Lens driving device and camera module including the same

Abstract

To reduce power, miniaturize, and improve reliability of a lens driving device and a camera module including the lens driving device.SOLUTION: The lens driving device comprises: a housing 140; a bobbin 110 in the housing; a first coil 120 disposed on the bobbin; a first sensor 170 in the housing; a first magnet disposed in the housing and facing the first coil; a circuit board 250 disposed under the first magnet and including a second coil facing the first magnet; an upper elastic member 150 disposed to an upper portion of the housing; and a support member 220 connecting the upper elastic member and the circuit board. The housing includes first and second corner regions. The support member includes first to fourth wires. The first and second wires are arranged in the first corner region, and the third and fourth wires are arranged in the second corner region. The upper elastic member includes first to fourth upper elastic members. Part of the first and second upper elastic members are arranged in the first corner region, and part of the third and fourth upper elastic members are arranged in the second corner region.SELECTED DRAWING: Figure 2

Description

[Technical field]

[0001] The embodiment relates to a lens driving device and a camera module including the same. [Background technology]

[0002] As various mobile terminals become more widely used and wireless Internet services become more commercially available, Consumer demands for mobile terminals are becoming more diverse. is attached to the mobile terminal.

[0003] In this case, you can take photos or videos of the subject, save the image data, and then use it as needed. A typical example of a module that can edit and transmit the image is a camera module.

[0004] In recent years, personal computers, camera phones, PDAs, smartphones, toys and a wide variety of multimedia fields, including surveillance cameras and video tape recorders. Demand for small camera modules for image input devices such as information terminals is increasing.

[0005] The ultra-compact, low-power camera module can be used in place of conventional camera modules. The Voice Coil Motor (VCM) technology used in It is difficult to apply the technique, and research into this issue is actively ongoing.

[0006] In the case of camera modules mounted on small electronic products such as smartphones, The camera module is frequently subjected to shocks, and camera shake can cause minor camera shake. In light of this, in recent years, cameras have been equipped with anti-shake measures. Further development of attachment techniques to laser modules is required.

[0007] Various methods for preventing camera shake are being researched. One of them is the optical module. The camera is moved in the x-axis and y-axis directions on a plane perpendicular to the optical axis to correct camera shake. In this technology, the optical system is aligned on a plane perpendicular to the optical axis for image correction. Since adjustment is performed internally, the structure is complex and not suitable for miniaturization.

[0008] There is also a demand for accurate and fast focusing of the optical module. Summary of the Invention [Problem to be solved by the invention]

[0009] The embodiment includes an inexpensive sensor that can accurately sense bobbin displacement, thus saving power. Patent application title: LENS DRIVER FOR MINIATURE REDUCTION AND IMPROVED RELIABILITY AND CAMERA MODULE INCLUDING THE SAME to provide. [Means for solving the problem]

[0010] The lens driving device according to the embodiment has at least one lens attached to the inside and a periphery a bobbin having a first coil attached to a surface of the bobbin facing the first coil; A first magnet disposed around the circumference; a housing supporting the first magnet; upper and lower elastic members coupled to the bobbin and the housing; a first sensor for detecting the position; a second magnet disposed to face the first sensor; a base disposed at a fixed distance from said housing; and a pair of said first magnets. a second coil arranged to face the first coil; a circuit board on which the second coil is mounted; The housing is supported to be movable relative to the base in second and third directions perpendicular to the first direction. and a plurality of supports connecting at least one of the upper and lower elastic members to the circuit board. a support member; and sensing displacement of the housing relative to the base in the second and third directions. The sensor may include a second sensor for detecting the temperature of the object.

[0011] The upper elastic member includes at least four first to fourth upper elastic members separated from each other. The first sensor is connected to the plurality of support members via the first to fourth upper elastic members. It can be done.

[0012] Each of the first to fourth upper elastic members is a first inner frame that is coupled to the bobbin. a first outer frame coupled to the housing and connected to the support member; and a first frame connecting portion connecting the first inner frame and the first-1 outer frame. may include.

[0013] The lower elastic member includes at least two first and second lower elastic members separated from each other. The first coil is connected to the plurality of support members via the first and second lower elastic members. It can be done.

[0014] Each of the first and second lower elastic members has at least one lower elastic member connected to the bobbin. a second inner frame; and at least one second outer frame coupled to the housing; and the at least one second inner frame and the at least one second outer frame. The second-first frame may include a connecting portion for connecting the second-first frame.

[0015] The at least one second outer frame includes a plurality of second outer frames, The second lower elastic member and the second lower elastic member are second-2 frames that connect the second outer frames. The arm may further include a arm connector.

[0016] The at least four upper elastic members include fifth and sixth upper elastic members separated from each other. each of the fifth and sixth upper elastic members is in a direction perpendicular to the first direction; a first outer casing, which is connected to the housing and to the support member; A side frame may be included.

[0017] First, each of the first and second lower elastic members is connected to the 2-2 frame connecting portion. The elastic member may further include a bent portion bent in the first direction toward the upper elastic member. Each of the fifth and sixth upper elastic members is formed by bending the bent portion and the first and second outer frames. The frame may further include a connecting frame for connecting the frames.

[0018] Alternatively, each of the fifth and sixth upper elastic members is provided from the first and second outer frames. The second-second frame further includes a connection frame bent in the first direction to the second-second frame connection portion. The bent portion, the connection frame, and the first and second outer frames are integrally formed. can be formed into

[0019] Alternatively, each of the first and second lower elastic members is connected to the 2-2 frame connecting portion. a bent portion bent in the first direction from the first outer frame to the first-second outer frame. can be done.

[0020] Alternatively, the lens driving device may include a metal piece inserted or attached to the housing. and the first-second outer frame and the second-third frame connecting portion are connected by the metal piece. can be linked together.

[0021] The first and second lower elastic members are disposed at corresponding positions on both ends of the first coil. a coil frame connected to the end wire; and a coil frame and the at least one second The frame may further include a second-third frame connector that connects the inner frames.

[0022] The first sensor may be disposed, coupled or mounted to the bobbin and move therewith. The bobbin may include a sensor substrate, and the first sensor may be disposed on the sensor substrate. The first sensor may have a shape that can be disposed, coupled or mounted on a board. The semiconductor device may be disposed, coupled or mounted on the upper, lower or center of the outer periphery of the semiconductor substrate. The sensor substrate includes a mounting hole formed on an outer circumferential surface thereof, and the first sensor is disposed in the mounting hole. It can be inserted into the hole.

[0023] The sensor substrate has a shape facing the outer peripheral surface of the bobbin, and the first sensor a body disposed, coupled or mounted thereon; and an elastic member contact portion protruding from said body in said first direction. and a loop formed on the body and connecting the terminal of the first sensor and the elastic member contact portion. The elastic member contact portion may include a path pattern connected to the first to fourth upper elastic members. It can be connected.

[0024] The first and second magnets may be separate.

[0025] Alternatively, the first and second magnets may be integral. so that an imaginary horizontal center line passing through the magnet and perpendicular to the optical axis coincides with the upper end of the first magnet. The first sensor and the first magnet may be disposed to face each other. The bobbin is aligned with the optical axis It can move up and down in the direction.

[0026] The shapes and the number of the plurality of support members may be symmetrical to each other in the second and third directions. Cut.

[0027] Alternatively, the lower elastic member may be at least four first to fourth lower elastic portions separated from each other. the first sensor is supported by the first to fourth lower elastic members can be coupled to

[0028] Each of the first to fourth lower elastic members is a first inner frame that is coupled to the bobbin. a first outer frame coupled to the housing and connected to the support member; and a first frame connecting portion connecting the first inner frame and the first-1 outer frame. may include.

[0029] The upper elastic member includes at least two first and second upper elastic members separated from each other. The first coil is connected to the plurality of support members via the first and second upper elastic members. It can be done.

[0030] Each of the first and second upper elastic members includes at least one elastic member coupled to the bobbin. a second inner frame; and at least one second outer frame coupled to the housing; and the at least one second inner frame and the at least one second outer frame. The second-first frame may include a connecting portion for connecting the second-first frame.

[0031] The at least one second outer frame includes a plurality of second outer frames, The second upper elastic member and the second upper elastic member are second-second frames that connect the second outer frames. The arm may further include a arm connector.

[0032] The at least four lower elastic members further include fifth and sixth lower elastic members separated from each other. and each of the fifth and sixth lower elastic members is in a direction perpendicular to the first direction. a first outer wall portion formed on the housing and connected to the support member; It may include a frame.

[0033] Each of the first and second upper elastic members extends from the 2-2 frame connecting portion to the lower The elastic member may further include a bent portion bent in the first direction toward the side elastic member. The fifth and sixth lower elastic members each connect the bent portion and the first and second outer frames. The bending portion, the connecting frame, and the connecting member may further include a connecting frame. The first and second outer frames may be integrally formed.

[0034] Alternatively, each of the fifth and sixth lower elastic members is provided from the first and second outer frames. The second-second frame further includes a connection frame bent in the first direction to the second-second frame connection portion. It is possible to do so.

[0035] Alternatively, each of the first and second upper elastic members is connected to the 2-2 frame connecting portion. a bent portion bent in the first direction from the first outer frame to the first-second outer frame. can be done.

[0036] Alternatively, the lens driving device may further include a metal piece inserted or attached to the housing. and the first-second outer frame and the second-third frame connecting portion are connected by the metal piece. can be concatenated.

[0037] Each of the first and second upper elastic members is located at a corresponding one of both ends of the first coil. a coil frame connected to the end wire; and a coil frame and the at least one second The frame may further include a second-third frame connector that connects the inner frames.

[0038] The lens driving device according to another embodiment includes a bobbin for fixing a lens portion, and a lens unit outside the bobbin. A moving element including a coil portion provided on a side surface; a stator supporting the moving element; and a bobbin a first sensor provided on a side surface for detecting the movement of the bobbin; and a first elastic portion, both ends of which are connected to one side of the fixed element and which applies power to the coil portion; and The bobbin and the stator are connected at both ends to the other side of the bobbin and the stator, respectively, and are electrically connected to the first sensor. The elastic member may include a second elastic portion coupled to the

[0039] The first elastic portion is disposed on the upper side of the bobbin, and the second elastic portion is disposed on the lower side of the bobbin. Alternatively, the first elastic portion may be disposed below the bobbin. The second elastic portion may be disposed on an upper side of the bobbin.

[0040] The first elastic portion and the second elastic portion each have an outer portion fastened to the moving element and a front portion. an inner part that is fastened to the bobbin; and a connecting part that connects the outer part and the inner part to provide elasticity. and

[0041] The first elastic portion is made up of a first spring and a second spring that are spaced apart from each other. It can be.

[0042] The first and second springs have terminals soldered to the board. The outer portions of the respective portions can be folded.

[0043] The first and second springs are leaf springs that are symmetrical to each other. It can be.

[0044] The second elastic portion is provided with a number of terminals that is smaller than the number of terminals provided on the first sensor. Both may consist of two or more leaf springs.

[0045] At least one of the first and second elastic portions is alternately arranged in a direction perpendicular to the moving direction of the movable element. The shape of the symmetrical shape can be changed.

[0046] The stator includes a magnet portion disposed at a position corresponding to the coil portion; a housing for fixing the movable member; and a base for supporting the movable member and the housing. It is possible.

[0047] According to another embodiment of the present invention, the camera module further comprises: a lens driving device and an image sensor; For example, the camera module may include a bobbin for fixing the lens unit and a front a moving element including a coil portion provided on an outer surface of the bobbin; and a stator for moving the moving element. a first sensor provided on an outer surface of the bobbin for detecting movement of the bobbin; Both ends are connected to a bobbin and one side of the stator, respectively, to apply power to the coil portion. The first elastic portion is connected at both ends to the other side of the bobbin and the stator, and the first cell an elastic member including a second elastic portion electrically connected to the sensor; a substrate on which the movable element is mounted, an image sensor provided on the substrate, and the movable element and the stator and a cover can for housing and providing the exterior appearance.

[0048] The second elastic portion is provided with a small number of terminals so as to match the number of terminals provided on the first sensor. It may consist of at least two leaf springs or more.

[0049] The first elastic portion includes a first spring and a second spring that are spaced apart from each other. The suspension may include two leaf springs as guides. Effect of the Invention

[0050] The lens driving device and the camera module including the same according to the embodiment detect the displacement of the bobbin. The bobbin is not tilted, and the bobbin displacement is accurately measured using a sensor to measure the bobbin position. It can sense and respond quickly without increasing the number of parts and reducing the weight of the housing. This improves the performance and allows the first sensor to be placed directly on the bobbin for compact size. This allows for a lighter weight and lower power consumption than existing systems that use magnets on the bobbin. The improvement is achieved by using an elastic member as an electrical connecting member for the terminal of the first sensor. It has high reliability. [Brief description of the drawings]

[0051] [Figure 1] 1 is a schematic perspective view of a lens driving device according to an embodiment; [Diagram 2] FIG. 2 is an exploded perspective view of the lens driving device illustrated in FIG. [Diagram 3] 3 is a perspective view of the lens driving device according to the embodiment with the cover member illustrated in FIG. 1 and FIG. 2 removed. [Figure 4] FIG. 2 is an exploded perspective view of a bobbin, a first coil, a magnet, a first sensor, and a sensor substrate in the lens driving device according to the embodiment. [Figure 5a] 5 is a plan view of the bobbin and magnet shown in FIG. 4. [Figure 5b] 5 shows a perspective view of another embodiment of the sensor substrate shown in FIG. 4. [Figure 5c] 5 illustrates a rear perspective view of an embodiment of the first sensor and sensor substrate shown in FIG. 4. [Figure 6] FIG. 2 shows a top perspective view of a housing according to an embodiment. [Figure 7] FIG. 2 is an exploded perspective view of a bottom surface of a housing and a magnet according to an embodiment. [Figure 8] 4 shows a cross-sectional view taken along line II' shown in FIG. [Figure 9] 11 is a graph showing accuracy depending on an optimal position of a first sensor. [Figure 10] FIG. 13 is a plan perspective view showing the bobbin, the housing, the upper elastic member, the first sensor, the sensor substrate, and a number of support members joined together. [Figure 11] 1 is a bottom perspective view showing the bobbin, the housing, the lower elastic member, and the plurality of support members joined together; [Figure 12] 1 is a perspective view showing an upper elastic member, a lower elastic member, a first sensor, a sensor substrate, a base, a support member, and a circuit board according to an embodiment of the present invention; [Figure 13] FIG. 2 is an exploded perspective view of the base, the second coil, and the circuit board. [Figure 14] 13 is a schematic cross-sectional side view of a lens driving device according to another embodiment. [Figure 15] 2 is a perspective view of a first elastic part according to an embodiment. FIG. [Figure 16] 13 is a perspective view of a second elastic portion according to the embodiment. FIG. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0052] The present invention will be described below with reference to examples in order to specifically explain the present invention and to help understand the invention. However, the present invention can be implemented in various other ways. However, the scope of the present invention is not limited to the following examples. The present invention should not be construed as being limited to the above-described embodiment, but rather should be construed as being illustrative and not restrictive. It is something that can be done.

[0053] In the description of the embodiment of the present invention, the term "on or under" each element is used. When the term "on or under" is used, the term "on" or "under" is used. r) is when two elements are in direct contact with each other or One or more other elements are arranged between the two elements. Also includes all those formed by placing "on or under" When it is expressed as "upper or lower", it means that one element is the upper It can also mean downward as well as upward.

[0054] Also, the terms "first" and "second," "upper" and "lower" used below are used in Relational terms such as "of" refer to some physical or logical relationship between such entities or elements. or procedure, but does not necessarily require or imply the association of one entity or element with another entity or element. It can also be used only to distinguish it from an element.

[0055] In the drawings, the thickness and size of each layer may be exaggerated or omitted for convenience and clarity of explanation. The dimensions of each component are shown in the figures as they are in actuality. It is not a reflection.

[0056] The lens driving devices 100 and 400 according to the embodiments will be described below with reference to the accompanying drawings. For convenience of explanation, the lens driving devices 100 and 400 according to the embodiments are in Cartesian coordinates. The following description will be given using the coordinate system (x, y, z), but other coordinate systems may also be used. In each figure, the x-axis and y-axis are perpendicular to the z-axis, which is the optical axis direction. The z-axis direction, which is the optical axis direction, is called the 'first direction' and the x-axis direction is called the 'second direction'. The y-axis direction can be called the 'third direction', and the y-axis direction can be called the 'third direction'.

[0057] Example Small camera module for mobile devices such as smartphones or tablet PCs The 'image stabilization device' applied to the above refers to a device that reduces the amount of image stabilization caused by the user's hand shaking when taking a still image. To prevent the contours of the captured image from being clearly formed due to vibration. The term "device" may refer to a device configured to:

[0058] In addition, an 'autofocusing device' is a device that automatically adjusts the focus of the image of the subject using an image sensor. This type of image stabilization device and autofocusing device The lens driving device 100 according to the embodiment may be configured in various ways. The optical module, which consists of a single lens, is moved in a first direction parallel to the optical axis, or moved perpendicular to the first direction. By moving the lens relative to a plane formed in a second and third direction perpendicular to the lens, the image stabilization operation and / or can perform autofocusing operations.

[0059] FIG. 1 is a schematic perspective view of a lens driving device 100 according to an embodiment, and FIG. 2 is a schematic perspective view of the lens driving device 100 illustrated in FIG. 1 is an exploded perspective view of the lens driving device 100. FIG.

[0060] 1 and 2, the lens driving device 100 according to the embodiment includes a first lens driving unit. The lens unit may include a second lens driving unit and a cover member 300.

[0061] The first lens drive unit can function as the autofocusing device described above. That is, the first lens driving unit is a magnet 130 and a first coil 120. The action may serve to move the bobbin 110 in a first direction.

[0062] The second lens driving unit can function as the image stabilization device described above. That is, the second lens driving unit is driven by the interaction between the magnet 130 and the second coil 230. and serves to move all or a part of the first lens driving unit in the second and third directions. It is possible.

[0063] The cover member 300 may be configured in a substantially box-like shape, and the first and second lens driving units can be surrounded.

[0064] FIG. 3 shows a lens driving device according to an embodiment in which the cover member 300 shown in FIGS. 1 and 2 is removed. 1 shows a perspective view of the device.

[0065] The first lens driving unit includes a bobbin 110 and a first coil. 120, magnet 130, housing 140, top The side elastic member 150, the lower elastic member 160, the first sensor 170 and the sensor substrate 180 It can include.

[0066] FIG. 4 shows a lens driving device according to the embodiment, including a bobbin 110, a first coil 120, a magnet Net 130; 130-1, 130-2, 130-3, 130-4, first sensor 170 1 also shows an exploded perspective view of the sensor substrate 180.

[0067] FIG. 5a shows the bobbin 110 and magnets 130: 130-1, 130-2, 5b shows a plan view of the sensor substrate 180 shown in FIG. 5c shows a perspective view of the first sensor 170 and the sensor base 170 shown in FIG. A rear perspective view of one embodiment of plate 180 is shown.

[0068] Referring to the above-mentioned drawings, the bobbin 110 is disposed in the internal space of the housing 140 in the optical axis direction. The movable member may be mounted so as to be movable back and forth in a first direction or a direction parallel to the first direction. The first coil 120 is attached to the outer circumferential surface of the bobbin 110 as shown in FIG. The coil 120 and the magnet 130 can electromagnetically interact with each other. The magnet 130 is disposed around the bobbin 110 so as to face the first coil 120. can be done.

[0069] In addition, the bobbin 110 moves up and / or down in a first direction parallel to the optical axis or in a direction parallel to the first direction. When the upper and lower elastic members 150 are lowered to perform the autofocus function, , 160. For this purpose, the upper and lower elastic members The coils 150 and 160 can be coupled to the bobbin 110 and the housing 140 as described below. Cut.

[0070] Although not shown in the figure, the lens driving device is attached to the inner side (i.e., the inside) of the bobbin 110. The optical system may include a lens barrel (not shown) into which at least one lens can be attached. The lens barrel can be attached to the inside of the bobbin 110 in various ways. For example, The lens barrel may be fixed directly to the inside of the bobbin 110 or may be attached to the lens barrel. Alternatively, a lens may be formed integrally with the bobbin 110 without the need for a lens barrel. The combined lens may consist of a single lens, or two or more lenses may form an optical system. It can also be configured to:

[0071] According to another embodiment, although not shown, a female screw portion is formed on the inner peripheral surface of the bobbin 110. The outer circumferential surface of the lens barrel is formed with a male screw portion corresponding to the female screw portion, and these are screwed together. The lens barrel can be coupled to the bobbin 110 in this manner, but the embodiment is not limited thereto. According to another embodiment, the bobbin 110 and the lens barrel are joined in a non-threaded manner using adhesive. Of course, in the screw-in method, adhesive can be used to secure the connection between the screws after they are tightened. It is also possible to provide a more secure attachment.

[0072] The bobbin 110 may include first and second protrusions 111,112.

[0073] The first protrusion 111 has a guide portion 111a and a first stopper. The guide portion 111a is provided at the installation position of the upper elastic member 150. For example, as shown in FIG. 11a can guide the path through which the first frame connecting portion 153 of the upper elastic member 150 passes. For this reason, according to the embodiment, the plurality of guide portions 111a are arranged in a first direction perpendicular to the first direction. The guide portion 111a may be provided so as to protrude in the second and third directions. The bobbin 110 may be provided symmetrically with respect to the center of the bobbin 110 on the plane defined by the x-axis and y-axis. Unlike the illustrated embodiment, the structure may be asymmetric to eliminate interference with other components. .

[0074] The second protrusion 112 may protrude in second and third directions perpendicular to the first direction. In addition, the upper surface 112a of the second protruding portion 112 is provided with a first inner frame 112b of the upper elastic member 150, which will be described later. The arm 151 may have a shape that allows it to be attached.

[0075] FIG. 6 shows a plan perspective view of a housing 140 according to an embodiment, and FIG. 1 shows an exploded perspective view of the bottom of the ring 140 and the magnet 130.

[0076] Referring to FIG. 6, the housing 140 has first and second protrusions 111 and 112 corresponding thereto. The mounting recess 146 may include a first mounting recess 146 formed at a position corresponding to the mounting recess 146 .

[0077] In addition, the first stopper 111b of the first protrusion 111 and the second protrusion 112 are 10 is a first direction or a first direction which is a direction parallel to the optical axis for the autofocus function When the bobbin 110 moves in a direction parallel to the direction of the wire, it may move beyond the specified range due to an external shock, etc. However, the bottom surface of the body of the bobbin 110 does not directly collide with the top surfaces of the base 210 and the circuit board 250. For this reason, the first stopper 111b is The guide portion 111a protrudes from the outer circumferential surface of the guide portion 110 in the second or third circumferential direction. The second protrusion 112 may also be provided on the upper surface 112a on which the upper elastic member 150 is attached. It can be set further out to the side.

[0078] 6, the bottom surfaces of the first and second protrusions 111 and 112 and the first mounting recess 146 are If the state where the bottom surface 146a is in contact is set as the initial position, the autofocus function is already in operation. One-way in existing voice coil motors (VCMs) That is, the current is supplied to the first coil 120. When the current supply is cut off, the bobbin 110 rises, and when the current supply is cut off, the bobbin 120 falls. This allows the autofocus function to be realized.

[0079] However, the bottom surfaces of the first and second protrusions 111 and 112 and the bottom surface 146 of the first mounting recess 146 If a is set at a certain distance away as the initial position, the autofocus function It is possible to control the direction of the current like the bidirectional control of existing voice coil motors. That is, the bobbin 110 can be moved upward or downward in a direction parallel to the optical axis. For example, when a forward current is applied, When the current is applied in the reverse direction, the bobbin 110 moves upward. The slider 110 can move downward.

[0080] A housing corresponding to a space of a first width (W1) between the first and second protrusions 111 and 112 The third protrusion 148 of the housing 140 may be formed to bulge at the position 140. The surface of the third protrusion 148 facing the bobbin 110 has the same shape as the side of the bobbin 110. In this case, the first and second protrusions 111 and 112 shown in FIG. The first width (W1) between the first protrusion 142 and the second width (W2) of the third protrusion 148 shown in FIG. 6 have a certain tolerance. As a result, the gap between the first and second protrusions 111 and 112 can be formed as follows. Therefore, the third protrusion 148 can be prevented from rotating. Even if the third protrusion 148 receives a force in a direction rotating around an optical axis other than the optical axis direction, Rotation of the bin 110 can be prevented.

[0081] Meanwhile, according to an embodiment, the first sensor 170 is disposed, coupled or mounted on the bobbin 110. The first sensor 170 is a second sensor parallel to the optical axis. The displacement of the bobbin 110 in one direction or in a direction parallel to the first direction is sensed, and the sensed result is The feedback signal can be output as a feedback signal. Using the result of sensing the displacement of the bobbin 10 in the first direction or in a direction parallel to the first direction, The displacement of the actuator 10 in a first direction or in a direction parallel to the first direction can be adjusted.

[0082] The first sensor 170 may be disposed, coupled, or fixed to the bobbin 110 or the housing 140 in various forms. may be implemented, depending on the manner in which the first sensor 170 is disposed, coupled, or implemented. Thus, the first sensor 170 can be supplied with a current in a variety of ways.

[0083] According to one embodiment, the first sensor 170 is fastened to the housing 140, and the first sensor 1 A separate sensor magnet (not shown) is disposed on the bobbin 110 so as to face the magnet 70. The first sensor 170 is inserted into the first mounting recess 14 of the housing 140 shown in FIG. 6 (for example, the surface of the third protrusion 148) In this case, the magnetic force exerted by a separate sensor magnet on the magnet 130 may be As a result, the bobbin 110 moves in a first direction, which is the optical axis direction, or in a direction parallel to the first direction. In consideration of this, a separate The position of the bobbin 110 minimizes the interaction between the sensor magnet and the magnet 130. A separate sensor magnet may be disposed, coupled or mounted.

[0084] According to another embodiment, the first sensor 170 is directly disposed on the outer circumferential surface of the bobbin 110. In this case, a surface electrode (not shown) may be provided on the outer circumferential surface of the bobbin 110. ) is formed, and the first sensor 170 can be applied with a current via the surface electrodes. .

[0085] According to yet another embodiment, the first sensor 170 is indirectly attached to the bobbin 110 as shown. For example, the first sensor 170 may be a sensor The sensor is disposed, bonded or mounted on a substrate 180, which is bonded to the bobbin 110. That is, the first sensor 170 can detect the bobbin 1 through the sensor substrate 180. 10.

[0086] As in the other and further embodiments described above, the first sensor 170 is attached to the bobbin 110. When the sensor magnet is placed directly or indirectly on the magnet 130, can be placed separately, and the magnet 130 is used as a sensor magnet. It is also possible.

[0087] Hereinafter, the first sensor 170 is indirectly disposed on the bobbin 110 via the sensor substrate 180. , coupled or mounted, and the magnet 130 is used as a sensor magnet. However, the embodiment is not limited to this.

[0088] 4 and 5a, a support groove 114 is provided on the side of the bobbin 110, and the sensor The substrate 180 can be inserted into the support groove 114 and coupled to the bobbin 110. For example, the sensor substrate 180 may be in the shape of a ring as shown in the figure. The embodiment is not limited to the shape of the sensor substrate 180. The first sensor may be disposed between the first and second protrusions 111 and 112. The sensor 170 may have a configuration that allows it to be disposed on, coupled to, or mounted on a sensor substrate 180. For example, as illustrated in FIG. 4 and FIG. 5b, the first sensor 170 is The outer periphery is arranged, joined or mounted in various forms on the upper side A1, the middle side A2 or the lower side A3. At this time, the first sensor 170 can be connected to the outside via the circuit of the sensor board 180. For example, as illustrated in FIG. 5b, a current can be applied from the sensor substrate 18. A mounting hole 183 is formed on the outer circumferential surface of the sensor 170, and the first sensor 170 is disposed and coupled to the mounting hole 183. At least one surface of the mounting hole 183 may be inclined (not shown). By forming the first sensor 170, the epoxy injection for the assembly of the first sensor 170 can be performed more smoothly. In addition, a separate epoxy or the like may be injected into the mounting hole 183. Alternatively, epoxy or the like may be injected to improve the placement and bonding strength of the first sensor 170. , or the mounting capacity can be increased.

[0089] Alternatively, as shown in FIG. 4, the first sensor 170 may be attached to the front surface of the sensor substrate 180. The device can be attached and supported with adhesive materials such as epoxy or double-sided tape. As shown, the first sensor 170 is centrally disposed, coupled or mounted to a sensor substrate 180. It can also be done.

[0090] The bobbin 110 includes a first sensor 170 disposed, coupled or mounted on a sensor substrate 180. The receiving recess 116 may include a receiving recess 116 suitable for receiving the first and the second protrusions 111 and 112 may be formed in the space between them.

[0091] The sensor substrate 180 includes a body 182, elastic member contact portions 184-1, 184-2, and 184-3. -3, 184-4 and circuit patterns L1, L2, L3, L4.

[0092] A support groove 1 is formed between the outer circumferential surface of the bobbin 110 and the first and second protrusions 111 and 112. When the bobbin 110 has the same shape as the outer circumferential surface of the bobbin 110, the body 1 inserted into the support groove 114 82 may have a shape that allows it to be inserted into the support groove 114 and fixed. As shown, the support groove 114 and the body 182 may have a circular planar cross-sectional shape, but in practice According to another embodiment, the support groove 114 and the body 182 have a polygonal flat cross section. It can also have a shape.

[0093] The body 182 of the sensor board 180 has a first sensor 170 disposed, coupled or fixed on its outer periphery. includes a first segment mounted thereon and a second segment extending from the first segment. In addition, the sensor substrate 180 has an opening in a portion facing the first segment. The opening 181 allows the support member 114 to be easily inserted into the support groove 114. However, embodiments are not limited to any particular shape for sensor substrate 180.

[0094] The elastic member contact portions 184-1, 184-2, 184-3, and 184-4 are connected to the body 182. a first direction in which the first inner frame 151 can come into contact with the first inner frame 151, for example, a second direction in which the first inner frame 151 can come into contact with the first inner frame 151, The elastic member contact portions 184-1, 184-2, 184-3 and 184-4 are connected to a first inner frame 151 of the upper elastic member 150, which will be described later. This is the part that is done.

[0095] The circuit patterns L1, L2, L3, and L4 are formed on the body 182 and connected to the first sensor 170. The elastic member contact portions 184-1, 184-2, 184-3, and 184-4 are electrically connected to each other. For example, the first sensor 170 may be a Hall sensor, and may be a magnetic sensor. Any sensor capable of detecting a change can be used.

[0096] When the first sensor 170 is a Hall sensor, the Hall sensor 170 has a plurality of pins. For example, the plurality of pins may include a first pin and a second pin. For example, referring to FIG. 5c, pin 1 is a pin 1-1 P connected to a voltage and a ground, respectively. The first pin is a first pin for outputting the detected result. 2-1 pin P21 and 2-2 pin P22. The detection result is the feedback signal output via 2-2 pins P21 and P22. The feedback signal may take any of the following forms, but is not limited to those of the embodiments.

[0097] The 1-1, 1-2, 2-1 and 2-2 pins P11 and P12 of the first sensor 170 , P21, P22 are connected to the elastic member contact portion 184 via the circuit patterns L1, L2, L3, L4. -1, 184-2, 184-3, and 184-4, respectively. For example, referring to FIG. 5c, the first, second, third and fourth lines L 1, L2, L3, L4 connect the 1-1, 1-2, 2-1 and 2-2 pins P11, P12, P21, and P22 are the fourth, third, second, and first elastic member contact portions 184-4, 184 -3, 184-1, and 184-2, respectively. The first to fourth lines L1, L2, L3, and L4 may be formed so as to be visible to the naked eye. According to another embodiment, these lines L1, L2, L3, L4 are arranged on the torso so as not to be visible to the naked eye. It may also be formed in the body 182 .

[0098] FIG. 8 shows a cross-sectional view taken along line II' shown in FIG.

[0099] Referring to FIG. 8, a first sensor 170 passes through the center of the optical axis direction of the first sensor 170 and is perpendicular to the optical axis. The imaginary horizontal center line 172 formed in two directions coincides with the upper end 131 of the magnet 130. In this way, the first sensor 170 can be disposed opposite the magnet 130 .

[0100] At this time, the point where the imaginary horizontal center line 172 coincides with the upper end 131 of the magnet 130 is used as a reference. As a reference point, the bobbin 110 moves up and down in a first direction, which is the optical axis direction, or in a direction parallel to the first direction. However, the embodiment is not limited thereto.

[0101] FIG. 9 is a graph showing the accuracy depending on the position of the first sensor 170. The vertical axis indicates the position of the first sensor 170, and the vertical axis indicates the accuracy of the first sensor 170.

[0102] 8 and 9, a virtual horizontal center line 172 is aligned with the upper end 131 of the magnet 130. 1, the detection efficiency of the first sensor 170 is maximized when the first sensor 170 is positioned at .

[0103] FIG. 10 shows a bobbin 110, a housing 140, an upper elastic member 150, and a first sensor 170. 2 shows a top perspective view of a sensor substrate 180 and a number of support members 220 coupled together.

[0104] FIG. 11 shows a bobbin 110, a housing 140, a lower elastic member 160, and a plurality of support members 2 20 is a bottom perspective view of the assembled device.

[0105] On the other hand, the first coil 120 is wound on the outer circumferential surface of the bobbin 110 by an operator or a machine. Then, the first coil 120 is wound such that the first and second ends of the first coil 120 are wound from the bottom surface of the bobbin 110 to the first position. The wire can be wound around and fixed to a pair of winding protrusions 119 protruding in the direction of the wire. The position of the end of the first coil 120 wound around the winding projection 119 by the operator is variable. As shown in FIG. 11, a pair of winding projections 119 are arranged symmetrically around the center of the bobbin 110. However, the embodiment is not limited thereto.

[0106] As shown in FIG. 8, the first coil 120 is wound in a coil groove formed on the outside of the bobbin 110. 2, the first coil 120 may be inserted into the first coil 118. The coil block may be in the shape of a square ring, but is not limited thereto. According to another embodiment, the first coil 120 is wound directly on the outer circumferential surface of the bobbin 110. Alternatively, the coil may be wound using a coil ring (not shown). The ring is fixed in the same way as the sensor board 180 is inserted into the support groove 114. The first coil 120 may be wound on the outside of the bobbin 110. Alternatively, the first coil may be wound around a coil ring. The start and end wires of the coil 120 can be wound around the winding protrusion 119 and fixed thereto. The composition is similar.

[0107] The first coil 120 may be formed in a substantially octagonal shape as shown in FIG. corresponds to the shape of the outer circumferential surface of the bobbin 110, and as shown in FIG. This is because the hexagon is an octagon. In addition, at least four sides of the first coil 120 are formed in a straight line. The corners connecting these faces can also be formed in straight lines. This is not a limitation, and it is also possible to form the plate in a round shape.

[0108] The linearly formed portion of the first coil 120 corresponds to the surface of the magnet 130. In addition, the first coil 120 and the corresponding magnet 13 may be formed in such a manner that ... The surface of 0 can have the same curvature as the curvature of the first coil 120. If the coil 120 is linear, the corresponding face of the magnet 130 can be linear. If the first coil 120 is curved, the corresponding face of the magnet 130 is curved. In addition, even if the first coil 120 is curved, the surface of the corresponding magnet 130 is It can be linear and vice versa.

[0109] The first coil 120 is arranged such that the bobbin 110 is oriented in a first direction parallel to the optical axis or in a direction parallel to the first direction. When current is supplied, the magnetic field moves in the direction of the magnet to perform the autofocus function. An electromagnetic force can be generated by interaction with the net 130, and the generated electromagnetic force The bobbin 110 can be moved in a first direction or in a direction parallel to the first direction.

[0110] The first coil 120 may be configured to correspond to the magnet 130. The net 130 is made of a single body, and the entire surface facing the first coil 120 has the same polarity. With this configuration, the surface of the first coil 120 that faces the magnet 130 has the same polarity. It can be configured as follows.

[0111] Alternatively, the magnet 130 is divided into two or four parts by a plane perpendicular to the optical axis, and the first part is If the surface facing the coil 120 is divided into two or more parts, the first coil 120 is also divided. It is also possible to divide the magnet 130 into a number corresponding to the number of magnets 130 .

[0112] The magnet 130 may be attached at a position corresponding to the first coil 120 . For example, referring to FIG. 8, the magnet 130 faces the first sensor 170. In addition, the first coil 120 may be disposed so as to face the first coil 120. In this way, according to an embodiment, a magnet for the first sensor 170 is not separately provided, but is disposed by the magnet. In this case, the magnet 130 is used as a magnet for the first sensor 170 .

[0113] In this case, the magnet 130 is attached to the first side 1 of the housing 140 as shown in FIG. The magnet 130 can be housed and supported in the housing 140. The first coil 12 may have a shape corresponding to the first side portion 141 of the first coil 12, i.e., a substantially rectangular parallelepiped shape. The surface facing 0 may be formed to correspond to the curvature of the corresponding surface of the first coil 120. do.

[0114] The magnet 130 may be a single piece, and in the embodiment, referring to FIG. 5a, The surface facing the first coil 120 is arranged to be an S pole 132, and the outer surface is arranged to be an N pole 134. However, this is not a limitation, and the opposite configuration is also possible.

[0115] At least two magnets 130 can be attached, and according to an embodiment, four magnets can be attached. In this case, the magnet 130 may be attached as shown in FIG. In addition, the shape may be substantially rectangular in plan view, or may be triangular, rhombic, or the like. It is also possible.

[0116] However, the surface of the magnet 130 that faces the first coil 120 is formed in a straight line. However, the present invention is not limited thereto, and the corresponding surface of the first coil 120 may be curved. In this case, the first curvature may be provided in a curved shape having a corresponding curvature. In the embodiment, the housing 14 can maintain a uniform distance from the coil 120. 0, one each on the four first sides 141. However, this is not a limitation, and either the magnet 130 or the first coil 120 may be used depending on the design. Only one of the first coils 1 and 2 may be planar and the other may be curved. The opposing surfaces of the first coil 20 and the magnet 130 may be curved. The curvatures of the opposing surfaces of the coil 120 and the magnet 130 may be the same.

[0117] As shown in FIG. 5a, if the plane of the magnet 130 is a square, multiple magnets A pair of the connectors 130 are arranged parallel to the second direction, and another pair are arranged parallel to the third direction. With such an arrangement, a housing 140 for image stabilization, which will be described later, can be used. It is possible to control the movement of the object.

[0118] Alternatively, the housing 140 may have a polygonal shape in plan view, according to an embodiment, as shown in FIG. As illustrated in FIG. 6, the outer upper portion of the housing 140 has a rectangular shape in plan view, but FIG. As illustrated in Figs. 6 and 7, the inner lower part may have an octagonal shape in plan. Thus, the housing 140 may include multiple sides. For example, the four first sides 14 It may include one to four second sides 142 .

[0119] The first side portion 141 corresponds to the portion where the magnet 130 is attached, and the second side portion 142 corresponds to the portion where the magnet 130 is attached. The first side portion 141 may correspond to a portion where a support member 220 (described later) is disposed. A number of second sides 142 may be connected to one another and may include a flat surface of a fixed depth.

[0120] According to an embodiment, the first side 141 has an area corresponding to the magnet 130 or larger. 7, the magnet 130 has a first side 141. The magnet can be fixed to a magnet mounting portion 141a formed on the inner lower end of the magnet. The magnet mounting portion 141a can be formed in a recessed shape corresponding to the size of the magnet 130. and arranged so that at least three surfaces, i.e., both side surfaces and the top surface, are in alignment with the magnet 130. The bottom surface of the magnet mounting portion 141a, that is, the second coil 230 described later, An opening is formed on the mating surface so that the bottom surface of the magnet 130 directly faces the second coil 230. It can be formed as follows.

[0121] The magnet 130 may be fixed to the magnet mounting portion 141a with an adhesive. This is not a limitation, and adhesive materials such as double-sided tape can also be used. Alternatively, instead of forming the magnet mounting portion 141a in a recessed shape as shown in FIG. In addition, the magnet 130 may be formed as a mounting hole in which a part of the magnet 130 is exposed or inserted. .

[0122] The first side portion 141 may be disposed parallel to the side surface of the cover member 300. The first side 141 may be formed to have a larger surface area than the second side 142. The second side 142 may form a passageway through which the support member 220 passes. The upper portion may include a first through hole 147. The support member 220 may be inserted through the first through hole 147. It can be connected to the side elastic member 150 .

[0123] The housing 140 may further include a second stopper 144. The upper surface of the body of the housing 140 is the inner surface of the cover member 300 shown in FIG. It is possible to prevent a direct collision with the side.

[0124] In addition, the second side portion 142 of the housing 140 has a plurality of first upper support protrusions on the upper surface. The first upper support protrusions 143 may be hemispherical as shown in the example. Alternatively, it may have a cylindrical or prismatic shape, but in the embodiment is not limited to the shape of the first upper support protrusion 143.

[0125] 6 and 7, the housing 140 has a first recess 14 on a second side 142 thereof. The reason why the support member 220 is formed is not only to form a path through which the support member 220 passes, but also to This is to ensure a space for filling with gel-type silicone that can act as a damping agent. That is, the recess 142a can be filled with damping silicon.

[0126] FIG. 12 shows an upper elastic member 150, a lower elastic member 160, and a first sensor 17 according to an embodiment. 0, a perspective view of the sensor substrate 180, the base 210, the support member 220 and the circuit board 250 The figure is shown.

[0127] According to an embodiment, the upper elastic member 150 is made up of at least four electrically separated First to fourth upper elastic members 150; The elastic member contact parts 184-1 and 184- 2, 184-3, and 184-4 are the first to fourth upper elastic members 150-1, 150-2, and 150-3. -3, 150-4 may be connected to a plurality of support members 220. The first upper elastic member 150-1 connected to the elastic member contact portion 184-4 is connected to the first support member 22. 0-1, and is connected to the 1-1 and 1-2 support members 220-1a and 220-1b. The second upper elastic member 150-2 connected to the elastic member contact portion 184-3 is connected to the second support member 220. -2, and the third upper elastic member 150-3 connected to the elastic member contact portion 184-2 is The third support member 220-3 is made up of the 3-1 and 3-2 support members 220-3a and 220-3. b, and the fourth upper elastic member 150-4 connected to the elastic member contact portion 184-1 is the 4 may be coupled to support member 220-4.

[0128] The first and third upper elastic members 150-1 and 150-3 each have a first inner flaps 150a. The first frame 151 includes a first outer frame 152a and a first frame connecting portion 153. The second and fourth upper elastic members 150-2 and 150-4 are respectively 150b of the first inner frame. The first frame 151 may include a first outer frame 152b and a first frame connecting portion 153. The first inner frame 151 is configured to receive the bobbin 110 and the corresponding elastic member contact parts 184-1, 1 As shown in FIG. 4, the second When the upper surface 112a of the protruding portion 112 is flat, the first inner frame 151 is in contact with the upper surface 112a. After being placed, it can be fixed with an adhesive material. Unlike the above, when a support protrusion (not shown) is formed on the upper surface 112a, the first inner frame The support protrusion is inserted into the 2-1 through hole 151a formed in the arm 151, and then fixed by heat fusion. The mounting bracket 10 may be secured to the mounting surface 102 by means of a bonding material such as epoxy.

[0129] The first-first outer frames 152a and 152b are connected to the housing 140 and support the housing 140. The first frame connector 153 can be connected to the first inner frame 1 51 and the first-first outer frames 152a and 152b. The frame 152b has a shape obtained by dividing the first-first outer frame 152a into two. That is, according to another embodiment, the first-first outer frame 152a may also be a first It can also be split in two like the -1 outer frame 152b.

[0130] The first frame connecting portion 153 is bent at least once to form a pattern of a certain shape. The position change and minute deformation of the first frame connection part 153 can form a bobbin. The support 110 is elastically supported for upward and / or downward movement in a first direction parallel to the optical axis. can be done.

[0131] In the housing 140, the first upper support protrusions 143 are the upper springs 144 shown in FIG. The first-first outer frames 152a and 152b of the support member 150 are connected to the housing 140. According to the embodiment, the first-first outer frames 152a and 152b are fixed to the first-first outer frames 152a and 152b. A second through hole 157 having a shape corresponding to the first upper support protrusion 143 is formed at a position corresponding to the first upper support protrusion 143. At this time, the first upper support protrusion 143 and the 2-2 through hole 157 are fixed by thermal fusion. Alternatively, the first to fourth upper portions may be fixed with an adhesive such as epoxy. In order to fix the elastic members 150-1, 150-2, 150-3, and 150-4, a sufficient Therefore, the first to fourth upper elastic members 143 can be provided in the first upper support protrusions 143. 50-1, 150-2, 150-3, 150-4 and the housing 140 are incompletely coupled This can be prevented.

[0132] In addition, the distance between the first upper support protrusions 143 is set to be such that interference with peripheral components can be avoided. That is, the distance between the center of the bobbin 110 and the center of the bobbin 110 can be appropriately set within a range that can be set. The first upper support protrusions 143 are symmetrically arranged at regular intervals on the corners of the housing 140. The spacing between the bobbins may be different, but may be spaced apart by a specific distance through the center of the bobbin 110. They may also be arranged symmetrically about the imaginary line.

[0133] The first inner frame 151 is connected to the bobbin 110, and the first-1 outer frame 152a, After the elastic member contact portion 18 of the sensor substrate 180 is bonded to the housing 140, 4-1, 184-2, 184-3, 184-4 and the first inner frame 151 are soldered, etc. Conductive connections CP11, CP12, CP13, and CP14 should be made as shown in Figure 10. As a result, two of the four pins P11, P12, P21, and P22 of the first sensor 170 are Power of different polarities is applied to the pins P11 and P12, and the four pins of the first sensor 170 The remaining two pins P21 and P22 can output feedback signals. In this way, powers of different polarities are applied and feedbacks of different polarities are generated. In order to output a signal, the upper elastic member 150 is connected to the first to fourth upper elastic members 15. It can be divided into four parts: 0-1, 150-2, 150-3, and 150-4.

[0134] The first to fourth upper elastic members 150-1, 150-2, 150-3, and 150-4 are supporting members. 220 to the circuit board 250. That is, the first upper elastic member 150-1 is Through at least one of the 1-1 or 1-2 support members 220-1a and 220-1b The second upper elastic member 150-2 is connected to the circuit board 250 via the second support member 220-2. The third upper elastic member 150-3 is connected to the circuit board 250 through the 3-1 or 3-2 The support member 220-3a and the support member 220-3b are connected to the circuit board 250 via at least one of the support members 220-3a and 220-3b. The fourth upper elastic member 150-4 is connected to the circuit board 250 via the fourth support member 220-4. Therefore, the first sensor 170 can be connected to the support member 220 and the upper elastic member Power is provided from the circuit board 250 via 150 or it is output from itself. A feedback signal may also be provided to the circuit board 250 .

[0135] Meanwhile, the lower elastic member 160 is made up of the first and second lower elastic members 16 The first coil 120 may include first and second lower elastic members. It may be connected to a plurality of support members 220 via 160-1 and 160-2.

[0136] Each of the first and second lower elastic members 160-1 and 160-2 has at least one 2 inner frames 161-1, 161-2, at least one second outer frame 162-1 , 162-2 and at least one second frame connection portion 163-1, 163-2, 163 -3, 163-4.

[0137] The second inner frames 161-1 and 161-2 can be coupled to the bobbin 110. The two outer frames 162 - 2 , 162 - 2 can be coupled to the housing 140 . The 2-1 frame connection portion 163-1 is connected to the 2-1 inner frame 161-1 and the 2-1 outer frame 162-1. 62-1, and the 2-2 frame connecting portion 163-2 connects the two second outer frames 162 The second inner frame connecting portion 163-3 is a second inner frame connecting portion 163-4. The frame 161-2 and the second outer frame 162-2 can be connected.

[0138] The first lower elastic member 160-1 further includes a first coil frame 164-1. The second lower elastic member 160-2 may further include a second coil frame 164-2. Referring to FIG. 11, the first and second coil frames 164-1 and 164-2 are The first coil 1 is wound on the upper surface of the first coil 1 in the vicinity of the pair of winding projections 119 on which both ends of the wire 120 are wound. The ends of the first and second lower portions are electrically connected to each other by a conductive connecting member such as solder. The elastic members 160-1 and 160-2 receive power of different polarities and transmit it to the first coil 120. In this way, the powers of different polarities can be received and transferred to the first coil 120. In order to achieve this, the lower elastic member 160 is made up of first and second lower elastic members 160-1, 160-2. It can be divided into two parts: 60-2.

[0139] In addition, the first and second lower elastic members 160-1 and 160-2 are the second-fourth frames. The second-fourth frame connecting portion 163-4 may further include a frame connecting portion 163-4. The first and second coil frames 164-1 and 164-2 are connected to the second inner frame 161-2. It is possible.

[0140] The above-mentioned 2-1 to 2-4 frame connection parts 163-1, 163-2, 163-3, 1 At least one of 63-4 is folded at least once to form a pattern of a certain shape. In particular, the 2-1 and 2-3 frame connecting portions 163-1 and 163- Due to the position change and minute deformation of the 3, the bobbin 110 moves up and / or down in a first direction parallel to the optical axis. Or the downward movement can be supported elastically.

[0141] According to one embodiment, as shown, first and second lower elastic members 160-1, 160-2 Each of the second frame 2-2 may further include a bent portion 165. The bent portion 165 is The upper elastic member 150 is bent in the first direction from the connecting portion 163-2 toward the upper elastic member 150. The elastic member 160 is made up of fifth and sixth upper elastic members 150-5 and 150-6 which are electrically isolated from each other. The fifth and sixth upper elastic members 150-5 and 150-6 may further include Each of the first and second outer frames 154 and 155 may include a connecting frame 154 and a first and second outer frame 155. The connecting frame 154 may be connected to the bent portion 165 and may extend in a first direction. The outer frame 155 is bent from the connecting frame 154 in a direction perpendicular to the first direction. The housing 155 may be coupled to the support member 220. That is, , the fifth upper elastic member 150-5 is connected to the fifth support member 220-5, and the sixth upper elastic member 150-6 may be connected to the sixth support member 220-6. The bent portions 165 of the lower elastic members 160-1 and 160-2 and the fifth and sixth upper elastic members The connecting frame 154 and the first-second outer frame 155 of the members 150-5 and 150-6 are the same. In this manner, the first and second lower elastic members 160-1 and 16 0-2 and the fifth and sixth upper elastic members 150-5 and 150-6 are the first It can have bent portions 165, 154 in the direction.

[0142] According to another embodiment, each of the fifth and sixth upper elastic members 150-5 and 150-6 The connecting frame 154 is different from that shown in FIG. 2-2 frame connecting portion 163-2 in the first direction. In this case, the first and second lower elastic members 160-1 and 160-2 shown in FIG. The bent portions 165 of the first and second lower elastic members can be omitted. Each of 160-1 and 160-2 does not have a bent portion in the first direction, and the fifth and sixth upper Each of the side elastic members 150-5 and 150-6 may have a bent portion 154 in the first direction. Cut.

[0143] According to yet another embodiment, the first and second lower elastic members 160-1 and 160-2 are Each bent portion 165 is different from that shown in FIG. 12 and is connected to the second-second frame connecting portion 163. The first outer frame 155 can be folded in the first direction from the first outer frame 155 to the second outer frame 155. In this case, the fifth and sixth upper elastic members 150-5 and 150-6 shown in FIG. The connecting frame 154 can be omitted. In this manner, the first and second lower elastic members 16 Each of the fifth and sixth upper sides 160-1 and 160-2 has a bent portion 165 in the first direction. Each of the elastic members 150-5 and 150-6 may have no bent portion in the first direction. Cut.

[0144] According to yet another embodiment, different from that shown in FIG. There may also be a metal piece (not shown) that is inserted or attached to the In this case, the 1-2 outer frame 155 and the 2-2 frame connecting portion 163-2 are made of metal. In this case, the bent portion 165 and the bent portion 166 shown in FIG. The connecting frame 154 can be omitted. In this manner, the first and second lower elastic members 1 60-1, 160-2 and the fifth and sixth upper elastic members 150-5, 150-6 Each may have no bends in the first direction.

[0145] As described above, at least one of the upper elastic member and the lower elastic member is folded in the first direction. It may also have a curved shape, and both the upper elastic member and the lower elastic member may be folded in a first direction. It is also possible that the shape does not have a curved shape.

[0146] On the other hand, the 1-2 outer frame 155 is the 2-th outer frame, similar to the 1-1 outer frame 152b. -2 holes 157 may further be included.

[0147] According to an embodiment, the first to sixth upper elastic members 150-1, 150-2, 150-3, 1 The first-first outer frames 152a and 152b of 50-4, 150-5, and 150-6 are diagonal The first and second outer frames 155 can be arranged in a diagonal direction. That is, the first upper elastic member 150-1 may be disposed so as to correspond to the first upper elastic member 150-2. The first outer frame 152a and the third upper elastic member 150-3 are connected to the first outer frame 152a. The second upper elastic members 150- The second 1-1 outer frame 152b and the fourth upper elastic member 150-4 The fifth upper elastic portion 152b may be disposed in a diagonal direction. The first-second outer frame 155 of the sixth upper elastic member 150-5 and the first-second outer frame 156 of the sixth upper elastic member 150-6 The side frames 155 can be arranged to match the diagonal direction.

[0148] Alternatively, according to another embodiment, although not shown, the first to sixth upper elastic members 1 50-1, 150-2, 150-3, 150-4, 150-5, 150-6, 1st-1st The side frames 152a and 152b are arranged in a diagonal direction, but are not aligned in the same direction. The first and second outer frames can be arranged at any two of the four corners shown in FIG. Frame 155 is arranged diagonally instead of being aligned with the other two corners. Alternatively, the electrodes may be arranged at two corners.

[0149] Meanwhile, the first and second lower elastic members 160-1 and 160-2 are attached to a plurality of support members 220. From the circuit board 250 via the fifth and sixth upper elastic members 150-5 and 150-6 connected to each other. It can be seen that the first coil 120 receives power from the first lower elastic member 122. 160-1 is connected to the circuit board via the sixth upper elastic member 150-6 and the sixth support member 220-6. 250, and the second lower elastic member 160-2 is connected to the fifth upper elastic member 150-5 and the fifth It can be connected to the circuit board 250 via the support member 220-5.

[0150] Referring to FIG. 11, a plurality of first lower support protrusions 117 are provided on the lower surface of the bobbin 110. The second inner frames 161-1 and 161-2 of the lower elastic member 160 are connected to the bobbin 110. The housing 140 has a lower surface provided with a plurality of second lower support protrusions 14. 5 is provided to protrude from the second outer frames 162-1 and 162-2 of the lower elastic member 160 and the housing. The ring 140 can be coupled and secured.

[0151] In this case, the number of the second lower support protrusions 145 is greater than the number of the first lower support protrusions 117. This is because the length of the second frame connecting portion 163-2 of the lower elastic member 160 is This is because the length is longer than the length of the first frame connecting portion 163-1.

[0152] As described above, the lower elastic member 160 has a structure divided into two parts, so that the first upper support The number of the first and second lower support protrusions 117, 145 is also sufficiently large, as is the number of the support protrusions 143. By providing the lower elastic member 160, the floating phenomenon that may occur when the lower elastic member 160 is separated is prevented. It is possible.

[0153] On the other hand, when the lower elastic member 160 is not a divided structure but a single body, the first and second It is necessary to provide the second lower support projections 117, 145 in the same number as the first upper support projections 143. Because, even with only a small number of the first and second lower support protrusions 117, 145, the lower elastic portion This is because the material 160 can be stably coupled to the housing 140 .

[0154] However, unlike the embodiment, the lower elastic members 160 are not electrically connected to each other. When the first and second lower elastic members 160-1 and 160-2 are separated, the separated first and In order to fix the second lower elastic members 160-1 and 160-2, a sufficient number of first and second lower elastic members are provided. Support protrusions 117 and 145 can be provided. Therefore, the first and second lower elastic members 16 Incomplete coupling between the housing 140 and the 0-1 and 160-2 can be prevented. .

[0155] Next, referring to FIG. 11, the first and second lower support protrusions 117 and 145 are It may have a hemispherical shape, similar to the projection 143, but may alternatively have a cylindrical or prismatic shape. However, the embodiment may have the shape of the first and second lower support protrusions 117, 145. Not limited to.

[0156] Referring to FIG. 12, according to the embodiment, first and second lower elastic members 160-1 and 160-2 are provided. The first lower support protrusions 161-1 and 161-2 of the second inner frames 161-1 and 161-2 of the first inner frames ... 17, a third through hole 161a having a corresponding shape may be formed at a position corresponding to the third through hole 161a. The first lower support protrusion 117 and the third through hole 161a can be fixed by heat fusion, and the .... It can also be fixed with an adhesive member such as.

[0157] In addition, the second outer frames of the first and second lower elastic members 160-1 and 160-2 are The second lower support protrusion 145 is provided at a position corresponding to the fourth through hole in the first and second lower support protrusions 162-1 and 162-2. In this case, the second lower support protrusion 145 and the fourth through hole 162a may be formed. A can be fixed by heat fusion or by using an adhesive such as epoxy. .

[0158] In addition, the distance between the first and second lower support protrusions 117, 145 is set to prevent interference with surrounding components. That is, the bobbin 110 can be appropriately set within a range where the above-mentioned The first and second lower support protrusions 117, 145 are spaced apart from each other symmetrically about the center of the support. They can also be spaced apart.

[0159] The upper elastic member 150 and the lower elastic member 160 are each made of a leaf spring. However, the embodiment is not limited to the material of the upper and lower elastic members 150 and 160. .

[0160] On the other hand, the bobbin 110, the housing 140, and the upper and lower elastic members 150, 160 are Assembled by heat fusion and / or bonding using adhesives, etc. In this case, the assembly is performed in the order listed below. After the heat fusion, the parts are fixed by bonding using an adhesive. Able to complete scheduled tasks.

[0161] For example, first, the second inner frame 161-1 of the bobbin 110 and the lower elastic member 160; 161-2, and the second outer frame 161-3 of the housing 140 and the lower elastic member 160 are assembled. When assembling the arms 162-1 and 162-2, the first lower support projection 117 of the bobbin 110 The third through-hole 161a and the housing 140 are connected to the first lower support protrusion 117. A second lower support protrusion 145 and a fourth through hole 162a coupled to the second lower support protrusion 145 Third, the first inner frame of the upper elastic member 150 can be fixed by heat sealing. When the sensor board 180 is assembled first, the elastic member contact portions 184-1 and 184 184-2, 184-3, 184-4 and the first to fourth upper elastic members 150-1, 150-2, 150-3, 150-4. The first inner frames 151 of 0-3 and 150-4 can be fixed by heat fusion. Then, the housing 140 and the upper elastic member 150 are connected to the first and fourth positions. 1-2 When fixing the outer frames 152a, 152b, and 155, the first The second through hole 157 connected to the first upper support protrusion 143 is used for applying adhesive such as epoxy. However, this assembly sequence can be changed. That is, the first to third assembly steps are heat fusion, and the last fourth step is Bonding can be performed when the layers are fixed. Therefore, there is no distortion or other deformation during heat fusion. This can be accompanied by a slight delay, but can be compensated for by bonding at the final stage.

[0162] In the above embodiment, the upper two of the four electrically isolated upper elastic members 150 are Power is supplied to the first sensor 170 via the side elastic member 150, and the first sensor 170 The feedback signal is output via the other two upper elastic members 150 which are electrically isolated. The second elastic member 160 is electrically isolated from the first elastic member 160 and is electrically connected to the circuit board 250. Power can be supplied to one coil 120. However, embodiments are not limited to this.

[0163] That is, according to another embodiment, the function of the plurality of upper elastic members 150 and the function of the plurality of lower elastic members The roles of the materials 160 can be interchanged. The first coil 120 is electrically connected to the upper elastic members 150 through the two upper elastic members 150. A force is applied to the two lower elastic members 160 among the four electrically isolated lower elastic members. The power is supplied to the first sensor 170 via the The back signal is electrically isolated from the other two lower elastic members 160 via the circuit board 250. This is clear from the figures mentioned above, even if not shown. It is.

[0164] In the following, when the roles of the upper elastic member 150 and the lower elastic member 160 are interchangeable, The upper and lower elastic members 150, 160 will be briefly examined as follows. The side elastic members are divided into upper elastic members 150 as shown in FIG. The lower elastic member 160 is divided into two parts as shown in FIG. 11, and the sensor board 180 is The sensor substrate 180 is connected to the pin 110, and the elastic member contact portion of the sensor substrate 180 faces the upper elastic member 150. Instead of the above direction, the elastic member 160 protrudes in a direction toward the lower elastic member 160. Can be combined with 0.

[0165] The lower elastic member includes at least four first to fourth lower elastic members separated from each other, The sensor 170 is connected to a plurality of support members 220 via the first to fourth lower elastic members. It is possible.

[0166] Each of the first to fourth lower elastic members is a first inner frame that is coupled to the bobbin 110. 1-1 outer frame 1-1 is connected to the housing 140 and the support member 220. a first frame connecting portion connecting the first inner frame and the first-1 outer frame; may include.

[0167] The upper elastic member includes at least two first and second upper elastic members separated from each other; The first coil 120 is connected to a plurality of supporting members 220 via first and second upper elastic members. It is possible.

[0168] Each of the first and second upper elastic members includes at least one elastic member coupled to the bobbin 110. a second inner frame and at least one second outer frame coupled to the housing 140; and connecting at least one second inner frame and at least one second outer frame. The second-first frame connector may include a second-first frame connector.

[0169] The at least one second outer frame includes a plurality of second outer frames, the first and second Each of the upper elastic members is a second-second frame connecting portion that connects a plurality of second outer frames. It may further include:

[0170] The at least four lower elastic members further include fifth and sixth lower elastic members separated from each other. Each of the fifth and sixth lower elastic members is formed in a direction perpendicular to the first direction. The first and second outer frames are connected to the housing 140 and the support member 220. It may include

[0171] Each of the first and second upper elastic members is connected to the lower elastic member from the 2-2 frame connecting portion. The fifth and sixth lower portions may further include a bent portion bent in the first direction toward the fifth and sixth lower portions. Each of the elastic members further includes a connecting frame that connects the bent portion and the first and second outer frames. It can include.

[0172] Alternatively, each of the fifth and sixth lower elastic members is connected to the first outer frame and the second outer frame. The device may further include a connection frame bent in the first direction up to the frame connection portion. In this case, the bent portion, the connecting frame and the first and second outer frames can be integrally formed. Cut.

[0173] Alternatively, each of the first and second upper elastic members is connected to the second-2 frame connecting portion. The second outer frame may further include a bent portion bent in a first direction.

[0174] Alternatively, the lens driver may further comprise a metal piece that is inserted or attached to the housing 140. The first-second outer frame and the second-third frame connecting portion are connected by a metal piece. It is possible.

[0175] Each of the first and second upper elastic members is disposed at a corresponding one end of the first coil 120. A coil frame connected to the wire, and the coil frame and at least one second inner frame. and a second-third frame connector that connects the first and second frame connectors.

[0176] Meanwhile, referring to FIG. 3, FIG. 6, FIG. 7, FIG. 10 and FIG. 11, the housing 140 has a side surface A plurality of third stoppers 149 may be provided in a protruding manner. When the lens driving unit 1 moves in the second and third directions, the cover member 300 and the housing 1 This is to prevent the body of the housing 140 from colliding with the housing 140 when an external impact occurs. This can prevent the surface from directly colliding with the inner surface of the cover member 300. As shown in FIG. 1, the third stoppers 149 are arranged at regular intervals on the outer surface of the housing 140, two at a time. However, the embodiment is not limited to the position and number of the third stoppers 149.

[0177] Although not shown, a fourth stopper is further disposed on the lower side of the housing 140. The fourth stopper may be provided to protrude from the lower surface of the housing 140. The fourth stopper is provided so that the bottom surface of the housing 140 is in contact with the base 210 and / or the circuit board 210 (to be described later). The fourth stopper can prevent the plate 250 from colliding with the plate 250. During normal operation, the base 210 and / or the circuit board 250 are spaced apart at a fixed distance. With this configuration, the housing 140 can maintain the base on the lower side. 210 on the upper side and a cover member 300 on the lower side, so that the optical axis direction is not affected by the upper and lower Therefore, the housing 140 can maintain its height in a plane perpendicular to the optical axis. Shifting operations can also be performed in second and third directions, i.e., forward, backward, left and right directions.

[0178] The first lens driving unit according to the embodiment uses a first sensor 170 and detects the position of the bobbin 110. The position of the bobbin 1 is detected in the first direction of the z-axis, which is the optical axis direction, or in a direction parallel to the first direction. The movement of the sensor 10 can be precisely controlled by the position detected by the first sensor 170. This can be realized by feeding back the device to the outside via the circuit board 250. Cut.

[0179] Meanwhile, according to one embodiment, the bobbin 110 is arranged in a first direction, which is the optical axis direction, or in a plane in the first direction. In order to move the magnet in the vertical direction, a magnet 130 (hereinafter, 'AF') is disposed opposite the first coil 120. In addition to the magnet for detecting the position of the first sensor 170, a magnet for detecting the position of the first sensor 170 (hereinafter referred to as a detection magnet) is provided. In this case, the AF magnet 130 may be disposed separately. The interaction between the first coil 120 and the detector magnet may be disturbed by the detector magnet. This is because a magnetic field is generated by the detection magnet. The detection magnet should be positioned so as not to cause an interaction with the AF magnet 130 or causes an interaction with the AF magnet 130, but the bobbin 110 tilts (tilt In order to prevent this, the first sensor 170 is arranged to face a separate detection magnet. In this case, the first sensor 170 is disposed and coupled to the bobbin 110. The detection magnet is disposed, coupled or mounted on the housing 140. Alternatively, the first sensor 170 may be disposed, coupled or mounted on the housing 140. The detection magnet may be disposed, coupled or mounted on the bobbin 110 .

[0180] According to another embodiment, instead of providing a separate detection magnet, the bobbin 110 is optically In order to move the AF magnet in the first direction, which is the axial direction, or in a direction parallel to the first direction, For example, the AF magnet 130 can be used as a detection magnet. The first sensor 170 is not disposed in the housing 140 so as to also function as a magnet. and placing, coupling, or mounting the bobbin 110 so that the bobbin 110 moves with the bobbin 110. Therefore, when the AF magnet and the detection magnet coexist, the two magnets Problems caused by magnet interactions can be fundamentally solved. A magnetic field compensation metal (not shown) is used to minimize the interaction between the magnet and the detection magnet. ) can be eliminated.

[0181] On the other hand, the first lens driving unit includes a first sensor 170 and a It may also include various devices for improving the autofocusing function of the In this case, the device can receive power from the device placement position or via the circuit board 250, and the circuit The method and process of providing the feedback signal to the substrate 250 is the same as that of the first sensor 170. It is possible.

[0182] Meanwhile, referring again to FIG. 2, the second lens driving unit is for image stabilization as described above. A lens driving unit comprising: a first lens driving unit; a base; and a plurality of support members. 220, a second coil 230, a second sensor 240, and a circuit board 250. .

[0183] The first lens driving unit can have the above-mentioned configuration. It can also be replaced with an optical system that implements other types of autofocusing functions. In other words, it uses a voice coil motor type autofocusing actuator. Instead, a single lens moving actuator or a variable refractive index actuator is used. That is, the first lens driving unit may be an optical module that uses an optical Any optical actuator that can perform the fast focusing function can be used. However, a magnet 130 is required to be positioned in correspondence with a second coil 230, which will be described later. needs to be installed.

[0184] FIG. 13 shows an exploded perspective view of the base 210, the second coil 230 and the circuit board 250.

[0185] First, the base 210 of the second lens driving unit, as shown in FIG. 2 and FIG. 13, The base 210 has a substantially rectangular shape in plan view. The cover member 300 is bonded to the base 210. A step portion 211 as shown in FIG. 13 is formed so that an adhesive can be applied when fixing. At this time, the step portion 211 guides the cover member 300 to be joined to the upper side. The end of the cover member 300 can be joined so as to be in surface contact with the other end of the cover member 300. The step portion 211 and the end of the cover member 300 are fixed and sealed with an adhesive or the like. can be done.

[0186] The base 210 may be disposed at a fixed distance from the first lens driving unit. The surface of the base 210 facing the portion where the terminals 251 of the circuit board 250 are formed The support portion 255 may be formed with a corresponding size. The outer surface of the terminal 251 is formed to have a constant cross section without a step portion 211. The terminal portion 253 can be supported.

[0187] The corner of the base 210 has a second recess 212. The corner of the cover member 300 is protruding. When the cover member 300 has the second recess 212, the protruding portion of the cover member 300 is fastened to the base 210 at the second recess 212. This can be done.

[0188] In addition, the upper surface of the base 210 is provided with a second mounting recess 215- in which a second sensor 240 can be disposed. According to an embodiment, the second mounting recess 215-1, A total of two mounting recesses 215-1 and 215-2 are provided, and the second sensor 240 is mounted in the second mounting recesses 215-1 and 215-2. 15-2, the housing 140 is arranged in the second direction and the third direction. To this end, the second mounting recesses 215-1 and 215-2 and The angle between the two second mounting recesses is 90°. The units 215-1 and 215-2 can be arranged.

[0189] At least one surface of the second mounting recesses 215-1 and 215-2 is formed with an inclined surface (not shown). The epoxy for assembling the second sensor 240 can be injected more smoothly. In addition, a separate air hole may be provided in the second mounting recesses 215-1 and 215-2. Although it is possible to not inject epoxy or the like, it is preferable to inject epoxy or the like to attach the second sensor 240. The second mounting recesses 215-1 and 215-2 are located at the positions of the second coil 23. 0 or near the center of the second coil 230. The center of the second sensor 240 may be aligned with the center of the second mounting recess. The electrodes 215-1 and 215-2 may be provided on the sides of the base 210.

[0190] A slot is formed in the cover member 300 at a position corresponding to the step portion 211. The adhesive can be injected through the hole. The adhesive injected through the slot is set low so that the adhesive between the step portion 211 and the cover member 300 is The adhesive material applied to the slot can penetrate into the surface contact position of the end portion. The gap between the opposing surfaces of the cover member 300 and the base 210 is formed through the slot. and configured so that the cover member 300 can be mated and sealed with the base 210. can be achieved.

[0191] In addition, a mounting portion (not shown) for mounting a filter is formed on the lower surface of the base 210. Such a filter can be an infrared blocking filter. However, the present invention is not limited to this, and a separate sensor holder at the bottom of the base 210 may be used. A filter may be disposed on the bottom surface of the base 210. The sensor board on which the image sensor is mounted is combined to form a camera module. It is also possible.

[0192] Meanwhile, the plurality of support members 220 are disposed on the second side portion 142 of the housing 140. For example, as described above, the housing 140 may have a polygonal shape in a plane. In one case, the number of second sides 142 of the housing 140 may be more than one. When the inner lower portion of 140 is octagonal on the bottom surface, the plurality of support members 220 are For example, each of the four second sides 142 may be Two support members 220 are arranged on each of the support members 220, so that a total of eight support members 220 can be provided. Cut.

[0193] Alternatively, two of the four second sides 142 of the housing 140 may be provided. Only one support member 220 is disposed on each of the remaining two second side portions 142. Two support members 220 are arranged on each of the support members 220, and a total of six support members 220 are provided. It is also possible.

[0194] As described above, the support member 220 is required for the first sensor 170 and the first coil 120. The feedback signal output from the first sensor 170 is A via can be formed to provide the signal to the circuit board 250.

[0195] In addition, the support member 220 is provided so that the housing 140 of the first lens driving unit is supported by the second lens driving unit. Then, it moves in the third direction and returns to its original position, so When the support member 220 is placed, the elastic modulus (K) can be balanced: The support member 220 is arranged such that the housing 140 is in the second and / or third planes perpendicular to the optical axis. When moving in the direction, the housing 140 moves finely in the direction of movement or the longitudinal direction of the support member 220. The longitudinal direction is the direction from the top end to the bottom end of each wire of the support member 220. The housing 140 can then be oriented in a direction parallel to the optical axis. In the first direction, the position of the light beam is almost unchanged, and in the second and third directions, the position of the light beam is substantially perpendicular to the optical axis. This allows the camera to move in both directions, improving the accuracy of image stabilization. 220 utilizes the property of being able to stretch in the longitudinal direction.

[0196] For example, as shown in FIG. 12, four first to fourth support members 220-1, 220-2 , 220-3, 220-4 are the four second sides 14 of the eight sides of the housing 140. 2, and the housing 140 is fixed at a certain distance from the base 210. It can be supported at a distance.

[0197] The first to fourth support members 220-1, 220-2, 220-3, and 220-4 according to the embodiment Each is disposed on a second side 142 of the housing 140 and is symmetrical to one another. However, the present invention is not limited to this. That is, The shape and number of the plurality of support members 220 may be determined based on the direction perpendicular to the first direction, for example, the second and third directions. When considering the elastic coefficients mentioned above, the support The number of support members 220 can be eight, as previously described.

[0198] In the above example, the support member 220 is made of suspension wires without a fixed pattern. However, the embodiment is not limited thereto. The support member 200 may be formed in a plate shape having an elastically deformable portion (not shown).

[0199] On the other hand, referring to FIG. 13, the second coil 230 has a fifth through hole penetrating the corner of the circuit member 231. The support member 220 may include a fifth through hole 230a. The support member 220 may be configured to support the circuit board 210 through the fifth through hole 230a. 250. Alternatively, when the second coil 230 is in the form of a FP coil, In this case, an OIS (Optical Image Stabilizer) is installed in a part of the FP coil. ) coil 232 may be formed or arranged. Also, in the second coil 230 The fifth through-hole 230a is not formed in the portion where the fifth through-hole 230a is formed, and the support portion 230b is not formed in this portion. Material 220 may also be electrically soldered.

[0200] The second coil 230 is arranged to face the magnet 130 fixed to the housing 140. As an example, the second coil 230 may be disposed on the outside of the magnet 130. Alternatively, the second coil 230 may be disposed below the magnet 130. They can be mounted at a fixed distance apart.

[0201] According to the embodiment, as illustrated in FIG. 13, the second coil 230 is disposed on the fourth side of the circuit board 250. A total of four can be attached to the side, but this is not limited thereto, and the second Only two can be installed, one for one direction and one for the third direction, or four or more In the embodiment, the shape of the second coil 230 is attached to the circuit board 250. A circuit pattern is formed in the shape of a square, and a second coil 230 is disposed on the upper part of the circuit board 250. However, the present invention is not limited to this. In this case, the circuit is not formed in the shape of the second coil 230, but is disposed separately on the upper part of the circuit board 250. Alternatively, the second coil 230 may be formed by winding a wire in a doughnut shape. Alternatively, the second coil 230 is formed in the form of an FP coil and is electrically connected to the circuit board 250. It is also possible to configure it as follows.

[0202] The circuit member 231 including the second coil 230 is disposed on the upper side of the base 210. 250. However, this is not a limitation. The coil 230 may be arranged in close contact with the base 210 or may be arranged at a certain distance apart. Alternatively, the wiring board 250 may be formed on a separate substrate, which may then be laminated and connected to the circuit substrate 250. It is also possible.

[0203] As described above, the magnet 130 and the second coil 23 are arranged to face each other. 0 interaction causes the housing 140 to move in the second and / or third directions to compensate for camera shake. For this purpose, the first to fourth support members 220 are provided as housings. The base 210 supports the nut 140 so as to be movable in second and third directions perpendicular to the first direction. It is possible.

[0204] On the other hand, the second sensor 240 is rotatable relative to the base 210 in second and third directions perpendicular to the optical axis. The second sensor detects the displacement of the first lens driving unit. 240 is disposed on the center side of the second coil 230 with the circuit board 250 in between, and is disposed inside the housing 1. That is, the second sensor 240 can detect the movement of the second coil 23. 0, but the second coil 230 is disposed on the upper surface of the circuit board 250. A second sensor 240 may be attached to the lower surface. The sensor 240, the second coil 230 and the magnet 130 may be arranged coaxially. Cut.

[0205] The second sensor 240 may be a Hall sensor, and detects changes in magnetic force. Any sensor capable of detecting the temperature of the object can be used. 13, a total of two sides of the base 210 disposed under the circuit board 250 are provided. The second sensor 240 can be mounted on the base 210. The second mounting recesses 215-1 and 215-2 can be inserted and disposed therein.

[0206] The circuit board 250 includes sixth through holes 250a1 and 250a2 through which the support member 220 can pass. The support member 220 can be inserted through the sixth through holes 250a1 and 250a2 of the circuit board 250. The corresponding circuit pattern that can be arranged on the bottom surface of the circuit board 250 is then soldered or the like. The electrodes can be electrically connected to each other.

[0207] The circuit board 250 may further include a seventh through hole 250b. The side support protrusion 217 and the seventh through hole 250b are joined and fixed by heat fusion as shown in FIG. The mounting bracket 10 may be fixed in place or secured in place with an adhesive such as epoxy.

[0208] The circuit board 250 may further include a plurality of terminals 251. According to an embodiment, the circuit board 250 may be formed with a bent terminal portion 253. At least one terminal 251 is attached to one of the bent terminal portions 253. It is possible.

[0209] According to the embodiment, external power is supplied via a plurality of terminals 251 attached to the terminal portion 253. , the first and second coils 120, 230, and the first and second sensors 170, 240 It can also supply power and output a feedback signal from the first sensor 170. The terminal 251 is attached to the terminal portion 253. The number can be increased or decreased depending on the type of components that need to be controlled.

[0210] According to an embodiment, the circuit board 250 may be, but is not limited to, a FPCB. The terminal configuration of the circuit board 250 is provided on the surface of the base 210 in a surface electrode manner. It is also possible to form it directly by using the above method.

[0211] As mentioned above, the circuit board 250 is necessary for the first coil 120 and the first sensor 170. The first sensor 170 is connected to the power supply 160. The power supply 160 is connected to the power supply 160. This allows the displacement of the bobbin 110 to be adjusted.

[0212] Meanwhile, the lens driving device 100 according to the above-mentioned embodiment is applicable to various fields, for example, camera modules. For example, the camera module can be mounted on a mobile phone ( It can also be applied to mobile devices such as wireless telephones, notebook PCs, etc. A wide variety of multimedia devices such as cameras, PDAs, smartphones, and toys are In the field of imaging, image input devices such as information terminals for surveillance cameras and video tape recorders etc.

[0213] The camera module according to the embodiment includes a lens barrel coupled to a bobbin 110, an image It may include a sensor (not shown), a circuit board 250 and an optical system.

[0214] The lens barrel is as described above, and the circuit board 250 has an image sensor mounted thereon. This can form the bottom surface of the camera module, as well as the part that covers the rear surface of the camera module.

[0215] The optical system also includes at least one lens that transmits an image to the image sensor. In this case, the optical system is provided with an autofocus function and an image stabilization function. An actuator module that can be mounted on the autofocal plane can be mounted on the autofocal plane. The actuator module that performs the cuing function can be configured in various ways. Coil unit motors are generally used. The lens driving device according to the above embodiment is An actuator module that performs both autofocusing and image stabilization functions It can play the role of

[0216] The camera module also has an infrared (IR) blocking filter. The infrared blocking filter may be disposed on the image sensor. In this case, the base plate shown in Figure 2 serves to block infrared light from entering the base plate. In the case of the 210 base, an infrared blocking filter is attached at the position corresponding to the image sensor. The base can be attached to a holder member (not shown) and can be coupled to the holder member. The support 210 can support the underside of the holder member.

[0217] A separate terminal member is attached to the base 210 for electrical connection to the circuit board 250. It is also possible to form the terminal integrally with the surface electrode. Meanwhile, the base 210 serves as a sensor holder to protect the image sensor. In this case, a protrusion may be formed downward along the side of the base 210. However, this is not a required configuration, and a separate sensor holder (not shown) is required. Alternatively, the sensor 210 may be configured to be disposed at the bottom of the sensor 210 to perform its function.

[0218] In the lens driving device 100 according to the embodiment having the above-mentioned configuration, the magnet 13 0 is used to perform autofocusing and image stabilization for the first and second lens drive units. The action can be embodied.

[0219] In the case of the lens driving device 100 according to the above-mentioned embodiment and the camera module including the same, A first sensor 170 is disposed, coupled or mounted on the housing 140 or the bobbin 110. Use F magnet 130 as a sensor magnet or use a sensor magnet The AF magnet 130 can be used as a sensor magnet. Or, use a magnet for the sensor so that it does not interact with the magnet for AF 130. When the magnet for the sensor is arranged in this manner, it is necessary to ensure that the magnet for the sensor does not affect the magnet for AF 130. This prevents the bobbin 110 from being tilted, improving the accuracy of the feedback signal and This allows the weight of the housing 140 to be reduced and response to be improved without increasing the number of Of course, the magnets for autofocusing and image stabilization are separate. It can also be configured.

[0220] Other Examples FIG. 14 is a schematic cross-sectional side view of a lens driving device 400 according to another embodiment, and FIG. 15 is a schematic cross-sectional side view of the lens driving device 400 shown in FIG. 16 is a perspective view of an embodiment of the first elastic portion 441 shown in FIG. 14. 1 shows a perspective view according to an embodiment of the present invention.

[0221] 14 to 16, the lens driving device 400 according to the embodiment includes a moving element 410, The actuator may include a stator 420, a first sensor 430, and an elastic unit 440. The lens driving device 400 according to the embodiment further includes a cover can 450 and a substrate (not shown). It can also include.

[0222] The cover can 450 is provided with a movable element 410, a stator 420, a first sensor 430, and a spring 440. The elastic member (or elastic unit) 440 is housed in the base 423, and the elastic member 440 is attached to the base 423. The external appearance of the lens driving device 400 can be achieved.

[0223] The cover can 450 has an inner surface that is in close contact with the side surface of the base 423, which will be described later. 423, protecting the internal components from external impacts and preventing the penetration of external contaminants. It can also have a preventative function.

[0224] In addition, the cover can 450 is designed to protect the device from external radio interference caused by mobile phones, etc., as described below. It also has the function of protecting the components of the camera module. The can 450 may be made of a metallic material.

[0225] The cover can 450 may be formed from the housing 422 itself, which will be described later. Alternatively, the housing 422 can be molded inward and secured in place. The cover can 450 has an opening on the upper surface thereof through which a lens portion (not shown) is exposed. It can be done.

[0226] The moving element 410 includes a lens portion (not shown) and a bobbin 411, and further includes a coil portion 412. It can be included in the following:

[0227] Here, the lens portion (not shown) may be, but is not limited to, a lens barrel. Any holder structure capable of supporting a lens without being damaged is included. In the embodiment, the lens unit is a lens barrel. The lens unit is attached to the upper side of a base 423 described later, and corresponds to the image sensor. Such a lens portion may include one or more lenses (not shown). can.

[0228] The bobbin 411 can be coupled with the lens portion to fix the lens portion. The coupling method between the lens barrel and the bobbin 411 is the same as that of the bobbin 110 and the lens barrel shown in FIG. The method may be the same as the combination method.

[0229] In addition, a coil portion 412, which will be described later, is wound or attached to the outer circumferential surface of the bobbin 411. The guide portion 411a may be formed to guide the ball. The bobbin 411 may be integrally formed with the outer surface of the bobbin 411 and may be connected along the outer surface of the bobbin 411. They may be formed continuously or spaced apart at a predetermined interval.

[0230] At least one of the upper and lower surfaces of the bobbin 411 is provided with a base 42, which will be described later. The first elastic portion 441 or the second elastic portion 442 is provided on the upper side of the bobbin 411 so as to support the bobbin 411. At least one of the portions 442 may be formed with a fastening protrusion to be fastened.

[0231] The coil portion 412 is guided by the guide portion 411a and wound on the outer surface of the bobbin 411. Alternatively, the coil part 412 may be wound in advance and attached to the guide part 411a. Alternatively, four separate coils may be arranged at 90° intervals on the outer surface of the bobbin 411. Such a coil unit 412 can receive power applied from a substrate as described below. The coil unit 41 can generate an electromagnetic field by receiving the electromagnetic force from the first elastic portion 441. When power is applied to the magnet portion 421 and the coil portion 412, they electromagnetically interact with each other. It is possible.

[0232] The stator 420 supports the slider 410, and includes a magnet section 421, a housing 422, and a bearing 423. The device may include a base 423.

[0233] The magnet part 421 is arranged so as to be positioned in correspondence with the outer surface of the coil part 412. The housing 422 can be attached with an adhesive or the like, and the four By installing them at intervals such as at the corners of the building, the internal volume can be used efficiently. do.

[0234] Alternatively, the magnet portion 421 is provided with the coil portion 41 on the four sides inside the housing 422. It can also be mounted opposite 2.

[0235] The shape of the magnet included in the magnet section 421 may be a triangular prism, a rectangular prism, a trapezoidal prism, etc. The shape can be any prism, and the prism can also include a curve. During the processing, some of the corners of the magnet can be processed into a curved shape.

[0236] The housing 422 is connected to the inner surface of a cover can 450 that defines the exterior of the lens driving device 400. The housing 422 and the cover can 450 may be formed in a corresponding shape. The housing 422 and the cover can 450 are not separate, but are integrally formed to form the lens drive device. It can also have the appearance of device 400.

[0237] In an embodiment, the housing 422 or cover can 450 may have at least one upper or lower One side is open, and one end is connected to the elastic member 440 to support the moving element 410. In addition, the housing 422 has a shape corresponding to the magnet part 421 on the side or corner. The magnet may include a fastening hole or fastening recess formed in the magnet. The net part fastening hole or fastening recess is similar to the magnet mounting part 141a shown in FIG. It can have a shape.

[0238] The housing 422 is made of an insulating material similar to the housing 140 described above. It can be made of extrusion material taking into consideration the properties.

[0239] In addition, the housing 422 has a protruding portion at a predetermined interval on the upper side thereof. A stopper 422a is provided to the upper surface of the can 450 to absorb shock. The stopper 422a may be integrally formed with the housing 422. The wire 412 may be formed on the bobbin 411 .

[0240] The base 423 supports at least one of the movable element 410 and the housing 422. The bottom of the container has a circular recess 423a in the center so that the bottles 411 can be spaced apart. In the center of the recess 423a, a recess for restricting the downward movement of the bobbin 411 can be formed. A limiting protrusion 423b may be formed to limit the length of the groove.

[0241] The base 423 is a sensor base that protects an image sensor (not shown) which will be described later. In this case, the base 423 is inserted downward along the side of the base 423. A protrusion can be formed on the surface of the substrate, which is an infrared (IR) blocking material. Provision may be made for placement of a cut-off filter (not shown).

[0242] In this case, the IR blocking filter is attached to a through hole formed in the center of the base 423. It can be equipped with an IR filter or a blue filter. In addition, the IR blocking filter can be made of, for example, a film or glass material. The optical filter may be a flat optical filter such as a cover glass for protecting an imaging surface or a cover glass. An infrared blocking coating material may be applied to the filter. In addition to the sensor holder 3, a separate sensor holder may be located below the base 423.

[0243] The base 423 also has a protruding portion at the upper corner that contacts the inner surface of the cover can 450. One or more fixing protrusions may be formed to connect or engage the cover. It can easily guide the fastening of the 450-carrying can and also ensures a firm fixation after fastening. Make sure that.

[0244] That is, the stator 420 according to the embodiment fixes the moving element 410 so as to be positioned inside. The lens section is moved to adjust the focus of the image.

[0245] The first sensor 430 detects the movement of the moving element 410 by detecting the movement of the magnet part 421. It can detect changes in the magnetic field and precisely control the actuator. For example, the first sensor 430 may function similarly to the first sensor 170 shown in FIG. can be done.

[0246] In an embodiment, the first sensor 430 is disposed on the outer surface of the bobbin 411 and is disposed on the housing The first sensor 430 detects a change in the magnetic field of the magnet unit 421 disposed in the first sensor 422. Thus, in the embodiment, the magnet portion 421 is attached to the stator 420. By arranging the slider 410 in this manner, the weight of the slider 410 can be reduced, and the driving power for the lens can be reduced. This allows the lens driving device 400 to be made more compact.

[0247] The first sensor 430 is disposed in a recess formed in a part of the outer surface of the bobbin 411. In addition, a coil portion 412 is disposed on the outer surface of the bobbin 411. The first sensor 430 may be disposed inside the coil portion 412. The first cell is blocked by the coil portion 412 and cannot be seen from the outside. The sensor 430 may also be disposed outside the coil portion 412.

[0248] As shown in the figure, the first sensor 430 includes four terminals 431 to 434. The terminals of the first sensor 430 may vary depending on the type of the first sensor 430. For example, the four terminals 431 to 434 are a positive electrode, a negative electrode, a ground, and an output. Therefore, the number of the second elastic parts 442, which will be described later, is equal to the number of the terminals of the first sensor 430. The spring may comprise at least two leaf springs so as to

[0249] Such a first sensor 430 is closer to the coil part 412 than to the magnet part 421. However, the magnetic field formed by the magnet of the magnet unit 421 can be arranged as shown in FIG. Considering that the field strength is several hundred times greater than the strength of the electromagnetic field created by the coil, Therefore, the influence of the coil section 412 on the detection of the movement of the movable element 410 may not be taken into consideration. Cut.

[0250] The elastic member 440 may include a first elastic portion 441 and a second elastic portion 442 .

[0251] The first elastic portion 441 is connected at both ends to one side of the bobbin 411 and the stator 420. By this, it is possible to apply power to the coil portion 412 of the stator 420. The stator 420 is connected to the bobbin 411 at one end and the stator 420 at the other end. , may be electrically connected to the first sensor 430 .

[0252] Here, the first elastic portion 441 and the second elastic portion 442 are disposed on the respective sides of the housing 422. Although the springs may be arranged separately in the plate, for production efficiency, The sheet can be folded and cut into a leaf spring shape.

[0253] The first elastic portion 441 is connected to one side of the bobbin 411 and the stator 420. The second elastic portion 442 may mean the upper or lower side of the stator 420. The other side of the connected bobbin 411 and the stator 420 is the lower side of the bobbin 411 and the stator 420. Or it can mean the upper side.

[0254] For example, the first elastic portion 441 is disposed on the upper side of the bobbin 411, and the second elastic portion 442 is disposed on the In this case, the first elastic portion 441 may be disposed on the lower side of the upper elastic portion 411. The second elastic portion 442 is disposed like the lower elastic member 160. It can be done.

[0255] Alternatively, the first elastic portion 441 is disposed below the bobbin 411, and the second elastic portion 442 is disposed above the bobbin. In this case, the first elastic portion 441 may be disposed on the upper side of the lower elastic portion 411. The second elastic portion 442 is disposed like the upper elastic member 150. It can be done.

[0256] In the drawing, the first elastic part 441 is disposed under the bobbin 411, and the second elastic part 442 is disposed under the bobbin. Since it is disposed above the control 411, the following description will be based on this.

[0257] 15 and 16, the first elastic portion 441 and the second elastic portion 442 are approximately It has a ring shape, and the inner circumference can be approximately circular to correspond to the shape of the moving part 410, The outer periphery is approximately rectangular so that it can be supported by the shape of the housing 422 or the base 423. This can be done.

[0258] Specifically, the first elastic part 441 and the second elastic part 442 are fastened to the stator 420. The outer portions 441a and 442a are fastened to the bobbin 411 by fastening projections of the bobbin 411. The inner portion 441b, 442b has fastening holes corresponding to the ridges, and the outer portion 441a, The connecting portions 441c and 442a connect the inner portions 441b and 442b and provide elasticity. As shown in the figure, the connecting portions 441c and 442c may include an inner portion 441c. b, 442b and one or more bent portions integrally formed between the outer portions 441a, 442a It can be.

[0259] The outer portion 441a of the first elastic portion 441 is disposed between the lower end of the housing 422 and the base 423. Alternatively, the inner portion 441b may be disposed on the base 423, with the inner portion 441b disposed below the bobbin 411. It can be fastened to a surface to support the bobbin 411 and provide a restoring force to the bobbin 411 .

[0260] The first elastic portion 441 includes a first spring 441aa and a second spring 441b arranged to be spaced apart from each other. The power applied from the substrate (to be described later) is The spring 441aa and the second spring 441bb can be input or output. do.

[0261] The first spring 441aa and the second spring 441bb are leaf springs having symmetrical shapes. It can be made of a single spring or a single leaf spring, but the power input It is preferable to use a separate leaf spring for output. Here, the first spring 441aa and the second spring 441bb are arranged to move the movable element 410 in a first direction (for example, z A second direction (e.g., x-axis direction) or a third direction (e.g., y-axis direction) that is perpendicular to the The axial direction of the two plates can be symmetrical to each other.

[0262] The first spring 441aa and the second spring 441bb are soldered to the substrate. Terminals 441d are formed by bending the outer portions 441a and 442a. For example, both ends of the coil portion 412 wound around the bobbin 411 can be The first spring 441aa and the inner portion 441b of the second spring 441bb are electrically are formed on the first spring 441aa and the second spring 441bb. The terminal 441d is fixed to the side of the base 423 and is electrically connected to a substrate to be described later. With such a wiring structure, power can be supplied to the coil section 412. This can be done.

[0263] Meanwhile, the second elastic portion 442 is arranged so as to match the number of terminals provided on the first sensor 430. The suspension may comprise at least two leaf springs. In an embodiment, the first The sensor 430 has four terminals 431, 432, 433, and 434. The second elastic portion 442 is divided into four parts, and the four parts are spaced apart from each other in a symmetrical shape. Cut.

[0264] That is, the individual leaf springs 442aa, 442b of the divided second elastic portion 442 are 2bb, 442cc, and 442dd, the inner portion 442b of each of them is connected to the first sensor 430. The outer portions 442a are electrically connected to each other and are provided on the outside of the housing 422. A surface formed on a wire (not shown) or a metal member (not shown) attached to the housing The surface may be electrically connected to a substrate, which will be described later, via a metal layer or the like.

[0265] In an embodiment, electrical connections between the components may be implemented by soldering.

[0266] Meanwhile, the lens driving device 400 according to the above embodiment is the lens driving device shown in FIG. Similar to the mobile device 100, the present invention can be applied to various fields, for example, a camera module.

[0267] For example, the lens according to the embodiment may be a camera module including the lens driving device 100. When the driving device 400 is applied to a camera module, the camera module is not shown. However, not only the lens driving device 400 but also the printed circuit board and the image sensor are also mounted. can be included in.

[0268] An image sensor (not shown) is mounted on the center of the upper side of the printed circuit board (not shown). Various elements (not shown) for driving the camera module can be mounted on the board. In addition, the printed circuit board can supply power for driving the lens driving device 400 according to the embodiment. In order to apply the voltage, the coil portion 41 is connected to the terminals 441c and 441d of the first elastic portion 441. 2 is electrically connected to

[0269] The image sensor (not shown) is a lens unit that includes one or more lenses (not shown). The sensor is mounted on the center of the upper surface of the printed circuit board so that it can be positioned along the optical axis. Such an image sensor detects the light signal of an object that enters through a lens. can be converted into an electrical signal.

[0270] As long as it does not contradict the description of the driving device 400 according to the other embodiment, The description of the lens drive device 100 also applies to the drive device 400 according to the other embodiment. It goes without saying that it is possible to achieve the above. The lens driving device 400 according to the other embodiment will be described below. Needless to say, this can also be applied to 100.

[0271] The above description is based on the embodiment, but this is merely for illustrative purposes. The present invention is not limited to the above embodiment, and those skilled in the art will recognize the essential characteristics of the present embodiment. Various modifications and applications not exemplified above are possible within the scope of the invention. For example, the components specifically shown in the embodiments may be modified. and all such modifications and variations are within the scope of the appended claims. should be interpreted as being within the scope of the present invention. MODE FOR CARRYING OUT THEINVENTION

[0272] The embodiment of the invention is fully described in the above "Best Mode for Carrying Out the Invention". It was. [Industrial Applicability]

[0273] The lens driving device and the camera module according to the embodiment are used in a mobile phone (or a mobile phone) It can also be applied to mobile devices such as notebook personal computers, cameras, etc. Lafon, PDA, smart, toy, and many other multimedia fields. In particular, it is applied to image input devices such as information terminals for surveillance cameras and video tape recorders. This is a technology that can be used to

Claims

1. Housing and a bobbin disposed within the housing; A first coil disposed on the bobbin; a first sensor disposed within the housing; a first magnet disposed in the housing and facing the first coil; a second coil disposed under the first magnet and facing the first magnet; A circuit board; an upper elastic member disposed on an upper portion of the housing; a support member connecting the upper elastic member and the circuit board; The housing has a first corner region and a second corner region disposed opposite the first corner region. Including the area, The support member includes a first wire, a second wire, a third wire, and a fourth wire that are separated from each other. Including wire, The first wire and the second wire are disposed in the first corner region, and the third wire and the fourth wire is disposed in the second corner region; The upper elastic member includes a first upper elastic member, a second upper elastic member, and a third upper elastic member, which are separated from each other. a third upper elastic member and a fourth upper elastic member, At least a portion of each of the first and second upper elastic members is disposed in the first corner region. At least a portion of each of the third and fourth upper elastic members is in the second corner region. A lens drive device is disposed.

2. the first to fourth wires are connected to the first to fourth upper elastic members, respectively; The first sensor and the first coil are electrically connected to the circuit board via the support member. The lens driving device according to claim 1 , wherein the lens driving device is connected to a

3. The upper elastic member includes a fifth upper elastic member and a sixth upper elastic member which are separated from each other. Including, The first sensor is connected to four of the six upper elastic members, The first coil is connected to the other two of the six upper elastic members. The lens driving device described above.

4. The first wire is connected to the first sensor, and the third wire is connected to the first coil.

2. The lens driving device according to claim 1, wherein the lens driving device is connected to the lens holder.

5. the support member includes a fifth wire and a sixth wire; The housing has a third corner region and a fourth corner region disposed opposite the third corner region. Including the area, The fifth wire is disposed in the third corner region, and the sixth wire is disposed in the fourth corner region. And, 5. The method of claim 4, wherein the fifth wire and the sixth wire are coupled to the first sensor. The lens driving device according to claim 1 .

6. The second wire is connected to the first coil and the fourth wire is connected to the first sensor.

5. The lens driving device according to claim 4, wherein the lens driving device is connected to the lens holder.

7. a lower elastic member disposed on a lower portion of the housing; The lower elastic member includes at least two first and second lower elastic portions that are separated from each other. Including materials, The first coil is connected to two of the four wires via the first and second lower elastic members. Electrically connected, The lens driving device according to claim 5 , wherein the support member includes a seventh wire and an eighth wire. 。

8. A second magnet disposed in correspondence with the first sensor; a second sensor for detecting a displacement of the housing; 2. The lens driving device according to claim 1, further comprising: a base disposed below the housing. Place.

9. The first sensor is disposed on the housing, and the second magnet is disposed on the bobbin. Placed, The first upper elastic member includes an inner frame coupled to the bobbin, the housing and a frame connecting the inner frame and the outer frame. The lens driving device according to claim 8 , further comprising a arm connection portion.

10. A sensor substrate is included. The lens drive of claim 8 , wherein the first sensor is coupled to the sensor substrate. motion device.

11. The upper elastic member includes a fifth upper elastic member and a sixth upper elastic member which are separated from each other. Including, the sensor substrate is disposed on the bobbin; The sensor substrate includes a main body coupled to the first sensor and the six upper elastic members.

11. The lens of claim 10, including four contacts connecting four of the members to the first sensor. Drive device.

12. The laser according to claim 8, wherein the first and second magnets are integrally formed with each other. Lens drive unit.

13. A horizontal center line extending through the center of the first sensor and perpendicular to the optical axis is located at the center of the first sensor. The first sensor is arranged to be aligned with the upper end of the first magnet in the initial position of the bin. and the first magnet are disposed opposite to each other. motion device.

14. The bobbin is configured to move up and down along the optical axis with respect to the central horizontal line. The lens driving device according to claim 13 .

15. The lens driving device according to claim 1 , A camera module that includes an image sensor.

16. Housing and a bobbin disposed within the housing; A first coil disposed on the bobbin; a magnet disposed in the housing and facing the first coil; A circuit board including a second coil disposed under the magnet and facing the magnet. and, an upper elastic member disposed on an upper portion of the housing; a Hall sensor disposed between the housing and the bobbin; a support member connecting the upper elastic member and the circuit board; The housing has a first corner region and a second corner region disposed opposite the first corner region. , a third corner region, and a fourth corner region disposed opposite the third corner region, The support member includes a first wire, a second wire, a third wire, and a fourth wire which are separated from each other. a fifth wire and a sixth wire; The first wire and the second wire are disposed in the first corner region, and the third wire and The fourth wire is disposed in the second corner region, and the fifth wire is disposed in the third corner region. the sixth wire is disposed in the fourth corner region; The Hall sensor is electrically connected to the circuit board via the fifth wire and the sixth wire. A lens drive unit connected to the

17. The first coil is electrically connected to one of the first wire and the second wire. The lens driving device according to claim 16 .

18. The first sensor is electrically connected to one of the third wire and the fourth wire. The lens driving device according to claim 17 .

19. the first sensor is electrically connected to the other of the first wire and the second wire; The first coil is electrically connected to the other of the third wire and the fourth wire. The lens driving device according to claim 18 .

20. The upper elastic member includes a first upper elastic member connected to the fifth wire and a sixth upper elastic member connected to the sixth wire. a second upper elastic member connected to the wire; Each of the first upper elastic member and the second upper elastic member is coupled to the bobbin. an inner frame coupled to the housing; an outer frame coupled to the inner frame; 17. The lens actuator according to claim 16, further comprising a frame connector that connects the lens actuator to the outer frame. Device.

Images