CN115811640A

CN115811640A - Circuit board for camera module and corresponding camera module

Info

Publication number: CN115811640A
Application number: CN202111060876.1A
Authority: CN
Inventors: 诸海江; 朱亚飞; 陈永明; 范迪科; 杨祎; 俞丝丝; 劳益杭; 赵开开; 吴雨榕
Original assignee: Ningbo Sunny Opotech Co Ltd
Current assignee: Ningbo Sunny Opotech Co Ltd
Priority date: 2021-09-10
Filing date: 2021-09-10
Publication date: 2023-03-17

Abstract

The invention provides a circuit board for a camera module, which comprises a circuit board main body and at least two side connecting belts, wherein the side connecting belts are arranged on the main body; the side connecting band is led out from the side face of the circuit board main body and is bent upwards, and the side connecting band extends from the side face of the camera module after being bent to form a side connecting band main body; the side connecting strips are provided with hard plates, the outer surface of the hard plate of one of the side connecting strips is provided with a plurality of bonding pads, the hard plate of the other side connecting strip is provided with a plurality of conductive through holes, and the hard plates of the two side connecting strips are arranged in an overlapping way; a solder medium is attached to the sidewalls of the conductive via and contacts the pad through the conductive via. The invention also provides a corresponding camera module. The invention can reduce the moving resistance of the circuit board main body and the photosensitive chip, and has high yield and high production efficiency.

Description

Circuit board for camera module and corresponding camera module

Technical Field

The invention relates to the technical field of camera modules, in particular to a circuit board for a camera module and a corresponding camera module.

Background

The mobile phone camera module is one of the important components of intelligent equipment, and the application range and the application amount of the mobile phone camera module in the market are continuously increased. Along with the progress of technique, no matter work or life are all advocating the intellectuality, and realize that one of the intelligent important prerequisite can realize with external environment's good interaction, wherein realize that an important mode of good interaction is the visual perception, and the module of making a video recording is mainly that the visual perception relies on. It can be said that the camera module has been transformed from a silent intelligent equipment accessory to one of the key components of intelligent equipment.

Along with the imaging quality requirement of the mobile phone camera module is higher and higher, the volume and the weight of the lens are larger and larger, and the requirement on the driving force of a motor (namely an optical actuator) is also higher and higher. However, the current electronic devices (such as mobile phones) also have a great limitation on the size of the camera module, and the occupied size of the motor increases correspondingly with the increase of the lens. In other words, in the trend of the lens barrel toward larger volume and larger weight, the driving force provided by the motor is difficult to increase accordingly. On the premise that the driving force is limited, the heavier the lens is, the shorter the stroke of the motor capable of driving the lens to move is, and the anti-shake capability is affected. On the other hand, the heavier the lens, the slower the motor can drive the lens to move, and the longer the lens reaches the predetermined compensation position, which also affects the anti-shake effect.

In order to overcome the above-mentioned drawbacks, the applicant proposed a dual OIS motor (OIS is an acronym for optical image stabilization, sometimes referred to as optical anti-shake), which has two parts, one of which is used to drive the optical lens to move, and the other is used to drive the photosensitive chip to move, and simultaneously drives the optical lens and the photosensitive chip to move, so as to achieve a better anti-shake effect. However, in the conventional solution, the photosensitive chip is attached to the circuit board, and the connecting band on the circuit board causes a large resistance to the movement of the photosensitive chip. Specifically, in the conventional solution, the circuit board is usually a rigid-flex board, wherein the rigid board is a main body of the circuit board, the flexible board is led out from a side surface of the main body to form a connection belt, and a connector can be disposed at an end (i.e. a free end) of the connection belt for plugging with a main board of a mobile phone. For example, the connector at the end of the connecting band may be pin array-shaped, and the corresponding socket-shaped connector is arranged on the mobile phone motherboard, so that the circuit board of the camera module is electrically connected with the mobile phone motherboard by inserting the pins and the sockets. One end of the connecting band of the traditional circuit board is fixed on the main board of the mobile phone, when the photosensitive chip moves, the main body of the circuit board moves along with the photosensitive chip, and the connecting band on the side surface of the main body of the circuit board is pulled by the connector end of the main body of the circuit board, so that larger resistance is formed. In the anti-shake movement, the resistance of the connecting belt will cause the optical actuator to need to provide a larger driving force, which is not favorable for the miniaturization of the camera module. On the other hand, the resistance of the connection belt is irregular, and may also cause a decrease in the accuracy of the anti-shake movement. Moreover, the dual OIS motor has a more complex motor structure, resulting in an increased wiring area required for the circuit board, which would result in an increased height of the camera module if the conventional scheme of stacking more PCB layers were used to increase the wiring area.

Further, the applicant proposes a solution of leading out side connection tapes on two symmetrical side surfaces of the circuit board main body respectively to overcome the above defects. The surfaces of the two side connecting belts are approximately vertical to the surface of the circuit board main body, the side connecting belts and the circuit board main body form a bending part through a soft board which is bent upwards, and the side connecting belts can be hung on the fixing part of the optical actuator. The new circuit board design scheme can reduce the resistance of the connecting belt for connecting the mobile phone mainboard to the movement of the circuit board main body. However, the new circuit board structure still has many problems of low yield, insufficient production efficiency, etc. during actual assembly. Therefore, it is necessary to further optimize the structure of the circuit board so as to improve the yield and production efficiency of the camera module while reducing the resistance of the connecting belt. For example, the circuit board structure can be designed into a form more suitable for automatic production, so that the production efficiency can be improved through the automatic production. For example, the shapes of the camera module and the circuit board structure thereof are improved by analyzing and searching the main reasons influencing the yield of the camera module, so that the yield of the camera module finished product is improved finally.

Disclosure of Invention

The invention aims to overcome the defects in the prior art and provide a circuit board and a camera module solution which can reduce the moving resistance of a circuit board main body and a photosensitive chip, and have high yield and high production efficiency.

In order to solve the technical problem, the invention provides a circuit board for a camera module, which comprises a circuit board main body and at least two side connecting belts. The circuit board main body is provided with a surface perpendicular to an optical axis of the camera module and a plurality of side faces parallel to the optical axis. The side connecting band is led out from the side face of the circuit board main body and is bent upwards, and the side connecting band extends from the side face of the camera module after being bent to form a side connecting band main body; the side connecting strips are provided with hard plates, the outer surface of the hard plate of one of the side connecting strips is provided with a plurality of bonding pads, the hard plate of the other side connecting strip is provided with a plurality of conductive through holes, and the hard plates of the two side connecting strips are arranged in an overlapping way; a solder medium is attached to the sidewalls of the conductive via and contacts the pad through the conductive via.

Wherein the plurality of sides include a first side, a second side opposite the first side, a third side adjacent the first side, and a fourth side opposite the third side. The side connecting band includes: the first connecting belt comprises a first connecting belt soft board and a first connecting belt hard board, the first connecting belt soft board is led out from the first side face of the circuit board main body, is bent upwards, then extends along the first side face, and is bent to the third side face, the first connecting belt hard board is located on the third side face, the side face of the first connecting belt hard board is connected with the first connecting belt soft board, and the surface of the first connecting belt hard board is parallel to the optical axis; the second connecting band comprises a second connecting band soft board and a second connecting band hard board, the second connecting band soft board is led out from the second side face of the circuit board main body and is bent upwards, then extends along the second side face and is bent to the third side face, the second connecting band hard board is located on the third side face, the side face of the second connecting band hard board is connected with the second connecting band soft board, and the surface of the second connecting band hard board is parallel to the optical axis; wherein, the first hard board of connecting band is located the outside of second hard board of connecting band, first hard board of connecting band has a plurality of electrically conductive through-holes, the surface of second hard board of connecting band has a plurality of pads, electrically conductive through-hole with the pad is connected through welding medium, welding medium sprays under the molten condition and gets into and pass electrically conductive through-hole, and after cooling adhere to the pad with electrically conductive through-hole is with electrically conductive through-hole with the pad electricity is connected.

The first connecting belt hard plate and the second connecting belt hard plate are bonded through a bonding medium; the inner surface of the first connecting band hard sheet and the outer surface of the second connecting band hard sheet have a gap of not more than 100 μm.

Wherein the soldering medium enters the conductive via in the form of a jet stream in a molten state and adheres to a sidewall of the conductive via, and the soldering medium passes through the conductive via and contacts the pad; and the welding medium, after curing, forms a joint across the gap between the inner surface of the first hard face strap and the outer surface of the second hard face strap; a void remains between the welding medium and a portion of the wall of the conductive via.

The hole wall of the conductive through hole is attached with a metal layer, and the metal layer is a metal coating.

Wherein the metal layer is an annular metal layer.

And the metal layer is attached to a part of the hole wall of the conductive through hole to form an unclosed metal layer.

In the first connecting belt hard board, the unclosed metal layers of all the conductive through holes are arranged on the same side of the conductive through holes.

In the first connecting belt hard board, the arc metal layers of all the conductive through holes are arranged on the lower sides of the conductive through holes.

Wherein the soldering medium is tin or a tin-containing soldering material.

The circuit board further comprises a third connecting belt which is formed by leading out and bending outwards from the lower side face of the first connecting belt hard board, the surface of the third connecting belt is perpendicular to the optical axis, the free end of the third connecting belt is provided with a connector, and the connector is suitable for being connected with a main board of electronic equipment carrying the camera module in an inserting mode.

According to another aspect of the present application, there is also provided a camera module, which includes: the optical lens, the optical actuator, the photosensitive chip and the circuit board in any one of the previous schemes are accommodated in the outer frame; the photosensitive chip is fixed on the circuit board body of the circuit board, and the optical actuator is suitable for driving the optical lens and/or the photosensitive chip to move; the optical actuator includes an actuator fixing portion, and the side connection tape is disposed in a gap between the outer frame and the actuator fixing portion.

The photosensitive chip is attached to the upper surface of the circuit board main body; the circuit board upper surface sets up annular base, annular base centers on around the sensitization chip, annular base's top surface is installed in the light filter, the light filter annular base with the circuit board main part constitutes a confined cavity in, and will the sensitization chip encapsulation in the confined cavity.

The circuit board comprises a circuit board main body, a reinforcing plate, a photosensitive chip and a light source, wherein the center of the circuit board main body is provided with a central through hole, the lower surface of the circuit board main body is attached with the reinforcing plate, the photosensitive chip is attached to the upper surface of the reinforcing plate, and the photosensitive chip is arranged in the central through hole; the utility model discloses a circuit board, including circuit board main part, reinforcing plate, circuit board, annular base, circuit board main part upper surface sets up annular base, annular base centers on around the sensitization chip, annular base's top surface is installed in the light filter, the light filter annular base circuit board main part with the reinforcing plate constitutes in a confined cavity, and will the encapsulation of sensitization chip in the confined cavity.

The optical actuator further comprises a chip anti-shake movable part, the circuit board main body, the optical filter, the annular base and a photosensitive packaging body formed by the photosensitive chip are fixed on the chip anti-shake movable part, the photosensitive packaging body is suitable for being driven by the chip anti-shake movable part to move relative to the actuator fixing part, and the first connecting belt hard board and the second connecting belt hard board are both directly or indirectly fixed on the actuator fixing part.

The optical actuator further comprises a chip anti-shake movable part, the circuit board main body, the optical filter, the annular base, the reinforcing plate and a photosensitive packaging body formed by the photosensitive chip are fixed on the chip anti-shake movable part, the photosensitive packaging body is suitable for being driven by the chip anti-shake movable part to move relative to the actuator fixing part, and the first connecting belt hard plate and the second connecting belt hard plate are both directly or indirectly fixed on the actuator fixing part.

The optical actuator further comprises a lens driving movable part, and the optical lens is mounted on the lens driving movable part and is suitable for moving relative to the actuator fixing part under the driving of the lens driving movable part.

The outer side face of the actuator fixing part is provided with a convex column protruding towards the outside, the hard plate of the lateral connecting belt is provided with a hanging hole, and the convex column penetrates through the hanging hole so as to hang the lateral connecting belt on the actuator fixing part.

Compared with the prior art, the application has at least one of the following technical effects:

1. in the application, the circuit board main body of the camera module is provided with a plurality of side connecting belts led out from different sides, the side connecting belts are connected to the side face of the camera module, the hard board of the side connecting belts can be hung on the actuator fixing part (the actuator fixing part can comprise the chip anti-shake fixing part and the lens driving fixing part which are fixed together), the design can remarkably reduce the resistance of the connecting belts to the movement of the circuit board main body, and the camera module is particularly suitable for the camera module with the chip anti-shake function. Furthermore, in the present application, the electrical connection at the closure of the side connection band is realized in an innovative non-plugging manner, so as to prevent the imaging quality of the camera module from being degraded due to the lateral extrusion on the optical actuator or the optical element during the plugging process.

2. In the application, for two side connecting bands needing to be electrically connected, a welding medium can be injected from the outer side in the form of a high-temperature jet flow and penetrates through the conductive through hole, and the welding medium can be attached to the side wall of the conductive through hole and penetrates through the conductive through hole to contact with the bonding pad after being cooled, so that the two side connecting bands on the side surfaces are electrically connected in a non-plug-in mode. Herein, for various plate-like components arranged on the side of the camera module, the side close to the optical axis of the camera module is the inner side, and the side departing from the optical axis is the outer side.

3. In some embodiments of the present application, the conductive via may be disposed with a conductive layer that is easily merged with the soldering medium only at a partial section of the via wall, so that the soldering medium may be attached to only a partial section of the via wall of the conductive via, and the remaining sections leave a gap, so as to observe whether the soldering medium contacts the pad from the outside through the gap, thereby helping to improve the yield.

4. In some embodiments of the present application, the two hard plates of the side connection tape may be bonded by a double-sided adhesive tape, and the two hard plates may have a gap of 100 μm or less. That is to say, in the welding process, need not rely on outside apparatus to compress tightly these two hardboards, help avoiding leading to making an image quality of making a video recording module to the extrusion of optical actuator or optical element side direction and descend, the equipment of still being convenient for simultaneously helps promoting production efficiency.

5. In some embodiments of the present application, the welding medium does not block the conductive via, the welding medium not being attached to the wall of the conductive via on at least a section of the wall of the conductive via. Thus, the bonding medium does not block the conductive through hole, so that the bonding pad of the hard board positioned at the inner side can be exposed to the outside, thereby providing a viewing path of the bonding pad state. The operator can visually check whether the bonding medium is in effective contact with the bonding pad, and if the bonding medium is not in effective contact with the bonding pad, the bonding medium is judged to be defective (NG product).

6. In some embodiments of the application, the image of the pad area can be shot by the shooting device arranged on the outer side through the gap between the hole wall of the conductive through hole and the welding medium, whether the welding medium contacts the pad or not is automatically identified based on an AI algorithm, and then measures are taken to improve the yield.

Drawings

Fig. 1 shows a perspective exploded view of a camera module according to an embodiment of the present application;

fig. 2 is a schematic perspective view illustrating a camera module according to an embodiment of the present application;

FIG. 3 shows a schematic perspective view of a chip driving portion of an optical actuator in one embodiment of the present application;

FIG. 4 illustrates a perspective view of a lens driving portion of an optical actuator in one embodiment of the present application;

FIG. 5 illustrates a perspective view of an optical actuator in one embodiment of the present application;

FIG. 6 shows a schematic view of an optical actuator in one embodiment of the present application from a bottom perspective;

FIG. 7 is a schematic perspective view of a suspension circuit board and a photosensitive chip mounted thereon according to an embodiment of the present application;

FIG. 8 is a perspective cross-sectional view of a suspension board and a light sensing chip mounted thereon according to an embodiment of the present application;

FIG. 9 is a schematic top view of a suspension circuit board and a light sensing chip mounted thereon according to an embodiment of the present application;

fig. 10 illustrates a schematic top view of a suspended wiring board in a flattened state in one embodiment of the present application;

FIG. 11 is a perspective view of a camera module according to an embodiment of the present application with an outer frame removed; the positional relationship of the suspension board and the optical actuator inside the outer frame is revealed in the figure;

FIG. 12a is a schematic diagram of an inner and outer hard plate electrical connection with conductive vias having annular metal layers in one embodiment of the present application;

FIG. 12b is a schematic diagram of the electrical connection of the inner and outer rigid plates with an unsealed metal layer in another embodiment of the present application;

FIG. 12c shows a schematic view of a rigid board with a conductive via that does not enclose a metal layer in another embodiment of the present application;

FIG. 13 illustrates a top view of an embodiment of the present application in a flattened state of a suspended circuit board with a stiffener attached;

fig. 14 is a schematic side view of a stiffener and a suspension board in a post-bending state according to an embodiment of the present disclosure;

fig. 15 is a perspective view of a reinforcing plate and a suspension type wiring board in a bent state according to an embodiment of the present application;

FIG. 16 is a perspective view of a camera module with a side recess on a circuit board according to an embodiment of the present disclosure;

FIG. 17 illustrates a partial schematic view of the electrical connection of the board-side recesses to the conductive pins of the optical actuator in one embodiment of the present application;

FIG. 18 illustrates a perspective view of a camera module with an outer frame, in accordance with an embodiment of the present application;

fig. 19 is a schematic perspective view of a camera module with a frame cover added in an embodiment of the present application;

FIG. 20 illustrates the position of the frame bottom plate and the suspension circuit board in one embodiment of the present application;

fig. 21 shows the position relationship of the conductive cloth, the frame base plate and the suspension type wiring board in one embodiment of the present application.

Detailed Description

For a better understanding of the present application, various aspects of the present application will be described in more detail with reference to the accompanying drawings. It should be understood that the detailed description is merely illustrative of exemplary embodiments of the present application and does not limit the scope of the present application in any way. Like reference numerals refer to like elements throughout the specification. The expression "and/or" includes any and all combinations of one or more of the associated listed items.

It should be noted that the expressions first, second, etc. in this specification are used only to distinguish one feature from another feature, and do not indicate any limitation on the features. Thus, a first body discussed below may also be referred to as a second body without departing from the teachings of the present application.

In the drawings, the thickness, size, and shape of an object have been slightly exaggerated for convenience of explanation. The figures are purely diagrammatic and not drawn to scale.

It will be further understood that the terms "comprises," "comprising," "includes," "including" and/or "including," when used in this specification, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof. Moreover, when a statement such as "at least one of" appears after a list of listed features, the entirety of the listed features is modified rather than modifying individual elements in the list. Furthermore, when describing embodiments of the present application, the use of "may" mean "one or more embodiments of the present application. Also, the term "exemplary" is intended to refer to an example or illustration.

As used herein, the terms "substantially," "about," and the like are used as words of table approximation, not as words of table degree, and are intended to account for inherent deviations in measured or calculated values that would be recognized by one of ordinary skill in the art.

Unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. It will be further understood that terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the relevant art and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein.

It should be noted that, in the present application, the embodiments and features of the embodiments may be combined with each other without conflict.

The invention is further described below with reference to the accompanying drawings and specific embodiments.

As shown in fig. 1 to 21, a camera module 1 according to an embodiment of the present application is illustrated, which includes a photosensitive assembly 30, an optical lens 10 held on a photosensitive path of the photosensitive assembly 30, a driving assembly 20 for driving the photosensitive assembly 30 to move, and an outer frame 40 for packaging. The bottom surface of the driving component 20 is fixedly connected with the photosensitive component 30 to drive the photosensitive component 30 to move, a through hole is formed in the middle of the driving component 20, the through hole of the driving component 20 is used for accommodating and fixing the optical lens 10 and providing a light passing channel for the optical lens 10, so that light refracted by the optical lens 10 passes through and enters the photosensitive component 30. Wherein, the outer frame 40 encloses the driving component 20 and the photosensitive component 30 therein, and a fixing position of the driving component 20 is provided to fix the driving component 20, so that the photosensitive component 30 is suspended in the outer frame 40.

The optical lens 10 is held on a photosensitive path of the photosensitive assembly 30 to collect external imaging light. Accordingly, the optical lens 10 includes a lens barrel 11 and a lens group 12 installed in the lens barrel 11, where the lens group 12 includes at least one optical lens, and the number of the at least one optical lens is not limited.

The driving assembly 20 comprises a chip driving part 21, the chip driving part 21 comprises a chip anti-shake part 211, and the chip anti-shake part 211 is suitable for driving the photosensitive assembly 30 to translate in the directions of the X-axis and the Y-axis and/or rotate around the direction of the Z-axis so as to realize translation anti-shake and/or rotation anti-shake of the photosensitive assembly 30; alternatively, the chip anti-shake portion 211 is adapted to drive the photosensitive assembly 30 to rotate around the X-axis direction and around the Y-axis direction, so as to realize inclination anti-shake of the photosensitive assembly 30. In one embodiment of the present application, the X-axis direction and the Y-axis direction are perpendicular to each other, and the Z-axis direction is perpendicular to a plane in which the X-axis direction and the Y-axis direction are located, in other words, the X-axis, the Y-axis, and the Z-axis constitute a three-dimensional coordinate system.

The chip anti-shake portion 211 includes a chip anti-shake fixing portion 2111, a chip anti-shake movable portion 2112, and a driving element for driving the chip anti-shake movable portion 2112 to move relative to the chip anti-shake fixing portion 2111, and the driving element is connected to the chip anti-shake movable portion 2112 and the chip anti-shake fixing portion 2111, respectively. The chip anti-shake movable portion 2112 is fixed to the photosensitive element 30, so that the driving element drives the photosensitive element 30 fixed to the chip anti-shake movable portion 2112 to move. Further, the chip anti-shake portion 211 may further include a suspension system, through which the chip anti-shake movable portion 2112 is suspended in the chip anti-shake fixing portion 2111, and the suspension system may be implemented as a spring, a suspension wire, a ball, and the like, and the embodiment of the present application is not limited by the type of the suspension system.

In an embodiment of the present application, the chip anti-shake portion 211 may be a driving motor of a voice coil motor, a piezoelectric motor, an SMA (Shape Memory Alloy) motor, or the like.

When the chip anti-shake portions 211 are implemented as voice coil motors, the driving elements are implemented as coil-magnet pairs, i.e., the driving force that drives the chip anti-shake movable portions 2112 to move is generated by the electromagnetic action between the coils and the magnets. The coil and the magnet of the coil-magnet pair are adapted to be provided on the chip anti-shake movable portion 2112 and the chip anti-shake fixing portion 2111, respectively. That is, the coil of the coil-magnet pair may be fixedly disposed in the chip anti-shake movable portion 2112, and the magnet of the coil-magnet pair may be fixedly disposed in the chip anti-shake fixing portion 2111, so that the driving force demand for the driving element can be reduced; the magnets of the coil-magnet pairs may be fixed to the chip anti-shake movable portion 2112, and the coils of the coil-magnet pairs may be fixed to the chip anti-shake fixed portion 2111, so that the energization of the coils can be simplified. The number of the coil-magnet pairs may be one or more, and the coil-magnet pairs are disposed around the chip anti-shake movable portion 2112, and preferably, the number of the coil-magnet pairs may be two, three, or four, and are located on the adjacent side surfaces of the chip anti-shake movable portion 2112.

When the chip anti-shake portion 211 is implemented as an SMA motor, the driving element is implemented as an SMA (shape memory alloy) wire, which is an alloy material that can completely eliminate its deformation at a low temperature after being heated to a high temperature and restore its original shape before the deformation. For example, after a finite amount of plastic deformation of the shape memory alloy below the transformation temperature, the shape memory alloy may be returned to its original shape prior to the deformation by heating, which may be accomplished by energizing the SMA wire.

As shown in fig. 3, in an embodiment of the present application, a set of SMA wires 2113 is respectively disposed on four sides of the chip anti-vibration part 211, each set of SMA wires 2113 includes at least one SMA wire, adjacent two of the four sides of the chip anti-vibration part 211 are disposed vertically (substantially vertically), and opposite two of the four sides of the chip anti-vibration part 211 are disposed in parallel (substantially parallel). Specifically, on each of four sides of the chip anti-shake portion 211, the chip anti-shake fixing portion 2111 has a first fixing end 21111, the chip anti-shake movable portion 2112 has a second fixing end 21121, and two ends of the set of SMA wires 2113 are fixed to the chip anti-shake fixing portion 2111 through the first fixing end 21111 and the chip anti-shake movable portion 2112 through the second fixing end 21121, respectively, so that the set of SMA wires 2113 drive the chip anti-shake movable portion 2112 to move relative to the chip anti-shake fixing portion 2111, and thus the four sets of SMA wires 2113 located on the four sides of the chip anti-shake portion 211 drive the chip anti-shake movable portion 2112 to translate relative to the chip anti-shake fixing portion 2111 in perpendicular X-axis and Y-axis directions, or also drive the chip anti-shake portion 2112 to rotate relative to the chip anti-shake fixing portion 2111 about a Z-axis perpendicular to a plane of the X-axis and Y-axis, so that the chip anti-shake portion 211 can drive the photosensitive assembly 30 connected and fixed to the chip anti-shake movable portion 2112 to translate in X-shake direction and/or rotate about the Z-axis direction. Further, the first fixing end 21111 and the second fixing end 21121 may also have a conductive function to provide current to the SMA wire 2113 to achieve heating of the SMA wire, so that the SMA wire is deformed.

The chip anti-shake portion 211 further includes a chip anti-shake electrical connection portion 2114, and the chip electrical connection point is electrically connected to a driving element, i.e., the SMA wire 2113, so that a driving power supply of the chip anti-shake portion 211 is provided through the chip anti-shake electrical connection portion 2114. The chip anti-shake electrical connection portion 2114 is located on the chip anti-shake portion 211 side, and further includes a plurality of pins 21141, for example, the chip anti-shake electrical connection portion 2114 includes 5 pins 21141 located on the chip anti-shake portion 211 side, and the pins 21141 are spaced from each other and are fixed on the chip anti-shake fixing portion 2111 side of the chip anti-shake portion 211 in an inverted L shape.

The driving assembly 20 further comprises a lens driving portion 22, and the lens driving portion 22 is adapted to drive the optical lens 10 to move. The lens driving portion 22 includes a lens focusing portion 221, and the lens focusing portion 221 is adapted to drive the optical lens 10 to translate in the Z-axis direction, so as to adjust the distance between the optical lens 10 and the photosensitive assembly 30, thereby implementing the focusing function of the optical lens 10. Further, the lens driving part 22 may further include a lens anti-shake part 222, wherein the lens anti-shake part 222 is adapted to drive the optical lens 10 to translate in the X-axis and Y-axis directions and/or rotate around the Z-axis direction, so as to achieve translational anti-shake and/or rotational anti-shake of the optical lens 10; alternatively, the lens anti-shake section 222 is adapted to drive the optical lens 10 to rotate around the X-axis direction and around the Y-axis direction to realize inclination anti-shake of the optical lens 10. Note that the lens driving part 22 may include only the lens focusing part 221 or the lens anti-shake part 222; the lens driving part 22 may further include both the lens focusing part 221 and the lens anti-shake part 222, so that the lens driving part 22 may implement not only a lens focusing function but also a lens anti-shake function.

In an embodiment of the present application, the lens focusing part 221 and the lens anti-shake part 222 may be a driving motor of a voice coil motor, a piezoelectric motor, an SMA (Shape Memory Alloy) motor, or the like.

As shown in fig. 4, in one embodiment of the present application, the lens driving portion 22 includes a lens driving fixing portion 2201, a lens driving movable portion 2202, and a driving element (not shown) for driving the lens driving movable portion 2202 to move relative to the lens driving fixing portion 2201, the driving element being connected to the lens driving movable portion 2202 and the lens driving fixing portion 2201, respectively. The lens driving movable portion 2202 is fixed to the optical lens 10, so that the driving element drives the optical lens 10 fixed to the lens driving movable portion 2202 to move. Further, the lens driving part 22 may further include a suspension system (not shown) by which the lens driving movable part 2202 is suspended in the lens driving fixing part 2201, and the suspension system may be implemented as one or more of a leaf spring, a suspension wire, a ball, etc., and the present application is not limited by the type of suspension system.

In an embodiment of the present application, the driving element drives the lens driving movable part 2202 to move relative to the lens driving fixing part 2201, so as to realize a lens focusing or a lens anti-shake function, and thus the driving element, the lens driving movable part 2202 and the lens driving fixing part 2201 constitute the lens focusing part 221 or the lens anti-shake part 222. Alternatively, the lens driving movable part 2202 may further include a first lens driving movable part 2202, a second lens driving movable part 2202 located inside the first lens driving movable part 2202, and a driving element for driving the second lens driving movable part 2202 to move relative to the first lens driving movable part 2202. Thus, the driving element located between the lens driving fixing portion 2201 and the lens driving movable portion 2202 drives the lens driving movable portion 2202 to move to implement a lens anti-shake function, and the driving element located between the first lens driving movable portion 2202 and the second lens driving movable portion 2202 to move to implement a lens focusing function; alternatively, the driving element located between the lens driving fixing portion 2201 and the lens driving movable portion 2202 may drive the lens driving movable portion 2202 to move so as to realize a lens focusing function, and the driving element located between the first lens driving movable portion 2202 and the second lens driving movable portion 2202 may drive the second lens driving movable portion 2202 to move so as to realize a lens anti-shake function.

The lens driving portion 22 includes a lens driving electrical connection portion 2203 located on a side surface, and the lens driving electrical connection portion 2203 is electrically connected with a driving element of the lens driving portion 22 and provides a driving power for the lens driving portion 22. The lens driving electrical connection portion 2203 comprises a plurality of lens driving pads 22031, the lens driving pads 22031 are arranged in two rows to reduce the length of the lens driving electrical connection portion 2203, for example, the number of the lens driving pads 22031 in the upper row is 4, and the number of the lens driving pads 22031 in the lower row is also 4.

The lens driving fixing portion 2201 of the lens driving part 22 further comprises at least two suspension portions located at the side of the lens driving fixing portion 2201, and in one embodiment of the present application, the at least two suspension portions are located at the same side of the lens driving fixing portion 2201 as the lens driving electrical connection portion 2203. The number of the at least two hanging portions may be two, which are a first hanging portion 22011 and a second hanging portion 22012, respectively, and the first hanging portion 22011 and the second hanging portion 22012 extend outward from the lens driving fixing portion 2201 at both sides of the lens driving electrical connection portion 2203, respectively. The function of the at least two hanging portions will be expanded in the following description of the photosensitive assembly 30, and will not be described herein again.

In the present application, the lens driving part 22 and the chip driving part 21 may be separated from each other or fixed to each other, and the lens driving part 22 may be fixed to the chip driving part 21 by bonding or integrally molding the lens driving fixing portion 2201 and a chip driving fixing portion (e.g., the chip anti-shake fixing portion 2111) of the chip driving part 21.

Fig. 5 to 6 show that the driving assembly 20 may include the lens driving part 22 and the chip driving part 21 in the present application. The four corner regions of the chip driving portion 21 are recessed inward to form four recesses, so that the four corner regions of the lens driving portion 22 protrude downward to form four protrusions extending into the four recesses of the chip driving portion 21, wherein three of the four protrusions of the lens driving portion 22 are respectively fixed with a sensing magnet 2311, that is, the four corner regions of the lens driving portion 22 are fixedly provided with three sensing magnets 2311, the sensing magnets 2311 are used for providing a magnetic field for a position sensor 2312 on the photosensitive element 30 shown in fig. 7, so as to detect the displacement of the photosensitive element 30, and the position sensor 2312 is adapted to determine the direction and distance of the movement by sensing the change of the magnetic field. In other embodiments of the present application, the number of the sensing magnets 2311 may be one, two, four, or other numbers.

Fig. 5 further shows that the chip anti-shake electrical connections 2114 of the chip driving portion 21 and the lens driving electrical connections 2203 of the lens driving portion 22 are located on opposite sides of the driving assembly 20. Fig. 6 further shows that the lens focusing part 221 of the lens driving part 22 is located inside the lens anti-shake part 222, and the size of the through hole in the middle of the chip driving part 21 is larger than that of the through hole in the middle of the lens driving part 22, so as to provide a light path that is not blocked by the optical lens 10, thereby reducing the occurrence of the dark corner.

As shown in fig. 7-12, in one embodiment of the present application, the photosensitive assembly 30 includes a circuit board 31, a photosensitive chip 32, a base 34, and a filter element 35.

The photosensitive chip 32 includes a photosensitive region 321 and a non-photosensitive region 322321, and the photosensitive chip 32 is electrically connected to the circuit board 31 through a photosensitive chip pad located in the non-photosensitive region 322321, for example, the photosensitive chip 32 may be electrically connected to the circuit board 31 through a gold wire bonding, a soldering, an FC process (flip chip), an RDL (redistribution layer technology), and the like. The photosensitive chip 32 is suitable for being fixed on the upper surface of the circuit board 31 through an adhesive medium (the side of the circuit board 31 facing the lens is defined as the upper surface), or the photosensitive chip 32 is disposed in the circuit board through hole 3111 of the circuit board 31, so as to reduce the influence of the thickness of the circuit board 31 on the thickness of the photosensitive assembly 30, and thus reduce the height of the camera module.

The base 34 is disposed on the chip light-sensing portion of the circuit board 31 for supporting other components. In a specific example of the present application, the base 34 is implemented as a separately molded plastic bracket that is attached to the surface of the circuit board 31 by an adhesive medium and used to support other components. Of course, in other examples of the present application, the base 34 can also be formed on the circuit board 31 in other manners, for example, the base 34 is implemented as a molded base that is integrally formed on the circuit board 31 at a predetermined position by a molding process, and this is not limited by the present application.

In one embodiment of the present application, the filter element 35 is maintained in a photosensitive path of the photosensitive chip 32 for filtering the imaging light entering the photosensitive chip 32. In a specific example, the filter element 35 is mounted on the base 34 and corresponds to at least the photosensitive region 321 of the photosensitive chip 32. It is worth mentioning that in other examples of the present application, the filter element 35 may be indirectly mounted on the base 34 through other supports. In other examples of the present application, the filter element 35 may be mounted at other positions of the image pickup module 1, for example, the filter element 35 is formed in the optical lens 10 (for example, attached as a layer of filter film to a surface of one optical lens of the optical lens 10), and the present application is not limited thereto.

The wiring board 31 includes a wiring board main body 311, a connection tape, and a connector portion 314. The circuit board main body 311 is used for mounting and electrically connecting the photosensitive chip 32 and the electronic element 33, the electronic element 33 includes passive devices such as capacitors and resistors, and active devices such as driving chips, the connecting band is electrically connected and fixed with the circuit board main body 311 and the connector portion 314, and the connector portion 314 is used for being electrically connected with a mobile electronic device to derive image information output by the photosensitive chip 32.

The four corner regions of the circuit board main body 311 of the circuit board 31 are further fixed and electrically connected with position sensors 2312 for sensing the movement of the photosensitive assemblies 30, the number and the positions of the position sensors 2312 correspond to the sensing magnets 2311 located in the driving assembly 20, for example, when the sensing magnets 2311 are respectively arranged at the three corners of the four corner regions of the driving assembly 20, the position sensors 2312 are respectively fixed and electrically connected at the positions of the photosensitive chips 32 of the circuit board 31 corresponding to the three corners of the four corner regions of the driving assembly 20.

Referring to fig. 7-8, in a specific example of the present application, the base 34 is fixed to the circuit board main body 311 of the circuit board 31 by an adhesive medium and encapsulates the photo sensor chip 32 therein, the photo sensor chip 32 is located inside the base 34 (i.e. on a side offset to the photo sensor chip 32), and the electronic component 33 is located outside the base 34, in other words, the base 34 encapsulates only the photo sensor chip 32. Of course, in other examples of the present application, the base 34 may further encapsulate the photosensitive chip 32 and a portion of the electronic component 33 therein, and another portion of the electronic component 33 is located outside the base 34; alternatively, the base 34 may also encapsulate the photosensitive chip 32 and all the electronic components 33 therein. When the base 34 only encapsulates the photosensitive chip 32 therein, the base 34 can prevent dust possibly existing on the electronic component 33 from contaminating the photosensitive chip 32.

Further, as shown in fig. 7 to 9, the number of the electronic components 33 is plural, and the electronic components 33 are distributed around the photosensitive chip 32 and the base 34, and the plural electronic components 33 are distributed in a circular area, which is related to the shape of the chip anti-shake movable portion 2112 of the chip anti-shake section 211. The chip anti-shake movable portion 2112 has a cylindrical through hole, and when the chip anti-shake movable portion 2112 is fixed to the circuit board main body 311, the space reserved on the circuit board 31 is small, so that the base 34 is used only for encapsulating the photosensitive chip 32, the plurality of electronic components 33 are distributed around the base 34, and further the electronic components 33 can be distributed in a circular area. With the above-described configuration, the base 34 does not need to enclose the electronic component 33, and thus the longitudinal dimension, the width dimension, and the height dimension of the base are reduced, and the cylindrical through holes of the chip anti-shake movable portion 2112 do not need to be further enlarged by the size of the base 34 having a rectangular shape, and a plurality of electronic components 33 can be distributed in the cylindrical through holes of the base 34 and the chip anti-shake movable portion 2112, and thus the lateral dimension of the image pickup module can be reduced. The upper surface of the circuit board main body 311 may further be provided with a dust-catching glue for catching dirt such as dust in the camera module, for example, the dust-catching glue may be annularly disposed on the periphery of the circular region or cover the plurality of electronic components 33.

Further, a circuit board through hole 3111 is formed in the middle of the circuit board main body 311, preferably, the circuit board through hole 3111 is similar to the photosensitive chip 32 in shape, for example, the circuit board through hole 3111 is rectangular and is configured to accommodate the photosensitive chip 32, so as to reduce the height of the photosensitive assembly 30.

Further, the photosensitive assembly 30 further includes a reinforcing plate 37, the reinforcing plate 37 is fixed to the back surface of the circuit board main body 311 of the circuit board 31 (referring to a side of the circuit board 31 away from the lens, opposite to the upper surface of the circuit board main body) through an adhesive medium to provide a supporting and reinforcing function for the circuit board main body 311, and the reinforcing plate 37 may be a metal plate such as a steel plate, a copper plate, or a plastic plate, which is not limited in this application. In a specific example of this application, circuit board main part 311 has a circuit board through-hole 3111, stiffening plate 37 is fixed in the back of circuit board main part 311, stiffening plate 37 with circuit board main part 311 forms a recess, photosensitive chip 32 is fixed in through the medium of gluing stiffening plate 37 and holding circuit board main part 311 in circuit board through-hole 3111, stiffening plate 37 thickness can be thinner than circuit board main part 311 to reduce photosensitive element 30 height, just reinforcing plate 37 can provide photosensitive chip 32 is than circuit board main part 311 is more smooth be used for the fixed surface of bonding.

The circuit board main body 311 may be a hard board or a soft board, and the connection band electrically connected to the photosensitive chip 32 is a rigid-flex board. Specifically, the connection tape includes a first connection tape 312 and a second connection tape 313, the first connection tape 312 and the second connection tape 313 are respectively led out from two opposite side surfaces of the circuit board main body 311 (for convenience of description, these two opposite side surfaces may be referred to as a first side surface 301 and a second side surface 302, adjacent to the first side surface 301 and the second side surface 302 are a third side surface 303 and a fourth side surface 304, the third side surface 303 and the fourth side surface 304 are oppositely distributed, the first side surface 301, the third side surface 303, the second side surface 302 and the fourth side surface 304 are distributed in a clockwise direction), and are bent upward (upward is a direction pointing away from the circuit board main body 311), and the first connection tape 312 further extends along the first side surface 301 toward the third side surface 303 and is bent toward the third side surface 303, the second connection tape 313 further extends along the second side surface 302 toward the third side surface 303 and is bent toward the first side surface 303, so that the first connection tape 312 and the second connection tape 313 are fixed around the third side surface 303, the first connection tape 312 and the third side surface 303 are electrically connected to the circuit board main body 303, the first connection tape 312, the connection tape 312 and the first connection tape 312 and the third connection tape 312 are electrically connected to the first connection tape 303. Through the connecting band structure and the setting mode, when the driving component 20 drives the circuit board main body 311 to move, the resistance generated by the connecting band is relatively less, and the problem that the deflection of the connecting band relative to the circuit board main body 311 on the same plane can generate larger resistance in the prior art is solved.

The connector portion 314 may be a hard board or a soft board, a connector 36 is electrically connected to an upper surface or a back surface of the connector portion 314, and the camera module 1 is electrically connected to a mobile electronic device through the connector 36 to derive image information output by the photosensitive chip 32. In one example of the present application, the connector portion 314 may further electrically connect other electronic components to reduce the number of electronic components 33 electrically connected to the wiring board main body 311.

Specifically, the first connection belt 312 includes a first connection belt soft board 3121, a first connection belt hard board 3122, and a third connection belt soft board 3123, the first connection belt soft board 3121 electrically connects the circuit board main body 311 and the first connection belt hard board 3122, respectively, and the third connection belt soft board 3123 electrically connects the first connection belt hard board 3122 and the connector portion 314, respectively. The first flexible connecting tape sheet 3121 has a first bent portion 31211 and a second bent portion 31212, the first flexible connecting tape sheet 3121 is connected to the circuit board main body 311 by the first bent portion 31211 and bent upward from the first lateral surface 301 of the circuit board main body 311, and is bent from the first lateral surface 301 to the third lateral surface 303 by the second bent portion 31212, so that the first flexible connecting tape sheet 3121 is connected to the first rigid connecting tape sheet 3122 located at the third lateral surface 303. The third soft board 3123 includes a third bent portion 31231, and the third soft board 3123 is connected to the lower side of the first hard board 3122 by the third bent portion 31231 and bent from the lower side of the first hard board 3122 to a direction away from the circuit board main body 311, so that the third soft board 3123 is connected to the connector portion 314.

That is, the first bending portion 31211 is located near a position where the first side surface 301 and the bottom surface of the circuit board main body 311 intersect, the second bending portion 31212 is located near a position where the first side surface 301 and the third side surface 303 intersect, and the third bending portion 31231 is located near a position where the third side surface 303 and the bottom surface of the circuit board main body 311 intersect.

The second connection band 313 includes a second connection band soft board 3131 and a second connection band hard board 3132, and the second connection band soft board 3131 is electrically connected to the circuit board main body 311 and the second connection band hard board 3132, respectively. The second soft connecting belt plate 3131 has a fourth bending portion 31311 and a fifth bending portion 31312, the second soft connecting belt plate 3131 is connected to the main circuit board body 311 through the fourth bending portion 31311 and is bent upward from the second side surface 302 of the main circuit board body 311, and is bent from the first side surface 301 to the third side surface 303 through the fifth bending portion 31312, so that the second soft connecting belt plate 3131 is connected to the second hard connecting belt plate 3132 located on the third side surface 303.

That is, the fourth bending portion 31311 is located near the intersection of the second side surface 302 and the bottom surface of the main circuit board body 311, and the fifth bending portion 31312 is located near the intersection of the second side surface 302 and the third side surface 303.

The direction perpendicular to the first side surface 301 or the second side surface 302 is an X-axis direction, the direction perpendicular to the third side surface 303 and the fourth side surface 304 is a Y-axis direction, the X-axis direction is perpendicular to the Y-axis direction, and the direction perpendicular to the plane of the X-axis direction and the Y-axis direction (i.e., the plane of the circuit board main body 311) is a Z-axis direction. The first bending portion 31211 and the fourth bending portion 31311 are adapted to be bent in the Y-axis direction to reduce resistance of the connection tape when the circuit board main body 311 is driven by the driving assembly 20 to move in the X-axis direction; the second bending portion 31212 and the fifth bending portion 31312 are adapted to bend along the Z-axis direction to reduce resistance of the connection belt when the circuit board main body 311 is driven by the driving component 20 to move in the Y-axis direction. The first bending portion 31211, the fourth bending portion 31311, the second bending portion 31212, and the fifth bending portion 31312 are further adapted to reduce resistance of a connection belt (including the first connection belt 312 and the second connection belt 313) when the circuit board main body 311 is driven by the driving assembly 20 to rotate around the X-axis direction, the Y-axis direction, or the Z-axis direction.

The first connecting band soft plate 3121 further includes two first horizontal portions 31213 and one first inclined portion 31214 between the first bent portion 31211 and the second bent portion 31212. The first inclined portion 31214 connects the two first horizontal portions 31213, and the first connecting strip flexible sheet 3121 extends from the first bent portion 31211 to the second bent portion 31212 and upwardly by the first inclined portion 31214, there is a height difference between the two first horizontal portions 31213; and/or, the first connecting belt soft plate 3121 extends from the first bending portion 31211 to the second bending portion 31212 and extends outward (away from the main body of the circuit board), a space exists between the planes of the two first horizontal portions 31213, and the planes of the two first horizontal portions 31213 are parallel to each other or intersect with each other. With the above structure, a space for avoiding interference is provided to avoid the driving assembly 20 or the outer frame 40 from interfering with each other, and it is helpful to reduce resistance when the driving assembly 20 drives the circuit board main body 311 to move.

The second connecting strap soft board 3131 further includes two second horizontal portions 31223 and one second inclined portion 31224 between the fourth bent portion 31311 and the fifth bent portion 31312. The second inclined portion 31224 connects the two second horizontal portions 31223, and the second connecting tape soft board 3131 extends from the fourth bent portion 31311 to the fifth bent portion 31312 and upwardly through the second inclined portion 31224, there being a height difference between the two second horizontal portions 31223; and/or, the second soft connecting tape 3131 is extended from the fourth bent portion 31311 to the fifth bent portion 31312 and outward (away from the main body of the circuit board) by the second inclined portion 31224, there is a gap between the planes of the two second horizontal portions 31223, and the planes of the two second horizontal portions 31223 are parallel to each other or intersect with each other. With the above structure, a space for avoiding interference is provided to avoid the driving assembly 20 or the outer frame 40 from interfering with each other, and it is helpful to reduce resistance when the driving assembly 20 drives the circuit board main body 311 to move.

Further, in one embodiment of the present application, a shaping layer is attached to the inner and/or outer sides of the first bent portion 31211 and the fourth bent portion 31311 to keep the first connecting strap 312 bent at the first bent portion 31211 and the second connecting strap 313 bent at the fourth bent portion 31311; a shaping layer is attached to the inner and/or outer sides of the second bent portion 31212 and the fifth bent portion 31312 to keep the first connecting band 312 bent at the second bent portion 31212 and the second connecting band 313 bent at the fifth bent portion 31312. The shaping layer can be copper foil or other parts with thin thickness and shaping function.

Further, fig. 10 shows a bottom surface of the wiring board 31 in a flattened state in one embodiment of the present application, and the wiring board 31 includes a wiring board main body 311, a first connection tape 312, a second connection tape 313, and a connector portion 314. The circuit board main body 311 has a rectangular circuit board through hole 3111 for accommodating the photosensitive chip 32, the first side surface 301 of the circuit board main body 311 is electrically connected to the first connecting band 312, and the second side surface 302 of the circuit board main body 311 is electrically connected to the second connecting band 313.

The first connecting belt 312 includes the first connecting belt soft board 3121, a first connecting belt hard board 3122, and the third connecting belt soft board 3123, the first connecting belt soft board 3121 includes a first bent portion 31211 and a second bent portion 31212, the first connecting belt soft board 3121 is connected to the circuit board main body 311 by the first bent portion 31211 and is connected to the first connecting belt hard board 3122 by the second bent portion 31212, and the first connecting belt soft board 3121 is adapted to be bent by bending the first bent portion 31211 and the second bent portion 31212; the third soft connecting belt plate 3123 includes a third bending portion 31231, the third soft connecting belt plate 3123 is connected to the first hard connecting belt plate 3122 through the third bending portion 31231, and the third soft connecting belt plate 3123 is adapted to be bent by bending the third bending portion 31231.

The second connection belt 313 includes the second connection belt soft board 3131 and the second connection belt hard board 3132, and the second connection belt soft board 3131 includes a fourth bent portion 31311 and a fifth bent portion 31312. The second flexible connecting tape 3131 is connected to the circuit board main body 311 by the fourth bent portion 31311, and the second flexible connecting tape 3131 and the first flexible connecting tape 3121 are distributed on two opposite sides of the circuit board main body 311; the second soft connecting band 3131 is connected to the second hard connecting band 3132 through the fifth bending portion 31312. The second connecting tape soft sheet 3131 is adapted to be bent by bending the fourth bent portion 31311 and the fifth bent portion 31312.

The first connection tape hard sheet 3122 and the second connection tape hard sheet 3132 are fixed and electrically connected to the third side 303 of the circuit board main body 311 by bending the first connection tape soft sheet 3121 and the second connection tape soft sheet 3131. Fig. 11 shows a structure of the first flexible connecting tape 3121 and the second flexible connecting tape 3131 of the circuit board 31 after being bent. Wherein the first connection belt hard plate 3122 is located at the outer side, that is, the second connection belt hard plate 3132 is located between the driving assembly 20 and the first connection belt hard plate 3122, the second connection belt hard plate 3132 is located at the side of the driving assembly 20 (that is, the third side 303) through at least two through holes of the second connection belt hard plate 3132 and at least two hanging portions on the driving assembly 20, and the first connection belt hard plate 3122 is located at the outer side of the second connection belt hard plate 3132 located at the side of the driving assembly 20 (that is, the third side 303) through at least two through holes of the first connection belt hard plate 3122 and at least two hanging portions on the driving assembly 20. The at least two hanging portions on the driving assembly 20 include a first hanging portion 22011 and a second hanging portion 22012 extending outwardly from the lens driving fixing portion 2201 at both sides of the lens driving electrical connection portion 2203, respectively, the first hanging portion 22011 passes through the through hole on the second connecting strap hard plate 3132 and the through hole on the first connecting strap hard plate 3122, the second hanging portion 22012 passes through the through hole on the first connecting strap hard plate 3122 and the through hole on the first connecting strap hard plate 3122, and the first connecting strap hard plate 3122 and the second connecting strap hard plate 3132 are positioned on the driving assembly 20.

The first hard connection belt plate 3122 and the second hard connection belt plate 3132 are adapted to be bonded and fixed by an adhesive medium, such as a UV adhesive, a UV thermosetting adhesive, a double-sided adhesive, and the like.

Further, the second connecting strap hard plate 3132 is electrically connected to the first connecting strap hard plate 3122, so that the second connecting strap 313 is electrically conducted to the third connecting strap soft plate 3123 through the first connecting strap hard plate 3122, and thus to the connector portion 314. Fig. 8 to 12c show a specific example of the present application, the second connection band hard sheet 3132 includes a plurality of connection band pads 31321, the connection band pads 31321 are located on a side of the second connection band hard sheet 3132 adjacent to the first connection band hard sheet 3122 after the circuit board 31 is bent, in other words, in the flat drawing of the circuit board 31 shown in fig. 10, the connection band pads 31321 are located on the same side of the second connection band hard sheet 3132 as the bottom surface of the circuit board main body 311. The first circuit board 31 includes a plurality of conductive through holes including a plurality of first conductive through holes 31221 and a plurality of second conductive through holes 31222, and after the first connection tape and the second connection tape 313 of the circuit board 31 are bent, the plurality of first conductive through holes 31221 of the first connection tape hard board 3122 are respectively opposite to the plurality of connection tape pads 31321 of the second connection tape hard board 3132, so that it is suitable for electrically connecting the plurality of first conductive through holes 31221 and the plurality of connection tape pads 31321 by providing an electrical connection medium 31322 into the plurality of first conductive through holes 31221, thereby achieving electrical conduction between the first connection tape hard board 3122 and the second connection tape hard board 3132. The electric connecting medium 31322 may be a solder such as a solder ball, and the electric connecting medium 31322 is fixed to the first conductive via 31221 and to the connecting strap pad 31321 by laser welding, that is, the first connecting strap hard plate 3122 and the second connecting strap hard plate 3132 are electrically connected by welding. The first connecting band hard plate 3122 and the second connecting band hard plate 3132 are electrically connected by the above welding method, and compared with the conventional method of connecting by a connector, a connector pressing process can be avoided, so that the driving assembly is prevented from being pressed, and the generation of bad driving assemblies is reduced.

In particular, fig. 12 a-12 b show schematic structural diagrams of the first connection belt hard plate 3122 and the second connection belt hard plate 3132 being welded through an electrical connection medium 31322.

As shown in fig. 12a, the connection band pad 31321 is located between the second connection band hard plate 3132 and the first connection band hard plate 3122, the first conductive through hole 31221 of the first connection band hard plate 3122 has a ring-shaped conductive side 312211 therein, and the conductive side 312211 of the first conductive through hole 31221 is fixed and electrically connected to the connection band pad 31321 through the electrical connection medium 31322, thereby achieving electrical conduction between the first connection band hard plate 3122 and the second connection band hard plate 3132, wherein the ring-shaped conductive side 312211 may be implemented by a metal plating layer disposed in the first conductive through hole 31221.

Fig. 12b to 12c show another structure of the first conductive via 31221, in which the first conductive via 31221 is composed of a conductive side 312211 and an insulating side 312212, in other words, a metal plating layer provided in the first conductive via 31221 is distributed only on a part of the side of the first conductive via 31221 (as shown in fig. 12c, the conductive side 312211 and the insulating side 312212 are located at both sides, respectively, viewed perpendicularly to the first wiring board 31), and further, the electrical connection medium 31322 may be biased toward the conductive side 312211 during soldering, and the electrical connection medium 31322 is in contact with, fixed, and electrically connected only to the conductive side 312211 of the first conductive via 31221, so that a connection contact condition of the electrical connection medium 31322 to the connection land pad 31321 may be observed from the insulating side 312212 to the conductive side 312211 of the first conductive via 31221, and a problem of a cold solder joint may be observed to reduce defects of the camera module. Preferably, in one first conductive through hole 31221, a ratio of an area occupied by the conductive side 312211 to an area occupied by the insulating side 312212 is 0.8 to 1.25, for example, the area occupied by the conductive side 312211 and the area occupied by the insulating side 312212 are equal, so that it is possible to secure an electrical connection between the first connecting belt hard sheet 3122 and the second connecting belt hard sheet 3132 and to facilitate observation of a problem of cold joint.

Further, in order to facilitate observation of the soldering condition between the plurality of first conductive through holes 31221 and the connection land 31321, it is preferable that in a preferred embodiment of the present application, the conductive sides 312211 of the plurality of first conductive through holes 31221 are located on the same side, and the insulating sides 312212 of the plurality of first conductive through holes 31221 are located on the other side, for example, the insulating sides 312212 of the plurality of first conductive through holes 31221 are located on the upper side (i.e., the side away from the circuit board main body 311), so as to facilitate observation of the soldering condition from the upper side of the camera module. Of course, the insulating sides 312212 of the first conductive through holes 31221 may be located on the lower side, the left side, or the right side of the camera module, or may be located between the left side and the upper side, and visual inspection of the soldering condition may be achieved.

In the soldering process, the electrical connection medium 31322, for example, tin, needs to be heated to a melting point to react with the contact tape pad 31321 and the first conductive via 31221, and if the temperature is insufficient, the conductive connection medium 31322 may not react with the contact tape pad 31321 and the first conductive via 31221, thereby forming a problem of cold solder. When the electrical connection medium 31322 is sprayed between the connection tape pad 31321 and the first conductive via 31221 by a laser welding process, an excessively long distance between the connection tape pad 31321 and the first conductive via 31221 may cause the electrical connection medium 31322 to cool, and thus, it is preferable that a gap between the connection tape pad 31321 and the first conductive via 31221 is less than 100 μm and a gap between the first connection tape hard plate 3122 and the second connection tape hard plate 3132 is less than 100 μm.

In order to reduce the aforementioned cold joint problem, it is further possible to ensure that the reaction between the electrical connection medium 31322 and the connection tape pad 31321 and the reaction between the electrical connection medium 31322 and the first conductive via 31221 can occur by secondary heating, and thus the cold joint problem can be prevented.

Alternatively, the cold joint problem can be reduced by means of pre-tinning. Pre-tinning means that solder (or other electrical connection medium) is directly disposed on the connection land 31321, the solder reacts with and bonds with the land, and then the melted solder is disposed between the connection land 31321 and the first conductive via 31221 through the first conductive via 31221, thereby achieving electrical conduction. The connection land 31321 is usually made of a material different from the electrical connection medium 31322, and during soldering, the connection land 31321 needs to react on a contact surface to ensure stable bonding, and the reaction process has a high temperature requirement, and in one embodiment of the present application, a layer of tin may be disposed on the surface of the connection land 31321 in a pre-tinning manner, so that during a subsequent soldering process, the solder is easily bonded to the tin on the surface of the connection land 31321, and the distance between the surface of the connection land 31321 and the first conductive through hole 31221 is also reduced, and the temperature of the solder can still be kept at a high temperature when the solder is disposed on the surface of the connection land 31321, so as to achieve a good soldering effect, and the requirement for a soldering process can be reduced, preferably, the thickness of the solder is between 10 μm and 50 μm, so as to maintain a good soldering effect.

Further, in an embodiment of the present application, the electrical connection between the driving component 20 and the circuit board 31 can also be achieved by the above-mentioned first conductive through hole-pad soldering. As shown in fig. 4-5 and 10-11, the second connecting strap hard plate 3132 has a recess, so that when the second connecting strap hard plate 3132 is bent and hung on the first hanging portion 22011 and the second hanging portion 22012, the second connecting strap hard plate 3132 avoids the lens driving electrical connection portion 2203 of the driving assembly 20, and the lens driving electrical connection portion 2203 is exposed, so as to be suitable for being electrically connected with the first connecting strap hard plate 3122. Specifically, the plurality of lens driving pads 22031 on the lens driving electrical connection portion 2203 correspond to the plurality of second conductive through holes 31222 on the first connection belt hard plate 3122 and are electrically connected through an electrical connection medium 31322.

The lens driving electrical connection portion 2203 has two rows of the lens driving pads 22031 arranged thereon to reduce the length of the lens driving electrical connection portion 2203, for example, the number of the lens driving pads 22031 on the upper portion is 4, and the number of the lens driving pads 22031 on the lower portion is also 4. Furthermore, in order to reduce the size of the lens driving electrical connection portion 2203 in the Z-axis direction, the upper and lower rows of the lens driving pads 22031 are distributed in a staggered manner, and in order to improve the utilization rate of the area of the lens driving electrical connection portion 2203, the lens driving pads 22031 are shaped like a gourd-shaped pad, in which one side of each lens driving pad 22031 is large and the other side of each lens driving pad 22031 is small, and the size of the side of each lens driving pad 22031, which is close to the edge of the lens driving electrical connection portion 2203, is relatively larger.

The lens driving electrical connection portion 2203 is a rigid-flex board, a flexible board portion of the lens driving electrical connection portion 2203 is electrically connected to a driving element of the lens driving portion 22 and a hard board portion of the lens driving electrical connection portion 2203, the plurality of lens driving pads 22031 are located on the hard board portion of the lens driving electrical connection portion 2203, and the hard board portion of the lens driving electrical connection portion 2203 is fixed on a side surface of the lens driving fixing portion 2201 of the lens driving portion 22, so as to maintain the stability of the lens driving electrical connection portion 2203 electrically connected with an external power supply. Further, the outer surface of the lens driving pad 22031 is lower than the outer surface of the hard plate portion of the lens driving electrical connection portion 2203, so as to provide protection for the lens driving pad 22031 and prevent the lens driving pad 22031 from being scratched, which affects the yield of electrical connection.

In one embodiment of the present application, the plurality of second conductive through holes 31222 on the first connection belt hard sheet 3122 are also composed of a conductive side 312211 and an insulating side 312212, thereby facilitating observation of the bonding condition between the second conductive through holes 31222 and the lens driving pads 22031. Preferably, the conductive sides 312211 of the second conductive through holes 31222 are located on the same side, and the insulating sides 312212 of the second conductive through holes are located on the other side, for example, the conductive sides 312211 of the second conductive through holes 31222 are located on the lower side (i.e., the side close to the circuit board main body 311), so as to facilitate viewing the soldering condition from the upper side of the camera module. Of course, the conductive sides 312211 of the second conductive through holes 31222 may be located on the upper side, the left side, or the right side of the camera module, or may be located between the right side and the lower side, and the welding condition may be observed by naked eyes.

In order to improve the bonding yield between the second conductive via 31222 and the lens driving pad 22031 and reduce the risk of cold joint, the gap between the second conductive via 31222 and the lens driving pad 22031 is preferably less than 100 μm, i.e., the gap between the first connecting belt hard board 3122 and the lens driving connection portion is less than 100 μm. Moreover, the second conductive via 31222 and the lens driving pad 22031 may be soldered by a secondary heating or pre-tinning method, and when the pre-tinning method is used, the thickness of the solder is set to be 10-50 μm, so as to maintain a good soldering effect.

That is, the structure of the conductive via-pad bonding according to the present application can be applied to the electrical connection between the driver module 20 and the circuit board 31. The driver assembly 20 includes a driver electrical connection (e.g., a lens driver electrical connection 2203) located on a side of the driver assembly 20, and a plurality of pads (e.g., lens driver pads 22031) on the driver electrical connection correspond to a plurality of conductive vias on a hard board portion of the circuit board (e.g., the first strap hard board 3122) and are electrically connected by an electrical connection medium disposed in the conductive vias.

The utility model relates to a conductive through hole-pad welded structure can be used when the electric connecting portion of the module of making a video recording is set up the side of the module of making a video recording to avoid the module of making a video recording to be stressed when the electric conductance is switched on, cause the bad of the module of making a video recording. The electrical connection portion is disposed on a side surface of the camera module, the electrical connection portion of the driving component 20 may be disposed on a side surface, and the electrical connection portion of the photosensitive component 30 may also be disposed on a side surface, and the electrical connection portion is soldered to the electrical connection portion through a circuit board 31 having a conductive through hole, so that the driving component 20 or the photosensitive component 30 is electrically conducted to the mobile electronic device.

Further, in order to maintain the bent shape of the circuit board 31, particularly the bending of the first bent portion 31211 and the fourth bent portion 31311, the reinforcing plate 37 may be bent to maintain the bending of the first flexible connecting tape 3121 at the first bent portion 31211 and to maintain the bending of the second flexible connecting tape 3131 at the fourth bent portion 31311.

Specifically, fig. 13 to 15 show schematic views of the reinforcing plate 37 attached to the bottom surface of the circuit board main body 311, the reinforcing plate 37 includes a reinforcing plate main body 371, a first reinforcing plate side portion 372 and a second reinforcing plate side portion 373, and the reinforcing plate main body 371, the first reinforcing plate side portion 372 and the second reinforcing plate side portion 373 may be integrally formed. The first stiffener lateral portion 372 further includes a first stiffener bent portion 3721, the second stiffener lateral portion 373 further includes a second stiffener bent portion 3731, the stiffener passes through the stiffener main body 371 is attached to be fixed on the bottom surface of the circuit board main body 311, so the stiffener main body 371 and the circuit board main body 311 with the circuit board through hole 3111 form a groove for accommodating the photosensitive chip 32, the first stiffener lateral portion 372 passes through the first stiffener bent portion 3721 and is fixedly connected to one side of the stiffener main body 371 (with the first connecting strip soft plate 3121 is located on the same side, i.e. the first side 301), the second stiffener lateral portion 373 passes through the second stiffener bent portion 3731 and is fixedly connected to the other side of the stiffener main body 371 with the first stiffener lateral portion 372 (with the second connecting strip soft plate 3131 is located on the same side, i.e. the second side 302). Preferably, the material of the reinforcing plate 37 is a metal material suitable for bending, such as stainless steel and copper.

The first reinforcing plate side portion 372 is bent along the first side surface 301 of the reinforcing plate main body 371 and extends upward by the bending of the first reinforcing plate bent portion 3721, and the second reinforcing plate side portion 373 is bent along the second side surface 302 of the reinforcing plate main body 371 and extends upward by the bending of the second reinforcing plate bent portion 3731. The first reinforcing plate side portion 372 and the second reinforcing plate side portion 373 are not easily changed in shape after being bent, and therefore, the first reinforcing plate side portion 372 and the second reinforcing plate side portion 373 are adapted to maintain the bending of the first bent portion 31211 and the fourth bent portion 31311, and maintain the bent shapes of the first connecting tape soft sheet 3121 and the second connecting tape soft sheet 3131, so that the resistance of the first connecting tape 312 and the second connecting tape 313 when the driving assembly 20 drives the circuit board main body 311 to move can be reduced.

The width of the first reinforcing plate bent portion 3721 is smaller than the width of the first reinforcing plate lateral portion 372, so that the difficulty in bending the first reinforcing plate bent portion 3721 is reduced, and further, the first reinforcing plate bent portion 3721 further has a through hole, which further reduces the resistance for bending the first reinforcing plate bent portion 3721. The width of the second reinforcing plate bent portion 3731 is smaller than the width of the second reinforcing plate side portion 373, so that the difficulty of bending the second reinforcing plate bent portion 3731 is reduced, and further, the second reinforcing plate bent portion 3731 further has a through hole, so that the resistance of bending the second reinforcing plate bent portion 3731 is further reduced.

As shown in fig. 16-17, in one embodiment of the present application, the chip anti-shake electrical connection portion 2114 of the chip anti-shake portion 211 is electrically connected to the circuit board main body 311 by means of pin soldering.

Specifically, in the assembly of the camera module 1, the optical lens 10 is assembled to the driving assembly 20, and the driving assembly 20 is fixed to the circuit board main body 311 and electrically connected to the circuit board main body 311, so as to reduce the height of the camera module. The driving component 20 is fixed to the circuit board main body 311 by an HA process or an AA process, where the HA process is to bond and fix the driving component 20 and the circuit board 31 directly by an adhesive medium after adjusting the parallelism, and usually requires a gap between the driving component 20 and the circuit board main body 311 to be reserved by about 0.03mm; the AA process is an active calibration process, in which an optical lens 10 is first assembled to the driving component 20 to form a semi-finished product of a camera module, and then the position relationship between the semi-finished product of the camera module and the circuit board main body 311 is adjusted according to the imaging quality of an image formed by the light rays of the semi-finished product of the camera module received by the photosensitive component 30, and further the semi-finished product of the camera module and the circuit board main body 311 are bonded and fixed by a bonding medium, which usually requires a gap of about 0.16mm to be reserved in the gap between the driving component 20 and the circuit board main body 311. Therefore, in order to reduce the height of the camera module, the gap between the driving unit 20 and the circuit board main body 311 is low when the driving unit 20 and the circuit board main body 311 are bonded and fixed, regardless of the HA process or the AA process.

In one embodiment of the present application, the chip anti-shake electrical connection portion 2114 includes a plurality of pins 21141, the pins 21141 include a transverse portion 211411 fixedly connected to the chip anti-shake fixing portion 2111 and an upright portion 211412 integrally formed with the transverse portion 211411 and perpendicular (approximately perpendicular) to the transverse portion 211411, the upright portion 211412 of the pin 21141 determines the height of the pin 21141, and a common pin size is 0.5mm, which is far beyond the gap between the driving component 20 and the circuit board main body 311. In the conventional camera module, the pins are usually soldered on the circuit board 31, and a gap of 0.2mm is reserved between the pins and the circuit board 31, which will increase the gap between the driving component 20 and the circuit board main body 311 for the present application, so that the height of the camera module is increased, which is not in accordance with the requirement of reducing the height of the camera module.

Therefore, in some embodiments of the present application, the wiring board main body 311 has a plurality of side recesses 3112, the plurality of side recesses 3112 are located at positions corresponding to the plurality of pins 21141 of the chip anti-shake connection portion on one side of the wiring board main body 311, the pins 21141 pass through the wiring board main body 311 through the side recesses 3112, and the pins 21141 and the side recesses 3112 are electrically connected by laying out an electrical connection medium. Specifically, the surface of the side recess 3112 is provided with a metal plating layer so as to be fixed by welding to the electrical connection medium and electrically conducted. With the structure, the gap between the driving component 20 and the circuit board main body 311 is not limited by the size of the pins 21141 and the welding process, so that the height of the camera module is reduced.

Fig. 17 is a schematic diagram illustrating a relative position relationship between the pin 21141 and the circuit board main body 311 according to an embodiment of the present application. The vertical portion 211412 of the pin 21141 preferably protrudes from the bottom surface of the circuit board main body 311 (i.e., the back surface of the circuit board main body 311), i.e., the bottom surface of the vertical portion 211412 of the pin 21141 is lower than the bottom surface of the circuit board main body 311, so that the electrical connection medium can have a larger contact area with the side surface of the pin 21141, thereby improving the yield of soldering and ensuring the electrical connection effect. When a reinforcing plate is further attached to the bottom surface of the circuit board main body 311, it is preferable that the reinforcing plate 37 is not attached to the bottom surface of the side recess 3112, and the bottom surface of the upright portion 211412 of the pin 21141 does not protrude from the bottom surface of the reinforcing plate 37, that is, it is preferable that the bottom surface of the upright portion 211412 of the pin 21141 is between the bottom surface of the circuit board main body 311 and the bottom surface of the reinforcing plate 37, so that the reinforcing plate 37 can protect the pin 21141 and reduce the risk of short circuit and the like due to contact between the pin 21141 and other components. It should be noted that in other embodiments of the present application, the bottom surface of the vertical portion 211412 of the pin 21141 may also protrude from the bottom surface of the reinforcing plate 37, or the bottom surface of the vertical portion 211412 of the pin 21141 may not protrude from the bottom surface of the circuit board main body 311, that is, the bottom surface of the vertical portion 211412 of the pin 21141 may also be higher than the bottom surface of the circuit board main body 311 and located between the upper surface and the bottom surface of the circuit board main body 311.

Further, the angle between the vertical portion 211412 and the lateral portion 211411 is between 80 ° and 100 °, and when the vertical portion 211412 is perpendicular to the lateral portion 211411, the angle between the vertical portion 211412 and the lateral portion 211411 is 90 °. In a preferred embodiment of the present application, the vertical portion 211412 has an inclination angle greater than 0 ° and less than 10 ° with respect to a perpendicular line of the lateral portion 211411, so that the vertical portion 211412 can have a longer length at the same height, thereby reducing the difficulty of the pin manufacturing process.

From the overall view of the camera module, the first flexible connecting band plate 3121 is located on the first side 301 of the camera module 1, the second flexible connecting band plate 3131 is located on the second side 302 of the camera module 1, the lens driving electrical connection portion 2203, the first rigid connecting band plate 3122 and the second rigid connecting band plate 3132 of the lens driving portion 22 are located on the third side 303 of the camera module 1, and the chip anti-shake electrical connection portion 2114 of the chip driving portion 21 is located on the fourth side 304 of the camera module 1.

Fig. 18 to 21 show schematic views of the outer frame 40 of the present application, the outer frame 40 including a frame main body 41, a frame cover 42, and a frame bottom plate 43.

The frame body 41 has a through hole to receive the driving assembly 20, and the driving assembly 20 is fixed to the frame body 41 by an adhesive medium to provide a supporting position for the driving assembly 20.

The frame bottom plate 43 is fixed to the bottom surface of the frame body 41 to protect the photosensitive assembly 30, and a gap exists between the frame bottom plate 43 and the bottom surface of the photosensitive assembly 30, so that when the photosensitive assembly 30 is driven by the chip anti-shake portion 211 of the driving assembly 20, the frame bottom plate 43 does not interfere with the movement of the photosensitive assembly 30. Further, the frame bottom plate 43 may further have a through hole, and the through hole of the frame bottom plate 43 corresponds to the chip anti-shake electrical connection portion 2114 of the chip anti-shake portion 211 of the driving assembly 20, so as to provide a larger space for the pin 21141, avoid contact between the pin 21141 and the frame bottom plate 43, and reduce risks such as mutual interference and short circuit.

The frame cover 42 is fixed to the top surface of the frame body 41, so as to enclose the driving assembly 20 with the frame body 41, and reduce the risk of dirt such as dust falling between the driving assembly 20 and the frame body 41. The frame cover 42 has a through hole, and the through hole of the frame cover 42 is suitable for providing the incident light of the optical lens 10, and the optical lens 10 can pass through the through hole, so that the optical lens 10 protrudes out of the frame cover 42.

Further, as shown in fig. 20 to 21, the outer frame 40 further includes a conductive cloth 44, and the conductive cloth 44 is attached to the bottom surface of the frame bottom plate 43. The conductive cloth 44 can cover the through holes of the frame bottom plate 43, so that dirt such as dust can not enter the camera module. The conductive cloth 44 may further include a conductive cloth side portion 441, the conductive cloth 44 is further attached to the side surface of the frame body 41 through the conductive cloth side portion 441, when the frame body 41 is made of metal such as aluminum, stainless steel, and the like, the conductive cloth 44 may be electrically conducted with the frame body 41, and effects of electrical conduction, electromagnetic shielding, and the like may be achieved. The conductive cloth 44 may include one or more conductive cloth side portions 441, in a specific example of the present application, the number of the conductive cloth side portions 441 is 4, and the conductive cloth side portions are respectively distributed on four sides of the frame body 41.

Further, as shown in fig. 18, the outer frame 40 further includes an insulating sheet 45, and the insulating sheet 45 is disposed between the first connection band hard plate 3122 and the frame main body 41. When the frame body 41 is made of a conductive material, there is a risk that the frame body 41 and the first hard board are in contact with each other to cause a short circuit therebetween, and therefore, the insulating sheet 45 is disposed between the first connecting band hard board 3122 and the frame body 41 to reduce the risk. Specifically, the insulating sheet 45 may be adhesively fixed to the inside of the frame body 41, may be adhesively fixed to the outside of the first connection belt hard plate 3122, or the insulating sheet 45 may be placed only between the first connection belt hard plate 3122 and the frame body 41.

In the present application, the main body portions of the first connecting tape and the second connecting tape are both disposed on the periphery side of the optical element of the imaging module, and therefore may be referred to as side connecting tapes. In the side connection tape, a portion bent upward from the side of the circuit board main body may be referred to as a bent portion (or referred to as an upward bent portion, and the bent portion may be referred to as a portion of the side connection tape). The portion arranged on the peripheral side of the camera module optical element may be referred to as a side connection band body. The surface of the side connection band body may be substantially perpendicular to the surface of the circuit board body. In some embodiments, the side connection strap and the circuit board main body may be integrally formed, for example, the side connection strap and the circuit board main body may be integrally formed by a manufacturing process of a rigid-flex board. The circuit board main body can be a hard board (such as a PCB), the bent part of the side connecting belt can be a soft board (such as an FPC), and the side connecting belt main body can comprise a part of the soft board and a part of the hard board. Wherein portions of the rigid plate may be used to suspend the side attachment straps from a static component of the optical actuator, such as an actuator mount.

In the present application, an optical element refers to an element for constituting an imaging optical system, and generally includes a plurality of lenses and a photosensitive element (typically, a photosensitive chip) for imaging. A plurality of lenses for imaging and their supporting members (e.g., lens barrels) may constitute the optical lens. The photosensitive element is positioned in the photosensitive assembly.

In the foregoing embodiment, the drive assembly 20 constitutes an optical actuator. The optical actuator may be a dual OIS optical actuator, i.e. the optical actuator has a lens driving portion and a chip driving portion. The optical actuator may include an actuator fixing portion and an actuator movable portion. The actuator fixing part may include a lens driving fixing part and a chip anti-shake fixing part, which may be fixed together. The actuator movable part may include a lens driving movable part and a chip anti-shake movable part.

In the present application, the surface of the hard sheet or the connecting tape means a surface perpendicular to the thickness direction of the hard sheet or the connecting tape (i.e., the normal direction of the surface coincides with the thickness direction of the hard sheet). Each rigid plate or connecting strip comprises two surfaces, the inner one (i.e. the side towards the optical axis) being the inner surface and the outer one (i.e. the side away from the optical axis) being the outer surface.

In the present application, the photo-sensing chip and/or the optical actuator of the camera module typically have circuitry for powering and/or implementing some corresponding function, which may be arranged on one or more circuit boards, and for the sake of convenience of description, all the various substrates in the camera module for powering and/or arranging functional circuits and their connecting members are referred to herein as circuit board structures.

In some embodiments of the present application, a camera module includes an optical actuator, an optical lens, and a photosensitive assembly; wherein the optical actuator has a chip anti-shake section. At least one side surface of the chip anti-shake part is provided with a plurality of conductive pins, at least one side surface of the circuit board main body is provided with a plurality of side concave parts, each side concave part is formed by sinking the side surface of the circuit board main body to the inner side, and the conductive pins extend into the side concave parts and are electrically connected with the side concave parts through welding media. The chip anti-shake part comprises a chip anti-shake fixing part and a chip anti-shake movable part, and in a preferred embodiment, the plurality of conductive pins are led out from at least one side surface of the chip anti-shake movable part. In the preferred embodiment, the conductive pins are led out from the chip anti-shake movable part and electrically connected with the side concave part of the circuit board main body, so that the chip anti-shake movable part can be well adapted to the chip anti-shake movement while the chip anti-shake part is electrically connected with the circuit board main body. In the chip anti-shake moving process, the chip anti-shake movable part and the circuit board main body move together, namely, the chip anti-shake movable part and the circuit board main body are relatively static. Note that, in fig. 3 of the present application, some lines of the chip anti-shake fixing portion and the chip anti-shake movable portion are omitted for simplicity of the drawing, and actually, in the preferred embodiment of the present application, the conductive pins for electrically connecting to the side recesses are led out from the side surfaces of the chip anti-shake movable portion (instead of the chip anti-shake fixing portion).

Further, in some embodiments of the present application, the frame bottom plate has a pin avoiding through hole; the pin avoiding through hole can be positioned right below the side concave part, the size of the pin avoiding through hole is larger than that of the side concave part under the elevation angle, and the contour line of the pin avoiding through hole and the contour line of the side concave part have a distance not smaller than 15 mu m; the depth of the side recess is 15-25 μm. The depth of the side concave portion is a distance recessed inward from the side surface of the wiring board main body.

Finally, it should be noted that the above embodiments are only used for illustrating the technical solutions of the present invention and are not limited. Although the present invention has been described in detail with reference to the embodiments, it should be understood by those skilled in the art that the technical solutions of the present invention may be modified or substituted with equivalents without departing from the spirit and scope of the technical solutions of the present invention, and all of them should be covered by the scope of the claims of the present invention.

Claims

1. A circuit board for a camera module is characterized by comprising a circuit board main body and at least two side connecting bands;

the circuit board main body is provided with a surface vertical to an optical axis of the camera module and a plurality of side surfaces parallel to the optical axis;

the side connecting band is led out from the side face of the circuit board main body and is bent upwards, and the side connecting band extends from the side face of the camera module after being bent to form a side connecting band main body; the side connecting strips are provided with hard plates, the outer surface of the hard plate of one of the side connecting strips is provided with a plurality of bonding pads, the hard plate of the other side connecting strip is provided with a plurality of conductive through holes, and the hard plates of the two side connecting strips are arranged in an overlapping mode; a solder medium is attached to the sidewalls of the conductive via and contacts the pad through the conductive via.

2. The wiring board for a camera module according to claim 1, wherein the plurality of side surfaces includes a first side surface, a second side surface opposite to the first side surface, a third side surface adjacent to the first side surface, and a fourth side surface opposite to the third side surface;

the side connecting band includes:

the first connecting belt comprises a first connecting belt soft board and a first connecting belt hard board, the first connecting belt soft board is led out from the first side face of the circuit board main body, bent upwards, extended along the first side face and bent to the third side face, the first connecting belt hard board is located on the third side face, the side face of the first connecting belt hard board is connected with the first connecting belt soft board, and the surface of the first connecting belt hard board is parallel to the optical axis; and

the second connecting band comprises a second connecting band soft board and a second connecting band hard board, the second connecting band soft board is led out from the second side face of the circuit board main body and is bent upwards, then extends along the second side face and is bent to the third side face, the second connecting band hard board is located on the third side face, the side face of the second connecting band hard board is connected with the second connecting band soft board, and the surface of the second connecting band hard board is parallel to the optical axis;

wherein, the first hard board of connecting band is located the outside of second hard board of connecting band, first hard board of connecting band has a plurality of electrically conductive through-holes, the surface of second hard board of connecting band has a plurality of pads, electrically conductive through-hole with the pad is connected through welding medium, welding medium sprays under the molten condition and gets into and pass electrically conductive through-hole, and after cooling adhere to the pad with electrically conductive through-hole is with electrically conductive through-hole with the pad electricity is connected.

3. The circuit board for a camera module according to claim 2, wherein the first hard connecting belt board and the second hard connecting belt board are bonded together by an adhesive medium; the inner surface of the first connecting band hard sheet and the outer surface of the second connecting band hard sheet have a gap of not more than 100 μm therebetween.

4. The wiring board for a camera module according to claim 3, wherein the soldering medium enters the conductive through hole in a form of a jet stream in a molten state and adheres to a sidewall of the conductive through hole, and the soldering medium passes through the conductive through hole and contacts the pad; and the welding medium, after curing, forms a joint across the gap between the inner surface of the first hard face strap and the outer surface of the second hard face strap;

a void remains between the welding medium and a portion of the wall of the conductive via.

5. The circuit board for the camera module according to claim 3, wherein a metal layer is attached to the wall of the conductive through hole, and the metal layer is a metal plating layer.

6. The wiring board for camera module according to claim 5, wherein the metal layer is a ring-shaped metal layer.

7. The wiring board for a camera module according to claim 5, wherein the metal layer is attached to a portion of the hole wall of the conductive via to form an unclosed metal layer.

8. The circuit board for a camera module according to claim 7, wherein the metal layers of all the conductive vias are arranged on the same side of the conductive via in the first connecting strap hard board.

9. The circuit board for a camera module according to claim 8, wherein in the first connecting belt hard board, the arc-shaped metal layers of all the conductive through holes are arranged on the lower side of the conductive through holes.

10. The wiring board for a camera module according to claim 3, wherein the soldering medium is tin or a tin-containing soldering material.

11. The circuit board for a camera module according to claim 2, wherein the circuit board further comprises a third connecting strip led out from a lower side of the first connecting strip hard board and bent outward, a surface of the third connecting strip is perpendicular to the optical axis, and a free end of the third connecting strip is provided with a connector adapted to be plugged with a main board of an electronic device carrying the camera module.

12. The utility model provides a module of making a video recording which characterized in that includes: an outer frame and an optical lens, an optical actuator, a photo-sensing chip and the wiring board of any one of claims 1 to 11 accommodated in the outer frame;

the photosensitive chip is fixed on the circuit board body of the circuit board, and the optical actuator is suitable for driving the optical lens and/or the photosensitive chip to move; the optical actuator includes an actuator fixing portion, and the side connection tape is disposed in a gap between the outer frame and the actuator fixing portion.

13. The camera module according to claim 12, wherein the photosensitive chip is attached to an upper surface of the circuit board body; the circuit board upper surface sets up annular base, annular base centers on around the sensitization chip, annular base's top surface is installed in the light filter, the light filter annular base with the circuit board main part constitutes a confined cavity in, and will the sensitization chip encapsulation in the confined cavity.

14. The camera module according to claim 12, wherein the circuit board body has a central through hole at a center thereof, a stiffener is attached to a lower surface of the circuit board body, the photo sensor chip is attached to an upper surface of the stiffener and the photo sensor chip is disposed in the central through hole; the circuit board main part upper surface sets up annular base, annular base centers on around the sensitization chip, annular base's top surface is installed in the light filter, the light filter annular base circuit board main part with the stiffening plate constitutes in a confined cavity, and will the sensitization chip encapsulation is in the confined cavity.

15. The camera module according to claim 13, wherein the optical actuator further comprises a chip anti-shake movable portion, a photosensitive package formed by the circuit board main body, the optical filter, the annular base, and the photosensitive chip is fixed to the chip anti-shake movable portion, the photosensitive package is adapted to move relative to the actuator fixing portion under the driving of the chip anti-shake movable portion, and the first connection-tape hard plate and the second connection-tape hard plate are both directly or indirectly fixed to the actuator fixing portion.

16. The camera module according to claim 13, wherein the optical actuator further includes a chip anti-shake movable portion, a photosensitive package formed by the circuit board main body, the optical filter, the annular base, the reinforcing plate, and the photosensitive chip is fixed to the chip anti-shake movable portion, the photosensitive package is adapted to move relative to the actuator fixing portion under the driving of the chip anti-shake movable portion, and the first connecting band hard plate and the second connecting band hard plate are both directly or indirectly fixed to the actuator fixing portion.

17. The camera module according to claim 15 or 16, wherein the optical actuator further comprises a lens driving movable portion, and the optical lens is mounted on the lens driving movable portion and is adapted to move relative to the actuator fixing portion under the driving of the lens driving movable portion.

18. The camera module according to claim 12, wherein the outer side surface of the actuator fixing portion has a convex pillar protruding outward, the hard plate of the lateral connecting strap has a hanging hole, and the convex pillar passes through the hanging hole to hang the lateral connecting strap on the actuator fixing portion.