WO2022105748A1

WO2022105748A1 - Sma motor, camera module and electronic device

Info

Publication number: WO2022105748A1
Application number: PCT/CN2021/130909
Authority: WO
Inventors: 李邓峰; 游钟城; 夏太红
Original assignee: 华为技术有限公司
Priority date: 2020-11-17
Filing date: 2021-11-16
Publication date: 2022-05-27
Also published as: CN114513588B; CN114513588A

Abstract

Disclosed in the embodiments of the present application are an SMA motor, a camera module, and an electronic device comprising the camera module. The camera module comprises an SMA motor and a lens. The SMA motor comprises a fixed part, a movable part, SMA wires and a plurality of suspension wires. The lens is installed on the inner side of the movable part, and the fixed part is located on the light entry side of the lens. The plurality of suspension wires are connected between the fixed part and the movable part, and are distributed on the periphery of the movable part. The plurality of suspension wires support the movable part, so that the movable part is suspended above the fixed part. A plurality of SMA wires are connected between the fixed part and the movable part. When powered on, the plurality of SMA wires contract and drive the movable part and the lens to move relative to the fixed part. The camera module provided by the present application uses the SMA motor for anti-shake, and there is no sliding friction between the movable part and the fixed part during the anti-shake process of the SMA motor, which reduces a driving algorithm of the camera module.

Description

SMA motors, camera modules and electronic equipment

This application claims the priority of the Chinese patent application with the application number 202011288300.6 and the application name "SMA motor, camera module and electronic equipment" filed with the China Patent Office on November 17, 2020, the entire contents of which are incorporated herein by reference Applying.

technical field

The present application relates to the field of camera technology, and in particular, to an SMA motor, a camera module and an electronic device.

Background technique

With the increasingly powerful camera functions of smart terminals, optical image stabilizer (OIS) has gradually become one of the main selling points of terminals. At present, the camera module in some terminals adopts a shape memory alloy (SMA) motor, and the optical anti-shake function is realized by using a current to control the expansion and contraction of the SMA wire. Since the SMA wire occupies a small volume, it can effectively reduce the volume of the camera module, so it has been widely studied.

However, during the anti-shake process of the SMA motor, there is sliding friction between the fixed part in the SMA motor and the movable part that translates relative to the fixed part. When the camera module is in different postures, the friction between the fixed part and the movable part Different, making the driving algorithm of the camera module difficult to control.

SUMMARY OF THE INVENTION

The present application provides an SMA motor, a camera module and an electronic device including the camera module. The camera module adopts SMA motor for anti-shake, and there is no sliding friction between the movable part and the fixed part in the SMA motor, which reduces the driving algorithm of the camera module.

In a first aspect, the present application provides a camera module. The camera module includes an SMA motor and a lens. The main part of the lens is located inside the SMA motor, and part of the lens structure extends to the outside of the SMA motor. The SMA motor can be used to realize the anti-shake of the camera module. The SMA motor can also be used to realize the focus adjustment of the camera module, which is not limited in this application.

The SMA motor includes a fixed part, a movable part, a plurality of SMA wires and a plurality of suspension wires. The fixing part is located on the light-emitting side of the lens. The movable part is located above the fixed part. The lens is mounted on the inner side of the movable part. The plurality of SMA wires are connected between the fixed part and the movable part. The plurality of SMA wires shrink when energized, which drives the movable part and the lens to move relative to the fixed part. The SMA wire adopts a shape memory alloy (shape memory alloy, SMA) material, such as a nickel-titanium alloy material. Shape memory alloy is a general term for a class of metals with shape memory effect. Those skilled in the art can select the material of the SMA wire according to actual needs, which is not limited in this application.

In this application, since the SMA wire shrinks when it is energized, a corresponding pulling force will be generated on the movable part, so the camera module can control the electrical signals of the multiple SMA wires, so that the resultant force exerted by the multiple SMAs on the movable part is directed in the desired direction , so as to drive the movable part including the lens to move to the expected direction and position, so that the camera module can realize anti-shake by panning the lens. Exemplarily, the SMA wire is used to drive the movable part and the relative fixed part of the lens to move along a plane perpendicular to the optical axis of the lens.

In addition, compared with the traditional anti-shake motor (that is, the voice coil motor), the SMA motor adopts a wire drive method instead of a magnetic field drive method. The structure of the SMA motor is more streamlined, which is conducive to the miniaturization of the camera module, and The magnetic interference of the camera module to the surrounding environment can be reduced.

Wherein, in the conventional technology, the SMA motor includes a fixed part, a movable part, and a support member located between the fixed part and the movable part. The support is used to support the movable part. When the movable part moves relative to the fixed part along a plane perpendicular to the optical axis of the lens, the movable part and the support are slidably connected, and there is friction between the sliding surfaces of the movable part and the support, and the friction interferes with the movement of the movable part. Because the friction force is related to the pressure on the support, when the pressure on the support is different, the friction between the support and the movable part is different, so the electronic device is in different postures, and the gravity direction of the movable part and the sliding surface form Different angles cause different pressures on the sliding surface, resulting in different sliding friction between the movable part and the support, which interferes with the accuracy of the camera module's anti-shake.

In the present application, the plurality of suspension wires are connected between the fixed portion and the movable portion, and are distributed around the periphery of the movable portion. The plurality of suspension wires support the movable portion so that the movable portion is suspended above the fixed portion. Exemplarily, one end of each suspension wire is straightly fixed to the fixed portion, and the other end is straightly fixed to the movable portion. It can be understood that the movable portion is suspended above the fixed portion by the plurality of suspension wires, and there is no need to provide an additional support member between the movable portion and the fixed portion, so that the movable portion and the fixed portion are spaced apart. Wherein, the plurality of suspension wires are symmetrically arranged on the periphery of the movable portion to ensure that the plurality of suspension wires stably support the movable portion.

In the present application, the camera module is provided with a plurality of suspension wires for supporting the movable part, so that the movable part is suspended above the fixed part, and there is no need to additionally provide a support member for supporting the movable part between the fixed part and the movable part. The fixed part and the movable part are arranged at intervals, so that when the movable part moves relative to the fixed part, there is no sliding friction force between the movable part and the fixed part, so as to prevent the electronic device from being in different postures, between the movable part and the fixed part The friction force of the camera module is different and the difficulty caused by the driving algorithm of the camera module.

In some possible implementations, the movable part includes a lens carrier and a plurality of upper springs. The lens is fixed on the inner side of the lens carrier. The plurality of upper reeds are distributed on the periphery of the lens carrier and correspond to the plurality of suspension wires one-to-one. One end of each of the upper springs is fixed on the top side of the lens carrier, and the other end is fixed on the corresponding suspension wire.

In the present application, a plurality of suspension wires supporting the movable part are fixedly connected to the upper reed, and the upper reed has elasticity, which can provide a buffer force for the movement of the movable part, and can also drive the movable part and the lens to move back to the initial position, so that the movable part can be moved The movable plate in the part does not need to be additionally provided with a spring arm connected with the fixed part, which avoids the technical difficulty of setting the spring arm, thereby reducing the cost of the camera module. It can be understood that in the present application, a plurality of suspension wires are fixedly connected to the upper reed, which solves the problems of abnormal shaking of the movable part and poor posture.

Exemplarily, the plurality of upper reeds are arranged symmetrically, and the plurality of suspension wires are arranged symmetrically. The numbers of the upper reeds and the suspension wires are both four, and the four upper reeds and the four suspension wires are in one-to-one correspondence. The four reeds and the four suspension wires are symmetrically arranged in the X-axis direction, and are symmetrically arranged in the Y-axis direction. Both the X-axis direction and the Y-axis direction are perpendicular to the Z-axis direction, and both intersect with the Z-axis direction. The Z-axis direction is the optical axis of the lens.

The length and extension direction of each suspension wire are the same, so that when each suspension wire is subjected to the same force, the angle of inclination is the same, so as to avoid different inclination angles of each suspension wire, which will lead to the tilt of the lens, thus improving the image stabilization of the camera module accuracy.

In the present application, the plurality of suspension wires supporting the movable part are arranged symmetrically, and when the camera module is in different postures, each suspension wire has the same force on the movable part, which is beneficial to reduce the control difficulty of the driving algorithm of the camera module . Wherein, a plurality of upper reeds are arranged symmetrically, and each upper reed has the same acting force on each suspension wire, so that the force on each suspension wire is balanced.

In some possible implementations, the upper leaf spring includes a first straight portion, a bent portion and a second straight portion that are connected in sequence. The first straight portion is fixed on the lens carrier, and the second straight portion is fixed on the base. The bent portion is located in the gap formed by the lens carrier and the base. Exemplarily, the first straight portion, the bent portion and the second straight portion are integrally formed, which saves the assembly time of the upper spring and avoids deformation during the assembly of the upper spring.

In this application, the upper reed is fixed to one end of the lens carrier, and the other end fixed to the base is a straight part, so that the two ends of the upper reed are on the same horizontal plane, so as to avoid deformation of the bent part of the upper reed During the process, the first straight portion is driven to bend, causing the lens to be tilted, thereby improving the focusing accuracy of the camera module.

In some possible implementations, the fixing part includes an anti-shake lead-in wire and an anti-shake lead-out wire. The anti-shake lead-in wire is electrically connected to one end of the SMA wire, and the anti-shake lead-out wire is electrically connected to the other end of the SMA wire. The connection may be a direct connection or an indirect connection, which is not limited in the present application. In the present application, the anti-shake lead-in wire and the anti-shake lead-out wire are respectively electrically connected with the SMA wire to form a closed loop. It can be understood that the anti-shake lead-in line and the anti-shake lead-out line can be regarded as the positive and negative poles of the SMA wire respectively.

In some possible implementations, the SMA motor further includes a secondary suspension. One end of the sub-suspension wire is fixed on the fixed part and is electrically connected to the anti-shake lead wire, and the other end of the sub-suspension wire is fixed to the movable part and is electrically connected to the other end of the SMA wire. one end. Exemplarily, one end of the sub-suspension is straightly fixed to the fixed part, and the other end is straightly fixed to the movable part. Among them, the auxiliary suspension wire is made of conductive material, which is equivalent to a wire.

In this application, one end of the auxiliary suspension wire is straightly fixed to the fixed part, and the other end is straightly fixed to the movable part. The reliability of the movable part being suspended above the fixed part is increased. In other embodiments, the sub-suspension wire can also be a wire that has no supporting force for the fixing part, and is only used to realize electrical connection, which is not limited in the present application.

In some possible implementation manners, the number of the anti-shake lead-in lines is multiple. The plurality of the anti-shake lead-in wires are electrically connected to the plurality of the SMA wires in a one-to-one correspondence. Multiple anti-shake lead-in wires are electrically connected to multiple SMA wires in one-to-one correspondence, and multiple SMA wires are arranged in parallel. The current through each SMA wire can be different, so that multiple SMA wires can drive the movable board to move in different directions. .

The movable part includes a movable plate facing the fixed part. A plurality of the SMA wires are fixed to the movable plate. The SMA motor also includes an anti-shake connecting wire. The anti-shake connecting line is connected between the movable plate and the auxiliary suspension line, and the movable plate is made of conductive material, so that the anti-shake connecting line and each of the SMA wires are electrically connected. It can be understood that each SMA wire is electrically connected to the conductive movable plate, so that the plurality of SMA wires are electrically connected to the auxiliary suspension wires respectively through the movable plate.

In the present application, a plurality of anti-shake lead-in wires are respectively electrically connected to a plurality of SMA wires, the plurality of SMA wires are fixed to a movable plate using conductive materials, and the movable plate is electrically connected to the auxiliary suspension wire through the anti-shake connecting wire for anti-shake The lead-out line is used to realize the closed-loop circuit of the anti-shake circuit in the SMA motor. Among them, a plurality of anti-shake lead-in wires are arranged in parallel, and finally connected in series with the anti-shake lead-out wire through the movable plate and the auxiliary suspension wire, which saves the number of anti-shake lead-out wires and is beneficial to simplify the circuit design of the SMA wire.

In some possible implementations, the camera module further includes balanced suspension wires arranged symmetrically with the auxiliary suspension wires. The balance suspension wire and the auxiliary suspension wire are respectively located at two opposite corners of the movable part. The extension direction and length of the balance suspension wire and the auxiliary suspension wire are the same. When the movable part moves under the force of the SMA wire, the balance suspension wire and the auxiliary suspension wire bear the same force.

In the present application, the number of the anti-shake lead-out line is one, and only one auxiliary suspension wire is needed to realize the electrical connection between the anti-shake lead-in line and the anti-shake lead-out line. During the anti-shake process of the SMA motor, a force is generated between the movable part and the auxiliary suspension wire. At this time, the balance suspension wire and the auxiliary suspension wire are arranged symmetrically, which is used to balance the force of the auxiliary suspension wire on the movable part, so that the movable part can be moved. The force of the part is balanced, which is beneficial to the anti-shake of the camera module.

In some possible implementations, the fixing portion includes a base plate and a fixing plate mounted on the base plate. The fixed plate faces the movable plate and is spaced from the movable plate. One end of the SMA wire is fixed to the fixing plate. The anti-shake lead-in wire is set on the fixing plate, and the anti-shake lead wire is set on the bottom plate. One end of the auxiliary suspension wire is fixed to the bottom plate, and the other end is fixed to the movable part. In the present application, the anti-shake lead-in line and the anti-shake lead-out line are respectively located on opposite sides of the fixed board, so as to avoid the difficulty of circuit design due to the large number of lines on the fixed board.

It can be understood that the movable board is made of conductive material, and the multiple SMA wires are electrically connected to the movable board, and the movable board is electrically connected to the anti-shake lead wire located on the bottom plate through the anti-shake connecting line and the auxiliary suspension line, so that multiple anti-shake lead wires are connected. The electrical signals in the SMA wire are gathered and led out through the anti-shake lead wire to realize the closed-loop circuit of anti-shake. The anti-shake lead-in wire, multiple SMA wires, movable board, anti-shake connecting wire, auxiliary suspension wire and anti-shake lead wire form a closed-loop loop.

In some possible implementations, the camera module further includes a circuit board and an image sensor mounted on the circuit board. The circuit board is located below the SMA motor. Both the anti-shake lead-in line and the anti-shake lead-out line are led out from the fixing portion and are electrically connected to the circuit board.

In this application, the anti-shake lead-in line and the anti-shake lead-out line are led out from the bottom plate, and are electrically connected to the circuit board to control the electrical signal of the input SMA wire, so as to control the movement of the movable plate to compensate for the offset of the optical path, and realize the camera mode Line control of group stabilization. At the same time, the anti-shake lead-in line and the anti-shake lead-out line are led out from the bottom plate and are electrically connected to the circuit board, so that the camera module can realize the electrical connection between the internal circuit of the camera module and the external circuit only through a single circuit board .

In some possible implementations, the camera module further includes a circuit board, an image sensor, a base, and a filter. The circuit board, the image sensor, the base and the filter are all located under the SMA motor. The image sensor is mounted on the circuit board, and the base is fixed above the circuit board. The filter is fixed on the base and is arranged opposite to the image sensor.

In this embodiment, the circuit board and the image sensor are located below the SMA motor, and the SMA motor drives the lens to move relative to the image sensor along a plane perpendicular to the optical axis of the lens. In other embodiments, the SMA motor can also drive the lens together with the image sensor to move in a plane perpendicular to the optical axis of the lens; alternatively, the SMA motor drives the image sensor to move relative to the lens in a plane perpendicular to the optical axis of the lens.

Among them, the light passing through the lens from the outside world is irradiated on the image sensor after passing through the filter. The filter is located between the image sensor and the lens, which can filter the stray light in the light passing through the lens, so that the photos taken by the camera module are more realistic, thereby improving the quality of the camera module.

In some possible implementations, the movable part further includes a base, a first driving member, a second driving member and a lower spring. The lens is located inside the base, and the first driving member is fixed on the base. The second driving member is located between the first driving member and the lens, and is fixed relative to the lens. The first driving member and the second driving member are disposed opposite to each other, and when the first driving member or the second driving member responds to an electrical signal, there is a gap between the first driving member and the second driving member A magnetic field effect is formed to drive the lens to move along the direction of the optical axis of the lens. The lower spring is connected between the base and the lens, and is located below the second driving member. The lens carrier is suspended relative to the base, and the lower spring supports the lens carrier, the second driving member and the lens fixed on the lens carrier.

In the present application, when the first driving member or the second driving member responds to the electrical signal, a magnetic field effect is formed between the second driving member and the first driving member, and the lens is driven to move along the direction perpendicular to the optical axis of the lens, so as to change the lens The distance from the image sensor to realize the focusing of the camera module.

In some possible implementations, the first driving member includes a magnetic body, and the second driving member includes a coil. In the present application, based on the smaller weight of the coil (also smaller than the magnetic body), the weight of the first driving member, the lens carrier and the lens as a whole is smaller, so that the load of the lower spring is smaller, which is beneficial to reduce the load of the camera module. Focusing power consumption. In other embodiments, the first driving member may also include a coil, and the second driving member may include a magnetic body, which is not limited in this application.

Exemplarily, the number of magnetic bodies and coils is two. The two magnetic bodies are respectively fixed on the opposite sides of the base, and the two coils are respectively fixed on the opposite sides of the lens carrier. The two magnetic bodies are in one-to-one correspondence with the two coils. When the coil is energized, an electromagnetic force is generated between the coil and the corresponding magnetic body, and the driving coil drives the lens to move along the optical axis of the lens.

In some possible implementations, the movable part further includes a connecting piece and a plurality of focusing leads. The connecting piece is used to realize the transmission of the electrical signal of the first driving member or the second driving member. The connecting piece may be a circuit board or a structural member provided with wires, which is not limited in the present application. When the first driving member or the second driving member responds to the electrical signal, a magnetic field effect is formed between the second driving member and the first driving member, and the lens is driven to move relative to the base plate.

The connecting piece is fixed on the side of the base, and the first driving member or the second driving piece is electrically connected with the connecting piece. The plurality of focusing wires are arranged on the fixing portion and are connected to the plurality of suspension wires in a one-to-one correspondence. The plurality of suspension wires and the plurality of upper reeds are all made of conductive material, and the plurality of focusing leads are electrically connected to the connecting sheet through the plurality of suspension wires, respectively.

In this application, the connecting piece in the SMA motor is electrically connected to the circuit board through a plurality of upper reeds, a plurality of suspension wires and a plurality of focusing leads, so as to realize a closed loop of the focusing circuit and improve the adjustment of the camera module. focus speed. It can be understood that in this application, the SMA motor is a closed-loop motor, and is electrically connected to the connecting piece through a plurality of focusing leads, a plurality of suspension wires, and a plurality of upper reeds, so as to realize the control and response of the signal. , feedback and control, generate a feedback signal, reduce the number of times the lens moves back and forth, thereby improving the focusing speed of the camera module and reducing the power consumption of the camera module.

In some possible implementations, the movable part also includes a position detector. The position detector is located on the inside of the connecting piece. The position detector is used to detect the position of the lens relative to the fixed part. Exemplarily, the position detector performs position detection by detecting changes in the magnetic field.

Exemplarily, both the position detector and the second driving member (coil) are electrically connected to external devices through connecting sheets, so as to simplify the circuit design of the focusing assembly. Exemplarily, the position detector is embedded in the base, and the space of the position detector and the base is multiplexed to make the camera module more miniaturized. In some other embodiments, the position detector can also be set in other positions, which is not limited in this application.

In this embodiment, the position detector and the driver IC (driver IC) are integrated chips, and the number of pins of the second driver (coil) and the position detector is reduced by sharing the power supply and communication. That is, the position detector adopts the detection, driving, and control integrated chip (all in one). Wherein, those skilled in the art can design the position detector according to actual requirements, and the present application does not limit the specific driving method of the position detector and the method of electrical connection with the second driving member (coil), etc.

In some possible implementations, the plurality of suspension wires include a first suspension wire, a second suspension wire, a third suspension wire, and a fourth suspension wire. The first suspension wires and the second suspension wires are symmetrically arranged in the X-axis direction, the third suspension wires and the fourth suspension wires are symmetrically arranged in the X-axis direction, and the first suspension wires are arranged symmetrically in the X-axis direction. The fourth suspension wires are arranged symmetrically in the Y-axis direction, and the second suspension wires and the third suspension wires are symmetrically arranged in the Y-axis direction. Wherein, the X-axis direction is perpendicular to and intersects with the Y-axis direction.

In the present application, the four suspension wires are respectively located at four diagonal positions of the base. During the movement of the movable part relative to the fixed part, there is more avoidance space when the suspension wires are inclined, which is beneficial to the miniaturization of the camera module.

In some possible implementations, the first suspension wire and the second suspension wire are located on the same side of the connecting piece. The third suspension wire and the fourth suspension wire are located on the other side of the connecting piece, and are away from the connecting piece relative to the first suspension wire and the second suspension wire. The camera module further includes two closed-loop leads embedded in the base. One closed-loop lead is connected between the third suspension wire and the connection piece, and the other closed-loop lead is connected between the fourth suspension wire and the connection piece. Wherein, each suspension wire is made of conductive material, so that each suspension wire is electrically connected with the corresponding focusing lead. The plurality of upper reeds are made of conductive material and are electrically connected with the connecting pieces.

In some possible implementations, the bottom plate is provided with a first escape opening and a second escape opening which are arranged opposite to each other. The anti-shake lead-in line and the anti-shake lead-out line are led out from the first avoidance opening, and a plurality of focusing leads are led out from the second avoidance opening. Wherein, a plurality of focusing leads are arranged on the bottom plate and contact the plurality of suspension wires in a one-to-one correspondence.

In some possible implementations, a plurality of focusing leads and anti-shake lead-out lines located on the base plate are embedded in the base plate through etching and semiconductor deposition processes. The multiple focusing leads and the anti-shake lead wires can also be formed as a flexible circuit board and fixed to the base plate by means of bonding.

In the present application, one end of the suspension wire is fixed to the bottom plate, and a plurality of focusing leads are arranged on the bottom plate. The suspension wire can directly contact the focusing lead located on the bottom plate to realize electrical connection, which simplifies the difficulty of electrical connection between the suspension wire and the focusing lead. . In addition, a plurality of focusing leads are integrated on the bottom plate, which avoids the disorder of the leads and affects the arrangement of various components of the camera module.

In some possible implementations, the movable part includes a movable board, a circuit board and an image sensor. The movable plate, the circuit board and the image sensor are all located on the light-emitting side of the lens. The movable plate faces the fixing portion and is spaced apart from the fixing portion. The circuit board is fixed above the movable plate, and the image sensor is mounted on the circuit board. The SMA wire is fixedly connected to the movable board.

In the present application, the circuit board, the image sensor and the base are all fixedly connected relative to the movable plate, and the lens is connected to the base, and the SMA wire drives the image sensor and the lens together when responding to the electrical signal, and the relative fixed part is along a line perpendicular to the optical axis of the lens. When the plane moves, the position of the light passing through the lens projected on the image sensor remains unchanged, which is beneficial to improve the imaging resolution of the camera module, thereby improving the imaging clarity of the camera module. At the same time, the position of the light-casting image sensor passing through the lens is fixed, so that the image sensor can be set with a smaller photosensitive surface to meet the imaging requirements, which is beneficial to reduce the volume of the image sensor.

In some possible implementations, the fixing portion includes a base plate and a fixing plate fixed on the base plate. The fixed plate is spaced from the movable plate, and one end of the SMA wire is fixedly connected to the fixed plate.

The camera module further includes a casing, a flexible-rigid combination board and a flexible circuit board. The casing is fixed on the periphery of the bottom plate, and the movable part is accommodated inside the casing. The rigid-flex board is drawn out from the bottom plate to the outer side of the casing, and is electrically connected with the SMA wire. The flexible circuit board is electrically connected to the rigid-flex board and the circuit board, and the flexible circuit board is provided with a bending allowance.

In this application, part of the wiring inside the SMA motor is led out through the flexible circuit board, and the other part is led out through the flexible-rigid board. For example, the traces for focusing in the SMA motor are led out through the flexible circuit board, and the traces in the SMA motor for anti-shake are led out through the flexible-rigid board.

In other embodiments, the wiring inside the camera module can also be led out only by a flex-rigid board or a flexible circuit board, which is not limited in the present application. For example, the anti-shake signal and focusing signal of the camera module are integrated in the flexible-rigid combination board; or, the movable part does not include focusing components, and the camera module can only achieve anti-shake, and the anti-shake signal is transmitted through the flexible-rigid combination board at this time. to the outside of the camera module.

In some possible implementations, the flexible circuit board is drawn out from the circuit board to the outside of the housing. The flexible circuit board includes a first bending area, a first flattening area and a second bending area which are connected in sequence. One end of the first bending area is fixedly connected to the circuit board, and the other end is fixedly connected to the first side of the first flat area. One end of the second bending area is fixedly connected to the second side edge of the first flattening area, and the other end is fixedly connected to the rigid-flex board. Wherein, the first side and the second side are arranged adjacent to each other, the extension direction of the first bending area includes at least two directions, and the extension direction of the second bending area includes at least two directions .

Wherein, the extending direction of the first bending region includes at least two directions. The extending direction of the first bending area is the direction of wiring arrangement in the first bending area. The extension distance of the first bending area is greater than the distance between the two ends of the first bending area that are arranged in opposite extension directions. The extending direction of the second bending region includes at least two directions. The extending direction of the second bending area is the direction of wiring arrangement in the second bending area. The extension distance of the second bending region is greater than the distance between the two ends of the second bending region which are arranged in opposite extension directions. Exemplarily, the extension direction of the first flattening area is unchanged. When the camera module is in a non-working state, both the first bending area and the second bending area are in a bent state, and the first flattening area is in a flat state.

In the present application, the flexible circuit board has a deformation margin by setting the first bending area and the second bending area. In other embodiments, the flexible circuit board can also form a deformation allowance by providing only one bending area. Alternatively, the extension direction of the first flattening area can also include at least two directions, and the first bending area, the first flattening area and the second bending area are all provided with deformation allowances. Those skilled in the art can design a deformation allowance for the flexible circuit board according to the actual requirements of the camera module, which is not limited in this application.

In some possible implementations, the rigid-flex panel includes a third bending area and a second flattening area. One end of the third bending area is connected to the bottom plate, and the extending direction of the third bending area includes at least two directions. The extending distance of the third bending region is greater than the distance between the two ends of the third bending region which are arranged in opposite extending directions. When the camera module is in a non-working state, the third bending area is in a bent state. The second flattening area is connected to an end of the third bending area away from the bottom plate, and the flexible circuit board is fixed to the second flattening area.

In this application, the flex-rigid board is also provided with a third bending area, so that the length of the flex-rigid board can be changed, so as to prevent the flex-rigid board from being involved in the movable part during the anti-shake process of the camera module, which may interfere with the movement. The movement of the part is beneficial to the anti-shake of the camera module. Wherein, the third bending area is located in the flexible board portion of the flexible-rigid combination board. The second flattening area may be located in the soft board part of the flex-rigid board, or may be located in the hard board part of the flex-rigid board, which is not limited in the present application.

In some possible implementations, one end of the flexible circuit board is fixed under the circuit board, the other end is fixed on the bottom plate, and the flexible circuit board is located inside the casing. The flexible circuit board is provided with a deformation allowance. Wherein, the flexible circuit board is provided with a deformation allowance, so that the length of the flexible circuit board can be changed.

In this application, the flexible circuit board is located inside the casing, and the electrical signals inside the camera module are electrically connected to other components of the electronic device through the rigid circuit board, so as to avoid the outer side of the casing being configured to transmit electrical signals in the movable part The flexible circuit board of the invention eliminates the need to set a deformation space inside the electronic device for the flexible circuit board to move with the movable part, reduces the internal space of the electronic device occupied by the camera module, and is beneficial to the miniaturization of the electronic device.

Among them, when the SMA wire is energized and contracted to drive the circuit board in the movable part to move, the force of the circuit board on the flexible circuit board pulls the flexible circuit board to move, and the deformation margin in the flexible circuit board can absorb the force generated by this force. The amount of displacement prevents the flexible circuit board fixed at one end of the flexible and rigid board from being involved in the circuit board and interferes with the movement of the movable part, thereby facilitating the anti-shake of the camera module.

The circuit board can be a rigid circuit board, and is provided with wires electrically connected to the flexible circuit board, and the rigid circuit board can be fixedly connected to the movable board by various methods. At the same time, various components are mounted on the circuit board, such as an image sensor, which is electrically connected to the flexible circuit board through a process, so that the signals obtained by the image sensor are transmitted to other components. In some other embodiments, the circuit board can also place flex boards and components on the substrate, the flex boards can be connected to the image sensor with electrical signals through processes, such as wire bonding, and the signals can be drawn out through the flexible circuit board. Wire.

Those skilled in the art can design circuit boards, flex-rigid boards, and flexible circuit boards according to actual needs. The present application does not limit the specific structures and forming processes of circuit boards, flex-rigid boards, and flexible circuit boards. Wherein, the flexible circuit board and the circuit board may have an integrated structure, or they may be two different structures with the flexible circuit board, which are not limited in the present application.

In some possible implementations, the SMA motor is provided with an escape space passing through the fixed plate and the movable plate, and the flexible circuit board is accommodated in the escape space.

In the present application, the SMA motor is provided with an avoidance space passing through the fixed plate and the movable plate. The avoidance space is not only for the flexible circuit board to pass through the fixed plate and the movable plate to realize the electrical connection between the circuit board and the flexible and rigid board, and can A deformation space is provided for the flexible circuit board to deform under the action of the movable part, so that the space of the flexible circuit board is multiplexed with the space inside the SMA motor, which is beneficial to the miniaturization of the camera module.

In some possible implementations, the movable part further includes a base and an upper spring. The base is located above the circuit board. The lens is located inside the base and is connected to the base. The upper reed is fixed above the base, one end of the plurality of suspension wires is fixed to the upper reed, and the other end is fixed to the fixing portion.

In this application, one end of each suspension wire is fixedly connected to an upper reed, and when the SMA motor responds to the electrical signal and drives the movable part to move along a plane perpendicular to the optical axis of the lens, the upper reed can provide a buffer for the movement of the movable part force, making the movement of the movable part more stable. At the same time, after the SMA wire is powered off, there is no driving force for the movable part, and the upper reed has elasticity to drive the movable part and the lens to move back to the initial position, so that the movable part and the lens are reset. That is, a plurality of suspension wires are fixedly connected to the upper reed, which solves the problems of abnormal shaking of the movable part and poor posture.

In a second aspect, the present application further provides a camera module. The camera module includes an SMA motor and a lens. The SMA motor includes a fixed part, a movable part, a plurality of SMA wires, a bracket and a plurality of suspension wires. The movable part is located on the light-emitting side of the lens and above the fixed part. The bracket is suspended above the movable part and is fixedly connected to the fixed part. The movable part includes a movable plate and an image sensor. The movable plate faces the fixing portion and is spaced apart from the fixing portion, and the image sensor is located above the movable plate. The movable part further includes a first circuit board, and the first circuit board is fixed above the movable board. The image sensor is mounted on the first circuit board.

The SMA wire is connected between the fixed part and the movable plate. The plurality of SMA wires shrink when energized, and drive the movable plate and the image sensor to move relative to the fixed portion.

In this application, the bracket is suspended above the movable part, and when the SMA wire responds to the electrical signal, it only drives the movable part (the movable board, the first circuit board and the image sensor) to move along a plane perpendicular to the optical axis of the lens to realize the prevention There is no need to drive the lens, lens carrier and bracket to move, and the load on the movable part is small, which is beneficial to the anti-shake power consumption of the camera module. At the same time, due to the light-gathering effect of the lens, compared with the traditional solution of moving the lens for anti-shake, the SMA motor-driven image sensor in this embodiment requires a shorter compensation translation distance (ie, travel) to perform optical path compensation. The power consumption of the camera module is further reduced.

In some possible implementations, the plurality of suspension wires are connected between the bracket and the movable portion, and are distributed around the periphery of the bracket. The plurality of suspension wires suspend the movable portion so that the movable portion is suspended above the fixed portion. Exemplarily, a plurality of suspension wires are symmetrically located on the periphery of the bracket, and one end of each suspension wire is straightly fixed to the bracket, and the other end is straightly fixed to the movable portion.

In the present application, after the SMA wire is powered off, there is no force on the movable portion, and the multiple suspension wires support the movable portion. After the SMA wire is powered off, the movable portion can still be spaced from the fixed portion, so that the initial position of the movable portion relative to the fixed portion is the same. .

Among them, in this application, the movable part only includes a movable board, a circuit board and an image sensor, and the weight of the movable part is relatively small. When the SMA wire is powered off, the movable part can be restored to the initial position by the force of the suspension wire itself, without the need for Additional set of reeds for reset. In other embodiments, one end of the suspension wire close to the bracket can be connected with the reed, and the movable part is reset by the reed. The present application does not limit the way in which the movable part is reset.

In some possible implementations, the bracket includes a bracket body and a top plate. The bracket body faces the first circuit board and is spaced from the first circuit board. The top plate is fixed above the bracket body. The plurality of suspension wires are located at the periphery of the bracket body, and one end of each of the suspension wires is fixed to the top plate, and the other end is fixed to the first circuit board.

Exemplarily, the top plate of the bracket is fixed to the inner wall of the casing, and the casing is fixed to the periphery of the bottom plate, so that the bracket is fixed relative to the fixing portion. The bracket body is fixed below the top plate, and the bracket body and the movable part are arranged at intervals, so that the bracket is suspended above the movable part.

In some possible implementations, the camera module further includes a housing and a second circuit board. The housing is fixed on the fixing part, and the movable part, the SMA wire and the bracket are all accommodated inside the housing. The bracket is fixed on the inner wall of the casing. One end of the second circuit board is fixedly connected to the fixing part, and the other end is led out from the fixing part to the outer side of the casing, and the image sensor and the SMA wire are respectively electrically connected to the second circuit board connect.

In the present application, a part of the structure of the second circuit board is located on the outer side of the casing, and is used to connect with other components inside the electronic device, so as to transmit electrical signals inside the camera module.

In some possible implementations, the second circuit board includes a first portion and a second portion connected to the first portion. The first part is fixed to the fixing part and is spaced apart from the first circuit board. The second part is located on a side of the first part away from the first circuit board, and the second part is located on the outer side of the housing. Exemplarily, the first part surrounds the first circuit board, that is, the first circuit board is located inside the first part. The second portion is located on a side of the first portion away from the first circuit board and extends to the outside of the bottom plate.

In the present application, the second circuit board includes a first part and a second part led out from the first part to the outside of the housing, the first part can be used to electrically connect the circuits in the focusing assembly, and the second part is used to connect the camera module to the outside of the housing. Other components in electronic equipment are electrically connected.

In some possible implementations, the camera module further includes a flexible connector electrically connected between the first circuit board and the first part. Wherein, the flexible connector can be bent.

In this application, the first circuit board is connected to the second circuit board through a flexible connector, so as to realize the electrical connection between the first circuit board and the components outside the electronic device. During the anti-shake process of the camera module, the SMA wire drives the first circuit board to move with the corresponding electrical signal, the flexible connector can be bent, and the flexible connector can absorb the movement of the first circuit board, preventing the second circuit board from being involved in the first circuit. board and affect the anti-shake of the camera module.

In some embodiments, one end of the second part is fixed to the bottom plate, and the other end is used for fixedly connecting to other components in the electronic device. Exemplarily, the second part is a rigid circuit board. The leading ends of the plurality of SMA wires are fixed on the second circuit board. In the present application, the second circuit board is fixedly connected to the bottom plate, so that the lead ends of the multiple SMA wires can be stably fixed to the second circuit board, so as to prevent the second circuit board from moving under the driving of the first circuit board, which may affect many The stability of the lead end of the root SMA wire and the second circuit board.

In the present application, the flexible connector has a different structure from the first circuit board and the second circuit board. In other embodiments, the flexible connector can also be integrated with the first circuit board, which is not limited in the present application. For example, the first circuit board includes a substrate and a flexible circuit board located on the substrate, and the flexible circuit board and the flexible connecting member are integrally formed.

In some possible implementations, the first part is a hollow structure, and the first circuit board is located inside the first part. The number of the flexible connecting pieces is multiple. A plurality of the flexible connecting pieces are arranged symmetrically, and one end of each of the flexible connecting pieces is fixed to the first circuit board, and the other end is fixed to the first part. A plurality of flexible connectors are distributed around the first circuit board, and the gap between the first circuit board and the first part is fully utilized, which is beneficial to the miniaturization of the camera module.

In this application, the traces in the first circuit board are drawn out through a plurality of flexible connectors, and each flexible connector shares a part of the traces in the first circuit board, so that the width of each flexible connector is thinner and reduces the The width of the gap between the first circuit board and the first part is reduced, thereby facilitating the miniaturization of the camera module. Moreover, on the basis of a certain length of the flexible connector, the width of the flexible connector is relatively thin, which is beneficial to improve the bending performance of the flexible connector, thereby preventing the flexible connector from interfering with the movement of the first circuit board. It can be understood that when a single flexible connector shares the traces drawn from the first circuit board, the flexible connector needs a wider width to lead out all the traces in the first circuit board. At this time, the first circuit board and the first part A wider gap is required.

In some possible implementations, the first circuit board includes a hard board part and a soft board part connected to the hard board part. The hard board portion is fixed to the movable board. The soft board part is drawn out from the hard board part to the outer side of the casing, and is electrically connected with the second circuit board. The flexible board portion is provided with a bending allowance, and when the first circuit board moves under the action of the SMA wire in the SMA assembly, the flexible board portion is bent and deformed to prevent the second circuit board from moving.

In the present application, the SMA wire in the SMA assembly shrinks when it is energized, and drives the movable plate, the hard plate part and the image sensor to translate together relative to the fixed part to realize the anti-shake of the camera module. At the same time, the flexible board part is provided with a bending allowance. When the SMA wire exerts a force on the movable part, the bending allowance can absorb the displacement caused by the force of the SMA wire, so as to avoid the bending allowance fixed on one end of the second circuit board. The soft board part involves the movement of the hard board part, which is beneficial to the anti-shake of the camera module.

In the present application, the first circuit board includes a hard board part for installing the image sensor, and a soft board part located outside the casing. The soft board part can be bent and deformed to avoid the movement of the first circuit board under the action of the SMA wire. The second circuit board is driven, thereby ensuring the stability of the connection between the second circuit board and other components in the electronic device. Wherein, the hard board part and the soft board part can be integrally formed, and can also be connected in different structures through a process, which is not limited in the present application. Those skilled in the art can design the hard board portion and the soft board portion according to actual needs.

In some possible implementations, the fixing part includes a base plate and a fixing plate on the base plate. One end of the SMA wire is fixed on the fixed plate, and the other end is fixed on the movable plate. The bottom plate is provided with wiring. The wiring is electrically connected to the SMA wire. The second circuit board is drawn out from the bottom plate, and the second circuit board is connected to the wiring.

Exemplarily, the traces located on the base plate are embedded in the base plate through etching and semiconductor deposition processes. The wiring can also be formed as a flexible circuit board and fixed to the bottom plate by means of bonding, and the present application does not limit the way in which the wiring is arranged on the bottom plate. Wherein, the second circuit board is connected with the wiring, and the second circuit board is drawn out from the bottom plate and extends to the outside of the casing. The second circuit board is used for electrical connection with other components inside the electronic device.

In the present application, a wire electrically connected to the SMA wire is formed on the base plate through a process, and the wire is integrated on the base plate, thereby reducing the design of the circuit board in the camera module.

In some possible implementations, the SMA motor further includes a focusing assembly. The focusing assembly is mounted on the bracket, and the lens is located inside the focusing assembly. When the focusing assembly responds to the electrical signal, the lens is driven to move along the direction of the optical axis of the lens.

In this application, the SMA component in the SMA motor is used to realize the anti-shake of the camera module, and the focusing component is used to realize the focusing of the camera module, that is, the focusing function and the anti-shake function in the camera module are composed of different Structural drive is conducive to realizing large-angle anti-shake of the camera module. Exemplarily, the electrical signals of the focusing assembly and the SMA assembly are finally transmitted to other components of the electronic device through the second circuit board.

In a third aspect, the present application further provides an electronic device. The electronic device includes a casing, a graphics processor, and the camera module in the first aspect or the second aspect above. The graphics processor and the camera module are accommodated in the casing. The camera module is electrically connected to the graphics processor.

In the present application, the electronic device includes the above-mentioned camera module using an SMA motor. A plurality of suspension wires in the SMA motor are used to suspend the movable part above the fixed part, and the movable part is relative to the fixed part along the optical axis perpendicular to the lens. There is no friction between the movable part and the fixed part when the plane moves in the same direction, which avoids the difficulty caused by the driving algorithm of the camera module when the electronic device is in different postures.

In a fourth aspect, the present application further provides an SMA motor. The SMA motor includes a fixed part, a movable part, a plurality of SMA wires and a plurality of suspension wires, the plurality of suspension wires are connected between the fixed part and the movable part, and are distributed on the periphery of the movable part, so The plurality of suspension wires support the movable portion, so that the movable portion is suspended above the fixed portion; the plurality of SMA wires are connected between the fixed portion and the movable portion, and the plurality of SMA wires are connected between the fixed portion and the movable portion. When the wire is energized, it shrinks, which drives the movable part to move relative to the fixed part.

In the present application, the camera module is provided with a plurality of suspension wires for supporting the movable part, so that the movable part is suspended above the fixed part, and there is no need to additionally provide a support member for supporting the movable part between the fixed part and the movable part. The fixed part and the movable part are arranged at intervals, so that when the movable part moves relative to the fixed part, there is no sliding friction between the movable part and the fixed part, so as to avoid the friction between the movable part and the fixed part when the SMA motor is in different postures. The difficulty of the driving algorithm of the camera module caused by different friction forces.

In some possible implementations, the movable part includes a lens carrier and a plurality of upper springs. The lens carrier is used for fixing the lens. The plurality of upper reeds are distributed on the periphery of the lens carrier and correspond to the plurality of suspension wires one-to-one. One end of each of the upper springs is fixed on the top side of the lens carrier, and the other end is fixed on the corresponding suspension wire.

In the present application, a plurality of suspension wires supporting the movable part are fixedly connected to the upper reed, and the upper reed has elasticity, which can provide a buffer force for the movement of the movable part, and can also drive the movable part and the lens to move back to the initial position, so that the movable part can be moved The movable plate in the part does not need to be additionally provided with a spring arm connected with the fixed part, which avoids the technical difficulty of setting the spring arm, thereby reducing the cost of the camera module.

In some possible implementations, the fixing part includes an anti-shake lead-in wire and an anti-shake lead-out wire. The anti-shake lead-in wire is electrically connected to one end of the SMA wire. In the present application, the anti-shake lead-in wire and the anti-shake lead-out wire are respectively electrically connected to the SMA wire to form a closed loop. It can be understood that the anti-shake lead-in line and the anti-shake lead-out line can be regarded as the positive and negative poles of the SMA wire respectively.

In some possible implementations, the SMA motor further includes an auxiliary suspension wire, and one end of the auxiliary suspension wire is fixed to the fixing portion and is electrically connected to the anti-shake lead wire. The other end of the auxiliary suspension wire is fixed to the movable part and is electrically connected to the other end of the SMA wire. Exemplarily, one end of the sub-suspension is straightly fixed to the fixed part, and the other end is straightly fixed to the movable part. Among them, the auxiliary suspension wire is made of conductive material, which is equivalent to a wire.

In this application, one end of the auxiliary suspension wire is straightly fixed to the fixed part, and the other end is straightly fixed to the movable part. The reliability of the movable part being suspended above the fixed part is increased. In other embodiments, the sub-suspension wire can also be a wire that has no supporting force on the fixing portion, and is only used to realize electrical connection, which is not limited in the present application.

In some possible implementation manners, the number of the anti-shake lead-in lines is multiple. The plurality of the anti-shake lead-in wires are electrically connected to the plurality of the SMA wires in a one-to-one correspondence. The movable part includes a movable plate facing the fixed part, and a plurality of the SMA wires are fixed to the movable plate. The SMA motor further includes an anti-shake connecting wire. The anti-shake connecting line is connected between the movable plate and the auxiliary suspension line, and the movable plate is made of conductive material, so that the anti-shake connecting line and each of the SMA wires are electrically connected.

In the present application, a plurality of anti-shake lead-in wires are respectively electrically connected to a plurality of SMA wires, the plurality of SMA wires are fixed to a movable plate using conductive materials, and the movable plate is electrically connected to the auxiliary suspension wire through the anti-shake connecting wire for anti-shake The lead-out line is used to realize the closed-loop circuit of the anti-shake circuit in the SMA motor. Among them, a plurality of anti-shake lead-in wires are arranged in parallel, and finally connected in series with the anti-shake lead-out wire through the movable plate and the auxiliary suspension wire, which saves the number of anti-shake lead-in wires and is beneficial to simplify the circuit design of the SMA wire.

Description of drawings

In order to describe the technical solutions in the embodiments of the present application or the background technology, the accompanying drawings required in the embodiments or the background technology of the present application will be described below.

1 is a schematic structural diagram of an electronic device provided by an embodiment of the present application;

2 is a schematic structural diagram of a camera module provided by an embodiment of the present application in some embodiments;

Fig. 3 is the partial structure schematic diagram of the camera module shown in Fig. 2;

Fig. 4 is the partial exploded structure schematic diagram of the camera module shown in Fig. 2;

FIG. 5 is a schematic diagram of a partially exploded structure of the SMA motor shown in FIG. 4;

Fig. 6 is the top view of the partial structure of the SMA motor shown in Fig. 4;

7 is a schematic cross-sectional view of the camera module shown in FIG. 2 along the line A-A;

Fig. 8 is a partial exploded schematic view of the focusing assembly shown in Fig. 5;

Fig. 9 is a partial structural representation of the camera module shown in Fig. 3;

Fig. 10 is a partial structural schematic diagram of the structure shown in Fig. 7;

Fig. 11 is a partial structural schematic diagram of the SMA motor shown in Fig. 3;

Fig. 12 is a partial structural schematic diagram of the structure shown in Fig. 11;

Fig. 13 is a circuit schematic diagram of the structure shown in Fig. 11;

FIG. 14 is a schematic structural diagram of another part of the SMA motor shown in FIG. 3;

Fig. 15 is another partial structural schematic diagram of the camera module shown in Fig. 3;

Fig. 16 is a partial structural schematic diagram of the camera module shown in Fig. 15;

17 is a schematic structural diagram of a camera module provided in an embodiment of the present application in Embodiment 2;

Fig. 18 is a partial structural schematic diagram of the camera module shown in Fig. 17;

Fig. 19 is the exploded structure schematic diagram of the camera module shown in Fig. 17;

Figure 20 is a schematic cross-sectional view of the structure shown in Figure 17 along the line B-B;

Fig. 21 is a partial structural schematic diagram of the cross-sectional view shown in Fig. 20;

Fig. 22 is a top view of the partial structure of the camera module shown in Fig. 21;

23 is a partial structural schematic diagram of the camera module provided in the embodiment of the present application in Embodiment 3;

Figure 24 is a schematic cross-sectional view of the structure shown in Figure 23;

Figure 25 is an enlarged schematic view of the part a shown in Figure 24;

Fig. 26 is a partial structural schematic diagram of the camera module shown in Fig. 23;

27 is a schematic structural diagram of a camera module provided in an embodiment of the present application in Embodiment 4;

Fig. 28 is a partial structural schematic diagram of the camera module shown in Fig. 27;

Figure 29 is a schematic diagram of a partially exploded structure of the camera module shown in Figure 27;

Figure 30 is a top view of the camera module shown in Figure 27;

Figure 31 is a schematic cross-sectional view of the structure shown in Figure 30 along line C-C;

Figure 32 is an enlarged schematic view of part b shown in Figure 31;

Fig. 33 is a partial structural schematic diagram of the camera module shown in Fig. 28;

Fig. 34 is another partial structural schematic diagram of the camera module shown in Fig. 28;

Figure 35 is a top view of the structure shown in Figure 34;

Figure 36 is a schematic structural diagram of the camera module shown in Figure 28 at another angle;

Figure 37 is a schematic cross-sectional view of the structure shown in Figure 30 along the D-D line;

38 is a schematic structural diagram of the camera module provided in the embodiment of the present application in Embodiment 5;

Fig. 39 is a partial structural schematic diagram of the camera module shown in Fig. 38;

40 is a schematic cross-sectional view of the camera module shown in FIG. 38;

41 is a schematic structural diagram of the camera module provided in the embodiment of the present application in Embodiment 6;

Figure 42 is a partial cross-sectional schematic view of the camera module shown in Figure 41;

FIG. 43 is a partial structural schematic diagram of the camera module shown in FIG. 41 .

Detailed ways

The embodiments of the present application will be described below with reference to the accompanying drawings in the embodiments of the present application.

Orientation terms mentioned in the embodiments of the present application, such as "upper", "lower", "left", "right", "inner", "outer", etc., only refer to the directions of the drawings, therefore, use The orientation terms are for better and clearer description and understanding of the embodiments of the present application, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a Limitations of application examples.

Please refer to FIG. 1 . FIG. 1 is a schematic structural diagram of an electronic device 100 provided by an embodiment of the present application. The electronic device 100 includes a casing 101 and a camera assembly 102 . The camera assembly 102 is accommodated in the casing 101 . The camera assembly 102 enables the electronic device 100 to realize functions such as capturing images or making instant video calls. The electronic device 100 may be a mobile phone, a tablet computer, a notebook computer, a vehicle-mounted device, a wearable device, a drone, and other products. The wearable device may be a smart bracelet, a smart watch, augmented reality (AR) glasses, virtual reality (virtual reality, VR) glasses, and the like. In the embodiments of the present application, description is made by taking the electronic device 100 as a mobile phone as an example.

In some embodiments, the electronic device 100 also includes a memory 103 , a graphics processor 104 and a battery 105 . Memory 103 is used to store computer program code. Computer program code includes computer instructions. The graphics processor 104 is used to invoke computer instructions to make the electronic device 100 perform corresponding operations. For example, the graphics processor 104 is connected in communication with the camera assembly 102 for acquiring image data from the camera assembly 102 and processing the image data. The battery 105 is used to power the electronic device 100 . The positions and shapes of the memory 103 , the graphics processor 104 and the battery 105 shown in FIG. 1 are only examples, which are not limited in the present application.

In some embodiments, the housing 101 includes a middle frame 1011 and a rear cover 1012 . The rear cover 1012 is provided with a camera hole 1013 for collecting light. The camera assembly 102 is located inside the back cover 1012 and acquires image information through the camera hole 1013 of the back cover 1012 . When the user is using the electronic device 100, the back cover 1012 is generally the side facing away from the user. The space facing the back cover 1012 is the rear of the electronic device 100 . In the embodiments of the present application, the camera assembly 102 is used as an example of a rear camera of the electronic device 100 for description.

Exemplarily, the camera assembly 102 includes a plurality of camera modules. The number of the camera holes 1013 is multiple, and the multiple camera holes 1013 are in one-to-one correspondence with the multiple camera modules. Multiple includes two or more. As shown in FIG. 1 , the camera assembly 102 includes a first camera module 1021 , a second camera module 1022 and a third camera module 1023 . In the embodiments of the present application, the camera assembly 102 includes three camera modules as an example for description. In other embodiments, the camera assembly 102 may also include two, four, or five camera modules. This is not limited.

In the embodiment of the present application, the electronic device 100 can be photographed through the cooperation of multiple camera modules, so as to improve the imaging quality of the electronic device 100 and meet the needs of users for photographing different scenes. For example, the camera assembly 102 of the electronic device 100 integrates a macro lens, a telephoto lens, and a wide-angle lens to meet the needs of users for shooting different scenes. The plurality of camera modules of the electronic device 100 can also integrate black and white lenses and color lenses, so as to improve the night scene effect captured by the electronic device 100 . In some other embodiments, the camera assembly 102 can also include a single camera module. The present application does not limit the specific functions, characteristics and numbers of the camera modules in the camera assembly 102 .

In some other embodiments, the electronic device 100 may further include a display screen (not shown in the figure) disposed opposite to the back cover 1012 . The display screen is used to display the picture. The camera assembly 102 collects the light outside the electronic device 100 through the camera hole of the display screen. At this time, the camera assembly 102 is used as a front camera of the electronic device 100 . In other words, the camera assembly 102 can be used as a rear camera of the electronic device 100, and can also be used as a front camera of the electronic device 100, which is not strictly limited in this embodiment of the present application. In the embodiments of the present application, the camera assembly 102 is used as an example of a rear camera of the electronic device 100 for description.

Please refer to FIGS. 2 and 3 . FIG. 2 is a schematic structural diagram of the camera module 10 provided in the embodiment of the present application in Embodiment 1; FIG. 3 is a partial structural schematic diagram of the camera module 10 shown in FIG. 2 . The camera module 10 shown in FIG. 3 does not include a housing. The electronic device provided in this application includes at least one camera module 10 . At least one contains one and more than one. In the embodiment of the present application, the camera module 10 is used as an example to describe any one of the first camera module 1021 , the second camera module 1022 or the third camera module 1023 in the camera assembly 102 in FIG. 1 . In other embodiments, the camera module 10 can also be applied to a front camera in an electronic device, which is not limited in this application.

The camera module 10 includes a lens 11 , a shape memory alloy (SMA) motor 12 , a base 13 , a circuit board 14 and a housing 17 . The lens 11 has the function of condensing light. Light enters the lens 11 from the light incident side of the lens 11 , and exits the lens 11 from the light exit side of the lens 11 . The main part of the lens 11 is located inside the SMA motor 12 , and part of the structure of the lens 11 protrudes to the outside of the SMA motor 12 . The SMA motor 12 can be used to realize anti-shake of the camera module 10 . The SMA motor 12 can also be used to realize the focus adjustment of the camera module 10, which is not limited in this application. The housing 17 surrounds the SMA motor 12 for protecting the SMA motor 12 .

Both the base 13 and the circuit board 14 are located below the SMA motor 12 , and the base 13 is mounted above the circuit board 14 . Wherein, in the embodiment of the present application, the light enters the lens 11 from above the lens 11 and exits from the bottom of the lens 11 . That is, the upper part is located on the light-incident side of the lens 11 , and the lower part is located on the light-emitting side of the lens 11 . Both the base 13 and the circuit board 14 are located on the light-emitting side of the lens 11 . The base 13 may be used to carry the SMA motor 12 . The circuit board 14 is located below the base 13 . Exemplarily, the base 13 is fixed to the circuit board 14 . The circuit board 14 is used to realize the electrical connection between the camera module 10 and other components (such as a graphics processor) in the electronic device, so as to realize signal transmission.

In some embodiments, the circuit board 14 is a circuit board having the characteristics of both printed circuit boards (PCB) and flexible printed circuit boards (FPC). As shown in FIG. 2 , the circuit board 14 exemplarily includes a hard board part 141 and a soft board part 142 drawn out from the hard board part 141 . The base 13 is fixed to the hard plate portion 141 . The soft board portion 142 is led out from the hard board portion 141 to the outside of the SMA motor 12 for electrically connecting other components in the electronic device, such as the above-mentioned graphics processor, to transmit the signal of the camera module 10 to the graphics processor. Exemplarily, the hard plate portion 141 includes a reinforcing structure, such as a reinforcing steel plate, which is not limited in the present application.

In some embodiments, the hard board portion 141 may be a rigid circuit board, and is provided with wires electrically connected to the soft board portion 142 , and the rigid circuit board may be connected to other components in the SMA motor 12 through various methods. At the same time, various components (such as image sensors) are mounted on the hard board part 141 , and are electrically connected to the flex board part 112 through a process, so that the signals obtained in the image sensor are transmitted to other components through the flex board part 112 (eg graphics processor). In some other implementation manners, the hard board portion 141 can also place a flexible circuit board and components on the substrate, and the flexible circuit board can be connected to the image sensor through a process such as wire bonding. The portion 142 leads out signal lines. Those skilled in the art can design the circuit board 14 according to actual requirements, and the present application does not limit the specific structure and forming process of the circuit board 14 .

In the embodiment of the present application, the soft board portion 142 can be bent and deformed, and the soft board portion 142 can be fixed at a required place through bending and deformation, which is beneficial to the arrangement of other components in the electronic device. The lens 11 is fixed relative to the hard plate portion 141 to ensure the stability of the lens 11 .

Please continue to refer to FIG. 3 and FIG. 4 . FIG. 4 is a schematic diagram of a partially exploded structure of the camera module 10 shown in FIG. 2 . The SMA motor 12 includes a fixed part 121 , a movable part 122 , a plurality of SMA wires 123 and a plurality of suspension wires 124 . The lens 11 is mounted on the inner side of the movable portion 122 , and the fixed portion 121 is located on the light-emitting side of the lens 11 . The fixing portion 121 is fixed above the base 13 . The movable part 122 is located above the fixed part 121 . A plurality of suspension wires 124 are connected between the fixed portion 121 and the movable portion 122 and are distributed around the movable portion 122 . Exemplarily, one end of each suspension wire 124 is straightly fixed to the fixed portion 121 , and the other end is straightly fixed to the movable portion 122 . It can be understood that the plurality of suspension wires 124 support the movable portion 122 above the fixed portion 121 .

The SMA wire 123 is connected between the fixed part 121 and the movable part 122 . When the SMA wire 123 is energized, it shrinks and drives the movable part 122 and the lens 11 to move relative to the fixed part 121 , so as to realize the anti-shake of the camera module 10 . Exemplarily, the SMA wire 123 is used to drive the movable part 122 and the lens 11 to move relative to the fixed part 121 along a plane perpendicular to the optical axis of the lens 11 . The number of SMA wires 123 is multiple, and the common force of the multiple SMA wires 123 drives the movable portion 122 to move relative to the fixed portion 121 .

In FIG. 3 , the outline of the line width of the SMA wire 123 is thick to show the outline of distinguishing the SMA wire 123 from the structure. The present application does not limit the thickness of the SMA wire 123, and those skilled in the art can select the SMA wire 123 according to actual needs. The SMA wire 123 uses a shape memory alloy (SMA) material, such as a nickel-titanium alloy material. Shape memory alloy is a general term for a class of metals with shape memory effect. Generally, when a metal material is subjected to an external force, elastic deformation occurs first. If the external force is removed at this time, the metal will return to its original shape. If the external force continues to increase, plastic deformation will occur when the metal reaches its own yield point. Permanent deformation remains after removal, and shape recovery does not occur even when heated. The shape memory alloy is an alloy material that can completely eliminate its deformation at a lower temperature after heating and restore its original shape before deformation. The basic working principle of shape memory alloy material is to heat the material above a certain critical temperature for shape memory heat treatment (training), and make it deform to a certain extent. After cooling to form the martensite phase, when it is heated above the critical temperature again, the low-temperature martensite phase reverses to the high-temperature austenite phase (ie, reverse transformation occurs), thereby returning to the state memorized before deformation .

In this embodiment, when the SMA wire 123 is energized, the heat generated by the energization makes the temperature of the SMA wire 123 increase, so that the reverse phase from the low-temperature martensite phase is changed to the high-temperature austenite phase, and the memory is restored to the memory before the denaturation, so that the The SMA wire 123 contracts. The length change caused by the shrinkage of the SMA wire 123 is substantially caused by the transformation of the crystal phase structure of the material, that is, the transformation between martensite and austenite. And this kind of attraction between microscopic particles due to the change of crystal structure (that is, the change of the gap between atoms) makes the pulling force of the macro SMA wire 123 when it shrinks is much larger than the electromagnetic force between the general magnet coils, so the SMA wire 123 The contraction of the SMA motor 12 can drive a heavier load, that is, a large load can be realized, so the SMA motor 12 can realize a large driving force with a smaller size.

In this embodiment, since the SMA wires 123 contract when energized, a corresponding pulling force will be generated on the movable portion 122 . Therefore, the camera module 10 can control the electrical signals of the plurality of SMA wires 123 so that the plurality of SMA wires are connected to the movable portion 122 . The applied resultant force is directed toward the desired direction, thereby driving the movable portion 122 including the lens 11 to move toward the desired direction and position, so that the camera module 10 can achieve anti-shake by translating the lens 11 .

As shown in FIG. 4 , the camera module 10 further includes an image sensor 15 and a filter 16 . Both the image sensor 15 and the filter 16 are located below the SMA motor 12 . The image sensor 15 is a device that converts an optical image into an electrical signal. The light from the outside world passes through the lens 11 and then falls on the photosensitive surface of the image sensor 15 to form an image on the image sensor 15 . The image sensor 15 may be a charge-coupled device (CCD) or a complementary metal-oxide semiconductor (CMOS), which is not limited in this application. The filter 16 is used to filter stray light in the light passing through the lens 11 . Exemplarily, the base 13 is provided with a stepped structure for fixing the filter 16 .

Please refer to FIG. 3 and FIG. 5 together. FIG. 5 is a schematic diagram of a partially exploded structure of the SMA motor 12 shown in FIG. 4 . In some embodiments, the fixing part 121 includes a bottom plate 1211 and a fixing plate 1212 . The bottom plate 1211 is fixed above the base 13, and the fixing plate 1212 is fixed above the bottom plate. In the embodiment of the present application, the bottom plate 1211 and the base 13 are two different components, and the bottom plate 1211 is fixed to the circuit board 14 through the base 13 as an example for description. In some other embodiments, the bottom plate 1211 and the base 13 can be integrally formed, which is not limited in this application.

The movable part 122 includes a movable plate 1221 and a focusing assembly 1222 . The movable plate 1221 is located above the fixed plate 1212 . The focusing assembly 1222 is installed above the movable plate 1221 to drive the lens 11 to move along the optical axis of the lens 11 to realize focusing of the camera module 10 . In the embodiment of the present application, the movable part 222 can not only drive the lens 21 to move along a plane perpendicular to the optical axis of the lens 21 under the action of the SMA wire 223 to realize the anti-shake of the camera module 20, but also adjust the adjustment of the movable part 222. The focus assembly 1222 can drive the lens 21 to move relative to the fixed portion 221 along the optical axis of the lens 21 to realize the focus adjustment of the camera module 20, so that the camera module 20 has anti-shake and focus adjustment at the same time, which improves the imaging of the camera module 20. quality.

In the implementation of this application, the movable part 122 in the SMA motor 12 includes the focusing assembly 1222 for focusing as an example for description. At this time, the SMA motor 12 can not only realize the anti-shake of the camera module 10, but also realize the camera Focusing of module 10. In other embodiments, the movable part 122 in the SMA motor 12 can also not include the focusing assembly 1222 , which is not limited in the present application. For example, in other embodiments, the movable part 122 only includes the movable plate 1221 and the lens carrier for fixing the lens 11 . The lens 11 is mounted on the inner side of the lens carrier, so that the movable part 122 drives the lens 11 to move relative to the fixed part 121 .

Please continue to refer to FIG. 6 , which is a top view of a partial structure of the SMA motor 12 shown in FIG. 4 . The number of SMA wires 123 is multiple, and the multiple SMA wires 123 are symmetrically arranged on the periphery of the movable plate 1221. One end of each SMA wire 123 is fixed to the fixed plate 1212 , and the other end is fixed to the movable plate 1221 . The joint action of the plurality of SMA wires 123 drives the movable plate 1221 and the structure mounted on the movable plate 1221 to translate together. Exemplarily, the number of SMA wires 123 is four. The four SMA wires 123 include a first SMA wire 1231 , a second SMA wire 1232 , a third SMA wire 1233 and a fourth SMA wire 1234 .

The first SMA wire 1231 and the second SMA wire 1232 are arranged symmetrically with respect to the first reference plane 1235 , and the third SMA wire 1233 and the fourth SMA wire 1234 are arranged symmetrically with respect to the second reference plane 1236 . Both the first reference plane 1235 and the second reference plane 1236 pass through the optical axis 110 of the lens 11 . At this time, the first reference plane 1235 and the second reference plane 1236 intersect. Exemplarily, the first reference plane 1235 and the second reference plane 1236 are perpendicular to each other. In other embodiments, the angle between the first reference plane 1235 and the second reference plane 1236 may also be other angles. The first SMA wire 1231 and the second SMA wire 1232 form a first pair of SMA wires, and the third SMA wire 1233 and the fourth SMA wire 1234 form a second pair of SMA wires. The first pair of SMA wires and the second pair of SMA wires are symmetrically arranged relative to the second reference plane 1236 .

In this embodiment, by defining the positional relationship of the four SMA wires 123, the camera module can control the electrical signals in the four SMA wires 123, so that the resultant force of the four SMA wires 123 on the movable plate 1221 is along the first reference The surface 1235 moves or moves along the second reference surface 1236, and the movable plate 1221 can carry the lens 11 and move to the camera module through the synthetic displacement of the displacement on the first reference surface 1235 and the displacement on the second reference surface 1236. Any position on the XY plane (that is, the vertical plane of the optical axis 110 of the lens 11 ), so as to realize the translational anti-shake of the camera module 10 .

One end of the SMA wire 123 can pass through the fixing claw fixed on the fixed plate 1212 , and the other end of the SMA wire 123 can pass through the movable claw fixed on the movable plate 1221 . The fixed claw and the movable claw can be made of conductive material, or formed into a conductive structure, so that the SMA wire 123 is electrically connected to the movable plate 1221 and the fixed plate 1212 .

It can be understood that, under the condition that the four SMA wires 123 of the camera module meet the above positional relationship requirements, there may be various specific connection modes, and this embodiment takes one of them as an example for description.

As shown in FIG. 6 , exemplarily, both the fixed plate 1212 and the movable plate 1221 are substantially rectangular plates. A first fixing claw 1261 , a second fixing claw 1262 , a third fixing claw 1263 and a fourth fixing claw 1264 are respectively provided at two opposite corners of the fixing plate 1212 . The first fixing claws 1261 and the second fixing claws 1262 are one set of fixing claws, and the third fixing claws 1263 and the fourth fixing claws 1264 are another set of fixing claws. The two sets of fixing claws are located at two opposite corners of the fixing plate 1212 respectively. A first movable claw 1271 , a second movable claw 1272 , a third movable claw 1273 and a fourth movable claw 1274 are respectively provided at two opposite corners of the movable plate 1221 . The first movable claw 1271 and the second movable claw 1272 are one group, and the third movable claw 1273 and the fourth movable claw 1274 are another group. The two sets of movable claws are respectively located at two opposite corners of the movable plate 1221 , and the two sets of fixed claws and the two sets of movable claws are respectively located at four opposite corners.

One end of the first SMA wire 1231 is fixed to the first fixing claw 1261 , and the other end is fixed to the first movable claw 1271 . One end of the second SMA wire 1232 is fixed to the second fixing claw 1262 , and the other end is fixed to the fourth movable claw 1274 . One end of the third SMA wire 1233 is fixed to the third fixing claw 1263 , and the other end is fixed to the third movable claw 1273 . One end of the fourth SMA wire 1234 is fixed to the fourth fixing claw 1264 , and the other end is fixed to the second movable claw 1272 .

In the embodiment of the present application, one end of the SMA wire 123 is fixed at one diagonal position of the fixed plate 1212 , and the other end is fixed at the other diagonal position of the movable plate 1221 . When the space inside the SMA motor 12 is limited, the SMA wire 123 is limited. The SMA motor 12 has a relatively sufficient length and sufficient telescopic amount, so that the SMA motor 12 has a large driving stroke range, which is beneficial to realize the large-angle anti-shake of the camera module 10 .

In some other embodiments, the movable plate 1221 and the fixed plate 1212 may also have other shapes, such as a rounded rectangular plate, a circular plate, and the like. It can be understood that, when the respective sides of the peripheral sides of the movable plate 1221 and the fixed plate 1212 change adaptively as the shapes of the movable plate 1221 and the fixed plate 1212 change.

Please continue to refer to FIG. 7 . FIG. 7 is a schematic cross-sectional view of the camera module 10 shown in FIG. 2 along the line A-A. The bottom plate 1211 is fixed above the base 13 . The casing 17 is fixed to the bottom plate 1211 . The fixing plate 1212 is fixed above the bottom plate 1211 . The movable part 122 is located above the fixed plate 1212 . The lens 11 is mounted on the inner side of the movable portion 122 . The movable plate 1221 in the movable portion 122 faces the fixed plate 1212 , and the lens 11 is located above the movable plate 1221 . The housing 17 is a hollow structure with open ends at both ends. The fixed plate 1212 , the movable portion 122 and the lens 11 are accommodated inside the housing 17 .

In some embodiments, the image sensor 15 is fixed to the side of the circuit board 14 facing the lens 11 . The image sensor 15 is electrically connected to the circuit board 14 , so that the electrical signals formed by the image sensor 15 are transmitted to other components through the circuit board 14 . The lens 11 is located on the side of the base 13 away from the image sensor 15 . The filter 16 is fixed on the base 13 and is disposed opposite to the image sensor 15 . Illustratively, the projection of the filter 16 on the circuit board 14 partially or completely overlaps the projection of the image sensor 15 on the circuit board 14 .

In the embodiment of the present application, the light passing through the lens 11 from the outside is irradiated on the image sensor 15 after passing through the light filter 16 . The filter 16 is located between the image sensor 15 and the lens 11 , and can filter stray light in the light passing through the lens 11 , so that the photos taken by the camera module 10 are more realistic, thereby improving the quality of the camera module 10 .

Please refer to FIG. 5 and FIG. 7 together. In some embodiments, the bottom plate 1211 is provided with a first light-passing hole 1201 passing through the bottom plate 1211 . The fixing plate 1212 is provided with a second light-transmitting hole 1202 penetrating through the fixing plate 1212 . The movable plate 1221 is provided with a third light-passing hole 1203 penetrating through the movable plate 1221 . The first light-passing hole 1201 , the second light-passing hole 1202 , and the third light-passing hole 1203 are connected in sequence and disposed opposite to the filter 16 . The second light-passing hole 1202 communicates with the third light-passing hole 1203 and communicates with the first light-passing hole 1201 . The first light-passing hole 1201 , the second light-passing hole 1202 and the third light-passing hole 1203 form a light channel 120 penetrating through the bottom plate 1211 , the fixed portion 121 and the movable plate 1221 .

As shown in FIG. 5 , the shapes of the third light-passing hole 1203 , the second light-passing hole 1202 , and the first light-passing hole 1201 are only examples, which are not limited in the present application. After the bottom plate 1211 , the fixed plate 1212 and the movable plate 1221 are assembled, the first light-passing hole 1201 , the second light-passing hole 1202 and the third light-passing hole 1203 together form the light channel 120 . The light channel 120 is located between the lens 11 and the filter 16 .

In the embodiment of the present application, the bottom plate 1211 , the fixed portion 121 and the movable plate 1221 located between the lens 11 and the filter 16 are provided with light channels 120 , so that the light passing through the lens 11 directly passes through the filter 16 to filter stray light , to avoid the loss of light and affect the imaging quality of the image.

Please refer to FIG. 7 and FIG. 8 together. FIG. 8 is a schematic diagram of a partially exploded structure of the focusing assembly shown in FIG. 5 . Exemplarily, the focusing assembly 1222 includes a base 1223 , a lens carrier 1224 , a first driving member 1225 , a second driving member 1226 , a spring plate 1227 and a connecting plate 1228 . The base 1223 is fixed above the movable plate 1221 . The lens carrier 1224 is used to carry the lens 11 . The first driving member 1225 is fixed relative to the base 1223 , and the second driving member 1226 is fixed relative to the lens carrier 1224 . The spring 1227 can be used to connect the base 1223 to the lens carrier 1224 . Illustratively, the reeds 1227 include a plurality of upper reeds 1229 and a plurality of lower reeds 1220 .

The connecting piece 1228 is used to realize the transmission of electrical signals of the focusing assembly 1222 . The connecting piece 1228 may be a circuit board or a structural member provided with wires, which is not limited in this application. When the focusing assembly 1222 responds to the electrical signal, a magnetic field effect is formed between the second driving member 1226 and the first driving member 1225 to drive the lens 11 to move relative to the base plate 1211 .

In the embodiment of the present application, when the SMA motor 12 responds to the electrical signal, the movable portion 122 drives the lens 11 to move together relative to the fixed portion 121 . In the first embodiment of the present application, the movable part 122 includes the focusing assembly 1222 as an example for description, and the moving direction may be the optical axis direction of the lens 11 or a plane movement perpendicular to the optical axis of the lens 11 . For example, when the SMA motor 12 responds to the electrical signal, it can drive the lens 11 to move relative to the fixed part 121 along a plane perpendicular to the optical axis of the lens 11 to compensate for the deviation of the optical path and realize the anti-shake of the camera module 10 . When the SMA motor 12 can also drive the lens 11 to move relative to the fixed portion 121 along the optical axis of the lens 11 in response to the electrical signal, the distance between the lens 11 and the image sensor 15 is changed to realize the focus adjustment of the camera module 10 .

Please continue to refer to FIG. 7 and FIG. 8 , the base 1223 is fixed above the movable plate 1221 . The first driving member 1225 is fixed on the base 1223 . The lens 11 is fixed to the inner side of the lens carrier 1224 . The second driving member 1226 is fixed on the outer side of the lens carrier 1224 and is disposed opposite to the first driving member 1225 . The lens carrier 1224 is connected to the base 1223 through a spring 1227 . The lens carrier 1224 is suspended relative to the base 1223 , and the spring 1227 supports the lens carrier 1224 , the second driving member 1226 fixed on the lens carrier 1224 and the lens 11 .

In the embodiment of the present application, when the first driving member 1225 or the second driving member 1226 responds to the electrical signal, a magnetic field effect is formed between the second driving member 1226 and the first driving member 1225, and the lens 11 is driven along a direction perpendicular to the lens 11. The direction of the optical axis 110 is moved to change the distance between the lens 11 and the image sensor 15 , so as to realize the focus adjustment of the camera module 10 .

In some embodiments, the first driver 1225 includes a magnetic body, and the second driver 1226 includes a coil. As shown in FIG. 8 , exemplarily, the number of magnetic bodies and coils is two. The two magnetic bodies are respectively fixed on opposite sides of the base 1223 , and the two coils are respectively fixed on opposite sides of the lens carrier 1224 . The two magnetic bodies are in one-to-one correspondence with the two coils. When the coil is energized, an electromagnetic force is generated between the coil and the corresponding magnetic body, and the driving coil drives the lens 11 to move in the direction of the optical axis 110 of the lens 11 . For example, the magnetic body and coil on the left side in FIG. 7 generate an upward electromagnetic force on the lens carrier 1224, and the magnetic body and coil on the right side also generate an upward electromagnetic force on the lens carrier 1224, so that the lens carrier 1224 and the lens 11 move upward together , the distance between the lens 11 and the image sensor 15 is changed, thereby realizing the focus adjustment of the camera module 10 .

In the embodiment of the present application, the first driving member 1225 includes a magnetic body, and the second driving member 1226 includes a coil. The overall weight of the lens 11 is relatively small, so that the load of the reed 1227 is relatively small, thereby helping to reduce the power consumption of the camera module 10 for focusing. In other embodiments, the first driving member 1225 may also include a coil, and the second driving member 1226 may include a magnetic body, which is not limited in this application.

In the embodiment of the present application, the number of the magnetic body and the coil is two, which are respectively located on opposite sides of the lens carrier 1224 for description. In other embodiments, the numbers of the magnetic bodies and the coils may not be in one-to-one correspondence, which is not limited in the present application. For example, the number of magnetic bodies is four, and the number of coils is one. The four magnetic bodies are respectively fixed at the four diagonal corners of the base 1223 , a single coil is fixed and surrounds the lens carrier 1224 , and the electromagnetic force between the four magnetic bodies and the coils is upward or downward to drive the lens 11 Move in the direction perpendicular to the optical axis 110 of the lens 11 .

Please continue to refer to FIG. 7 and FIG. 9 . FIG. 9 is a schematic structural diagram of a part of the camera module 10 shown in FIG. 3 . A plurality of upper springs 1229 and a plurality of lower springs 1220 are located at opposite ends of the lens carrier 1224 respectively. The plurality of upper springs 1229 are distributed around the lens carrier 1224 and correspond to the plurality of suspension wires 124 one-to-one. One end of each upper spring 1229 is fixed to the top side of the lens carrier 1224 , and the other end is fixed to the corresponding suspension wire 124 . A plurality of lower springs 1220 are fixed to the bottom side of the lens carrier 1224 . Light enters the lens from the top side of the lens carrier 1224 toward the bottom side of the lens carrier 1224 . Exemplarily, one end of the suspension wire 124 is fixed to the bottom plate 1211 , so that one end of the upper spring 1229 is fixed relative to the bottom plate 1211 . The lower spring 1220 connects the base 1223 and the lens carrier 1224 . The lens 11 is fixed to the inner side of the lens carrier 1224 . When the movable plate 1221 moves under the force of the SMA wire 123, the base 1223, the lower spring 1220, the lens carrier 1224 and the lens 11 move together.

In the embodiment of the present application, the reed 1227 includes an upper reed 1229 and a lower reed 1220 respectively fixed on the upper and lower ends of the lens carrier 1224. When the focusing assembly 1222 drives the lens 11 to move in response to an electrical signal, the upper reed 1229 and the lower reed 1220 The sheet 1220 has elasticity to provide a buffer force for the movement of the lens 11, preventing the lens 11 from suddenly moving in the direction of the optical axis 110 of the lens 11, and making the movement of the lens 11 more stable. At the same time, after the focusing assembly 1222 is powered off, the focusing assembly 1222 has no driving force for the lens 11, and the upper reed 1229 and the lower reed 1220 have the ability to restore the deformation after deformation. The upper reed 1229 and the lower reed 1220 Drive the lens 11 to move back to the initial position, so that the lens 11 is reset.

Wherein, in the embodiments of the present application, the reeds 1227 are directly connected to the lens carrier 1224 . In some other embodiments, the reed 1227 can also be indirectly connected to the lens carrier 1224 , and the embodiments of the present application do not limit the specific connection method of the reed 1227 and the lens carrier 1224 .

In some embodiments, the upper spring 1229 includes a first straight portion, a bent portion, and a second straight portion that are connected in sequence. The first straight portion is fixed on the lens carrier 1224 , and the second straight portion is fixed on the base 1223 . The bent portion is located in the gap formed by the lens carrier 1224 and the base 1223 . Exemplarily, the first straight portion, the bent portion and the second straight portion are integrally formed, which saves the assembly time of the upper spring 1229 and prevents the upper spring 1229 from being deformed during the assembly process.

In the embodiment of the present application, the upper reed 1229 is fixed to one end of the lens carrier 1224, and the other end fixed to the base 1223 is a straight part, so that the two ends of the upper reed 1229 are in the same horizontal plane, so as to avoid the upper reed 1229. During the deformation process of the bent portion in 1229 , the first straight portion is driven to bend to cause the lens 11 to tilt, thereby improving the focusing accuracy of the camera module 10 .

In some embodiments, one end of each suspension wire 124 is fixed to the bottom plate 1211 , and the other end is fixed to the upper spring 1229 . One ends of the plurality of suspension wires 124 are fixed to the plurality of upper springs 1229 in a one-to-one correspondence. The plurality of suspension wires 124 are symmetrically arranged on the periphery of the movable portion 122 to ensure that the plurality of suspension wires 124 support the movable portion 122 stably.

In the embodiment of the present application, the plurality of suspension wires 124 support the movable portion 122 to prevent the plurality of SMA wires 123 from bearing the weight of the movable portion 122 , thereby affecting the performance of the SMA wires 123 . In addition, one end of the plurality of suspension wires 124 is fixed to the upper spring 1229 of the focusing assembly 1222 . The upper spring 1229 can not only provide a buffer force for the lens 11 to move along the optical axis 110 of the lens 11 , but also provide a buffer force for the movable part 122 When moving along a plane perpendicular to the optical axis 110 of the lens 11 , a buffer force is provided for the movement of the movable part 122 , so that the movement of the movable part 122 is more stable. At the same time, after the SMA wire 123 is powered off, there is no driving force to the movable part 122, and the upper reed 1229 elastically drives the movable part 122 and the lens 11 to move back to the initial position, so that the movable part 122 and the lens 11 are reset. That is, the plurality of suspension wires 124 are fixedly connected to the upper spring 1229 of the focusing assembly 1222, which solves the problems of abnormal shaking of the movable part 122 and poor posture.

In addition, one end of the suspension wire 124 is fixed to the bottom plate 1211 , and the other end is fixed to the upper spring 1229 on the side of the movable part away from the base plate 1211 . It can be tilted on the basis of the suspending wire 124 which is too short and cannot be tilted, thereby hindering the movement of the movable part 122 relative to the fixed part 121 .

In the conventional technology, the SMA anti-shake assembly includes two spring arms connected between the fixed part and the movable plate. The spring arm is used to solve the problem of abnormal shaking of the movable part and poor posture. The spring arm needs to be designed with a certain elastic margin to ensure that the SMA wire can return to the original position after the power is turned off; and the elastic margin of the spring arm needs to be designed with an upper limit to avoid excessive force on the SMA wire by the spring arm, so as to ensure the SMA wire The service life of the spring arm increases the design difficulty of the spring arm.

In the embodiment of the present application, the plurality of suspension wires 124 supporting the movable portion 122 are fixedly connected to the upper spring 1229 of the focusing assembly 1222. The upper spring 1229 has elasticity and can provide a buffer force for the movement of the movable portion 122, and can also Drive the movable part 122 and the lens 11 to move back to the initial position, so that the movable plate in the movable part 122 does not need to be additionally provided with a spring arm connected to the fixed part 121 , which avoids the technical difficulty of setting the spring arm, thereby reducing the cost of the camera module 10 cost. In the embodiment of the present application, the plurality of suspension wires 124 are fixedly connected to the upper spring 1229 of the focusing assembly 1222, which solves the problems of abnormal shaking of the movable part 122 and poor posture.

Exemplarily, the plurality of upper reeds 1229 are arranged symmetrically, and the plurality of suspension wires 124 are arranged symmetrically. The numbers of the upper reeds 1229 and the suspension wires 124 are both four, and the four upper reeds 1229 are in one-to-one correspondence with the four suspension wires 124 . The four reeds 1227 and the four suspension wires 124 are symmetrically arranged in the X-axis direction and symmetrically arranged in the Y-axis direction. Both the X-axis direction and the Y-axis direction are perpendicular to the Z-axis direction, and both intersect with the Z-axis direction. The Z-axis direction is the optical axis of the lens 11 .

The length and extension direction of each suspension wire 124 are the same, so that when each suspension wire 124 is subjected to the same force, the inclination angle is the same, so as to prevent the inclination angle of each suspension wire 124 from being different, which will lead to the inclination of the lens 11, thereby improving the camera performance. Module 10 Stabilization Accuracy.

In the embodiment of the present application, the plurality of suspension wires 124 supporting the movable part 122 are arranged symmetrically, and when the camera module 10 is in different postures, the acting force of each suspension wire 124 on the movable part 122 is the same, which is beneficial to reduce camera The control difficulty of the module 10 drive algorithm. The plurality of upper reeds 1229 are arranged symmetrically, and each upper reed 1229 exerts the same force on each suspension wire 124 , so that each suspension wire 124 receives a balanced force.

Please refer to FIG. 7 and FIG. 10 together. FIG. 10 is a partial structural diagram of the structure shown in FIG. 7 . The movable part 122 is suspended above the fixed part 121 . Exemplarily, the movable plate 1221 of the movable part 122 facing the fixed part 121 is arranged spaced apart from the fixed part 121 . One end of each suspension wire 124 is straightly fixed to the bottom plate 1211 , and the other end is straightly fixed to the movable portion 122 , so as to support the movable portion 122 on the fixed portion 121 in a suspended manner, and no additional arrangement is required between the movable portion 122 and the fixed portion 121 . A support member is provided, so that the movable part 122 is spaced apart from the fixed part 121 .

In the conventional technology, the SMA motor includes a fixed part, a movable part, and a support member located between the fixed part and the movable part. The support is used to support the movable part. When the movable part moves relative to the fixed part along a plane perpendicular to the optical axis of the lens, the movable part and the support are slidably connected, and there is friction between the sliding surfaces of the movable part and the support, and the friction interferes with the movement of the movable part. Because the friction force is related to the pressure on the support, when the pressure on the support is different, the friction between the support and the movable part is different, so the electronic device is in different postures, and the gravity direction of the movable part and the sliding surface form Different angles cause different pressures on the sliding surface, resulting in different sliding friction between the movable part and the support, which interferes with the accuracy of the camera module's anti-shake.

In the embodiment of the present application, however, the camera module 10 is provided with a plurality of suspension wires 124 supporting the movable portion 122 , so that the movable portion 12 is suspended above the fixed portion 121 , and there is no need for any additional connection between the fixed portion 121 and the movable portion 122 . A support for supporting the movable part 122 is provided, and the fixed part 121 and the movable part 122 are arranged at intervals, so that when the movable part 122 moves relative to the fixed part 121, there is no sliding friction between the movable part 122 and the fixed part 121, This avoids the difficulty of the driving algorithm of the camera module 10 caused by different frictional forces between the movable portion 122 and the fixed portion 121 when the electronic device is in different postures.

It can be understood that when the SMA wire 123 is energized, it shrinks and drives the movable portion 122 to move on a plane perpendicular to the optical axis 110 of the lens 11 . The rigidity of the wire 124 interferes with the movement of the movable portion 122 relative to the fixed portion 121 , thereby facilitating the stabilization of the camera module 10 . After the SMA wire 123 is powered off, there is no force on the movable part 122. During the process of the movable part 122 returning to the initial position, the upper reed 1229 connected with the movable part 122 can buffer the force of the movable part 122, so that the movable part 122 can be smoothly return to the original position.

Please refer to FIG. 11 and FIG. 12 together. FIG. 11 is a partial structural schematic diagram of the SMA motor 12 shown in FIG. 3 ; FIG. 12 is a partial structural schematic diagram of the structure shown in FIG. 11 . The partial structure of the SMA motor 12 shown in FIG. 12 does not include the movable plate 1221 compared to the partial structure of the SMA motor 12 shown in FIG. 11 .

The SMA motor 12 also includes an anti-shake lead-in 125 and an anti-shake lead 126 . The anti-shake lead-in wire 125 and the anti-shake lead-out wire 126 are respectively electrically connected to the SMA wire 123 to form a closed loop. It can be understood that the anti-shake lead-in wire 125 and the anti-shake lead-out wire 126 can be regarded as the positive and negative poles of the SMA wire 123, respectively. Exemplarily, both the anti-shake lead-in line 125 and the anti-shake lead-out line 126 are led out through the bottom plate 1211 . As shown in FIG. 11 , the bottom plate 1211 is provided with a first escape opening 171 . The anti-shake lead-in line 125 and the anti-shake lead-out line 126 are led out from the first escape opening 171 .

In the embodiment of the present application, the anti-shake lead-in 125 and the anti-shake lead 126 are led out from the bottom plate 1211 and are electrically connected to the circuit board to control the electrical signal of the input SMA cable 123 to control the movement of the movable plate 1221 to compensate the optical path The offset of , realizes the line control of anti-shake of the camera module 10.

In some embodiments, the number of anti-shake lead-in lines 125 is multiple. The plurality of anti-shake lead-in wires 125 are electrically connected to the plurality of SMA wires 123 in a one-to-one correspondence, so as to control the magnitude of the current flowing into each SMA wire 123 . Exemplarily, the anti-shake lead-in line 125 includes a first line 1251, a second line 1252, a third line 1253 and a fourth line 1254. The first line 1251 is electrically connected with the first SMA line 1231, the second line 1252 is electrically connected with the second SMA line 1232, the third line 1253 is electrically connected with the third SMA line 1233, and the fourth line 1254 is electrically connected with the fourth SMA line Line 1234 is electrically connected.

In some embodiments, a plurality of anti-shake lead-ins 125 are located on the same side of the movable plate 1221 and are all disposed on the fixed plate 1212 . A plurality of anti-shake lead-in wires 125 are disposed on the side of the fixing plate 1212 away from the bottom plate 1211 and lead out from the bottom plate 1211 . That is, the plurality of anti-shake lead-in wires 125 are arranged on the side of the fixed plate 1212 facing the movable plate 1221 . The anti-shake lead wires 126 are arranged on the bottom plate 1211 and lead out from the bottom plate 1211 .

In the embodiment of the present application, the anti-shake lead-in line 125 and the anti-shake lead-out line 126 are located on opposite sides of the fixed plate 1212 respectively, so as to avoid the difficulty of circuit design due to the large number of lines on the fixed plate 1212 .

Exemplarily, the first fixing claws 1261 , the second fixing claws 1262 , the third fixing claws 1263 and the fourth fixing claws 1264 are made of conductive material. The first wire 1251 is connected to the first fixing claw 1261 to realize the electrical connection between the first wire 1251 and the first SMA wire 1231 . The second wire 1252 is connected to the second fixing claw 1262 to realize the electrical connection between the second wire 1252 and the second SMA wire 1232 . The third wire 1253 is connected to the third fixing claw 1263 to realize the electrical connection between the third wire 1253 and the third SMA wire 1233 . The fourth wire 1254 is connected to the fourth fixing claw 1264 to realize the electrical connection between the fourth wire 1254 and the fourth SMA wire 1234 .

Please continue to refer to FIG. 11 and FIG. 12 , in some embodiments, the camera module 10 further includes a sub-suspension wire 127 and an anti-shake connecting wire 128 connected to the sub-suspension wire 127 . One end of the auxiliary suspension wire 127 is fixed to the bottom plate 1211 and is connected to the anti-shake lead wire 126 provided on the bottom plate 1211 . The other end of the auxiliary suspension wire 127 is fixedly connected to the movable part, and is connected to the anti-shake connecting wire 128 . The sub-suspension wire 127 is connected between the anti-shake lead wire 126 and the SMA wire 123 . The anti-shake connecting line 128 is electrically connected between the auxiliary suspension line 127 and the movable plate 1221 . Exemplarily, the anti-shake connecting wire 128 is connected to the metal terminal 1280 on the movable plate 1221 .

In some embodiments, both the sub-suspension 127 and the movable plate 1221 are made of conductive material. Each SMA wire 123 is electrically connected to the movable plate 1221 , so that the plurality of SMA wires 123 are electrically connected to the auxiliary suspension wires 127 respectively through the movable plate 1221 . One end of the auxiliary suspension wire 127 is fixed on the bottom plate 1211 and is electrically connected with the anti-shake lead wire 126 , so that the plurality of SMA wires 123 pass through the movable plate 1221 , the anti-shake connecting wire 128 , the auxiliary suspension wire 127 and the anti-shake lead wire 126 electrical connections.

In the embodiment of the present application, the plurality of anti-shake lead-in wires 125 are respectively electrically connected to the plurality of SMA wires 123 , and the plurality of SMA wires 123 are fixed to the movable plate 1221 made of conductive material. The auxiliary suspension wire 127 is electrically connected to the anti-shake lead wire 126 to realize a closed-loop circuit of the anti-shake circuit in the SMA motor 12 . Among them, a plurality of anti-shake lead-in wires 125 are arranged in parallel, and finally connected in series with the anti-shake lead-out wire 126 through the movable plate 1221 and the auxiliary suspension wire 127, which saves the number of anti-shake lead-in wires 126 and is beneficial to simplify the circuit design of the SMA wire.

Please refer to FIG. 11 to FIG. 13 together. FIG. 13 is a circuit schematic diagram of the structure shown in FIG. 11 . The plurality of anti-shake lead-in wires 125 are connected to the plurality of SMA wires 123 in one-to-one correspondence, and the plurality of SMA wires 123 are arranged in parallel. Move in different directions. The movable board 1221 is made of conductive material, and the plurality of SMA wires 123 are electrically connected to the movable board 1221 , and the movable board 1221 is electrically connected to the anti-shake lead wire located on the bottom plate 1211 through the anti-shake connecting line 128 and the auxiliary suspension line 127 . The electrical signals in the plurality of SMA wires 123 are converged and drawn out through the anti-shake lead wire, so as to realize a closed-loop circuit of anti-shake. It can be understood that the anti-shake lead-in wire 125 , the plurality of SMA wires 123 , the movable plate 1221 , the anti-shake connecting wire 128 , the auxiliary suspension wire 127 and the anti-shake lead wire 126 form a closed loop.

Please continue to refer to FIG. 14 . FIG. 14 is a schematic structural diagram of another part of the SMA motor 12 shown in FIG. 3 . One end of the auxiliary suspension wire 127 is fixed to the bottom plate 1211 , and the other end is fixed to the side of the base 1223 away from the bottom plate 1211 . Part of the structure of the anti-shake connecting wire 128 is embedded in the base 1223 , which is not only beneficial to the miniaturization of the camera module 10 , but also avoids the circuit arrangement of the camera module 10 from being chaotic.

In some embodiments, the extension direction of the sub-suspension wire 127 is the same as that of the suspension wire 124 , and the sub-suspension wire 127 is made of the same material as the suspension wire 124 , so that when the base 1223 moves under the force of the SMA wire 123 , The auxiliary suspension wires 127 will not interfere with the anti-shake of the camera module 10 by involving the base 1223 . In other embodiments, the auxiliary suspension wire 127 can also be a wire that does not generate force on the movable part 122 (the base 1223 ).

In some embodiments, the camera module 10 further includes balance suspension wires 129 symmetrically arranged with the auxiliary suspension wires 127 . As shown in FIG. 14 , the balance suspension wires 129 and the auxiliary suspension wires 127 are respectively located at two opposite corners of the base 1223 . The extension direction and length of the balance suspension wire 129 and the auxiliary suspension wire 127 are the same. When the base 1223 moves under the force of the SMA wire 123 , the balance suspension wire 129 and the auxiliary suspension wire 127 receive the same force.

In the embodiment of the present application, the number of the anti-shake lead-out line is one, and only one auxiliary suspension line 127 is needed to realize the electrical connection between the anti-shake lead-in line and the anti-shake lead-out line. During the anti-shake process of the SMA motor 12, a force is generated between the base 1223 and the auxiliary suspension wire 127. At this time, the balance suspension wire 129 and the auxiliary suspension wire 127 are symmetrically arranged for balancing the auxiliary suspension wire 127 to the base. The force of the base 1223 balances the force of the base 1223 , which is beneficial to the anti-shake of the camera module 10 .

As shown in FIG. 14 , the connecting piece 1228 is fixed on the side of the base 1223 . The connecting piece 1228 and the first driving member 1225 (magnetic body) are located on different sides of the base 1223 respectively. Exemplarily, the two magnetic bodies are respectively fixed on opposite sides of the base 1223, and the connecting piece 1228 is fixed between the two magnetic bodies. The connecting piece 1228 is electrically connected to the second driving member 1226 (coil). Exemplarily, the two oppositely arranged coils are electrically connected to the connecting piece 1228 through the two lower spring pieces 1220 respectively.

Please refer to FIG. 14 and FIG. 15 together. FIG. 15 is a schematic structural diagram of another part of the camera module 10 shown in FIG. 3 . Focus assembly 1222 also includes position detector 1200 . The position detector 1200 is located inside the connecting piece 1228 . The position detector 1200 is used to detect the position of the lens relative to the fixed part. Exemplarily, the position detector 1200 performs position detection by detecting changes in the magnetic field.

In some embodiments, both the position detector 1200 and the second driving member 1226 (coil) are electrically connected to external devices through the connecting piece 1228 to simplify the circuit design of the focusing assembly 1222 . Exemplarily, the position detector 1200 is embedded in the base 1223, and the space of the position detector 1200 and the base 1223 is multiplexed, so that the camera module 10 is more miniaturized. In some other embodiments, the position detector 1200 can also be provided in other positions, which is not limited in the present application.

In this embodiment, the position detector 1200 and the driver IC are integrated chips, and the number of pins of the second driver 1226 (coil) and the position detector 1200 is reduced by sharing the power supply and communication. . That is, the position detector 1200 adopts a detection, driving, and control integrated chip (all in one). Wherein, those skilled in the art can design the position detector 1200 according to actual requirements, and the present application does not limit the specific driving method of the position detector 1200 and the electrical connection method with the second driving member 1226 (coil), etc.

In some embodiments, the lower reed 1220 is electrically connected with the second driving member 1226 (coil), and is electrically connected with the connecting piece 1228 . In the embodiment of the present application, the second driving member 1226 (coil) is electrically connected to the connecting piece 1228 through the lower spring 1220 for transmitting electrical signals to the second driving member 1226 (coil) to control the second driving member 1226 The magnitude and direction of the current (coil) controls the displacement of the lens 11 relative to the base plate 1211 . Exemplarily, the lower reed 1220 includes a first lower reed and a second lower reed. The first lower reed and the second lower reed are respectively electrically connected to the two second driving members 1226 (coils), so that the magnitudes of the currents of the two second driving members 1226 (coils) can be different.

Please refer to FIG. 15 and FIG. 16 together. FIG. 16 is a partial structural diagram of the camera module 10 shown in FIG. 15 . The plurality of suspension wires 124 include a first suspension wire 1241 , a second suspension wire 1242 , a third suspension wire 1243 and a fourth suspension wire 1244 . The first suspension wires 1241 and the second suspension wires 1242 are arranged symmetrically in the X-axis direction, the third suspension wires 1243 and the fourth suspension wires 1244 are symmetrically arranged in the X-axis direction, and the first suspension wires 1241 and the fourth suspension wires are arranged symmetrically in the X-axis direction. 1244 are symmetrically arranged in the Y-axis direction, and the second suspension wires 1242 and the third suspension wires 1243 are symmetrically arranged in the Y-axis direction; wherein, the X-axis direction is perpendicular to the Y-axis direction. Both the X-axis direction and the Y-axis direction are perpendicular to the Z-axis direction, and both intersect with the Z-axis direction. The Z-axis direction is the optical axis direction of the lens. It can be understood that the first suspension wires 1241 , the second suspension wires 1242 , the third suspension wires 1243 and the fourth suspension wires 1244 are respectively located at four diagonal positions of the base 1223 .

In the embodiment of the present application, the four suspension wires 124 are located at the four diagonal positions of the base 1223 respectively. During the movement of the movable portion 122 relative to the fixed portion 121, there are more avoidance spaces when the suspension wires 124 are inclined, which is beneficial to the camera model. Miniaturization of Group 10.

As shown in FIG. 16 , the plurality of upper reeds 1229 are connected to the plurality of suspension wires 124 in a one-to-one correspondence. And the plurality of upper springs 1229 are symmetrically arranged in the X-axis direction, and symmetrically arranged in the Y-axis direction. Exemplarily, the plurality of upper reeds 1229 include a first upper reed 1291 , a second upper reed 1292 , a third upper reed 1293 and a fourth upper reed 1294 . The first upper reed 1291 is connected to the first suspension wire 1241, the second upper reed 1292 is connected to the second suspension wire 1242, the third upper reed 1293 is connected to the third suspension wire 1243, and the fourth upper reed 1294 is connected to the fourth suspension wire 1244.

As shown in FIG. 16 , in some embodiments, the camera module 10 further includes a plurality of focusing leads 131 . The plurality of focusing leads 131 are focusing leads in the SMA motor 12 , and are all electrically connected to the connecting piece 1228 . The plurality of focusing leads 131 are electrically connected to the plurality of suspension wires 124 in a one-to-one correspondence. Wherein, each suspension wire 124 is made of conductive material, so that each suspension wire 124 is electrically connected to the corresponding focusing lead 131 . The plurality of upper reeds 1229 are made of conductive material and are electrically connected with the connecting pieces 1228 . Exemplarily, the straight portion in the upper spring plate 1229 is connected with the connecting plate 1228 to realize the electrical connection between the upper spring plate 1229 and the connecting plate 1228 .

In the embodiment of the present application, the connecting piece 1228 in the SMA motor 12 is electrically connected to the circuit board through a plurality of upper reeds 1229, a plurality of suspension wires 124 and a plurality of focusing leads 131, so as to realize a closed loop of the focusing circuit, The focusing speed of the camera module 10 is improved. It can be understood that, in the embodiment of the present application, the SMA motor 12 is a closed-loop motor, and is electrically connected to the connecting piece 1228 through a plurality of focusing wires 131 , a plurality of suspension wires 124 and a plurality of upper reeds 1229 , The signal control, response, feedback and control are realized, a feedback signal is generated, and the number of times the lens 11 moves back and forth is reduced, thereby improving the focusing speed of the camera module 10 and reducing the power consumption of the camera module 10 .

Exemplarily, the plurality of focusing leads 131 include a first focusing lead 1311 , a second focusing lead 1312 , a third focusing lead 1313 and a fourth focusing lead 1314 . The first focusing lead 1311 , the first suspension wire 1241 and the first upper spring 1291 are connected in sequence. The second focusing lead 1312 , the second suspension wire 1242 and the second upper spring 1292 are connected in sequence. The third focusing lead 1313, the third suspension wire 1243 and the third upper spring 1293 are connected in sequence. The fourth focusing lead 1314, the fourth suspension wire 1244 and the fourth upper reed 1294 are connected in sequence. And the first upper reed 1291 , the second upper reed 1292 , the third upper reed 1293 and the fourth upper reed 1294 are all electrically connected to the connecting piece 1228 .

In the embodiment of the present application, the plurality of suspension wires 124 and the plurality of upper reeds 1229 are made of conductive materials, and the electrical design of the closed-loop circuit of the focusing assembly 1222 is realized through the plurality of suspension wires 124 and the plurality of upper springs 1229, without the need for Adding extra leads simplifies the circuit design of the focusing assembly 1222 , which is beneficial to the miniaturization of the camera module 10 .

As shown in FIG. 16 , in some embodiments, the bottom plate 1211 is provided with a second escape opening 172 disposed opposite to the first escape opening 171 . The plurality of focusing leads 131 are disposed on the bottom plate 1211 and contact the plurality of suspension wires 124 in a one-to-one correspondence. A plurality of focusing leads 131 are led out from the second escape opening 172 . Exemplarily, a plurality of focusing leads 131 and anti-shake lead lines 126 located on the base plate 1211 are embedded in the base plate 1211 through etching and semiconductor deposition processes. The plurality of focusing leads 131 and the anti-shake lead 126 can also be formed as a flexible circuit board and fixed to the bottom plate 1211 by means of bonding. The present application does not limit the plurality of focusing leads 131 and the anti-shake lead 126 to be provided on the bottom plate. 1211 way.

In the embodiment of the present application, one end of the suspension wire 124 is fixed on the bottom plate 1211 , and a plurality of focusing leads 131 are arranged on the bottom plate 1211 , and the suspension wire 124 can directly contact the focusing lead 131 located on the bottom plate 1211 to realize electrical connection, which simplifies the suspension. The difficulty of electrically connecting the wire 124 to the focus lead 131 . In addition, the plurality of focusing leads 131 are integrated on the bottom plate 1211 , so as to avoid the disorder of the leads that would affect the arrangement of the components of the camera module 10 .

As shown in FIG. 16 , in some embodiments, the first suspension wires 1241 and the second suspension wires 1242 and the connecting sheet 1228 are located on the same side of the base 1223 , and the third suspension wires 1243 and the fourth suspension wires 1244 and the connecting sheet 1228 are located on the same side. Relative settings. The connecting piece 1228 is located on the side of the base 1223 . The plurality of camera modules 10 further include two closed-loop leads 132 . The two closed-loop leads 132 are electrically connected to the two suspension wires 124 (the third suspension wire 1243 and the fourth suspension wire 1244 ) remote from the connecting piece 1228 in a one-to-one correspondence. Exemplarily, one of the closed-loop leads 132 is connected between the third upper reed 1293 and the connecting piece 1228 , and the other closed-loop lead 132 is connected between the fourth upper reed 1294 and the connecting piece 1228 . The first suspension wire 1241 and the second suspension wire 1242 are close to the connecting piece 1228 and can be directly electrically connected to the connecting piece 1228 through the first upper spring piece 1291 and the second upper spring piece 1292 respectively.

In the embodiment of the present application, the four suspension wires 124 are respectively located at the four diagonal corners of the base 1223 , wherein the connected suspension wires 124 (the first suspension wires 1241 and the second suspension wires 1242 ) close to the connecting piece 1228 directly pass through The upper reed 1229 (the first upper reed 1291 and the second upper reed 1292 ) is connected to the connecting piece 1228 , and the two suspension wires 124 (the third suspension wire 1243 and the fourth suspension wire 1244 ) far from the connection piece 1228 pass through The two closed loop leads 132 are connected to the connecting piece 1228 . Conducive to the arrangement of the circuit.

Please refer to FIG. 15 and FIG. 16 together. In some embodiments, the two closed-loop leads 132 are located on the side of the movable plate 1221 away from the bottom plate 1211 . The base 1223 is fixed to the movable plate 1221 , that is, there is no gap between the base 1223 and the movable plate 1221 . Exemplarily, two closed-loop leads 132 are embedded on one side of the base 1223 close to the movable plate 1221 .

In the embodiment of the present application, the two closed-loop leads 132 are embedded in the base 1223 to avoid disorder of circuit distribution in the camera module 10 , thereby facilitating the arrangement of various structures of the camera module 10 . Exemplarily, the two closed-loop leads 132 are placed in the mold before the base 1223 is formed, so that the two closed-loop leads 132 and the base 1223 are integrally formed, which reduces process time and makes the space between the two closed-loop leads 132 and the base 1223 complex. Therefore, the two closed-loop leads 132 are prevented from interfering with the arrangement of the internal components of the camera module 10 , thereby facilitating the miniaturization of the camera module 10 . In other embodiments, the two closed-loop leads 132 can also be located outside or inside the base 1223 , which is not limited in the present application.

Wherein, the present application does not limit the camera module 10 in the anti-shake process, the SMA motor 12 drives the lens 11 or the image sensor 15 to translate. For example, in the first embodiment of the camera module 10 provided by the present application, the circuit board 14 and the image sensor are located under the SMA motor 12 , and the SMA motor 12 drives the lens 11 to move relative to the image sensor along a plane perpendicular to the optical axis of the lens 11 Describe as an example. In the second and third embodiments of the camera module provided later, the SMA motor can also drive the lens and the image sensor to move along a plane perpendicular to the optical axis of the lens. Alternatively, in Embodiment 4, Embodiment 5 and Embodiment 6 of the camera module provided later, the SMA motor drives the image sensor to move relative to the lens along a plane perpendicular to the optical axis of the lens.

Please refer to FIGS. 17 and 18 . FIG. 17 is a schematic structural diagram of the camera module 20 provided by the embodiment of the present application in the second embodiment; FIG. 18 is a partial structural schematic diagram of the camera module 20 shown in FIG. 17 . The camera module 20 shown in FIG. 18 does not include a casing compared to the camera module 20 shown in FIG. 17 .

The following mainly describes the differences between this embodiment and the previous embodiments, and most of the same contents of this embodiment and the previous embodiments will not be repeated. For example, the camera module 20 includes a lens 21 and an SMA motor 22 . The SMA motor 22 includes a fixed part 221 , a movable part 222 , an SMA wire 223 and a plurality of suspension wires 224 . When the SMA wire 223 is energized, it shrinks and drives the movable part 222 to translate relative to the fixed part 221 . The plurality of suspension wires 224 are used to support the movable portion 222 , so that the movable portion 222 can be suspended above the fixed portion 221 to avoid sliding friction when the movable portion 222 moves relative to the fixed portion 221 . Exemplarily, one end of each suspension wire 224 is straightly fixed to the fixed portion 221 , and the other end is straightly fixed to the movable portion 222 .

As shown in FIG. 17 , the camera module 20 includes a housing 24 , a rigid-flex board 25 and a flexible circuit board 26 . The housing 24 is fixed to the periphery of the bottom of the SMA motor 22, and is arranged around the outer side of the SMA motor 22. Both the flex-rigid board 25 and the flexible circuit board 26 are used to lead out the wiring inside the SMA motor 22 . The flexible circuit board 26 is a flexible circuit board that can be bent. The flexible circuit board 26 is led out from the conduction groove 240 of the casing 24 and is connected to the rigid-flex board 25 . The flex-rigid board 25 is used to electrically connect other components of the electronic device, such as a graphics processor. The flex-rigid board 25 is a circuit board that has the characteristics of both a printed circuit board (PCB) and a flexible printed circuit board (FPC).

In the embodiment of the present application, a part of the wiring inside the SMA motor 22 is led out through the flexible circuit board 26 , and the other part is led out through the flexible-rigid board 25 . For example, the wires for focusing in the SMA motor 22 are drawn out through the flexible circuit board 26 , and the wires for anti-shake in the SMA motor 22 are drawn out through the flexible-hard board 25 .

In other embodiments, the wiring inside the camera module 20 can also be led out only by the flex-rigid board 25 or the flexible circuit board 26 , which is not limited in the present application. For example, the anti-shake signal and the focusing signal of the camera module 20 are integrated in the flexible and hard combination board 25; or, the movable part 222 does not include a focusing component, and the camera module 20 can only achieve anti-shake, and the anti-shake signal is passed through the soft The rigid bonding board 25 is transmitted to the outside of the camera module 20 .

As shown in FIG. 18 , in some embodiments, the fixing portion 221 includes a base plate 2211 and a fixing plate 2212 fixed on the base plate 2211 . The movable part 222 is located above the fixed plate 2212 . The lens 21 is located inside the movable part 222 . One end of the SMA wire 223 is fixed to the fixing plate 2212 , and the other end is fixed to the movable portion 222 . The bottom plate 2211 is provided with a trace electrically connected to the SMA wire 223 . The rigid-flex board 25 is led out from the bottom plate 2211 to the outside of the casing 24 and is electrically connected to the SMA wire 223 . The rigid-flex board 25 includes a flexible board portion 251 and a rigid board portion 252 . One end of the flexible plate portion 251 is connected to the bottom plate 2211 , and the other end is connected to the hard plate portion 252 . The rigid board portion 252 is used for binding with other components in the electronic device, so as to ensure the stability of the connection between the rigid-flex board 25 and other components.

Please refer to FIG. 18 and FIG. 19 together. FIG. 19 is a schematic diagram of an exploded structure of the camera module 20 shown in FIG. 17 . The movable part 222 includes a circuit board 2221 , a bracket 2222 , a base 2223 and an upper spring 2224 . The bracket 2222 is fixed above the circuit board 2221 . The base 2223 is fixed above the bracket 2222 . The upper spring 2224 is fixed above the base 2223 . Exemplarily, part of the structure of the lens 21 is accommodated inside the base 2223 . One end of each suspension wire 224 is straightly fixed to the bottom plate 2211 , and the other end is straightly fixed to the upper spring 2224 . The upper reed 2224 has a certain elasticity. The structure of the upper spring plate 2224 in the figure is only an example, and is not limited in the present application. When the SMA motor 22 responds to the electrical signal, the circuit board 2221 , the bracket 2222 , the base 2223 and the upper spring 2224 in the movable portion 222 move together.

In the embodiment of the present application, one end of each suspension wire 224 is fixedly connected to the upper reed 2224. When the SMA motor 22 responds to the electrical signal and drives the movable part 222 to move along a plane perpendicular to the optical axis of the lens 21, the upper reed 2224 A buffer force can be provided for the movement of the movable part 222, so that the movement of the movable part 222 is more stable. At the same time, the SMA wire 223 has no driving force to the movable part 222 after the power is turned off, and the upper spring 2224 elastically drives the movable part 222 and the lens 21 to move back to the initial position, so that the movable part 222 and the lens 21 are reset. That is, the plurality of suspension wires 224 are fixedly connected to the upper reed 2224, which solves the problems of abnormal shaking of the movable part 222 and poor posture.

In some embodiments, the flexible circuit board 26 is led out from the circuit board 2221 to the outside of the housing 24 . One end of the flexible circuit board 26 is electrically connected to the rigid-flex board 25 , and the other end is electrically connected to the circuit board 2221 . The flexible circuit board 26 is provided with a deformation allowance. The flexible circuit board 26 is provided with a deformation allowance, and the length of the flexible circuit board 26 can be changed when the camera module 20 is in a working state.

In the embodiment of the present application, when the SMA wire 223 is energized and contracted to drive the circuit board 2221 in the movable portion 222 to move, the force of the circuit board 2221 on the flexible circuit board 26 pulls the flexible circuit board 26 to move, and the flexible circuit board 26 The deformation allowance can absorb the displacement generated by this force, and avoid the flexible circuit board 26 fixed at one end of the flexible-rigid board 25 from dragging the circuit board 26 and interfere with the movement of the movable part 222, which is beneficial to the camera module. 20 anti-shake.

Please continue to refer to FIG. 19 , in the second embodiment of the camera module 20 provided by the present application, the fixing plate 2212 is in the shape of a plate. The base 2223 is a hollow structure for accommodating at least part of the structure of the lens 21 . The movable part 222 further includes a movable plate 2225 , an image sensor 2226 and a filter 2227 . The movable plate 2225 is used to connect the SMA wire 223 . The image sensor 2226 is electrically connected to the circuit board 2221 . Exemplarily, the image sensor 2226 is fixed to the side of the circuit board 2221 facing the lens 21 . The bracket 2222 is used to fix the filter 2227 . One end of the flexible circuit board 26 is fixed to the circuit board 2221 and is led out to the outside of the casing 24 . One end of the rigid-flex board 25 is fixed to the bottom plate 2211 and drawn out from the bottom plate 2211 .

In some embodiments, the circuit board 2221 may be a rigid circuit board, and is provided with traces electrically connected to the flexible circuit board 26 , and the rigid circuit board may be fixedly connected to the movable board 2225 through various methods. At the same time, various components are mounted on the circuit board 2221, such as the image sensor 2226, which is electrically connected to the flexible circuit board 26 through a process, so that the signals obtained by the image sensor 2226 can pass through the flexible circuit board 26 and the flexible circuit board 26. The bonding plate 25 is transferred to other components. In some other embodiments, the circuit board 2221 can also be connected to the image sensor 2226 by placing a flex board and components on the substrate, and the flex board can be connected with the image sensor 2226 through a process, such as wire bonding, through a flexible circuit board. 26 lead out the signal line.

Those skilled in the art can design the circuit board 2221 , the flex-rigid board 25 and the flexible circuit board 26 according to actual needs. The present application does not limit the specific structures of the circuit board 2221 , the flex-rigid board 25 and the flexible circuit board 26 and forming process. Wherein, the flexible circuit board 26 and the circuit board 2221 can have an integrated structure, or they can be two different structures with the flexible circuit board 26 , which is not limited in the present application.

Please refer to FIG. 18 and FIG. 19 together. In some embodiments, the flexible circuit board 26 includes a first bending area 261 , a first flattening area 262 and a second bending area 263 which are connected in sequence. That is, the first flattening area 262 is connected between the first bending area 261 and the second bending area 263 . The first bending area 261 is connected between the circuit board 2221 and the first flat area 262 , and the second bending area 263 is connected between the first flat area 262 and the rigid circuit board 2221 .

Wherein, the extending direction of the first bending region 261 includes at least two directions. The extending direction of the first bending area 261 is the direction of the wiring arrangement in the first bending area 261 . The extension distance of the first bending region 261 is greater than the distance between two ends of the first bending region 261 which are arranged in opposite extending directions. The extending direction of the second bending region 263 includes at least two directions. The extending direction of the second bending area 263 is the direction in which the wires are arranged in the second bending area 263 . The extending distance of the second bending region 263 is greater than the distance between the two ends of the second bending region 263 which are arranged in opposite extending directions. Exemplarily, the extension direction of the first flat area 262 is unchanged. When the camera module 20 is in a non-working state, both the first bending area 261 and the second bending area 263 are in a bent state, and the first flattening area 262 is in a flat state.

In the embodiment of the present application, the flexible circuit board 26 has a deformation allowance by setting the first bending area 261 and the second bending area 263 . In other embodiments, the flexible circuit board 26 can also form a deformation allowance only by setting one bending area. Alternatively, the extending direction of the first flattening area 262 can also include at least two directions, and the first bending area 261 , the first flattening area 262 and the second bending area 263 are all provided with deformation allowances. Those skilled in the art can design a deformation allowance for the flexible circuit board 26 according to the actual requirements of the camera module 20 , which is not limited in the present application.

As shown in FIG. 19 , in some embodiments, the first flattening area 262 includes a first side edge 2621 and a second side edge 2622 which are arranged adjacently. Exemplarily, the first side 2621 and the second side 2622 are perpendicular to each other. In other embodiments, the angle formed by the first side edge 2621 and the second side edge 2622 can also be an acute angle or an obtuse angle, which is not limited in the present application. One end of the first bending region 261 is fixedly connected to the circuit board 2221 , and the other end is fixedly connected to the first side edge 2621 . One end of the second bending region 263 is fixedly connected to the second side edge 2622 , and the other end is used to be fixed to the rigid-flex board 25 .

In the embodiment of the present application, the first bending area 261 and the second bending area 263 are located in different directions of the first flattening area 262 respectively, and the flexible circuit board 26 has bending allowances in different directions, so that the SMA wire 223 is energized When the movable part 222 is moved in different directions by the contraction, the flexible circuit board 26 can absorb the force on the flexible circuit board 26 when the movable part 222 moves in different directions, which effectively prevents the flexible circuit board 26 from being involved in the movable part 222. Interfere with the anti-shake of the camera module 20 .

Please continue to refer to FIG. 19 , in some embodiments, the rigid-flex board 25 includes a third bending area 253 and a second flattening area 254 . The extending direction of the third bending region 253 includes at least two directions. The extending direction of the third bending region 253 is the direction in which the wires are arranged in the third bending region 253 . The extending distance of the third bending region 253 is greater than the distance between the two ends of the third bending region 253 which are arranged in opposite extending directions. When the camera module 20 is in an inactive state, the third bending region 253 is in a bent state. One end of the third bending area 253 is fixedly connected to the bottom plate 2211 , and the other end is connected to the second flattening area 254 . ie. The second flattening area 254 is connected to an end of the third bending area 253 away from the bottom plate 2211 . The flexible circuit board 26 can be fixed to the second flat area 254 .

In the embodiment of the present application, the rigid-flex board 25 is also provided with a third bending area 253, so that the length of the rigid-flex board 25 can be changed, and the rigid-flex board 25 of the camera module 20 can be prevented from being shaken during the anti-shake process. The movable part 222 is involved, and the movement of the movable part 222 is disturbed, so as to facilitate the anti-shake of the camera module 20 . Wherein, the third bending area 253 is located in the flexible plate portion of the flexible-rigid combination plate 25 . The second flattening area 254 may be located in the soft board part of the flex-rigid board 25, or may be located in the hard board part of the flex-rigid board 25, which is not limited in the present application.

Please refer to FIG. 20 . FIG. 20 is a schematic cross-sectional view of the structure shown in FIG. 17 along the line B-B. The casing 24 is fixed to the bottom plate 2211 . The fixing plate 2212 is mounted on the bottom plate 2211 . The movable portion 222 is suspended above the fixed plate 2212 . The movable plate 2225 in the movable part 222 faces the fixed part 221 . The circuit board 2221 and the image sensor 2226 are fixed above the movable board 2225D. The image sensor 2226 is located on the light-emitting side of the lens 21 and is electrically connected to the circuit board 2221 . The bracket 2222 is fixed above the circuit board 2221 . The base 2223 is fixed above the bracket 2222 . Exemplarily, the base 2223 and the bracket 2222 are fixedly connected through an adhesive layer, and at this time, the base 2223 and the bracket 2222 have different structures. In other embodiments, the base 2223 and the bracket 2222 can also be integrally formed to save the assembly time of the camera module 20 , which is not limited in the present application.

The lens 21 is located inside the base 2223 and connected to the base 2223 . Exemplarily, the lens carrier that carries the lens 21 is connected to the base 2223 through an elastic connector. It can be understood that the circuit board 2221 , the image sensor 2226 , the base 2223 and the lens 21 are all located above the movable plate 2225 and move relative to the fixed portion 221 together with the movable plate 2225 .

In the embodiment of the present application, the circuit board 2221, the image sensor 2226 and the base 2223 are all fixedly connected to the movable plate 2225, and the lens 21 is connected to the base 2223, and the SMA wire 223 drives the image sensor 2226 and the lens 21 together in response to the electrical signal, The relative fixed portion 221 moves along a plane perpendicular to the optical axis of the lens 21. At this time, the position of the light passing through the lens 21 projected on the image sensor 2226 remains unchanged, which is beneficial to improve the imaging resolution of the camera module 20, thereby improving the imaging performance. The clarity of the imaging of the module 20. At the same time, the position of the light projection image sensor 2226 passing through the lens 21 is fixed, so that the image sensor 2226 can be set with a smaller photosensitive surface to meet the imaging requirements, which is beneficial to reduce the volume of the image sensor 2226 .

As shown in FIG. 20 , in some embodiments, the circuit board 2221 is fixed on the side of the movable board 2225 away from the fixing portion 221 , and the image sensor 2226 is fixed on the side of the circuit board 2221 away from the movable board 2225 , that is, the image sensor 2226 , The circuit board 2221 and the movable board 2225 are stacked in sequence. In this embodiment, the image sensor 2226 is fixed on the surface of the circuit board 2221 , which facilitates the design of electrical connection between the image sensor 2226 and the circuit board 2221 , and helps to reduce the cost of the camera module 20 . Exemplarily, the circuit board 2221 is a rigid circuit board 2221 to ensure the stability of the image sensor 2226 being fixed on the circuit board 2221 .

In other embodiments, the image sensor 2226 can also be at least partially embedded in the circuit board 2221, which is not limited in this application. For example, the circuit board 2221 is provided with an accommodating groove, and the image sensor 2226 is accommodated in the accommodating groove. The thickness of the image sensor 2226 and the circuit board 2221 are spatially multiplexed, which is beneficial to reduce the thickness of the camera module 20 .

Please continue to refer to FIG. 20 , the filter 2227 is fixed on the bracket 2222 , and is disposed opposite to the image sensor 2226 and located on the light-emitting side of the lens 21 . Exemplarily, the bracket 2222 is provided with a step structure for fixing the filter 2227, so as to fix the filter 2227 firmly. The lens 21 , the filter 2227 , the image sensor 2226 and the movable plate 2225 are stacked in sequence along the optical axis direction of the lens 21 .

In the embodiment of the present application, the light passing through the lens 21 from the outside world is irradiated on the image sensor 2226 after passing through the filter 2227, and the filter 2227 can filter the stray light in the light passing through the lens 21, so that the image captured by the camera module 20 is The photos are more realistic, thereby improving the quality of the camera module 20 .

In some embodiments, the movable portion 222 also includes a focusing assembly 2228 . Exemplarily, the focusing assembly 2228 is located inside the base 2223 . The focusing assembly 2228 is used to drive the lens 21 to move along the optical axis of the lens 21 to change the distance between the lens 21 and the image sensor 2226 , so as to realize the focusing of the camera module 20 . The focusing assembly 2228 in FIG. 20 is only an example, and the structure of the focusing assembly 2228 can be referred to the related description of the aforementioned camera module 20 in the first embodiment, which is not repeated in this application. For example, the focusing assembly 2228 includes a first driving member and a second driving member. The first driving member and the second driving member cooperate with each other through magnetic force to drive the lens 21 to move along the optical axis direction of the lens 21 . In other embodiments, the movable part 222 can also not include the focusing assembly 2228, which is not limited in the present application.

Please refer to FIG. 18 and FIG. 20 together, one end of the suspension wire 224 is fixed to the bottom plate 2211 , and the other end is fixed to the upper spring 2224 . The extending direction of the suspension wire 224 is the same as the optical axis direction of the lens 21 . The upper spring 2224 is fixed to the side of the base 2223 away from the bottom plate 2211 . The suspension wire 224 is supported between the upper spring 2224 and the bottom plate 2211 to support the movable portion 222 on the side of the fixed portion 221 away from the bottom plate 2211 . Exemplarily, the upper reed 2224 is spaced apart from the housing 24 to provide an escape space when the movable portion 222 drives the upper reed 2224 to move relative to the fixed portion 221 , so as to prevent the housing 24 from interfering with the movement of the movable portion 222 .

In the embodiment of the present application, the plurality of suspension wires 224 support the movable portion 222 to prevent the plurality of SMA wires 223 from bearing the weight of the movable portion 222 and thus affect the performance of the SMA wires 223 . In addition, the elastic upper reed 2224 is connected between the suspension wire 224 and the base 2223, and the upper reed 2224 can provide a buffer force for the movement of the movable part 222, so that the movement of the movable part 222 is more stable. At the same time, after the SMA wire 223 is powered off, there is no driving force for the movable part 222, and the upper reed 2224 can drive the movable part 222 and the lens 21 to move back to the initial position, so that the movable part 222 and the lens 21 are reset, which solves the problem of the movable part 222. Abnormal shaking and poor posture.

Please continue to refer to FIG. 21 , which is a partial structural diagram of the cross-sectional view shown in FIG. 20 . The movable plate 2225 in the movable portion 222 faces the fixed plate 2212 and is spaced from the fixed plate 2212 . As shown in FIG. 21 , the movable portion 222 faces the first surface 2220 of the fixed plate 2212 and does not contact the second surface 2210 of the fixed plate 2212 and faces the movable plate 2225 . It can be understood that one end of the suspension wire 224 is straightly fixed to the fixed plate 2212 , and the other end is straightly fixed to the movable portion 222 , so that the movable portion 222 is suspended above the fixed plate 2212 .

In the embodiment of the present application, the plurality of suspension wires 224 are suspended to support the movable part 222 above the fixed plate 2212 , and there is no need to provide an additional support for supporting the movable part 222 between the fixed plate 2212 and the movable plate 2225 , so that the movable part 222 can be moved. When the part 222 moves relative to the fixed part 221 along a plane perpendicular to the optical axis of the lens 21, there is no friction between the movable part 222 and the fixed part 221, which avoids the driving algorithm of the camera module 20 when the electronic device is in different postures difficulty caused.

Please continue to refer to FIG. 22 , which is a top view of a partial structure of the camera module 20 shown in FIG. 21 . The plurality of suspension wires 224 are symmetrically arranged in the X-axis direction and symmetrically arranged in the Y-axis direction. The X-axis direction is perpendicular to and intersects the Y-axis direction. The intersection of the X-axis direction and the Y-axis direction passes through the direction of the optical axis 210 of the lens. In the embodiment of the present application, a plurality of suspension wires 224 are symmetrically distributed on the periphery of the movable portion 222 to support the movable portion 222 in a balanced and stable manner.

Exemplarily, the movable plate 2225 is substantially rectangular, the number of the suspension wires 224 is four, and the four suspension wires 224 are distributed at four diagonal corners of the movable portion 222 . As shown in FIG. 22 , the plurality of suspension wires 224 include a first suspension wire 2241 , a second suspension wire 2242 , a third suspension wire 2243 and a fourth suspension wire 2244 . The first suspension wires 2241 and the second suspension wires 2242 are arranged symmetrically in the X-axis direction, the third suspension wires 2243 and the fourth suspension wires 2244 are symmetrically arranged in the X-axis direction, and the first suspension wires 2241 and the fourth suspension wires are arranged symmetrically in the X-axis direction. 2244 are symmetrically arranged in the Y-axis direction, and the second suspension wires 2242 and the third suspension wires 2243 are symmetrically arranged in the Y-axis direction. In other embodiments, the four suspension wires 224 can also be symmetrically distributed at other positions of the movable portion 222 , such as four sides of the movable portion 222 , which is not limited in the present application.

In some embodiments, the number of SMA wires 223 is four. The four SMA wires 223 are rotationally symmetrical about the optical axis 210 of the lens. For the connection relationship between the SMA wire 223 and the fixed portion 221 and the movable plate 2225, reference may be made to the description of the SMA wire in the foregoing embodiment, and details are not repeated here.

In the embodiment of the present application, the camera module 20 is provided with a plurality of suspension wires 224 supporting the movable portion 222 and arranged symmetrically. When the camera module 20 is in different postures, the elastic force of each suspension wire 224 is the same, which reduces the driving algorithm. control difficulty.

Please refer to FIG. 23 and FIG. 24 together. FIG. 23 is a partial structural schematic diagram of the camera module 20 provided by the embodiment of the present application in the third embodiment; FIG. 24 is a cross-sectional schematic diagram of the structure shown in FIG. 23 . The camera module 20 shown in FIG. 23 does not include a casing.

Most of the contents of the third embodiment that are the same as those of the second embodiment will not be repeated. For example, the camera module 20 includes a lens 21 and an SMA motor 22 . The SMA motor 22 includes a fixed part 221 , a movable part 222 , an SMA wire 223 and a plurality of suspension wires 224 . When the SMA wire 223 is energized, it shrinks and drives the movable part 222 to translate relative to the fixed part 221 . The plurality of suspension wires 224 are used to support the movable portion 222 , so that the movable portion 222 is suspended above the fixed portion 221 to avoid sliding friction when the movable portion 222 moves relative to the fixed portion 221 . The movable part 222 includes a circuit board 2221 , an image sensor 2226 and a lens carrier for fixing the lens 21 . Exemplarily, one end of each suspension wire 224 is fixed to the upper spring 2224 in the movable portion 222 .

As shown in FIG. 23 , in some embodiments, the camera module 20 further includes a rigid-flex board 25 . The rigid-flex board 25 is drawn out from the bottom plate 2211 in the fixing portion 221 to the outside of the casing. One end of the rigid-flex board 25 is used to electrically connect other components in the electronic device to transmit electrical signals inside the camera module 20 . The flex-rigid board 25 is not only electrically connected to the SMA wire, but also electrically connected to the circuit in the movable part 222 . The wires inside the SMA motor 22 are all electrically connected to other components in the electronic device through the flex-rigid board.

In the embodiment of the present application, the lines in the fixed part 221 and the movable part 222 of the SMA motor 22 are both led out to the outside of the SMA motor 22 (the casing) through the flexible and rigid bonding plate 25 , reducing the number of circuit boards leading out from the inside of the SMA motor 22 The number of , is beneficial to the miniaturization of the camera module 20 .

As shown in FIG. 24 , the movable part 222 further includes a bracket 2222 , a base 2223 , a movable plate 2225 , a filter 2227 and a focusing assembly 2228 . The movable plate 2225 faces the fixed portion 221 . The circuit board 2221 is fixed on the side of the movable plate 2225 away from the fixing portion 221 , and the image sensor 2226 is mounted on the circuit board 2221 and is electrically connected to the circuit board 2221 . The bracket 2222 is mounted on the circuit board 2221 and is used to fix the filter 2227 opposite to the image sensor 2226 . The base 2223 is fixed to the bracket 2222 and is used for carrying the focusing assembly 2228 . The focusing assembly 2228 drives the lens 21 to move along the optical axis of the lens 21 in response to the electrical signal, so as to realize focusing.

In the third embodiment of the present application, the lens 21 can not only move along a plane perpendicular to the optical axis of the lens 21 under the action of the SMA wire 223 to realize anti-shake of the camera module 20, but also under the action of the focusing assembly 2228 The relative fixing portion 221 moves along the optical axis direction of the lens 21 to realize the focus adjustment of the camera module 20 , so that the camera module 20 has both anti-shake and focus adjustment, and the imaging quality of the camera module 20 is improved. In other embodiments, the SMA motor 22 can also only drive the lens 21 to move along a plane perpendicular to the optical axis of the lens 21 , which is not limited in the present application.

Please continue to refer to FIG. 25 and FIG. 26 , FIG. 25 is an enlarged schematic structural diagram of part a shown in FIG. 24 ; FIG. 26 is a partial structural schematic diagram of the camera module shown in FIG. 23 .

The camera module 20 also includes a flexible circuit board 26 . One end of the flexible circuit board 26 is fixed below the circuit board 2221 , and the other end is fixed to the bottom plate 2211 . The flexible circuit board 26 is located inside the casing, and is electrically connected to the circuit board 2221 and the rigid-flex board 25 . The flexible circuit board 26 is used to electrically connect the electrical signals in the movable part 222 with other components in the electronic device. Exemplarily, the lines in the focusing component 2228 and the image sensor 2226 are converged on the circuit board 2221 , and are electrically connected to the rigid-flex board 25 through the flexible circuit board 26 .

The circuit board 2221 is a rigid circuit board, and the rigid circuit board can be fixedly connected to the movable board 2225 through various methods. At the same time, various components are mounted on the circuit board 2221, such as an image sensor 2226, which is electrically connected to the flexible circuit board 26 through a process, so that the signals obtained by the image sensor 2226 can pass through the flexible circuit board 26 and the flexible and hard combination. The board 25 is transmitted to other components in the electronic device.

In the embodiment of the present application, the flexible circuit board 26 is provided with a deformation allowance, which can absorb the traction force on the flexible circuit board 26 when the SMA wire 223 is energized and contracted, and avoids the flexible circuit board fixed on one end of the flexible-rigid board 25 . 26 involves the circuit board 26 and interferes with the movement of the movable part 222 , thereby facilitating the anti-shake of the camera module 20 . At the same time, the flexible circuit board 26 is located inside the SMA motor 22, and the electrical signals inside the camera module 20 are electrically connected with other components of the electronic device through the rigid circuit board, so as to avoid the outer side of the casing being configured to transmit the movable part. The flexible circuit board for electrical signals in 222 eliminates the need for a deformation space for the flexible circuit board to move with the movable part 222 inside the electronic device, reduces the internal space of the electronic device occupied by the camera module 20, and is beneficial to the miniaturization of the electronic device.

In some embodiments, the SMA motor 22 is provided with an escape space 220 passing through the fixed plate 2212 and the movable plate 2225 . One end of the flexible circuit board 26 is fixedly connected to the bottom plate 2211 , and is connected to the circuit board 2221 through the fixed board 2212 and the movable board 2225 through the avoidance space 220 . Wherein, the bottom plate 2211 is provided with a circuit, and is electrically connected to the flexible circuit board 26 and the flexible-rigid combination board 25 respectively through a process. One end of the flexible circuit board 26 is fixedly connected to the circuit board 2221 , and the other end is fixedly connected to the circuit in the bottom plate 2211 , so that the flexible circuit board 26 is electrically connected to the circuit board 2221 and the rigid-flex board 25 .

In the embodiment of the present application, the SMA motor 22 is provided with an avoidance space 220 penetrating the fixed plate 2212 and the movable plate 2225. The avoidance space 220 not only allows the flexible circuit board to pass through the fixed plate 2212 and the movable plate 2225, so as to realize the connection between the circuit board 2221 and the flexible plate 2225. The electrical connection of the rigid board 25 can provide a deformation space for the flexible circuit board 26 to deform under the action of the movable part 221, so that the space of the flexible circuit board is multiplexed with the internal space in the SMA motor 22, which is beneficial to Miniaturization of the camera module 20 .

Those skilled in the art can design the circuit board 2221 , the flex-rigid board 25 and the flexible circuit board 26 according to actual needs. The present application does not limit the specific structures of the circuit board 2221 , the flex-rigid board 25 and the flexible circuit board 26 and forming process.

Please refer to FIG. 27 . FIG. 27 is a schematic structural diagram of the camera module 30 provided in the embodiment of the present application in the fourth embodiment. The following mainly describes the differences between this embodiment and the previous embodiments, and most of the same contents of this embodiment and the previous embodiments will not be repeated. For example, an SMA motor includes a fixed portion, a movable portion, an SMA wire, and a plurality of suspension wires. When the SMA wire is energized, it shrinks, which drives the movable part to translate relative to the fixed part. The plurality of suspension wires are used to suspend the movable part above the fixed part to avoid sliding friction when the movable part moves relative to the fixed part. Wherein, in the fourth embodiment of the present application, the movable part includes an image sensor, and is arranged spaced apart from the lens. When the SMA motor responds to the electrical signal, it drives the image sensor to move relative to the lens along a plane perpendicular to the optical axis of the lens, so as to realize anti-shake of the camera module.

As shown in FIG. 27 , the camera module 30 includes a bottom plate 3511 , a housing 32 , a lens 33 and a second circuit board 34 . The bottom plate 3511 is used for fixing and connecting other structures inside the electronic device, so as to firmly fix the camera module 30 inside the electronic device. The casing 32 is mounted on the bottom plate 3511 , and the casing 32 is fixed relative to the bottom plate 3511 . The housing 32 is used to protect the structures located inside the housing 32 . Illustratively, the main part of the lens 33 is accommodated inside the housing 32 . Part of the structure of the second circuit board 34 is located outside the casing 32 , and is used for connecting with other components inside the electronic device to transmit electrical signals inside the camera module 30 .

Please refer to FIG. 28 . FIG. 28 is a partial structural diagram of the camera module 30 shown in FIG. 27 . The camera module 30 further includes an SMA motor 300 . The lens 33 is located inside the SMA motor 300 . The SMA motor 300 can be used to realize anti-shake and focus adjustment of the camera module. Illustratively, the SMA motor 300 includes an SMA assembly 35 , a focusing assembly 36 , a bracket 37 and a plurality of suspension wires 38 . The SMA component 35 is located on the light-emitting side of the lens 33 . The bracket 37 is located above the SMA component 35 and is spaced apart from the SMA component 35 . The lens 33 is located inside the bracket 37 . The focusing assembly 36 is mounted on the bracket 37 . A plurality of suspension wires 38 are symmetrically located on the periphery of the bracket 37 , and one end of each suspension wire 38 is straightly fixed to the bracket 37 , and the other end is straightly fixed to the SMA component 35 .

In the embodiment of the present application, the SMA component 35 is used to realize the anti-shake function of the camera module 30 , and the focusing component 36 is used to realize the focus adjustment of the camera module 30 , that is, the focusing function and the anti-shake function in the camera module 30 Driven by different structures, it is beneficial to realize the large-angle anti-shake of the camera module 30 . Exemplarily, the electrical signals of the focusing assembly 36 and the SMA assembly 35 are finally transmitted through the second circuit board 34 to other components of the electronic device.

Please continue to refer to FIG. 29 . FIG. 29 is a schematic diagram of a partially exploded structure of the camera module 30 shown in FIG. 27 . The SMA assembly 35 includes a fixed part 351 , a movable part 352 and an SMA wire 353 . The SMA wire 353 is used to connect the fixed part 351 and the movable part 352 . The number of the SMA wires 353 is plural. The SMA wire 353 contracts when energized. The material of the SMA wire 353 may refer to the description of the SMA wire 353 in the foregoing embodiment. Exemplarily, the fixing part 351 includes a bottom plate 3511 and a fixing plate 3512 . The movable part 352 includes a movable board 354 , a first circuit board 355 and an image sensor 356 . The movable plate 354 is used to connect the SMA wire 353 . Image sensor 356 is a device that converts optical images into electrical signals. The first circuit board 355 is electrically connected to the image sensor 356 to transmit the electrical signal of the image sensor 356 .

Exemplarily, the focusing assembly 36 includes a first driving member 361 , a second driving member 362 , a lens carrier 363 and a reed 364 . The lens carrier 363 is used to carry the lens 33 , and the reed 364 is used to connect the lens 33 and the bracket 37 . The bracket 37 includes a bracket body 371 and a top plate 372 . The bracket body 371 can be used to carry the first driving member 361 or the second driving member 362 . The top plate 372 can be fixed on the inner wall of the casing 32 so that the bracket 37 is fixed relative to the bottom plate 3511 .

Please refer to FIG. 30 and FIG. 31 together. FIG. 30 is a top view of the camera module 30 shown in FIG. 27 ; FIG. 31 is a schematic cross-sectional view of the structure shown in FIG. 30 along the line C-C. In some embodiments, the bracket 37 is suspended above the movable portion 352 and is fixedly connected to the fixed portion 351 . Exemplarily, the top plate 372 in the bracket 37 is fixed to the inner wall of the casing 32 , and the casing 32 is fixed to the periphery of the bottom plate 3511 , so that the bracket 37 is fixed relative to the fixing portion 351 . The bracket body 371 is fixed below the top plate 372 , and the bracket body 371 is spaced apart from the movable portion 352 , so that the bracket 37 is suspended above the movable portion 352 .

The bracket body 371 faces the first circuit board 355 in the movable portion 352 and is spaced from the first circuit board 355 . The lens carrier 363 is located inside the bracket 37 . The lens 33 is fixed to the inner side of the lens carrier 363 . The image sensor 356 in the movable part 352 is located on the light-emitting side of the lens 33 . The light from the outside world passes through the lens 33 and then falls on the photosensitive surface of the image sensor 356 to form an image on the image sensor 356 .

In the embodiment of the present application, the bracket body 371 is fixedly connected to the top plate 372, and the bracket body 371 and the movable part 352 are arranged at intervals. When the SMA wire 353 responds to the electrical signal, only the movable part 352 (the movable plate 354, the first circuit board 355 is driven) and the image sensor 356) move along a plane perpendicular to the optical axis of the lens 33 to achieve anti-shake, without driving the lens 33, the lens carrier 363 and the bracket 37 to move, the load of the movable part 352 is small, which is beneficial to the camera module 30. Anti-shake power consumption. At the same time, due to the concentrating effect of the lens 33 on light, compared with the traditional solution of moving the lens 33 for anti-shake, the SMA motor-driven image sensor 356 of this embodiment needs to compensate the translation distance (ie, travel) required for optical path compensation. It is shorter, which further reduces the power consumption of the camera module 30 .

In other embodiments, the bracket body 371 can also be spaced apart from the top plate 372, and the bracket body 371 is fixed to the movable portion 352, so that when the SMA wire 353 responds to the electrical signal, the image sensor 356 and the lens 33 are driven to move relative to the fixed portion 351, to achieve anti-shake. The present application does not limit, when the SMA wire 353 responds to the electrical signal, it drives the image sensor 356 to move, or drives the lens 33 to move, or drives the image sensor 356 to move together with the lens 33 .

Wherein, in the embodiment of the present application, the bracket body 371 and the top plate 372 are of different structures, which facilitates the installation of the focusing assembly on the bracket body 371 . Exemplarily, the top plate 372 can be fixed to the bracket body 371 through fasteners, and can also be fixed to the bracket body 371 through an adhesive layer, which is not limited in the present application. In other embodiments, the top plate 372 and the bracket body 371 can also have an integrated structure, which is not limited in the present application.

As shown in FIG. 31 , in some embodiments, the first circuit board 355 is fixed above the movable board 354 . The image sensor 356 is mounted on the first circuit board 355 . Exemplarily, the image sensor 356 is fixed above the first circuit board 355 . It can be understood that the image sensor 356 is indirectly fixed to the movable plate 354 through the first circuit board 355 .

In the embodiment of the present application, the image sensor 356 is fixed to the side of the movable board 354 facing the lens 33 through the first circuit board 355, which not only makes the image sensor 356 fixed relative to the movable board 354, but also facilitates the connection between the image sensor 356 and the first circuit board. 355 electrical connection design. In other embodiments, at least part of the structure of the image sensor 356 can also be embedded in the first circuit board 355 to reduce the thickness of the camera module 30 . The present application does not limit the installation method of the image sensor 356 and the circuit board.

In some embodiments, the camera module 30 further includes a filter 39 located between the lens 33 and the image sensor 356 . The filter 39 is disposed opposite to the image sensor 356 . The filter 39 can filter the stray light in the light passing through the lens 33 , so that the photos taken by the camera module 30 are more realistic, thereby improving the quality of the camera module 30 . Exemplarily, the filter 39 is fixed on the bottom of the bracket 37 , and there is no need to add an additional base for fixing the filter 39 , which is beneficial to the miniaturization of the camera module 30 .

Please refer to FIG. 32 and FIG. 33 together. FIG. 32 is an enlarged schematic structural diagram of part b shown in FIG. 31 ; FIG. 33 is a partial structural schematic diagram of the camera module 30 shown in FIG. 28 . The movable part 352 is suspended above the fixed part 351 . The movable plate 354 in the movable part 352 faces the fixed part 351 and is spaced from the fixed part 351 . One end of each suspension wire 38 is straightly fixed to the movable portion 352 , and the other end is straightly fixed to the bracket 37 . A plurality of suspension wires 38 are symmetrically arranged on the periphery of the bracket 37 . Exemplarily, a plurality of suspension wires 38 are fixed to the periphery of the top plate 371 and are located at the periphery of the bracket body 371 . It can be understood that the plurality of suspension wires 38 suspend the movable portion 352 so that the movable portion 352 and the fixed portion 351 can be arranged at intervals.

In the embodiment of the present application, the movable portion 352 and the fixed portion 351 are arranged at intervals, and there is no need to additionally provide a support member between the fixed plate 3512 and the movable plate 354 for supporting the movable portion 352, and the movable portion 352 is perpendicular to the lens relative to the fixed portion 351 along the When the plane of the optical axis of 33 moves, there is no friction between the movable part 352 and the fixed part 351 , which avoids the difficulty caused by the driving algorithm of the camera module 30 when the electronic device is in different postures.

In some embodiments, one end of each SMA wire 353 is fixed to the fixing portion 351 , and the other end is fixed to the movable plate 354 . The SMA wires 353 are energized and heated to shrink, and the combined force of the multiple SMA wires 353 drives the movable plate 354 , the first circuit board 355 and the image sensor 356 to move relative to the fixed portion 351 along a plane perpendicular to the optical axis of the lens 33 . Both the first circuit board 355 and the image sensor 356 are arranged spaced apart from the bracket 37 . That is, the movable portion 352 is spaced apart from the bracket 37 .

In the embodiment of the present application, the movable part 352 and the bracket 37 are arranged at intervals, the SMA wire 353 is heated to shrink when energized, and the common force of the multiple SMA wires 353 only needs to drive the movable plate 354 , the first circuit board 355 and the image sensor 356 to move , there is no need to drive the heavy lens 33 , which is beneficial to reduce the anti-shake power consumption of the camera module 30 .

Please continue to refer to FIG. 32 and FIG. 33 , the movable portion 352 is suspended above the fixed portion 351 , and the bracket 37 is suspended above the movable portion 352 . The plurality of suspension wires 38 suspend the movable portion 352 so that the movable portion 352 is suspended above the fixed portion 351 . Exemplarily, one end of each suspension wire 38 is fixed to the first circuit board 355 , and the other end is fixed to the top plate 372 . The top plate 372 is provided with a plurality of limiting portions 3720 for fixing the plurality of suspension wires 38 . The plurality of limiting portions 3720 are in one-to-one correspondence with the plurality of suspension wires 38 .

In the embodiment of the present application, after the SMA wire 353 is powered off, there is no force on the movable portion 352, and the plurality of suspension wires 38 support the movable portion 352. After the SMA wire 353 is powered off, the movable portion 352 can still be spaced from the fixed portion 351, so that The initial positions of the movable part 352 relative to the fixed part 351 are the same.

Wherein, in the embodiment of the present application, the movable part 352 only includes the movable plate 354, the circuit board and the image sensor 356, and the movable part 352 has a relatively small weight. When the SMA wire 353 is powered off, the movable part 352 can pass the suspension wire 38 itself. The force returns to the original position without additionally setting the reed 364 for reset. In other embodiments, one end of the suspension wire 38 close to the bracket 37 can be connected to the reed, and the movable portion 352 is reset by the reed 364 . The present application does not limit the way in which the movable portion 352 is reset.

At the same time, one end of each suspension wire 38 is fixed to the movable portion 352, and the other end is fixed to the top plate 372 away from the side of the bracket 37 away from the movable portion 352. Each suspension wire 38 is perpendicular to the movable portion 352. The force of the wires 38 is the same, so that the plurality of suspension wires 38 support the movable part 352 stably.

28 and 33 , in some embodiments, the fixing portion 351 includes a plurality of control leads. The plurality of control leads are connected to the plurality of SMA wires 353 in a one-to-one correspondence, and are used to control the magnitude of the current flowing into each of the SMA wires 353 to control the offset of the movable plate 354 relative to the fixed portion 351 . Exemplarily, the plurality of control leads are fixed to the second circuit board 34 to avoid the movement of the first circuit board 355 from involving the control leads, thereby ensuring the stability of the electrical connection between the control leads and the second circuit board 34 .

Please continue to refer to FIG. 33 and FIG. 34 . FIG. 34 is another partial structural diagram of the camera module 30 shown in FIG. 28 . In some embodiments, the second circuit board 34 includes a first portion 341 and a second portion 342 connected to the first portion 341 . The first portion 341 is fixed to the fixing portion 351 and is spaced apart from the first circuit board 355 . Exemplarily, the first part 341 surrounds the first circuit board 355 , that is, the first circuit board 355 is located inside the first part 341 . The second portion 342 is located on a side of the first portion 341 away from the first circuit board 355 and extends to the outside of the bottom plate 3511 . 33 and 34 , the first part 341 is located inside the casing 32 , and the second part 342 is located outside the casing 32 . Exemplarily, the first part 341 is located inside the housing 32 to facilitate electrical connection with the SMA wire.

In the embodiment of the present application, the second circuit board 34 includes a first portion 341 and a second portion 342 extending from the first portion 341 to the outside of the housing. The first portion 341 can be used to electrically connect the lines in the focusing assembly, and the second portion 342 is used to electrically connect the camera module with other components in the electronic device.

In some embodiments, the camera module 30 further includes a flexible connector 310 . The flexible connector 310 is electrically connected between the first circuit board 355 and the first part 341 . Wherein, the flexible connector 310 can be bent.

In the embodiment of the present application, the first circuit board 355 is connected to the second circuit board 34 through the flexible connector 310 to realize the electrical connection between the first circuit board 355 and the components outside the electronic device. During the anti-shake process of the camera module 30, the SMA wire 353 drives the first circuit board 355 to move with the corresponding electrical signal, the flexible connecting member 310 can be bent, and the flexible connecting member 310 can absorb the movement of the first circuit board 355 and avoid the second circuit board 355. The circuit board 34 involves the first circuit board 355 to affect the anti-shake of the camera module 30 .

In some embodiments, one end of the second portion 342 is fixed to the bottom plate 3511 , and the other end is used for fixedly connecting to other components in the electronic device. Exemplarily, the second part 342 is a rigid circuit board. The leading ends of the plurality of SMA wires 353 are fixed to the second circuit board 34 . In the embodiment of the present application, the second circuit board 34 is fixedly connected to the bottom plate 3511 , so that the lead ends of the plurality of SMA wires 353 can be stably fixed to the second circuit board 34 and prevent the second circuit board 34 from being on the first circuit board 355 . It moves under the drive of the SMA wires 353 and affects the stability of the lead ends of the plurality of SMA wires 353 and the second circuit board 34 .

In the embodiment of the present application, the flexible connecting member 310 has different structures from the first circuit board 355 and the second circuit board 34 . In other embodiments, the flexible connector 310 can also be integrated with the first circuit board 355, which is not limited in the present application. For example, the first circuit board 355 includes a substrate and a flexible circuit board located on the substrate, and the flexible circuit board and the flexible connector 310 are integrally formed.

As shown in FIG. 34 , in some embodiments, the first part 341 is a hollow structure, and the first circuit board 355 is located inside the first part 341 . The number of the flexible connecting members 310 is plural. One end of each flexible connector 310 is fixed to the first circuit board 355 , and the other end is fixed to the first part 341 . The plurality of traces in the first circuit board 355 are respectively transmitted to the second circuit board 34 through the plurality of flexible connectors 310 . The plurality of flexible connectors 310 are distributed around the first circuit board 355 , and the gap between the first circuit board 355 and the first part 341 is fully utilized, which is beneficial to the miniaturization of the camera module 30 .

In the embodiment of the present application, the wires in the first circuit board 355 are drawn out through a plurality of flexible connectors 310 , and each flexible connector 310 shares a part of the wires in the first circuit board 355 , so that each flexible connector 310 The width of the first circuit board 355 is thinner, which reduces the width of the gap between the first circuit board 355 and the first part 341 , thereby facilitating the miniaturization of the camera module 30 . In addition, on the basis of a certain length of the flexible connecting member 310, the width of the flexible connecting member 310 is relatively thin, which is beneficial to improve the bending performance of the flexible connecting member 310, thereby preventing the flexible connecting member 310 from interfering with the movement of the first circuit board 355. . It can be understood that when a single flexible connector 310 shares the traces drawn from the first circuit board 355, the flexible connector 310 needs a wider width to lead out all the traces in the first circuit board 355. At this time, the first circuit The plate 355 and the first portion 341 require a wider gap.

Please continue to refer to FIG. 35 , which is a top view of the structure shown in FIG. 34 . The plurality of flexible connectors 310 are symmetrically distributed on the first circuit board 355 . Exemplarily, the first circuit board 355 is substantially rectangular. The plurality of flexible connectors 310 are symmetrically arranged in the X-axis direction and symmetrically arranged in the Y-axis direction. The X-axis direction is perpendicular to and intersects the Y-axis direction. The intersection of the X-axis direction and the Y-axis direction passes through the direction of the optical axis 330 of the lens. The plurality of flexible connectors 310 can be arranged centrally symmetrically or axially symmetrically, which is not limited in the present application. As shown in FIG. 35 , the number of flexible connecting members 310 is four, and the four flexible connecting members 310 are centrally symmetric. In other embodiments, the number of flexible connectors 310 may also be 2, 3, 6, or 8, which is not limited in this application. The shape of the first circuit board 355 is not limited in the present application.

In the embodiment of the present application, the plurality of flexible connectors 310 are symmetrically arranged, and when the SMA wire 353 shrinks and drives the first circuit board 355 to move, the force on each flexible connector 310 is balanced, so as to avoid the stress on each flexible connector 310 being uneven. Balance and interfere with the movement of the movable part 352 , thereby improving the anti-shake performance of the camera module 30 .

Please continue to refer to FIG. 36 . FIG. 36 is a schematic structural diagram of the camera module 30 shown in FIG. 28 from another angle. In some embodiments, the bracket body 371 is provided with a lead-out terminal 3710 fixed to the first portion 341 . The lead-out terminal 3710 is used to lead out the circuit in the focusing assembly 36 and is electrically connected to the second circuit board 34 . Exemplarily, the leads in the focusing assembly 36 are embedded in the bracket body 371 , which not only prevents the lead wires from being arranged chaotically and affects the assembly of the camera module 30 , but also facilitates the miniaturization of the camera module 30 .

In the embodiment of the present application, the first part 341 is fixed to the bottom plate 3511 , and the lead-out terminal 3710 is fixed to the first part 341 , so that the lead-out terminal 3710 is fixedly connected to the bottom plate 3511 . The movement of the circuit board 355 pulls the lead-out terminal 3710 , thereby improving the stability of the electrical connection between the lead-out terminal 3710 and the second circuit board 34 . In other embodiments, the leads in the focusing assembly 36 can also be electrically connected to the first circuit board 355 , which is not limited in the present application. For example, the bracket body 371 is fixed to the first circuit board 355, and the bracket body 371 is fixed to the first circuit board 355.

Please continue to refer to FIG. 37 . FIG. 37 is a schematic cross-sectional view of the structure shown in FIG. 30 along the line D-D. In some embodiments, the first driving member 361 is fixed to the bracket body 371 . The second driving member 362 is fixed on the outer side of the lens carrier 363 and is disposed opposite to the first driving member 361 . The image sensor 356 is located on the light-emitting side of the lens 33 .

In some embodiments, when the second driving member 362 or the first driving member 361 responds to the electrical signal, a magnetic field effect is formed between the second driving member 362 and the first driving member 361 to drive the lens 33 to move along the optical axis direction of the lens 33 . In the embodiment of the present application, the first driving member 361 is fixed to the bracket 37 , and when a magnetic field effect is formed between the second driving member 362 and the first driving member 361 , the second driving member 362 drives the lens carrier 363 along with the lens 33 along the lens. The optical axis direction of the camera module 33 is moved to change the distance between the lens 33 and the image sensor 356 to realize the focus adjustment of the camera module 30 .

In some embodiments, one end of the spring plate 364 is fixed to the top plate 372 , and the other end is fixed to the lens carrier 363 . Among them, the reed 364 has elasticity and can recover its deformation when it is not subjected to external force. In the embodiment of the present application, the reed 364 is connected between the top plate 372 and the lens carrier 363. When a magnetic field effect is formed between the second driving member 1226 and the first driving member 1225, when the lens 33 and the lens carrier 363 are driven to move together, The reed 364 has elasticity and can provide a buffer force for the movement of the lens 33 and the lens carrier 363 , preventing the lens 33 from suddenly moving along the optical axis 330 of the lens, and making the movement of the lens 33 more stable. At the same time, when the second driving member 362 and the first driving member 361 have no driving force to the lens 33 and the lens carrier 363, the reed 364 has the ability to restore the deformation after deformation, and the reed 364 drives the lens 33 to move back to the initial position , so that the lens 33 is reset.

For the related description of the first driving member 361 and the second driving member 362, reference can be made to the description of the first driving member 361 and the second driving member 362 in the foregoing embodiments. Exemplarily, the first driving member 361 is a magnetic body, and the second driving member 362 is a coil. Wherein, the number of the magnetic body and the coil is two, and they are respectively located on opposite sides of the lens. 35 and 37, the section shown in FIG. 35 does not include a magnetic body, and another section shown in FIG. 37 includes two oppositely arranged magnetic bodies.

Please refer to FIGS. 38 and 39 . FIG. 38 is a schematic structural diagram of the camera module 30 provided by the embodiment of the present application in Embodiment 5; FIG. 39 is a partial structural schematic diagram of the camera module 30 shown in FIG. 38 . The camera module 30 shown in FIG. 39 does not include the casing 32 .

The following mainly describes the differences between this embodiment and the foregoing fourth embodiment, and most of the same contents of this embodiment and the fourth embodiment will not be repeated. For example, an SMA motor includes a fixed part, a movable part, an SMA wire, a bracket, and a plurality of suspension wires. When the SMA wire is energized, it shrinks, which drives the movable part to translate relative to the fixed part. The plurality of suspension wires are used to suspend the movable part above the fixed part to avoid sliding friction when the movable part moves relative to the fixed part. The movable part includes an image sensor, and is provided at a distance from the lens. When the SMA motor responds to the electrical signal, it drives the image sensor to move relative to the lens along a plane perpendicular to the optical axis of the lens, so as to realize anti-shake of the camera module.

As shown in FIG. 38 , in some embodiments, the camera module 30 includes a housing 32 , a lens 33 , a first circuit board 355 and a second circuit board 34 . The lens 33 is located inside the housing 32 . Both the first circuit board 355 and the second circuit board 34 are used to lead out the wiring inside the camera module 30 . The first circuit board 355 is a flexible circuit board that can be bent, that is, the first circuit board 355 has a bending allowance. The first circuit board 355 is led out from the conduction groove 320 of the casing 32 and is connected to the second circuit board 34 . The second circuit board 34 is used to electrically connect other components of the electronic device, such as a graphics processor. The second circuit board 34 is a circuit board having the characteristics of both rigid circuit boards (printed circuit boards, PCB) and flexible printed circuit boards (FPC).

In the embodiment of the present application, part of the wiring inside the camera module 30 is led out through the first circuit board 355 , and the other part is led out through the second circuit board 34 , which is beneficial to the wiring arrangement inside the camera module 30 .

As shown in FIG. 39 , the camera module 30 further includes an SMA component 35 , a focusing component 36 , a bracket 37 and a plurality of suspension wires 38 . The SMA component 35 is located below the lens 33 and is used to realize anti-shake of the camera module 30 . Bracket 37 is located above SMA assembly 35 . A plurality of suspension wires 38 are fixedly connected between the SMA component 35 and the bracket 37 . The focusing assembly 36 is mounted on the bracket 37 and is located outside the lens 33 . Exemplarily, the first circuit board 355 is led out from the SMA assembly 35 to the outside of the housing 32 to transmit or transport the lines inside the SMA assembly 35 to the outside of the camera module 30 . The focusing assembly 36 is located above the SMA assembly 35 and is located at the periphery of the lens 33 . The focusing assembly 36 is used to drive the lens 33 to move along the optical axis direction of the lens 33 to realize focusing of the camera module 30 .

Please refer to FIG. 39 and FIG. 40 together. FIG. 40 is a schematic cross-sectional view of the camera module 30 shown in FIG. 38 . The SMA assembly 35 includes a fixed part 351 and a movable part 352 . The fixing portion 351 includes a base plate 3511 and a fixing plate 3512 attached to the base plate 3511 . The movable part 352 includes a movable board 354 , a first circuit board 355 and an image sensor 356 . The bracket 37 is suspended above the movable portion 352 and is fixedly connected to the fixed portion 351 . Exemplarily, the bracket 37 is fixed to the inner wall of the housing 32 , and the housing 32 is fixed to the periphery of the fixing portion 351 , so that the bracket 37 is fixed relative to the fixing portion 351 . The bracket 37 faces the first circuit board 355 and is spaced apart from the first circuit board 355 . The image sensor 356 is mounted on the first circuit board 355 and is located on the light-emitting side of the lens 33 . The light from the outside world passes through the lens 33 and then falls on the photosensitive surface of the image sensor 356 to form an image on the image sensor 356 .

In the embodiment of the present application, the bracket 37 and the lens 33 are suspended above the movable portion 352. When the SMA wire 353 responds to the electrical signal, it only drives the movable portion 352 (the movable plate 354, the first circuit board 355 and the image sensor 356) along the edge of the movable portion 352. The plane movement perpendicular to the optical axis of the lens 33 can achieve anti-shake without driving the lens 33 and the bracket 37 to move, and the load of the movable part 352 is small, which is beneficial to the anti-shake power consumption of the camera module 30 . At the same time, due to the concentrating effect of the lens 33 on light, compared with the traditional solution of moving the lens 33 for anti-shake, the SMA component 35 of the present embodiment drives the image sensor 356 to compensate the translation distance (ie the travel distance) required for optical path compensation. ) is shorter, which further reduces the power consumption of the camera module 30 .

In some embodiments, the first circuit board 355 includes a hard board portion 3551 and a soft board portion 3552 connected to the hard board portion. The hard plate portion 3551 is fixed above the movable plate 354 . The image sensor 356 and the suspension wires 38 are mounted on the hard board portion 3551 to ensure the structural stability of the camera module 30 . The soft board portion 3552 is drawn out from the hard board portion 3551 to the outside of the casing 32 and is electrically connected to the second circuit board 34 . The flexible board portion 3552 is provided with a bending allowance. When the first circuit board 355 moves under the action of the SMA wire in the SMA assembly 35 , the flexible board portion 3552 is bent and deformed to prevent the second circuit board 34 from moving.

In the embodiment of the present application, the SMA wire in the SMA assembly 35 shrinks when energized, and drives the movable plate 354 , the hard plate portion 3551 and the image sensor 356 to translate together relative to the fixed portion 351 to realize anti-shake of the camera module 30 . At the same time, the flexible board portion 3552 is provided with a bending allowance. When the SMA wire acts on the movable portion 352, the bending allowance can absorb the displacement caused by the acting force of the SMA wire and avoid being fixed on the second circuit board. The soft board part 3552 at one end of 34 involves the movement of the hard board part 3551 , which is beneficial to the anti-shake of the camera module 30 .

In the embodiment of the present application, the first circuit board 355 includes a hard board portion 3551 for mounting the image sensor 356, and a soft board portion 3552 located outside the casing 32. The soft board portion 3552 can be bent and deformed to avoid the first circuit board When the 355 moves under the action of the SMA wire, the second circuit board 34 is driven, thereby ensuring the stability of the connection between the second circuit board 34 and other components in the electronic device. Wherein, the hard board portion 3551 and the soft board portion 3552 can be integrally formed, and can also be connected in different structures through a process, which is not limited in the present application. Those skilled in the art can design the hard board portion 3551 and the soft board portion 3552 according to actual needs.

Please continue to refer to FIG. 39 and FIG. 40 , in some embodiments, the second circuit board 34 includes a first part 341 and a second part 342 connected to the first part 341 . The first portion 341 is located at the periphery of the first circuit board 355 and is spaced apart from the first circuit board 355 . Exemplarily, the first portion 341 surrounds the hard plate portion 3551 , that is, the hard plate portion 3551 is located inside the first portion 341 . The first part 341 is located inside the housing 32 and is convenient to be electrically connected with the SMA wire. The second part 342 is used to electrically connect the camera module with other components in the electronic device.

In the embodiment of the present application, the second circuit board 34 includes a first portion 341 and a second portion 342 extending from the first portion 341 to the outside of the housing. The first portion 341 can be used to electrically connect the SMA wire and the wires in the focusing assembly. In this case, the bottom plate 3511 does not need to design complicated circuits, which is beneficial to simplify the circuit design of the camera module 30 .

Please continue to refer to FIGS. 41 and 42 . FIG. 41 is a schematic structural diagram of the camera module 30 provided by the embodiment of the present application in the sixth embodiment; FIG. 42 is a partial cross-sectional schematic diagram of the camera module 30 shown in FIG. 41 . The camera module 30 shown in FIG. 41 does not include a casing.

The following mainly describes the differences between this embodiment and the fifth embodiment, and most of the same contents of this embodiment and the fifth embodiment will not be repeated. For example, the SMA motor includes a fixed part 351 , a movable part 352 , an SMA wire 353 , a bracket 37 and a plurality of suspension wires 38 . When the SMA wire 353 is energized, it contracts, which drives the movable portion 352 to translate relative to the fixed portion 351 . The plurality of suspension wires 38 are fixedly connected to the bracket 37 for suspending the movable part 352 above the fixed part 351 to avoid sliding friction when the movable part 352 moves relative to the fixed part 351 . The movable part 352 includes an image sensor, and is provided at a distance from the lens. When the SMA motor responds to the electrical signal, it drives the image sensor to move relative to the lens along a plane perpendicular to the optical axis of the lens, so as to realize anti-shake of the camera module.

As shown in FIG. 41 , the fixing portion 351 includes a base plate 3511 and a fixing plate 3512 mounted on the base plate 3511 . One end of the SMA wire 353 is fixed to the fixing plate 3512 , and the other end is fixed to the movable portion 352 . The second circuit board 34 is led out from the bottom plate 3511 to the outside of the casing. The first circuit board 355 includes a hard board part 3551 and a soft board part 3552 connected to the hard board part. The hard plate portion 3551 is fixed above the movable plate 354 . The image sensor 356 and the suspension wires 38 are mounted on the hard board portion 3551 to ensure the structural stability of the camera module 30 . The soft board portion 3552 is drawn out from the hard board portion 3551 to the outside of the casing 32 and is electrically connected to the second circuit board 34 . The flexible board portion 3552 is provided with a bending allowance. When the first circuit board 355 moves under the action of the SMA wire in the SMA assembly 35 , the flexible board portion 3552 is bent and deformed to prevent the second circuit board 34 from moving.

In the embodiment of the present application, a part of the wiring inside the camera module 30 is led out to the outside of the casing through the first circuit board 355 , and the other part is led out to the outside of the casing through the second circuit board 34 , which is beneficial to the internal wiring of the camera module 30 . line arrangement.

Please continue to refer to FIG. 41 and FIG. 43 . FIG. 43 is a partial structural diagram of the camera module 30 shown in FIG. 41 . In this embodiment, the bottom plate 3511 is provided with traces 3510 . The wiring 3510 is electrically connected to the SMA wire 353 . The wiring 3510 shown in FIG. 43 is only an example, and the present application does not limit the arrangement of the wiring 3510 . Those skilled in the art can design the arrangement of the traces 3510 according to actual requirements.

Exemplarily, the traces 3510 located on the base plate 3511 are embedded in the base plate 3511 through etching and semiconductor deposition processes. The wiring 3510 can also be formed as a flexible circuit board and fixed to the bottom plate 3511 by means of bonding. The present application does not limit the manner in which the wiring 3510 is provided on the bottom plate 3511 . The second circuit board 34 is connected to the wiring 3510, and the second circuit board 34 is drawn out from the bottom plate and extends to the outside of the casing. The second circuit board 34 is used for electrical connection with other components inside the electronic device.

In the embodiment of the present application, the traces 3510 electrically connected to the SMA wires 353 are formed on the base plate 3511 through a process, and the traces 3510 are integrated on the base plate 3511, thereby reducing the design of the circuit board in the camera module.

For the structure of the first circuit board 355 in the movable portion 352, reference can be made to the description of the first circuit board 355 in the fifth embodiment, which is not repeated in this application. For example, the first circuit board 355 includes a hard board part 3551 and a soft board part 3552 connected to the hard board part. The flexible board portion is provided with a bending allowance. When the first circuit board 355 moves under the action of the SMA wires 353 in the SMA assembly 35 , the flexible board portion is bent and deformed to prevent the second circuit board 34 from moving.

The above are only specific embodiments of the present application, but the protection scope of the present application is not limited to this. Any person skilled in the art can easily think of changes or replacements within the technical scope disclosed in the present application, and should cover within the scope of protection of this application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims

A camera module is characterized in that it includes an SMA motor and a lens, the SMA motor includes a fixed part, a movable part, a plurality of SMA wires and a plurality of suspension wires, and the lens is mounted on the inner side of the movable part, so that the the fixing part is located on the light-emitting side of the lens;

The plurality of suspension wires are connected between the fixed part and the movable part, and are distributed on the periphery of the movable part, and the plurality of suspension wires support the movable part, so that the movable part is suspended in the air above the fixed part; the multiple SMA wires are connected between the fixed part and the movable part, and the multiple SMA wires shrink when energized, which drives the movable part and the lens to be fixed relative to the fixed part Department moves.
The camera module according to claim 1, wherein the movable part comprises a lens carrier and a plurality of upper reeds, the lens is fixed on the inner side of the lens carrier, and the plurality of upper reeds are distributed on the inner side of the lens carrier. The periphery of the lens carrier is in one-to-one correspondence with the plurality of suspension wires, one end of each of the upper springs is fixed on the top side of the lens carrier, and the other end is fixed on the corresponding suspension wires.
The camera module according to claim 1 or 2, wherein the fixing part comprises an anti-shake lead-in wire and an anti-shake lead-out wire, and the anti-shake lead-in wire is electrically connected to one end of the SMA wire; the The SMA motor further includes a sub-suspension wire, one end of the sub-suspension wire is fixed to the fixing part, and is electrically connected to the anti-shake lead wire, and the other end of the sub-suspension wire is fixed to the movable part, and is electrically connected to the movable part. Connect the other end of the SMA wire.
The camera module according to claim 3, wherein the number of the anti-shake lead-in wires is a plurality, and the plurality of the anti-shake lead-in wires are electrically connected to the plurality of the SMA wires in a one-to-one correspondence; The movable part includes a movable plate facing the fixed part, and a plurality of the SMA wires are fixed on the movable plate; the SMA motor also includes an anti-shake connecting wire, and the anti-shake connecting wire is connected between the movable plate and the movable plate. Between the auxiliary suspension wires, and the movable plate adopts conductive material, so that the anti-shake connecting wire is electrically connected to each of the SMA wires.
The camera module according to claim 4, wherein the fixed portion comprises a bottom plate and a fixed plate mounted on the bottom plate, the fixed plate faces the movable plate and is spaced from the movable plate, the One end of the SMA wire is fixed on the fixed plate, the anti-shake lead-in wire is set on the fixed plate, the anti-shake lead-out wire is set on the bottom plate, one end of the auxiliary suspension wire is fixed on the bottom plate, and the other end is fixed on the bottom plate. One end is fixed to the movable part.
The camera module according to claim 3, wherein the camera module further comprises a circuit board and an image sensor mounted on the circuit board, the circuit board is located below the SMA motor; Both the shaking lead-in line and the anti-shake lead-out line are led out from the fixing part and are electrically connected with the circuit board.
The camera module according to any one of claims 1 to 5, wherein the camera module further comprises a circuit board, an image sensor, a base and a filter, the circuit board, the image sensor, The base and the filter are located below the SMA motor, the image sensor is mounted on the circuit board, the base is fixed on the top of the circuit board, and the filter is fixed on the circuit board The base is arranged opposite to the image sensor.
The camera module according to claim 7, wherein the movable part further comprises a base, a first driving member, a second driving member and a lower spring, and the lens is located inside the base, so The first driving member is fixed on the base, the second driving member is located between the first driving member and the lens, and is fixed relative to the lens; the first driving member and the second driving member are The driving members are arranged oppositely, and when the first driving member or the second driving member responds to an electrical signal, a magnetic field effect is formed between the first driving member and the second driving member, and the lens is driven along the The optical axis direction of the lens moves; the lower spring is connected between the base and the lens, and is located below the second driving member.
The camera module according to claim 8, wherein the movable part further comprises a connecting piece and a plurality of focusing leads, the connecting piece is fixed on the side of the base, and the first driving member Or the second driving member is electrically connected to the connecting piece; the plurality of focusing leads are arranged on the fixing part, and are connected to the plurality of suspension wires in a one-to-one correspondence; the plurality of suspension wires are Conductive material, the plurality of focusing leads are electrically connected to the connecting piece through the plurality of suspension wires respectively.
The camera module according to claim 9, wherein the plurality of suspension wires comprises a first suspension wire, a second suspension wire, a third suspension wire and a fourth suspension wire; The second suspension wires are arranged symmetrically in the X-axis direction, the third suspension wires and the fourth suspension wires are symmetrically arranged in the X-axis direction, and the first suspension wires and the fourth suspension wires are arranged in the X-axis direction. The second suspension wires and the third suspension wires are symmetrically arranged in the Y-axis direction; wherein, the X-axis direction is perpendicular to and intersects with the Y-axis direction;

The first suspension wire and the second suspension wire are located on the same side of the connection piece, and the third suspension wire and the fourth suspension wire are located on the other side of the connection piece, and are opposite to the first suspension wire. A suspension wire and the second suspension wire are far away from the connecting piece; the camera module further includes two closed-loop leads, the two closed-loop leads are embedded in the base, and one closed-loop lead is connected to the first Between the three suspension wires and the connection piece, the other closed-loop lead is connected between the fourth suspension wire and the connection piece.
The camera module according to claim 1 or 2, wherein the movable part comprises a movable board, a circuit board and an image sensor, and the movable board, the circuit board and the image sensor are all located on the lens On the light-emitting side of the device, the movable plate faces the fixed portion and is spaced apart from the fixed portion, the circuit board is fixed above the movable plate, and the image sensor is mounted on the circuit board; the SMA A wire is fixedly connected to the movable plate.
The camera module according to claim 11, wherein the fixing part comprises a base plate and a fixing plate fixed on the base plate, the fixing plate and the movable plate are arranged at intervals, and one end of the SMA wire is fixedly connected the fixing plate;

The camera module further includes a casing, a flexible-rigid combination board and a flexible circuit board, the casing is fixed on the periphery of the bottom plate, and the movable part is accommodated inside the casing; the flexible-rigid combination board is self-contained. The bottom plate is drawn out to the outside of the casing and is electrically connected to the SMA wire; the flexible circuit board is electrically connected to the rigid-flex board and the circuit board, and the flexible circuit board is provided with There is a bending allowance.
The camera module according to claim 12, wherein the flexible circuit board is drawn out from the circuit board to the outer side of the casing, and the flexible circuit board comprises a first bending area, a A first flattening area and a second bending area, one end of the first bending area is fixedly connected to the circuit board, and the other end is fixedly connected to the first side of the first flattening area; the second bending area One end is fixedly connected to the second side edge of the first flat area, and the other end is fixedly connected to the rigid-flex board; wherein, the first side edge is arranged adjacent to the second side edge, the first The extending direction of a bending area includes at least two directions, and the extending direction of the second bending area includes at least two directions.
The camera module according to claim 13, wherein the flexible-rigid combination board comprises a third bending area and a second flattening area, one end of the third bending area is connected to the bottom plate, and the The extension direction of the third bending area includes at least two directions; the second flat area is connected to the end of the third bending area away from the bottom plate, and the flexible circuit board is fixed on the second flat area Exhibition area.
The camera module according to claim 12, wherein one end of the flexible circuit board is fixed under the circuit board, the other end is fixed on the bottom plate, and the flexible circuit board is located in the The inner side of the casing; the SMA motor is provided with an escape space passing through the fixed plate and the movable plate, and the flexible circuit board is accommodated in the escape space.
The camera module according to any one of claims 12 to 15, wherein the movable part further comprises a base and an upper spring, the base is located above the circuit board, and the lens is located at the top of the circuit board. The inner side of the base is connected to the base; the upper spring is fixed on the top of the base, one end of the plurality of suspension wires is fixed on the upper spring, and the other end is fixed on the Fixed part.
A camera module, characterized in that it includes an SMA motor and a lens, the SMA motor includes a fixed part, a movable part, a plurality of SMA wires, a bracket and a plurality of suspension wires, and the movable part is located on the light-emitting side of the lens , and is located above the fixed part, the bracket is suspended above the movable part, and is fixedly connected relative to the fixed part, and the plurality of suspension wires are connected between the bracket and the movable part , and distributed on the periphery of the bracket, the plurality of suspension wires suspend the movable part, so that the movable part is suspended above the fixed part;

The movable part includes a movable plate and an image sensor, the movable plate faces the fixed part and is spaced apart from the fixed part, the image sensor is located above the movable plate; the SMA wire is connected to the fixed part Between the fixed part and the movable plate, the plurality of SMA wires shrink when energized, which drives the movable plate and the image sensor to move relative to the fixed part.
The camera module according to claim 17, wherein the movable part further comprises a first circuit board, the first circuit board is fixed above the movable board, and the image sensor is mounted on the first circuit board. a circuit board;

The bracket includes a bracket body and a top plate, the bracket body faces the first circuit board and is spaced apart from the first circuit board, and the top plate is fixed above the bracket body; the plurality of suspension wires It is located on the periphery of the bracket body, and one end of each of the suspension wires is fixed on the top plate, and the other end is fixed on the first circuit board.
The camera module according to claim 18, wherein the camera module further comprises a casing and a second circuit board, the casing is fixed on the fixed part, the movable part, the SMA wire and the The brackets are all accommodated in the inner side of the housing, and the brackets are fixed on the inner wall of the housing; one end of the second circuit board is fixedly connected to the fixing portion, and the other end is led out from the fixing portion to the outer wall of the housing. outside, and the image sensor and the SMA wire are respectively electrically connected to the second circuit board.
The camera module according to claim 19, wherein the second circuit board comprises a first part and a second part connected with the first part, the first part is fixed on the fixing part and is connected with the first part. the first circuit boards are arranged at intervals; the second part is located on the side of the first part away from the first circuit board, and the second part is located on the outer side of the casing; the camera module further includes a flexible A connecting piece, the flexible connecting piece is electrically connected between the first circuit board and the first part.
The camera module according to claim 20, wherein the first part is a hollow structure, the first circuit board is located inside the first part, and the number of the flexible connectors is multiple, a plurality of The flexible connecting pieces are arranged symmetrically, and one end of each flexible connecting piece is fixed to the first circuit board, and the other end is fixed to the first part.
The camera module according to claim 19, wherein the first circuit board comprises a hard board part and a soft board part connected with the hard board part, the hard board part is fixed on the movable board, the soft board part is led out from the hard board part to the outer side of the casing, and is electrically connected with the second circuit board;

The fixed part includes a bottom plate and a fixed plate on the bottom plate, one end of the SMA wire is fixed on the fixed plate, and the other end is fixed on the movable plate; the bottom plate is provided with a wiring, and the wiring is connected with the The SMA wire is electrically connected, the second circuit board is drawn out from the bottom plate, and the second circuit board is connected with the wiring.
The camera module according to any one of claims 17 to 22, wherein the SMA motor further comprises a focusing assembly, the focusing assembly is mounted on the bracket, and the lens is located in the focusing assembly. On the inner side of the assembly, when the focusing assembly responds to the electrical signal, the lens is driven to move along the direction of the optical axis of the lens.
An electronic device, characterized in that it comprises a casing, a graphics processor and the camera module according to any one of claims 1 to 23, wherein the graphics processor and the camera module are accommodated in the casing , the camera module is electrically connected to the graphics processor.
An SMA motor is characterized in that it comprises a fixed part, a movable part, a plurality of SMA wires and a plurality of suspension wires, the plurality of suspension wires are connected between the fixed part and the movable part, and are distributed in all the SMA wires. At the periphery of the movable part, the plurality of suspension wires support the movable part, so that the movable part is suspended above the fixed part; the plurality of SMA wires are connected between the fixed part and the movable part During the time, the plurality of SMA wires shrink when energized, and drive the movable part to move relative to the fixed part.
The SMA motor according to claim 25, wherein the movable part comprises a lens carrier and a plurality of upper springs, the lens carrier is used to fix the lens, and the plurality of upper springs are distributed on the lens carrier One end of each upper spring is fixed to the top side of the lens carrier, and the other end is fixed to the corresponding suspension wire.
The SMA motor according to claim 25 or 26, wherein the fixing part comprises an anti-shake lead-in wire and an anti-shake lead-out wire, the anti-shake lead-in wire is electrically connected to one end of the SMA wire; the SMA The motor further includes a sub-suspension wire, one end of the sub-suspension wire is fixed to the fixing part and is electrically connected to the anti-shake lead wire, and the other end of the sub-suspension wire is fixed to the movable part and electrically connected to the movable part. Connect the other end of the SMA wire.
The SMA motor according to claim 27, wherein the number of the anti-shake lead-in wires is a plurality, and the plurality of the anti-shake lead-in wires are electrically connected to the plurality of the SMA wires in a one-to-one correspondence; the The movable part includes a movable plate facing the fixed part, and a plurality of the SMA wires are fixed on the movable plate; the SMA motor also includes an anti-shake connecting wire, and the anti-shake connecting wire is connected between the movable plate and the movable plate. between the auxiliary suspension wires, and the movable plate is made of conductive material, so that the anti-shake connecting wire is electrically connected to each of the SMA wires.