Camera module

Abstract

The invention provides a camera module. The camera module includes: a stator; the rotor is arranged in the stator; a first driving unit disposed on the stator; a second driving unit disposed on the mover and facing the first driving unit; a reinforcement including an outer portion coupled to the stator, an inner portion coupled to the mover, and a connecting portion connecting the outer portion and the inner portion; a substrate coupled to the stator and the mover and disposed on the stiffener; and a lens module coupled to the substrate.

Description

[0001] This application is a divisional application of the Chinese patent application with an international application date of May 27, 2020, a national application number of 202080039749.0 (PCT application number PCT / KR2020 / 006870), and an invention name of “Camera Module”. Technical Field

[0002] This embodiment relates to a camera module. Background Art

[0003] The following description provides background information about the present embodiment rather than describing the prior art.

[0004] As various portable terminals are widely popularized and wireless Internet services are commercialized, consumer demands related to portable terminals are also diversified, and thus various types of additional devices are installed in the portable terminals.

[0005] Among the above additional devices, there is a camera module for taking an object as a photo or a dynamic picture.

[0006] Meanwhile, in recent camera modules, a hand shake correction function for preventing an image shake phenomenon caused by a photographer's hand shake and an auto focus function for aligning a focus of a lens by automatically adjusting a distance between an image sensor and the lens are applied. Summary of the invention

[0007] Technical issues

[0008] A problem to be solved by the present invention is to provide a camera module capable of reducing the size of a product.

[0009] Furthermore, another problem to be solved by the present invention is to provide a driving device for a camera module capable of providing a good OIS function without image distortion even when shooting a video, and to provide a camera module including the driving device.

[0010] Technical Solution

[0011] A camera module for achieving the above-mentioned purpose according to one aspect of the present invention includes: a stator; a mover, which is arranged inside the stator; a first drive unit, which is arranged on the stator; a second drive unit, which is arranged on the mover and faces the first drive unit; a reinforcement, which includes an outer part connected to the stator, an inner part connected to the mover, and a connecting part connecting the outer part and the inner part; a substrate, which is connected to the stator and the mover and arranged on the reinforcement; and a lens module, which is connected to the substrate.

[0012] Furthermore, the base plate may include an outer elastic portion coupled to the stator, an inner elastic portion coupled to the mover, and a connecting elastic portion connecting the outer elastic portion and the inner elastic portion.

[0013] Furthermore, the outer elastic portion and the outer portion overlap in the optical axis direction, the inner elastic portion and the inner portion overlap in the optical axis direction, and the connecting elastic portion and the connecting portion may overlap in the optical axis direction.

[0014] In addition, the inner elastic portion includes the first corner area to the fourth corner area, and the outer elastic portion includes the fifth corner area to the eighth corner area respectively adjacent to the first corner area to the fourth corner area, and the connecting elastic portion may include a first connecting elastic portion connecting the first corner area and the sixth corner area, a second connecting elastic portion connecting the second corner area and the seventh corner area, a third connecting elastic portion connecting the third corner area and the eighth corner area, and a fourth connecting elastic portion connecting the fourth corner area and the fifth corner area.

[0015] Furthermore, the mover may include a groove formed on the upper surface and a first protrusion portion protruding from the groove to be higher than the upper surface, and the first protrusion portion may be coupled to the inner portion and the inner elastic portion.

[0016] Furthermore, the stator may include a second protrusion portion protruding upward from the upper surface, and the second protrusion portion may be coupled to the outer portion and the outer elastic portion.

[0017] Furthermore, an upper end portion of the second protruding portion may be arranged to be higher than an upper end portion of the first protruding portion.

[0018] In addition, the lens module may include a protrusion protruding from the lower surface, and the protrusion may be coupled to the inner portion and the inner elastic portion.

[0019] Furthermore, the substrate may include a flexible printed circuit board (FPCB).

[0020] Furthermore, it can comprise guide balls which are arranged between the stator and the mover.

[0021] Furthermore, the mover may include a seating groove formed on an outer side surface, and at least a portion of the guide ball may be disposed in the seating groove.

[0022] Furthermore, a region of the inner side surface of the stator that contacts the guide balls may be formed as a curved surface.

[0023] Furthermore, the first driving unit may be arranged on a bottom surface of an inner side surface of the stator, and the second driving unit may be arranged on a lower surface of the mover.

[0024] In addition, the second driving unit includes: first to fourth magnets having a 2×2 arrangement; in the first magnet and the third magnet, areas adjacent to each other have a first polarity, and areas spaced apart from each other have a second polarity; and in the second magnet and the fourth magnet, areas adjacent to each other have the first polarity, and areas spaced apart from each other may have a second polarity.

[0025] In addition, the first driving unit may include: a first coil and a second coil, which overlap with the area with the first polarity among the first magnet to the fourth magnet in the optical axis direction; and a third coil and a fourth coil, which overlap with the area with the second polarity among the first magnet to the fourth magnet in the optical axis direction.

[0026] In addition, the length of the first coil and the second coil in the first direction is longer than the length of the third coil and the fourth coil in the first direction, and the length of the first coil and the second coil in the second direction perpendicular to the first direction can be shorter than the length of the third coil and the fourth coil in the second direction.

[0027] Furthermore, the first driving unit may include fifth and sixth coils that do not overlap with the first to fourth magnets in the optical axis direction.

[0028] According to one aspect of the present invention, a camera module for achieving the above-mentioned purpose includes: a stator; a mover, which is arranged in the stator; a first drive unit, which is arranged on the stator; a second drive unit, which is arranged on the mover and faces the first drive unit; a reinforcement, which is connected to the stator and the mover; a substrate, which is connected to the stator and the mover and is arranged on the reinforcement; and a lens module, which is connected to the substrate, wherein the area of ​​the substrate overlapping with the reinforcement can have the same shape as the reinforcement.

[0029] According to an aspect of the present invention, a camera driving device for achieving the above-mentioned other purposes may include: a rotor, which includes a first rounded surface located at an outer corner and moves by being provided with a first accommodating portion; a base, which includes a second rounded surface located at an inner corner and corresponding to the first rounded surface, wherein the rotor is arranged to be spaced apart from the second accommodating portion; a ball, which is arranged between the first rounded surface of the rotor and the second rounded surface of the base; a first driving unit, which is arranged on the rotor; and a second driving unit, which is arranged in the base.

[0030] Furthermore, the direction of the first rounded surface or the direction of the second rounded surface may be a direction crossing the direction of the optical axis.

[0031] Furthermore, the area of ​​the second rounded surface may be different from the area of ​​the first rounded surface.

[0032] Furthermore, the area of ​​the second rounded surface may be greater than the area of ​​the first rounded surface.

[0033] Furthermore, it includes a lens unit coupled to the first inner accommodation portion of the rotor, wherein the rotor is movable integrally with the lens unit by the first driving unit and the second driving unit.

[0034] Furthermore, the lens unit is rotatably movable along the first and second rounded surfaces with respect to the optical axis, and the lens unit is movable by being tilted vertically and horizontally with respect to the optical axis along the first and second rounded surfaces.

[0035] Furthermore, the rotor may include a ball receiving portion on which the balls are arranged.

[0036] Furthermore, it may further include an upper spring arranged to be in contact with the upper side of the base and the rotor.

[0037] Furthermore, it further includes a circuit board which is arranged below the base and controls the driving unit, wherein the circuit board includes a rigid circuit board and a flexible circuit board, and a portion of the flexible circuit board may be arranged below the rotor.

[0038] Furthermore, it includes an upper spring arranged on the rotor and the base, wherein the upper spring may include an outer support portion, the spring portion is connected to an inner portion of the outer support portion, and the inner support portion is connected to the inner portion of the spring portion.

[0039] Furthermore, the outer support is fixed to the base and the inner support may be fixed to the rotor.

[0040] A camera module for achieving the above-mentioned other objects according to an aspect of the present invention may include any one of the above-mentioned camera driving devices.

[0041] Technical Effects

[0042] According to the present embodiment, a camera module capable of reducing the size of a product can be provided.

[0043] In addition, there is a technical effect of being able to provide a good OIS function without image distortion even when shooting video, and since this is a method of moving the entire module including the lens and the image sensor, the correction range is wider than the correction range of the lens shift method, and since the optical axis of the lens and the axis of the image sensor are not shifted, there is a unique technical effect of minimizing image deformation without image distortion.

[0044] Furthermore, there is a technical effect of providing a good OIS function without image distortion, and at the same time there is a technical effect of providing a miniature camera module. BRIEF DESCRIPTION OF THE DRAWINGS

[0045] Figure 1 is a perspective view of a camera module according to a first embodiment of the present invention.

[0046] Figure 2 is an exploded perspective view of a camera module according to a first embodiment of the present invention.

[0047] Figure 3 is a side view of a camera module according to a first embodiment of the present invention.

[0048] Figure 4 is a plan view of a camera module according to a first embodiment of the present invention.

[0049] Figure 5 is a perspective view in which a lens module is removed from a camera module according to a first embodiment of the present invention.

[0050] Figure 6 is a perspective view of a reinforcement member of a camera module according to a first embodiment of the present invention.

[0051] Figure 7 is from Figure 4 A plan view with the lens module and substrate removed.

[0052] Figure 8 yes Figure 7 The plan view with the mover removed.

[0053] Fig. 9 It is along Figure 7 A cross-sectional view taken along line AA'.

[0054] Fig.10 is a bottom view of a partial configuration of a camera module according to a first embodiment of the present invention.

[0055] Fig.11 is a plan view of a second driving unit of the camera module according to the first embodiment of the present invention.

[0056] Fig.12 is from Fig.10 Bottom view with the second drive unit removed.

[0057] Fig.13a is a conceptual diagram of OIS performed by a lens shift method in a conventional camera module.

[0058] Fig.13b is a conceptual diagram of OIS performed by a lens tilt method in a conventional camera module.

[0059] Fig.14a is a plan view illustrating a camera module according to a second embodiment of the present invention.

[0060] Fig.14b is based on Fig.14a FIG. 2 is an exploded perspective view of a camera module according to a second embodiment of the present invention.

[0061] Fig.15a is based on Fig.14b FIG. 4 is a perspective view of an actuator in a camera module according to a second embodiment of the present invention.

[0062] Fig.15b is based on Fig.15a FIG. 4 is an exploded perspective view of an actuator in a camera module according to a second embodiment of the present invention.

[0063] Fig.15c is based on Fig.15a Detailed view of the upper spring in the camera module of the second embodiment of the present invention is illustrated in FIG.

[0064] Fig.16 yes Fig.15b A stereoscopic view of the rotor and the first drive unit in the actuator shown in FIG.

[0065] Fig.17 yes Fig.15b A stereoscopic view of the base and the second drive unit in the actuator shown in FIG.

[0066] Fig.18 It is a graphic Fig.15b An exemplary view of the operation of the base 1320 in the actuator is shown in FIG.

[0067] Fig.19a is based on Fig.14b FIG. 4 is a perspective view of a lens unit and a sensor unit in a camera module according to a second embodiment of the present invention.

[0068] Fig.19b yes Fig.19a Exploded three-dimensional diagram.

[0069] Fig. 20 yes Fig.19b An enlarged view of the substrate unit shown in FIG.

[0070] Fig.21 is along the basis Fig.14a 2 is a cross-sectional view taken along line A1 - A1 ′ of the camera module of the embodiment illustrated in FIG.

[0071] Fig. 22 is along the basis Fig.14a 2 is a cross-sectional perspective view taken along line A2 - A2 ′ of the camera module of the embodiment illustrated in FIG.

[0072] Fig.23a is based on Fig. 22 A first operation example of the camera module of the embodiment illustrated in FIG.

[0073] Figure 23b is based on Fig. 22 A second exemplary operational view of the camera module of the embodiment illustrated in FIG. DETAILED DESCRIPTION

[0074] Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

[0075] However, the technical concept of the present invention is not limited to some embodiments to be described, but can be implemented in various forms, and within the scope of the technical concept of the present invention, one or more of the constituent elements can be selectively combined or replaced between the various embodiments.

[0076] In addition, unless explicitly defined and described, the terms (including technical terms and scientific terms) used in the various embodiments of the present invention may be interpreted as meanings that can be generally understood by those skilled in the art, and commonly used terms, such as terms defined in dictionaries, may be interpreted in consideration of the meaning of the background of the relevant technology.

[0077] In addition, the terms used in this specification are for describing the embodiments and are not intended to limit the present invention.

[0078] In this specification, unless explicitly stated in a phrase, a singular form may include a plural form, and when described as "at least one (or more than one) of A and B and C", it may include one or more of all combinations that can be combined with A, B and C.

[0079] In addition, when describing the components of the embodiments of the present invention, terms such as first, second, A, B, (a), and (b) may be used. These terms are only intended to distinguish a component from other components, and these terms do not limit the nature, order, or sequence of the components.

[0080] Furthermore, when a component is described as being “connected,” “coupled” or “interconnected” to another component, the component is not only directly connected, coupled or interconnected to the other component but also includes the case where it is “connected,” “coupled” or “interconnected” due to another component between the other components.

[0081] Furthermore, when described as being formed or arranged “on (above)” or “below (below)” of each component, “on (above)” or “below (below)” means not only including a case where two components are in direct contact, but also including a case where one or more other components are formed or arranged between the two components. Furthermore, when expressed as “on (above)” or “below (below)”, it may include not only a meaning based on an upward direction of one component, but also a meaning based on a downward direction of one component.

[0082] The "optical axis direction" used below is defined as the optical axis direction of the lens module. Meanwhile, the "optical axis direction" may correspond to the "up-down direction", "Z-axis direction" and the like.

[0083] The "hand shake correction function" used below is defined as a function of moving or tilting the lens in a direction perpendicular to the optical axis direction to offset vibration (motion) generated in the image sensor by an external force. At the same time, "hand shake correction" can be used interchangeably with "optical image stabilization (OIS)".

[0084] Hereinafter, the present invention will be described in more detail with reference to the accompanying drawings.

[0085] Figure 1 is a perspective view of a camera module according to a first embodiment of the present invention. Figure 2 is an exploded perspective view of a camera module according to a first embodiment of the present invention. Figure 3 is a side view of a camera module according to a first embodiment of the present invention. Figure 4 is a plan view of a camera module according to a first embodiment of the present invention. Figure 5 is a perspective view in which a lens module is removed from a camera module according to a first embodiment of the present invention. Figure 6 is a perspective view of a reinforcement member of a camera module according to a first embodiment of the present invention. Figure 7 is from Figure 4 A plan view with the lens module and substrate removed. Figure 8 yes Figure 7 The plan view with the mover removed. Fig. 9 It is along Figure 7 A cross-sectional view taken along line AA'. Fig.10 is a bottom view of a partial configuration of a camera module according to a first embodiment of the present invention. Fig.11 is a plan view of a second driving unit of the camera module according to the first embodiment of the present invention. Fig.12 is from Fig.10 Bottom view with the second drive unit removed.

[0086] Reference Figures 1 to 12, the camera module 10 according to the first embodiment of the present invention may include a stator 100, a lens module 200, a substrate 300, a reinforcement 400, a mover 500, a guide ball 600, a second driving unit 700 and a first driving unit 800, but the camera module 10 may be implemented by excluding some of these configurations, and additional configurations are not excluded.

[0087] The camera module 10 may include a stator 100. The stator 100 may form the appearance of the camera module 10. The stator 100 may have a hexahedral shape with an open upper portion. Inside the stator 100, a mover 500, a guide ball 600, a second drive unit 700, and a first drive unit 800 may be arranged. The substrate 300 and the reinforcement 400 may be coupled to the stator 100.

[0088] The stator 100 may include a second protruding portion 122. The second protruding portion 122 may protrude upward from the upper surface of the stator 100. The second protruding portion 122 may be coupled to the base plate 300 and the reinforcement 400. The second protruding portion 122 may be coupled to the outer portion 420 of the reinforcement 400 and the outer elastic portion 320 of the base plate 300. The second protruding portion 122 may be inserted into the fourth coupling hole 422 of the outer portion 420 of the reinforcement 400 and the second coupling hole 322 of the outer elastic portion 320 of the base plate 300. An adhesive such as epoxy resin may be disposed between the second protruding portion 122 and the fourth coupling hole 422 of the outer portion 420, and between the second protruding portion 122 and the second coupling hole 322 of the outer elastic portion 320. The second protruding portion 122 may be inserted and fixed to the fourth coupling hole 422 of the outer portion 420 and the second coupling hole 322 of the outer elastic portion 320. The upper end portion of the second protruding portion 122 may be arranged to be higher than the upper end portion of the first protruding portion 510. Alternatively, the upper end portion of the first protruding portion 510 may protrude higher than the upper end portion of the second protruding portion 122 .

[0089] The mover 500 and the first drive unit 800 may be arranged in the inner space 110 of the stator 100. The area in contact with the guide ball 600 in the inner surface 130 of the stator 100 may be formed as a curved surface 132. The curved surface 132 may be arranged in a corner area of ​​the stator 100. The curved surface 132 may be arranged in each of the four corner areas of the stator 100. Thus, the guide ball 600 may guide the rotation of the mover 500 based on three different axes.

[0090] The camera module 10 may include a lens module 200. The optical axis of the lens module 200 may be aligned with an image sensor (not shown) formed on the substrate 300. The lens module 200 may be coupled to the substrate 300 and the reinforcement 400. The lens module 200 may include a lens unit 210 including at least one lens for collecting an image of an external object. The lens unit 210 may be spaced apart from the substrate 300 in the optical axis direction. The lens unit 210 may be spaced apart from the image sensor of the substrate 300 in the optical axis direction.

[0091] When the area exposed to the outside in the lens module 200 is referred to as the upper surface, the protrusion 202 may be provided on the lower surface of the lens module 200 to be coupled to the substrate 300 and the reinforcement. The lens module 200 may include the protrusion 202. The protrusion 202 may protrude downward from the lower surface of the lens module 200. The protrusion 202 may be coupled to the substrate 300 and the reinforcement 400. The protrusion 202 may be coupled to the inner elastic portion 310 of the substrate 300 and the inner portion 410 of the reinforcement 400. The protrusion 202 may be inserted into the first coupling hole 312 of the inner elastic portion 310 of the substrate 300 and the second coupling hole 412 of the inner portion 410 of the reinforcement 400. An adhesive such as epoxy resin may be disposed between the protrusion 202 and the first coupling hole 312 of the inner elastic portion 310 and between the protrusion 202 and the second coupling hole 412 of the inner portion 410. The protrusion 202 may be fixed by being inserted into the first coupling hole 312 of the inner elastic portion 310 of the base plate 300 and the second coupling hole 412 of the inner portion 410 of the reinforcement 400 .

[0092] The protrusion 202 may include a plurality of protrusions 202. The protrusion 202 may include two protrusions 202. The two protrusions 202 may be spaced apart from each other. Each of the two protrusions 202 may form shapes corresponding to each other at positions symmetrical to each other with respect to the optical axis of the lens module 200. The two protrusions 202 may be spaced apart from the two first protrusions 510. The angle between the virtual straight line connecting the two protrusions 202 and the virtual straight line connecting the two first protrusions 510 may be a right angle.

[0093] The camera module 10 may include a substrate 300. The substrate 300 may include a printed circuit board (PCB). The substrate 300 may include a flexible printed circuit board (FPCB). The substrate 300 may be arranged on the reinforcement 400. The substrate 300 may be coupled to the stator 100 and the mover 500. The lens module 200 may be arranged on the substrate 300. An image sensor (not shown) may be arranged on an upper surface or a front surface of the substrate 300. The optical axis of the image sensor may be aligned with the optical axis of the lens module 200. The image sensor converts the image of the object collected in the lens module 200 into an electrical signal to obtain a photographing target. In addition to the image sensor, a plurality of electronic components for driving may be mounted on the substrate 300.

[0094] Some areas of the substrate 300 may overlap with the reinforcement 400 in the optical axis direction. Local areas of the substrate 300 may be formed in a shape corresponding to the reinforcement 400. A portion of the substrate 300 corresponding to the reinforcement 400 may be used as an elastic member. In this way, the number of components can be reduced, thereby reducing the size of the product and reducing costs. The area that does not overlap with the reinforcement 400 in the optical axis direction may extend to the outside of the stator 100 and be electrically connected to the outside of the camera module 10. The area overlapping with the reinforcement 400 in the optical axis direction and the area that does not overlap with the substrate 300 may be arranged on the same plane.

[0095] The base plate 300 may include an inner elastic portion 310 coupled to the mover 500 , an outer elastic portion 320 coupled to the stator 100 , and a connecting elastic portion 330 connecting the inner elastic portion 310 and the outer elastic portion 320 .

[0096] The substrate 300 may include an inner elastic portion 310. The inner elastic portion 310 may be arranged in the central area of ​​the substrate 300. The image sensor may be arranged on the inner elastic portion 310. The inner elastic portion 310 may overlap with the inner portion 410 in the optical axis direction. The inner elastic portion 310 may form a shape corresponding to the inner portion 410. The inner elastic portion 310 may form a square plate shape. The inner elastic portion 310 may include a first corner region to a fourth corner region. Each of the first corner region to the fourth corner region may be arranged to be adjacent to each of the fifth corner region to the eighth corner region of the outer elastic portion 320.

[0097] The inner elastic part 310 may include a first coupling hole 312. The first coupling hole 312 may overlap with the third coupling hole 412 in the optical axis direction. The first coupling hole 312 may be formed to have a size corresponding to the size of the third coupling hole 412. The inner elastic part 310 may be coupled to the mover 500. The first protrusion 510 may be inserted into the first coupling hole 312 of the inner elastic part 310. The first protrusion 510 may be inserted and fixed into the first coupling hole 312 of the inner elastic part 310. The inner elastic part 310 may be coupled to the lens module 200. The protrusion 202 may be inserted into the first coupling hole 312 of the inner elastic part 310. The protrusion 202 may be inserted and fixed into the first coupling hole 312 of the inner elastic part 310. The inner elastic part 310 may move integrally with the lens module 200, the inner part 410 and the mover 500.

[0098] The inner elastic portion 310 may include a plurality of first coupling holes 312. The inner elastic portion 310 may include four first coupling holes 312. The four first coupling holes 312 may be spaced apart from each other. The four first coupling holes 312 may be respectively arranged in corner regions of the inner elastic portion 310. The first protrusion 510 may be inserted into two of the four first coupling holes 312 and the protrusion 202 may be inserted into the remaining two first coupling holes.

[0099] The substrate 300 may include an outer elastic portion 320. The outer elastic portion 320 may be spaced apart from the edge region of the inner elastic portion 310. The outer elastic portion 320 may form a rectangular ring shape. The outer elastic portion 320 may overlap with the outer portion 420 in the optical axis direction. The outer elastic portion 320 may form a shape corresponding to the outer portion 420. The outer elastic portion 320 may include a fifth corner region to an eighth corner region. Each of the fifth to eighth corner regions of the outer elastic portion 320 may be arranged adjacent to each of the first to fourth corner regions of the inner elastic portion 310.

[0100] The outer elastic portion 320 may include a second coupling hole 322. The second coupling hole 322 may overlap with the fourth coupling hole 422 in the optical axis direction. The second coupling hole 322 may be formed to have a size corresponding to the size of the fourth coupling hole 422. The outer elastic portion 320 may be coupled to the stator 100. The second protrusion 122 may be inserted into the second coupling hole 322 of the outer elastic portion 320. The second protrusion 122 may be inserted and fixed to the second coupling hole 322 of the outer elastic portion 320. The outer elastic portion 320 may be fixed to the upper surface 120 of the fixing unit 100.

[0101] The outer elastic portion 320 may include a plurality of second coupling holes 322. The outer elastic portion 320 may include four second coupling holes 322. The four second coupling holes 322 may be spaced apart from each other. The four second coupling holes 322 may be respectively arranged in the corner regions of the outer elastic portion 320. The four second protrusions 122 may be respectively inserted into each of the four second coupling holes 322.

[0102] The substrate 300 may include a connecting elastic portion 330. The connecting elastic portion 330 may connect the inner elastic portion 310 and the outer elastic portion 320. The connecting elastic portion 330 may overlap with the connecting portion 430 in the optical axis direction. The connecting elastic portion 330 may be formed in a shape corresponding to the connecting portion 430. The connecting elastic portion 330 may be arranged in a space between the inner elastic portion 310 and the outer elastic portion 320. At least a portion of the connecting elastic portion 330 may be bent.

[0103] The connecting elastic portion 330 may include a plurality of connecting elastic portions 330. The connecting elastic portion 330 may include a first connecting elastic portion to a fourth connecting elastic portion. The first connecting elastic portion may connect a first corner region of the inner elastic portion 310 and a sixth corner region of the outer elastic portion 320. The second connecting elastic portion may connect a second corner region of the inner elastic portion 310 and a seventh corner region of the outer elastic portion 320. The third connecting elastic portion may connect a third corner region of the inner elastic portion 310 and an eighth corner region of the outer elastic portion 320. The fourth connecting elastic portion may connect a fourth corner region of the inner elastic portion 310 and a fifth corner region of the outer elastic portion 320.

[0104] The camera module 10 may include a reinforcement member 400. The reinforcement member 400 may have a higher rigidity than the substrate 300. The reinforcement member 400 may be arranged on the mover 500. The substrate 300 may be arranged on the reinforcement member 400. The reinforcement member 400 may be coupled to the stator 100 and the mover 500. The reinforcement member 400 may overlap with a local area of ​​the substrate 300 in the optical axis direction. The reinforcement member 400 may be formed in a shape corresponding to a local area of ​​the substrate 300. The reinforcement member 400 may be formed of a metal material. The reinforcement member 400 may be formed of a material heavier than the substrate 300. The reinforcement member 400 may include an outer portion 420 coupled to the stator 100, an inner portion 410 coupled to the mover 500, and a connecting portion 430 connecting the inner portion 410 and the outer portion 420. Thus, the reinforcement member 400 may be used to maintain the initial position of the mover 500 and simultaneously serve as an elastic member.

[0105] The reinforcement member 400 may include an inner portion 410. The inner portion 410 may be arranged in the central area of ​​the reinforcement member 400. The inner portion 410 may overlap with the inner elastic portion 310 in the optical axis direction. The inner portion 410 may be formed in a shape corresponding to the inner elastic portion 310. The inner portion 410 may be formed in a square plate shape. The inner portion 410 may include a first corner region to a fourth corner region. Each of the first corner region to the fourth corner region may be arranged adjacent to each of the fifth corner region to the eighth corner region of the outer portion 420.

[0106] The inner part 410 may include a third coupling hole 412. The third coupling hole 412 may overlap with the first coupling hole 312 in the optical axis direction. The third coupling hole 412 may be formed to have a size corresponding to the size of the first coupling hole 312. The inner part 410 may be coupled to the mover 500. The first protrusion 510 may be inserted into the third coupling hole 412 of the inner part 410. The first protrusion 510 may be inserted and fixed into the third coupling hole 412 of the inner part 410. The inner part 410 may be coupled to the lens module 200. The protrusion 202 may be inserted into the third coupling hole 412 of the inner part 410. The protrusion 202 may be inserted and fixed into the third coupling hole 412 of the inner part 410. The inner part 410 may move integrally with the lens module 200, the inner part 410 and the mover 500.

[0107] The inner part 410 may include a plurality of third coupling holes 412. The inner part 410 may include four third coupling holes 412. The four third coupling holes 412 may be spaced apart from each other. The four third coupling holes 412 may be respectively arranged in the corner regions of the inner part 410. The first protrusion 510 may be inserted into two of the four third coupling holes 412, and the protrusion 202 may be inserted into the remaining two third coupling holes.

[0108] The reinforcement member 400 may include an outer portion 420. The outer portion 420 may be spaced apart from the edge region of the inner portion 410. The outer portion 420 may have an inner portion 310 formed in a rectangular ring shape. The outer portion 420 may overlap with the outer elastic portion 320 in the optical axis direction. The outer portion 420 may be formed in a shape corresponding to the outer elastic portion 320. The outer portion 420 may include a fifth corner region to an eighth corner region. Each of the fifth to eighth corner regions of the outer portion 420 may be arranged adjacent to each of the first to fourth corner regions of the inner portion 410.

[0109] The outer portion 420 may include a fourth coupling hole 422. The fourth coupling hole 422 may overlap with the second coupling hole 322 in the optical axis direction. The fourth coupling hole 422 may be formed to have a size corresponding to the size of the second coupling hole 322. The outer portion 420 may be coupled to the stator 100. The second protrusion 122 may be inserted into the fourth coupling hole 422 of the outer portion 420. The second protrusion 122 may be inserted and fixed to the fourth coupling hole 422 of the outer portion 420. The outer portion 420 may be fixed to the upper surface 120 of the fixing unit 100.

[0110] The outer portion 420 may include a plurality of fourth coupling holes 422. The outer portion 420 may include four fourth coupling holes 422. The four fourth coupling holes 422 may be spaced apart from each other. The four fourth coupling holes 422 may be respectively arranged in the corner regions of the outer portion 420. The four second protrusions 122 may be respectively inserted into each of the four fourth coupling holes 422.

[0111] The reinforcement member 400 may include a connection portion 430. The connection portion 430 may connect the inner portion 410 and the outer portion 420. The connection portion 430 may overlap with the connection elastic portion 330 in the optical axis direction. The connection portion 430 may be formed in a shape corresponding to the connection elastic portion 330. The connection portion 430 may be arranged in a space between the inner portion 410 and the outer portion 420. At least a portion of the connection portion 430 may be bent.

[0112] The connecting portion 430 may include a plurality of connecting portions 430. The connecting portion 430 may include a first connecting elastic portion to a fourth connecting elastic portion. The first connecting elastic portion may connect a first corner region of the inner portion 410 and a sixth corner region of the outer portion 420. The second connecting elastic portion may connect a second corner region of the inner portion 410 and a seventh corner region of the outer portion 420. The third connecting elastic portion may connect a third corner region of the inner portion 410 and an eighth corner region of the outer portion 420. The fourth connecting elastic portion may connect a fourth corner region of the inner portion 410 and a fifth corner region of the outer portion 420.

[0113] The camera module 10 may include a mover 500. The mover 500 may be disposed inside the stator 100. The mover 500 may be disposed in the inner space 100 formed between the side surfaces of the stator 100. The mover 500 may be coupled to the substrate 300 and the reinforcement 400. The mover 500 may rotate with the substrate 300 and the reinforcement 400 relative to three different axes.

[0114] The mover 500 may include a groove 502 formed on the upper surface and a first protruding portion 510 protruding from the groove 502. The first protruding portion 510 may protrude higher than the upper surface of the mover 500. The upper end of the first protruding portion 510 may be arranged lower than the upper end of the second protruding portion 122. Thus, the range in which the mover 500 can rotate may be limited. The first protruding portion 510 of the mover 500 may be coupled to the inner elastic portion 310 of the substrate 300 and the inner portion 410 of the reinforcement 400. The first protruding portion 510 may be inserted into the first coupling hole 312 of the inner elastic portion 310 of the substrate 300 and the third coupling hole 412 of the inner portion 410 of the reinforcement 400. An adhesive such as epoxy resin may be disposed between the first protruding portion 510 and the first coupling hole 312 of the inner elastic portion 310 and between the first protruding portion 510 and the third coupling hole 412 of the inner portion 410. An adhesive such as epoxy may be disposed between the groove 502 of the mover 500 and the lower surface of the reinforcement 400. The first protrusion 510 may be inserted into and fixed to the first coupling hole 312 of the inner elastic portion 310 of the base plate 300 and the third coupling hole 412 of the inner portion 410 of the reinforcement 400.

[0115] The mover 500 may include a plurality of first protrusions 510. The mover 500 may include two first protrusions 510. The two first protrusions 510 may be spaced apart from each other. Each of the two first protrusions 510 may be formed to have shapes corresponding to each other in positions symmetrical to each other with respect to the optical axis of the lens module 200. The two first protrusions 510 may be arranged to be spaced apart from the two protrusions 202. The angle formed by the virtual straight line connecting the two first protrusions 510 and the virtual straight line connecting the two first protrusions 202 may be a right angle.

[0116] The mover 500 may include a seating groove 522 formed on the outer surface. The area where the seating groove 522 is arranged in the outer surface of the mover 500 may be formed as a curved surface 520. The curved surface 520 area and the seating groove 522 of the mover 500 may be formed at a position facing the curved surface 132 area of ​​the stator 100. The seating groove 522 of the mover 500 may have a guide ball 600 arranged between the curved surface 132 areas of the stator 100. At least a portion of the guide ball 600 may be seated in the seating groove 522 of the mover 500. The inner side surface of the seating groove 522 of the mover 500 may be formed in a curved shape. Thus, the guide ball 600 can guide the rotation of the mover 500 relative to three different axes. Four curved surface areas and the seating groove 522 in the curved surface 520 area of ​​the mover 500 may be formed in each corner area of ​​the mover 500.

[0117] The camera module 10 may include a guide ball 600. The guide ball 600 may be arranged between the stator 100 and the mover 500. The guide ball 600 may be formed in a spherical shape. The cross section of the guide ball 600 may be formed in an elliptical shape. The guide ball 600 may be arranged between a corner area of ​​the inner side surface 130 of the stator 100 and a corner area of ​​the mover 500. At least a portion of the guide ball 600 may be arranged in the seating groove 522. The guide ball 600 makes it possible to guide the rotation of the mover 500 relative to three different axes relative to the stator 100.

[0118] The camera module 10 may include a second drive unit 700. The second drive unit 700 may be arranged on the mover 500. The second drive unit 700 may be arranged at a lower portion of the mover 500. The second drive unit 700 may be arranged on a lower surface of the mover 500. The second drive unit 700 may face the first drive unit. The second drive unit 700 enables the mover 500 to rotate relative to the stator 100 relative to three different axes through electromagnetic interaction with the first drive unit 800.

[0119] The second driving unit 700 may include first to fourth magnets 710, 720, 730, and 740. The first to fourth magnets 710, 720, 730, and 740 may have a 2×2 arrangement. For example, the second magnet 720 is arranged on the right side of the first magnet 710, the third magnet 730 is arranged below the first magnet 710, and the fourth magnet 740 may be arranged on the diagonal line of the first magnet 710. The mutually adjacent regions of the first magnet 710 and the third magnet 730 may be magnetized to a first polarity. The mutually spaced regions of the first magnet 710 and the third magnet 730 may be magnetized to a second polarity.

[0120] The regions adjacent to each other of the second magnet 720 and the fourth magnet 740 may be magnetized to the first polarity. The regions spaced apart from each other of the second magnet 720 and the fourth magnet 740 may be magnetized to the second polarity. In the first embodiment of the present invention, the first to fourth magnets 710, 720, 730 and 740 are described as examples in which they have the same size as each other, but the first to fourth magnets 710, 720, 730 and 740 may have different sizes, or some of the first to fourth magnets 710, 720, 730 and 740 may have the same size.

[0121] The region magnetized to the first polarity among the first to fourth magnets 710, 720, 730, and 740 may face the first coil unit 810. The region magnetized to the first polarity among the first to fourth magnets 710, 720, 730, and 740 may overlap with the first coil unit 810 in the optical axis direction. Through the electromagnetic interaction between the region magnetized to the first polarity among the first to fourth magnets 710, 720, 730, and 740 and the first coil unit 810, the mover 500 may rotate relative to the first axis.

[0122] The region magnetized to the second polarity among the first to fourth magnets 710, 720, 730, and 740 may face the second coil unit 820. The region magnetized to the second polarity among the first to fourth magnets 710, 720, 730, and 740 may overlap with the second coil unit 820 in the optical axis direction. Through the electromagnetic interaction between the region magnetized to the second polarity among the first to fourth magnets 710, 720, 730, and 740 and the second coil unit 820, the mover 500 may rotate relative to a second axis perpendicular to the first axis.

[0123] The first to fourth magnets 710, 720, 730, and 740 may face the third coil unit 830. Regions of the first to fourth magnets 710, 720, 730, and 740 magnetized to the second polarity may face the third coil unit 830. The first to fourth magnets 710, 720, 730, and 740 may not overlap with the third coil unit 830 in the optical axis direction. Through the electromagnetic interaction of the first to fourth magnets 710, 720, 730, and 740 with the third coil unit 830, the mover 500 may rotate relative to a third axis perpendicular to the first axis and the second axis.

[0124] The camera module 10 may include a first drive unit 800. The first drive unit 800 may be arranged on the stator 100. The first drive unit 800 may be arranged on the bottom surface of the inner side surface of the stator 100. The first drive unit 800 may face the second drive unit 700. The first drive unit 800 may rotate the mover 500 relative to three different axes through electromagnetic interaction with the second drive unit 700. The first drive unit 800 may include a first coil unit 810, a second coil unit 820, and a third coil unit 830.

[0125] The first coil unit 810 may face the region magnetized to the first polarity in the first to fourth magnets 710, 720, 730, and 740. The first coil unit 810 may overlap with the region magnetized to the first polarity in the optical axis direction in the first to fourth magnets 710, 720, 730, and 740. The first coil unit 810 may include a first coil 812 and a second coil 814. The first coil 812 and the second coil 814 may have sizes corresponding to each other. The first coil 812 and the second coil 814 may be formed in a rectangular ring shape. Through the electromagnetic interaction of the first coil 812 and the second coil 814 with the region magnetized to the first polarity in the first to fourth magnets 710, 720, 730, and 740, the mover 500 may rotate relative to the first axis.

[0126] The second coil unit 820 may face the region magnetized to the second polarity in the first to fourth magnets 710, 720, 730, and 740. The second coil unit 820 may overlap with the region magnetized to the second polarity in the optical axis direction in the first to fourth magnets 710, 720, 730, and 740. The second coil unit 820 may include a third coil 822 and a fourth coil 824. The third coil 822 may be arranged on one side of the first coil 812 and the second coil 814. The fourth coil 824 may be arranged on one side of the first coil 812 and the second coil 814. The third coil 822 and the fourth coil 824 may be formed in a rectangular ring shape. The length of the third coil 822 and the fourth coil 824 in the first direction is shorter than the length of the first coil 812 and the second coil 814 in the first direction, and the length of the third coil 822 and the fourth coil 824 in the second direction perpendicular to the first direction may be longer than the length of the first coil 812 and the second coil 814 in the second direction. The mover 500 may rotate about a second axis perpendicular to the first axis through electromagnetic interaction between regions magnetized to the second polarity among the first to fourth magnets 710 , 720 , 730 , and 740 and the second coil unit 820 .

[0127] The third coil unit 830 may face the first to fourth magnets 710, 720, 730, and 740. The third coil unit 830 may face the region of the first to fourth magnets 710, 720, 730, and 740 that is magnetized to the second polarity. The third coil unit 830 may not overlap with the first to fourth magnets 710, 720, 730, and 740 in the optical axis direction. The third coil unit 830 may include a fifth coil 832 and a sixth coil 834. The fifth coil 832 may be arranged on one side of the third coil 822. The sixth coil 834 may be arranged on the other side of the fourth coil 824. The fifth coil 832 may be arranged to face the region of the first magnet 710 and the second magnet 720 that is magnetized to the second polarity. The sixth coil 834 may be arranged to face the region of the third magnet 730 and the fourth magnet 740 that is magnetized to the second polarity. The mover 500 can rotate about a third axis perpendicular to the first axis and the second axis through electromagnetic interaction between the third coil unit 830 and the first to fourth magnets 710, 720, 730 and 740. The rotation angles of the first axis, the second axis and the third axis can be between -1 degree and +1 degree, respectively, but are not limited thereto.

[0128] In the first embodiment of the present invention, the first axis may represent the x-axis, the second axis may represent the y-axis, and the third axis may represent the z-axis, but is not limited thereto.

[0129] According to the camera module 10 of the first embodiment of the present invention, the lens module 300 and the image sensor arranged on the substrate can be rotated about three different axes to achieve a hand shake correction function. In this case, since the substrate 300 and the reinforcing member 400 can be used as an elastic member through the material and / or structural characteristics, the size of the product can be reduced and the cost can be reduced.

[0130] As mentioned above, reference has been made Figures 1 to 12 A camera module according to a first embodiment of the present invention is described. Hereinafter, a camera module according to a second embodiment of the present invention will be described with reference to FIGS. 13 to 23. The detailed description of the camera module according to the second embodiment of the present invention is based on the camera module according to the first embodiment of the present invention and the name, terminology and function and the detailed description of each embodiment, and they may be the same as or different from each other.

[0131] Fig.13a is a conceptual diagram of OIS by lens shift method in a conventional camera module, and Fig.13b is a conceptual diagram of OIS by a lens tilt method in a conventional camera module.

[0132] Reference Fig.13aIn the case of the conventional lens shift method, according to the movement of the lens Ls, as the optical axis Z, which is a reference to the point with the highest spatial resolution value in the image sensor IS, repeatedly moves from Z1 to Z2 and from Z2 to Z1, the distortion of the video becomes obvious, and the distortion of the video even makes the user and others feel nauseous.

[0133] Furthermore, the video distortion problem in the lens-shift method also occurs in the sensor-shift method.

[0134] Next, refer to Fig.13b In the case of the conventional lens tilt method, the optical axis Z repeatedly moves from Z1 to Z2 according to the tilt of the lens Ls, and as a result, the distance between the lens Ls and the image sensor IS changes, and as the optical axis Z, which is a reference for the spatial resolution value, repeatedly moves from Z1 to Z2 and from Z2 to Z1, the distortion of the moving image becomes more significant.

[0135] The video distortion problem in the lens tilt method is also a problem in the sensor tilt method.

[0136] Fig.14a is a plan view illustrating a camera module 1000 according to a second embodiment of the present invention, and Fig.14b is based on Fig.14a The illustrated embodiment is an exploded perspective view of a camera module 1000 according to a second embodiment of the present invention.

[0137] Reference Fig.14a and Fig.14b , the camera module 1000 according to the second embodiment of the present invention may include any one or more of the sensor unit 1100 , the lens unit 1200 , the actuator 1300 , and the cover 1400 .

[0138] Reference Fig.14b In an embodiment, a direction parallel to the optical axis of light may be referred to as a z-axis, a plane perpendicular to the optical axis may be referred to as an xy plane, and in the xy plane, the x-axis and the y-axis may be defined as directions perpendicular to each other, but are not limited thereto. At this time, the x-axis may be defined as a horizontal coordinate axis, and the y-axis may be defined as a vertical coordinate axis, but are not limited thereto.

[0139] The movement of the camera module may mainly include linear movement moving along an axis and rotational movement rotating about an axis.

[0140] like Fig.14b As shown, the above-mentioned linear movement may include movement of the camera module in the horizontal coordinate axis (x-axis) direction, movement of the camera module in the vertical coordinate axis (y-axis) direction, and movement of the camera module in the optical axis (z-axis) direction arranged along the front-to-back direction.

[0141] Next, if Fig.14b As shown, the rotational motion may include: pitch, which indicates a vertical rotational motion using the horizontal coordinate axis (x-axis) of the camera module as the rotation axis; yaw, which indicates a rotational motion in the left-right direction using the vertical coordinate axis (y-axis) of the camera module as the rotation axis; and roll, which indicates a rotational motion using the optical axis (z-axis) of the camera module passing along the front-back direction as the rotation axis. Pitch and yaw may be rotations in the x-axis or y-direction.

[0142] The camera module according to the embodiment may be applied to the front or rear of the mobile phone, or to both the bottom and rear of the mobile phone.

[0143] Reference Fig.14b In an embodiment, the lens unit 1200 and the actuator 1300 may be arranged inside the cover 1400. The cover 1400 may be referred to as a cover housing or a shielding can. The cover 1400 may be formed of a metal material such as steel (SUS), etc., and may shield electromagnetic waves flowing into and out of the camera module, and may also prevent foreign matter from flowing into the camera module.

[0144] Next, Fig.15a yes Fig.14b A perspective view of an actuator 1300 in a camera module according to a second embodiment of the present invention is illustrated in FIG. Fig.15b is based on Fig.15a FIG. 2 is an exploded perspective view of an actuator 1300 in a camera module according to a second embodiment of the present invention.

[0145] Reference Fig.15a and Fig.15b In a camera module according to a second embodiment of the present invention, the actuator 1300 may include a rotor 1310, a base 1320 on which the rotor 1310 is arranged, a ball 1316 arranged between the rotor 1310 and the base 1320, a first driving unit 1311M arranged in the rotor 1310, and a second driving unit 1322C arranged in the base 1320.

[0146] Furthermore, in the camera module according to the second embodiment of the present invention, the actuator 1300 may include an upper spring 1350 disposed to contact the upper side and the base of the rotor.

[0147] For example, Fig.15c is based on Fig.15a A detailed view of the upper spring 1350 in the camera module of the second embodiment of the present invention is shown in FIG. Fig.16 yes Fig.15b A perspective view of the rotor 1310 and the first drive unit 1311M in the actuator shown in FIG. Fig.17 yes Fig.15b 0046] A perspective view of the base 1320 and the second drive unit 1322C in the actuator shown in FIG.

[0148] First, about Fig.15c and Fig.15a The upper spring 1350 is described.

[0149] The rotor 1310 and the base 1320 may be connected by an upper spring 1350 , and an initial position of the lens unit 1200 may be set by preloading of the upper spring 1350 .

[0150] The upper spring 1350 may include an outer supporting portion 1351 , a spring portion 1352 , and an inner supporting portion 1353 .

[0151] For example, the upper spring 1350 may include an outer supporting portion 1351 , a spring portion 1352 connected to an inner portion of the outer supporting portion 1351 , and an inner supporting portion 1353 connected to an inner portion of the spring portion 1352 .

[0152] The outer support portion 1351 may be fixed to the base 1320 , and the inner support portion 1353 may be fixed to the rotor 1310 .

[0153] Meanwhile, in another embodiment, the initial position of the lens unit 1200 may be set between the rotor 1310 and the base 1320 by a predetermined magnetic force.

[0154] Furthermore, in an embodiment, an open-loop driving method may be performed using the upper spring 1350 .

[0155] Next, Fig.16 yes Fig.15b A perspective view of the rotor 1310 and the first drive unit 1311M in the actuator shown in FIG. Fig.17 yes Fig.15b 0046] A perspective view of the base 1320 and the second drive unit 1322C in the actuator shown in FIG.

[0156] The camera driving apparatus of the embodiment may include a rotor 1310 that supports and drives the lens unit 1200 , a base 1320 that accommodates the rotor 1310 , a first driving unit 1311M that drives the rotor 1310 , and a second driving unit 1322C.

[0157] The camera driving device may move the lens unit 1200 coupled to the rotor 1310 in pitch, yaw, and roll with respect to the x-axis, the y-axis, and the z-axis.

[0158] For example, the rotor 1310 supports the configuration of the lens unit 1200 and the first driving unit 1311M, such as a magnet, etc., and pitch, yaw, and roll operations may be performed together with the AF function of the lens unit 1200 .

[0159] The base 1320 accommodates the rotor 1310 , but the base 1320 may be a fixed unit for performing pitch, yaw, and roll operations of the lens unit 1200 through the rotor 1310 .

[0160] Specifically, refer to Fig.16 In an embodiment, the rotor 1310 may include a first accommodation portion therein, and the lens unit 1200 may be disposed on the first accommodation portion.

[0161] The ball receiving portion 1315 may be provided at an outer corner of the first bracket 1311 of the rotor 1310 , and the ball 1316 may be disposed on the ball receiving portion 1315 .

[0162] For example, the first protrusion 1314P may be formed at four outer corners of the first bracket 1311, the ball receiving portions 1315 may be fixed by the first protrusions 1314P, respectively, and a total of four balls 1316 may be arranged, with one ball in each of the four outer corners, but is not limited thereto.

[0163] Furthermore, in an embodiment, there is the following technical effect: when the rotor 1310 is driven, the first protrusions 1314P at the four corners of the outer side of the first bracket 1311 can act as stoppers in the corner direction of the base 1320 or the shake fixing unit.

[0164] For example, in an embodiment, there is the following special technical effect: when the yaw or pitch of the rotor 1310 is driven, the first protrusion 1314P of the first bracket 1311 can act as a stopper in the corner direction of the base 1320 or the shake fixing unit.

[0165] Temporary reference Fig.21 In an embodiment, the rotor 1310 has a ball receiving portion 1315 at an outer corner thereof, and a cross-section of the ball receiving portion 1315 may include a first rounded surface 1310R.

[0166] Next, return to the reference Fig.16 , the first coupling protrusion 1313 may be formed on an upper side of the first bracket 1311 , and the first coupling protrusion 1313 may be fixed to the inner support portion 1353 of the upper spring 1350 .

[0167] Next, the first bracket 1311 may have a first recess 1312R on an outer side of a sidewall. In addition, embodiments may include a first driving unit 1311M disposed in the rotor 1310 .

[0168] For example, the first bracket 1311 may include a first recess 1312R on an outer side of the sidewall, and the first driving unit 1311M may be disposed in the first recess 1312R. The first driving unit 1311M may be a magnet driving unit such as a permanent magnet, but is not limited thereto.

[0169] The first driving unit 1311M may be a magnet driving unit, and may be disposed on outer sides of four side surfaces of the first bracket 1311 .

[0170] A pair of first driving units facing each other among the first driving units 1311M may be pitch magnets, and the remaining pair of first driving units facing each other may be yaw magnets, but are not limited thereto.

[0171] Next, refer to Fig.17 In an embodiment, the base 1320 includes a second rounded surface 1324R corresponding to the first rounded surface 1310R at an inner corner, and the ball 1316 may be disposed between the first rounded surface 1310R of the rotor and the second rounded surface 1324R of the base.

[0172] The base 1320 accommodates the rotor 1310 , but the base 1320 may be a fixed unit for performing pitch, yaw, and roll operations of the lens unit 1200 through the rotor 1310 .

[0173] To this end, the embodiment may include a second driving unit 1322C disposed in the base 1320. The second driving unit 1322C may be a coil driving unit.

[0174] For example, the second driving unit 1322C may include the second bracket 1321 and be provided with a through hole 1322H passing through a side wall of the first bracket 1321, and the second driving unit 1322C may be disposed in the through hole 1322H.

[0175] A pair of second driving units facing each other among the second driving units 1322C may be pitch coils, and the remaining pair of second driving units facing each other may be yaw coils, but are not limited thereto.

[0176] Furthermore, in the embodiment, the base 1320 is provided with the second recess 1323R on the outer side of the corner, so that precision injection can be performed and miniaturization is facilitated, and the operation speed can be improved according to the weight reduction.

[0177] Next, Fig.18 yes Fig.15b An exemplary view of the operation of the base 1320 in the actuator is shown in FIG.

[0178] The second rounded surface 1324R of the base 1320 of the embodiment may allow the ball 1316 to move by rolling in the first direction DR1 and the second direction DR2.

[0179] For example, the lens unit 1200 rotationally moves along the first and second rounded surfaces 1310R and 1324R relative to the optical axis, and the lens unit 1200 may move by tilting vertically and horizontally relative to the optical axis along the first and second rounded surfaces 1310R and 1324R.

[0180] The embodiment is a tilt method of the entire module including the lens and the image sensor, and the correction range is wider than the lens shift method, and since the optical axis of the lens and the axis of the image sensor are not tilted, there is a unique technical effect of minimizing and eliminating image distortion.

[0181] Therefore, through the driving device of the camera module according to the embodiment and the camera module including the same, there is a technical effect that an excellent OIS function can be provided without image distortion even when shooting a video.

[0182] In our previous technology, although the rotational drive of the lens is achieved, the previous technology is limited to the level that can be rotationally driven in one direction, such as a direction parallel to or perpendicular to the Z axis as the optical axis.

[0183] On the other hand, in the camera driving apparatus according to the embodiment, there is a technical effect of being able to rotate in multiple directions.

[0184] For example, the lens unit 1200 rotationally moves relative to the optical axis along the first and second rounded surfaces 1310R and 1324R, and the lens unit 1200 may move by tilting vertically and horizontally relative to the optical axis along the first and second rounded surfaces 1310R and 1324R.

[0185] That is to say, Fig.18 As shown, the second rounded surface 1324R of the base 1320 may be formed to be wider than the first rounded surface 1310R of the rotor 1310 .

[0186] In addition, the second rounded surface 1324R of the base 1320 and the first rounded surface 1310R of the rotor 1310 are arranged in an inclined direction so that the rounded surface direction intersects with the Z axis, thereby creating a special technical effect that the rotor 1310 can rotate in multiple directions.

[0187] Next, Fig.19a yes Fig.14b 1 is a perspective view of a lens unit 1200 and a sensor unit 1100 in a camera module according to a second embodiment of the present invention, and Fig.19b yes Fig.19a Exploded three-dimensional diagram.

[0188] Reference Fig.19b In an implementation, the sensor unit 1100 may include a substrate unit 1110 , an image sensor 1120 , and a reinforcement member 1130 .

[0189] For example, in an implementation, the sensor unit 1100 may include a substrate unit 1110 , an image sensor 1120 disposed on the substrate unit 1110 to overlap with the lens unit 1200 , and a reinforcement member 1130 disposed under the substrate 1110 .

[0190] The image sensor 1120 may include a solid-state imaging device such as a complementary metal oxide semiconductor image sensor (CMOS) or a charge coupled device (CCD) and an analog-to-digital conversion unit that converts and outputs an analog electrical signal output from the solid-state image sensor into a digital value.

[0191] The reinforcement member 1130 disposed at the lower side of the substrate unit 1110 may perform a function of a reinforcement member to increase the strength and rigidity of the substrate unit 1110 .

[0192] Next, Fig. 20 yes Fig.19b An enlarged view of the substrate unit 1110 is shown in FIG.

[0193] In an implementation, the substrate 1110 may include a rigid PCB, a flexible PCB, and all boards having wiring patterns that can be electrically connected such as a rigid flexible PCB.

[0194] For example, in an implementation, the substrate 1110 may include a first circuit board 1111 , a second circuit board 1112 , and a third circuit board 1113 .

[0195] For example, the substrate 1110 may include a first circuit board 1111 on which the actuator 1300 is arranged, a second circuit board 1112 extending in one direction from the first circuit board 1111 and on which a control semiconductor chip (not shown) is arranged, and a third circuit board 1113 extending toward one side from the second circuit board 1112 and electrically connected to a predetermined main circuit board (not shown).

[0196] The first circuit board 1111 may include a first-first circuit board 1111 a , a first-second circuit board 1111 b , and a first-third circuit board 1111 c .

[0197] For example, the first circuit board 1111 may include a first-first circuit board 1111a arranged on an outer portion and extending from the second circuit board 1112, a first-second circuit board 1111b extending from the first-first circuit board 1111a toward the inside and having elasticity, and a first-third circuit board 1111c connected to the inner side of the first-second circuit board 1111b and arranged with an image sensor 1120.

[0198] For example, refer to Fig. 20 , the first-first circuit board 1111a may be a rigid printed circuit board, the first-second circuit board 1111b may be a flexible PCB or a rigid-flexible PCB, and the first-third circuit board 1111c may be a rigid circuit board, but are not limited thereto.

[0199] At this time, the first-second circuit board 1111 b may be arranged in a bent shape in the form of a flexible circuit board.

[0200] The first-first circuit board 1111 a may be fixed to the base 1320 , and the first-third circuit board 1111 c may be electrically connected to the image sensor 1120 , but are not limited thereto.

[0201] Furthermore, embodiments may include a gyro sensor (not shown) disposed on the substrate unit 1110 to detect motion, and a driving circuit element (not shown) for driving the actuator 1300 according to an input / output signal of the gyro sensor.

[0202] In an embodiment, the gyro sensor may adopt a two-axis gyro sensor that detects two rotational motion quantities, namely pitch and yaw, thereby indicating a large motion in a two-dimensional image frame, and for more accurate image stabilization, a three-axis gyro sensor that detects both pitch, yaw and roll motions may be adopted. The motions corresponding to pitch, yaw and roll detected by the gyro sensor may be converted into appropriate physical quantities according to the hand shake correction method and correction direction.

[0203] Next, Fig.21 is along the basis Fig.14a 2 is a cross-sectional view taken along line A1 - A1 ′ of the camera module of the embodiment illustrated in FIG.

[0204] Refer to Fig.21 , Fig.16 and Fig.17According to an embodiment, a camera module may include: a rotor 1310, which includes a first chamfered surface 1310R located at an outer corner and moving together with a first accommodating portion; a base 1320, which includes a second chamfered surface 1324R located at an inner corner corresponding to the first chamfered surface 1310R, and the rotors 1310 are spaced apart from each other in the second accommodating portion; a ball 1316, which is arranged between the first chamfered surface 1310R of the rotor 1310 and the second chamfered surface 1324R of the base 1320; a first driving unit 1311M, which is arranged in the rotor 1310; and a second driving unit 1322C, which is arranged in the base 1320.

[0205] According to an embodiment, the posture may be controlled by using the rolling of the ball 1316 , and the rolling of the ball 1316 may also be used to prevent vibration applied from the upper spring 1350 .

[0206] In addition, according to an embodiment, the driving force may be improved by arranging the first driving unit 1311M, which is a magnet driving unit, and the second driving unit 1322C, which is a coil driving unit, to face each other.

[0207] In an embodiment, the lens unit 1200 may include a predetermined lens barrel 1220 and a lens 1210. The lens 1210 may include a single lens or a plurality of lenses. For example, the lens 1210 may include a first lens 1211, a second lens 1212, and a third lens 1213. The lens 1210 may include a liquid lens. For example, the first lens 1211 and the third lens 1213 may be solid lenses, and the second lens 1212 may be a liquid lens, but is not limited thereto. For example, in the second lens 1212, the lens liquid may be arranged between predetermined frames, and the curvature of the lens liquid may be controlled by predetermined electrodes, but is not limited thereto.

[0208] In an embodiment, a lens actuator (not shown) capable of driving the lens unit 1200 may be arranged. The lens actuator may be a voice coil motor, a microactuator, a silicon actuator, a shape memory alloy (SAM), etc., and the lens actuator may be applied in various ways such as an electrostatic method, a thermal method, a bimorph method, an electrostatic force method, a piezoelectric actuator, etc., but is not limited thereto.

[0209] For example, according to an embodiment, the lens actuator enables the lens unit 1200 to move the lens up and down in response to a control signal from a predetermined control unit, thereby performing an auto focus function.

[0210] The lens unit 1200 may include a voice coil motor, a MEMS actuator, and a piezoelectric actuator to move the lens up and down, and another embodiment may include a liquid lens in addition to the lens without a separate actuator.

[0211] Voice coil motors move the entire lens of a lens module up and down, MEMS and piezoelectric actuators move some lenses of a lens module up and down, and liquid lenses can be used to adjust the focus by changing the curvature of the interface between the two liquids.

[0212] According to an embodiment, OIS may be implemented by module tilt caused by the rotor 1310 , the first driving unit 1311M, and the second driving unit 1322C, and AF may be implemented using a variable lens.

[0213] For example, the variable lens may be a variable focus lens. In addition, the variable lens may be a lens whose focus is adjusted. The variable lens may be at least one of a liquid lens, a polymer lens, a liquid crystal lens, a VCM type, and an SMA type.

[0214] The liquid lens may include a liquid lens containing one liquid and a liquid lens containing two liquids. The liquid lens containing one liquid may change the focus by adjusting a membrane arranged at a position corresponding to the liquid, and for example, may change the focus by pressing the membrane by the electromagnetic force of a magnet and a coil.

[0215] The liquid lens including two liquids may control an interface between a conductive liquid and a non-conductive liquid by using a voltage applied to the liquid lens including the conductive liquid and the non-conductive liquid.

[0216] The polymer lens can change the focus of the polymer material by a driving unit such as piezoelectric. The liquid crystal lens can change the focus by controlling the liquid crystal by electromagnetic force. The VCM type can change the focus by adjusting the solid lens or the lens assembly including the solid lens by means of the electromagnetic force between the magnet and the coil. In the SMA type, the focus can be changed by controlling the solid lens or the lens assembly including the solid lens using a shape memory alloy.

[0217] Continue to refer to Fig.21 In an embodiment, the direction of the first rounded surface 1310R of the rotor 1310 or the direction of the second rounded surface 1324R of the base 1320 may be a direction intersecting with the direction of the optical axis Z.

[0218] For example, in an embodiment, the direction of the first rounded surface 1310R of the rotor 1310 may be a cross direction that is not parallel to the direction of the optical axis Z. For example, the direction of the first rounded surface 1310R of the rotor 1310 may be inclined relative to the optical axis Z.

[0219] In addition, the direction of the second rounded surface 1324R of the base 1320 may be a cross direction that is not parallel to the direction of the optical axis Z. For example, the direction of the second rounded surface 1324R of the base 1320 may be inclined relative to the optical axis Z.

[0220] The lens unit 1200 rotationally moves with respect to the optical axis along the first and second rounded surfaces 1310R and 1324R, and the lens unit 1200 may move by tilting vertically and horizontally with respect to the optical axis along the first and second rounded surfaces 1310R and 1324R.

[0221] The embodiment is a method of moving the entire module including the lens and the image sensor, and the correction range is wider than the lens moving method, and since the optical axis of the lens and the axis of the image sensor are not offset, there is a unique technical effect of minimizing and eliminating image distortion.

[0222] Therefore, through the driving device of the camera module according to the embodiment and the camera module including the same, there is a technical effect that an excellent OIS function can be provided without image distortion even during video shooting.

[0223] Although our previous technology can perform rotational driving in one direction such as a direction parallel to or perpendicular to the Z axis which is the optical axis, in the camera driving device according to the embodiment, there is a technical effect of being able to rotate in multiple directions.

[0224] For example, the lens unit 1200 rotationally moves relative to the optical axis along the first and second rounded surfaces 1310R and 1324R, and the lens unit 1200 may move by tilting vertically and horizontally relative to the optical axis along the first and second rounded surfaces 1310R and 1324R.

[0225] In addition, the second rounded surface 1324R of the base 1320 and the first rounded surface 1310R of the rotor 1310 are arranged in an inclined direction so that the rounded surface direction intersects the Z axis, thereby creating a special technical effect that the rotor 1310 can rotate in multiple directions.

[0226] Reference Fig.21 and Fig.18 In an embodiment, the lens unit 1200 is rotationally moved along the first rounded surface 1310R and the second rounded surface 1324R relative to the optical axis, and the lens unit 1200 can be moved by tilting up, down, left, and right relative to the optical axis Z along the first rounded surface 1310R and the second rounded surface 1324R.

[0227] Next, Fig. 22 is along the basis Fig.14a2 is a cross-sectional perspective view taken along line A2 - A2 ′ of the camera module of the embodiment illustrated in FIG. 1 , wherein the tilt angle is 0°.

[0228] Therefore, if Fig.23a and Figure 23b As shown, an embodiment is a method of moving an entire module including a lens and an image sensor, which has a wider correction range than a lens moving method, and because the optical axis of the lens and the axis of the image sensor are not tilted, there is a unique technical effect of minimizing and eliminating image distortion.

[0229] According to an embodiment, a rotation angle of about ±0.8° to ±2.0° may be ensured by a method of driving the entire module including the lens and the image sensor, and thus, an effective OIS function may be performed.

[0230] For example, Fig.23a The diagram is based on Fig. 22 An example diagram of a first operation of the camera module of the embodiment illustrated in , wherein the tilt angle is ±1°.

[0231] also, Figure 23b The diagram is based on Fig. 22 A second exemplary view of a second operation of the camera module of the embodiment illustrated in , wherein the tilt angle is ±2°.

[0232] Typically, depending on the implementation, the rotation angle required when shooting a video while walking is ±1°, but by moving the entire module including the lens and the image sensor, a rotation angle of up to ±2° can be achieved, making the correction range wider than the lens shift method, and since the optical axis of the lens and the axis of the image sensor do not tilt even when shooting a video while running, there is a unique technical effect of minimizing image deformation without image distortion.

[0233] Furthermore, the embodiment has a technical effect of providing an excellent OIS function without image distortion, and at the same time has a technical effect of providing a miniature camera module.

[0234] The technical effects of the embodiments are not limited to the contents described in this specification, and include those determined from the illustrations of the present invention.

[0235] The modified embodiment according to the present embodiment may include some components of the first embodiment and some components of the second embodiment. That is, the modified embodiment may include the first embodiment, but some configurations of the first embodiment may be omitted, and the modified embodiment may include some configurations of the corresponding second embodiment. Alternatively, the modified embodiment may include the second embodiment, but some components of the second embodiment are omitted, and the modified embodiment includes some components of the corresponding first embodiment.

[0236] The features, structures, effects, etc. described in the above embodiments are all included in at least one embodiment of the present invention, and are not necessarily limited to one embodiment. In addition, the features, structures, effects, etc. shown in the embodiments can be combined or modified by a person skilled in the art of the embodiment relative to other embodiments. Therefore, the contents related to these combinations and modifications should be understood to be included in the scope of the present invention.

[0237] In addition, the above description has been made with respect to the embodiments, which are merely examples and are not intended to limit the embodiments, and it will be understood by those skilled in the art that various modifications and applications not shown above are possible without departing from the basic features of the present embodiments. For example, each component specifically shown in the embodiments may be modified. And the differences associated with such modifications and applications must be interpreted as being included within the scope of the invention defined in the appended claims.

Claims

1. A camera module, comprising: stator; A mover, wherein the mover is arranged inside the stator; a first drive unit, wherein the first drive unit is arranged on the stator; a second driving unit, the second driving unit being arranged on the mover and facing the first driving unit; a reinforcement member including an outer portion coupled to the stator, an inner portion coupled to the mover, and a connection portion connecting the outer portion and the inner portion; a base plate coupled to the stator and the mover and arranged on the reinforcement member; as well as A lens module is coupled to the substrate.

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