Electronic equipment and camera module

Abstract

The utility model relates to an electronic device and a camera module, the camera module comprises a shell, a substrate, a chip and a piezoelectric driving unit, the substrate is rotatably connected with the shell around an optical axis, the chip is connected with the substrate, and the substrate is provided with a friction surface intersecting with the optical axis; the piezoelectric driving unit comprises a piezoelectric part and a driving part, the piezoelectric part is telescopic in the direction intersecting with the optical axis, the two ends of the piezoelectric part are connected with the shell and the driving part respectively, and the driving part makes contact with the friction surface so as to drive the substrate to rotate around the optical axis. According to the camera module disclosed by the invention, the chip can intermittently rotate around the optical axis, so that anti-shake in the rotation direction is realized. Therefore, the shooting experience of the user in a long exposure scene, a hand-held scene or a walking scene and other motion scenes can be improved.

Description

Technical Field

[0001] The present disclosure relates to the technical field of electronic equipment, and in particular to an electronic equipment and a camera module. Background Art

[0002] At present, the anti-shake of camera modules is generally anti-shake in the moving direction, but not in the rotating direction, that is, it can compensate for the shaking in the moving direction, but not in the rotating direction. This greatly reduces the user's shooting experience in long exposure scenes, hand-held or walking scenes, and other sports scenes. Utility Model Content

[0003] The present disclosure provides a camera module to achieve anti-shake in the rotation direction.

[0004] The camera module disclosed in the present invention includes a shell, a substrate, a chip and a piezoelectric drive unit. The substrate is rotatably connected to the shell around an optical axis, the chip is connected to the substrate, and the substrate has a friction surface intersecting the optical axis. The piezoelectric drive unit includes a piezoelectric part and a drive part. The piezoelectric part is retractable along a direction intersecting the optical axis. Both ends of the piezoelectric part are respectively connected to the shell and the drive part. The drive part contacts the friction surface to drive the substrate to rotate around the optical axis.

[0005] Optionally, the camera module includes a lens, which is arranged on the side of the chip facing away from the substrate in the extension direction of the optical axis, and the piezoelectric drive unit is arranged on the side of the substrate facing away from the chip in the extension direction of the optical axis, and the surface of the substrate facing away from the chip forms the friction surface.

[0006] Optionally, the shell includes a base, which is arranged on the side of the piezoelectric driving unit facing away from the substrate in the extension direction of the optical axis; the base is provided with a positioning groove with a notch facing the substrate, at least a portion of the piezoelectric part is arranged in the positioning groove, and an end of the piezoelectric part facing away from the driving part is connected to the base.

[0007] Optionally, the substrate is provided with a recessed portion, and the chip is arranged in the recessed portion.

[0008] Optionally, the shell includes a bracket, the bracket includes a first part and a second part, the first part extends along the extension direction of the optical axis, and the second part intersects with the first part; the second part is provided with a first sliding part, and the substrate is provided with a second sliding part, and the second sliding part can be slidably matched with the first sliding part around the optical axis.

[0009] Optionally, the first sliding part is a first sliding groove, the second sliding part is a second sliding groove, and the first sliding groove and the second sliding groove are both arc-shaped grooves; the camera module also includes a ball, and the ball can be rolled in the first sliding groove and the second sliding groove.

[0010] Optionally, the driving portion is provided with a friction protrusion protruding toward the friction surface, and the friction protrusion is in contact with the friction surface.

[0011] Optionally, the friction protrusion includes an arcuate surface, and the arcuate surface contacts the friction surface.

[0012] Optionally, there are multiple piezoelectric drive units, and the multiple piezoelectric drive units are arranged at intervals around the optical axis.

[0013] Optionally, the number of the piezoelectric drive units is an even number, the piezoelectric drive units are arranged in pairs, and the two piezoelectric drive units arranged in pairs are arranged on opposite sides of the housing.

[0014] The present disclosure also provides an electronic device.

[0015] The electronic device disclosed in the present invention includes the camera module described in any one of the above items.

[0016] When the camera module disclosed in the present invention is working, the piezoelectric part of the piezoelectric drive unit is supplied with a driving voltage in the first direction. Based on the inverse piezoelectric effect, the piezoelectric part will extend or shorten along the direction intersecting the optical axis. The driving part is in contact with the friction surface, so that friction is generated between the driving part and the friction surface, and the substrate is driven to rotate around the optical axis under the action of the friction force. The chip is connected to the substrate, thereby driving the chip to rotate around the optical axis; then the piezoelectric part of the piezoelectric drive unit is quickly powered off or quickly supplied with a driving voltage in the second direction. Based on the inverse piezoelectric effect, the piezoelectric part will shorten or lengthen rapidly along the direction intersecting the optical axis. Under the action of inertial force, the position of the substrate remains unchanged. Repeating the above steps can make the chip rotate intermittently around the optical axis, thereby achieving anti-shake in the rotation direction. In this way, the user's shooting experience in long exposure scenes, hand-held or walking and other sports scenes can be improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a stereoscopic diagram of a camera module according to an embodiment of the present disclosure.

[0018] Figure 2 1. The figure is a top view of a camera module according to an embodiment of the present disclosure.

[0019] Figure 3 yes Figure 2 AA view.

[0020] Figure 4 yes Figure 2 BB direction view.

[0021] Figure 5 yes Figure 4 Enlarged view of point C in the middle.

[0022] Figure 6 It is a schematic diagram of a piezoelectric drive unit in a camera module according to an embodiment of the present disclosure.

[0023] Figure 7 It is an exploded view of a camera module according to an embodiment of the present disclosure.

[0024] Figure 8 yes Figure 7 Schematic diagram of the structure of the medium voltage electric drive unit.

[0025] Fig. 9 yes Figure 7 Schematic diagram of the structure of the middle base.

[0026] Fig.10 yes Figure 7 Schematic diagram of the structure of the middle substrate.

[0027] Fig.11 yes Figure 7 Schematic diagram of the structure of the middle bracket.

[0028] Reference numerals:

[0029] 100. Camera module;

[0030] 1. housing; 11. base; 111. positioning groove; 12. bracket; 121. first part; 122. second part; 1221. first sliding part; 123. bracket through hole;

[0031] 2. substrate; 21. friction surface; 22. recessed portion; 23. raised portion; 231. second sliding portion;

[0032] 3. Chip;

[0033] 4. Piezoelectric drive unit; 41. Piezoelectric part; 42. Drive part; 421. Friction protrusion; 4211. Arc surface;

[0034] 5. Ball bearing;

[0035] 6. Lens;

[0036] 7. Infrared cutoff filter;

[0037] 8. Anti-shake motor; 81. Light hole. DETAILED DESCRIPTION

[0038] Embodiments of the present disclosure are described in detail below, and examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present disclosure, but should not be understood as limiting the present disclosure.

[0039] like Figures 1 to 5 As shown, the camera module 100 of the embodiment of the present disclosure includes a housing 1, a substrate 2, a chip 3 and a piezoelectric drive unit 4. The substrate 2 is rotatably connected to the housing 1 around the optical axis, and the chip 3 is connected to the substrate 2. The piezoelectric drive unit 4 includes a piezoelectric portion 41 and a drive portion 42. The piezoelectric portion 41 is retractable along the direction of the optical axis, and the two ends of the piezoelectric portion 41 are respectively connected to the housing 1 and the drive portion 42. The substrate 2 has a friction surface 21 intersecting the optical axis, and the drive portion 42 contacts the friction surface 21 to drive the substrate 2 to rotate around the optical axis. The chip 3 and the substrate 2 can be welded or bonded. The friction surface 21 can be perpendicular to the optical axis, and the piezoelectric portion 41 can be retractable along the direction perpendicular to the optical axis.

[0040] The piezoelectric portion 41 may include one or more piezoelectric ceramic sheets. When there are multiple piezoelectric ceramic sheets, the multiple piezoelectric ceramic sheets are stacked in sequence along a direction intersecting the optical axis.

[0041] Among them, Figure 6 As shown, the driving mode of the piezoelectric drive unit 4 is piezoelectric stick-slip drive, also called inertial stick-slip drive. Specifically, the piezoelectric ceramic is controlled to deform at a relatively small speed, so that static friction is generated between the drive part 42 and the friction surface 21, so that the piezoelectric part 41 drives the substrate 2 to move when it is stretched and deformed, and then drives the chip 3 to move; the acceleration generated by the rapid deformation of the piezoelectric ceramic is controlled, so that dynamic friction is generated between the drive part 42 and the friction surface 21, so that the substrate 2 remains in its original position when the piezoelectric part 41 is stretched and deformed.

[0042] When the camera module 100 of the disclosed embodiment is working, the piezoelectric part 41 of the piezoelectric drive unit 4 is supplied with a driving voltage in the first direction. Based on the inverse piezoelectric effect, the piezoelectric part 41 will extend or shorten along the direction intersecting the optical axis. The driving part 42 is in contact with the friction surface 21, so that friction is generated between the driving part 42 and the friction surface 21, and the substrate 2 is driven to rotate around the optical axis under the action of the friction force. The chip 3 is connected to the substrate 2, thereby driving the chip 3 to rotate around the optical axis; then the piezoelectric part 41 of the piezoelectric drive unit 4 is quickly powered off or quickly supplied with a driving voltage in the second direction. Based on the inverse piezoelectric effect, the piezoelectric part 41 will shorten or lengthen rapidly along the direction intersecting the optical axis. Under the action of the inertial force, the position of the substrate 2 remains unchanged. Repeating the above steps can make the chip 3 rotate intermittently around the optical axis, thereby achieving anti-shake in the rotation direction. As a result, the user's shooting experience in long exposure scenes, hand-held or walking and other sports scenes can be improved.

[0043] In addition, the piezoelectric drive unit 4 has no electromagnetic structure, will not generate electromagnetic interference, and will not interfere with the AF (Automatic Focus) and OIS (Optical Image Stabilization) functions of the camera module 100. The driving force of the piezoelectric drive unit 4 is large and is not prone to jamming. The piezoelectric drive unit 4 has a fast response speed and high control accuracy. The piezoelectric drive unit 4 has a power-off self-locking function, which is conducive to reducing the power consumption of the camera module 100.

[0044] For example, the friction surface 21 is perpendicular to the optical axis, and the piezoelectric portion 41 is retractable in a direction perpendicular to the optical axis. Figure 6 As shown, in the initial state, the driving part 42 of the piezoelectric driving unit 4 contacts the friction surface 21 of the substrate 2 (as shown in Figure a); then, a positive driving voltage is applied to the piezoelectric part 41, and based on the inverse piezoelectric effect, the piezoelectric part 41 will extend L in a direction perpendicular to the optical axis (as shown in Figure b), and the driving part 42 is in contact with the friction surface 21, so that a friction force is generated between the driving part 42 and the friction surface 21, and the substrate 2 is driven to rotate around the optical axis under the action of the friction force, and the chip 3 is connected to the substrate 2, thereby driving the chip 3 to rotate around the optical axis; then, the piezoelectric part 41 is quickly powered off or a negative driving voltage is quickly applied to the piezoelectric part 41, and based on the inverse piezoelectric effect, the piezoelectric part 41 will quickly shorten in a direction perpendicular to the optical axis (as shown in Figure c), and under the action of the inertial force, the position of the substrate 2 remains unchanged. Repeating the above steps can make the chip 3 intermittently rotate in the clockwise direction around the optical axis, thereby realizing the anti-shake function in the rotation direction. Alternatively, a negative driving voltage may be applied to the piezoelectric portion 41 first, and then the piezoelectric portion 41 is quickly powered off or a positive driving voltage is quickly applied to the piezoelectric portion 41, and this step may be repeated to allow the chip 3 to intermittently rotate counterclockwise around the optical axis.

[0045] It is understandable that when the driving part 42 is in surface contact with the friction surface 21, the friction force between the piezoelectric driving unit 4 and the substrate 2 is greater, and it is easier to drive the substrate 2 to rotate around the optical axis. However, it is difficult to ensure that the driving part 42 and the friction surface 21 are in contact everywhere with the existing processing technology, that is, the driving part 42 and the friction surface 21 can only be partially in contact. If the driving part 42 is set to be in surface contact with the friction surface 21, the contact position of the driving part 42 and the friction surface 21 is difficult to determine, which affects the driving stability of the piezoelectric driving unit 4 on the substrate 2.

[0046] Alternatively, if Figure 3 , Figure 4 and Figure 7 As shown, the driving portion 42 is provided with a friction protrusion 421 protruding toward the friction surface 21 , and the friction protrusion 421 is in contact with the friction surface 21 .

[0047] By providing the friction protrusion 421 on the driving part 42, the friction protrusion 421 can always maintain contact with the friction surface 21, thereby improving the driving stability of the piezoelectric driving unit 4 on the substrate 2 and improving the rotation stability of the chip 3 during the rotation anti-shake process of the camera module 100.

[0048] Alternatively, if Figure 8 As shown, the friction protrusion 421 includes an arcuate surface 4211 , and the arcuate surface 4211 contacts the friction surface 21 .

[0049] The arc surface 4211 may be a spherical surface, an ellipsoidal surface, a semi-cylindrical surface, etc. When the arc surface 4211 is a spherical surface or an ellipsoidal surface, the arc surface 4211 and the friction surface 21 are in point contact. When the arc surface 4211 is a semi-cylindrical surface, the arc surface 4211 and the friction surface 21 are in line contact.

[0050] By utilizing the arc surface 4211 to contact the friction surface 21, not only can the stress concentration phenomenon of the friction protrusion 421 be reduced and the structural strength of the friction protrusion 421 be improved; it can also prevent the friction protrusion 421 from scratching the friction surface 21 when moving relative to the friction surface 21, thereby improving the reliability of the camera module 100.

[0051] Alternatively, if Figure 7 As shown, there are multiple piezoelectric drive units 4, and the multiple piezoelectric drive units 4 are arranged at intervals around the optical axis. The directions of the torques generated by the multiple piezoelectric drive units 4 on the substrate 2 are the same.

[0052] For example, Figure 7 As shown, there are four piezoelectric drive units 4, which are evenly spaced around the optical axis. In the clockwise direction around the optical axis, the drive portion 42 of each piezoelectric drive unit 4 is arranged on the same side of the piezoelectric portion 41.

[0053] By providing a plurality of piezoelectric drive units 4 , the rotational torque of the substrate 2 rotating around the optical axis can be increased, thereby avoiding the problem of jamming during the rotation of the substrate 2 , and further improving the reliability of the camera module 100 .

[0054] Alternatively, if Figure 7 As shown, the number of the piezoelectric drive units 4 is an even number, the piezoelectric drive units 4 are arranged in pairs, and the two piezoelectric drive units 4 arranged in pairs are arranged on opposite sides of the housing 1 .

[0055] In order to make the technical solution of this invention easier to understand, the following takes the example that the extension direction of the optical axis is consistent with the up-down direction, the width direction of the housing 1 is consistent with the left-right direction, and the length direction of the housing 1 is consistent with the front-back direction to further describe the technical solution of this invention. Figure 1 , Figure 3 , Figure 4 and Figure 7 As shown, the left and right directions are Figures 1 to 3 , Figure 7 As shown, the front-to-back direction is Figure 1 , Figure 2 and Figure 7 shown.

[0056] For example, the outer periphery of the housing 1 is in the shape of a cube, and its projection in the extension direction of the optical axis is in the shape of a rectangle. Figure 7 As shown, the four piezoelectric drive units 4 are arranged in two pairs, wherein one pair of piezoelectric drive units 4 are arranged opposite to each other along the left-right direction, and the other pair of piezoelectric drive units 4 are arranged opposite to each other along the front-back direction.

[0057] By arranging the piezoelectric drive units 4 in pairs and arranging the two piezoelectric drive units 4 in pairs on opposite sides of the shell 1, the opposite sides of the substrate 2 are subjected to the same force, thereby improving the force balance of the substrate 2 and further improving the reliability of the camera module 100.

[0058] Alternatively, if Figures 1 to 4 , Figure 7 As shown, the camera module 100 includes a lens 6, which is arranged on the side of the chip 3 facing away from the substrate 2 in the extension direction of the optical axis. The housing 1 includes a base 11, which is arranged on the side of the substrate 2 facing away from the chip 3 in the extension direction of the optical axis, and the surface of the substrate 2 facing away from the chip 3 forms a friction surface 21.

[0059] For example, Figure 3 and Figure 4 As shown, the chip 3 is arranged on the upper side of the substrate 2 , the lens 6 is arranged on the upper side of the chip 3 , the piezoelectric drive unit 4 is arranged on the lower side of the substrate 2 , and the lower surface of the substrate 2 forms a friction surface 21 .

[0060] By setting the piezoelectric drive unit 4 on the side of the substrate 2 facing away from the chip 3, not only can the piezoelectric drive unit 4 avoid interference with the chip 3, but also the piezoelectric drive unit 4 can avoid affecting the light entering the camera module 100, which facilitates the arrangement and installation of the piezoelectric drive unit 4 and helps to reduce the cost of the camera module 100.

[0061] Alternatively, if Figure 3 and Figure 4 As shown, the housing 1 includes a base 11, and the base 11 is arranged on a side of the piezoelectric drive unit 4 facing away from the substrate 2 in the extending direction of the optical axis. Figure 7 and Fig. 9 As shown, the base 11 is provided with a positioning groove 111 with a notch facing the substrate 2. At least a portion of the piezoelectric portion 41 is disposed in the positioning groove 111, and one end of the piezoelectric portion 41 facing away from the driving portion 42 is connected to the base 11.

[0062] Among them, at least a part of the piezoelectric part 41 is arranged in the positioning groove 111, which can be understood as: a part of the piezoelectric part 41 is arranged in the positioning groove 111, and another part of the piezoelectric part 41 is arranged outside the positioning groove 111; or, the piezoelectric part 41 is arranged in the positioning groove 111 as a whole.

[0063] For example, Figure 7 As shown, the slot opening of the positioning slot 111 faces upward, and one end of the piezoelectric part 41 facing away from the driving part 42 is connected to the slot sidewall of the positioning slot 111. The end of the piezoelectric part 41 facing away from the driving part 42 and the slot sidewall of the positioning slot 111 can be bonded.

[0064] By providing a positioning groove 111 on the base 11 and disposing at least a portion of the piezoelectric part 41 in the positioning groove 111, the compactness of the layout between the piezoelectric part 41 and the base 11 can be improved, thereby reducing the size of the camera module 100 in the extension direction of its optical axis, which is beneficial to the miniaturization and lightweight design of the camera module 100.

[0065] Alternatively, if Figure 3 , Figure 4 , Figure 7 and Fig.10 As shown, the substrate 2 is provided with a recessed portion 22 , and the chip 3 is disposed in the recessed portion 22 .

[0066] For example, Figure 3 and Figure 4 As shown, the substrate 2 is provided with a recessed portion 22 recessed downward.

[0067] By setting a recess 22 on the substrate 2 and setting the chip 3 in the recess 22, the compactness of the layout between the chip 3 and the substrate 2 can be improved, thereby reducing the size of the camera module 100 in the extension direction of its optical axis, which is beneficial to the miniaturization and lightweight design of the camera module 100.

[0068] Alternatively, if Figure 3 and Figure 4 As shown, the housing 1 includes a bracket 12, the bracket 12 includes a first portion 121 and a second portion 122, the first portion 121 extends along the extension direction of the optical axis, and the second portion 122 intersects the first portion 121. The second portion 122 is provided with a first sliding portion 1221, and the substrate 2 is provided with a second sliding portion 231, and the second sliding portion 231 is slidably matched with the first sliding portion 1221 around the optical axis.

[0069] For example, Figure 3 and Figure 4 As shown, the first part 121 extends in the up-down direction, and the second part 122 is arranged perpendicular to the up-down direction. The second part 122 is arranged on the upper side of the substrate 2, the lower side of the second part 122 is provided with a first sliding part 1221, and the upper side of the substrate 2 is provided with a second sliding part 231.

[0070] By setting a first sliding part 1221 on the second part 122 and a second sliding part 231 on the substrate 2, the second sliding part 231 can be slidably matched with the first sliding part 1221 around the optical axis, so as to limit the degree of freedom between the substrate 2 and the bracket 12, so that the substrate 2 can only rotate around the optical axis, thereby preventing the substrate 2 from undergoing other movements except rotational movement, thereby further improving the reliability of the camera module 100.

[0071] like Figure 3 and Figure 4 As shown, the second portion 122 is arranged between the lens 6 and the chip 3 in the extension direction of the optical axis, and the second portion 122 is provided with a bracket through hole 123 for light to pass through.

[0072] Alternatively, if Figure 7 , Fig.10 and Fig.11 As shown, the first sliding portion 1221 is a first sliding groove, the second sliding portion 231 is a second sliding groove, and both the first sliding groove and the second sliding groove are arc-shaped grooves. The camera module 100 also includes a ball 5, which is rollably disposed in the first sliding groove and the second sliding groove. The center line of the arc-shaped groove coincides with the optical axis.

[0073] By setting the first sliding part 1221 as the first sliding groove, the second sliding part 231 as the second sliding groove, and arranging the ball 5 in the first sliding groove and the second sliding groove, rolling friction is achieved between the first sliding part 1221 and the second sliding part 231 and the ball 5, thereby reducing the friction force between the first sliding part 1221 and the second sliding part 231.

[0074] Therefore, when the friction between the piezoelectric drive unit 4 and the friction surface 21 is small, the substrate 2 can be driven to rotate around the optical axis, reducing the driving force requirement of the piezoelectric drive unit 4 and helping to further reduce the cost of the camera module 100.

[0075] Alternatively, if Fig.10 As shown, the base plate 2 includes a protruding portion 23 , the protruding portion 23 is arranged to protrude relative to the recessed portion 22 , and the second sliding portion 231 is arranged on the protruding portion 23 .

[0076] It is understandable that if the second sliding groove is directly provided on the substrate 2, the structural strength of the substrate 2 will be affected, thereby affecting the reliability of the camera module 100. By providing the protrusion 23 on the substrate 2 and providing the second sliding portion 231 on the protrusion 23, it is possible to avoid the second sliding portion 231 affecting the structural strength of the substrate 2, thereby improving the reliability of the camera module 100.

[0077] Alternatively, if Fig.11As shown, a boss is provided on the side of the second portion 122 facing the chip 3 , and the first sliding portion 1221 is disposed on the boss.

[0078] By providing a boss on the second portion 122 and providing the first sliding portion 1221 on the boss, it is possible to prevent the first sliding portion 1221 from affecting the structural strength of the bracket 12 , thereby improving the reliability of the camera module 100 .

[0079] Optionally, there are multiple first sliding parts 1221 and multiple second sliding parts 231 , the multiple first sliding parts 1221 are evenly arranged around the optical axis, and the second sliding parts 231 correspond to the first sliding parts 1221 one by one.

[0080] For example, Fig.10 and Fig.11 As shown, the substrate 2 and the second part 122 are both rectangular plates, and there are four first sliding parts 1221 and second sliding parts 231. The four first sliding parts 1221 are respectively arranged at the four corners of the second part 122, and the four second sliding parts 231 are respectively arranged at the four corners of the substrate 2.

[0081] By setting the number of the first sliding part 1221 and the second sliding part 231 to be multiple, and the multiple first sliding parts 1221 are evenly arranged around the optical axis, the second sliding part 231 corresponds to the first sliding part 1221 one by one. On the one hand, the freedom between the substrate 2 and the bracket 12 can be more effectively limited, and the reliability of the camera module 100 can be further improved; on the other hand, the force on the substrate 2 in the direction around the optical axis is more balanced, thereby effectively avoiding the problem of jamming during the rotation of the substrate 2.

[0082] Alternatively, if Figure 3 , Figure 4 and Figure 7 As shown, the camera module 100 further includes an infrared cut-off filter 7 , and the infrared cut-off filter 7 is arranged between the lens 6 and the chip 3 .

[0083] By providing the infrared cut-off filter 7 , other light can be filtered, and the light entering the chip 3 is retained as light visible to the human eye, thereby improving the shooting quality of the camera module 100 .

[0084] Optionally, the camera module 100 further includes an anti-shake motor 8, the lens 6 is connected to a carrier of the anti-shake motor 8, and the anti-shake motor 8 is provided with a light-transmitting hole 81 for light to pass through. The lens 6 and the carrier of the anti-shake motor 8 may be bonded.

[0085] The camera module 100 of the disclosed embodiment can realize rotation anti-shake of the camera module 100 by setting the piezoelectric drive unit 4, which not only allows the rotation angle of the chip 3 to be larger; but also the piezoelectric drive unit 4 has a larger driving force on the substrate 2, which is less likely to cause a jamming problem. In addition, the structure of the entire camera module 100 is compact.

[0086] The electronic device of the embodiment of the present disclosure includes the camera module 100 described in any of the above embodiments. The electronic device may be a mobile phone, a tablet computer, a laptop computer, etc.

[0087] Since the camera module 100 of the embodiment of the present disclosure can improve the user's shooting experience in long exposure scenarios, hand-held or walking and other sports scenarios, the electronic device of the embodiment of the present disclosure has advantages such as good shooting experience.

[0088] Although the embodiments of the present disclosure have been shown and described above, it is to be understood that the above embodiments are illustrative and cannot be construed as limitations on the present disclosure. Changes, modifications, substitutions and variations of the above embodiments by those of ordinary skill in the art are all within the scope of protection of the present disclosure.

Claims

1. A camera module, characterized in that: include: case; A substrate and a chip, wherein the substrate is rotatably connected to the housing around an optical axis, the chip is connected to the substrate, and the substrate has a friction surface intersecting with the optical axis; A piezoelectric drive unit, the piezoelectric drive unit includes a piezoelectric part and a drive part, the piezoelectric part is retractable along a direction intersecting the optical axis, two ends of the piezoelectric part are respectively connected to the shell and the drive part, the drive part contacts the friction surface to drive the substrate to rotate around the optical axis.

2. The camera module according to claim 1, characterized in that: The camera module includes a lens, which is arranged on the side of the chip facing away from the substrate in the extension direction of the optical axis. The piezoelectric drive unit is arranged on the side of the substrate facing away from the chip in the extension direction of the optical axis. The surface of the substrate facing away from the chip forms the friction surface.

3. The camera module according to claim 2, characterized in that: The housing comprises a base, and the base is arranged on a side of the piezoelectric drive unit facing away from the substrate in the extending direction of the optical axis; The base is provided with a positioning groove with a notch facing the substrate, at least a part of the piezoelectric part is arranged in the positioning groove, and one end of the piezoelectric part facing away from the driving part is connected to the base.

4. The camera module according to claim 1, characterized in that: The substrate is provided with a recessed portion, and the chip is arranged in the recessed portion.

5. The camera module according to claim 1, characterized in that: The housing comprises a bracket, the bracket comprises a first part and a second part, the first part extends along the extension direction of the optical axis, and the second part intersects with the first part; The second portion is provided with a first sliding portion, and the base plate is provided with a second sliding portion, and the second sliding portion is slidably matched with the first sliding portion around the optical axis.

6. The camera module according to claim 5, characterized in that: The first sliding portion is a first sliding groove, the second sliding portion is a second sliding groove, and both the first sliding groove and the second sliding groove are arc-shaped grooves; The camera module further includes a ball bearing, and the ball bearing is rollably disposed in the first sliding groove and the second sliding groove.

7. The camera module according to claim 1, characterized in that: The driving part is provided with a friction protrusion protruding toward the friction surface, and the friction protrusion is in contact with the friction surface.

8. The camera module according to claim 7, characterized in that: The friction protrusion includes an arcuate surface, and the arcuate surface contacts the friction surface.

9. The camera module according to claim 1, characterized in that: There are multiple piezoelectric drive units, and the multiple piezoelectric drive units are arranged around the optical axis at intervals.

10. The camera module according to claim 9, characterized in that: The number of the piezoelectric drive units is an even number, the piezoelectric drive units are arranged in pairs, and the two piezoelectric drive units arranged in pairs are arranged on opposite sides of the housing.

11. An electronic device, characterized in that: A camera module comprising any one of claims 1-10.

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