CN114793257A - Camera module and terminal equipment - Google Patents

Abstract

The invention discloses a camera module and a terminal device, relates to the technical field of camera modules, and solves the technical problem that the structure of the camera module in the prior art is relatively large. The camera module includes a camera assembly, a flexible part and a drive assembly, the flexible assembly includes a mounting part and an elastic part, the mounting part is equipped with a photosensitive chip, and the driving assembly can drive the mounting part to overcome the elastic force of the elastic part to move. In the present invention, a flexible component is arranged and the photosensitive chip is fixed on the mounting part. When focusing is required, the driving component drives the mounting part to move against the elastic force of the elastic part, and at the same time, the mounting part drives the photosensitive chip mounted on it to move to realize automatic focusing The camera module of the present invention does not need to set a voice coil motor on the camera module, and the voice coil motor drives the camera module to move to realize automatic focusing, thereby helping to reduce the shoulder height and volume of the camera module.

Description

A camera module and terminal equipment

technical field

The present invention relates to the technical field of camera modules, in particular to a camera module and terminal equipment.

Background technique

In the related art, the auto-focusing camera module realizes the auto-focusing function through the movement of the lens. In this structure, a voice coil motor is usually used to drive the movement of the lens, and the voice coil motor has a large structure, resulting in a large shoulder height of the camera module. As a front camera, since the screen ratio of terminal devices represented by mobile phones is required to be more than 96%, and the screen opening size is required to be small, the automatic focusing method that uses a voice coil motor to drive the movement of the lens cannot meet the requirements of small camera modules. ization needs.

SUMMARY OF THE INVENTION

In view of this, the purpose of the present invention is to overcome the deficiencies of the prior art. In the first aspect, a camera module is provided to solve the technical problem that the structure of the camera module is relatively large due to the use of a voice coil motor to drive the movement of the lens.

The technical scheme adopted by the present invention to solve the technical problem is:

A camera module, comprising:

camera assembly;

a flexible part, the camera assembly and the flexible part are fixedly arranged, the flexible part includes a mounting part and an elastic part that are connected, and the mounting part is equipped with a photosensitive chip arranged opposite to the camera assembly;

a drive assembly for generating a drive force;

Wherein, the driving component can drive the mounting portion to move, and the mounting portion drives the photosensitive chip to move.

On the basis of the above technical solutions, the camera module can also be improved as follows.

Optionally, the mounting portion and the elastic portion are integrally formed with a flexible structure.

Optionally, the flexible component is a flexible circuit board, one end of the flexible circuit board is bent, the bending end face of the flexible circuit board is provided with the mounting portion, and the bending connection portion of the flexible circuit board is provided with the mounting portion. the elastic part.

Optionally, the flexible component is a flexible circuit board, the flexible circuit board is provided with a hollowed-out portion, the hollowed-out middle portion of the flexible circuit board is provided with the mounting portion, and the hollowed-out edge portion of the flexible printed circuit board is provided with a frame. part, and the elastic part is provided in the remaining parts of the flexible circuit board after the hollowing out.

Optionally, a carrier board is connected to the mounting portion, and the photosensitive chip is connected to the carrier board.

Optionally, the drive assembly includes a magnetic assembly and a coil assembly, the magnetic assembly is connected and fixed to the camera assembly, the coil assembly is connected and fixed to the carrier board, and the coil assembly is located in the magnetic field of the magnetic assembly. within the range.

Optionally, the coil assembly includes a first bracket and a coil body, the first bracket is connected and fixed to the carrier board, and the coil body is wound on the first bracket.

Optionally, a filter is built in the first bracket, and the filter is located between the camera assembly and the photosensitive chip.

Optionally, the coil assembly includes a coil body directly disposed on the carrier board.

Optionally, an elastic member is connected between the magnetic component and the coil component.

Optionally, the magnetic assembly includes a second bracket and a magnetic piece, the magnetic piece is fixed inside the second bracket, and the camera assembly is fixed outside the second bracket.

Optionally, a position sensor is further connected to the carrier board, a position magnetic member is also fixed inside the second bracket, and the position sensor is arranged opposite to the position magnetic member.

Optionally, the second bracket is connected to a base, and the flexible member is fixed to the base.

Optionally, the mounting portion can drive the photosensitive chip to move along the optical axis direction of the camera module, and/or the mounting portion can drive the photosensitive chip to be perpendicular to the optical axis direction of the camera module. move or twist.

In a second aspect, the present invention also provides a terminal device, including the above-mentioned camera module.

Compared with the prior art, the camera module provided by the present invention has the following beneficial effects:

In the present invention, a flexible part is provided, and the flexible part is provided with a mounting part and an elastic part, and the photosensitive chip is fixed on the mounting part. In addition, the present invention is also provided with a driving component. When focusing is required, the driving component drives the mounting part to overcome the elastic part. The elastic force moves, and at the same time, the mounting part drives the photosensitive chip arranged on it to move to realize automatic focusing. It is beneficial to reduce the shoulder height and volume of the camera module.

Description of drawings

In order to explain the embodiments of the present invention or the technical solutions in the prior art more clearly, the following briefly introduces the accompanying drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description are only These are some embodiments of the present invention. For those of ordinary skill in the art, other drawings can also be obtained according to these drawings without creative efforts.

1 is a schematic diagram of an exploded structure of a camera module of the present invention;

Fig. 2 is a side sectional structural schematic diagram of the camera module in Fig. 1;

Fig. 3 is the other side sectional structure schematic diagram of the camera module in Fig. 1;

Fig. 4 is a three-dimensional schematic diagram of the flexible circuit board in Fig. 1;

Fig. 5 is another three-dimensional schematic diagram of the flexible circuit board in Fig. 1;

Fig. 6 is another three-dimensional structural schematic diagram of the flexible circuit board in Fig. 1;

Fig. 7 is another three-dimensional structural schematic diagram of the flexible circuit board in Fig. 1;

Fig. 8 is another exploded structure schematic diagram of the camera module of the present invention;

Fig. 9 is a side sectional structural schematic diagram of the camera module in Fig. 8;

FIG. 10 is a three-dimensional schematic diagram of the relative position of the magnetic element and the coil body in FIG. 9;

FIG. 11 is another structural schematic diagram of the relative positions of the magnetic element and the coil body of the present invention.

In the picture:

10—camera assembly; 21—second bracket; 22—magnetic part; 23—position magnetic part; 30—shrapnel; 40—filter; 51—first bracket; 52—coil body; 53—winding post; 60 - photosensitive chip; 71 - carrier board; 72 - position sensor; 80 - flexible circuit board; 81 - mounting part; 82 - bending connection part; 83 - frame part; 831 - first contact part; 832 - first bending part 841—the second contact part; 842—the inner frame part; 843—the third contact part; 851—the fourth contact part; 852—the second bending part; 90—the base.

Detailed ways

In order to make the objectives, technical solutions and advantages of the present invention clearer, the technical solutions of the present invention will be described in detail below. Obviously, the described embodiments are only some of the embodiments of the present invention, and not all of them. Based on the embodiments of the present invention, all other implementations obtained by those of ordinary skill in the art without creative work fall within the protection scope of the present invention.

Example:

The present invention provides a camera module, as shown in FIG. 1 to FIG. 3 , including a camera assembly 10 . The camera assembly 10 generally includes a lens barrel, a plurality of lenses, and a spacer ring and other components stacked. The camera module acquires image signals through the camera assembly 10 , and the image signals are projected on the photosensitive chip 60 and converted into electrical signals to be sent to the processor.

As shown in FIGS. 1 to 3 , the camera assembly 10 is connected with a magnetic assembly, and the magnetic assembly includes a second bracket 21 and a magnetic member 22 . The second bracket 21 has a semi-box structure with an open top and an open bottom as a whole. The camera assembly 10 is connected to the outside of the top of the second bracket 21 , and the connection methods include, but are not limited to, sticking, screw connection, snap connection, or integral molding. Wherein, the image signal acquired by the camera assembly 10 is transmitted through the top opening. Of course, the second bracket 21 can also be designed in various structural forms such as a cylinder shape, a box shape, or a frame, and this embodiment does not limit the specific structure of the second bracket 21 . In addition, after the second bracket 21 is fixedly connected with the camera assembly 10, the generated driving force can be controlled below the camera assembly 10, so that the camera assembly 10 can also realize the autofocus function without moving.

As shown in FIG. 1 to FIG. 3 , the magnetic member 22 is fixed on the inner side wall of the half-box structure of the second bracket 21 and is used to cooperate with the coil assembly to generate magnetic thrust. Wherein, an accommodating groove may be provided on the inner side wall of the second bracket 21 , and the structure of the accommodating groove corresponds to the magnetic member 22 , that is, the magnetic member 22 can be placed in the accommodating groove correspondingly to the inner side of the second bracket 21 . Wall fixed connection. The magnetic member 22 may be a magnet, or any one of a magnet, a magnetizing body or a conductive coil. The number of the magnetic parts 22 may be one or more, and in this embodiment, the number of the magnetic parts 22 is preferably two. The positions of the two magnetic members 22 are set opposite to each other, and the connection method between the magnetic member 22 and the second bracket 21 includes, but is not limited to, pasting, welding, or screw connection.

In this embodiment, a position magnetic member 23 is also connected to the inner side wall of the second bracket 21 for cooperating with the position sensor 72 to detect the relative position between the position magnetic member 23 and the position sensor 72 . The material of the position magnetic member 23 and the magnetic member 22 may be the same or different, and the connection method of the position magnetic member 23 and the second bracket 21 includes but is not limited to pasting, welding or screw connection.

As shown in FIG. 1 to FIG. 3 , the bottom of the second bracket 21 is connected with a base 90 , and the four corners of the base 90 have uprights matching the four corners of the second bracket 21 of the semi-box type structure, so that the base 90 can be connected to the second bracket 21 through the uprights. The positioning connection becomes the overall housing structure. The interior of the base 90 is sunk so as to provide sufficient space for the movement of the drive assembly. The connection manner of the second bracket 21 and the base 90 includes, but is not limited to, the manner of pasting, screw connection or snap connection. Of course, according to the actual structural shape of the second bracket 21 , the base 90 can also be designed in a circular, annular or polygonal structural shape.

As shown in FIG. 1 to FIG. 3 , the second bracket 21 is connected with the base 90 to form a casing structure, and the flexible member is at least partially disposed inside the casing structure for driving the photosensitive chip 60 to move. In some embodiments, a flexible circuit board 80 may be selected as the flexible component. The flexible circuit board 80 includes a mounting portion 81 and an elastic portion. The mounting portion 81 is used to mount the photosensitive chip 60 opposite to the camera assembly 10 . The flexible circuit board 80 is at least partially fixed inside the housing structure, and the photosensitive chip 60 can move within the housing structure.

It can be understood that the flexible part can also be made of other elastic materials such as silica gel, rubber, etc., and the photosensitive chip 60 can be separately connected to a circuit board. However, in this embodiment, the flexible circuit board 80 is directly selected as the flexible component, which can not only play the role of carrying the photosensitive chip 60 to move along the optical axis direction of the camera assembly 10, but also can conduct electricity and data transmission for the photosensitive chip 60. . The use of the flexible circuit board 80 can realize functional integration, which is beneficial to reduce the arrangement of other components, thereby helping to reduce the volume of the entire camera module. In addition, the versatility of the flexible circuit board 80 facilitates the reduction of related parts and components, thereby reducing costs.

As shown in FIG. 4 , as an embodiment, one end of the flexible circuit board 80 is bent and formed, the bent end portion becomes the mounting portion 81 , and the bent connecting portion 82 becomes an elastic portion, that is, the mounting portion 81 can be bent and formed. The connecting portion 82 moves or resets in the direction of the optical axis of the camera assembly 10 under the elastic action of the connecting portion 82 . Wherein, the number of times the flexible circuit board 80 is bent may be one or more times.

According to the actual wiring conditions of the flexible circuit board 80, the flexible circuit board 80 can be bent once to form a U-shaped structure; the flexible circuit board 80 can also be bent twice to form a Z-shaped or tumble-shaped structure; it can also be bent more more times to form more structural shapes. Meanwhile, according to the specific shape of the housing structure, the specific bending shape of the flexible circuit board 80 can be selected. For example, the bent mounting portion 81 is parallel to the unbent flexible circuit board 80; alternatively, the bent mounting portion 81 and the unbent flexible circuit board 80 are located on the same side or different from the bent connecting portion 82. side.

As shown in FIG. 5 , as another embodiment, the flexible circuit board 80 is provided with a hollowed-out portion, the hollowed-out central region becomes the mounting portion 81 , the hollowed-out edge portion becomes the frame portion 83 , and the rest of the hollowed-out portion becomes the elastic portion . The elastic part includes a first contact part 831 and a first bending part 832. The first bending part 832 has an L-shaped bent plate structure. The two ends of the first bending part 832 are respectively connected with the two first contact parts 831. The first contact parts 831 are respectively connected to the mounting part 81 and the frame part 83 to make the entire flexible circuit board 80 conduct. Along the circumferential direction of the mounting portion 81 , one or more first bending portions 832 may be provided between the mounting portion 81 and the frame portion 83 . In this embodiment, four equally divided first bending parts 832 are designed along the circumferential direction of the mounting part 81 . Multiple sets of traces can be arranged on each group of the first contact parts 831 and the first bending parts 832 , and the widths of the first contact parts 831 and the first bending parts 832 can also be set according to the needs of the traces. The widths of the first contact portion 831 and the first bending portion 832 may be the same or different. Of course, the shape of the first curved portion 832 is not limited to the L-shape, and the first curved portion 832 may also be designed in a structural form such as an arcuate shape, an arc shape, or a wave shape.

It can be understood that, due to the connection between the mounting portion 81 and the frame portion 83 through the first contact portion 831 and the first bending portion 832, the mounting portion 81 can be elastically raised and lowered relative to the frame portion 83, so that the photosensitive chip 60 can move along the edge of the frame. The optical axis direction of the camera assembly 10 is moved or reset. That is, the elastic part not only plays the role of elastic movement for the photosensitive chip 60 , but also plays the role of conducting electricity and transmitting signals between the mounting part 81 and the frame part 83 . Optionally, the mounting part 81 , the first contact part 831 , the first bending part 832 and the frame part 83 can be integrally formed by etching, so as to reduce the difficulty of manufacturing parts.

As shown in FIG. 6 , as another embodiment, the flexible circuit board 80 is also provided with hollow parts. The difference is that the elastic parts include a second contact part 841 , an inner frame part 842 and a third contact part 843 . The inner frame portion 842 is provided between the mounting portion 81 and the frame portion 83, the mounting portion 81 and the inner frame portion 842 are connected by a third contact portion 843, and the inner frame portion 842 and the frame portion 83 are connected by a second contact portion 841 connect. Among them, the two second contact parts 841 are arranged opposite to each other, and the two third contact parts 843 are arranged opposite to each other. The second contact parts 841 are perpendicular to the third contact parts 843 , which also makes the entire flexible circuit board 80 conduct, and the mounting part 81 is the same It can be elastically raised and lowered relative to the frame portion 83 . Of course, the second contact portion 841 and the third contact portion 843 may also be designed in various structural forms such as arc-shaped arrangement, annular arrangement or oblique arrangement. The inner frame portion 842 can also be designed as a multi-segment L-shaped or half-frame structure.

It can be understood that the mounting part 81 , the second contact part 841 , the inner frame part 842 , the third contact part 843 and the frame part 83 can also be integrally formed by etching to reduce the difficulty of manufacturing parts. This structure makes the mounting portion 81 have a larger elastic stiffness, which is suitable for the more sensitive movement control of the photosensitive chip 60 . At the same time, due to the annular arrangement of the inner frame portion 842 , the wiring mode of the flexible circuit board 80 can also be made more flexible.

As shown in FIG. 7 , as yet another embodiment, the flexible circuit board 80 is also provided with hollow parts. The difference is that the elastic part includes the fourth contact part 851 and the second bending part 852 of the strip structure. Both ends of the second bending portion 852 are connected between the mounting portion 81 and the frame portion 83 through two fourth contact portions 851 , respectively. The second bending part 852 is connected with the two fourth contact parts 851 to form an overall bent strip structure, and a plurality of bent strip structures are connected side by side between the mounting part 81 and the frame part 83 . Similarly, the entire flexible circuit board 80 is made conductive, and the mounting portion 81 can also be elastically raised and lowered relative to the frame portion 83 . Of course, the second curved portion 852 may also be designed in a strip-shaped structure such as an arcuate shape, an arc shape, or a wave shape. Similarly, the mounting portion 81 , the fourth contact portion 851 , the second bending portion 852 and the frame portion 83 may be integrally formed by etching.

It can be understood that the above-mentioned hollowed-out portion refers to the hollowed-out portion of the flexible circuit board 80 , and the structural forms of different elastic portions make the rigidity of the mounting portion 81 to be elastically lifted and lowered to be different. At the same time, the conductive properties of the flexible circuit board 80 are made different. According to different models or specifications of the photosensitive chips 60 mounted on the mounting portion 81 , the flexible circuit board 80 with different elastic portion structures can be selected.

It is worth noting that, due to the structural design of the mounting part and the elastic part, the above-mentioned flexible circuit board 80 is not only applicable to the scene where the photosensitive chip 60 moves along the optical axis of the camera assembly 10, but also applies to the photosensitive chip 60 in the camera module protection Applications in shaking scenes. That is, the photosensitive chip 60 can not only move along the vertical direction of the plane where the flexible circuit board 80 is located, but also can move or twist along the plane direction where the flexible circuit board 80 is located.

As shown in FIGS. 1 to 3 , the unbent part or frame part 83 of the flexible circuit board 80 is fixed between the second bracket 21 and the base 90 , so that the mounting part 81 is located in the middle area of the base 90 . Wherein, the sinking groove structure in the middle area of the base 90 can provide space for the lifting and lowering of the mounting part 81 . The carrier plate 71 is fixedly connected to the mounting portion 81 , and the carrier plate 71 has a plate structure as a whole. Of course, the carrier board 71 can also be designed with grooves adapted to the photosensitive chip 60 . After the photosensitive chip 60 is mounted on the carrier board 71 , the surface of the photosensitive chip 60 is flush with the surface of the carrier board 71 . The carrier board 71 can also be designed with a groove for installing the position sensor 72 , and the position sensor 72 is disposed opposite to the position of the position magnetic member 23 .

The position sensor 72 includes, but is not limited to, a Hall sensor or a TMR magnetic sensor and other position sensors. The position sensor 72 can be disposed directly opposite to the position magnetic member 23, or can be disposed diagonally to the position magnetic member 23, as long as the position sensor 72 can sense The magnetic field angle of the position magnetic member 23 can be changed. The carrier board 71 can be made of a rigid circuit board, a conductive aluminum foil or a copper sheet.

As shown in FIG. 1 to FIG. 3 , the carrier board 71 is connected with a coil component, and the coil component and the magnetic component are combined to form an electromagnetic drive component, which is used to provide the carrier board 71 with a driving force. The coil assembly includes a first bracket 51 and a coil body 52 . The first bracket 51 has an overall hollow frame structure. The first bracket 51 is fixedly connected to the carrier board 71 . The photosensitive chip 60 is located in the hollow position in the middle of the frame structure and can receive the image signal projected by the camera assembly 10 . Two winding posts 53 are arranged at intervals on the outer side wall of one side of the first bracket 51 , and a group of coil bodies 52 are wound between the two winding posts 53 to form a coil body 52 sidely wound on the first bracket 51 . Similarly, the other side of the first bracket 51 opposite to the coil body 52 is also provided with a winding post 53 and the coil body 52 . The coil body 52 is electrically connected to the carrier board 71 . Of course, the first bracket 51 can also be designed as a polygonal frame structure. According to the specific structure of the first bracket 51, more groups of coil bodies 52 can be wound on the upper side of the first bracket 51. The positions of the magnetic parts 22 on the two brackets 21 correspond to each other.

As shown in FIG. 2 and FIG. 3 , after the second bracket 21 is connected to the base 90 , the position of the magnetic element 23 is opposite to the position of the position sensor 72 , and the position of the magnetic element 22 is opposite to the position of the coil body 52 . Wherein, since the side-wound coil body 52 changes the direction of the current within the range of a single magnetic member 22 , the magnetic member 22 disposed opposite to the side-wound coil body 52 is a single-sided bipolar magnet. When the coil body 52 is energized, the coil body 52 generates a magnetic thrust under the action of the magnetic field of the magnetic member 22 and drives the carrier plate 71 to move along the optical axis direction of the camera assembly 10 through the first bracket 51 , thereby driving the photosensitive material on the carrier plate 71 The chip 60 moves along the optical axis direction of the camera assembly 10 .

It can be understood that due to the reasonable structural design and positional arrangement of the photosensitive chip 60, the coil assembly and the position sensor 72, the photosensitive chip 60, the coil assembly and the position sensor 72 can be carried on the carrier board 71 at the same time, so that the camera module can be The structure is more compact, which is beneficial to reduce the shoulder height size and volume of the camera module.

As shown in FIG. 11 , as another embodiment, the first bracket 51 can also cancel the structural design of the winding column 53 , and change to a structure in which a winding slot is provided along the circumferential direction of the first bracket 51 . A set of coil bodies 52 are wound in the winding slot in a surrounding manner, and the photosensitive chip 60 can also be driven by the coil bodies 52 to move along the optical axis direction of the camera module. Wherein, since the surrounding coil body 52 does not change the direction of the current within the range of the single magnetic member 22, the magnetic member 22 disposed opposite to the surrounding coil body 52 is selected from a single-sided monopole magnet. Of course, this embodiment does not specifically limit the number of single-sided monopole magnets. In this embodiment, according to the surrounding shape of the coil body 52 , four magnetic members 22 may be arranged around the coil body 52 , respectively.

It can be understood that, regardless of whether the coil body 52 is wound on the first bracket 51 in a side-winding manner or in a surrounding manner, the magnetic member 22 can be fixed on the inner side wall of the second bracket 21 . Therefore, for the two winding methods of the coil body 52 , there is no need to change the relative position of the magnetic member 22 in the second bracket 21 , thereby facilitating the maintenance work of the camera module in the later stage.

In order to precisely control the movement of the photosensitive chip 60 along the optical axis of the camera assembly 10 , in some embodiments, a guiding structure may be provided between the first bracket 51 and the second bracket 21 to ensure the accuracy of the movement of the photosensitive chip 60 . The guiding structure includes, but is not limited to, setting a guide post on the base 90 , and setting a guide groove matched with the guide post on the first bracket 51 . direction move. Of course, a structure in which balls and rolling grooves cooperate can also be used between the first bracket 51 and the second bracket 21 .

As shown in FIG. 1 to FIG. 3 , an installation step is provided inside the side wall of the first bracket 51 , and a filter 40 is built in the hollow position in the middle of the first bracket 51 , and the filter 40 is located between the camera assembly 10 and the photosensitive chip. Between 60, it is used to filter useless light waves. After the second bracket 21 and the base 90 are connected and fixed, an elastic member is connected between the second bracket 21 and the first bracket 51. The elastic member can be the elastic piece 30, or the elastic rubber or silicone structure, etc., to make the photosensitive chip 60 move. Then, it is reset under the joint action of the elastic piece 30 and the elastic part of the flexible circuit board 80 .

The principle of realizing automatic focusing in the present invention is: the coil body 52 receives electricity from the flexible circuit board 80, and since the camera assembly 10, the flexible circuit board 80 and the magnetic component are relatively fixed, the coil body 52 after the electricity is energized cuts the magnetic field line to generate magnetic thrust , under the action of the magnetic field force of the magnetic element 22 , the magnetic element 22 is moved relative to the magnetic element 22 by adsorption or repulsion. The first bracket 51 , the second bracket 21 and the base 90 orient the movement of the coil body 52 , so that the carrier plate 71 drives the photosensitive chip 60 to move along the optical axis of the camera assembly 10 against the elastic force of the elastic part. The image signal acquired by the camera assembly 10 sequentially passes through the opening at the top of the second bracket 21 , the filter 40 and the hollowed-out position in the middle of the first bracket 51 , and finally forms an image on the photosensitive chip 60 . When the coil body 52 loses power, the photosensitive chip 60 is reset under the common elastic force of the elastic sheet 30 and the elastic part of the flexible circuit board 80 . At the same time, the position sensor 72 acquires the relative position of the position magnetic member 23 in real time, and feeds back the focal length of the auto focus.

The present invention makes full use of the flexibility of the flexible circuit board 80, and designs the flexible circuit board 80 as a combination of the mounting part 81 and the elastic part, which not only realizes the circuit function of the flexible circuit board 80 itself, but also supports the photosensitive chip 60. , the role of elasticity. At the same time, the carrier board 71 carries the photosensitive chip 60 , the coil assembly and the position sensor 72 , and has a compact structure design. Different from the prior art structure in which the camera module is driven to move by a driving motor, the design of the driving motor is canceled, so that the camera module has a smaller shoulder height and a smaller volume.

In addition, the present invention is different from the prior art. The present invention adjusts the focal length by driving the photosensitive chip 60 to move along the optical axis of the camera module. For the entire camera module in use, the overall shoulder height of the camera module is Certainly, it is beneficial to determine the installation space of the camera module. However, the camera module in the prior art changes the shoulder height of the camera module during use due to driving the camera assembly 10 to move, which is not conducive to the determination of the installation space of the camera module.

As shown in FIGS. 8 to 10 , based on the camera module in the above embodiment, the coil assembly and the magnetic assembly can also be improved as follows: the coil body 52 is directly disposed on the board surface of the carrier board 71 by etching or sticking superior. Specifically, a boss protruding from the surface of the carrier plate 71 may be provided on the carrier board 71 , and the boss can locally increase the thickness of the carrier board 71 to ensure the etching depth of the coil body 52 . Wherein, according to the etched shape of the coil body, the magnetic member 22 can be either a single-sided monopole magnet or a single-sided bipolar magnet. The magnetic member 22 is fixed on the top of the inner side of the second bracket 21 , and the position of the magnetic member 22 and the coil body 52 are arranged opposite to each other.

The thickness of the carrier plate 71 can also be selected according to the etching depth of the coil body 52 , so that the coil body 52 can be directly etched on the surface of the carrier plate 71 without designing a boss structure. However, in order to reduce the thickness of the carrier plate 71 , it is only necessary to perform a local thickening process on the carrier plate 71 within the range of the coil body 52 , that is, the above-mentioned bosses are formed.

It can be understood that, the coil body 52 is integrated on the board surface of the carrier board 71 by means of etching or pasting, so that the magnetic components 22 and the carrier board 71 can be arranged in a stacked manner. Different from the way that the coil body 52 is arranged on the first bracket 51 in a side-winding or surrounding manner, the size of the entire camera module in the horizontal direction is reduced. 71 and the thickness of the first bracket 51 are thinner, thereby further reducing the shoulder height dimension of the camera module and further reducing the volume of the entire camera module.

As shown in FIG. 8 and FIG. 9 , the outer side wall of the first bracket 51 may be provided with a groove structure adapted to the outer contours of the coil body 52 and the magnetic member 22 , so that the grooves are matched with the bosses, which are used for aligning the carrier plate 71 The movement plays a guiding role. At this time, the main function of the first holder 51 is to mount the filter 40 . Therefore, the first bracket 51 can be designed to have a thinner thickness, which is conducive to further reducing the shoulder height of the camera module, thereby further reducing the volume of the camera module.

It can be understood that, this embodiment also does not specifically limit the number of the coil bodies 52 etched on the magnetic member 22 and the carrier board 71 .

It is worth noting that, the coil body 52 on the carrier board 71 can not only be designed to be a disconnected structure as shown in FIG. 8 by etching or pasting, but also four groups of bosses can be connected end to end to form an integrated annular structure . In other words, the etched or pasted shape of the coil body 52 shown in FIG. 8 is similar to the shape of the side-wound coil body 52 in FIG. 1 , and the magnetic element 22 can be a single-sided bipolar magnetic element. After the four groups of bosses are connected end to end to form an integrated annular structure, the coil body 52 can also be etched or pasted into the shape of the coil body 52 as shown in FIG. . Of course, the number of the magnetic members 22 disposed opposite to the coil body 52 can be determined according to the design of the driving force.

The present invention also provides a terminal device, including the camera module in the above embodiment. Terminal devices include but are not limited to mobile phones, tablets, or notebook computers, etc. The camera module of the present invention can be installed only by opening a small-sized opening in the terminal device.

The above are only specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art can easily think of changes or substitutions within the technical scope disclosed by the present invention. should be included within the protection scope of the present invention.

Claims (15)

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

a camera assembly (10);

the flexible component is fixedly arranged with the camera assembly (10), the flexible component comprises a carrying part (81) and an elastic part which are connected, and the carrying part (81) carries a photosensitive chip (60) which is arranged opposite to the camera assembly (10);

a drive assembly for generating a drive force;

the driving assembly can drive the carrying part (81) to move, and the carrying part (81) drives the photosensitive chip (60) to move.

2. The camera module according to claim 1, wherein the mounting portion (81) and the elastic portion are integrally formed to be a flexible structure.

3. The camera module according to claim 2, wherein the flexible component includes a flexible circuit board (80), one end of the flexible circuit board (80) is bent, the bent end surface of the flexible circuit board (80) is provided with the mounting portion (81), and the bent connection portion (82) of the flexible circuit board (80) is provided with the elastic portion.

4. The camera module according to claim 2, wherein the flexible component comprises a flexible circuit board (80), the flexible circuit board (80) is provided with a hollowed-out portion, the middle portion of the hollowed-out flexible circuit board (80) is provided with the carrying portion (81), the edge portion of the hollowed-out flexible circuit board (80) is provided with a frame portion (83), and the rest portions of the hollowed-out flexible circuit board (80) are provided with the elastic portions.

5. The camera module according to claim 1, wherein a carrier plate (71) is connected to the mounting portion (81), and the photosensitive chip (60) is connected to the carrier plate (71).

6. The camera module according to claim 5, wherein the driving assembly comprises a magnetic assembly and a coil assembly, the magnetic assembly is fixedly connected to the camera assembly (10), the coil assembly is fixedly connected to the carrier plate (71), and the coil assembly is located within a magnetic field of the magnetic assembly.

7. The camera module according to claim 6, wherein the coil assembly comprises a first bracket (51) and a coil body (52), the first bracket (51) is fixedly connected to the carrier plate (71), and the coil body (52) is wound around the first bracket (51).

8. The camera module according to claim 7, wherein the first frame (51) has a filter (40) disposed therein, and the filter (40) is located between the camera assembly (10) and the photosensitive chip (60).

9. The camera module according to claim 6, wherein the coil assembly comprises a coil body (52) directly disposed on the carrier plate (71).

10. The camera module of claim 6, wherein an elastic member is connected between the magnetic assembly and the coil assembly.

11. The camera module according to claim 6, wherein the magnetic assembly comprises a second bracket (21) and a magnetic member (22), the magnetic member (22) is fixed inside the second bracket (21), and the camera assembly (10) is fixed outside the second bracket (21).

12. The camera module according to claim 11, wherein a position sensor (72) is further connected to the carrier plate (71), a position magnetic member (23) is further fixed inside the second bracket (21), and the position sensor (72) is disposed opposite to the position magnetic member (23).

13. The camera module according to claim 11, wherein a base (90) is connected to the second bracket (21), and the flexible member is fixed to the base (90).

14. The camera module according to claim 1, wherein the mounting portion (81) can drive the photosensitive chip (60) to move along an optical axis of the camera module, and/or the mounting portion (81) can drive the photosensitive chip (60) to move or twist perpendicular to the optical axis of the camera module.

15. A terminal device, characterized by comprising the camera module of any one of claims 1 to 13.

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