Lens driving device, and camera device and optical equipment including the same

Abstract

An example includes a housing, a bobbin arranged within the housing, a slide member arranged between the housing and the bobbin and fixed to the housing, a magnet arranged on the bobbin, and a coil arranged on the housing and moving the bobbin in the optical axis direction by interacting with the magnet, wherein the slide member is a magnetic material that exerts an attractive force on the magnet.

Description

[Technical Field]

[0001] The embodiments relate to a lens driving device and a camera device and optical equipment including the same. [Background technology]

[0002] Since it is difficult to apply the voice coil motor (VCM) technology used in existing general camera modules to ultra-compact and low-power camera modules, research into this has been actively conducted.

[0003] Demand and production of electronic products such as smartphones and camera-equipped mobile phones are increasing. Mobile phone cameras are becoming smaller and more pixelated, and as a result, actuators are becoming smaller, larger in diameter, and more multi-functional. To realize high-pixel mobile phone cameras, improved performance and additional functions such as autofocusing, shutter shake reduction, and zoom functions are required. Summary of the Invention [Problem to be solved by the invention]

[0004] The embodiments provide a lens driving device that can reduce manufacturing costs and the space occupied by the yoke, thereby improving design freedom and reducing size, and a camera device and optical equipment including the same.

[0005] The embodiments provide a lens driving device that can reduce the size and manufacturing costs and can stably support an AF moving unit and an OIS moving unit, and a camera device and optical equipment including the same. [Means for solving the problem]

[0006] The lens driving device according to the embodiment includes a housing, a bobbin arranged within the housing, a sliding member arranged between the housing and the bobbin and fixed to the housing, a magnet arranged on the bobbin, and a coil arranged on the housing and moving the bobbin in the optical axis direction by interacting with the magnet, and the sliding member is a magnetic material that exerts an attractive force on the magnet.

[0007] The bobbin may slide along the sliding member in the optical axis direction, the housing may include a groove to which at least a portion of the sliding member is fixed, and the bobbin may include a groove to which at least another portion of the sliding member is inserted and disposed.

[0008] The housing may include a groove into which a lower portion of the slide member is inserted and fixed.

[0009] The housing may include a protrusion protruding from an inner surface of a side of the housing, and the slide member may be fixed to the protrusion.

[0010] At least a portion of the bobbin may be disposed between the magnet and the slide member.

[0011] The sliding member may overlap the magnet in a direction perpendicular to the optical axis direction, in which the magnet and the coil face each other. The sliding member may not overlap the coil in a direction perpendicular to the optical axis direction, in which the magnet and the coil face each other.

[0012] The shortest distance between the slide member and the magnet may be in a direction perpendicular to the optical axis direction, but may be greater than half the length of the magnet in the direction in which the magnet and the coil face each other and less than three times the thickness of the magnet.

[0013] The length of the slide member in the optical axis direction may be 70 percent or more and 150 percent or less of the length of the magnet in the optical axis direction.

[0014] The housing includes a first side, a second side opposite the first side, a third side disposed between the first side and the second side, and a fourth side opposite the third side.

[0015] The coil may be disposed on the first side of the housing, and the magnet may be disposed on a first side of the bobbin opposite the first side of the housing.

[0016] The housing may include a first protrusion protruding from an inner surface of the third side portion and a second protrusion protruding from an inner surface of the fourth side portion, and the slide member may include a first shaft member fixed to the first protrusion and a second shaft member fixed to the second protrusion.

[0017] The first shaft member may be positioned adjacent one end of the magnet, and the second shaft member may be positioned adjacent the other end of the magnet.

[0018] Another embodiment of a lens driving device includes a housing including a first side, a second side located opposite the first side, a third side located between the first side and the second side, and a fourth side located opposite the third side, a bobbin located within the housing, a slide member located between the housing and the bobbin and fixed to the housing, a coil located on the first side of the housing, and a magnet located on a first side of the bobbin facing the first side of the housing, wherein the slide member is a magnetic material that exerts an attractive force on the magnet, and at least a portion of the bobbin is located between the magnet and the slide member.

[0019] A lens driving device according to an embodiment includes a housing, a frame disposed within the housing, a first slide member disposed between the housing and the frame, a first magnet disposed on the frame, and a coil disposed on the housing that moves the frame in a direction perpendicular to the optical axis direction by interacting with the first magnet, and the first slide member is a magnetic material that exerts an attractive force on the first magnet.

[0020] The first slide member is fixed to the housing, and the frame is capable of sliding along the first slide member in a direction perpendicular to the optical axis direction.

[0021] The housing may include a groove in which at least a portion of the first slide member is fixed, and the frame may include a groove in which at least another portion of the first slide member is inserted and positioned.

[0022] The lens driving device includes a second slide member that is coupled to the frame, a bobbin that is disposed within the frame and that contacts the second slide member, a second magnet that is disposed on the bobbin, and a second coil that is disposed in the housing opposite the second magnet and that moves the bobbin in the optical axis direction by interacting with the second magnet, and the second slide member may be a magnetic material that exerts an attractive force on the second magnet.

[0023] A lens driving device according to another embodiment includes a housing, a first frame disposed within the housing, a first slide member disposed between the housing and the first frame, a second frame disposed on the first frame, a second slide member disposed on the first frame and the second frame, a first magnet disposed on the first frame, a second magnet disposed on the second frame, a first coil disposed on the housing and moving the first frame in a first direction perpendicular to the optical axis direction by interacting with the first magnet, and a second coil disposed on the housing and moving the second frame in a second direction perpendicular to the optical axis direction and the first direction by interacting with the second magnet, wherein the first slide member is a magnetic material that exerts an attractive force on the first magnet.

[0024] The second slide member may be a magnetic material that exerts an attractive force on the second magnet, and the first slide member may be fixed to the housing.

[0025] The second slide member may be fixed to the first frame.

[0026] The housing may include a groove that mates with at least a portion of the first slide member.

[0027] The first frame may include a groove in which at least a portion of the first sliding member is disposed. The first frame may include a groove coupled with at least a portion of the second sliding member. The second frame may include a groove in which at least a portion of the second sliding member is disposed.

[0028] The housing may include a first side, a second side located opposite the first side, a third side located between the first side and the second side, and a fourth side located opposite the third side, and each of the first and second frames may include first to fourth sides corresponding to the first to fourth sides of the housing, the first coil may be arranged on the second side of the housing, the first magnet may be arranged on the second side of the first frame, the second coil may be arranged on the fourth side of the housing, and the second magnet may be arranged on the fourth side of the second frame.

[0029] The first slide member may include first to fourth shaft members, each of which may be disposed adjacent to a corresponding one of four corners of the housing.

[0030] The second slide member may include fifth to eighth shaft members, each of which may be disposed adjacent to a corresponding one of four corners of the first frame.

[0031] The lens driving device according to the other embodiment includes a third slide member coupled to the second frame, a bobbin arranged within the first and second frames and in contact with the third slide member, a third magnet arranged on the bobbin, and a third coil arranged in the housing opposite the third magnet and moving the bobbin in the optical axis direction by interacting with the third magnet, and the third slide member may be a magnetic material that exerts an attractive force on the third magnet.

[0032] The third slide member may include two shaft members spaced apart from each other, and at least a portion of the bobbin may be disposed between the third slide member and the third magnet.

[0033] A corner of one end of the first magnet adjacent to the first sliding member may be chamfered, and a corner of one end of the second magnet adjacent to the second sliding member may be chamfered. [Effects of the Invention]

[0034] In the embodiment, the bobbin has a structure provided with a groove that contacts a part of the sliding member, so that the sliding member does not get pinched.

[0035] In the embodiment, the sliding member is magnetic so as to generate an attractive force to the magnet, and the attractive force between the sliding member and the magnet allows the bobbin to be stably supported by the sliding member.

[0036] In the embodiment, since a separate yoke is not required for the sliding member to stably support the bobbin relative to the housing, manufacturing costs can be reduced, the space occupied by the yoke can be reduced, design freedom can be improved, and the size of the lens driving device can be reduced.

[0037] In addition, in the embodiment, since the lower part of the slide member is positioned within the groove of the housing, the height of the slide member in the optical axis direction can be reduced, and therefore the lens driving device can be designed to have a reduced height in the optical axis direction.

[0038] In this embodiment, the sliding member for supporting the bobbin for AF drive and the sliding member for supporting the frame for OIS drive are made of a magnetic material, so that the bobbin and the frame can be supported without the need for a separate yoke.

[0039] Additionally, the embodiment can reduce the size of the lens driver and lower the manufacturing cost.

[0040] In addition, in the embodiment, by cutting a portion of the edges on both ends of the magnet, the space occupied by the magnet 130 can be reduced, thereby improving the space utilization of the lens driving device and achieving a miniaturized lens driving device.

[0041] In addition, in the embodiment, by making the cut surface of the magnet face the slide member, the attractive force between the magnet and the slide member can be increased, and the fixing force (or supporting force) for supporting the bobbin and the fixing force (or supporting force) for supporting the frame can be increased.

[0042] Furthermore, in the embodiment, by forming a protrusion in the groove of the bobbin, it is possible to reduce the friction force between the bobbin and the slide member.

[0043] In the embodiment, the edge portions of the two magnets adjacent to the slide member are removed by chamfering, thereby reducing magnetic field interference between the two adjacent magnets, preventing malfunction of the OIS due to magnetic field interference, and improving the reliability of OIS operation. [Brief explanation of the drawings]

[0044] [Figure 1] FIG. 2 is an exploded perspective view of the lens driving device according to the embodiment.

[0045] [Figure 2] FIG. 2 is a perspective view of the lens driving device with a cover member removed.

[0046] [Figure 3a] FIG.

[0047] [Figure 3b] FIG. 2 is a perspective view of a bobbin, a slide member, and a magnet.

[0048] [Figure 4a] FIG. 2 is a first perspective view of a housing.

[0049] [Figure 4b] FIG. 2 is a second perspective view of the housing.

[0050] [Figure 5] FIG. 2 is a perspective view of the housing, coil, position sensor, capacitor, and circuit board.

[0051] [Figure 6a] 3 is a cross-sectional view of the lens driving device taken along the line AB in FIG. 2. FIG.

[0052] [Figure 6b] 3 is a cross-sectional view of the lens driving device taken along the CD direction in FIG. 2. FIG.

[0053] [Figure 6c] 3 is a cross-sectional view of the lens driving device taken along the EF direction in FIG. 2. FIG.

[0054] [Figure 6d] 3 is a cross-sectional view of the lens driving device taken along the GH direction in FIG. 2.

[0055] [Figure 7] 10A and 10B are diagrams illustrating an attractive force acting between a slide member and a magnet.

[0056] [Figure 8] 10A to 10C are diagrams illustrating an assembly procedure for the lens driving device according to the embodiment.

[0057] [Figure 9] FIG. 2 is a plan view of the housing, the sliding member, the magnet, and the coil.

[0058] [Figure 10] FIG. 10 is a plan view of a magnet, a bobbin, and a sliding member according to another embodiment.

[0059] [Figure 11a]3 is a cross-sectional view of a lens driving device according to another embodiment taken along the EF direction of FIG. 2. FIG.

[0060] [Figure 11b] 11b is a cross-sectional view of the lens driving device of FIG. 11a taken along the GH direction of FIG. 2. FIG.

[0061] [Figure 12] 1 shows an exploded perspective view of a camera device according to an embodiment.

[0062] [Figure 13] FIG. 1 is an exploded perspective view of a lens driving device according to an embodiment.

[0063] [Figure 14] FIG. 2 is a perspective view of the lens driving device with a cover member removed.

[0064] [Figure 15] FIG. 14 is an exploded perspective view of the bobbin and frame of FIG. 13.

[0065] [Figure 16a] FIG. 2 is an exploded perspective view of a bobbin, a magnet, and a slide member.

[0066] [Figure 16b] FIG. 2 is a perspective view of the bobbin, the magnet, and the slide member joined together.

[0067] [Figure 17a] FIG.

[0068] [Figure 17b] FIG. 2 is a perspective view of a housing, a coil, a position sensor, a capacitor, and a slide member combined together.

[0069] [Figure 17c] FIG. 1 is a perspective view of a circuit board, a position sensor, a coil, and a capacitor combined together.

[0070] [Figure 18a] FIG. 2 is a perspective view of a first frame, a magnet, and a sliding member.

[0071] [Figure 18b] FIG. 2 is a first perspective view of a first frame, a magnet, and a sliding member.

[0072] [Figure 18c] FIG. 10 is a second perspective view of the first frame, the magnet, and the sliding member.

[0073] [Figure 18d] FIG. 2 is a perspective view of the first frame, the magnet, and the sliding member joined together.

[0074] [Figure 19a] FIG. 2 is a perspective view of a second frame, a magnet, a sliding member, and a magnet.

[0075] [Figure 19b] FIG. 2 is a perspective view of a second frame, a magnet, and a sliding member.

[0076] [Figure 19c] FIG. 10 is a perspective view of the second frame, the magnet, and the slide member joined together.

[0077] [Figure 20] FIG. 2 is a perspective view of the frame, the magnet, and the slide member joined together.

[0078] [Figure 21a] 15 is a cross-sectional view of the lens driving device taken along the line AB in FIG. 14.

[0079] [Figure 21b] 15 is a cross-sectional view of the lens driving device in the CD direction of FIG. 14.

[0080] [Figure 21c]15 is a cross-sectional view of the lens driving device taken along the GH direction in FIG. 14.

[0081] [Figure 21d] 15 is a cross-sectional view of the lens driving device taken along the EF direction in FIG. 14.

[0082] [Figure 21e] 15 is a cross-sectional view of the lens driving device taken along the IJ direction in FIG. 14.

[0083] [Figure 22a] 10A and 10B are diagrams illustrating the movement of an OIS moving part due to electromagnetic forces acting on the first and second frames.

[0084] [Figure 22b] FIG. 2 is a perspective view of a coil, a magnet, and first and second frames.

[0085] [Figure 22c] FIG. 2 is a perspective view of a coil, a magnet, a sliding member, and a position sensor.

[0086] [Figure 23] FIG. 2 is a perspective view of a magnet and a sliding member.

[0087] [Figure 24] 10A and 10B are diagrams illustrating the attractive force between a magnet and a sliding member.

[0088] [Figure 25] 10A and 10B are diagrams illustrating an attractive force acting between a magnet and a sliding member.

[0089] [Figure 26] 10A to 10C are diagrams illustrating an assembly procedure for the lens driving device according to the embodiment.

[0090] [Figure 27a] FIG. 10 is a perspective view of a bobbin seat and slide member according to another embodiment.

[0091] [Figure 27b] FIG. 27b is an enlarged view of the seat of FIG. 27a.

[0092] [Figure 27c] FIG. 27b is a plan view of the bobbin seat and slide member of FIG. 27a.

[0093] [Figure 28] FIG. 10 is a plan view of a bobbin, a second frame, and a slide member according to another embodiment.

[0094] [Figure 29] FIG. 10 is a cross-sectional view of a lens driving device according to another embodiment, taken along a direction perpendicular to the optical axis.

[0095] [Figure 30] FIG. 10 shows another embodiment with a separate OIS yoke.

[0096] [Figure 31] FIG. 1 is an exploded perspective view of a camera device according to an embodiment.

[0097] [Figure 32] 1 is a perspective view of a portable terminal according to an embodiment;

[0098] [Figure 33] FIG. 33 is a diagram illustrating the configuration of the portable terminal shown in FIG. DETAILED DESCRIPTION OF THE INVENTION

[0099] Hereinafter, an embodiment of the present invention that can specifically achieve the above object will be described with reference to the accompanying drawings.

[0100] In the description of the embodiments, when an element is described as being "on or under" an element, "on or under" includes both two elements that are in direct contact with each other and one or more other elements that are indirectly disposed between the two elements. Also, when "on or under" is used, it can mean not only above but also below an element.

[0101] Additionally, relational terms such as "first" and "second," "top / upper / upper," and "bottom / lower / lower" used hereinafter do not necessarily require or imply a certain physical or logical relationship or sequence between such entities or elements, but may be used only to distinguish one entity or element from another. Additionally, the same reference numerals refer to the same elements throughout the description of the figures.

[0102] Furthermore, unless otherwise specified, the terms "comprise," "constitute," or "have" used below mean that the relevant elements may be inherent, and therefore should be interpreted as not excluding other elements but as including other elements.

[0103] Hereinafter, a lens driving device according to an embodiment will be described with reference to the accompanying drawings. For convenience of explanation, the lens driving device according to the embodiment will be described using a Cartesian coordinate system (x, y, z). However, other coordinate systems may be used for explanation, and the embodiment is not limited thereto. In each drawing, the x-axis and y-axis refer to directions perpendicular to the z-axis, which is the optical axis direction. The z-axis direction, which is the optical axis OA direction or a direction parallel to the optical axis OA, is referred to as the "first direction," the x-axis direction as the "second direction," and the y-axis direction as the "third direction."

[0104] An "autofocusing device" applied to a small camera module of a mobile device such as a smartphone or tablet PC is a device that automatically focuses an image of a subject on an image sensor surface. Such an autofocusing device can be configured in various ways, and a lens driving device according to an embodiment can perform an autofocusing operation by moving an optical module including at least one lens in a first direction.

[0105] FIG. 1 is an exploded perspective view of a lens driving device 1100 according to an embodiment, FIG. 2 is a perspective view of the lens driving device 1100 excluding a cover member 1300, FIG. 3a is a perspective view of a bobbin 1110, and FIG. 3b is a perspective view of the bobbin 1110, a sliding member (sliding member) 2. FIG. 6c is a cross-sectional view of lens driving device 1100 taken along the EF direction in FIG. 2. FIG. 6d is a cross-sectional view of lens driving device 1100 taken along the GH direction in FIG. 2. FIG. 7 is a diagram showing attractive forces FA1 and FA2 acting between slide member 1021 and magnet 1130. FIG. 4a is a first perspective view of housing 1140, and FIG. 4b is a second perspective view of housing 1140. FIG. 5 is a perspective view of housing 1140, coil 1120, position sensor 1170, capacitor 1195, and circuit board 1190. FIG. 6a is a cross-sectional view of lens driving device 1100 taken along the AB direction in FIG. 2. FIG. 6b is a cross-sectional view of lens driving device 1100 taken along the CD direction in FIG. 2. FIG. 6c is a cross-sectional view of lens driving device 1100 taken along the EF direction in FIG. 2. FIG. 6d is a cross-sectional view of lens driving device 1100 taken along the GH direction in FIG. 2. FIG.

[0106] 1 to 7, the lens driving device 1100 may include a housing 1140, a bobbin 1110, a coil 1120, a magnet 1130, and a slide member 1021.

[0107] The lens driving device 1100 may further include a position sensor 1170 for AF feedback driving. The lens driving device 1100 may further include a circuit board 1190 electrically connected to the position sensor 1170 to supply a driving signal to the position sensor 1170 and receive an output from the position sensor 1170. The lens driving device 1100 may further include a capacitor 1195 electrically connected to the circuit board 1190. The lens driving device 1100 may further include a cover member 1300 for accommodating the bobbin 1110 and the housing 1140.

[0108] The bobbin 1110 is for housing a lens or a lens barrel, and may be disposed within the housing 1140. The bobbin 1110 may alternatively be referred to as a "lens holder" or a "lens carrier."

[0109] The bobbin 1110 can move in the optical axis direction, for example, by electromagnetic interaction between the coil 1120 and the magnet 1130, causing the bobbin 1110 to move in a first direction (for example, the Z-axis direction).

[0110] The bobbin 1110 has an opening for coupling with the lens module 1400. 1101 For example, the lens module 1400 may include at least one of a lens and a lens barrel. 1101 The shape of the lens barrel may match the shape of the lens or lens barrel to which it is attached, and may be, for example, but not limited to, circular, elliptical, or polygonal.

[0111] 1, the bobbin 1110 may include at least one stopper disposed on at least one of the upper surface and the lower surface. The stopper of the bobbin 1110 has a structure that protrudes in a first direction or an upward direction (or a downward direction) from the upper surface (or the lower surface) of the bobbin 1110, and can prevent the upper surface of the bobbin 1110 from directly hitting the inner surface of the upper plate 1301 of the cover member 1300 (or the lower part of the housing 1140).

[0112] The bobbin 1110 may include a seat 1102 for seating the magnet 1130. For example, the seat 1102 may be a groove recessed from the outer surface of the bobbin 1110.

[0113] The bobbin 1110 may include a plurality of side surfaces 1110A to 1110D or outer surfaces. For example, the bobbin 1110 may include a first side surface 1110A, a second side surface 1110B, a third side surface 1110C, and a fourth side surface 1110D.

[0114] For example, the second side surface 1110B may face the first side surface 1110A or may be located on the opposite side of the first side surface 1110A relative to the optical axis OA. The third side surface 1110C and the fourth side surface 1110D may be located between the first side surface 1110A and the second side surface 1110B. The fourth side surface 1110D may face the third side surface 1110C or may be located on the opposite side of the third side surface 1110C relative to the optical axis OA.

[0115] 3a illustrates the bobbin 1110 having four sides, but in other embodiments, the bobbin may have three or more sides. For example, the seat 1102 may be formed on a first side 1110A of the bobbin. For example, the lower portion of the seat 1102 may be closed without opening at the bottom surface of the bobbin 1110. Also, the upper portion of the seat 1102 may be closed without opening at the top surface of the bobbin 1110. In other embodiments, for example, the seat 1102 may include an opening that opens at at least one of the top surface or bottom surface of the bobbin 1110.

[0116] The bobbin 1110 may include a receiving portion 1105 for receiving at least a portion of the housing 1140. For example, the bobbin 1110 may include at least one receiving portion 1105A, 1105B disposed between a first side 1110A and a second side 1110B of the bobbin 1110.

[0117] For example, the receiving portion 1105 of the bobbin 1110 can receive the slide member 1021. For example, the slide member 1021 can be disposed within the receiving portion 1105 of the bobbin 1110.

[0118] For example, the bobbin 1110 may include a first accommodating portion 1105A for accommodating at least a portion of the first support portion 1146A of the housing 1140 and a second accommodating portion 1105B for accommodating at least a portion of the second support portion 1146B of the housing 1140.

[0119] For example, the first receiving portion 1105A may be disposed or formed on the third side surface 1110C of the bobbin 1110, and the second receiving portion 1105B may be disposed or formed on the fourth side surface 1110D of the bobbin 1110.

[0120] For example, the first receiving portion 1105A may have the form of a groove recessed from the third side surface 1110C of the bobbin 1110. The second receiving portion 1105B may have the form of a groove recessed from the fourth side surface 1110D of the bobbin 1110.

[0121] For example, the first accommodating portion 1105A (or the second accommodating portion 1105B) may include a first opening 1005A that opens to the bottom surface of the bobbin 1110. The first accommodating portion 1105A (or the second accommodating portion 1105B) may include a second opening 1005B that opens to the top surface of the bobbin 1110. In other embodiments, at least one of the first opening 1005A and the second opening 1005B of the first accommodating portion 1105A (or the second accommodating portion 1105B) may be omitted.

[0122] Referring to Figure 3a, for example, the first accommodating portion 1105A may include a first surface 1011A adjacent to or in contact with the first region 1115A of the third side surface 1110C of the bobbin 1110 adjacent to one side (or one end) of the magnet 1130, a second surface 1011B located between the first surface 1011A and the second side surface 1110B, and a third surface 1011C located between the first surface 1011A and the second surface 1011B.

[0123] For example, the second surface 1011B can abut the second region 1115B of the third side 1110C of the bobbin 1110. For example, the second region 1115B can be a region of the third side 1110C of the bobbin 1110 that is adjacent to or abuts the second side 1110B of the bobbin 1110.

[0124] For example, the second surface 1011B may be an inclined surface inclined with respect to the third side surface 1110C of the bobbin 1110. For example, the interior angle formed between the second surface 1011B and the third surface 1011C may be an obtuse angle.

[0125] For example, the second accommodating portion 1105B may include a first surface 1012A adjacent to or in contact with a first region 1116A of the fourth side surface 1110D of the bobbin 1110 adjacent to the other side (or other end) of the magnet 1130, a second surface 1012B located between the first surface 1012A and the second side surface 1110B, and a third surface 1012C located between the first surface 1012A and the second surface 1012B.

[0126] For example, the second surface 1012B can abut the second region 1116B of the fourth side 1110D of the bobbin 1110. For example, the second region 1116B can be a region of the fourth side 1110D of the bobbin 1110 that is adjacent to or abuts the second side 1110B of the bobbin 1110.

[0127] For example, the second surface 1012B may be an inclined surface inclined with respect to the fourth side surface 1110D of the bobbin 1110. For example, the interior angle formed between the second surface 1012B and the third surface 1012C may be an obtuse angle. In other embodiments, the interior angle formed between the second surface 1012B and the third surface 1012C may be a right angle. In still other embodiments, the interior angle formed between the second surface 1012B and the third surface 1012C may be an acute angle.

[0128] For example, the first accommodating portion 1105A and the second accommodating portion 1105B may have shapes symmetrical to each other with respect to the optical axis.

[0129] The AF moving portion (or moving body) may include at least one groove for locating or accommodating at least a portion of the slide member 1021 .

[0130] For example, the bobbin 1110 may include at least one groove 1103A, 1103B for positioning, inserting, or accommodating at least a portion of the slide member 1021. For example, the grooves 1103A, 1103B may be expressed interchangeably as an "accommodation groove," a "guide groove," or a "guide portion."

[0131] For example, the first receiving portion 1105A may include a first groove 1103A for disposing or receiving at least a portion of the first slide member 1021A. For example, the second receiving portion 1105B may include a second groove 1103B for disposing or receiving at least a portion of the second slide member 1021B.

[0132] For example, the first groove 1103A may be formed in the first surface 1011A of the first receiving portion 1105A. For example, the first groove 1103A may be recessed from the first surface 1011A of the first receiving portion 1105A. For example, the first groove 1103A may include an opening that opens to at least one of the upper surface and the lower surface of the bobbin 1110. In another embodiment, the upper portion of the first groove 1103A may be closed without opening to the upper surface of the bobbin 1110. For example, when viewed from above, the groove 1103AThe shape of the first groove 1103A may be triangular, semicircular, or polygonal (e.g., square, pentagon, etc.), or, for example, the first groove 1103A may be "V" or "U" shaped.

[0133] For example, the second groove 1103B may be formed in the first surface 1012A of the second receiving portion 1105B. For example, the second groove 1103B may be recessed from the first surface 1012A of the second receiving portion 1105B. For example, the second groove 1103B may include an opening that opens to at least one of the upper surface and the lower surface of the bobbin 1110. The description of the shape of the first groove 1103A may be applied or mutatis mutandis to the shape of the second groove 1103B.

[0134] The magnet 1130 is disposed on, coupled to, or attached to the bobbin 1110. For example, the magnet 1130 can be disposed on or coupled to the first side 1110A of the bobbin 1110. For example, the magnet 1130 can be disposed in or coupled to the seat 1102 of the bobbin 1110.

[0135] The shape of the magnet 1130 may be, for example, a rectangular parallelepiped shape, corresponding to the first side surface 1110A of the bobbin 1110. In another embodiment, at least one of both ends of the magnet 1130 may have a tapered shape.

[0136] The magnet 1130 may be a monopole magnet or a bipole magnet with opposite polarities and a naturally formed boundary between the opposite polarities. For example, the magnet 1130 may be a monopole magnet or a bipole magnet divided into north and south poles in the optical axis direction. In other embodiments, the magnet 1130 may be a monopole magnet or a bipole magnet divided into north and south poles in a direction perpendicular to the optical axis.

[0137] In yet another embodiment, the magnet 1130 may be a four-pole magnet or a bipolar magnet to improve the electromagnetic force. For example, the magnet 1130 may include a first magnet including a north pole and a south pole, a second magnet including a south pole and a north pole, and a partition wall disposed between the first and second magnets. Here, the partition wall is a substantially non-magnetic portion and may include a section with almost no polarity, and may be filled with air or made of a non-magnetic material, which may also be referred to as a "neutral zone." For example, the first and second magnets may face each other in the optical axis direction, and the first and second magnets may be disposed in the optical axis direction with opposite polarities facing each other.

[0138] The housing 1140 can form an accommodation space for the bobbin 1110 together with the cover member 1300. For example, the housing 1140 can be coupled to the cover member 1300. The housing 1140 can also be expressed interchangeably as a "base."

[0139] At least a portion of the housing 1140 is disposed inside the cover member 1300 and can accommodate the bobbin 1110. For example, the housing 1140 can support the slide member 1021, the coil 1120, and the circuit board 1190.

[0140] The housing 1140 may include a cavity for receiving the bobbin 1110. The housing 1140 may also include an opening for the bobbin 1110. 1101 The housing 1140 may include an opening 1140A corresponding to the bobbin 1110. For example, the opening 1140A may be a through-hole or a hollow for exposing at least a portion of the bobbin 1110 (or the lens module 1400). For example, the opening 1140A may be located in the center or a central region of the housing 1140. For example, the opening 1140A of the housing 1140 may be a through-hole or a hollow that penetrates the housing 1140 in the optical axis direction.

[0141] The opening 1140A of the housing 1140 may have a shape corresponding to the shape of the bobbin 1110, for example, polygonal (e.g., square or octagonal) or circular (or elliptical), but is not limited to this and may have a variety of shapes.

[0142] The housing 1140 may include a plurality of sides 1141A to 1141D. The housing 1140 may include a corner located between two adjacent sides.

[0143] The housing 1140 may include a first side 1141A corresponding to or facing the first side 1110A of the bobbin 1110, a second side 1141B corresponding to or facing the second side 1110B of the bobbin 1110, a third side 1141C corresponding to or facing the third side 1110C of the bobbin 1110, and a fourth side 1141D corresponding to or facing the fourth side 1110D of the bobbin 1110.

[0144] The first side 1141A (or first side surface or first outer surface) of the housing 1140 may be located opposite the second side 1141B (or second side surface or second outer surface) of the housing 1140, and the third side 1141C (or third side surface or third outer surface) of the housing 1140 may be located opposite the fourth side 1141D (or fourth side surface or fourth outer surface) of the housing 1140.

[0145] Each of the first to fourth side portions 1141A to 1141D of the housing 1140 can be disposed parallel to a corresponding one of the side plates 1302 of the cover member 1300.

[0146] The housing 1140 may include a seat 1145 for positioning the coil 1120. For example, the seat 1145 may be disposed on or formed on the first side 1141A of the housing 1140. For example, the seat 1145 may be a through-hole that passes through the first side 1141A of the housing 1140.

[0147] Since the seating portion 1145 is in the form of a through hole, no part of the housing 1140 is interposed between the coil 1120 and the magnet 1130, thereby increasing the electromagnetic force between the magnet 1130 and the coil 1120. In addition, since no part of the housing 1140 is interposed between the position sensor 1170 and the magnet 1130, the output of the position sensor 1170 can be increased, and the sensitivity of the position sensor 1170 can be improved.

[0148] In other embodiments, the seat 1145 may be in the form of a groove recessed from the outer surface (or inner surface) of the first side 1141A of the housing 1140.

[0149] The housing 1140 may include a seat 1143 for placing or seating the circuit board 1190. For example, the seat 1143 may be a groove recessed from the first side 1141A (or first side surface or first outer surface) of the housing 1140, and may include an opening that opens to at least one of the upper surface or the lower surface of the housing 1140. For example, the seat 1145 may be formed on the bottom surface of the groove of the seat 1143 of the housing 1140.

[0150] The housing 1140 may include at least one protrusion 1025 for coupling with the circuit board 1190. For example, the at least one protrusion 1025 may be disposed on or protrude from the bottom surface of the groove of the seat 1143.

[0151] The circuit board 1190 may include a hole 1026 for coupling with at least one protrusion 1025. For example, the hole 1026 may be a through-hole. For example, the housing 1140 may include two protrusions 1025A, 1025B, and the circuit board 1190 may include two holes 1026A, 1026B for coupling with the two protrusions 1025A, 1025B.

[0152] The housing 1140 may include a step portion 1211 disposed on a lower portion of at least one of the side portions 1141A to 1141D of the housing 1140. For example, the step portion 1211 may protrude from the outer surface of the side portions 1141A to 1141D of the housing 1140 in a direction perpendicular to the optical axis.

[0153] For example, the step portion 1211 may be coupled to the lower end of the side plate 1302 of the cover member 1300. For example, the step portion 1211 of the housing 1140 and the lower end of the side plate 1302 of the cover member 1300 may be bonded or sealed to each other via an adhesive or a sealing material.

[0154] The housing 1140 can include at least one stopper 1142 protruding from the top surface. For example, the stopper 1142 can protrude from an area of ​​the top surface of the housing 1140 adjacent to or abutting a corner of the housing 1140.

[0155] For example, the housing 1140 may include four stoppers 142A-142D adjacent to or in contact with the four corners of the housing 1140. In other embodiments, the housing 1140 may include more than two stoppers.

[0156] The housing 1140 may include a support portion 1146 for fixing or supporting the slide member 1021. The support portion 1146 may be disposed in the accommodation portion 1105 of the bobbin 1110. The support portion 1146 may be expressed interchangeably as a "fixing portion," a "protrusion," or a "projection." The support portion 1146 may protrude from the inner surface (or inner face) of the side portion of the housing 1140.

[0157] For example, the housing 1140 may include a first support portion 1146A arranged on the inner surface (or inner face) of the third side portion 1141C and a second support portion 1146B arranged on the inner surface (or inner face) of the fourth side portion 1141D.

[0158] For example, the first support portion 1146A may protrude in a direction toward the fourth side portion 1141D of the housing 1140, and the second support portion 1146B may protrude in a direction toward the third side portion 1141C of the housing 1140.

[0159] Referring to FIG. 4a, the first support portion 1146A may include a first surface 1013A corresponding to or facing the first surface 1011A of the first seating portion 1105A of the bobbin 1110, a second surface 1013B corresponding to or facing the second surface 1011B of the first seating portion 1105A of the bobbin 1110, and a third surface 1013C corresponding to or facing the third surface 1011C of the first seating portion 1105A of the bobbin 1110.

[0160] The second support portion 1146B has a first surface 1014A that corresponds to or faces the first surface 1012A of the second seating portion 105B of the bobbin 1110, and a second seating portion 105B of the bobbin 1110. 1105B a second surface 1014B corresponding to or facing the second surface 1012B of the bobbin 1110; 1105B and a third surface 1014C corresponding to or facing the third surface 1012C.

[0161] The slide member 1021 may be disposed between the first surfaces 1011A, 1012A of the seat 1105 of the bobbin 1110 and the first surfaces 1013A, 1014A of the support portion 1146 of the housing 1140. The slide member 1021 may be coupled to the housing 1140 or fixed to the housing 1140.

[0162] For example, the slide member 1021 may be coupled or secured to the support 1146 of the housing 1140. For example, the slide member 1021 may be coupled or secured to the first surfaces 1013A, 1014A of the support 1146 of the housing 1140. For example, the slide member 1021 may be coupled or secured to the first surfaces 1013A, 1014A of the support 1146 of the housing 1140 by an adhesive.

[0163] For example, the support portion 1146 of the housing 1140 may include a groove 1147 for coupling with or fixing at least another portion of the slide member 1021. At least another portion of the slide member 1021 may be disposed within the groove 1147. The groove 1147 may increase the contact area with the slide member 1021, thereby increasing the bonding force between the slide member 1021 and the housing 1140 and allowing the slide member 1021 to be firmly fixed to the housing 1140.

[0164] At least a portion of the slide member 1021 can protrude out of the groove 1147 of the support portion 1146 of the housing 1140 and can contact the bobbin 1110. For example, at least a portion of the slide member 1021 can protrude out of the groove 1147 of the support portion 1146 of the housing 1140 and can be disposed within the groove 1103 of the bobbin 1110 and can contact at least a portion of the groove 1103.

[0165] The shape of the groove 1103 of the bobbin 1110 can determine the area that comes into contact with the slide member 1021. For example, if the groove 1103 of the bobbin 1110 is V-shaped, the inner surfaces (e.g., two surfaces) of the V-shape of the groove 1103 of the bobbin 1110 can come into contact with the slide member 1021.

[0166] For example, the grooves 1147 may be disposed or formed in the first surfaces 1103A, 1014A of the support 1146. For example, the grooves 1147A, 1147B may be formed in the first surfaces 1013A, 1013B of the first and second support portions 1146A, 1146B.

[0167] For example, the groove 1147 can extend to or contact the top surface of the housing 1140. Also, for example, the groove 1147 can extend to or contact the inner surface of the lower portion 1144 of the housing 1140.

[0168] 4b, 6b, and 6c, the housing 1140 may include a groove 1148 formed in the lower portion 1144 for inserting, positioning, or coupling a portion of the slide member 1021. The groove 1148 may be formed on the inner surface (or upper surface) of the lower portion 1144 of the housing 1140.

[0169] The lower portion 1144 of the housing 1140 may be connected to the lower portions or lower ends of the side portions 1141A to 1141D of the housing 1140. For example, the opening 1140A of the housing 1140 may be formed in the lower portion 1144 of the housing 1140.

[0170] For example, the length H2 of the portion of the slide member 1021 inserted or disposed in the groove 1148 of the housing 1140 in the optical axis direction may be 5% to 40% of the total length H1 of the slide member 1021 in the optical axis direction. For example, H2 may be 10% to 30% of H1. In other embodiments, H2 may be 10% to 20% of H1. If H2 is less than 5% of H1, the coupling force between the slide member 1021 and the housing 1140 may be weak, and if H2 is more than 40% of H1, the size of the lens driving device in the optical axis direction may be excessively increased.

[0171] The coil 1120 can move the AF movement unit in the optical axis direction by interacting with the magnet 1130. For example, the AF movement unit can include a bobbin 1110. For example, the AF movement unit can include the bobbin 1110 and a configuration coupled to or attached to the bobbin 1110. For example, the AF movement unit can include the bobbin 1110 and a magnet 1130. Alternatively, the AF movement unit can include a lens module 1400 coupled to or attached to the bobbin 1110.

[0172] The coil 1120 may be disposed in the housing 1140. For example, the coil 1120 may be disposed in the housing 1140 so as to correspond to, face, or overlap with the magnet 1130. For example, the coil 1120 may be disposed in the housing 1140 so as to correspond to, face, or overlap with the magnet 1130. 1140The first side 1141A of the optical fiber 1100 may be disposed on the first side 1141A.

[0173] Referring to FIGS. 4 a and 5 , the coil 1120 may be disposed within a seat 1145 of the housing 1140 .

[0174] The circuit board 1190 may be disposed on, coupled to, or fixed to the housing 1140. For example, the circuit board 1190 may be disposed on or coupled to the first side 1141A of the housing 1140.

[0175] For example, the circuit board 1190 may be disposed within the seat 1143 of the housing 1140 .

[0176] The circuit board 1190 may be electrically connected to the coil 1120. For example, the coil 1120 may be electrically connected to the coil 1120 by a conductive adhesive or solder.

[0177] For example, the coil 1120 may be disposed, mounted, or fixed to the circuit board 1190 so as to correspond to or face the magnet 1130. For example, the coil 1120 may be disposed, coupled, or fixed to a first surface of the circuit board 1190. For example, the first surface of the circuit board 1190 may be a surface that faces or opposes the outer peripheral surface of the bobbin 1110.

[0178] The circuit board 1190 has at least one end Child For example, the circuit board 1190 may include a plurality of terminals B1 to B5. For example, the plurality of terminals B1 to B5 may be disposed on a second surface of the circuit board 1190. For example, the second surface of the circuit board 1190 may be the surface opposite to the first surface of the circuit board 1190. For example, the circuit board 1190 may be a printed circuit board or a flexible printed circuit board (Flexible PCB).

[0179] For example, the coil 1120 may include a hollow. For example, the coil 1120 may have a ring shape. For example, the coil 1120 may have a ring shape wound around a straight line that is perpendicular to the optical axis OA and perpendicular to the outer surface of the first side portion 1141A of the housing 1140. For example, the coil 1120 may have a ring shape whose length in the horizontal direction (or second direction) is longer than its length in the vertical direction (or optical axis direction).

[0180] In another embodiment, the coil 1120 may be formed on the circuit board 1190 in the form of a fine pitch (FP) coil.

[0181] A drive signal can be applied to the coil 1120 to generate an electromagnetic force through electromagnetic interaction with the magnet 1130. Here, the drive signal provided to the coil 1120 is direct current and can be in the form of a voltage or current. Alternatively, for example, the drive signal provided to the coil 1120 can include at least one of a direct current signal and an alternating current signal.

[0182] The coil 1120 to which the drive signal is provided can electromagnetically interact with the magnet 1130 disposed on the bobbin 1110, and the AF movable part can move in a first direction due to the electromagnetic force caused by the electromagnetic interaction between the coil 1120 and the magnet 1130. By adjusting the magnitude and / or direction of the drive signal (e.g., drive current), the movement of the AF movable part in the first direction can be controlled, thereby performing an autofocusing function.

[0183] The position sensor 1170 can sense the magnet 1130 disposed on the bobbin 1110. For example, the position sensor 1170 can sense the displacement or position of the bobbin 1110 in the optical axis direction.

[0184] For example, the position sensor 1170 may be disposed in the housing 1140. For example, the position sensor 1170 may be disposed on the first side 1141A of the housing 1140. For example, the position sensor 1170 may be disposed in the seat 1145 of the housing 1140. For example, the position sensor 1170 may be disposed within the hollow of the coil 1120. In other embodiments, the position sensor 1170 may be disposed outside the hollow of the coil 1120.

[0185] For example, the position sensor 1170 can be coupled to the circuit board 1190 by a conductive adhesive or solder. For example, the position sensor 1170 can be electrically connected to the circuit board 1190. For example, the position sensor 1170 can be disposed on a first surface of the circuit board 1190. For example, the position sensor 1170 can be coupled to the first surface of the circuit board 1190.

[0186] For example, the position sensor 1170 may correspond to, face, or overlap the magnet 1130 in a direction perpendicular to the optical axis.

[0187] For example, the position sensor 1170 can sense the strength of the magnetic field of the magnet 1130 attached to the bobbin 1110 as the bobbin 1110 moves, and can output an output signal according to the sensing result.

[0188] The position sensor 1170 may be implemented in the form of a driver IC including a Hall sensor, or may be implemented as a position detection sensor such as a Hall sensor alone.

[0189] For example, if the position sensor 1170 is a driver IC including a Hall sensor, the position sensor 1170 can transmit and receive data to and from the outside via data communication using a protocol, for example, I2C communication.

[0190] For example, if the position sensor 1170 is a driver IC including a Hall sensor, the position sensor 1170 may include first and second terminals for inputting a power supply or drive signal, a third terminal for a clock signal, a fourth terminal for a data signal, and fifth and sixth terminals for supplying a drive signal to the coil 1120.

[0191] Here, the first to fourth terminals of the position sensor 1170 may be electrically connected to a corresponding one of the first to fourth terminals B1 to B4 of the circuit board 1190. In addition, the fifth and sixth terminals of the position sensor 1170 may be electrically connected to the coil 1120. For example, the fifth terminal of the position sensor 1170 may be electrically connected to one end of the coil 1120, and the sixth terminal of the position sensor 1170 may be electrically connected to the other end of the coil 1120.

[0192] In an embodiment in which the position sensor 1170 is implemented solely as a Hall sensor, the position sensor 1170 may include two input terminals and two output terminals. In this case, the circuit board 1190 may include four terminals electrically connected to the two input terminals and two output terminals of the position sensor 1170, and two terminals electrically connected to the coil 1120. Although five terminals are shown in FIG. 5, in an embodiment in which the position sensor 1170 is implemented solely as a Hall sensor, the circuit board 1190 may include six terminals.

[0193] The capacitor 1195 may be disposed in the housing 1140. For example, the capacitor 1195 may be disposed on the first side 140A of the housing 1140. For example, the capacitor 1195 may be disposed in the seat 1145 of the housing 1140. For example, the capacitor 1195 may be disposed in the hollow of the coil 1120.

[0194] The capacitor 1195 may be disposed on or coupled to the circuit board 1190. For example, the capacitor 1195 may be disposed on or coupled to a first surface of the circuit board 1190. The capacitor 1195 may be in the form of a chip, and the chip may include a first terminal corresponding to one end of the capacitor 1195 and a second terminal corresponding to the other end of the capacitor 1195. The capacitor 1195 may also be referred to as a "capacitive element" or a condenser.

[0195] The capacitor 1195 may be electrically connected in parallel to the first and second terminals (e.g., B1, B2) of the circuit board 1190 for externally supplying power (or a drive signal) to the position sensor 1170. Alternatively, the capacitor 1195 may be electrically connected in parallel to the first and second terminals of the position sensor 1170 for supplying power or a drive signal.

[0196] The capacitor 1195 is electrically connected in parallel to the first and second terminals of the position sensor 1170 or the first and second terminals of the circuit board 1190, and can therefore act as a smoothing circuit that removes ripple components contained in the power supplied to the position sensor 1170 from the outside, thereby providing a stable and constant power signal to the position sensor 1170.

[0197] The cover member 1300 can accommodate the bobbin 1110 and the housing 1140 in an accommodating space formed together with the housing 1140 .

[0198] The cover member 1300 may include an upper plate 1301 and a side plate 1302. For example, the cover member 1300 may have a box shape with an open bottom, and the lower ends of the side plates 1302 of the cover member 1300 may be coupled to the housing 1140. The shape of the upper plate 1301 of the cover member 1300 may be polygonal, such as a square or octagon. An opening 1303 may be formed in the upper plate 1301 of the cover member 1300 to expose the lens module 1400 coupled to the bobbin 1110 to external light.

[0199] The slide member 1021 is disposed between the bobbin 1110 and the housing 1140 .

[0200] At least a portion of the slide member 1021 may be coupled or fixed to the housing 1140. For example, by an adhesive, at least a portion of the slide member 1021 may be coupled or fixed to the support portion 1146 of the housing 1140. Also, for example, by an adhesive, at least a portion of the slide member 1021 may be coupled or fixed to the groove 1147 of the housing 1140.

[0201] Referring to FIG. 5, for example, the upper end or surface of the slide member 1021 coupled or fixed to the housing 1140 (e.g., the support portion 1146) may be located lower than the upper surface or upper end of the housing 1140 (e.g., the support portion 1146).

[0202] Also, for example, the upper end or surface of the slide member 1021 coupled or fixed to the housing 1140 (for example, the support portion 1146) may be located lower than or at the same height as the upper surface or end of the coil 1120.

[0203] Also, for example, when the side portion 1141A of the housing 1140 is viewed from the front, the coil 1120 is slide Component 1021A and 2 slide Also, for example, when the side portion 1141A of the housing 1140 is viewed from the front, at least a portion of the magnet 1130 is slide Component 1021A and 2 slide It can be disposed between the member 1021B.

[0204] Also, for example, when side portion 1141A of housing 1140 is viewed from the front, at least a portion of coil 1120 can be disposed between the upper end of slide member 1021 and the lower end of the slide member.

[0205] The slide member 1021 can support the bobbin 1110 relative to the housing 1140 so that the bobbin 1110 can move in the optical axis direction. For example, the bobbin 1110 can be pressed against the slide member 1021. Also, for example, the bobbin 1110 can maintain contact with the slide member 1021 due to the interaction between the slide member 1021 and the magnet 1130.

[0206] The sliding member 1021 can be expressed interchangeably as a "shaft," "shaft member," "support member," "pin member," "pin," or "rod member." For example, the sliding member 1021 may be a member whose length H1 in the optical axis direction is greater than its length R1 in the direction perpendicular to the optical axis. For example, the sliding member 1021 may have a rounded outer periphery to reduce friction. For example, the cross section of the sliding member 1021 in the direction perpendicular to the optical axis may be circular or elliptical.

[0207] For example, the slide member 1021 may be two shaft members spaced apart from each other. 1021A , 1021B In other embodiments, the slide member 1021 may include one shaft member. In still other embodiments, the slide member 1021 may include three or more shaft members.

[0208] At least a portion of the bobbin 1110 can contact at least another portion of the slide member 1021. For example, at least a portion of the bobbin 1110 can contact at least another portion of the slide member 1021.

[0209] For example, at least a portion of the bobbin 1110 can contact at least a portion of the first shaft member 1021A, and at least another portion of the bobbin 1110 can contact at least a portion of the second shaft member 1021B. Thus, the bobbin 1110 can make two line contacts with the first and second shaft members 1021A, 1021B.

[0210] For example, the accommodating portion 1105 of the bobbin 1110 can contact at least another part of the slide member 1021. For example, the first surface 1011A or 1012A of the accommodating portion 1105 of the bobbin 1110 can contact at least another part of the slide member 1021. Or, for example, the grooves 1103A, 1103B of the accommodating portion 1105 of the bobbin 1110 can contact at least another part of the slide member 1021.

[0211] The bobbin 1110 can slide in the optical axis direction along the sliding member 1021. Also, the bobbin 1110 can move in the optical axis direction while coming into contact with the sliding member 1021 or maintaining contact with the sliding member 1021. Here, the sliding member 1021 can support the bobbin 1110 so that the bobbin 1110 can move in the optical axis direction.

[0212] Furthermore, in order to reduce the frictional force between the bobbin 1110 and the slide member 1021, a lubricant may be disposed between the bobbin 1110 and the slide member 1021. For example, the lubricant may be a grease-based lubricant, such as, but not limited to, SDM (steel dust meter)-378 grease.

[0213] For example, the lubricant may be disposed between the housing 1105 of the bobbin 1110 and the slide member 1021. Alternatively, for example, the lubricant may be disposed between the grooves 1103A, 1103B of the housing 1105 and the slide member 1021. The lubricant allows the bobbin 1110 to slide smoothly relative to the slide member 1021.

[0214] The slide member 1021 may be or may contain a magnetic material. The magnetic material may be a material that is attracted to a magnet. For example, the slide member 1021 may be or may contain a magnetic metal material (e.g., iron).

[0215] For example, an attractive force can act between the slide member 1021 and the magnet 1130. For example, the attractive force acting between the slide member 1021 and the magnet 1130 can bring the bobbin 1110 into close contact with the slide member 1021, and a predetermined force can be applied to the slide member 1021, allowing the slide member 1021 to support the bobbin 1110 due to the predetermined force.

[0216] Referring to Figure 7, an attractive force is generated between the slide member 1021 fixed to the housing 1140 and the magnet 1130 connected to the bobbin 1110, and due to the attractive force, the slide member 1021 located between the bobbin 1110 and the housing 1140 is pressed by the bobbin 1110 and the housing 1140, so that the slide member 1021 can stably support the bobbin 1110 relative to the housing 1140.

[0217] For example, an attractive force FA1 may be generated between the first shaft member 1021A of the sliding member 1021 and one end (or first end) of the magnet 1130, and an attractive force FA2 may be generated between the second shaft member 1021B of the sliding member 1021 and the other end (or second end) of the magnet 1130.

[0218] The bobbin 1110 can then slide or glide along the sliding member 1021 in a first direction due to the electromagnetic force generated by the interaction between the coil 1120 and the magnet 1130 .

[0219] 8 shows the assembly procedure of the lens driving device 1100 according to the embodiment. Referring to FIG. 8, the housing 1140 and the slide member are assembled with an adhesive. 1021A , 1021B Then, the coil 1120, the position sensor 1170, and the capacitor 1195 are bonded to the circuit board 1190 with a conductive adhesive or solder, and the circuit board 1190 and the housing 1140 are then bonded together with an adhesive.

[0220] Next, the magnet 1130 and the bobbin 1110 are bonded together with an adhesive. The bobbin 1110 is placed inside the housing 1140. Then, the cover member 1300 and the housing 1140 are bonded together with an adhesive.

[0221] FIG. 9 is a plan view of the housing 1140, the sliding member 1021, the magnet 1130, and the coil 1120. Referring to FIG. 9, the coil 1120 and the magnet 1130 may correspond to, face, or overlap each other in the third direction (Y-axis direction). For example, the third direction may be a direction perpendicular to the optical axis (or optical axis direction) and extending from the first side surface 1110A to the second side surface 1110B of the bobbin 1110. Alternatively, for example, the third direction may be a direction perpendicular to the optical axis and extending from the first side portion 1141A to the second side portion 1141B of the housing 1140. Furthermore, the third direction may be a direction perpendicular to the optical axis (or optical axis direction) and extending in such a way that the magnet 1130 and the coil 1120 face each other.

[0222] The slide member 1021 can be disposed between at least a portion of the bobbin 1110 and at least a portion of the housing 1140 , such as the support 1146 .

[0223] For example, the slide member 1021 can be disposed between the magnet 1130 and at least a portion of the housing 1140 (eg, the support portion 1146).

[0224] At least a portion of the slide member 1021 may correspond to, face, or overlap with the magnet 1130 in the third direction. At least a portion of the slide member 1021 may correspond to, face, or overlap with at least a portion of the housing 1140 (e.g., the support portion 1146) in the third direction.

[0225] For example, in the direction in which the coil 1120 and the magnet 1130 face each other, at least a portion of the slide member 1021 may correspond to, face, or overlap with the magnet 1130. For example, in the direction in which the coil 1120 and the magnet 1130 face each other, at least a portion of the slide member 1021 may correspond to, face, or overlap with at least a portion of the housing 1140 (e.g., the support portion 1146).

[0226] For example, in a direction from one side of the bobbin 1110 on which the coil 1120 is arranged toward one side of the housing 1140 on which the magnet 1130 is arranged, at least a portion of the slide member 1021 may correspond to, face, or overlap with the magnet 1130. For example, in a direction from one side of the bobbin 1110 on which the coil 1120 is arranged toward one side of the housing 1140 on which the magnet 1130 is arranged, at least a portion of the slide member 1021 may correspond to, face, or overlap with at least a portion of the housing 1140 (e.g., the support portion 1146).

[0227] For example, the first shaft member 1021A may be disposed between one end (or first end) of the magnet 1130 and the first support portion 1146A. For example, the first shaft member 1021A may correspond to, face to, or overlap with one end (or first end) of the magnet 1130 in the third direction. For example, the first shaft member 1021A may correspond to, face to, or overlap with the first support portion 1146A of the housing 1140 in the third direction.

[0228] For example, the second shaft member 1021B may be disposed between the other end (or second end) of the magnet 1130 and the second support portion 1146B. For example, the second shaft member 1021B may correspond to, face to, or overlap with the other end (or second end) of the magnet 1130 in the third direction. For example, the second shaft member 1021B may correspond to, face to, or overlap with the second support portion 1146B of the housing 1140 in the third direction.

[0229] In FIG. 9, of the grooves 1103A and 1103B of the bobbin 1110 and the support portion 1146 (or slide member 1021) of the housing 1140, the grooves 1103A and 1103B of the bobbin 1110 may be disposed closer to the first side portion 1141A of the housing 1140.

[0230] In another embodiment, the support portion (or slide member 1021) of the housing 1140 may be disposed closer to the first side 1141A of the housing 1140 than the groove of the bobbin 1110. That is, in another embodiment, the grooves 1103A and 1103B are disposed closer to the first side 1141A of the housing 1140 than the groove of the bobbin 1110. 1110 The slide member 1021 may be coupled to the second surfaces 1013B, 1014B of the support portion of the housing 1140.

[0231] For example, the sliding member 1021 may not overlap the coil 1120 in the third direction. In other embodiments, at least a portion of the sliding member 1021 may overlap the coil 1120 in the third direction.

[0232] The length L1 of the magnet 1130 in the second direction (e.g., the X-axis direction) may be greater than the length L2 of the coil 1120 in the second direction (L1>L2). For example, the second direction may be a direction perpendicular to the optical axis (or optical axis direction) from the third side surface 1110C to the fourth side surface 1110D of the bobbin 1110. For example, the second direction may be a direction perpendicular to the optical axis from the third side surface 1141C to the fourth side surface 1141D of the housing 1140. In other embodiments, L1 and L2 may be the same.

[0233] For example, the length L1 of the magnet 1130 in the second direction (for example, the X-axis direction) is the distance between the first shaft member 1021A and the second shaft member 1021B That is, the magnet 1130 may be positioned or extend longer than the separation distance between the first shaft member 1021A and the second shaft member 1021A.

[0234] Alternatively, for example, at least a portion of the slide member 1021 may be disposed between one end and the other end of the magnet 1130 .

[0235] For example, in the third direction, the distance D1 between the magnet 1130 and the sliding member 1021 may be greater than ½ of the thickness T1 of the magnet 1130 (D1>T1 / 2). For example, D1 may be the shortest distance between the magnet 1130 and the sliding member 1021 in the third direction. The thickness T1 of the magnet 1130 may be the length of the magnet 1130 in the third direction.

[0236] Also, for example, in the third direction, the distance D1 between the magnet 1130 and the sliding member 1021 may be less than three times the thickness T1 of the magnet 1130 (D1<3T1). In other embodiments, D1 may be greater than or equal to 1 time T1 and less than 2 times T1. In still other embodiments, D1 may be greater than or equal to 1.5 times T1 and less than 2 times T1.

[0237] If D1 is less than half of T1, the gap between the sliding member 1021 and the magnet 1130 is too small, and the attractive force between the sliding member 1021 and the magnet 1130 is too strong, making it difficult to smoothly move the bobbin 1110 in the optical axis direction. In other words, a large force is required to move the bobbin 1110 in the optical axis direction, which may increase power consumption.

[0238] If D1 is more than three times T1, the distance between the sliding member 1021 and the magnet 1130 is too small and the attractive force between the sliding member 1021 and the magnet 1130 is too strong, so that the sliding member 1021 cannot stably support the bobbin 1110.

[0239] The diameter R1 of the slide member 1021 may be equal to or greater than half the stroke of the bobbin 1110 in the optical axis direction and equal to or less than twice the stroke of the bobbin 1110 in the optical axis direction. In another embodiment, for example, R1 may be equal to or greater than half the stroke of the bobbin 1110 in the optical axis direction and equal to or less than 1.5 times the stroke of the bobbin 1110 in the optical axis direction. For example, the stroke of the bobbin 1110 in the optical axis direction may be the distance between the highest and lowest points of the position of the bobbin 1110. Also, for example, the stroke of the bobbin 1110 in the optical axis direction may be the distance between the highest and lowest positions to which the bobbin 1110 can physically move.

[0240] The diameter R1 of the sliding member 1021 may be 0.4 mm to 2 mm. In another embodiment, the diameter R1 of the sliding member 1021 may be 0.6 mm to 1.5 mm. In yet another embodiment, the diameter R1 of the sliding member 1021 may be 0.7 mm to 1 mm. If R1 is less than 0.4 mm, the diameter is too small to stably support the bobbin 1110. If R1 exceeds 2 mm, the diameter of the sliding member 1021 may be too large, which may increase the size of the lens driving device 1100 in a direction perpendicular to the optical axis.

[0241] For example, the stroke (or movable distance) of the bobbin 1110 in the optical axis direction can be 12 percent or more and 50 percent or less of the length H1 of the slide member 1021 in the optical axis direction. If the stroke (or movable distance) of the bobbin 1110 in the optical axis direction is less than 12 percent of H1, the length of the slide member 1021 becomes unnecessarily or unintentionally large compared to the stroke of the bobbin 1110, which may unnecessarily or unintentionally increase the weight of the lens driving device.

[0242] If the stroke (or movable distance) of the bobbin 1110 in the optical axis direction exceeds 50 percent of H1, H1 may be too small to stably support the bobbin 1110, resulting in poor AF drive reliability. In other embodiments, the stroke (or movable distance) of the bobbin 1110 in the optical axis direction may be 20 percent or more and 40 percent or less of H1.

[0243] 6c, the length H1 of the slide member 1021 in the optical axis direction may be equal to or greater than the length H3 of the magnet 1130 in the optical axis direction. In other embodiments, H1 may be less than H3.

[0244] For example, the length H1 of the slide member 1021 in the optical axis direction can be 70 percent (%) or more of the length H3 of the magnet 1130 in the optical axis direction. Also, for example, the length H1 of the slide member 1021 in the optical axis direction can be 150 percent (%) or less of H3. In other embodiments, H1 can be 80 percent (%) or more and 120 percent (%) or less of H3. In still other embodiments, H1 can be 90 percent (%) or more and 110 percent (%) or less of H3.

[0245] If H1 is less than 70 percent of H3, the attractive force between the slide member 1021 and the magnet 1130 may not be sufficient to stably support the bobbin 1110 relative to the housing 1140. On the other hand, if H1 is more than 150 percent of H3, the length of the slide member 1021 may be too large, increasing the size of the lens driving device 1100.

[0246] For example, at the highest point of the bobbin 1110, the height of the upper surface (or uppermost end) of the magnet 1130 may be higher than or the same as the height of the upper surface (or uppermost end) of the slide member 1021. In other embodiments, at the highest point of the bobbin 1110, the height of the upper surface (or uppermost end) of the magnet 1130 may be lower than the height of the upper surface (or uppermost end) of the slide member 1021.

[0247] For example, at the lowest point position of the bobbin 1110, the height of the lower surface (or lowest end) of the magnet 1130 may be higher than the height of the lower surface (or lowest end) of the slide member 1021. In other embodiments, at the lowest point position of the bobbin 1110, the height of the lower surface (or lowest end) of the magnet 1130 may be lower than or the same as the height of the lower surface (or lowest end) of the slide member 1021.

[0248] The length H1 of the slide member 1021 in the optical axis direction may be 40 to 90 percent of the distance H4 from the top of the cover member 1300 (or the top of the upper plate 1301) to the bottom of the housing 1140 (or the bottom of the lower portion 1144). If H1 is less than 40 percent of H4, the support force of the slide member 1021 for the bobbin 1110 may be reduced, making it impossible to stably support the bobbin 1110 within a predetermined stroke range. If H1 exceeds 90 percent of H4, stable support of the bobbin 1110 is ensured, but the length of the slide member 1021 may be unnecessarily increased, increasing the weight of the lens driving device. In other embodiments, H1 may be 50 to 80 percent of H4. Alternatively, H1 may be 60 to 80 percent of H4.

[0249] 6a and 6c, the length H5 of the coil 1120 in the optical axis direction may be smaller than the length H1 of the sliding member 1021 in the optical axis direction. In another embodiment, the length H1 of the sliding member 1021 in the optical axis direction and the length H5 of the coil 1120 in the optical axis direction may be the same. In yet another embodiment, H5 may be larger than H1.

[0250] For example, the length H5 of the coil 1120 in the optical axis direction is greater than or equal to a lower limit and less than or equal to an upper limit, where the lower limit is H1 minus 30 percent of H1 and the upper limit is H1 plus 30 percent of H1. If H5 is less than the lower limit, the length of the coil 1120 in the optical axis direction is too short to obtain a predetermined driving force for AF drive. If H5 is greater than or equal to the upper limit, the length of the sliding member 1021 is too short to stably support the bobbin 1110.

[0251] In the comparative example, in which the shaft member penetrates a part of the bobbin (e.g., a ring) to be coupled to the bobbin, if the shaft member does not have good linearity, a problem may occur in which the shaft member is pinched by a part of the bobbin (e.g., a ring). Also, in the comparative example, a separate yoke is provided in the housing to generate an attractive force against a magnet coupled to the bobbin in order to press the bobbin against the shaft member and stably support the bobbin in the housing.

[0252] In this embodiment, the bobbin 1110 has a structure with grooves 1103A and 1103B that come into contact with a part of the sliding member 1021, so that the sliding member 1021 is not pinched.

[0253] The sliding member 1021 has magnetism to generate an attractive force to the magnet 1130, and the attractive force between the sliding member 1021 and the magnet 1130 can stably support the bobbin 1110 on the sliding member 1021. That is, in this embodiment, since the sliding member 1021 stably supports the bobbin 1110 on the housing 1140, a separate yoke is not required, which reduces manufacturing costs, and the space occupied by the yoke can be reduced, which improves design freedom and reduces the size of the lens driving device.

[0254] Furthermore, since the lower portion of the slide member 1021 is positioned within the groove 1148 of the housing 1140, the height of the slide member 1021 in the optical axis direction can be reduced, and therefore the lens driving device can be designed to have a reduced height in the optical axis direction.

[0255] FIG. 10 is a plan view of a magnet 1130A, a bobbin 1110, and a slide member 1021 according to another embodiment.

[0256] Referring to FIG. 10, in order to increase the attractive forces FA1 and FA2 between the slide member 1021 and the magnet 1130A, the corners of the magnet 1130A adjacent to the slide member 1021 may have a chamfered structure.

[0257] For example, a corner at one end of the magnet 1130A adjacent to the first shaft member 1021A may be removed by chamfering, and one end of the magnet 1130A may have a flat surface 1017A facing the first shaft member 1021A.

[0258] Also, for example, the corner of the other end of the magnet 1130A adjacent to the second shaft member 1021B may be removed by chamfering, and the other end of the magnet 1130A may have a flat surface 1017B facing the second shaft member 1021B.

[0259] For example, in a direction perpendicular to the optical axis direction from coil 1120 toward magnet 1130A, magnet 1130A may include a portion whose length decreases in a second direction (eg, the X-axis direction).

[0260] For example, the sliding member 1021 does not have to face or overlap with the magnet 1130A in the third direction (for example, the Y-axis direction).

[0261] In FIG. 10, the protrusion 146 of the housing 1140 is omitted, and the slide member 1021 can be fixed at its lower portion to a groove 1148 of the housing 1140 .

[0262] 11a is a cross-sectional view of a lens driving device according to another embodiment taken along the EF direction in FIG. 2, and FIG. 11b is a cross-sectional view of the lens driving device of FIG. 11a taken along the GH direction in FIG.

[0263] 11a and 11b, the slide member 1021-1 may be made of a non-magnetic material. For example, the first slide member 1021A1 and the second slide member 1021B1 may be made of a non-magnetic material that does not generate an attractive force to the magnet 1130.

[0264] 11a and 11b may include a separate yoke 1095 that generates an attractive force by interacting with the magnet 1130. The yoke 1095 may be disposed in the housing 1140.

[0265] For example, the yoke 1095 may be disposed on the support 1146 of the housing 1140. For example, at least a portion of the yoke 1095 may be disposed to correspond to, face, or overlap with the magnet 1130 in the direction from the second side 1141B to the first side 1141A of the housing 1140 or in a third direction.

[0266] At least a portion of the yoke 1095 may be disposed to correspond to, face, or overlap with the slide member 1021-1 in the direction from the second side 1141B to the first side 1141A of the housing 1140 or in the third direction.

[0267] For example, the yoke 1095 may include a first yoke 1095A disposed on a first support portion 1146A of the housing 1140 and a second yoke 1095B disposed on a second support portion 1146B of the housing 1140. For example, the first yoke 1095A may correspond to, face, or overlap with the first slide member 1021A1 in the direction from the second side 1141B of the housing 1140 to the first side 1141A or in the third direction, and the second yoke 1095B may correspond to, face, or overlap with the second slide member 1021B1 in the direction from the second side 1141B of the housing 1140 to the first side 1141A or in the third direction. For example, the first yoke 1095A and the second yoke 1095B may be spaced apart from each other. In other embodiments, the first yoke 1095A and the second yoke 1095B may be connected to each other.

[0268] The yoke 1095 may be magnetic and may support the bobbin 1110 relative to the housing 1140 so that the bobbin 1110 can move in the optical axis direction due to an attractive force acting between the yoke 1095 and the magnet 1130. For example, the bobbin 1110 can be pressed against the sliding member 1021 due to an attractive force acting between the yoke 1095 and the magnet 1130. For example, the bobbin 1110 can be maintained in contact with the sliding member 1021 due to an attractive force acting between the yoke 1095 and the magnet 1130.

[0269] FIG. 12 shows an exploded perspective view of a camera device 1200 according to an embodiment.

[0270] 12, a camera device 1200 may include a lens or lens module 1400, a lens driving device 1100, an adhesive member 1612, a filter 1610, a first holder 1600, a second holder 1800, an image sensor 1810, a motion sensor 1820, a control unit 1830, and a connector 1840. The lens driving device 1100 may be any of the above-described embodiments. 1200 can be expressed interchangeably as a "camera module" or an "imaging device."

[0271] The lens module 1400 can be attached to the bobbin 1110 of the lens driver 1100 .

[0272] The first holder 1600 may be disposed below the housing 140 of the lens driver 1100. The filter 1610 is attached to the first holder 1600, and the first holder 1600 may include a protrusion 500 on which the filter 1610 is seated.

[0273] The adhesive member 1612 can bond or attach the housing 140 of the lens driver 1100 to the first holder 1600. For example, the adhesive member 1612 can be an epoxy, a heat-curable adhesive, a UV-curable adhesive, or the like.

[0274] The filter 1610 may serve to block light of a specific frequency band from passing through the lens module 1400 from entering the image sensor 1810. The filter 1610 may be, but is not limited to, an infrared blocking filter. Here, the filter 1610 may be arranged parallel to the xy plane.

[0275] An opening may be formed in the portion of the first holder 1600 where the filter 1610 is mounted so that light passing through the filter 1610 can be incident on the image sensor 1810 .

[0276] The second holder 1800 is disposed below the first holder 1600. 1800 An image sensor 1810 may be mounted on the filter 1610. The image sensor 1810 is a part where light passing through the filter 1610 is incident and an image of the light is formed.

[0277] The second holder 1800 may include various circuits, elements, control units, etc. to convert an image formed on the image sensor 1810 into an electrical signal and transmit it to an external device. The second holder 1800 may be embodied as a circuit board on which the image sensor is mounted, a circuit pattern is formed, and various elements are coupled.

[0278] The image sensor 1810 can receive an image contained in the light incident through the lens driving device 1100 and convert the received image into an electrical signal.

[0279] The filter 1610 and the image sensor 1810 may be spaced apart and disposed opposite to each other in a first direction.

[0280] The motion sensor 1820 is mounted on the second holder 1800 and can be electrically connected to the control unit 1830 via a circuit pattern provided on the second holder 1800.

[0281] The motion sensor 1820 outputs rotational angular velocity information according to the movement of the camera device 1200. The motion sensor 1820 may be implemented by a two-axis or three-axis gyro sensor or an angular velocity sensor.

[0282] The control unit 1830 is mounted on the second holder 1800. The second holder 1800 may be electrically connected to the lens driving device 1100. For example, the second holder 1800 may be electrically connected to the coil 1120 of the lens driving device 1100 and may provide a driving signal to the coil 1120.

[0283] The connector 1840 is electrically connected to the second holder 1800 and may have a port for electrically connecting to an external device.

[0284] An "image stabilization device" applied to a small camera device of a mobile device such as a smartphone or tablet PC may refer to a device configured to prevent the outline of a captured image from being unclear due to vibration caused by the user's hand when capturing a still image.

[0285] Lens driving device according to the embodiment 1100 The lens driving device according to the embodiment can perform autofocusing by moving an optical module including at least one lens in a first direction. 1100 can perform image stabilization by moving an optical module made up of at least one lens in second and third directions perpendicular to the first direction.

[0286]

[0287]

[0288] Hereinafter, the term "receiving portion" may be expressed interchangeably with "seat portion" or "groove." Hereinafter, the term "structure removed in a chamfered form" may include an inclined surface, a chamfered surface, or a tapered surface.

[0289] 13 is an exploded perspective view of a lens driving device 100 according to an embodiment, FIG. 14 is a perspective view of the lens driving device 100 excluding the cover member 300, FIG. 15 is an exploded perspective view of the bobbin 110 and the frame 10 of FIG. 13, FIG. 16a is an exploded perspective view of the bobbin 110, the magnet 130, and the slide member 21, FIG. 16b is an assembled perspective view of the bobbin 110, the magnet 130, and the slide member 21, FIG. 17a is a perspective view of the housing 140, FIG. 17b is a perspective view of the housing 140, the coil 17c is a combined perspective view of the circuit board 190, the position sensors 170, 240, the coils 120, 230, and the capacitor 195; FIG. 18a is a combined perspective view of the first frame 20, the magnet 31, and the slide members 41, 42; FIG. 18b is a first perspective view of the first frame 20, the magnet 31, and the slide member 42; FIG. 18c is a combined perspective view of the first frame 20, the magnet 31, and the slide member 42; 18d is a perspective view of the first frame 20, the magnet 31, and the slide member 42 combined together; FIG. 19a is a perspective view of the second frame 30, the magnet 23, the slide members 41, 21, and the magnet 180; FIG. 19b is a perspective view of the second frame 30, the magnet 23, and the slide members 41, 21; FIG. 19c is a perspective view of the second frame 30, the magnet 23, and the slide members 41, 21 combined together; 21a is a cross-sectional view of the lens driving device 100 in the AB direction of FIG. 14, FIG. 21b is a cross-sectional view of the lens driving device 100 in the CD direction of FIG. 14, FIG. 21c is a cross-sectional view of the lens driving device 100 in the GH direction of FIG. 14, FIG. 21d is a cross-sectional view of the lens driving device 100 in the EF direction of FIG. 14, and FIG. 21e is a cross-sectional view of the lens driving device 100 in the IJ direction of FIG. 14.

[0290] 13 to 21e, the lens driving device 100 can include a fixed portion, an AF moving portion, an OIS moving portion, and slide members 21 and 40.

[0291] The AF moving unit can move in the optical axis direction relative to the fixed unit. For example, the AF moving unit can include a bobbin 110. In another embodiment, the AF moving unit can further include a configuration (e.g., a magnet 130) coupled to the bobbin 110. In another embodiment, the AF moving unit can further include a lens module 400 coupled to the bobbin 110.

[0292] The OIS moving unit can move in a direction perpendicular to the optical axis relative to the fixed unit. For example, the OIS moving unit can include a frame 10. For example, the OIS moving unit can include the frame 10 and an AF moving unit. For example, the OIS moving unit can further include a configuration coupled to the frame 10 (e.g., magnets 23, 31 and a sliding member 21). The frame 10 can move in a direction perpendicular to the optical axis along the sliding members 42, 41. For example, the frame 10 can perform sliding movement along the sliding members 42, 41 in a direction perpendicular to the optical axis.

[0293] The lens driving device 100 may further include an AF driving unit for moving the AF moving unit in the optical axis direction. For example, the AF driving unit may include a magnet 123 and a coil 120. The lens driving device 100 may further include an OIS driving unit for moving the OIS moving unit in a direction perpendicular to the optical axis. For example, the OIS driving unit may include a coil 230 and magnets 31 and 23.

[0294] For AF feedback driving, the lens driving device 100 may further include a position sensor 170. Also, for OIS feedback driving, the lens driving device 100 may further include a position sensor 240.

[0295] The lens driving device 100 may further include a circuit board 190 electrically connected to the coils 120 and 230 and the position sensors 170 and 240. The lens driving device 100 may further include a capacitor 195. The lens driving device 100 may further include a cover member 300 for accommodating the bobbin 110 and the frame 10. The fixed part may include at least one of a housing 140 and the cover member 300. In addition, the fixed part may further include a configuration coupled to the housing 140, for example, the circuit board 190, the coils 120 and 230, and the position sensors 170 and 240.

[0296] The bobbin 110 is for housing a lens or a lens barrel, and can be disposed within the frame 140. The bobbin 110 can also be referred to interchangeably as a "lens holder" or a "lens carrier."

[0297] The bobbin 110 can move in the optical axis direction. For example, due to electromagnetic interaction between the coil 120 and the magnet 130, the bobbin 110 can move in a first direction (for example, the Z-axis direction).

[0298] 15, 16a, and 16b, the bobbin 110 may have an opening 101 for coupling with the lens module 400. For example, the lens module 400 may include at least one of a lens or a lens barrel. The shape of the opening 101 of the bobbin 110 may match the shape of the lens or lens barrel to be attached, and may be, for example, but not limited to, a circle, an ellipse, or a polygon.

[0299] 16a, the bobbin 110 may include at least one stopper disposed on at least one of the upper surface and the lower surface. The stopper of the bobbin 110 has a structure that protrudes in a first direction or an upward direction (or a downward direction) from the upper surface (or the lower surface) of the bobbin 110, and can prevent the upper surface of the bobbin 110 from directly hitting the inner surface of the upper plate 301 of the cover member 300 (or the lower portion 145 of the housing 140).

[0300] The bobbin 110 may include a seat 102 for seating the magnet 130. For example, the seat 102 may be a groove recessed from the outer surface of the bobbin 110.

[0301] The bobbin 110 may include a plurality of side surfaces 110A to 110D or outer surfaces. For example, the bobbin 110 may include a first side surface 110A, a second side surface 110B, a third side surface 110C, and a fourth side surface 110D.

[0302] For example, the second side surface 110B may face the first side surface 110A or may be located on the opposite side of the first side surface 110A relative to the optical axis OA. The third side surface 110C and the fourth side surface 110D may be located between the first side surface 110A and the second side surface 110B. The fourth side surface 110D may face the third side surface 110C or may be located on the opposite side of the third side surface 110C relative to the optical axis OA.

[0303] 16a illustrates the bobbin 110 having four sides, but in other embodiments, the bobbin 110 may have three or more sides. For example, the seat 102 may be formed on the first side 110A of the bobbin. For example, the lower part of the seat 102 may be closed without opening at the lower surface of the bobbin 110. Also, the upper part of the seat 102 may be closed without opening at the upper surface of the bobbin 110. In other embodiments, for example, the seat 102 may include an opening that opens at at least one of the upper surface or the lower surface of the bobbin 110.

[0304] The bobbin 110 may include a seat 105 for positioning or accommodating the slide member 21. For example, the bobbin 110 may include at least one seat 105A, 105B disposed between a first side 110A and a second side 110B of the bobbin 110.

[0305] For example, the seating portion 105 may be a hole or a through-hole that penetrates the bobbin 110 in the optical axis direction. For example, the seating portion 105 may include at least one opening 18A that exposes a side surface (or an outer peripheral surface) of the sliding member 21. For example, the length of the opening 18A in the third direction may be smaller than the diameter R1 of the sliding member 21. This prevents the sliding member 21 from slipping out of the opening 18A. The opening 18A reduces the frictional force between the bobbin 110 and the sliding member 21, allowing the bobbin 110 to move easily in the optical axis direction. This also prevents an increase in the driving current applied to the coil 120, thereby reducing power consumption.

[0306] Furthermore, by forming opening 18A in seating portion 105, when bobbin 110 moves in the optical axis direction, the problem of slide member 21 being pinched between seating portion 105 of bobbin 110 due to poor linearity of slide member 21 during AF drive does not occur.

[0307] The slide member 21 can support the bobbin 110 relative to the frame 10 so that the bobbin 110 can move in the optical axis direction.

[0308] The sliding member 21 may be expressed interchangeably as a "shaft," "shaft member," "support member," "pin member," or "rod member." For example, the sliding member 21 may be a member whose length in the optical axis direction is greater than its length in a direction perpendicular to the optical axis. For example, the sliding member 21 may have a rounded outer periphery to reduce friction. For example, the cross section of the sliding member 21 in the direction perpendicular to the optical axis may be circular or elliptical.

[0309] The length L1 of the slide member 21 in the optical axis direction may be greater than the length R1 of the slide member 21 in a direction perpendicular to the optical axis or the diameter (L1>R1). The length L1 of the slide member 21 in the optical axis direction may be proportional to the range of the entire stroke of the bobbin 110 in the optical axis direction. L1 may be the shortest length of the slide member 21 in the optical axis direction. R1 may be the shortest length of the slide member 21 in the second or third direction.

[0310] For example, the slide member 21 may include two shaft members 21A and 21B spaced apart from each other. In other embodiments, the slide member 21 may include one shaft member. In still other embodiments, the slide member 21 may include three or more shaft members. For example, the slide member 21 may be coupled or fixed to the second frame 30.

[0311] For example, the bobbin 110 has a first seat portion 105A for accommodating the first shaft member 21A, and a second seat portion 105B for accommodating the first shaft member 21A. 2 and a second seat 105B for receiving the shaft member 21B.

[0312] For example, the bobbin 110 may include a protrusion 118A formed on a first side surface 110A of the bobbin 110. For example, the protrusion 118A may protrude from the first side surface 110A of the bobbin 110 in a third direction (e.g., the Y-axis direction). For example, the seat 102 may be formed on the protrusion 118A. For example, the seat 102 may be formed on a first surface 19A of the protrusion 118A. For example, the first surface 19A of the protrusion 118A may be a surface that faces or opposes the coil 120.

[0313] The seats 105A and 105B may be formed on the protruding portion 118A of the bobbin 110. For example, the first seat 105A may be formed on the second surface 19B of the protruding portion 118A of the bobbin 110, and the second seat 105B may be formed on the third surface 19C of the protruding portion 118A of the bobbin 110. For example, the second surface 19B of the protruding portion 118A may be located between one side of the first surface 19A of the protruding portion 118A and the first side surface 110A of the bobbin 110. For example, the third surface 19C of the protruding portion 118A may be located between the other side of the first surface 19A of the protruding portion 118A and the first side surface 110A of the bobbin 110. For example, the second surface 19B and the third surface 19C may be located opposite each other.

[0314] For example, the first seat 105A may be a groove recessed from the second surface 19B of the protruding portion 118A of the bobbin 110, and the second seat 105B may be a groove recessed from the third surface 19C of the protruding portion 118A of the bobbin 110.

[0315] For example, each of the first and second seats 105A, 105B may include a first opening that opens at the top surface of the bobbin 110 and a second opening that opens at the bottom surface of the bobbin 110.

[0316] For example, the first seat 105A may be positioned adjacent one end (or first end) of the magnet 130, and the second seat 105B may be positioned adjacent the other end (or second end) of the magnet 130.

[0317] The seating portion 105 may include a groove 33 in which at least a portion of the slide member 21 is disposed, seated, or inserted. The groove 33 may serve as a guide member that prevents the bobbin 110 from coming off the slide member 21 when the bobbin 110 moves along the slide member 21 in the optical axis direction. For example, the groove 33 may be expressed interchangeably as an "accommodation groove," a "guide groove," or a "guide portion."

[0318] For example, groove 33 may include an opening that is open on at least one of the top and bottom surfaces of bobbin 110. In other embodiments, the top of groove 33 may be closed rather than open on the top surface of bobbin 110. For example, when viewed from above, groove 33 may have a triangular, semicircular, or polygonal shape (e.g., square or pentagonal). Or, for example, groove 33 may be "V" or "U" shaped.

[0319] For example, the first seating portion 105A may include a first groove 33A formed in an inner surface for positioning or seating at least a portion of the first shaft member 21A. For example, the first groove 33A may be adjacent to the second surface 19B of the protrusion 118A and opposite the first surface 19A of the protrusion 118A.

[0320] For example, the second seating portion 105B may include a second groove 33B formed in an inner surface for positioning or seating at least a portion of the second shaft member 21B. For example, the second groove 33B may be adjacent to the third surface 19C of the protrusion 118A and opposite the first surface 19A of the protrusion 118A.

[0321] For example, the first seating portion 105A and the second seating portion 105B may have shapes symmetrical to each other with respect to the optical axis.

[0322] For example, the bobbin 110 may include at least one protrusion protruding from a side surface of the bobbin 110. For example, protrusions 118B to 118D may be formed on at least one of the second to fourth side surfaces 110B to 110D of the bobbin 110. For example, the protrusion 118B may protrude in the opposite direction to the protrusion 118A. The protrusions 118C and 118D may protrude in opposite directions to each other.

[0323] The magnet 130 is disposed on, coupled to, or attached to the bobbin 110. For example, the magnet 130 can be disposed on or coupled to the first side 110A of the bobbin 110. For example, the magnet 130 can be disposed on or coupled to the seat 102 of the bobbin 110.

[0324] The shape of the magnet 130 may be, for example, a rectangular parallelepiped shape, corresponding to the first side surface 110A of the bobbin 110. For example, at least one of both ends of the magnet 130 may have an inclined shape.

[0325] For example, the corner of one end of the magnet 130 adjacent to the first shaft member 21A may be chamfered or may have a chamfered structure. The corner of one end of the magnet 130 adjacent to the first shaft member 21A may include an inclined surface, a chamfered surface, or a tapered surface.

[0326] For example, the corner of the other end of the magnet 130 adjacent to the second shaft member 21B may be chamfered or have a chamfered structure. The corner of one end of the magnet 130 adjacent to the second shaft member 21B may include an inclined surface, a chamfered surface, or a tapered surface.

[0327] For example, the magnet 130 may include a first side 13A that faces or faces the coil 120 and a second side 13B that is the opposite side of the first side 13A. The first side 13A of the magnet 130 may be exposed from a side of the bobbin 110.

[0328] For example, the length of second side surface 13B of magnet 130 in the second direction (for example, the X-axis direction) may be smaller than the length of first surface 13A of magnet 130 in the second direction (for example, the X-axis direction).

[0329] The magnet 130 may include a first portion S1 including the first side surface 13A and a second portion S2 including the second side surface 13B. For example, the first portion S1 may have a constant and uniform length in the second direction (e.g., the X-axis direction). For example, the length of the second portion S2 of the magnet 130 in the second direction (e.g., the X-axis direction) may decrease from the first side surface 13A toward the second side surface 13B.

[0330] For example, the magnet 130 may include a third side 13C located between one end (or one side) of the first side 13A and one end (or one side) of the second side 13B, and a fourth side 13D located between the other end (or other side) of the first side 13A and the other end (or other side) of the second side 13B.

[0331] For example, the third side surface 13C of the magnet 130 may include a first surface 17A that contacts the second side surface 13B and a second surface 17B that is located between the first side surface 13A and the first surface 17A. For example, the interior angle θ1 between the first surface 17A and the second side surface 13B may be an obtuse angle. For example, the interior angle between the second surface 17B and the first side surface 13A may be a right angle.

[0332] For example, the fourth side surface 13D of the magnet 130 may include a third surface 17C that contacts the second side surface 13B and a fourth surface 17D that is located between the first side surface 13A and the third surface 17C. For example, the interior angle θ1 between the third surface 17C and the second side surface 13B may be an obtuse angle. For example, the interior angle between the fourth surface 17D and the first side surface 13A may be a right angle.

[0333] In other embodiments, both ends of the magnet 130 may not be tapered or chamfered.

[0334] Magnet 130 is 2 The magnet 130 may be a monopole magnetized magnet having two opposite polarities and a naturally formed boundary between the opposite polarities. For example, the magnet 130 may be a monopole magnetized magnet divided into a north pole and a south pole in the optical axis direction. In another embodiment, the magnet 130 may be a monopole magnetized magnet divided into a north pole and a south pole in the direction perpendicular to the optical axis.

[0335] In yet another embodiment, the magnet 130 may be a four-pole magnet or a bipolar magnetized magnet to improve the electromagnetic force. For example, the magnet 130 may include a first magnet including a north pole and a south pole, a second magnet including a south pole and a north pole, and a partition wall disposed between the first and second magnets. Here, the partition wall is a substantially non-magnetic portion and may include a section with almost no polarity. It may be filled with air or made of a non-magnetic material and may also be referred to as a "neutral zone." For example, the first and second magnets may face each other in the optical axis direction, and the first and second magnets may be disposed so that their opposite polarities face each other in the optical axis direction.

[0336] 15, 17a and 17b, the housing 140, together with the cover member 300, can form a space for accommodating the bobbin 110 and the frame 10. For example, the housing 140 can be coupled to the cover member 300.

[0337] At least a portion of the housing 140 is disposed inside the cover member 300 and can accommodate the bobbin 110. For example, the housing 140 can support the slide member 42 and the circuit board 190. Alternatively, for example, the housing 140 can support at least one of the coils 120, 230, the position sensors 170, 240, and the capacitor 195.

[0338] The housing 140 may include a cavity for accommodating the bobbin 110. The housing 140 may also include an opening 140A corresponding to the opening 101 of the bobbin 110. For example, the opening 140A may be a through-hole or a hollow for exposing at least a portion of the bobbin 110 (or the lens module 400). For example, the opening 140A may be located in the center or a central region of the housing 140. For example, the opening 140A of the housing 140 may be a through-hole or a hollow that penetrates the housing 140 in the optical axis direction.

[0339] The opening 140A of the housing 140 may have a shape corresponding to the shape of the bobbin 110, for example, a polygonal shape (e.g., a square or octagonal shape) or a circle (or oval shape), but is not limited thereto and may have a variety of shapes.

[0340] The housing 140 may include a plurality of sides 141A to 141D. The housing 140 may include a corner located between two adjacent sides.

[0341] The housing 140 may include a first side 141A corresponding to or facing the first side 110A of the bobbin 110, a second side 141B corresponding to or facing the second side 110B of the bobbin 110, a third side 141C corresponding to or facing the third side 110C of the bobbin 110, and a fourth side 141D corresponding to or facing the fourth side 110D of the bobbin 110.

[0342] The first side 141A (or first side surface or first outer surface) of the housing 140 may be located opposite the second side 141B (or second side surface or second outer surface) of the housing 140, and the third side 141C (or third side surface or third outer surface) of the housing 140 may be located opposite the fourth side 141D (or fourth side surface or fourth outer surface) of the housing 140.

[0343] Each of the first to fourth side portions 141A to 141D of the housing 140 can be disposed parallel to a corresponding one of the side plates 302 of the cover member 300.

[0344] The housing 140 may include a seat 142A for placing the coil 120. For example, the seat 142A may be disposed or formed on the first side 141A of the housing 140. For example, the seat 142A may be a through-hole that passes through the first side 141A of the housing 140.

[0345] Since the seating portion 142A is in the form of a through hole, no part of the housing 140 is interposed between the coil 120 and the magnet 130, thereby increasing the electromagnetic force between the magnet 130 and the coil 120. In addition, since no part of the housing 140 is interposed between the position sensor 170 and the magnet 130, the output of the position sensor 170 can be increased, and the sensitivity of the position sensor 170 can be improved.

[0346] In another embodiment, the seat 142A may be a groove recessed from the outer surface (or inner surface) of the first side 141A of the housing 140.

[0347] The housing 140 may include seats 144, 143A for disposing the coil 230. For example, the housing 140 may include a first seat 144 for disposing the coil unit 230-1 and a second seat 143A for disposing the coil unit 230-2.

[0348] For example, the first seat 144 may be disposed or formed on the second side 141B of the housing 140. For example, the first seat 144 may be a through-hole that penetrates the second side 141B of the housing 140. For example, the housing 140 may include two seats 144A and 144B that are spaced apart from each other. For example, the seat 144A may be disposed adjacent to one of two corners adjacent to the second side 141B of the housing 140, and the seat 144B may be disposed adjacent to the other of the two corners adjacent to the second side 141B of the housing 140.

[0349] For example, the second seat 143A may be disposed or formed on the fourth side 141D of the housing 140. For example, the second seat 143A may be a through-hole that penetrates the fourth side 141D of the housing 140.

[0350] Since the seating portions 144 and 143A are in the form of through holes, no part of the housing 140 is interposed between the coil 230 and the magnets 31 and 23, thereby increasing the electromagnetic force between the magnets 31 and 23 and the coil 230. In addition, since no part of the housing 140 is interposed between the position sensor 240 and the magnets 31 and 23, the output of the position sensor 240 can be increased, thereby improving the sensitivity of the position sensor 240.

[0351] In another embodiment, the seating portion 144 may be a groove recessed from the outer surface (or inner surface) of the second side portion 141B of the housing 140, and the seating portion 143A may be a groove recessed from the outer surface (or inner surface) of the fourth side portion 141D of the housing 140.

[0352] 17a, the housing 140 may include at least one protrusion for coupling with the circuit board 190, and the circuit board 190 may include a hole for coupling with the at least one protrusion of the housing 140. For example, the at least one protrusion may be disposed on the first side 141A of the housing 140.

[0353] The housing 140 may include a step portion 14 disposed on a lower portion of at least one of the side portions 141A to 141D of the housing 140. For example, the step portion 14 may protrude from the outer surface of the side portions 141A to 141D of the housing 140 in a direction perpendicular to the optical axis.

[0354] For example, two stepped portions spaced apart from each other may be disposed on the lower portion of the outer surface of the first side portion 141A of the housing 140, and a portion of the circuit board 190 may be disposed between the two stepped portions 14. For example, the stepped portions 14 may be coupled to the lower end of the side plate 302 of the cover member 300. For example, the stepped portions 14 of the housing 140 and the lower end of the side plate 302 of the cover member 300 may be adhered or sealed to each other by an adhesive or a sealing material.

[0355] Although not shown in FIG. 17a, the housing 140 may include at least one stopper protruding from the top surface.

[0356] Although not shown in FIG. 17a, the first side 141A of the housing 140 may be formed with a seat for placing or seating the circuit board 190 thereon.

[0357] The housing 140 may include at least one receiving portion 45 for fixing or supporting the slide member 42. The receiving portion 45 may be interchangeably referred to as a "fixing portion," a "groove," or an "accommodating groove." The receiving portion 45 may be disposed in a lower portion 145 of the housing 140. The lower portion 145 of the housing 140 may be connected to the lower portions or lower ends of the side portions 141A to 141D of the housing 140. For example, the opening 140A of the housing 140 may be formed in the lower portion 145 of the housing 140.

[0358] For example, the receiving portion 45 may be formed on the inner surface (or upper surface) of the lower portion 145 of the housing 140. For example, the receiving portion 45 may be a groove recessed from the inner surface (or upper surface) of the lower portion 145 of the housing 140.

[0359] The receiving portion 45 may include a plurality of grooves spaced apart from one another. The number of grooves in the receiving portion 45 may be two or more. For example, the receiving portion 45 may include four grooves 45A to 45D spaced apart from one another. For example, each of the four grooves 45A to 45D may be disposed adjacent to a corresponding one of the four corners of the housing 140.

[0360] For example, each of the four grooves 45A to 45D may be disposed between a corresponding one of the four corners of the housing 140 and the opening 140A of the housing 140.

[0361] 17b, the slide member 42 may be disposed between the housing 140 and the first frame 20. The slide member 42 may be disposed between the lower portion 145 of the housing 140 and the first frame 20.

[0362] The slide member 42 may be coupled to or fixed to the housing 140 by an adhesive. For example, at least a portion of the slide member 42 may be coupled to or fixed to the housing 140. At least another portion of the slide member 42 may contact the first frame 20.

[0363] For example, the slide member 42 may be coupled to or fixed to the lower part of the housing 140. For example, the slide member 42 may be coupled to or fixed to the inner surface (or upper surface) of the lower part of the housing 140. For example, at least a portion of the slide member 42 may be coupled to or fixed to a receiving portion 45 of the housing 140. For example, the groove-shaped receiving portion 45 may increase the contact area between the slide member 42 and the adhesive, thereby increasing the bonding force between the slide member 42 and the housing 140 and firmly fixing the slide member 42 to the housing 140.

[0364] At least another portion of the slide member 42 protrudes outside the accommodating portion 45 of the housing 140, and at least another portion of the slide member 42 protruding outside the accommodating portion 45 may come into contact with the first frame 20. For example, at least another portion of the slide member 42 protruding outside the accommodating portion 45 may come into contact with the groove 72 of the first frame 20.

[0365] The slide member 42 may include a plurality of shaft members 42A to 42D. The number of shaft members may be 2 or more. For example, the slide member 42 may include four shaft members 42A to 42D spaced apart from one another.

[0366] For example, each of the four shaft members 42A to 42D may be disposed adjacent to a corresponding one of the four corners of the housing 140. For example, each of the four shaft members 42A to 42D may be disposed between a corresponding one of the four corners of the housing 140 and the opening 140A of the housing 140.

[0367] In another embodiment, the two shaft members 42A, 42B may extend in the second direction and be connected to each other, and the two shaft members 42C, 42D may extend in the second direction and be connected to each other.

[0368] The coil 120 can move the AF movement unit in the optical axis direction by interacting with the magnet 130. The coil 120 can be arranged in the housing 140. For example, the coil 120 can be arranged in the housing 140 so as to correspond to, face, or overlap with the magnet 130. For example, the coil 120 can be arranged on the first side 141A of the housing 130. Referring to Figures 17a and 17b, the coil 120 can be arranged in a seating portion 142A of the housing 140.

[0369] The circuit board 190 may be disposed on, coupled to, or fixed to the housing 140. For example, the circuit board 190 may include a first board 191 disposed on or coupled to the first side 141A of the housing 140.

[0370] For example, the circuit board 190 may include at least one terminal 95. For example, the circuit board 190 may include a plurality of terminals 95; B1 to Bn (n is a natural number greater than 1). For example, the plurality of terminals 95 may be disposed on the first board 191.

[0371] For example, the terminals B1 to B5 may be disposed on a second surface of the first substrate 191. For example, the second surface of the first substrate 191 may be the surface opposite to the first surface of the first substrate 191. For example, the first surface of the first substrate 191 may be the surface facing or opposite to the outer peripheral surface of the bobbin 110.

[0372] For example, the first substrate 191 may include an extension 191A disposed between two stepped portions of the first side 141A of the housing 140, and the plurality of terminals 95 may be disposed on the extension 191A. For example, the plurality of terminals 95 may be located below the bottom or bottom surface of the housing 140. In other embodiments, the plurality of terminals 95 may be located at the same height as the bottom or bottom surface of the housing 140 or may be located higher than the bottom or bottom surface of the housing 140.

[0373] For example, the circuit board 190 can be a printed circuit board or a flexible printed circuit board (Flexible PCB).

[0374] For example, coil 120 may be disposed, mounted, or fixed to circuit board 190 so as to correspond to or face magnet 130 in the third direction (Y-axis direction). For example, the third direction may be a direction perpendicular to the optical axis and extending from first side surface 110A to second side surface 110B of bobbin 110. Alternatively, for example, the third direction may be a direction perpendicular to the optical axis and extending from first side portion 141A to second side portion 141B of housing 140.

[0375] For example, the coil 120 may be disposed on a first substrate 191 of the circuit board 190. For example, the coil 120 may be disposed on, coupled to, or fixed to a first surface of the first substrate 191. The coil 120 may be coupled to the circuit board 190, e.g., the first substrate 191, by a conductive adhesive or solder. The coil 120 may be electrically connected to the circuit board 190, e.g., the first substrate 191.

[0376] For example, the coil 120 may include a hollow. For example, the coil 120 may have a ring shape. For example, the coil 120 may be a ring shape wound around a straight line that is perpendicular to the optical axis OA and perpendicular to the outer surface of the first side portion 141A of the housing 140. For example, the coil 120 may be a ring shape whose length in the horizontal direction (or second direction) is longer than its length in the vertical direction (or optical axis direction).

[0377] A drive signal may be applied to the coil 120 to generate an electromagnetic force through electromagnetic interaction with the magnet 130. Here, the drive signal supplied to the coil 120 may be direct current and may be in the form of a voltage or current. Alternatively, for example, the drive signal provided to the coil 120 may include at least one of a direct current signal and an alternating current signal.

[0378] The coil 120 to which the drive signal is provided can electromagnetically interact with the magnet 130 disposed on the bobbin 110, and the AF movable part can move in a first direction due to the electromagnetic force caused by the electromagnetic interaction between the coil 120 and the magnet 130. By adjusting the magnitude and / or direction of the drive signal (e.g., drive current), the movement of the AF movable part in the first direction can be controlled, thereby performing an autofocusing function.

[0379] 16a, 21a, and 21c, for example, the length L11 of the magnet 130 in the second direction (e.g., the X-axis direction) may be equal to or greater than the length L12 of the coil 120 in the second direction. For example, the second direction may be a direction perpendicular to the optical axis (or the optical axis direction) and extending from the third side surface 110C to the fourth side surface 110D of the bobbin 110. For example, the second direction may be a direction perpendicular to the optical axis and extending from the third side surface 141C to the fourth side surface 141D of the housing 140. In other embodiments, L11 may be smaller than L12.

[0380] For example, the length L11 of the magnet 130 in the second direction (for example, the X-axis direction) is the length L11 of the first shaft member 21A and the second shaft member 21B. 21B In other words, the magnet 130 may be arranged such that the distance between the first shaft member 21A and the second shaft member 21B is smaller than or equal to the distance (or the shortest distance) between the first shaft member 21A and the second shaft member 21B. 21B The separation distance between the

[0381] In another embodiment, the length of the magnet 130 in the second direction (e.g., the X-axis direction) is the same as the length of the first shaft member 21A and the second shaft member 21B. 21B In other embodiments, the magnet 130 may be positioned between the first shaft member 21A and the second shaft member 21B. 21B Alternatively, in other embodiments, at least a portion of the sliding member 21 may be disposed between one end and the other end of the magnet 130.

[0382] For example, the shortest distance D1 between the magnet 130 and the sliding member 21 may be greater than ½ of the thickness T1 of the magnet 130 (D1>T1 / 2). For example, D1 may be the shortest distance in the direction in which the magnet 130 and the sliding member 21 face each other. For example, the thickness T1 of the magnet 130 may be the length of the magnet 130 in the third direction.

[0383] Also, for example, the shortest distance D1 between the magnet 130 and the sliding member 21 may be less than three times the thickness T1 of the magnet 130 (D1<3T1). In other embodiments, D1 may be greater than or equal to one time T1 and less than two times T1. In still other embodiments, D1 may be greater than or equal to 1.5 times T1 and less than two times T1.

[0384] If D1 is less than half of T1, the gap between the sliding member 21 and the magnet 130 is too small, and the attractive force between the sliding member 21 and the magnet 130 is too strong, making it difficult to smoothly move the bobbin 110 in the optical axis direction. That is, a large force is required to move the bobbin 110 in the optical axis direction, which may increase power consumption.

[0385] If D1 is more than three times T1, the distance between the sliding member 21 and the magnet 130 is too large, and the attractive force between the sliding member 21 and the magnet 130 is too weak, so that the sliding member 21 cannot stably support the bobbin 110.

[0386] The diameter R1 of the slide member 21 may be equal to or greater than half the stroke of the bobbin 110 in the optical axis direction and equal to or less than twice the stroke of the bobbin 110 in the optical axis direction. In another embodiment, for example, R1 may be equal to or greater than half the stroke of the bobbin 110 in the optical axis direction and equal to or less than 1.5 times the stroke of the bobbin 110 in the optical axis direction. For example, the stroke of the bobbin 110 in the optical axis direction may be the distance between the highest and lowest points of the position of the bobbin 110. Also, for example, the stroke of the bobbin 110 in the optical axis direction may be the distance between the highest and lowest positions to which the bobbin 110 can physically move.

[0387] The diameter R1 of the sliding member 21 may be 0.4 mm to 2 mm. In another embodiment, the diameter R1 of the sliding member 21 may be 0.6 mm to 1.5 mm. In yet another embodiment, the diameter R1 of the sliding member 21 may be 0.7 mm to 1 mm. If R1 is less than 0.4 mm, the diameter is too small to stably support the bobbin 110. If R1 exceeds 2 mm, the diameter of the sliding member 21 may be too large, which may increase the size of the lens driving device 100 in a direction perpendicular to the optical axis.

[0388] For example, the stroke (or movable distance) of the bobbin 110 in the optical axis direction can be 12 percent or more and 50 percent or less of the length L1 in the optical axis direction of the slide member 21. If the stroke (or movable distance) of the bobbin 110 in the optical axis direction is less than 12 percent of L1, the length of the slide member 21 becomes unnecessarily or unintentionally large compared to the stroke of the bobbin 110, which may unnecessarily or unintentionally increase the weight of the lens driving device.

[0389] If the stroke (or movable distance) of the bobbin 110 in the optical axis direction exceeds 50 percent of L1, L1 may be too small to stably support the bobbin 110, resulting in poor reliability of the AF drive. In other embodiments, the stroke (or movable distance) of the bobbin 110 in the optical axis direction may be 20 percent or more and 40 percent or less of L1.

[0390] The length L1 of the slide member 21 in the optical axis direction may be equal to or greater than the length H1 of the magnet 130 in the optical axis direction. In other embodiments, L1 may be smaller than H1.

[0391] For example, the length L1 of the slide member 21 in the optical axis direction may be 70 percent (%) or more of the length H1 of the magnet 130 in the optical axis direction. Also, for example, the length L1 of the slide member 21 in the optical axis direction may be 150 percent (%) or less of H1. In other embodiments, L1 may be 80 percent (%) or more and 120 percent (%) or less of H1. In still other embodiments, L1 may be 90 percent (%) or more and 110 percent (%) or less of H1.

[0392] If L1 is less than 70 percent of H1, the length of the sliding member 21 may be too short and the attractive force between the sliding member 21 and the magnet 130 may not be sufficient to stably support the bobbin 110 relative to the housing 140. On the other hand, if L1 is more than 150 percent of H1, the length of the sliding member 21 may be too large and the size of the lens driving device 100 may increase.

[0393] For example, at the highest position of the bobbin 110, the height of the upper surface (or uppermost end) of the magnet 130 may be lower than or equal to the height of the upper surface (or uppermost end) of the slide member 21. In other embodiments, at the highest position of the bobbin 110, the height of the upper surface (or uppermost end) of the magnet 130 may be higher than the height of the upper surface (or uppermost end) of the slide member 21.

[0394] For example, at the lowest point position of the bobbin 110, the height of the lower surface (or the lowest end) of the magnet 130 may be higher than or the same as the height of the lower surface (or the lowest end) of the slide member 21. In other embodiments, at the lowest point position of the bobbin 110, the height of the lower surface (or the lowest end) of the magnet 130 may be lower than the height of the lower surface (or the lowest end) of the slide member 21.

[0395] The length L1 of the slide member 21 in the optical axis direction may be 40 to 90 percent of the distance H3 from the top of the cover member 300 (or the top of the upper plate 301) to the bottom of the housing 140 (or the bottom of the lower portion 144). If L1 is less than 40 percent of H3, the support force of the slide member 21 for the bobbin 110 decreases, and the bobbin 110 cannot be stably supported within a predetermined stroke range. If L1 exceeds 90 percent of H3, stable support of the bobbin 110 is ensured, but the length of the slide member 21 increases unnecessarily, which may increase the weight of the lens driving device. In other embodiments, L1 may be 50 to 80 percent of H3. Alternatively, L1 may be 60 to 80 percent of H3.

[0396] The length H2 of the coil 120 in the optical axis direction may be smaller than the length L1 of the sliding member 21 in the optical axis direction. In another embodiment, the length L1 of the sliding member 21 in the optical axis direction and the length H2 of the coil 120 in the optical axis direction may be the same. In yet another embodiment, H2 may be larger than L1.

[0397] For example, the length H2 of coil 120 in the optical axis direction is greater than or equal to a lower limit and less than or equal to an upper limit, where the lower limit is L1 minus 30 percent of L1 and the upper limit is L1 plus 30 percent of L1. If H2 is less than the lower limit, the length of coil 120 in the optical axis direction is too short to obtain the required driving force for AF drive. If H2 is greater than or equal to the upper limit, the length of slide member 21 is too short to stably support bobbin 110.

[0398] In the comparative example, in which the shaft member penetrates a part of the bobbin (e.g., a ring) to be coupled to the bobbin, if the shaft member does not have good linearity, a problem may occur in which the shaft member is pinched by the part of the bobbin (e.g., the ring). Also, in the comparative example, in order to press the bobbin against the shaft member and stably support the bobbin in the housing, a separate yoke is required that is disposed in the housing and generates an attractive force against the magnet coupled to the bobbin.

[0399] In this embodiment, the bobbin 110 has a structure including seats 105A and 105B that come into contact with a part of the slide member 21, so that the slide member 21 does not get caught due to poor linearity of the shaft member during AF drive.

[0400] The position sensor 170 can sense the magnet 130 disposed on the bobbin 110. For example, the position sensor 170 can sense the displacement or position of the bobbin 110 in the optical axis direction.

[0401] For example, position sensor 170 may be disposed in housing 140. For example, position sensor 170 may be disposed on first side 141A of housing 140. For example, position sensor 170 may be disposed in seat 142A of housing 140. For example, position sensor 170 may be disposed within the hollow of coil 120. In other embodiments, position sensor 170 may be disposed outside the hollow of coil 120.

[0402] For example, the position sensor 170 can be coupled to the circuit board 190 by a conductive adhesive or solder. For example, the position sensor 170 can be coupled to the first substrate 191 by a conductive adhesive or solder. For example, the position sensor 170 can be electrically connected to the circuit board 190, e.g., the first substrate 191.

[0403] For example, the position sensor 170 can be disposed on a circuit board 190, e.g., a first surface of the first substrate 191. For example, the position sensor 170 can be coupled to the circuit board 190, e.g., a first surface of the first substrate 191.

[0404] For example, the position sensor 170 may correspond to, face, or overlap with the magnet 130 in a direction perpendicular to the optical axis.

[0405] For example, the position sensor 170 can sense the strength of the magnetic field of the magnet 130 attached to the bobbin 110 as the bobbin 110 moves, and can output an output signal according to the sensing result.

[0406] The position sensor 170 may be implemented in the form of a driver IC including a Hall sensor, or may be implemented as a position detection sensor such as a Hall sensor alone.

[0407] For example, if the position sensor 170 is a driver IC including a Hall sensor, the position sensor 170 can transmit and receive data to and from the outside via data communication using a protocol, for example, I2C communication.

[0408] For example, if the position sensor 170 is a driver IC including a Hall sensor, the position sensor 170 may include first and second terminals for inputting a power supply or a drive signal, a third terminal for a clock signal, a fourth terminal for a data signal, and fifth and sixth terminals for supplying a drive signal to the coil 120.

[0409] Here, the first to fourth terminals of the position sensor 170 may be electrically connected to a corresponding one of the first to fourth terminals B1 to B4 of the circuit board 190. In addition, the fifth and sixth terminals of the position sensor 170 may be electrically connected to the coil 120. For example, the fifth terminal of the position sensor 170 may be electrically connected to one end of the coil 120, and the sixth terminal of the position sensor 170 may be electrically connected to the other end of the coil 120.

[0410] In an embodiment in which position sensor 170 is implemented solely as a Hall sensor, position sensor 170 may include two input terminals and two output terminals. In this case, circuit board 190 may include four terminals (e.g., B1 to B4) electrically connected to the two input terminals and two output terminals of position sensor 170, and two terminals (e.g., B5 and B6) electrically connected to coil 120. In this case, a drive signal may be supplied to coil 120 via the two terminals (e.g., B5 and B6) of circuit board 190.

[0411] The capacitor 195 may be disposed in the housing 140. For example, the capacitor 195 may be disposed on the first side 140A of the housing 140. For example, the capacitor 195 may be disposed in the seat 142A of the housing 140. For example, the capacitor 195 may be disposed in the hollow of the coil 120.

[0412] The capacitor 195 may be disposed on or coupled to the circuit board 190, for example, the first board 191. For example, the capacitor 195 may be disposed on or coupled to the first surface of the circuit board 190, for example, the first board 191. The capacitor 195 may be in the form of a chip, and the chip may include a first terminal corresponding to one end of the capacitor 195 and a second terminal corresponding to the other end of the capacitor 195. The capacitor 195 may also be referred to as a "capacitive element" or a condenser.

[0413] The capacitor 195 may be electrically connected in parallel to the first and second terminals (e.g., B1, B2) of the circuit board 190 for externally supplying power (or a drive signal) to the position sensor 170. Alternatively, the capacitor 195 may be electrically connected in parallel to the first and second terminals of the position sensor 170 for supplying power or a drive signal.

[0414] The capacitor 195 is electrically connected in parallel to the first and second terminals of the position sensor 170 or the first and second terminals of the circuit board 190, and can therefore act as a smoothing circuit that removes ripple components contained in the power supplied to the position sensor 170 from the outside, thereby providing a stable and constant power signal to the position sensor 170.

[0415] The coil 230 can move the OIS moving part in a direction perpendicular to the optical axis by interacting with the magnets 31 and 23. The coil 230 can be disposed in the housing 140.

[0416] For example, the coil 230 may correspond to, face, or overlap with the magnets 31, 23 in a direction perpendicular or horizontal to the optical axis.

[0417] For example, the coil 230 may include a coil unit 230-1 arranged in the housing 140 so as to correspond to, face to, or overlap with the magnet 31, and a coil unit 230-2 arranged in the housing 140 so as to correspond to, face to, or overlap with the magnet 23.

[0418] For example, coil unit 230-1 may be disposed on second side 141B of housing 140. Also, for example, coil unit 230-2 may be disposed on fourth side 141D of housing 140. In other embodiments, coil unit 230-2 may be disposed on third side 141C of housing 140.

[0419] 17a and 17b, the coil unit 230-1 may be disposed in the first seat 144 of the housing 140, and the coil unit 230-2 may be disposed in the second seat 143A of the housing 140. Referring to FIG.

[0420] The circuit board 190 may include a second board 192 disposed on or coupled to the second side 141B of the housing 140, and a third board 193 disposed on or coupled to the fourth side 141D (or the third side 141C) of the housing 140. For example, the third board 193 may connect the first board 191 and the second board 192.

[0421] For example, the coil unit 230-1 may be arranged, mounted, or fixed to the circuit board 190 so as to correspond to, face, or overlap the magnet 31 in the third direction (Y-axis direction). For example, the coil unit 230-1 may be arranged on the second board 192 of the circuit board 190. For example, the coil unit 230-1 may be arranged, coupled, or fixed to a first surface of the second board 192 that faces or opposes the outer peripheral surface of the bobbin 110. The coil unit 230-1 may be coupled to the circuit board 190, for example, the second board 192, by a conductive adhesive or solder. The coil unit 230-1 may be electrically connected to the circuit board 190, for example, the second board 192.

[0422] The coil unit 230-1 may include two coil units 230A and 230B or two coil bodies, or in other embodiments, the coil unit 230-1 may include a single coil unit or coil body.

[0423] For example, each of the two coil units can be arranged to correspond to, face, or overlap with a corresponding one of the two magnet units 31A and 31B.

[0424] For example, coil unit 230-2 may be disposed, mounted, or fixed to circuit board 190 so as to correspond to, face, or overlap magnet 23 in the second direction (X-axis direction). For example, the second direction (x-axis direction) may be a direction perpendicular to the optical axis and extending from third side surface 110C to fourth side surface 110D of bobbin 110. Furthermore, for example, the second direction may be a direction perpendicular to the optical axis and extending from third side surface 141C to fourth side surface 141D of housing 140.

[0425] For example, the coil unit 230-2 may be disposed on the third substrate 193 of the circuit board 190. For example, the coil unit 230-2 may be disposed on, coupled to, or fixed to a first surface of the third substrate 193 that faces or opposes the outer peripheral surface of the bobbin 110. The coil unit 230-2 may be coupled to the circuit board 190, e.g., the third substrate 193, by a conductive adhesive or solder. The coil unit 230-2 may be electrically connected to the circuit board 190, e.g., the third substrate 192.

[0426] For example, coil unit 230-1 may include a hollow. For example, each of the two coil units 230A, 230B may include a hollow. Coil unit 230-1 may have a ring shape. For example, each of the two coil units 230A, 230B may have a ring shape. For example, coil unit 230-1 may have a ring shape wound around an axis that is perpendicular to the optical axis OA and perpendicular to the outer surface of second side portion 141B of housing 140.

[0427] Furthermore, the coil unit 230-2 may include a hollow. For example, the coil unit 230-2 may have a ring shape. For example, the coil unit 230-2 may be a ring shape wound around a straight line that is perpendicular to the optical axis OA and perpendicular to the outer surface of the fourth side portion 141D (or the third side portion 141C) of the housing 140.

[0428] In another embodiment, the coil units 120 and 230 may be formed on the circuit board 190 in the form of a fine pitch (FP) coil.

[0429] A first drive signal may be applied to the coil 230-1 to generate an electromagnetic force due to electromagnetic interaction with the magnet 31. For example, two coil units 230A and 230B may be connected in series. The first drive signal may be supplied to the two coil units 230A and 230B connected in series. For example, the coil unit 230-1 may include a connecting line connecting the two coil units 230A and 230B in series with each other.

[0430] Also, a second drive signal can be applied to the coil 230-2 to generate an electromagnetic force due to electromagnetic interaction with the magnet 23.

[0431] The first and second drive signals may be independent signals, may be direct current signals, may be voltage signals or current signals, and may include at least one of a direct current signal and an alternating current signal.

[0432] The OIS moving unit can move in a second direction (e.g., the X-axis direction) due to the interaction between coil unit 230-1 and magnet 31 to which the first drive signal is applied, and the OIS moving unit can move in a third direction (e.g., the Y-axis direction) due to the interaction between coil unit 230-2 and magnet 23 to which the second drive signal is applied. By adjusting the magnitude and / or direction of the first and second drive signals, the movement of the OIS moving unit in the second or third direction can be controlled, thereby performing image stabilization.

[0433] The position sensor 240 can sense the magnets 31 and 23 disposed in the OIS moving part. For example, the position sensor 240 can sense the displacement or position of the OIS moving part, for example, the frame 10, in a direction perpendicular to the optical axis.

[0434] For example, the position sensor 240 may be disposed on the housing 140. For example, the position sensor 240 may include a first sensor 240A disposed on the second side 141B of the housing 140 and a second sensor 240B disposed on the fourth side 141D of the housing 140.

[0435] For example, the first sensor 240A may be disposed in the third direction (e.g., the Y-axis direction) so as to correspond to, face to, or overlap with the magnet 31. For example, the second sensor 240B may be disposed in the second direction (e.g., the X-axis direction) so as to correspond to, face to, or overlap with the magnet 23.

[0436] For example, the first sensor 240A may be located in the first seat 144A of the housing 140. For example, the second sensor 240B may be located in the second seat 143A of the housing 140.

[0437] For example, the first sensor 240A may be disposed within the hollow of the coil unit 230-1, e.g., the coil unit 230A. The second sensor 240B may be disposed within the hollow of the coil unit 230-2. In other embodiments, the first sensor 240A (or the second sensor 240B) may be disposed outside the hollow of the coil unit 230-1 (or 230-2).

[0438] For example, the first sensor 240A and the second sensor 240B may be coupled to the circuit board 190 by a conductive adhesive or solder. For example, the first sensor 240A may be coupled to the second board 192 by a conductive adhesive or solder, and the second sensor 240B may be coupled to the third board 192 by a conductive adhesive or solder. For example, the first sensor 240A may be electrically connected to the circuit board 190, e.g., the second board 192, and the second sensor 240B may be electrically connected to the circuit board 190, e.g., the third board 193.

[0439] For example, the first sensor 240A can be disposed on a first surface of the circuit board 190, e.g., the second board 192. For example, the first sensor 240A can be coupled to the first surface of the circuit board 190, e.g., the second board 192. For example, the second sensor 240B can be disposed on a first surface of the circuit board 190, e.g., the third board 193. For example, the second sensor 240B can be coupled to the first surface of the circuit board 190, e.g., the third board 193.

[0440] For example, the first sensor 240A can sense the strength of the magnetic field of the magnet 31 due to the movement of the OIS moving part and can output a first output signal according to the sensing result. For example, the second sensor 240B can sense the strength of the magnetic field of the magnet 23 due to the movement of the OIS moving part and can output a second output signal according to the sensing result.

[0441] The first sensor 240A and the second sensor 240B may be implemented in the form of a driver IC including a Hall sensor, or may be implemented as a position detection sensor such as a Hall sensor alone. Here, the description of the case where the position sensor 170 is implemented in the form of a driver IC including a Hall sensor may be applied mutatis mutandis to the first sensor 240A and the second sensor 240B. Furthermore, the description of the case where the position sensor 170 is implemented as a position detection sensor such as a Hall sensor alone may be applied mutatis mutandis to the first sensor 240A and the second sensor 240B.

[0442] 18a to 20, the frame 10 is disposed in a housing 140. The bobbin 110 may be disposed in the frame 10. The frame 10 may be movable in a second direction or a third direction. The frame 10 may be referred to as a "carrier," a "moving part," a "holder," a "case," or a "base."

[0443] For example, the frame 10 may include a first frame 20 and a second frame 30 disposed on the first frame 20 .

[0444] 15, the first frame 20 may include an opening 20A or a hollow for accommodating the bobbin 110. The opening 20A (or hollow) of the first frame 20 may be a through-hole that penetrates the first frame 20 in the optical axis direction.

[0445] The first frame 20 may include first to fourth side portions 51A to 51D that correspond to, face, or overlap with the first to fourth side surfaces 110A to 110D of the bobbin 110 or the first to fourth side portions 141A to 141D of the housing 140.

[0446] For example, at least one groove 4A to 4D may be provided on the inner surface of each of the side portions 51A to 51D of the first frame 20. For example, each of the first to fourth side portions 51A to 51D may have a groove 4A to 4D recessed from the inner surface.

[0447] The first frame 20 may include a seat 3 for receiving or arranging the magnet 31. For example, the seat 3 may be arranged on the second side 51B of the first frame 20. For example, the seat 3 may be in the form of a groove. For example, the seat 3 may be a groove formed in the second side 51B of the first frame 20. In another embodiment, the seat 3 may be in the form of a through-hole. For example, the shape of the seat 3 may match or be the same as the shape of the magnet 31.

[0448] For example, the first frame 20 may include a protrusion 35 that protrudes in the optical axis direction or upward from the upper surface of the second side portion 51B of the first frame 20, and the seat 3 may be formed on the protrusion 35. For example, the seat 3 may be a groove recessed from the outer surface of the protrusion 35.

[0449] For example, the first frame 20 may include a first protrusion 35A and a second protrusion 35B that protrude in the optical axis direction or upward from the upper surface of the second side portion 51B. A first seat 3A may be formed on the first protrusion 35A, and a second seat 3B may be formed on the second protrusion 35B. The magnet unit 31A may be disposed on the first seat 35A, and the magnet unit 31B may be disposed on the second seat 35B. In another embodiment, the first frame 20 may have one seat 3, and the magnet 31 may include one magnet unit and be disposed on the seat 3.

[0450] 18c and 18d, the first frame 20 may include a groove 72 in which at least another portion of the slide member 42 is disposed, seated, or inserted. For example, the groove 72 may be recessed from the lower surface 81A of the first frame 20. The lower surface 81A of the first frame 20 may face or be opposite to the upper surface 145 of the lower portion 145 of the housing 140.

[0451] The groove 72 can serve as a guide member that prevents the first frame 20 from separating from the slide member 42 when the first frame 20 moves in the second direction (e.g., the X-axis direction) along the slide member 42. For example, the groove 72 can be expressed as an "accommodation groove," a "guide groove," a "guide portion," or a rail recess.

[0452] The groove 72 may include a plurality of grooves 45A to 45D that are spaced apart from one another. For example, the groove 72 may include four grooves 72A to 72D, and each of the four grooves 72A to 72D may be disposed adjacent to a corresponding one of the four corners of the first frame 20.

[0453] For example, each of the four grooves 72A to 72D may be disposed between a corresponding one of the four corners of the first frame 20 and the opening 20A of the first frame 20.

[0454] The grooves 72 may correspond to, face each other, or overlap with the accommodation portions 45 of the housing 140 in the first direction or the optical axis direction. For example, each of the plurality of grooves 72A to 72D of the first frame 20 may correspond to, face each other, or overlap with a corresponding one of the plurality of grooves 45A to 45D of the housing 140 in the first direction or the optical axis direction.

[0455] For example, the groove 72 may correspond to, face, or overlap with the slide member 42 in the first direction or the optical axis direction. For example, each of the plurality of grooves 72A-72D of the first frame 20 may correspond to, face, or overlap with a corresponding one of the plurality of shaft members 42A-42D in the first direction or the optical axis direction.

[0456] For example, groove 72 may extend in the second direction. For example, the length K1 of groove 72 in the second direction may be greater than the length K2 of groove 72 in the third direction. K1 may be the shortest length of groove 72 in the second direction, and K2 may be the shortest length of groove 72 in the third direction. In other embodiments, the length of groove 72 in the second direction may be the same as the length of groove 72 in the third direction.

[0457] For example, the length K1 of the groove 72 in the second direction may be greater than the length L3 of the slide member 42 in the second direction (K1>L3). In other embodiments, K1 and L3 may be the same.

[0458] For example, the length L3 of the slide member 42 in the second direction may be greater than the length R3 of the slide member 42 in the third direction (or the first direction) (or the diameter of the slide member 42). In other embodiments, L3 and R3 may be the same.

[0459] For example, the length K1 of the groove 72 in the second direction may be greater than the length M1 of the groove 45 of the housing 140 in the second direction. Because K1 is greater than M1, the first frame 20 can easily move in the second direction. In other embodiments, K1 and M1 may be the same. The length M1 of the groove 45 of the housing 140 in the second direction may be greater than the length M2 of the groove 45 in the third direction. In other embodiments, M1 and M2 may be the same.

[0460] For example, the grooves 72 may include openings that are open on the outer surface of the first frame 20. In other embodiments, the grooves 72 may be closed rather than open on the outer surface of the first frame 20. For example, the grooves 72 may be closed rather than open on the inner surface of the first frame 20.

[0461] 18d, the groove 72 may include a first surface 7A that is stepped relative to the lower surface 81A of the first frame 20, a second surface 7B that connects one side of the first surface 7A to the lower surface 81A, and a third surface 7C that connects the other side of the first surface 7A to the lower surface 81A. The first surface 7A may be located higher than the lower surface 81A and closer to the upper surface 81B of the first frame 20 than the lower surface 81A. For example, the second surface 7B and the third surface 7C may be inclined relative to the first surface 7A. In other embodiments, the groove 72 may omit the first surface 7A, and the second surface 7B (referred to as the "first surface") and the third surface 7C (referred to as the "second surface") may meet, with a boundary line formed between the second surface 7B and the third surface 7C.

[0462] For example, the slide member 42 can come into contact with at least one of the first to third surfaces of the groove 72. The region or area where the first frame 20 and the slide member 42 come into contact can be determined depending on the shape of the groove 72 of the first frame 20. For example, if the groove 72 is V-shaped, the V-shaped inner surface (e.g., two surfaces) of the groove 72 of the frame 20 can come into contact with the slide member 42.

[0463] For example, the shape of groove 72 when viewed in a first direction or from below, or the cross-sectional shape of groove 72 in the first direction, can be triangular, semicircular, or polygonal (e.g., square or pentagonal, etc.), or, for example, groove 72 can be "V"-shaped or "U"-shaped.

[0464] 18a and 18b, the first frame 20 may include a receiving portion 71 for fixing or supporting the slide member 41. The receiving portion 71 may be interchangeably referred to as a "fixing portion," a "groove," or an "accommodating groove." The receiving portion 71 may be disposed on or formed in the upper surface 81B of the first frame 20. For example, the receiving portion 71 may be disposed on or formed in the upper surface 81B of at least one of the side portions 51A to 51D of the first frame 20. For example, the receiving portion 71 may be a groove recessed from the upper surface 81B of the first frame 20.

[0465] For example, the receiving portion 71 may include a plurality of grooves. For example, the number of grooves in the receiving portion 71 may be two or more. For example, the receiving portion 71 may include four grooves 71A to 71D that are spaced apart from one another. For example, each of the four grooves 71A to 71D may be disposed adjacent to a corresponding one of the four corners of the first frame 20.

[0466] For example, each of the four grooves 71A to 71D can be disposed between a corresponding one of the four corners of the first frame 20 and the opening 20A of the first frame 20.

[0467] The slide member 41 may be coupled to the first frame 20 by an adhesive or fixed to the first frame 20. For example, at least a portion of the slide member 41 may be coupled to the first frame 20 or fixed to the first frame 20.

[0468] For example, the slide member 41 may be coupled to or fixed to the upper portion or upper surface 81B of the first frame 20. For example, at least a portion of the slide member 41 may be coupled to or fixed to a receiving portion 71 of the first frame 20. For example, the receiving portion 71 having a groove shape may increase the contact area between the slide member 41 and the adhesive, thereby increasing the bonding force between the slide member 41 and the first frame 20 and firmly fixing the slide member 41 to the first frame 20.

[0469] At least another portion of the slide member 41 protrudes outside the receiving portion 71 of the first frame 20, and at least another portion of the slide member 41 protruding outside the receiving portion 71 can come into contact with the second frame 30. For example, at least another portion of the slide member 41 protruding outside the receiving portion 71 can come into contact with the groove 61 of the second frame 30.

[0470] The slide member 41 may include a plurality of shaft members 41A to 41D. The number of shaft members may be two or more. For example, the slide member 41 may include four shaft members 41A to 41D spaced apart from one another.

[0471] For example, each of the four shaft members 41A to 41D may be disposed adjacent to a corresponding one of the four corners of the first frame 20. For example, each of the four shaft members 41A to 41D may be disposed between a corresponding one of the four corners of the first frame 20 and the opening 20A of the second frame 20.

[0472] In another embodiment, the two shaft members 41A and 41D may extend in the third direction and be connected to each other, and the two shaft members 41B and 41C may extend in the third direction and be connected to each other.

[0473] 19a to 19c, the second frame 30 may include an opening 30A or a hollow for accommodating the bobbin 110. The opening 30A (or hollow) of the second frame 30 may be a through-hole that penetrates the second frame 30 in the optical axis direction.

[0474] The second frame 30 may include first to fourth side portions 41A to 41D that correspond to, face, or overlap with the first to fourth side surfaces 110A to 110D of the bobbin 110 or the first to fourth side portions 141A to 141D of the housing 140.

[0475] The first to fourth side portions 41A to 41D of the second frame 30 may correspond to, face, or overlap with the first to fourth side portions 51A to 51D of the first frame 20.

[0476] For example, the inner surface of each of the side portions 41A to 41D of the second frame 30 has at least one groove 4E to 4H For example, each of the first to fourth side portions 41A to 41D may have grooves 4E to 4F recessed from the inner surface. 4H can be formed.

[0477] At least a part of the protruding portions 118A to 118D of the bobbin 110 is fitted into the grooves 4A to 4D of the first frame 20 and the grooves 4A to 4D of the second frame 20. 4EThe protrusions 118A to 118D of the bobbin 110 and the grooves 4A to 4H of the first and second frames 20, 30 can prevent the bobbin 110 from rotating or tilting about the optical axis beyond a predetermined range.

[0478] The second frame 30 may include a seat 25 for receiving or positioning the magnet 23. For example, the seat 25 may be positioned on the fourth side 41D of the second frame 30. In another embodiment, the seat 25 may be positioned on the third side 41C of the second frame 30. For example, the seat 25 may be in the form of a through-hole. For example, the seat 25 may be a hollow or a through-hole formed on the fourth side 41D of the second frame 30. In another embodiment, the seat 25 may be in the form of a groove. The shape of the seat 25 may match or be the same as the shape of the magnet 23.

[0479] The second frame 30 may include a groove 61 in which at least another portion of the slide member 41 is disposed, seated, or inserted. For example, the groove 61 may be recessed from the lower surface 48A of the second frame 30. The lower surface 48A of the second frame 30 may face or oppose the upper surface 81B of the first frame 20.

[0480] The groove 61 can serve as a guide member that prevents the second frame 30 from separating from the slide member 41 when the second frame 30 moves in the third direction (e.g., the Y-axis direction) along the slide member 41. For example, the groove 61 can also be expressed as a "receiving groove," a "guide groove," a "guide portion," or a rail recess.

[0481] The groove 61 may include a plurality of grooves 61A to 61D spaced apart from one another. For example, the groove 61 may include four grooves 61A to 61D, each of which may be disposed adjacent to a corresponding one of the four corners of the second frame 30.

[0482] For example, each of the four grooves 61A to 61D may be disposed between a corresponding one of the four corners of the second frame 30 and the opening 30A of the second frame 30.

[0483] The groove 61 of the second frame 30 may correspond to, face, or overlap with the receiving portion 71 of the first frame 20 in the first direction or the optical axis direction.

[0484] For example, each of the plurality of grooves 61A to 61D of the second frame 30 can correspond to, face, or overlap with a corresponding one of the plurality of grooves 71A to 71D of the first frame 20 in the first direction or the optical axis direction.

[0485] For example, the groove 61 of the second frame 30 may correspond to, face, or overlap with the slide member 41 in the first direction or the optical axis direction. For example, each of the plurality of grooves 61A-61D of the second frame 30 may correspond to, face, or overlap with a corresponding one of the plurality of shaft members 41A-41D of the slide member 41 in the first direction or the optical axis direction.

[0486] For example, the groove 61 may extend in a third direction (for example, the Y-axis direction). For example, the length Q1 of the groove 72 in the third direction may be greater than the length Q2 of the groove 61 in the second direction. Q1 is the length in the third direction. Q2 may be the minimum length of the groove 61 in the second direction, and Q3 may be the minimum length of the groove 61 in the second direction. In other embodiments, the length of the groove 61 in the second direction may be the same as the length of the groove 61 in the third direction.

[0487] For example, the length Q1 of the groove 61 in the third direction may be greater than the length L2 of the slide member 41 in the third direction (Q1>L2). In other embodiments, Q1 and L2 may be the same. The length L2 of the slide member 41 in the third direction may be greater than the length R2 (or the diameter of the slide member 41) in the second direction (or the first direction) of the slide member 41. In other embodiments, L2 and R2 may be the same.

[0488] For example, the length Q1 in the third direction of the groove 61 of the second frame 30 may be greater than the length E1 in the third direction of the accommodating portion 71 of the first frame 20. Because Q1 is greater than E1, the second frame 30 can easily move in the third direction. In other embodiments, Q1 and E1 may be the same. For example, the length E1 in the third direction of the accommodating portion 71 of the first frame 20 may be greater than the length E2 in the second direction of the accommodating portion 71. In other embodiments, E1 and E2 may be the same.

[0489] For example, groove 61 may include an opening that is open on the outer surface of second frame 30. In other embodiments, groove 61 may be closed rather than open on the outer surface of second frame 20. For example, groove 61 may be closed rather than open on the inner surface of second frame 20. The description of first to third surfaces 7A to 7C of groove 72 of first frame 20 in Figure 18d applies or can be applied mutatis mutandis to groove 61 of second frame 30 in Figure 19b.

[0490] For example, the slide member 41 can come into contact with at least one of the first to third surfaces 7A to 7C of the groove 61. The region or area of ​​contact between the second frame 30 and the slide member 41 can be determined depending on the shape of the groove 61 of the second frame 30. For example, if the groove 61 is V-shaped, the V-shaped inner surface (e.g., two surfaces) of the groove 61 of the frame 30 can come into contact with the slide member 41.

[0491] For example, the shape of groove 61 when viewed in a first direction or from below, or the cross-sectional shape of groove 61 in the first direction, can be triangular, semicircular, or polygonal (e.g., square or pentagonal, etc.), or, for example, groove 61 can be "V"-shaped or "U"-shaped.

[0492] 18a and 19b, a groove 82 may be formed on an upper surface 81B of the first frame 20, and a protrusion 49 may be formed on a lower surface of the second frame 30, corresponding to the groove 82 of the first frame 20. The groove 82 may be recessed from the upper surface 81B of the first frame 20, and the protrusion 49 may protrude from the lower surface 48A of the second frame 30.

[0493] For example, the groove 82 may include an opening that opens onto the outer surface of the first side portion 51 a of the first frame 20 .

[0494] For example, the protrusion 49 of the second frame 30 may be inserted into or placed in the groove 82 of the first frame 20. For example, the groove 82 may be placed on the upper surface of the first side portion 51a of the first frame 20, and the protrusion 49 may be placed on the lower surface of the first side portion 41A of the second frame 30. The groove 82 of the first frame 20 and the protrusion 49 of the second frame 30 can guide movement of the second frame 30 in the third direction. The groove 82 of the first frame 20 and the protrusion 49 of the second frame 30 can also guide the position at which the second frame 30 is placed on the first frame 20.

[0495] The second frame 30 may include a receiving portion 28 for disposing the magnet 180. For example, the receiving portion 28 may be disposed on the third side portion 41C of the second frame 30. For example, the receiving portion 28 may be a groove recessed from the top surface 48B of the second frame 30. For example, the receiving portion 28 may include an opening that opens on the top surface 48B of the second frame 30. Furthermore, for example, the receiving portion 28 may include an opening that opens on the outer surface of the third side portion 41C of the second frame 30.

[0496] The second frame 30 may also include a receiving portion 26 for receiving the slide member 21. The receiving portion 26 may be disposed on the first side portion 41A of the second frame 30.

[0497] In order to ensure a range of movement or stroke section of the bobbin 110 in the optical axis direction, the lower end of the slide member 21 can be coupled to a region of the second frame 30 located below the upper surface 48B of the second frame 30.

[0498] For example, the second frame 30 may include a first surface 48C that is stepped relative to the top surface 48B of the second frame 30. For example, the first surface 48C may be located below the top surface 48B of the second frame 30. For example, the first surface 48C may be part of the top surface of the first side 41A of the second frame 30.

[0499] For example, the receiving portion 26 may be a groove recessed from the first surface 48C of the second frame 30. In another embodiment, the receiving portion 26 may be a through-hole. The lower portion or lower end of the sliding member 21 may be coupled to or fixed to the receiving portion 26 with an adhesive. Another portion of the sliding member 21 may be disposed within the seat 105 of the bobbin 110.

[0500] The receiving portion 26 may include two grooves 26A, 26B that correspond to, face each other, or overlap with the two shaft members 21A, 21B.

[0501] The second frame 30 may include a support portion 9 disposed around the accommodating portion 28 and protruding in a first direction from the first surface 48C. The support portion 9 may be interchangeably referred to as a "protrusion," "protrusion," or "guide portion." When viewed from above, the support portion 9 may be semicircular or semielliptical, for example, but may also be circular or elliptical in other embodiments.

[0502] The support portion 9 may include a first support portion 9A arranged adjacent to the first groove 9A of the second frame 30, and a second support portion 9B arranged adjacent to the second groove 9A of the second frame 30. The support portion 9 may support a region of the slide member 21 that contacts one end of the slide member 21 arranged in the accommodation portion 9 of the second frame 30.

[0503] 19a and 21c, for example, the slide member supported by the support portion 9 21 The region of the slide member 21 supported by the support portion 9 may be a region of the slide member 21 that faces or opposes the second side portion 41B of the second frame 30.

[0504] For example, the support 9 may correspond to, face, or overlap with the seat 105 of the bobbin 110 in the optical axis direction. Since the support 9 overlaps with the seat 105 of the bobbin 110 in the optical axis direction, spatial interference between the support 9 and the bobbin 110 can be avoided when the bobbin 110 moves in the optical axis direction.

[0505] The second frame 30 may include a second surface 48D that is positioned higher than the first surface 48C and lower than the top surface 48B. For example, the second surface 48D may be located on the first side 41A of the second frame 30. For example, the second surface 48D may be located between the first surface 48C and the top surface 48B.

[0506] The magnet 31 may be disposed on the first frame 20. For example, the magnet 31 may be disposed on the second side portion 51B of the first frame 20. The magnet 31 may include a first magnet unit 31A and a second magnet unit 31B.

[0507] The magnet 23 may be disposed on the second frame 30. For example, the magnet 23 may be disposed on the fourth side portion 41D of the second frame 930.

[0508] Each of the magnets 31 and 23 may be a monopole magnetized magnet having opposite polarities and a naturally formed boundary between the opposite polarities. For example, the magnets 31 and 23 may be a monopole magnetized magnet divided into north and south poles in a direction perpendicular to the optical axis. In another embodiment, the magnets 31 and 23 may be a monopole magnetized magnet divided into north and south poles in the optical axis direction.

[0509] In still another embodiment, the magnets 31 and 23 may be four-pole magnets or bipolar magnets to improve the electromagnetic force. For example, the magnets 31 and 23 may include a first magnet having a north pole and a south pole, a second magnet having a south pole and a north pole, and a partition wall disposed between the first magnet and the second magnet.

[0510] At least a portion of the slide member 21 may be coupled to or fixed to the second frame 30. For example, by using an adhesive, at least a portion of the slide member 21 may be coupled to or fixed to the receiving portion 26 of the second frame 30. The slide member 21 may support the bobbin 110 relative to the second frame 30 so that the bobbin 110 can move in the optical axis direction.

[0511] At least a portion of the bobbin 110, for example, the seat 105, can contact at least a portion of the slide member 21. For example, the groove 33 of the bobbin 110 can contact at least another portion of the slide member 21.

[0512] Furthermore, in order to reduce the frictional force between the bobbin 110 and the slide member 21, a lubricant may be disposed between the bobbin 110 and the slide member 21. For example, the lubricant may be a grease-based lubricant, such as SDM (steel dust meter)-378 grease, but is not limited thereto.

[0513] For example, a lubricant may be disposed between the seat 105 of the bobbin 110 and the slide member 21. Alternatively, for example, a lubricant may be disposed between the groove 33 of the seat 105 and the slide member 21. The lubricant allows the bobbin 110 to slide smoothly relative to the slide member 21.

[0514] The slide member 42 may be disposed between the housing 140 and the first frame 20. At least a portion of the slide member 42 may be coupled to the housing 140 or fixed to the housing 140.

[0515] At least another portion of the slide member 42 can contact the first frame 20 .

[0516] In order to reduce the frictional force between the first frame 20 and the slide member 42, a lubricant may be disposed between the first frame 20 and the slide member 42. For example, the lubricant may be disposed between the groove 72 of the first frame 20 and the slide member 42. For example, the lubricant may be disposed in the groove 72 of the first frame 20.

[0517] The first frame 20 is disposed on the slide member 42 and can slide or glide in a second direction (e.g., the X-axis direction) along the slide member 42. For example, the first frame 20 may not be able to move in a third direction (e.g., the Y-axis direction).

[0518] Also, the slide member 41 may be disposed between the first frame 20 and the second frame 30. At least a portion of the slide member 41 may be coupled to the first frame 20 or fixed to the first frame 20.

[0519] At least another portion of the slide member 41 can come into contact with the second frame 30 .

[0520] In order to reduce the frictional force between the second frame 30 and the slide member 41, a lubricant may be disposed between the second frame 30 and the slide member 41. For example, the lubricant may be disposed between the groove 71 of the second frame 30 and the slide member 41. For example, the lubricant may be disposed in the groove 71 of the second frame 30.

[0521] The second frame 30 is disposed on a slide member 41 and can slide or glide along the slide member 41 in a third direction (for example, the Y-axis direction).

[0522] 20, the lower portion (or lower surface) of the second frame 30 may be spaced apart from the upper portion (or upper surface) of the first frame 10 by a predetermined distance D1. 20This is to allow the second frame 30 to move along the slide member 41 in the third direction.

[0523] Any one of the slide members 41, 42 can be expressed as a "first slide member," and the other of the slide members 41, 42 can be expressed as a "second slide member."

[0524] The sliding members 41 and 42 may be interchangeably referred to as "shafts," "shaft members," "support members," "pin members," or "rod members." For example, the sliding members 41 and 42 may have rounded outer circumferential surfaces to reduce friction. For example, the cross sections of the sliding members 41 and 42 in the optical axis direction may be circular or elliptical.

[0525] The slide members 21, 41, and 42 may be or contain a magnetic material. The magnetic material may be a material that is attracted to a magnet. For example, the slide members 21, 41, and 42 may be or contain a magnetic metal material (e.g., iron).

[0526] Figure 22a shows the electromagnetic forces acting on the first and second frames 20, 30, Figure 22b is a perspective view of coils 230-1, 230-2, magnets 31, 23, and first and second frames 20, 230, Figure 22c is a perspective view of coils 120, 230, magnets 31, 23, 130, slide members 21, 41, 42, and position sensor 240, Figure 23 is a perspective view of magnets 31, 23, 130 and slide members 21, 41, 42, Figure 24 shows the attractive forces acting between magnets 31B, 23 and slide members 41B, 42B, and Figure 25 shows the attractive forces acting between magnets 31, 23 and slide members 41, 42.

[0527] Attractive forces FA1 and FA2 can act between the slide member 21 and the magnet 130. The attractive forces FA1 and FA2 acting between the slide member 21 and the magnet 130 can bring the bobbin 110 into close contact with the slide member 21, a predetermined force is applied to the slide member 21, and the bobbin 110 can be supported by the slide member 21 by the predetermined force.

[0528] Attractive forces FA1 and FA2 can be generated between the slide member 21 fixed to the second frame 30 and the magnet 130 connected to the bobbin 110, and the attractive forces FA1 and FA2 cause the slide member 21, located between the bobbin 110 and the housing 140, to be pressed by the bobbin 110 and the housing 140, allowing the slide member 21 to stably support the bobbin 110 relative to the second frame 30.

[0529] In order to increase the attractive forces FA1 and FA2 between the sliding member 21 and the magnet 130, the corners of the magnet 130 adjacent to the sliding member 21 may be chamfered.

[0530] For example, a corner of one end of the magnet 130 adjacent to the first shaft member 21A of the slide member 21 may be removed by chamfering, and the one end of the magnet 130 may have a first flat surface 17A facing the first shaft member 21A.

[0531] In addition, a corner of the other end of magnet 130 adjacent to second shaft member 21B of slide member 21 may be chamfered, and the other end of magnet 130 may have a second flat surface 17C facing second shaft member 21B. Second portion S2 of magnet 130 may be adjacent to slide member 21, and the length of second portion S2 of magnet 130 in a second direction (e.g., the X-axis direction) may decrease as it goes from first side surface 13A to second side surface 13B of magnet 130.

[0532] The bobbin 110 can then slide or glide along the slide member 21 in the first direction due to the electromagnetic force generated by the interaction between the coil 120 and the magnet 130 .

[0533] For example, the slide member 21 does not have to face or overlap the magnet 130 in the third direction (for example, the Y-axis direction).

[0534] The slide member 42 is a magnetic material, and an attractive force can be generated between the slide member 42 and the magnet 31. The attractive force acting between the slide member 42 and the magnet 31 can cause the first frame 20 to receive a force toward the housing 140. For example, the attractive force between the slide member 42 and the magnet 31 can cause the first frame 20 to adhere closely to the housing 140.

[0535] The first frame 20 can be supported relative to the housing 140 so that the first frame 20 can move in the second direction due to the attractive force between the slide member 42 and the magnet 31. Furthermore, for example, the first frame 20 can be pressed against the slide member 42 due to the attractive force acting between the slide member 42 and the magnet 31. Furthermore, for example, the first frame 20 can maintain contact with the slide member 42 due to the attractive force acting between the slide member 42 and the magnet 31.

[0536] The sliding member 41 is a magnetic material, and an attractive force can be generated between the sliding member 41 and the magnet 23. The attractive force acting between the sliding member 41 and the magnet 23 can cause the second frame 30 to receive a force toward the housing 140. For example, the attractive force between the sliding member 41 and the magnet 23 can cause the second frame 30 to come into close contact with the first frame 20.

[0537] The second frame 30 can be supported relative to the housing 140 so that the second frame 30 can move in the third direction due to the attractive force between the slide member 41 and the magnet 23. Furthermore, for example, the second frame 30 can be pressed against the slide member 41 due to the attractive force acting between the slide member 41 and the magnet 23. Furthermore, for example, the second frame 30 can maintain contact with the slide member 41 due to the attractive force acting between the slide member 41 and the magnet 23.

[0538] Attractive forces F1 and F2 can act between the slide member 42 and the magnet 31. For example, attractive force F1 can act between the shaft member 42A and the magnet unit 31A, and attractive force F2 can act between the shaft member 42B and the magnet unit 31B.

[0539] The slide member 42 is fixed to the housing 140, and the magnet 31 is coupled to or fixed to the first frame 20. Since the magnet 31 is positioned higher than the slide member 42, the first frame 20, which is the moving part, can be closely attached to the housing 140, which is the fixed part.

[0540] Due to the attractive forces F1 and F2 between the magnet 31 and the slide member 42, the first frame 20 on which the magnet 31 is arranged can receive a force toward the housing 140 side.

[0541] For example, an attractive force F1 between the magnet unit 31A and the first shaft member 42A allows the left lower portion of the first frame 20 to adhere closely to the housing 140. Furthermore, an attractive force F2 between the magnet unit 31B and the second shaft member 42B allows the right lower portion of the first frame 20 to adhere closely to the housing 140.

[0542] In order to increase the attractive forces F1 and F2 between the slide member 42 and the magnet 31, the corners of the magnet 31 adjacent to the slide member 42 may be chamfered. The corners of the magnet 31 adjacent to the slide member 42 may include an inclined surface, a chamfered surface, or a tapered surface.

[0543] For example, a corner of one end of the magnet unit 31A adjacent to the shaft member 42A of the slide member 42 may be removed by chamfering, and the one end of the magnet unit 31A may include a first flat surface 22C2 facing the shaft member 42A.

[0544] Furthermore, a corner of one end of the magnet unit 31B adjacent to the shaft member 42B of the slide member 42 is removed by chamfering, and the one end of the magnet unit 31B may include a second flat surface 27C2 facing the shaft member 42B. For example, the corner of one end of the magnet units 31A and 31B may include an inclined surface, a chamfered surface, or a tapered inclined surface.

[0545] The magnet unit 31A (or 31B) may include a first portion T1 including a first side 22A (or 27A) that faces or faces the coil 230-1, and a second portion T2 that includes a second side 22B (or 27B) that faces the bobbin 110 or is the opposite side of the first side 22A (or 27A).

[0546] For example, the length of the second portion T2 of the magnet unit 31A (or 31B) in the second direction may decrease from the first side surface 22A (or 27A) to the second side surface 22B (or 27B) of the magnet unit 31A (or 31B). The second portion T2 may be located closer to the shaft members 42A and 42B than the first portion T1.

[0547] The magnet unit 31A (or 31B) may include a third side surface 22C (or 27C) located between one side of the first side surface 22A (or 27A) and one side of the second side surface 22B (or 27B), and a fourth side surface 22D (or 27D) located between the other side of the first side surface 22A (or 27A) and the other side of the second side surface 22B (or 27B).

[0548] For example, the third side surface 22C (or 27C) of the magnet unit 31A (or 31B) may include a first surface 22C1 (or 27C1) adjacent to the first side surface 22A (or 27A) and a second surface 22C2 (or 27C2) located between the first surface 22C1 (or 27C1) and the second side surface 22B (or 27B).

[0549] For example, the first surface 22C1 (or 27C1) may be perpendicular to the first side surface 22A (or 27A) of the magnet unit 31A (or 31B), and the interior angle between the first surface 22C1 (or 27C1) and the second surface 22C2 (or 27C2) may be an obtuse angle.

[0550] Additionally, attractive forces F3 and F4 may act between the sliding member 42 and the magnet 23. The sliding member 42 is fixed to the housing 140, and the magnet 23 is coupled to or fixed to the second frame 30. Since the magnet 23 is positioned higher than the sliding member 42, the second frame 20, which is the moving part, can be closely attached to the first frame 20, which is also the moving part, and / or the housing 140, which is the fixed part.

[0551] For example, an attractive force F3 may act between one side (or one end) of the magnet 23 and the shaft member 42B, and the lower right portion of the first frame 20 may be tightly attached to the housing 140 due to the attractive force F3.

[0552] For example, an attractive force F4 may act between the other side (or other end) of the magnet 23 and the shaft member 42C, and the upper right portion of the first frame 20 may be tightly attached to the housing 140 by the attractive force F4.

[0553] In addition, attractive forces F5 and F6 may act between the sliding member 41 and the magnet 23. The sliding member 41 is fixed to the first frame 20, and the magnet 23 is coupled to or fixed to the second frame 30. Since the magnet 23 is positioned higher than the sliding member 41, the second frame 30, which is the moving part, can be closely attached to the first frame 10, which is also the moving part, and / or the housing 140, which is the fixed part.

[0554] For example, an attractive force F5 may act between one side (or one end) of the magnet 23 and the shaft member 41B, and the attractive force F5 may cause the right lower portion of the second frame 30 to adhere closely to the right lower portion of the first frame 20.

[0555] For example, an attractive force F6 can act between the other side (or other end) of the magnet 23 and the shaft member 41C, and the attractive force F6 can cause the upper right side of the second frame 30 to adhere to the upper right side of the first frame 20.

[0556] To increase the attractive forces F5 and F6 between the magnet 23 and the slide members 41B and 41C, a first corner of one end of the magnet 23 adjacent to the shaft member 41B may be chamfered, and a second corner of the magnet 23 adjacent to the shaft member 41C may be chamfered. For example, each of the first and second corners of one end of the magnet 23 may be a chamfered surface or a tapered inclined surface from the top surface of the magnet 23 to the bottom surface.

[0557] The corners of magnet 31 adjacent to slide member 42 are chamfered and removed, and the corners of magnet 23 adjacent to slide member 41 are chamfered and removed, thereby reducing magnetic field interference between magnet 31 and magnet 23. Therefore, the embodiment can prevent malfunction of OIS operation caused by magnetic field interference between magnet 31 and magnet 23, and can improve the reliability of OIS operation.

[0558] In addition, since the corners on both ends of the magnet 23 are removed in a chamfered form, the embodiment can reduce the space occupied by the magnet 23 and generate the maximum attractive force to the slide member 41.

[0559] For example, a first corner portion at one end of the magnet 23 adjacent to the shaft member 41B may include a first flat surface 28C2 facing the first shaft member 41B.

[0560] For example, a second corner portion at the other end of magnet 23 adjacent to shaft member 41C may include a second flat surface 28D2 facing second shaft member 41C.

[0561] For example, the magnet 23 may include an upper portion A1 and a lower portion A2 located below the upper portion A1. The length of the lower portion A2 of the magnet 23 in the third direction may decrease from the upper surface toward the lower surface of the magnet 23. The lower portion A2 may be located closer to the shaft members 41C and 41B than the upper portion A1.

[0562] For example, the magnet 23 may include an upper surface, a lower surface, a first side surface 28A facing or opposite to the coil 230-1, a second side surface 28B facing the bobbin 110 and being the opposite side of the first side surface 28A, a third side surface 28C located between one side of the first side surface 28A and one side of the second side surface 28B, and a fourth side surface 28D located between the other side of the first side surface 28A and the other side of the second side surface 28B and being the opposite side of the third side surface 28C.

[0563] For example, the third side surface 28C of the magnet 230 may include a first surface 28C1 and a second surface 28C2 located below the first surface and facing the shaft member 41B. For example, the first surface 28C1 may be perpendicular to the upper surface of the magnet 230, and the interior angle between the first surface 28C1 and the second surface 28C2 may be an obtuse angle.

[0564] For example, the fourth side surface 28D of the magnet 230 may include a third surface 28D1 and a fourth surface 28D2 located below the third surface 28D1 and facing the shaft member 41C. For example, the third surface 28D1 may be perpendicular to the top surface of the magnet 230, and the interior angle between the third surface 28D1 and the fourth surface 28D2 may be an obtuse angle.

[0565] 25, when viewed in the optical axis direction or from above, the magnet 31 may not overlap with the sliding member 42. In other embodiments, when viewed in the optical axis direction or from above, at least a portion of the magnet 31 may be arranged to overlap with the sliding member (e.g., 42A, 42B).

[0566] 25, magnet 23 may not overlap with slide members 41B and 41C when viewed in the optical axis direction or from above. In other embodiments, magnet 23 may be positioned so that at least a portion thereof overlaps with slide members (e.g., 41B and 41C) when viewed in the optical axis direction or from above.

[0567] For example, when viewed in the optical axis direction or from above, the shaft members 41A and 42A can be disposed inside the magnet 31. When viewed in the optical axis direction or from above, the shaft members 41B and 42B can be positioned between the magnet unit 31B and the magnet 23.

[0568] 25, when viewed along the optical axis or from above, the sliding member 41 may be positioned closer to the third and fourth sides than to the first and second sides of the first and second frames 20, 30. In other embodiments, the sliding member 41 may be positioned closer to the former than to the latter.

[0569] Also, for example, when viewed along the optical axis or from above, the sliding member 42 may be positioned closer to the first and second sides than to the third and fourth sides of the first and second frames 20, 30. In other embodiments, the sliding member 42 may be positioned closer to the former than to the latter.

[0570] The lens driving device 100 may further include a magnet 180 disposed on the second frame 30. The magnet 180 may be disposed on the third side portion 41C of the second frame 30. For example, the magnet 180 may be disposed in the receiving portion 28 of the second frame 30.

[0571] For example, when viewed in the optical axis direction or from above, at least a portion of magnet 180 may be arranged to correspond to, face, or overlap with slide member 41D or 42D. For example, when viewed in the optical axis direction or from above, at least a portion of magnet 180 may be arranged to overlap with shaft member 41D of slide member 41.

[0572] In another embodiment, the magnet 180 may be arranged to overlap at least one of the shaft members 41D and 42D when viewed in the optical axis direction or from above.

[0573] 22c illustrates one magnet 180 corresponding to, facing, or overlapping with shaft member 41D, other embodiments may further include at least one magnet (not shown) corresponding to, facing, or overlapping with at least one of the other shaft members 41A, 41B, and 41C. Here, the additional at least one magnet may be disposed on, coupled to, or fixed to second frame 30. Second frame 30 may be provided with a receiving portion, for example, a groove, for receiving the additional at least one magnet. An attractive force may act between the corresponding at least one magnet and at least one shaft member, thereby stably supporting frames 20 and 30.

[0574] The magnet 31 may be disposed on the first frame 20 so as to correspond to, face, or overlap with the coil 230-1 in the third direction. For example, an electromagnetic force Fx due to the interaction between the magnet 31 and the coil 230-1 may be generated in the second direction.

[0575] The magnet 23 may be disposed on the second frame 30 so as to correspond to, face, or overlap with the coil 230-2 in the second direction. For example, an electromagnetic force Fy due to the interaction between the magnet 23 and the coil 230-2 may act in a third direction.

[0576] Since the slide member 42 is fixed to the housing 140 and the groove 71 of the first frame 20 extends in the second direction, the first frame 20 can move in the second direction but cannot move in the third direction. Also, since the slide member 41 is fixed to the first frame 20 and the groove 72 of the second frame 20 extends in the third direction, the second frame 30 can move in the third direction but cannot move in the second direction.

[0577] Due to the interaction between the magnet 31 and the coil 230-1, the first frame 20 moves in the second direction, and the second frame 30 disposed on the first frame 20 can move in the second direction together with the second frame 20. Here, an attractive force acts between the sliding member 21 coupled to the second frame 30 and the magnet 130, so the bobbin 110 can also move in the second direction together with the second frame 30.

[0578] The interaction between the magnet 23 and the coil 230-2 allows the second frame 30 to move in the third direction. Here, an attractive force acts between the slide member 21 coupled to the second frame 30 and the magnet 130, so the bobbin 110 can also move in the third direction together with the second frame 30.

[0579] In summary, the interaction between the magnet 31 and the coil 230-1 allows the first and second frames 20, 30 and the bobbin 110 to move in the second direction. And the interaction between the magnet 23 and the coil 230-2 allows the first frame 20 to remain stationary and the second frame 30 and the bobbin 110 to move in the third direction. When the lens module 400 is coupled to the bobbin 110, the lens module 400 can also move together with the bobbin 110 in the second or third direction.

[0580] FIG. 26 shows the assembly procedure for the lens driving device 100 according to the embodiment.

[0581] 26, the slide member 42 is attached to the groove 45 of the housing 140 with an adhesive (S110). The coils 230, 120, position sensors 170, 240, and capacitor 195 are attached to the circuit board 190 with solder or a conductive adhesive (S120). Then, the circuit board 190 is attached to the housing 140 with an adhesive (S130).

[0582] The magnet 31 is bonded to the seating portion 3 of the first frame 20 by adhesive. The slide member 41 is bonded to the receiving portion 71 of the first frame 20 by adhesive (S140).

[0583] The first frame 20 is placed on the slide member 42 so that a portion of the slide member 42 is placed in the groove 72 of the first frame 20 (S150).

[0584] By using adhesive, the magnet 23 is bonded to the seating portion 25 of the second frame 30, the magnet 180 is bonded to the receiving portion 28 of the second frame 30, and the slide member 21 is bonded to the receiving portion 26 of the second frame 30 (S160).

[0585] The second frame 30 is placed on the slide member 41 and the first frame 20 so that a portion of the slide member 41 is placed in the groove 61 of the second frame 20 (S170).

[0586] The magnet 130 is bonded to the seating portion 102 of the bobbin 110 with an adhesive (S180). The bobbin 110 is placed in the opening 20A of the first frame 20 and the opening 30A of the second frame 30 so that the slide member 21 is inserted into the seating portion 105 of the bobbin 110 (S190). Next, the lower end of the cover member 300 is bonded to the step portion 14 of the housing 140 with an adhesive.

[0587] FIG. 27a shows the seat 105-1 and slide member 21 of the bobbin 110-1 according to another embodiment. Floor plan 27b is an enlarged view of the seats 105A1 and 105B1 in FIG. 27a, and FIG. 27c is a plan view of the seat 105-1 and slide member 21 of the bobbin 110-1 in FIG. 27a.

[0588] 27a to 27c, the seating portion 105-1 may include at least one protrusion (or projection) 69 protruding from an inner surface 68. The protrusion 69 may reduce the contact area with the sliding member 21, thereby reducing the frictional force between the bobbin 110-1 and the sliding member 21. Since the protrusion 69 reduces the frictional force between the bobbin 110-1 and the sliding member 21, this embodiment may reduce the electromagnetic force between the coil 120 and the magnet 130, which moves the bobbin 110-1 in the optical axis direction, thereby reducing the driving current for AF driving and reducing power consumption.

[0589] For example, the seat 105-1 may include a first side 68A and a second side 68B that are opposite each other, and a third side 68C that is located between the first side 68A and the second side 68B. For example, the first side 68A may contact the second surface 19B of the protrusion 118A of the bobbin 110.

[0590] For example, the protrusion 69 may be formed on the first side surface 68A, the second side surface 68B, and the third side surface 68C of the seating portion 105-1. For example, when viewed in the optical axis direction or from above, the protrusion 69 may be U-shaped or V-shaped.

[0591] In another embodiment, the protrusion 69 may be formed on at least one of the first side surface 68A, the second side surface 68B, and the third side surface 68C of the seating portion 105-1. In another embodiment, the protrusion 69 may include a plurality of protrusions spaced apart from one another. The shape of the protrusions may be hemispherical, dome-shaped, or polyhedral. In another embodiment, the protrusion 69 may be stripe-shaped.

[0592] 27b is also formed in the groove 72 of the first frame 20 or the groove 61 of the second frame 30, and the description of the protrusion 69 can be applied mutatis mutandis to this. The protrusion formed in the groove 72 of the first frame 20 or the groove 61 of the second frame 30 can reduce the frictional force between the slide members 42, 41 and the frames 20, 30. This embodiment can reduce the electromagnetic force between the coil 230 for moving the frame 10 and the magnets 31, 23, thereby reducing the driving current for driving the OIS and reducing power consumption.

[0593] 28 is a plan view of a bobbin 110-2, a second frame 30-1, and a slide member 21 according to another embodiment. The bobbin 110-2 may be a modified version of the bobbin 110 in FIG. 16a, and the second frame 30-1 may be a modified version of the second frame 30 in FIG.

[0594] 28, the bobbin 110-2 may include at least one groove 103A, 103B for disposing or accommodating at least a portion of the slide member 21. For example, the bobbin 110-2 may include a first groove 103A in which at least a portion of the first shaft member 21A is disposed, inserted, or accommodated, and a second groove 103B in which at least a portion of the second shaft member 21B is disposed, inserted, or accommodated. For example, the grooves 103A, 103B may be disposed on a first side 110A of the bobbin 110-2.

[0595] The second frame 30-1 may include a support portion 146 for fixing or supporting the slide member 21. The support portion 146 may be disposed in the housing portion 105 of the bobbin 110. The support portion 146 may be expressed interchangeably as a "fixing portion," a "protrusion," or a "projection." The support portion 146 may protrude from the inner surface (or inner face) of the side portion of the second frame 30-1.

[0596] For example, the second frame 30-1 may include a first support portion 146A arranged on the inner surface (or inner surface) of the third side portion 41C of the second frame 30-1, and a second support portion 146B arranged on the inner surface (or inner surface) of the fourth side portion 41D.

[0597] For example, the first support portion 146A may protrude in a direction toward the fourth side portion 41D of the second frame 30-1, and the second support portion 146B may protrude in a direction toward the third side portion 41C of the second frame 30-1.

[0598] The slide member 21 can be coupled or fixed to the support portion 146 of the second frame 30-1 by adhesive. For example, the first shaft member 21A can be coupled or fixed to the first support portion 146A of the second frame 30-1, and the second shaft member 21B can be coupled or fixed to the second support portion 146B of the second frame 30-1.

[0599] For example, the support portion 146 of the second frame 30-1 may include a groove for coupling with at least a portion of the slide member 21. At least another portion of the slide member 21 may protrude outside the groove of the support portion 146 of the second frame 30-1 and be disposed in the grooves 103A and 103B of the bobbin 110-2.

[0600] In the third direction (Y-axis direction), the coil 120 and the magnet 130-1 may correspond to, face each other, or overlap each other. For example, the sliding member 21 may be disposed between the magnet 130-1 and the support portion 146 of the second frame 30-1. The sliding member 21 may correspond to, face each other, or overlap each other with the magnet 130-1 in the third direction.

[0601] For example, in the third direction (eg, the Y-axis direction), the slide member 21 can face or overlap with the magnet 130-1.

[0602] For example, the first shaft member 21A may be disposed between one end (or first end) of the magnet 130-1 and the first support portion 146A. For example, the first shaft member 21A may correspond to, face to, or overlap with one end (or first end) of the magnet 130-1 in the third direction. For example, the first shaft member 21A may correspond to, face to, or overlap with the first support portion 146A of the second frame 30-1 in the third direction.

[0603] For example, the second shaft member 21B may be disposed between the other end (or second end) of the magnet 130-1 and the second support portion 146B. For example, the second shaft member 21B may correspond to, face to, or overlap with the other end (or second end) of the magnet 130-1 in the third direction. For example, the second shaft member 21B may correspond to, face to, or overlap with the second support portion 146B of the second frame 30-1 in the third direction.

[0604] In another embodiment, the lower portion or the lower end of the sliding member 21 may be coupled to the upper surface of the second frame 30-1. For example, the upper surface of the second frame 30-1 may be provided with a groove into which at least a portion of the sliding member 21, for example, the lower portion or the lower end, is inserted, positioned, or coupled.

[0605] This embodiment does not include a separate yoke that applies an attractive force to the magnet 130, but instead includes a slide member 21 made of a magnetic material. This allows the bobbin 110 to be tightly attached to the slide member 21 due to the attractive force acting between the magnet 130 and the slide member 21, thereby stably supporting the AF moving part and enabling stable AF drive.

[0606] Furthermore, by not providing a separate yoke that applies an attractive force to the magnets 31 and 23, but instead providing slide members 41 and 42 made of a magnetic material, the embodiment can bring the first frame 20 into close contact with the slide member 42 and the second frame 30 into close contact with the slide member 41 due to the attractive forces F1 and F2 acting between the magnet 42 and the slide member 42 and the attractive forces F5 and F6 acting between the magnet 23 and the slide member 41.

[0607] Furthermore, due to these attractive forces F1, F2, F5, and F6, the lower left, lower right, and upper right parts of the frame 10 are subjected to force toward the housing 140, so that the embodiment can stably bring the frame 10 into close contact with the housing 140, stably support the OIS moving part, and perform stable OIS operation.

[0608] Furthermore, in this embodiment, by disposing a separate magnet 180 on the fourth side 41D of the second frame 30, an attractive force F8 between the magnet 180 and the shaft member 41D of the sliding member 41 can be applied to the upper right side of the second frame 30, thereby allowing the upper right side of the second frame 30 to be closely attached to the first frame 20 (or housing 140). That is, by adding the magnet 180, in this embodiment, an attractive force between the magnets 31, 23, 180 and the sliding members 41, 42 can be applied to the four ends of the frame 10, thereby allowing the frame 10 to be more stably attached to the housing 140, stably supporting the OIS moving part, and stably driving the OIS.

[0609] In this embodiment, magnetic materials are used for the slide member 21 (or shaft member) for supporting the bobbin 110 for AF drive and the slide members 42, 41 for supporting the frame 10 for OIS drive, thereby eliminating the need for a separate yoke and reducing the size of the lens drive device and manufacturing costs.

[0610] In addition, by cutting off some of the corners on both ends of the magnet 130, the embodiment can reduce the space occupied by the magnet 130, thereby improving the space utilization of the lens driving device and achieving a compact lens driving device.

[0611] Furthermore, by having the cut surface of the magnet 130 face the slide member 21, the attractive force between the magnet 130 and the slide member 21 can be increased, and the supporting force for supporting the AF moving part, for example, the bobbin 110, can be increased.

[0612] By having the cut surfaces of the magnets 31, 23 face the slide members 42, 41, the attractive force between the magnets 31, 23 and the slide members 42, 41 can be increased, and the supporting force for supporting the OIS moving parts, for example, the first and second frames 20, 30, can be increased.

[0613] In addition, by forming a protrusion 69 having a step with respect to at least one of the upper surface of the bobbin 110 and the lower surface of the bobbin 110 within the groove 105 of the bobbin 110, the embodiment can reduce the friction force between the bobbin 110 and the slide member 21.

[0614] The corners of magnet 31 adjacent to slide member 42 are chamfered, and the corners of magnet 23 adjacent to slide member 41 are chamfered, thereby reducing magnetic field interference between magnet 31 and magnet 23. Therefore, this embodiment can prevent malfunction of the OIS caused by magnetic field interference between magnet 31 and magnet 23, and improve the reliability of OIS operation.

[0615] In addition, since the corners on both ends of the magnet 23 are removed in a chamfered form, this embodiment can reduce the space occupied by the magnet 23 and generate the maximum attractive force to the slide member 41.

[0616] The embodiment may have a structure in which three corners of the frame 10 receive force due to the attractive force between the shaft members 41, 42 and the magnets 31, 23, and are supported relative to the housing 140. In addition, the magnet 180 may be fixed to the second frame 30, and an additional force may be applied to one corner of the frame 10 due to the attractive force between the magnet 180 and the shaft member 41. As a result, four corner regions of the frame 10 may receive force, and the frame 10 may be more stably supported relative to the housing 140.

[0617] FIG. 29 is a cross-sectional view of a lens driving device according to another embodiment taken along a direction perpendicular to the optical axis.

[0618] The lens driving device of Figure 29 is a modified example of the lens driving device 100 shown in Figures 13 to 28, and the explanations regarding the lens driving device 100 of Figures 13 to 28 can be applied or mutatis mutandis applied, except as described below.

[0619] In the lens driving device shown in FIG. 29, the slide member 21-1 may be a non-magnetic material. The slide member 21-1 may be disposed between the bobbin 110 and the second frame 30-2. For example, the slide member 21-1 may be disposed between the outer surface (or outer peripheral surface) of the bobbin 110 and the inner surface (or inner peripheral surface) of the second frame 30-2. For example, at least a portion of the slide member 21-1 may be fixed to the second frame 30-2. At least a portion of the slide member 21-1 may be coupled, attached, or fixed between the inner surface (or inner peripheral surface) of the second frame 30-2. A lower portion or lower end of the slide member 21-1 may be coupled, attached, or fixed to the upper surface of the second frame 30-2.

[0620] For example, the second frame 30-2 may include a groove 44A into which at least a portion of the slide member 21-1 is inserted, positioned, or coupled. For example, the groove 44A may be disposed on the inner circumferential surface (or inner surface) of the second frame 30-2. At least a portion of the slide member 21-1 may be coupled, attached, or fixed to the groove 44A of the second frame 30-2 by, for example, an adhesive.

[0621] The bobbin 110-1 can be in contact with at least another part of the slide member 21-1. For example, at least another part of the slide member 21-1 can be in contact with the outer surface (or outer peripheral surface) of the bobbin 110-1.

[0622] For example, the bobbin 110-1 may include a groove 44B for inserting, positioning, or contacting at least another part of the slide member 21-1. For example, the groove 44B may be disposed on the outer surface (or outer peripheral surface) of the bobbin 110-1.

[0623] The slide member 21-1 can include a first slide member 21A1 and a second slide member 21B1.

[0624] For example, each of first slide member 21A1 and second slide member 21B1 may be made of a non-magnetic material that does not generate an attractive force to magnet 130.

[0625] 29 may include a separate yoke 95 that generates an attractive force by interacting with the magnet 130. The yoke 95 may be disposed on the second frame 30-2.

[0626] For example, the yoke 95 may include a first yoke 95A arranged in a first region of the second frame 30-1 that corresponds to, faces, or overlaps with the first slide member 21A1, and a second yoke 95B arranged in a second region of the second frame 30-1 that corresponds to, faces, or overlaps with the second slide member 21B1.

[0627] For example, in the direction from the first side 141A to the second side 141B of the housing 140, the yoke 95 may face or overlap the slide member 21-1.

[0628] For example, at least a portion of the yoke 95 may be arranged to correspond to, face, or overlap with the magnet 130. At least a portion of the yoke 95 may be arranged to correspond to, face, or overlap with the sliding member 21-1 in a direction different from the direction in which the magnet 130 and the yoke 95 face each other. For example, at least a portion of the yoke 95 may be arranged to correspond to, face, or overlap with the sliding member 21-1 in a direction from the third side 141C toward the fourth side 141D of the housing 140. In other embodiments, the yoke and the magnet may face or overlap each other in the direction in which the yoke and the sliding member face each other.

[0629] For example, the first yoke 95A and the second yoke 95B may be spaced apart from each other. For example, the magnet 130 may be disposed between the first yoke 95A and the second yoke 95B. In other embodiments, the first yoke 95A and the second yoke 95B may be coupled to each other.

[0630] The yoke 95 is a magnetic material and can support the bobbin 110 relative to the housing 140 so that the bobbin 110 can move in the optical axis direction due to the attractive force acting between the yoke 95 and the magnet 130. Furthermore, for example, the bobbin 110 can be pressed against the slide member 21 due to the attractive force acting between the yoke 95 and the magnet 130. Furthermore, for example, the bobbin 110 can maintain contact with the slide member 21 due to the attractive force acting between the yoke 95 and the magnet 130.

[0631] In another embodiment, the slide members 21 and 21-1 may be made of a magnetic material, and a separate yoke 95 may be further included as in the embodiment of FIG.

[0632] FIG. 30 shows another embodiment with a separate yoke for the OIS.

[0633] In the embodiment of Fig. 30, the slide members 41 and 42 are non-magnetic and may include separate yokes 96 and 97 for generating attractive forces to support the first frame 20 and the second frame 30. Fig. 30 is a modified example of the lens driving device 100 shown in Figs. 13 to 28, and the descriptions of the lens driving device 100 of Figs. 13 to 28 can be applied or mutatis mutandis, except as described below.

[0634] The yokes 96, 97 may be disposed in the housing 140. For example, the yokes 96, 97 may be disposed in a lower portion 145 of the housing 140. For example, the lower portion 145 of the housing 140 may be provided with receiving portions, e.g., grooves, for disposing, inserting, or coupling the yokes 96, 97 therein.

[0635] For example, at least a portion of the first yoke 96 may correspond to, face, or overlap with the magnet 31 arranged on the first frame 20 in the optical axis direction.

[0636] For example, the first yoke 96 may include a first yoke unit 96A that corresponds to, faces, or overlaps with the first magnet unit 31A in the optical axis direction, and a second yoke unit 96B that corresponds to, faces, or overlaps with the second magnet unit 31B.

[0637] For example, the second yoke 97 may correspond to, face, or overlap with the magnet 23 arranged on the second frame 30 in the optical axis direction.

[0638] The yokes 96, 97 may have shapes that correspond or match with the corresponding magnets 31, 23.

[0639] The first yoke 96 is a magnetic material, and an attractive force can be generated between the first yoke 96 and the magnet 31. The attractive force acting between the first yoke 96 and the magnet 31 can cause the first frame 20 to receive a force toward the housing 140. For example, the attractive force between the first yoke 96 and the magnet 31 can cause the first frame 20 to adhere closely to the housing 140.

[0640] The first frame 20 can be supported relative to the housing 140 so that the first frame 20 can move in the second direction due to the attractive force between the first yoke 96 and the magnet 31. Also, for example, the first frame 20 can be pressed against the slide member 42 due to the attractive force acting between the first yoke 96 and the magnet 31. Also, for example, the first frame 20 can maintain contact with the slide member 42 due to the attractive force acting between the first yoke 96 and the magnet 31.

[0641] The second yoke 97 is a magnetic material, and an attractive force can be generated between the second yoke 97 and the magnet 23. Due to the attractive force acting between the second yoke 97 and the magnet 23, the second frame 30 can receive a force toward the housing 140. For example, due to the attractive force between the second yoke 97 and the magnet 23, the second frame 30 can be tightly attached to the first frame 20.

[0642] The second frame 30 can be supported relative to the housing 140 so that the second frame 30 can move in the third direction due to the attractive force between the second yoke 97 and the magnet 23. Furthermore, for example, the second frame 30 can be pressed against the sliding member 41 due to the attractive force acting between the second yoke 97 and the magnet 23. Furthermore, for example, the second frame 30 can maintain contact with the sliding member 41 due to the attractive force acting between the second yoke 97 and the magnet 23.

[0643] 30, the embodiment may further include a yoke (not shown) disposed in the housing 140 and corresponding to, facing, or overlapping with the magnet 180 in the optical axis direction. Here, an attractive force may act between the magnet 180 and the additional yoke, thereby stably supporting the frames 20 and 30.

[0644] The description of the lens driving device 1100 in FIGS. 1 to 12 can be applied to the lens driving device 100 in FIG. 13 or can be applied mutatis mutandis.

[0645] Meanwhile, the lens driving device according to the above-described embodiment can be applied to various fields, for example, camera devices or optical devices.

[0646] Furthermore, the lens driving device 100 according to the embodiment may be included in an optical instrument that forms an image of an object in space using the properties of light, such as reflection, refraction, absorption, interference, and diffraction, and aims to enhance the visual acuity of the eye, record and reproduce an image using a lens, or perform optical measurement, image propagation, or transmission, etc. For example, the optical instrument according to the embodiment may be a mobile phone, a cellular phone, a smartphone, a portable smart device, a digital camera, a laptop computer, a digital terminal, a PDA (Personal Digital Assistant), a PMP (Portable Multimedia Player), a navigation system, etc., but is not limited thereto, and may be any device for taking images or photographs.

[0647] FIG. 31 shows an exploded perspective view of a camera device 200 according to an embodiment.

[0648] 31, a camera device 200 may include a lens or lens barrel 400, a lens driving device 100, an adhesive member 612, a filter 610, a first holder 600, a second holder 800, an image sensor 810, a motion sensor 820, a control unit 830, and a connector 840. The lens driving device 100 may be an embodiment according to FIGS.

[0649] A lens or lens barrel 400 may be attached to the bobbin 110 of the lens driver 100 .

[0650] The first holder 600 may be disposed below the base 210 of the lens driving device 100. The filter 610 is attached to the first holder 600, and the first holder 600 may include a protrusion 500 on which the filter 610 is seated.

[0651] The adhesive member 612 can bond or attach the base 210 of the lens driving device 100 to the first holder 600. For example, the adhesive member 612 can be an epoxy, a heat-curable adhesive, an ultraviolet-curable adhesive, or the like.

[0652] The filter 610 may serve to block light of a specific frequency band from passing through the lens barrel 400 from entering the image sensor 810. The filter 610 may be, but is not limited to, an infrared blocking filter. Here, the filter 610 may be arranged parallel to the xy plane.

[0653] An opening may be formed in the portion of the first holder 600 where the filter 610 is mounted so that light passing through the filter 610 can be incident on the image sensor 810 .

[0654] The second holder 800 is disposed below the first holder 600, and an image sensor 810 may be mounted on the second holder 600. The image sensor 810 is a portion where light passing through the filter 610 is incident and an image of the light is formed.

[0655] The second holder 800 may include various circuits, elements, control units, etc. to convert an image formed on the image sensor 810 into an electrical signal and transmit the signal to an external device. The second holder 800 may be implemented as a circuit board on which the image sensor is mounted, a circuit pattern is formed, and various elements are coupled.

[0656] The image sensor 810 can receive an image contained in light incident through the lens driving device 100 and convert the received image into an electrical signal.

[0657] The filter 610 and the image sensor 810 may be spaced apart and facing each other in a first direction.

[0658] The motion sensor 820 may be mounted on the second holder 800 and electrically connected to the control unit 830 via a circuit pattern provided on the second holder 800 .

[0659] The motion sensor 820 outputs rotational angular velocity information according to the movement of the camera device 200. The motion sensor 820 may be implemented by a two-axis or three-axis gyro sensor or an angular velocity sensor.

[0660] The control unit 830 is mounted on the second holder 800. The second holder 800 may be electrically connected to the lens driving device 100. For example, the second holder 800 may be electrically connected to the coil 120 of the lens driving device 100 and may provide a driving signal to the coil 120.

[0661] The connector 840 is electrically connected to the second holder 800 and may include a port for electrically connecting to an external device.

[0662] FIG. 32 is a perspective view of a terminal 200A according to an embodiment, and FIG. 33 is a configuration diagram of the terminal 200A shown in FIG.

[0663] Referring to Figures 32 and 33, the optical device 200A may include a body 850, a wireless communication unit 710, an A / V input unit 720, a sensing unit 740, an input / output unit 750, a memory unit 760, an interface unit 770, a control unit 780, and a power supply unit 790.

[0664] The body 850 shown in FIG. 32 has a bar shape, but is not limited to this and may have various structures such as a slide type, folder type, swing type, swivel type, etc., in which two or more sub-bodies are connected to be able to move relative to each other.

[0665] The body 850 may include a case (such as a casing, housing, or cover) that forms the exterior. For example, the body 850 may be divided into a front case 851 and a rear case 852. Various electronic components of the terminal may be housed in a space formed between the front case 851 and the rear case 852.

[0666] The wireless communication unit 710 may include one or more modules that enable wireless communication between the terminal 200A and a wireless communication system or between the terminal 200A and a network in which the terminal 200A is located. For example, the wireless communication unit 710 may include a broadcast receiving module 711, a mobile communication module 712, a wireless Internet module 713, a short-range communication module 714, and a location information module 715.

[0667] The A / v (Audio / video) input unit 720 is for inputting an audio signal or a video signal, and may include a camera 721, a microphone 722, and the like.

[0668] The camera 721 may include camera devices 1200, 200 according to the embodiment.

[0669] The sensing unit 740 can sense the current state of the terminal 200A, such as the open / closed state of the terminal 200A, the position of the terminal 200A, whether or not the user is touching the terminal 200A, the orientation of the terminal 200A, and the acceleration / deceleration of the terminal 200A, and can generate a sensing signal for controlling the operation of the terminal 200A. For example, if the terminal 200A is a slide phone, the sensing unit 740 can sense the open / closed state of the slide phone. The sensing unit 740 is also responsible for sensing functions related to the power supply state of the power supply unit 790, the connection state of the interface unit 770 with an external device, etc.

[0670] The input / output unit 750 generates input or output related to vision, hearing, touch, etc. The input / output unit 750 can generate input data for operational control of the terminal 200A and can display information processed by the terminal 200A.

[0671] The input / output unit 750 may include a keypad unit 730, a display module 751, an audio output module 752, and a touch screen panel 753. The keypad unit 730 may generate input data through input from the keypad.

[0672] The display module 751 may include a plurality of pixels that change color in response to an electrical signal. For example, the display module 751 may include at least one of a liquid crystal display, a thin film transistor-liquid crystal display, an organic light-emitting diode, a flexible display, and a 3D display.

[0673] The audio output module 752 can output audio data received from the wireless communication unit 710 in a call signal reception mode, a call mode, a recording mode, a voice recognition mode, or a broadcast reception mode, or can output audio data stored in the memory unit 760.

[0674] The touchscreen panel 753 can convert changes in capacitance caused by a user's touch on a particular area of ​​the touchscreen into electrical input signals.

[0675] The memory unit 760 can store programs for processing and controlling the control unit 780 and temporarily store input and output data (e.g., phonebook, messages, audio, still images, photos, videos, etc.) For example, the memory unit 760 can store images, such as photos or videos, captured by the camera 721.

[0676] The interface unit 770 serves as a passageway for connection with an external device connected to the terminal 200A. The interface unit 770 receives data or power from an external device and transmits it to each component inside the terminal 200A, or transmits data inside the terminal 200A to an external device. For example, the interface unit 770 may include a wired / wireless headset port, an external charger port, a wired / wireless data port, a memory card port, a port for connecting a device equipped with an identification module, an audio I / O (Input / Output) port, a video I / O (Input / Output) port, an earphone port, etc.

[0677] The controller 780 may control the overall operation of the terminal 200A, for example, the controller 780 may perform related control and processing for voice communication, data communication, video communication, and the like.

[0678] The control unit 780 may include a multimedia module 781 for playing multimedia. The multimedia module 781 may be implemented within the control unit 180 or may be implemented separately from the control unit 780.

[0679] The control unit 780 can perform pattern recognition processing to recognize handwritten or drawn inputs made on the touch screen as characters and images, respectively.

[0680] The power supply unit 790 receives an external power source or an internal power source under the control of the control unit 780, and can supply power necessary for the operation of each component.

[0681] The features, structures, effects, etc. described in the above embodiments are included in at least one embodiment of the present invention and are not necessarily limited to one embodiment. Furthermore, the features, structures, effects, etc. exemplified in each embodiment can be combined or modified in other embodiments by a person skilled in the art to which the embodiment belongs. Therefore, content related to such combinations and modifications should be interpreted as being included in the scope of the present invention. [Industrial Applicability]

[0682] The embodiment can reduce manufacturing costs and the space occupied by the yoke, thereby improving design freedom and enabling use in lens driving devices, camera devices, and optical equipment that can be reduced in size.

Claims

1. Housing and a bobbin disposed within the housing; a slide member disposed between the housing and the bobbin and fixed to the housing; a magnet disposed on the bobbin; a coil disposed in the housing and configured to move the bobbin in the optical axis direction by interacting with the magnet; The lens driving device, wherein the slide member is a magnetic body that exerts an attractive force on the magnet.

2. The lens driving device according to claim 1 , wherein the bobbin slides along the slide member in the optical axis direction.

3. The lens driving device according to claim 1 , wherein the housing includes a groove to which at least a portion of the slide member is fixed.

4. The lens driving device according to claim 1 , wherein the bobbin includes a groove into which at least another part of the slide member is inserted and disposed.

5. The lens driving device according to claim 1 , wherein the housing includes a groove into which a lower portion of the slide member is inserted and fixed.

6. The lens driving device according to claim 1 , wherein the housing includes a protrusion protruding from an inner surface of a side of the housing, and the slide member is fixed to the protrusion.

7. The lens driving device according to claim 1 , wherein at least a portion of the bobbin is disposed between the magnet and the sliding member.

8. 2. The lens driving device according to claim 1, wherein the sliding member overlaps the magnet in a direction perpendicular to the optical axis direction and in which the magnet and the coil face each other.

9. 9. The lens driving device according to claim 8, wherein the sliding member does not overlap the coil in a direction perpendicular to the optical axis direction and in which the magnet and the coil face each other.

10. 2. The lens driving device of claim 1, wherein the shortest distance between the slide member and the magnet is greater than half the length of the magnet in the direction perpendicular to the optical axis direction in which the magnet and the coil face each other and is less than three times the thickness of the magnet.

Images