the chip assembly is movably arranged in the shell, and the driving assembly is used for driving the chip assembly to move;

the driving assembly comprises a coil carrier, the chip assembly comprises a substrate, a chip and a flexible circuit board, the substrate is fixedly connected with the coil carrier, the flexible circuit board, the substrate and the chip are connected, the flexible circuit board is fixedly arranged on the shell, and the first elastic sheet and the flexible circuit board are arranged at two opposite ends of the coil carrier;

the driving assembly comprises a magnet and a coil, the magnet is fixedly arranged in the shell, the coil is wound on the coil carrier, the magnet is strip-shaped iron, and four strip-shaped irons are fixed on the inner wall of the shell and are correspondingly arranged along four sides of the first elastic sheet;

the flexible circuit board comprises a connecting part and a circuit part, wherein the connecting part is connected with the connector through the circuit part, the connecting part is positioned in the middle of the flexible circuit board, leads of the flexible circuit board are led out from two sides of the connecting part, and the leads are connected with the chip.

2. The camera module according to claim 1, wherein the number of the magnets is four, the four magnets are fixedly pressed on one side of the first elastic sheet facing the chip, and the four magnets are correspondingly arranged at four corners of the first elastic sheet one by one.

3. The camera module according to claim 1 or 2, further comprising a hall magnet fixedly mounted at a corner of the housing, wherein a hall sensing chip is mounted on the substrate, and the hall sensing chip is configured to detect a position of the hall magnet.

4. The camera module of claim 1 or 2, further comprising a filter fixedly mounted to the coil carrier, the filter being located between the lens assembly and the chip.

5. The camera module of claim 1 or 2, further comprising a steel sheet fixedly mounted at an end of the base away from the chip, wherein the flexible circuit board is fixedly mounted to the base, and the base is fixed with an end of the housing near the chip; alternatively, the steel sheet is directly fixed to the housing.

6. The camera module according to claim 1 or 2, wherein a first winding post and a second winding post are provided on a side surface of the coil carrier, the first winding post being used for fixing a positive electrode of the coil, and the second winding post being used for fixing a negative electrode of the coil.

7. An electronic device, comprising:

a housing;

a camera module, the camera module being according to any one of claims 1-6, the camera module being mounted on the housing.