Lens driving device, camera module, and optical apparatus

Abstract

A camera module includes a bobbin in which a through-hole is formed, a lens module accommodated in the through-hole and coupled to the bobbin, a protrusion formed to protrude from an outer circumferential surface of the lens module, and a recess formed to be recessed from an inner circumferential surface of the bobbin to accommodate at least a portion of the protrusion, wherein the recess includes a first guide portion extending downward from an upper end of the bobbin and a second guide portion extending from the first guide portion to be inclined.

Description

[0001] This case is a divisional application, the parent application being the application filed on July 7, 2016, with application number 202011474352.2, entitled "Lens Driving Device, Camera Module and Optical Device", and that parent application is a divisional application of the application filed on July 7, 2016, with application number 201680040334.9, entitled "Camera Module and Optical Device". Technical Field

[0002] The teachings of the present invention, based on exemplary and non-limiting embodiments, generally relate to camera modules and optical devices. Background Technology

[0003] With the widespread adoption of various mobile devices and the commercialization of wireless internet services, consumer demands related to mobile devices have diversified, leading to the development of various types of peripheral devices or add-on devices installed on mobile devices. In particular, camera modules can be representative items for capturing still images or videos of objects.

[0004] Traditional camera modules are manufactured with the lens drive unit and lens module manufactured separately. That is, the camera module is manufactured such that the lens drive unit is coupled to the lens module. In this case, the lens drive unit and lens module are coupled by adhesive. However, when an external force exceeding the adhesive strength is applied to a conventional camera module, the lens module suffers from the disadvantage of unfavorable displacement from the lens drive unit. Particularly during impact testing of the manufactured camera module, the lens module deforms unfavorably, resulting in resolution defects.

[0005] Furthermore, although the alignment between the lens module assembly assembled on the PCB (printed circuit board) and the PCB itself is not significantly affected, the recent trend towards miniaturization and higher quality requirements for camera modules means that alignment has a significant impact on the quality of traditional camera modules.

[0006] When the drooping (deflection) on both sides of the lens barrel assembly is uneven, the focal point of the lens barrel assembly will not be in focus (mismatch) with the focal point of the PCB, which will adversely affect the quality of the camera module. Summary of the Invention

[0007] Technical issues

[0008] To address the aforementioned problems / disadvantages, an exemplary embodiment of the present invention provides a camera module that has reliable protection against external vibrations through a locking structure between a lens module and a spool.

[0009] The objective of exemplary embodiments of the present invention is to provide a lens driving device and a camera module including the lens driving device, thereby preventing the lens barrel assembly and PCB from being out of focus when the drooping of the two sides of the lens barrel assembly is uneven, thus further improving the quality of the camera module.

[0010] Technical solution

[0011] In one general aspect of the invention, a camera module is provided, the camera module comprising: a spool having a through hole formed therein; a lens module received in the through hole and coupled to the spool; a protrusion formed to project from an outer peripheral surface of the lens module; and a recess formed to be recessed from an inner peripheral surface of the spool so that at least a portion of the receiving protrusion is accommodated, wherein the recess includes a first guide extending downward from an upper end of the spool and a second guide extending obliquely from the first guide.

[0012] Preferably, but not necessarily, the first guide portion may extend from the upper end of the spool in the direction of the optical axis, and the second guide portion may extend from the first guide portion in a direction perpendicular to the optical axis.

[0013] Preferably, but not necessarily, the protrusion may include a first protrusion and a second protrusion separately disposed on the outer peripheral surface of the lens module, wherein the first protrusion and the second protrusion may be based on optical axis symmetry.

[0014] Preferably, but not necessarily, the recess may include a first groove that receives at least a portion of the first protrusion and a second groove that receives at least a portion of the second protrusion.

[0015] Preferably, but not necessarily, the spool may be provided with an adhesive injection hole extending from the upper end of the spool to the second guide portion, wherein the adhesive injection hole may be spaced apart from the first guide portion.

[0016] Preferably, but not necessarily, the adhesive that bonds and secures the protrusion to the recess can be injected into the adhesive injection hole.

[0017] Preferably, but not necessarily, the adhesive can be an epoxy resin that is cured by either UV (ultraviolet light) or heat.

[0018] Preferably, but not necessarily, the length of the first guide portion in the optical axis direction can be greater than the length of the protrusion in the optical axis direction.

[0019] Preferably, but not necessarily, the length of the second guide portion in the direction perpendicular to the optical axis can be greater than the length of the protrusion in the direction perpendicular to the optical axis.

[0020] Preferably, but not necessarily, the protrusion can take the shape of a cube.

[0021] Preferably, but not necessarily, the protrusion can be spaced apart from the upper end of the spool.

[0022] Preferably, but not necessarily, the protrusion can be located on the upper surface of the tubing.

[0023] Preferably, but not necessarily, when the protrusion is accommodated in the second guide, the upper end of the spool can be positioned above the upper end of the lens module, and the lower end of the spool can be positioned below the lower end of the lens module.

[0024] Preferably, but not necessarily, the outer peripheral surface of the lens module can be spaced apart from the inner peripheral surface of the spool.

[0025] Preferably, but not necessarily, the protruding length of the protrusion can be greater than the separation distance between the lens module and the spool.

[0026] Preferably, but not necessarily, the camera module may further include: a housing that houses a spool inside the housing; a coil disposed on the spool; a magnet disposed in the housing to face the coil; and an elastic member coupled to the spool and the housing.

[0027] Preferably, but not necessarily, the camera module may also include: a base disposed on the lower side of the housing; a substrate disposed on the upper surface of the base; an FP coil portion disposed on the substrate to face the magnet; and a lateral support member coupled to the elastic member and the FP coil portion.

[0028] Preferably, but not necessarily, the camera module may also include: a first Hall sensor disposed on the substrate to detect the magnetic force of the magnet; and a second Hall sensor disposed on the cylinder to detect the magnetic force of the magnet, wherein the second Hall sensor may be electrically connected to the substrate via an elastic member and a lateral support member.

[0029] In another general aspect of the invention, a camera module according to a modified example of the invention is provided, the camera module comprising: a spool having a through hole formed therein; a lens module received in the through hole and coupled to the spool; a recess formed in the outer peripheral surface of the lens module; and a protrusion formed protruding from the inner peripheral surface of the spool; wherein the recess includes a first guide extending downward from the upper end of the lens module and a second guide extending obliquely from the first guide.

[0030] In another general aspect of the invention, an optical device is provided, comprising: a main body; a camera module disposed at the main body for capturing an image of an object; and a display unit disposed at the main body for outputting the image captured by the camera module; wherein the camera module may include: a spool having a through hole formed therein; a lens module received in the through hole and coupled to the spool; a recess formed on the outer peripheral surface of the lens module; and a protrusion formed protruding from the inner peripheral surface of the spool; wherein the recess includes a first guide extending downward from the upper end of the lens module and a second guide extending obliquely from the first guide.

[0031] In another general aspect of the invention, a camera module is provided, the camera module comprising: a lens module; a spool housing the lens module inside the spool; a spool housing the lens module inside the spool; a first coupling portion disposed on the outer peripheral surface of the lens module; and a second coupling portion disposed on the inner peripheral surface of the spool to allow the first coupling portion to move therein, wherein the second coupling portion may include a first guide portion extending downward from the upper end of the spool.

[0032] Preferably, but not necessarily, the second coupling portion may also include a second guide portion that extends at the lower end of the first guide portion at an angle to the first guide portion.

[0033] Preferably, but not necessarily, the first guide portion may extend from the upper end of the spool along the optical axis, wherein the angle formed by the first guide portion and the second guide portion may be a right angle.

[0034] Preferably, but not necessarily, the first coupling portion may include a protrusion extending from the outer peripheral surface of the lens module to the outside, and the second coupling portion may include a recess formed from the inner peripheral surface of the spool to the outside.

[0035] Preferably, but not necessarily, the protrusion may include a first lug and a second lug, each lug protruding from the outer peripheral surface of the lens module to the outside, wherein an imaginary line connecting the first lug and the second lug may pass through the center of the lens module.

[0036] Preferably, but not necessarily, the recess may include a first groove in which a first lug moves and a second groove in which a second lug moves, wherein the shape of the first groove may correspond to the shape of the second groove.

[0037] Preferably, but not necessarily, the spool may be provided with an adhesive injection hole extending from the upper end of the spool to the second guide portion, and adhesive may be injected into the second guide portion through the adhesive injection hole.

[0038] Preferably, but not necessarily, the adhesive may be an epoxy resin that is cured by UV rays or heat.

[0039] Preferably, but not necessarily, the length of the first coupling portion in the optical axis direction may be shorter than the length of the second guide portion in the optical axis direction.

[0040] Preferably, but not necessarily, the first coupling portion may include a first lug protruding in a cubic shape from the outer peripheral surface of the lens module.

[0041] Preferably, but not necessarily, the lens module can be cylindrical, and the spool can include through holes on the inside corresponding to the cylindrical shape of the lens module.

[0042] Preferably, but not necessarily, the first coupling portion may be located on the upper surface of the lens module.

[0043] Preferably, but not necessarily, when the first coupling part is located at the far end of the second coupling part, the upper end of the spool can be located on the upper side above the upper end of the lens module, and the lower end of the spool can be located on the lower side below the lower end of the lens module.

[0044] Preferably, but not necessarily, the outward protrusion length of the lug can be longer than the distance between the outer peripheral surface of the lens module and the inner peripheral surface of the spool.

[0045] In another exemplary embodiment of the present invention, a camera module is provided, the camera module comprising: a lens module; a spool for receiving the lens module inside the spool; a lug disposed on the outer peripheral surface of the lens module; a groove disposed on the inner peripheral surface of the spool; and an adhesive for fixing the lug to the groove.

[0046] In another exemplary embodiment of the present invention, an optical device is provided, the optical device comprising: a main body; a display portion disposed on a surface of the main body for displaying information; and a camera module disposed on the main body for capturing images or photographs, wherein the camera module comprises: a lens module; a spool for receiving the lens module inside the spool; a first coupling portion disposed on the outer peripheral surface of the lens module; and a second coupling portion disposed on the inner peripheral surface of the spool to allow the first coupling portion to move within the second coupling portion, wherein the second coupling portion may include a first guide portion extending downward from the upper end of the spool.

[0047] In another exemplary embodiment of the present invention, a lens driving device is provided, comprising: a spool, wherein at least one lens is disposed inside the spool and a first coil is disposed on its outer peripheral surface; a first magnet is disposed around the spool opposite to the first coil; a housing supports the first magnet; a first lens driving unit includes an upper elastic member and a lower elastic member coupled to the spool and the housing to move the spool along a first direction parallel to the optical axis by an interaction between the first magnet and the first coil; a base is arranged at a predetermined distance from the first lens driving unit; a plurality of support members movably support the housing in a second and third direction orthogonal to the first direction relative to the base; a second coil is disposed opposite to the first magnet; a second lens driving unit includes a circuit board disposed on a surface of the base by an adhesive member to move the housing along the second and third directions by an interaction between the first magnet and the second coil; a sensor holder is disposed on a surface of the base to support the base; and an epoxy resin is coated between the sensor holder and the base to support the base.

[0048] Preferably, but not necessarily, the sensor holder may include: a beveled portion disposed on the outer surface of the sensor holder; and an epoxy resin receiving portion disposed on one surface of the sensor holder to receive epoxy resin.

[0049] Preferably, but not necessarily, the beveled portion and the epoxy resin receptacle are spaced apart from the base by a predetermined distance.

[0050] Preferably, but not necessarily, the epoxy resin may include a first epoxy resin coated between the epoxy resin receiving portion and the base and a second epoxy resin coated between the bevel portion and the base.

[0051] Preferably, but not necessarily, the first epoxy resin and the second epoxy resin can be formed from the same components.

[0052] Preferably, but not necessarily, the first epoxy resin and the second epoxy resin can be formed from different components.

[0053] Preferably, but not necessarily, one surface of the epoxy resin accommodator may be recessed downwards.

[0054] Preferably, but not necessarily, one surface of the epoxy resin containment may include at least one step.

[0055] Preferably, but not necessarily, the epoxy resin receptacle may include a plurality of lug receptacles on one of its surfaces to be formed to project upwards to a predetermined height.

[0056] Preferably, but not necessarily, the epoxy resin receptacle may include a plurality of recessed receptacles on one of its surfaces to be formed for a predetermined recess height.

[0057] Preferably, but not necessarily, one surface of the bevel may be recessed, or may include at least one step.

[0058] Preferably, but not necessarily, the beveled portion may include a plurality of lug receptacles or recessed receptacles to protrude or recess toward its upper surface at a predetermined height.

[0059] In another general aspect of the invention, a camera module is provided, comprising: a spool having at least one lens disposed inside the spool and a first coil disposed on its outer peripheral surface; a first magnet disposed around the spool opposite to the first coil; a housing supporting the first magnet; upper and lower elastic members coupled to the spool and the housing; a first lens driving unit that moves the spool along a first direction parallel to the optical axis in response to an interaction between the first magnet and the first coil; a base arranged at a predetermined distance from the first lens driving unit; a plurality of support members that movably support the housing relative to the base in a second and a third direction orthogonal to the first direction; a second coil disposed opposite to the first magnet; a circuit board disposed on a surface of the base by an adhesive member; a second lens driving unit that moves the housing along the second and third directions in response to an interaction between the first magnet and the second coil; a sensor holder disposed on a surface of the base to support the base; and an epoxy resin coated between the sensor holder and the base to prevent the base from sagging; an image sensor; and a PCB (printed circuit board) on which the image sensor is mounted.

[0060] Preferably, but not necessarily, the sensor holder may include a beveled portion disposed on the outer peripheral surface of the sensor holder and an epoxy resin receiving portion disposed on one surface of the sensor holder to receive epoxy resin.

[0061] Preferably, but not necessarily, the epoxy resin may include a first epoxy resin coated between the epoxy resin receiving portion and the base and a second epoxy resin coated between the bevel portion and the base.

[0062] Preferably, but not necessarily, the epoxy resin receptacle may include a plurality of lug receptacles or recessed receptacles to protrude or recess into the upper surface of the beveled portion to a predetermined height.

[0063] Preferably, but not necessarily, one surface of the epoxy resin containment may be recessed or include at least one step.

[0064] Preferably, but not necessarily, the beveled portion may include multiple lug receptacles or recessed receptacles to protrude or recess into the upper surface of the beveled portion to a predetermined height.

[0065] Preferably, but not necessarily, one surface of the bevel may be recessed or include at least one step.

[0066] Preferably, but not necessarily, the first epoxy resin and the second epoxy resin can be formed from different components.

[0067] Beneficial effects

[0068] This invention can advantageously minimize the resolution defects caused by the movement of the lens module relative to the bobbin due to external impact.

[0069] The lens driving device and its camera module according to an exemplary embodiment of the present invention can have the following beneficial effects: it can prevent defocusing between the lens barrel assembly and the PCB caused by the sagging of both sides of the lens barrel assembly, thereby further improving the quality of the camera module. Attached Figure Description

[0070] Figure 1 This is a perspective view showing a lens driving unit according to an exemplary embodiment of the present invention;

[0071] Figure 2 This is an exploded perspective view showing a lens driving unit according to an exemplary embodiment of the present invention;

[0072] Figure 3 This is a cross-sectional view showing the coupling state between the lens module and the cable drum in a camera module according to an exemplary embodiment of the present invention;

[0073] Figure 4 This is a perspective view showing the lens module of a camera module according to an exemplary embodiment of the present invention;

[0074] Figure 5 This is a perspective view showing the cable spool of a camera module according to an exemplary embodiment of the present invention;

[0075] Figure 6 This is a schematic exploded perspective view illustrating a camera module according to an exemplary embodiment of the present invention;

[0076] Figure 7(a) and 7(b) This is a schematic diagram showing the assembly state of the lens barrel assembly, sensor bracket, and substrate according to an exemplary embodiment of the present invention;

[0077] Figure 8(a) is a schematic diagram of a camera module before the formation of the second epoxy resin according to an exemplary embodiment of the present invention, and Figure 8(b) is a schematic diagram of a camera module after the formation of the second epoxy resin according to an exemplary embodiment of the present invention.

[0078] Figure 9 This is a schematic diagram illustrating a sensor bracket of a lens driving device according to an exemplary embodiment of the present invention;

[0079] Figures 10(a) to 10(d) This is a schematic diagram illustrating various exemplary embodiments of the epoxy resin housing of the sensor bracket in a lens driving device according to an exemplary embodiment of the present invention;

[0080] Figure 11 This is a schematic perspective view illustrating a lens driving device according to an exemplary embodiment of the present invention;

[0081] Figure 12 This is an exploded perspective view showing a lens driving device according to an exemplary embodiment of the present invention;

[0082] Figure 13 This is a schematic diagram illustrating the base, PCB, and second coil according to an exemplary embodiment of the present invention;

[0083] Figure 14 This is a schematic diagram showing the second coil, circuit board, and base on a lens driving device according to an exemplary embodiment of the present invention. Detailed Implementation

[0084] Some exemplary embodiments of the invention will be described with reference to the accompanying drawings. For the sake of brevity and clarity, detailed descriptions of well-known functions, configurations, or constructions have been omitted to avoid obscuring the description of this disclosure with unnecessary detail. Furthermore, throughout the description, the same reference numerals are assigned to the same elements in the description of the drawings.

[0085] Furthermore, the terms “first,” “second,” “A,” “B,” (a), (b), etc., used herein do not indicate any order, quantity, or importance, but are used to distinguish the elements from each other. In the following description and / or claims, the terms coupling and / or connection, and their derivatives, may be used. In certain embodiments, connection may be used to indicate that two or more elements are in direct physical and / or electrical contact with each other. “Coupling” may mean that two or more elements are in direct physical and / or electrical contact. However, coupling may also mean that two or more elements may not be in direct contact with each other, but can still cooperate and / or interact with each other. For example, “coupling,” “joining,” and “connection” may indicate that two or more elements are not in contact with each other, but are indirectly connected together through another element or an intermediate element.

[0086] The term “optical axis direction” as used below is defined as the optical axis direction of the lens module 1020 when it is coupled to the lens drive unit.

[0087] In the following text, "autofocus function" is defined as: the function of adjusting the distance to the image sensor by moving the lens module along the optical axis in response to the distance to the object, thereby matching the focus relative to the object in order to obtain a sharp image of the object on the image sensor. "Autofocus" can be used interchangeably with "AF".

[0088] The “shake correction function” used below is defined as: the function of moving or tilting the lens module in a direction perpendicular to the optical axis to counteract vibrations (movements) caused by external forces on the image sensor. Furthermore, “shake correction” can be used interchangeably with “OIS (Optical Image Stabilization)”.

[0089] The configuration of an optical device according to an exemplary embodiment of the present invention will now be described below.

[0090] The optical device according to exemplary embodiments of the present invention can be a mobile phone, a smartphone, a portable smart device, a digital camera, a laptop computer, a PMP (portable multimedia player), and a navigation device. However, the present invention is not limited thereto and may include any device capable of capturing images or photographs.

[0091] An optical device according to an exemplary embodiment of the present invention may include a main body (not shown), a camera module disposed on the main body for capturing images of an object, and a display unit (not shown) disposed on the main body for outputting images captured by the camera module.

[0092] The configuration of an optical device according to an exemplary embodiment of the present invention will be described below.

[0093] The camera module may further include a lens drive unit 1000, a lens module 1020, an infrared cutoff filter (not shown), a PCB (not shown), an image sensor (not shown), and a controller (not shown).

[0094] Lens module 1020 may include one or more lenses (not shown) and a lens barrel housing the one or more lenses. However, an element in lens module 1020 is not limited to a lens module; any support structure capable of supporting one or more lenses is sufficient. Lens module 1020 can be coupled to lens drive unit 1000 and move together with lens drive unit 1000. For example, lens module 1020 can be coupled to the inside of lens drive unit 1000. Meanwhile, light that has passed through lens module 1020 can illuminate image sensor. Lens module 1020 may be cylindrical, and the tube 1210 may include a lens coupling portion 1211 on its inside, which is a through hole corresponding to the cylindrical shape of lens module 1020.

[0095] An infrared cutoff filter (not shown) can be used to prevent infrared light from entering the image sensor. For example, the infrared cutoff filter can be inserted between the lens module 1020 and the image sensor. The infrared cutoff filter can be mounted on a base (1500, described later) and can be coupled to a support member (not shown). The infrared cutoff filter can be mounted in a hollow hole 1510 formed at the center of the base 1500. For example, the infrared cutoff filter can be formed of a film material or a glass material. Alternatively, for example, the infrared cutoff filter can be formed by allowing an infrared-cutting coating material to be applied to an optical filter such as an imaging plane protective cover glass or a protective glass.

[0096] The PCB can support the lens driving unit 1000. An image sensor can be mounted on the PCB. For example, the lens driving unit 1000 can be disposed on the upper surface of the PCB, and the image sensor can be disposed on the upper inner side of the PCB. Furthermore, the upper outer side of the PCB can be coupled via a sensor bracket (not shown), and the sensor bracket can be coupled to the lens driving unit 1000 thereon. With this structure, light already passed through the lens module 1020 housed inside the lens driving unit 1000 can illuminate the image sensor mounted on the PCB. The PCB can supply power to the lens driving unit 1000.

[0097] Meanwhile, the PCB can be equipped with a controller to control the lens drive unit 1000.

[0098] The image sensor can be mounted on a PCB. The image sensor can be configured to align with the lens module 1020 about its optical axis, allowing the image sensor to capture the light that has passed through the lens module 1020. The image sensor can output an image from the illuminated light. For example, the image sensor can be a CCD (Charge-Coupled Device), MOS (Metal-Oxide-Semiconductor), CPD, or CID. However, the type of image sensor is not limited to these.

[0099] The controller can be mounted on a PCB. The controller can be located outside the lens drive unit 1000. However, the controller can also be located inside the lens drive unit 1000. The controller can control the direction, intensity, and amplitude of the current supplied to each element of the lens drive unit 1000. The controller can perform either the autofocus function or the image stabilization function of the camera module by controlling the lens drive unit 1000. That is, the controller can move the lens module 1020 along the optical axis or tilt the lens module 1020 in a direction orthogonal to the optical axis by controlling the lens drive unit 1000. Furthermore, the controller can perform feedback control for both the autofocus function and the image stabilization function. More specifically, the controller can control the power or current applied to the first drive unit 1220 and / or the third drive unit 1420 by receiving the position of the second drive unit 1320 detected by the sensor unit 1700.

[0100] The structure of the lens driving unit will be described in detail below with reference to the accompanying drawings.

[0101] Figure 1 This is a perspective view showing a lens driving unit according to an exemplary embodiment of the present invention; Figure 2 This is an exploded perspective view showing a lens driving unit according to an exemplary embodiment of the present invention; Figure 3 This is a cross-sectional view showing the coupling state between the lens module and the cable drum in a camera module according to an exemplary embodiment of the present invention; Figure 4 This is a perspective view showing the lens module of a camera module according to an exemplary embodiment of the present invention; and Figure 5 This is a perspective view showing the spool of a camera module according to an exemplary embodiment of the present invention.

[0102] Reference Figures 1 to 5 The lens driving unit 1000 according to an exemplary embodiment of the present invention may include a cover member 1100, a first mover 1200, a second mover 1300, a stator 1400, a base 1500, a support member 1600, and a sensor section 1700. However, the lens driving module 1000 according to an exemplary embodiment of the present invention may omit any one of the cover member 1100, the first mover 1200, the second mover 1300, the stator 1400, the base 1500, the support member 1600, and the sensor section 1700. In particular, the sensor section 1700 may be omitted as an element for autofocus feedback function and / or hand shake correction feedback function.

[0103] The cover member 1100 can form the appearance of the lens drive unit 1000. The cover member 1100 can have a cubic shape with an open bottom. However, the invention is not limited thereto. The cover member 1100 may include an upper surface 1101 and a side surface 1102 extending downward from the outer side of the upper surface 1101. At the same time, the lower end of the side surface 1102 at the cover member 1100 can be mounted to the base 1500. The internal space formed by the cover member 1100 and the base 1500 can be provided with a first mover 1200, a second mover 1300, a stator 1400, and a support member 1600. In addition, the cover member 1100 can be mounted to the base 1500 by being partially or completely bonded to the side surface of the base (1500, described later) through its inner side, so that the cover member 1100 can have the function of protecting the internal components from external impacts and preventing foreign objects from entering the cover member.

[0104] For example, the cover member 1100 may be formed of a metallic material. More specifically, the cover member 1100 may be equipped with a metal plate. In this case, the cover member 1100 can prevent radio interference. That is, the cover member 1100 can prevent radio waves generated from the outside of the lens driving unit 1000 from entering the interior of the cover member 1100. Furthermore, the cover member 1100 can prevent radio waves generated from the interior of the cover member 1100 from being emitted to the outside of the cover member 1100. However, the material of the cover member 1100 is not limited to this.

[0105] The cover member 1100 may include an opening 1110 that exposes the lens module 1020 by being formed on the upper surface 1101. The shape of the opening 1110 may be formed to correspond to the shape of the lens module 1020. The size of the opening 1110 may be formed to be larger than the diameter of the lens module 1020 to allow the lens module 1020 to be assembled through the opening 1110. Furthermore, light introduced through the opening 1110 can pass through the lens module 1020. Simultaneously, the light that has passed through the lens module 1020 can be transmitted to the image sensor.

[0106] The first mover 1200 may include a spool 1210 and a first drive unit 1220. The first mover 1200 may be coupled to a lens module 1020, which is a component of the camera module (however, the lens module 1020 can be interpreted as a component of the lens drive unit 1000). That is, the lens module 1020 may be disposed inside the first mover 1200. In other words, the inner peripheral surface of the first mover 1200 may be coupled to the outer peripheral surface of the lens module 1020. Simultaneously, the first mover moves integrally with the lens module 1020 through interaction with the second mover 1300. That is, the first mover 1200 can move the lens module 1020.

[0107] The first mover 1200 may include a drum 1210. Furthermore, the first mover 1200 may include a first drive unit 1220 coupled to the drum 1210.

[0108] The spool 1210 can be coupled to the lens module 1020. More specifically, the inner peripheral surface of the spool 1210 can be coupled to the outer peripheral surface of the lens module 1020. Simultaneously, the spool 1210 can be coupled to the first drive unit 1220. Furthermore, the lower surface of the spool 1210 can be coupled to the lower support member 1620, and the upper surface of the spool 1210 can be coupled to the upper support member 1610. The spool 1210 can be disposed inside the housing 1310. The spool 1210 is movable relative to the housing 1310 along the optical axis. The spool 1210 may include a lens coupling portion 1211 formed therein. The lens coupling portion 1211 can be coupled to the lens module 1020.

[0109] The spool 1210 may include a first drive coupling portion 1212 on which a first drive portion 1220 is wound or mounted. The first drive coupling portion 1212 may be integrally formed with the outer surface of the spool 1210. Furthermore, the first drive coupling portion 1212 may be continuously formed together with the outer surface of the spool 1210 or spaced apart by a predetermined distance. The first drive coupling portion 1212 may include a recess formed by recessing a portion of the outer surface of the spool 1210. The first drive coupling portion 1212 may be provided with the first drive portion 1220, and the first drive portion provided at the first drive coupling portion 1212 may be supported by the first drive coupling portion 1212.

[0110] The spool 1210 may include an upper coupling portion 1213 coupled to the upper support member 1610. The upper coupling portion 1213 may be coupled to the inner portion 1612 of the upper support member 1610. For example, a lug (not shown) of the upper coupling portion 1213 may be coupled by inserting into a groove or hole (not shown) at the inner portion 1612. Simultaneously, these elements may be coupled by allowing a lug to be provided at the upper support member 1610 and by allowing a groove or hole to be provided on the spool 1210. The spool 1210 may also include a lower coupling portion (not shown) coupled to the lower support member 1620. The lower coupling portion formed at the bottom of the spool 1210 may be coupled to the inner portion 1620 of the lower support member 1620. For example, a lug (not shown) at the lower coupling portion may be coupled by inserting into a groove or hole (not shown) at the inner portion 1622. Meanwhile, these components can be coupled by allowing lugs to be provided at the lower support member 1620 and by allowing grooves or holes to be provided on the tubing 1210.

[0111] The first drive unit 1220 can be configured to face the second drive unit 1320 of the second mover 1300. The first drive unit 1220 can move the spool 1210 relative to the housing 1310 through electromagnetic interaction with the second drive unit 1320. The first drive unit 1220 may include a coil. The coil can be guided to the first drive coupling unit 1212 to wind around the outer surface of the spool 1210. Furthermore, in another exemplary embodiment, the coil can be arranged on the outer surface of the spool 1210 by allowing four coils to be independently arranged such that 90° is formed between adjacent coils. When the first drive unit 1220 includes a coil, power supplied to the coil can be supplied through the lower support member 1620. In this case, the lower support member 1620 can be divided into a pair to supply power to the coil. At the same time, the first drive unit 1220 may include a pair of lead cables for supplying power. In this case, each of the pair of lead cables on the first drive unit 1220 can be electrically coupled to each of the pair of lower support members 1620. Meanwhile, when power is supplied to the coil, an electromagnetic field may be generated around the coil. Furthermore, in another exemplary embodiment, the first drive unit 1220 may include a magnet. In this case, the second drive unit 1320 may be provided with a coil.

[0112] The second mover 1300 can be disposed outside the first mover 1200 and opposite to the first mover 1200. The second mover 1300 can be supported by a base 1500 disposed below it. The second mover 1300 can be disposed in the inner space of the cover member 1100.

[0113] The second mover 1300 may include a housing 1310 disposed on the outside of the line cylinder 1210. In addition, the second mover 1300 may include a second drive unit 1320, which is fixed to the housing 1310 by being disposed opposite to the first drive unit 1220.

[0114] The housing 1310 may be formed in a shape corresponding to the inner surface of the cover member 1100 that forms the appearance of the lens drive unit 1000, but may be formed in any shape that can be disposed inside the cover member 1100. At least a portion of the housing 1310 may be formed in a shape corresponding to the upper surface of the cover member 1100. At least a portion of the housing 1310 may be formed in a shape corresponding to the side surface of the cover member 1100. For example, the housing 1310 may be a cubic shape including four side surfaces. However, the shape of the housing 1310 is not limited to this.

[0115] The housing 1310 can be formed of an insulating material, and considering productivity, the housing 1310 can be formed as an injection-molded article. The housing 1310 is the part that moves for OIS drive and can be arranged to be spaced a predetermined distance from the cover member 1100. However, the housing 1310 can be fixed to the base 1500 in the AF mode. Alternatively, in the AF mode, the housing 1310 can be omitted, and the magnet formed by the second drive part 1320 can be fixed to the cover member 1100.

[0116] The housing 1310 is open on both the upper and lower sides to movably accommodate the first mover 1200 in the vertical direction. The housing 1310 may include an upper / lower open internal space 1311 on its inner side. The first mover 1200 may be movably disposed in the internal space 1311. That is, the internal space 1311 may be formed in a shape corresponding to the shape of the first mover 1200. Furthermore, the outer peripheral surface of the internal space 1311 may be spaced apart from the outer peripheral surface of the first mover 1200.

[0117] The housing 1310 may include a second drive unit coupling portion 1312 on its side, which accommodates the second drive unit 1320 by being formed in a shape corresponding to the shape of the second drive unit 1320. That is, the second drive unit coupling portion 1312 can fix the second drive unit 1320 by accommodating it. The second drive unit 1320 can be fixed to the second drive unit coupling portion 1312 by an adhesive (not shown). Simultaneously, the second drive unit coupling portion 1312 may be provided on the inner circumferential surface of the housing 1310. In this case, the electromagnetic interaction with the first drive unit 1220 provided inside the second drive unit has an advantageous strength. Furthermore, for example, the second drive unit coupling portion 1312 may have a bottom-open shape. In this case, the electromagnetic interaction between the third drive unit 1420 provided below the second drive unit 1320 and the second drive unit 1320 has an advantageous strength. For example, the second drive unit coupling portion 1312 may be formed in four pieces. Each second drive coupling part 1312 can be coupled through each of the second drive parts 1320.

[0118] The housing 1310 may be coupled to the upper support member 1610 at its upper surface and to the lower support member 1620 at its bottom surface. The housing 1310 may include an upper coupling portion 1313 coupled to the upper support member 1610. The upper coupling portion 1313 may be coupled to the outer side portion 1611 of the upper support member 1610. For example, the upper coupling portion 1313 formed in a lug may be coupled to a groove or hole in the outer side portion 1611 by insertion into such a groove or hole. In another exemplary embodiment, the upper support member 1610 may have a lug, and the housing 1310 may have a groove or hole, and the lug may be coupled to such a groove or hole. The spool 1310 may also include a lower coupling portion (not shown) coupled to the lower support member 1620. The lower coupling portion formed on the bottom surface of the housing 1310 may be coupled to the outer side 1621 of the lower support member 1620. For example, the lower coupling portion formed in the lug can be coupled and inserted into the groove or hole of the outer 1621.

[0119] The second drive unit 1320 can be configured to face the first drive unit 1220 of the first mover 1200. The second drive unit 1320 can move the first drive unit 1220 through electromagnetic interaction with it. The second drive unit 1320 may include a magnet. The magnet may be fixed to the second drive coupling part 1312 of the housing 1310. For example, as Figure 4 As shown, the second drive unit 1320 can be disposed at the housing 1310 in such a manner that four magnets are independently disposed, and two adjacent magnets form a 90° right angle. That is, the second drive unit 1320 promotes efficient utilization of the internal space by being mounted on the four sides of the housing 1310 at predetermined intervals. Furthermore, the second drive unit 1320 can be attached to the housing 1310, but the invention is not limited thereto. Meanwhile, the first drive unit 1220 may include magnets, and the second drive unit 1320 may include coils.

[0120] The stator 1400 can be positioned opposite the lower side of the second mover 1300. Simultaneously, the stator 1400 can move the second mover 1300. Furthermore, the stator 1400 can have through holes 1411 and 421 in its center, corresponding to the lens module 1020.

[0121] The stator 1400 may include a circuit board 1410 inserted between the third drive section 1420 and the base section 1500. In addition, the stator 1400 may include a third drive section 1420 disposed opposite to the lower side of the second drive section 1320.

[0122] The circuit board 1410 may be a flexible circuit board of an FPCB (Flexible Printed Circuit Board). The circuit board 1410 can be inserted between the third drive unit 1420 and the base 1500. Simultaneously, the circuit board 1410 can supply power to the third drive unit 1420. Furthermore, the circuit board 1410 can supply power to the first drive unit 1220 via the lateral support member 1630, the upper support member 1610, the conductive member 1640, and the lower support member 1620. The circuit board 1410 may be provided with a through-hole 1411 to allow light that has passed through the lens module 1020 to pass through. Additionally, the circuit board 1410 may include a terminal portion 1412 exposed to the outside by bending. The terminal portion 1412 can be connected to an external power source, through which power can be supplied to the circuit board 1410.

[0123] The third drive unit 1420 may include a coil. When power is applied to the coil of the third drive unit 1420, the second drive unit 1320 and the housing 1310 fixed by the second drive unit 1320 can move integrally through interaction with the second drive unit 1320. The third drive unit 1420 may be mounted on or electrically connected to the circuit board 1410. Simultaneously, the third drive unit 1420 may have a through-hole 1421 to allow light from the lens module 1020 to pass through. Furthermore, considering the miniaturization of the lens drive unit 1000 (reduction in height relative to the z-axis direction, which is the optical axis), the third drive unit 1420 may be formed with an FP (fine patterned) coil for arrangement or mounting on the circuit board 1410. The third drive unit 1420 may be an FP coil portion. The third drive unit 1420 may be formed from an FP coil patterned on a substrate.

[0124] The base 1500 can support the second mover 1300. A PCB can be disposed on the lower side of the base 1500. The base 1500 may include a through hole 1510 formed at a position corresponding to the lens coupling portion 1211 of the coil 1210. The base 1500 can perform the function of a sensor holder protecting the image sensor. At the same time, the base 1500 may be provided with an infrared filter. The through hole 1510 of the base 1500 can be coupled to the infrared filter. Alternatively, the infrared filter can be coupled to a separate sensor holder disposed on the lower surface of the base 1500.

[0125] For example, the base 1500 may include a foreign matter collection section 1520 for collecting foreign objects introduced into the cover member 1100. The foreign matter collection section 1520 may be located on the upper surface of the base 1500 and includes an adhesive material to collect the foreign objects into the internal space formed by the cover member 1100 and the base 1500. The base 1500 may include a sensor mounting section 1530 coupled to the second sensor section 1720. That is, the second sensor section 1720 may be mounted on the sensor mounting section 1530. In this case, the second sensor section 1720 can detect the second drive section 1320 coupled to the housing 1310 to detect the horizontal movement of the housing 1310. For example, the sensor mounting section 1530 may have two parts. Each of the two sensor mounting sections 1530 may have a second sensor section 1720. In this case, the second sensor section 1720 may be configured to detect all movements along the x and y axes at the housing.

[0126] The support member 1600 may connect any two or more of the first mover 1200, the second mover 1300, and the base 1500. The support member 1600 may be elastically connected to any two or more of the first mover 1200, the second mover 1300, and the base 1500 to allow relative movement at each element. That is, the support member 1600 may be formed of an elastic member. For example, the support member 1600 may include an upper support member 1610, a lower support member 1620, a lateral support member 1630, and a conductive member 1640. However, the conductive member 1640 is configured to electrically connect the upper support member 1610 and the lower support member 1620, and can be distinguished from the upper support member 1610, the lower support member 1620, and the lateral support member 1630.

[0127] For example, the upper support member 1610 may include an outer portion 1611, an inner portion 1612, and a coupling portion 1613. The upper support member 1610 may include an outer portion 1611 coupled to the housing 1310, an inner portion 1612 coupled to the spool 1210, and a coupling portion 1613 that elastically connects the outer portion 1611 and the inner portion 1612.

[0128] The upper support member 1610 can be connected to the upper surface of the first mover 1200 and the upper surface of the second mover 1300. More specifically, the upper support member 1610 can be coupled to the upper surface of the spool 1210 and the upper surface of the housing 1310. The interior of the upper support member 1610 can be coupled to the upper coupling portion 1213 of the spool 1210, and the exterior 1611 of the upper support member 1610 can be coupled to the upper coupling portion 1313 of the housing 1310.

[0129] For example, the upper support members 1610 can be arranged in six parts. In this case, two of the six upper support members 1610 can be electrically connected to the lower support members 1620 to apply power to the first drive unit 1220. Each of the two upper support members 1610 can be electrically connected to each of a pair of lower support members 1620a and 1620b via a conductive member 1640. Meanwhile, the remaining four upper support members 1610 can be used to supply power to the second sensor unit 1720 and to send / receive information or signals between the controller and the second sensor unit 1720. Alternatively, as a variation, two of the six upper support members 1610 can be directly connected to the first drive unit 1220, and the remaining four upper support members can be connected to the second sensor unit 1720.

[0130] For example, the lower support member 1620 may include a pair of lower support members 1620a and 1620b. That is, the lower support member 1620 may include a first lower support member 1620a and a second lower support member 1620b. Each of the first lower support member 1620a and the second lower support member 1620b can be powered by a pair of lead cables respectively connected to a first drive unit 1220 on which a coil is formed. Simultaneously, the pair of lower support members 1620 can be electrically connected to a circuit board. With this configuration, the pair of lower support members 1620 can provide power supplied from the circuit board to the first drive unit 1220.

[0131] For example, the lower support member 1620 may include an outer portion 1621, an inner portion 1622, and a coupling portion 1623. The lower support member 1620 may include an outer portion 1621 coupled to the housing 1310, an inner portion 1622 coupled to the spool 1210, and a coupling portion 1623 that elastically connects the outer portion 1621 and the inner portion 1622.

[0132] The lower support member 1620 can be connected to the lower surface of the first mover 1200 and the lower surface of the second mover 1300. More specifically, the lower support member 1620 can be coupled to the lower surface of the spool 1210 and the lower surface of the housing 1310. The interior 1622 of the lower support member 1620 can be coupled to the lower coupling portion of the spool 1210, and the exterior 1621 of the lower support member 1620 can be coupled to the lower coupling portion of the housing 1310.

[0133] One end of the lateral support member 1630 may be fixed to the stator 1400 or the base 1500, and the other end may be coupled to the upper support member 1610 or the second mover 1300. For example, one end of the lateral support member 1630 may be coupled to the base 1500, and the other end may be coupled to the second mover 1300. In another exemplary embodiment, one end of the lateral support member 1630 may be coupled to the stator 1400, and the other end may be coupled to the upper support member 1610, thereby allowing the lateral support member 1630 to elastically support the second mover 1300 to allow the second mover 1300 to move horizontally or tilt.

[0134] For example, the number of lateral support members 1630 can be the same as the number of upper support members 1610. That is, there can be six lateral support members 1630, each connected to one of the six upper support members 1610. In this case, each upper support member 1610 can be supplied with power from the stator 1400 or from an external source. For example, the number of lateral support members 1630 can be determined by considering symmetry. For example, there can be a total of eight lateral support members 1630, two at each corner of the housing 1310.

[0135] For example, the lateral support member 1630 or the upper support member 1610 may include a structure for vibration damping. The vibration damping structure may be formed on at least one of the lateral support member 1630 and the upper support member 1610. The vibration damping structure may be a separate component, such as a vibration damper. Furthermore, the vibration damping structure can be achieved by changing the shape of any portion of the lateral support member 1630 and the upper support member 1610.

[0136] The conductive member 1640 can electrically connect the upper support member 1610 and the lower support member 1620. The conductive member 1640 is formed separably from the transverse support member 1630. The power supplied to the upper support member 1610 through the conductive member 1640 can be supplied to the lower support member 1620, and can also be supplied to the first drive unit 1220 through the lower support member 1620. Alternatively, when the upper support member 1610 is directly connected to the first drive unit 1220, the conductive member 1640 can be omitted.

[0137] Sensor unit 1700 can be used for at least one of AF feedback and OIS feedback. That is, sensor unit 1700 can detect the position or movement of at least one of the first mover 1200 and the second mover 1300. For example, sensor unit 1700 may include a first sensor unit 1710 and a second sensor unit 1720. The first sensor unit 1710 can provide information for AF feedback by sensing the relative vertical movement of the spool 1210 relative to the housing 1310. The second sensor unit 1720 can provide information for OIS feedback by detecting the horizontal movement and tilt of the second mover 1300.

[0138] The first sensor section 1710 may be disposed at the first mover 1200. The first sensor section 1710 may be disposed at the wire cylinder 1210. The first sensor section 1710 may be fixed by inserting into the first drive coupling section 1212 formed on the outer peripheral surface of the wire cylinder 1210. The first sensor section 1710 may include a first sensor 1711, a flexible PCB 1712, and a terminal section 1713.

[0139] The first sensor 1711 can detect the movement or position of the spool 1210. Alternatively, the first sensor 1711 can detect the position of the second drive unit 1320 mounted on the housing 1310. For example, the first sensor 1711 can be a Hall sensor. The first sensor 1711 can detect changes in the relative position between the spool 1210 and the housing 1310 by detecting the magnetic force generated from the second drive unit 1320.

[0140] The flexible PCB 1712 may be fitted with a first sensor 1711. For example, the flexible PCB 1712 may be formed in a strip shape. At least a portion of the flexible printed circuit board 1712 may be inserted into a sensor guide groove (not shown) by being formed in a shape corresponding to the shape of the sensor guide groove formed as a recess on the upper surface of the tube 1210. For example, the flexible PCB 1712 may be an FPCB. That is, the flexible PCB 1712 may be formed in a flexible manner to correspond to the shape of the sensor guide groove. The flexible PCB 1712 may be formed with a terminal portion 1713.

[0141] Terminal 1713 can supply power to the first sensor 1711 via the flexible PCB 1712 by receiving power. Furthermore, terminal 1713 can receive control commands regarding the first sensor 1711 or transmit values ​​sensed by the first sensor 1711. For example, four terminals 1713 can be formed to be electrically connected to the upper support member 1610. In this case, two terminals 1713 can be used to receive power from the upper support member 1610, and the remaining two terminals 1713 can be used to send / receive information or signals.

[0142] The second sensor unit 1720 can be disposed at the stator 1400. The second sensor unit 1720 can be disposed on the upper or lower surface of the circuit board 1410. For example, the second sensor unit 1720 can be disposed on the sensor mounting portion 1530 formed at the base 1500 by being disposed on the lower surface of the circuit board 1410. For example, the second sensor unit 1720 may include a Hall sensor. In this case, the second sensor unit 1720 can sense the magnetic field of the second drive unit 1320 to sense the relative motion of the second mover 1300 relative to the stator 1400. For example, two or more second sensor units 1720 can be formed to detect motion along both the x-axis and y-axis.

[0143] The camera module according to an exemplary embodiment may further include a first coupling portion 1810, a second coupling portion 1820, and an adhesive injection hole 1830. However, in the camera module according to an exemplary embodiment of the present invention, at least one of the first coupling portion 1810, the second coupling portion 1820, and the adhesive injection hole 1830 may be omitted.

[0144] The first coupling portion 1810 may be disposed on the outer peripheral surface 1021 of the lens module 1020. The first coupling portion 1810 may move together with the second coupling portion 1820. Either the first coupling portion 1810 or the second coupling portion 1820 may include a protrusion, and either the first coupling portion 1810 or the second coupling portion 1820 may include a groove, thereby allowing the first coupling portion 1810 to move by being guided to the second coupling portion 1820.

[0145] The first coupling portion 1810 can be provided on the upper surface of the lens module 1020. The lens module 1020 can be coupled to the inside of the spool 1210 by inserting it into the opening 1110 of the cover member 1100 at the assembled lens drive unit 1000. Therefore, when the first coupling portion 1810 is provided on the upper surface of the lens module 1020, and when epoxy resin is applied from the upper surface of the lens module 1020, the operator's visibility can be improved. Furthermore, as a modification, the first coupling portion 1810 can be provided on the lower surface of the lens module 1020, and in this case, it is advantageous to apply epoxy resin from the lower surface of the lens module 1020. In addition, the direction in which the lens module 1020 is coupled to the spool 1210 can be from the upper surface or from the lower surface. That is, the direction can be any direction.

[0146] The first coupling portion 1810 can be adhered to the second coupling portion 1820 by an adhesive (not shown). The adhesive can be an epoxy resin that is cured by UV radiation or thermosetting. The adhesive can be injected between the first coupling portion 1810 and the second coupling portion 1820 through the adhesive injection hole 1830.

[0147] The first coupling portion 1810 may include protrusions 1811 and 1812 projecting outward from the outer peripheral surface of the lens module 1020. For example, protrusions 1811 and 1812 may include a first protrusion 1811 and a second protrusion 1812. Furthermore, as a variation, protrusions 1811 and 1812 may include one or more than three protrusions.

[0148] Protrusions 1811 and 1812 may include a first protrusion 1811 and a second protrusion 1812 projecting outward from the outer peripheral surface 1021 of the lens module 1020. An imaginary line connecting the first protrusion 1811 and the second protrusion 1812 may pass through the center of the lens module 1020 (see [reference]). Figure 4 (C). That is, the first protrusion 1811 and the second protrusion 1812 can be disposed on the side opposite to the lens module 1020. Simultaneously, the first protrusion 1811 and the second protrusion 1812 can be formed into corresponding shapes. The first protrusion 1811 and the second protrusion 1812 can be cubic in shape. However, the present invention is not limited thereto.

[0149] The outward protrusion length (L1) of the first protrusion 1811 and the second protrusion 1812 can be longer than the distance (L2) between the outer peripheral surface 1021 of the lens module 1020 and the inner peripheral surface 1215 of the bobbin 1210. Therefore, when the protrusions 1811 and 1812 are inserted into the recesses 1823 and 1824, the relative movement of the bobbin 1210 at the lens module 1020 can be restricted.

[0150] The second coupling portion 1820 can be disposed at the inner peripheral surface 1215 of the tube 1210. The first coupling portion 1810 can move within the second coupling portion 1820. That is, the second coupling portion 1820 can guide the movement of the first coupling portion 1810. Furthermore, by restricting the direction of movement of the first coupling portion 1810, the second coupling portion 1820 can minimize the movement of the lens module 1020 relative to the tube 1210 caused by external impact.

[0151] The second coupling portion 1820 may include a first guide portion 1821 and a second guide portion 1822. The second coupling portion 1820 may include a second guide portion 1822, which extends from the lower end of the first guide portion 1821 to be inclined against the first guide portion 1821.

[0152] The first guide portion 1821 can extend from its upper end along the optical axis, allowing the first coupling portion 1810 of the lens module 1020, which is coupled from the upper side to the lower side of the spool 1210, to be inserted into the first guide portion 1821. For example, the first guide portion 1821 can extend directly from the upper end of the spool 1210 along the bottom direction. The width of the first guide portion 1821 can correspond to the width of the protrusions 1811 and 1812. The upper end (i.e., the inlet) of the first guide portion 1821 can be provided with a guide structure to allow easy insertion of the protrusions 1811 and 1812.

[0153] The second guide portion 1822 may extend at the lower end of the first guide portion 1821 to abut against the first guide portion 1821 at an angle. Alternatively, the second guide portion 1822 may have a shape that curves from the first guide portion 1821. With this structure, the protrusions 1811 and 1812 that move along the first guide portion 1821 can move to the second guide portion 1822. Simultaneously, the second guide portion 1822 may extend a predetermined distance from the lower end of the first guide portion 1821. For example, the protrusions 1811 and 1812 may be fixed to the distal end of the second guide portion 1822 or its vicinity by adhesive.

[0154] Alternatively, the angle formed by the first guide portion 1821 and the second guide portion 1822 can be a right angle. That is, the first guide portion 1821 and the second guide portion 1822 can form However, the present invention is not limited thereto, and the angle formed by the first guide portion 1821 and the second guide portion 1822 can be an acute angle or an obtuse angle.

[0155] The second coupling portion 1820 may include recesses 1823 and 1824 that are recessed outward from the inner peripheral surface 1215 of the spool 1210. Recesses 1823 and 1824 may include a first recess 1823, in which a first protrusion 1811 moves. Recesses 1823 and 1824 may also include a second recess 1824, in which a second protrusion 1812 moves. The first and second recesses 1823 and 1824 may have corresponding shapes. Optionally, the first and second recesses 1823 and 1824 may each have a shape corresponding to the shapes of the first and second protrusions 1811 and 1812, respectively. In this case, the first recess 1823 can accommodate the first protrusion 1811, and the second recess 1824 can accommodate the second protrusion, thereby facilitating the assembly of the lens module 1020 onto the spool 1210.

[0156] Adhesive injection hole 1830 extends from the upper end of the spool 1210 to the second guide portion 1822. Adhesive can be injected into the second guide portion 1822 through adhesive injection hole 1830. The adhesive injected into adhesive injection hole 1830 can be injected between the first coupling portion 1810 and the second coupling portion 1820. At this time, the adhesive (not shown) can be an epoxy resin that is cured or hardened by ultraviolet light or heat, thereby placing the lens module 1020 in the correct position on the spool 1210, and the adhesive can be cured or hardened by irradiation with UV rays or heat. The optical axis of the lens module 1020 and the optical axis of the image sensor can also be aligned using adhesive. However, when the lens module 1020 is coupled to the lens drive unit 1000, the image sensor can also be coupled.

[0157] The optical axis length (A1) of the first coupling portion 1810 can be shorter than the optical axis length (A2) of the second guide portion 1822, thereby providing space between the first coupling portion 1810 and the second guide portion 1822, and adhesive can be injected into said space.

[0158] When the first coupling portion 1810 is located on the lower surface of the distal end of the second coupling portion 1820, the upper end of the spool 1210 can be located above the upper end of the lens module 1020, and the lower end of the spool 1210 can be located further down than the lower end of the lens module 1020. That is, the optical axis height (H2) of the spool 1210 can be greater than the optical axis height (H1) of the lens module 1020. However, when the first coupling portion 1810 is located on the lower surface or distal end of the second coupling portion 1820, the upper end of the spool 1210 can be located below the lower end of the lens module 1020. Furthermore, the lower end of the spool 1210 can be located above the lower end of the lens module 1020. Furthermore, the optical axis height of the lens module 1020 can be greater than the optical axis height of the spool 1210.

[0159] In the following, the operation and effects of the camera module according to an exemplary embodiment of the present invention will be described in detail with reference to the accompanying drawings.

[0160] First, the AF function of the camera module according to an exemplary embodiment will be described.

[0161] When power is supplied to the first drive unit 1220 equipped with a coil, in response to the electromagnetic interaction between the second drive unit 1320, on which the first drive unit 1220 is formed, and the magnet, the first drive unit 1220 can move to the second drive unit 1320. At this time, the spool 1210 coupled to the first drive unit 1220 can move integrally with the first drive unit 1220. That is, the spool 1210 coupled to the inside of the lens module 1020 can move vertically relative to the housing 1310. The movement of the spool 1210 thus allows the lens module 1020 to move closer to or further away from the image sensor, thereby enabling focusing of the object.

[0162] Simultaneously, AF feedback can be applied to realize the AF function of the camera module according to an embodiment of the present invention. A first sensor 1711, on which the spool 1210 is mounted and a Hall sensor is formed, can detect the magnetic field of the second mover 1320 formed by the magnet fixed to the housing 1310. Simultaneously, when the spool 1210 performs relative movement relative to the housing 1310, the amount of the magnetic field detected from the first sensor can be changed. The first sensor 1711 can detect the movement or position of the spool 1210 in the z-axis direction using the method described above and transmit the detected value to the controller. The controller can determine whether to perform additional movement relative to the spool 1210 based on the received detection value. This process is generated in real time, enabling the autofocus function according to an exemplary embodiment of the present invention to be implemented more accurately through autofocus feedback.

[0163] The hand shake correction function according to an exemplary embodiment of the present invention, namely the "OIS (Optical Image Stabilization)" of the camera module, will now be described.

[0164] When power is supplied to the third drive unit 1420, in response to the electromagnetic interaction between the second drive unit 1320, on which the third drive unit 1420 is formed, and the magnet, the second drive unit 1320 can move in accordance with the movement of the third drive unit 1420. At this time, the housing 1310 coupled to the second drive unit 1320 can move integrally with the second drive unit 1320. That is, the housing 1310 can move horizontally relative to the base 1500. Simultaneously, the housing 1310 can be guided to tilt relative to the base 1500. This movement of the housing 1310 causes the lens module 1020 to move relative to the image sensor in a direction parallel to the direction of the image sensor, thereby enabling the OIS function.

[0165] At the same time, OIS feedback can be applied to more accurately implement the OIS function of the camera module.

[0166] A pair of second sensor units 1720, mounted on the base 1500 and formed within the Hall sensor, can detect the magnetic field generated by the second drive unit 1320 in the magnet fixed to the housing 1310. Simultaneously, when the housing 1310 performs relative movement relative to the base 1500, the amount of the magnetic field detected by the second sensor units 1720 can be changed. In this way, the pair of second sensor units 1720 can detect the amount or position of horizontal (x-axis and y-axis) movement at the housing 1310 and send the detected values ​​to the controller. The controller can determine whether to perform additional movement relative to the housing 1310 based on the received detection values. This process is generated in real time, enabling more accurate implementation of the OIS function of the camera module according to an exemplary embodiment of the present invention through OIS feedback.

[0167] The process of coupling the lens module to the spool at the camera module according to an exemplary embodiment will be described below.

[0168] First, the lens drive unit 1000 in its assembled state can be prepared. The lens module 1020 can be inserted into the lens drive unit 1000 through the opening 1110 on the upper surface 1101 of the cover member 1100 formed on the lens drive unit 1000. During this process, the first protrusion 1811 provided on the outer peripheral surface 1021 of the lens module 1020 can be inserted into the first recess 1823 formed on the inner peripheral surface 1215 of the bobbin 1210, and the second protrusion 1812 of the lens module 1020 can be inserted into the second recess 1824 of the bobbin 1210. Obviously, the first protrusion 1811 can be inserted into the second recess 1824, and the second protrusion 1812 can be inserted into the first recess 1823. However, the lens module 1020 can also be inserted into the lens drive unit 1000 through the lower side.

[0169] The coupling between the first protrusion 1811 and the first recess 1823 corresponds to the coupling between the second protrusion 1812 and the second recess 1824. Therefore, in the following description, the explanation will focus on the coupling between the first protrusion 1811 and the first groove 1823.

[0170] The first protrusion 1811 can be inserted into the first guide portion 1821 extending from the upper end of the spool 1210 to the lower side. The first protrusion 1811 can be guided by the inner wall forming the first guide portion 1821. That is, the first protrusion 1811 can be guided by the first guide portion 1821 during the process of the lens module 1020 being accommodated in the lower side relative to the spool 1210.

[0171] Subsequently, the first protrusion 1811 can be restricted from downward movement by being hooked at the distal end of the first guide 1821. In this state, the first protrusion 1811 can move along the second guide 1822. That is, the lens module 1020 rotates relative to the spool 1210. At this time, the direction of rotation can be clockwise or counterclockwise. When the lens module 1020 rotates relative to the spool 1210 by a predetermined angle, the first protrusion 1811 can be located at or near the distal end of the second guide 1822.

[0172] In this state, adhesive can be injected through adhesive injection hole 1830, and the injected adhesive can be injected between the first protrusion 1811 and the second guide 1822. Thereafter, the lens module 1020 is positioned precisely relative to 1210, and UV rays or heat are radiated to harden or cure the epoxy resin (adhesive). The lens module 1020 can be coupled to the spool 1210 via the cured adhesive.

[0173] Even when external vibrations occur, the lens module 1020, thus coupled, can initially absorb external vibrations through the adhesive, and its movement can be restricted by the inner sidewalls forming the first protrusion 1811 and the second guide 1822. That is, through exemplary embodiments, it can minimize the phenomenon of resolution defects caused by the lens module 1020 moving from the bobbin 1210 due to external vibrations.

[0174] Figure 6 This is a schematic exploded perspective view illustrating a camera module according to an exemplary embodiment of the present invention.

[0175] Reference Figure 6 According to an exemplary embodiment of the present invention, a camera module may include: a spool 110 including a lens barrel formed to allow multiple lenses to be stacked; a cover member 300 providing a receiving space for receiving the spool 110 and formed to receive the spool 110; a sensor bracket 400 formed on the lower surface of the cover member 300 to support the lower surface of the cover member 300; an image sensor 500 disposed on a surface of the sensor bracket 400 for converting light incident from the spool 110 into an electrical signal; and a substrate portion 600 providing a space for arranging the image sensor 500 and transmitting the electrical signal converted by the image sensor 500 to a controller (not shown).

[0176] The sensor bracket 400 can be inserted between the lower surface of the cover member 300 and the upper surface of the base plate portion 600.

[0177] More specifically, the sensor support 400 can be assembled in such a way that the sensor support 400 is attached to the lower surface of the cover member 300 to allow the sensor support 400 and the cover member 300 to be coupled, and when the sensor support 400 and the cover member 300 are in the coupled state, the sensor support 400 is accommodated on the upper surface of the substrate portion 600.

[0178] However, this is an illustration of an exemplary embodiment, and if desired, the user may omit the sensor bracket 400 and allow the cover member 300 to be directly coupled to the substrate portion 600, the construction of which does not limit the scope of the invention.

[0179] The sensor holder 400 may be configured to further include a filter section 410 at its center. The sensor holder 400 may be optically shaped as a hollow aperture, the structure of which is for the lens barrel to collect light from the outside and allow light to pass through the sensor holder 400 to transmit the light to the image sensor 500.

[0180] That is, light collected from the outside through the lens barrel passes through the central region of the sensor bracket 400, wherein the filter section 410 is arranged in the central region of the sensor bracket 400 to allow light of the necessary wavelength band to be identified and transmitted to the image sensor 500.

[0181] The filter unit 410 according to an exemplary embodiment of the present invention may be an IR cutoff filter. The IR cutoff filter may include a wavelength band in the IR region in which external light collected by the lens barrel cannot be seen by a person, wherein the image sensor 500 is a component that blocks the light in the wavelength band in the IR region so as to prevent the light in the IR region from being distorted into other colors different from the actual colors by such identification.

[0182] However, if necessary, the filter section 410 according to an exemplary embodiment of the present invention may be configured with a filter that blocks wavelength bands other than the IR region, and the configuration of the filter does not limit the scope of protection of the present invention.

[0183] The substrate portion 600 may include: a substrate base 610, providing a surface on which a wire spool 110, a cover member 300, a sensor bracket 400, and an image sensor 500 are disposed; a connector portion 650, which transmits signals received from the substrate base 610 to a controller (not shown); and a connecting substrate 630, one end of which is electrically connected to the substrate base 610 and the other end of which is electrically connected to the connector portion 650, so as to allow electrical signals generated by the substrate base 610 to be transmitted to the connector portion 650.

[0184] The connecting substrate 630 can be formed from a flexible PCB (flexible printed circuit board). When the connecting substrate 630 is formed from an FPCB, unlike a conventional PCB, the connecting substrate 630 can be bent freely, which allows for more efficient use of limited space.

[0185] However, this is an explanation of an exemplary embodiment, and therefore, if necessary, the connection substrate 630 can be changed to or other general PCBs besides the FPCB can be used, and its configuration does not limit the scope of protection of the present invention.

[0186] Figure 7(a) and 7(b) This is a schematic diagram showing the assembly state of the lens barrel assembly, sensor bracket, and substrate according to an exemplary embodiment of the present invention.

[0187] Referring to Figures 7(a) and 7(b), the upper surface of the substrate base 610 may be sequentially stacked with a sensor bracket 400, an image sensor (not shown), and a cover member 300 for accommodating the spool 110.

[0188] The substrate base 610 may include, on at least one surface adjacent to the substrate base 610 and the cover member 300, a substrate portion 600 and a plurality of terminal portions 611 that electrically connect the substrate portion 600 to the image sensor 500.

[0189] The terminal portion 611 may include a first terminal portion 6111 formed along a first surface of the lower surface of the cover member 300, and a second terminal portion 6113 formed along a second surface of the lower surface of the cover member 300 opposite to the first surface.

[0190] Furthermore, epoxy resin 700 may be included on the third surface of the lower surface of the cover member 300 adjacent to the first surface on which the first terminal portion 6111 is arranged, and on the fourth surface of the lower surface of the cover member 300 opposite to the third surface.

[0191] That is, epoxy resin 700 can be disposed on the lower surface of the cover member 300 where the terminal portion 611 is not formed, in order to prevent the volume increase when epoxy resin 700 is disposed on the upper surface of the terminal portion 611.

[0192] However, the epoxy resin 700 and the terminal portion 611 can be arranged in different positions according to the user's needs, as long as the image sensor 500 and the substrate portion 600 are electrically connected through the terminal portion 611 and the cover member 300 and the sensor bracket 400 are physically connected. Therefore, the scope of protection of the present invention is not limited thereto.

[0193] Figure 8(a) is a schematic diagram of a camera module before the formation of the second epoxy resin according to an exemplary embodiment of the present invention, and Figure 8(b) is a schematic diagram of a camera module after the formation of the second epoxy resin according to an exemplary embodiment of the present invention.

[0194] refer to Figure 8(a) and 8(b) According to an exemplary embodiment of the present invention, a camera module may include: a cover member 300 forming the appearance of the camera module; a base 210 disposed on one surface of the cover member 300 to support the cover member 300; a sensor bracket 400 providing space for receiving the base 210; a first epoxy resin 710 inserted between the sensor bracket 400 and the base 210 to attach the base 210 to the sensor bracket 400; and a substrate portion 600 disposed on one surface of the sensor bracket 400 and providing space for arranging an image sensor (500, FIG. 7), and transmitting and converting electrical signals converted by the image sensor 500 to a controller (not shown).

[0195] The base 210 may include a base rib 216, which is formed protrudingly on the outer peripheral surface to support the cover member 300.

[0196] More specifically, the base rib 216 may include: a first rib 2161, projecting outward toward the base 210 to support the left side of the cover member 300; and a second rib 2163, projecting outward toward the base 210 to support the right side of the cover member 300.

[0197] However, this is an explanation of an exemplary embodiment. Therefore, the shape of the base rib 216 can be changed according to the user's needs, and the base rib 216 is sufficient as long as it can support the cover member 300. The scope of protection of the present invention is not limited to the foregoing embodiments of the present invention.

[0198] Although the base rib 216 shown in Figure 8(a) is formed to support the cover member 300, the base rib 216 may sag in a direction parallel to the direction of gravity due to the load on the cover member 300 or external impact.

[0199] As a result, defocusing problems caused by the drooping base rib 216 may occur, which may reduce the quality of the camera module.

[0200] To address the aforementioned issues, the camera module shown in Figure 8(b) will be described as follows.

[0201] The basic structure of the camera module shown in Figure 8(b) is the same as that of the camera module shown in Figure 8(a). Therefore, the description of the same components will be omitted, and only the differences will be described below.

[0202] The first epoxy resin 710 is inserted between the base 210 and the sensor bracket 400. FIG8(a) shows that the first epoxy resin 710 is not arranged between the base rib 216 and the sensor bracket 400, which can cause the base rib 216 to sag due to the load on the cover member 300 or an externally applied impact.

[0203] Therefore, to prevent the base rib 216 from sagging, the camera module according to an exemplary embodiment of the present invention may include a second epoxy resin 730 between the sensor bracket 400 and the base rib 216. The first epoxy resin 710 and the second epoxy resin 730 may be formed of the same material. Alternatively, the first epoxy resin 710 and the second epoxy resin 730 may be formed of different materials. The arrangement of the second epoxy resin 730 between the sensor bracket 400 and the base rib 216 achieves the effect of preventing the base rib 216 from sagging due to the load on the cover member 300 or externally applied impacts.

[0204] Figure 9 This is a schematic diagram illustrating a sensor bracket of a lens driving device according to an exemplary embodiment of the present invention.

[0205] Reference Figure 9 According to an exemplary embodiment, the sensor holder 400 may include: inclined portions 431, 433 disposed on the outer side of the sensor holder 400; epoxy resin receiving portions 451, 453 disposed on one surface of the sensor holder 400 to receive epoxy resin 700; dust collector receiving portions 471, 473 disposed on one surface of the sensor holder 400 and arranged to be radially spaced from the epoxy resin receiving portions 451, 453 by a predetermined distance; upper protruding ribs 481, 483 protruding upward from the sensor holder 400 at a predetermined height to prevent foreign objects from intruding into the central portion of the sensor holder 400 from the outside; and lower protruding ribs 491, 493 protruding downward from the sensor holder 400 at a predetermined height to fix the sensor holder 400 to the substrate portion (600, FIG. 8).

[0206] The beveled portions 431 and 433 can have the advantageous effect of hardening the epoxy resin 700 inserted between the sensor bracket 400 and the cover member 300.

[0207] More specifically, in order to harden the epoxy resin 700 that couples the sensor holder 400 to the cover member 300 by arranging epoxy resin 700 between the sensor holder 400 and the cover member 300, the epoxy resin 700 is first hardened using UV (ultraviolet) rays, and heat is applied to harden the epoxy resin 700 a second time to firmly couple the sensor holder 700 and the cover member 300.

[0208] At this point, during the initial curing process, ultraviolet light must be irradiated toward the epoxy resin 700, and advantageously, beveled portions 431, 433 are formed on the outer surface of the sensor holder 400 to allow for more efficient irradiation of ultraviolet light toward the epoxy resin 700, thereby promoting the curing of the epoxy resin 700.

[0209] The dust collector housings 471 and 473 are used to prevent dust and other foreign objects from entering the central part of the sensor bracket 400 coupled to the lens barrel assembly.

[0210] More specifically, the dust collector housings 471 and 473 can be recessed to a predetermined height on the upper surface of the sensor bracket 400. Alternatively, a dust collector (not shown) with adhesive capabilities can be provided on the lower surface of the dust collector housings 471 and 473.

[0211] That is, when a foreign object introduced from the outside moves in a direction parallel to gravity by its own weight, the foreign object can adhere to a dust collector (not shown) with adhesive capabilities, thereby advantageously preventing the foreign object from entering the central portion of the sensor support 400. However, the shape and arrangement of the dust collector housings 471 and 473 can be changed as needed, and the shape and arrangement of the dust collector housings 471 and 473 are not limited as long as foreign objects are prevented from entering the central portion of the sensor support 400 from the outside.

[0212] The epoxy resin receptacles 451 and 453 will be described in detail with reference to Figures 10(a) to (d).

[0213] Figure 10(a) and 10(d) This is a schematic diagram illustrating various exemplary embodiments of the epoxy resin housing of the sensor holder in a lens driving device according to an exemplary embodiment of the present invention.

[0214] Referring to Figures 10(a) to (d), the epoxy resin receiving portions 451, 453 of the sensor holder 400 in the lens driving device according to an exemplary embodiment of the present invention may be formed in a shape for more efficiently accommodating the first epoxy resin 710.

[0215] As shown in Figure 10(a), the epoxy resin receiving portion 450 can be formed to be recessed towards the bottom. The purpose of this is to widen the space for receiving epoxy resin so that when more epoxy resin 700 is applied during the process of coating epoxy resin 700 onto epoxy resin receiving portion 450, the epoxy resin 700 is effectively prevented from overflowing into the environment because the epoxy resin receiving portion 450 is formed to be recessed towards the bottom.

[0216] Referring to Figure 10(b), the epoxy resin receiving portion 450 can be formed with steps. Since the epoxy resin receiving portion 450 is formed with steps, when more epoxy resin than required is applied during the epoxy resin coating process, the space for containing the epoxy resin can be widened to effectively prevent the epoxy resin 700 from overflowing into the environment.

[0217] However, although the number of steps in the epoxy resin accommodating portion 450 shown in FIG10(b) can be formed as shown, the number of steps can be multiple if needed. The present invention is not limited thereto and this is not intended to limit the scope of protection of the present invention.

[0218] Referring to FIG10(c), the epoxy resin receiving portion 450 may include a plurality of protruding receiving portions 455 formed to protrude a predetermined height toward the upper surface of the epoxy resin receiving portion 450.

[0219] The cross-sectional shape of the protruding receptacle 455 can also be hemispherical, triangular, or other shapes as needed, as shown in Figure 10(c). Due to the multiple protruding receptacles 455 formed on the epoxy resin receptacle 450, the contact surface area between the protruding receptacle 455 and the epoxy resin coated on the epoxy resin receptacle 450 can be widened to allow for more effective and reliable coupling between the epoxy resin 700 and the epoxy resin receptacle 450.

[0220] Referring now to FIG10(d), the epoxy resin receptacle 450 may include a plurality of recessed receptacles 457 recessedly formed on the upper surface of the epoxy resin receptacle 450.

[0221] The cross-sectional shape of the recessed receiving portion 457 can be hemispherical or triangular, as shown in FIG10(c), or other shapes may be used as needed. Due to the multiple recessed receiving portions 455 formed on the epoxy resin receiving portion 450, the contact surface area between the recessed receiving portion 457 and the epoxy resin coated on the epoxy resin receiving portion 450 can be widened to allow the epoxy resin 700 and the epoxy resin receiving portion 450 to be coupled more effectively and reliably.

[0222] although Figures 10(a) to 10(b) Several exemplary embodiments of epoxy resin receptacles 451, 453 with different shapes have been shown. The shapes of epoxy resin receptacles 451, 453 are not limited thereto, and the beveled portions 431, 433 may be formed in the same shape as epoxy resin receptacles 451, 453.

[0223] Figure 11 This is a schematic perspective view illustrating a lens driving device according to an exemplary embodiment of the present invention, and Figure 12 It is shown Figure 11An exploded perspective view of the lens driving device illustrated in the figure.

[0224] refer to Figure 11 According to an exemplary embodiment of the present invention, the lens driving device may include a first lens driving unit (not shown), a second lens driving unit (not shown), and a cover member 300. Here, the first lens driving unit 100 can perform the functions of the AF device described above, and the second lens driving unit 200 can perform the functions of the OIS device described above.

[0225] The cover member 300 can be substantially box-shaped to cover the first lens driving unit and the second lens driving unit (not shown).

[0226] like Figure 12 As shown, a lens driving device according to an exemplary embodiment of the present invention may include a moving part. In this case, the moving part can perform AF and OIS functions for the lens. The moving part may include a bobbin 110, a first coil 120, a first magnet 130, a housing 140, an upper elastic member 150, and a lower elastic member 160.

[0227] The spool 110 may have a first coil 120 formed on its outer peripheral surface, arranged inside the first magnet 130, and may be reciprocally mounted in the internal space of the housing 140 along a first direction through the electromagnetic interaction between the first magnet 130 and the first coil 120. The first coil 120 may be mounted on the outer peripheral surface of the spool 110 to achieve electromagnetic interaction with the first magnet 130.

[0228] Furthermore, the spool 110 may be elastically supported by an upper elastic member 150 and a lower elastic member 160 to perform the AF function by moving along a first direction. The spool 110 may include a lens barrel (not shown) in which at least one lens is mounted. The lens barrel may be coupled to the inside of the spool 110 by various methods.

[0229] For example, the inner circumferential surface of the spool 110 may have an internal thread, and the outer circumferential surface of the lens barrel may have an external thread corresponding to the internal thread, so as to couple the lens barrel to the spool 110 through threaded coupling. However, the present invention is not limited to this, and as an additional coupling method, the lens barrel may be directly coupled to the inner side of the spool 110 without forming a thread on the inner circumferential surface of the spool 110. Optionally, a lens may be integrally formed with a spool 110 without a lens barrel.

[0230] The lens coupled to the lens barrel can be formed by a single lens, or two or more lenses can be used to form an optical system.

[0231] The AF function can be controlled by the direction of the current, and the operation of moving the drum 110 along a first direction can realize the AF function. For example, when a current is applied in the forward direction, the drum 110 can move upward from the initial position, and when a current is applied in the opposite direction, the drum 110 can move downward from the initial position. Alternatively, the amount of current in one direction can be adjusted to increase or decrease the distance in one direction from the initial position.

[0232] The upper and lower surfaces of the spool 110 may be provided with a plurality of upper support lugs and a plurality of lower support lugs. The upper support lugs may be cylindrical or prismatic in shape to couple with or fix the upper elastic member 150. The lower support lugs may be cylindrical or prismatic in shape as upper support lugs to couple with or fix the lower elastic member 160.

[0233] The upper elastic member 150 can be formed on the upper side of the tubing 110, and the lower elastic member 160 can be formed on the lower side of the tubing 110. In this case, the upper elastic member 150 can have a through hole corresponding to the upper support lug, and the lower elastic member 160 can have a through hole corresponding to the lower support lug. Each of the support lug and the through hole can be fixedly connected by heat fusion or an adhesive such as epoxy resin.

[0234] The housing 140, which has the shape of a hollow column supporting the first magnet 130, can be substantially square. The side portions of the housing 140 can be arranged by coupling the first magnet 130 and the support member 220 respectively.

[0235] Furthermore, the housing 140 constructed in this way may have a bobbin 110 disposed therein, the bobbin 110 being guided by elastic members 150 and 160 to move in a first direction. In an exemplary embodiment, a first magnet 130 may be disposed at a corner region of the housing 140, and a support member 220 may be disposed on the side.

[0236] The upper elastic member 150 and the lower elastic member 160 can be elastically supported to the rising and / or falling operation of the spool 110 in a first direction. Each of the upper elastic member 150 and the lower elastic member 160 can be formed with a leaf spring.

[0237] As shown in Figure 7, the upper elastic member 150 can be formed by dividing it into two parts. With this two-part structure, each separate part of the upper elastic member can be applied with currents or electric currents of different polarities. Alternatively, as a variation, the lower elastic member 160 can also be formed by dividing it into two parts, or it can be integrally formed with the upper elastic member 150.

[0238] Meanwhile, the upper elastic member 150, the lower elastic member 160, the spool 110, and the housing 140 can be assembled by heat fusion and / or by bonding with adhesive. In this case, the fixing operation can be completed by bonding with adhesive after heat fusion.

[0239] The base 210 can be shaped as a basic square on the lower surface of the tubing 110 to accommodate the PCB 250 and can be fixed by the lower side of the support member 220. Furthermore, the upper surface of the base 210 can be recessed to form a support member 220 receiving groove 214 into which the support member 220 can be inserted. The support member 220 receiving groove 214 can be coated with adhesive to fix the support member 220 and prevent it from moving.

[0240] A support groove of corresponding size can be formed on the surface opposite to the area where the terminal surface 253 of the PCB 250 is formed at the base 210. In order to prevent the area where the terminal surface 253 is formed from protruding outward or to adjust the protrusion, the support groove can be recessed inward from the outer peripheral surface of the base 210 to a predetermined depth.

[0241] The support member 220 may be arranged on the side of the housing 140, coupled to the upper side of the housing 140 and coupled to the lower side of the base 210, and may movably support the spool 110 and the housing 140 in a second direction perpendicular to the first direction to the third direction, and may be electrically connected to the first coil 120.

[0242] Each of the support members 220 according to an exemplary embodiment of the present invention may be arranged on the outer side of the square housing 140, wherein a total of four support members 220 may be symmetrically mounted. The invention is not limited thereto; a total of eight support members 220 may be formed, with two support members on each straight surface. Furthermore, the support members 220 may be electrically connected to the upper elastic member 150, or alternatively, may be electrically connected to the straight surface of the upper elastic member.

[0243] Furthermore, the support member 220 is formed as a separate member from the upper elastic member 150, such that the support member 220 and the upper elastic member 150 can be electrically connected using conductive adhesive or by welding. Therefore, the upper elastic member 150 can apply current to the first coil 120 through the electrically connected support member 220.

[0244] At the same time, although Figure 12 A plate-shaped support member 220 has been shown as an exemplary embodiment, but the invention is not limited thereto. That is, the support member can be formed in the shape of a line.

[0245] The second coil 230 can perform the OIS function by moving the housing 140 in a second and / or third direction through electromagnetic interaction with the first magnet 130.

[0246] Here, the second and third directions can include not only the x-axis and y-axis directions, but also directions substantially close to the x-axis and y-axis. That is, in terms of the drive according to the exemplary embodiment, although the housing 140 can move parallel to the x-axis and y-axis, the housing 140 can also move slightly tilted relative to the x-axis and y-axis while being supported by the support member 220.

[0247] In addition, it may be necessary to install the first magnet 130 at a position corresponding to the position of the second coil 230.

[0248] The second coil 230 can be arranged opposite the first magnet 130 fixed to the housing 140. As an exemplary embodiment, the second coil 230 can be arranged outside the first magnet 130. Alternatively, the second coil 230 can be mounted on the underside of the first magnet and spaced a predetermined distance from the first magnet.

[0249] According to an exemplary embodiment, the second coil 230 may be installed at each of the four corners of the circuit member 231, for a total of four. However, the invention is not limited thereto; only two second coils 230 may be installed, one in the second direction and one in the third direction, or more than four second coils 230 may be installed.

[0250] In this exemplary embodiment, although the circuit pattern is formed on the circuit member 231 in the shape of the second coil 230, and a separate second coil may be additionally arranged on the upper surface of the circuit member 231, the present invention is not limited thereto. The circuit member 231 may not be formed with a circuit pattern having the shape of the second coil 230, and a separate second coil 230 may be arranged only on the upper surface of the circuit member 231.

[0251] Alternatively, the second coil 230 may be formed as a wire with a circular loop shape, or the second coil 230 may be formed as an FP coil type for electrical connection to PCB 250.

[0252] The second coil 230 can be arranged on the upper surface of the base 210 and the lower surface of the housing 140. At this time, the circuit component 231 including the second coil 230 can be mounted on the upper surface of the PCB 250 arranged on the upper side of the base 210.

[0253] However, the invention is not limited thereto, and the second coil 230 may also be rigidly and closely arranged on the base 210, may be spaced apart at a predetermined distance, or may be formed on a separate substrate to allow the substrate to be stacked on and connected to the PCB 250.

[0254] PCB250 can be coupled to the upper surface of base 210, and as... Figure 12 As shown, through holes or grooves can be formed at the corresponding locations to allow the support member 220 to accommodate the exposed groove 214.

[0255] PCB 250 may have a terminal surface 253 formed by bending, and terminals 251 are formed on the terminal surface. In an exemplary embodiment, a PCB 250 formed by two bent terminal surfaces 253 is shown. The terminal surface 253 may be configured with a plurality of terminals 251 to receive external power, thereby supplying current to the first coil 120 and the second coil. The number of terminals formed on the terminal surface 253 may be increased or decreased depending on the type of component required for control. Furthermore, PCB 250 may have one or more than three terminal surfaces 253.

[0256] The cover member 300 can be configured in a generally box-like shape to accommodate a portion of the mover, the second coil 230, and the PCB 250, and can be coupled to the base 210. The cover member 300 can protect the mover, the second coil 230, and the PCB 250 housed therein from damage, and in particular, can concentrate the electromagnetic field by limiting the exposure of the electromagnetic field generated by the mover, the second coil 230, and the PCB 250 housed therein to the outside.

[0257] Figure 13 This is a schematic diagram illustrating the base 210, PCB 250, and second coil 230 according to an exemplary embodiment of the present invention. The lens driving device may also include a position detection sensor 240.

[0258] The position detection sensor 240 can be arranged at the center of the second coil 230 to detect movement of the housing 140. At this time, the position detection sensor 240 is able to substantially detect movement of the housing 140 in a first direction, and can be configured to detect second and third direction movements of the housing 140 if necessary.

[0259] The position detection sensor 240 may be equipped with a Hall sensor. However, the invention is not limited to this, and any sensor capable of detecting changes in magnetic force can also be used as the position detection sensor. Figure 13 As shown, two position detection sensors 240 can be mounted at the corner of the base 210 disposed on the lower side of the PCB 250, and the mounted position detection sensors 240 can be inserted into the position detection sensor receiving groove 215 formed on the base 210. The lower surface of the PCB 240 can be the surface opposite to the surface on which the second coil 230 is disposed.

[0260] Meanwhile, the position detection sensor 240 can be arranged across the PCB 250 on the lower side of the second coil 230 and spaced apart by a predetermined distance. That is, the position detection sensor 240 may not be directly connected to the second coil 230, and the second coil 230 may be mounted on the upper surface based on the PCB 250, while the position detection sensor 240 may be mounted on the lower surface based on the PCB 250.

[0261] Furthermore, the lens driving device according to the foregoing exemplary embodiments can be used in various fields, including, for example, camera modules. For instance, camera modules can be applied to mobile devices such as mobile phones.

[0262] A camera module according to an exemplary embodiment may include a lens barrel coupled to a wire barrel 110 and an image sensor (not shown). In this case, the lens barrel may include at least one lens for transmitting an image to the image sensor.

[0263] In addition, the camera module may also include an IR cutoff filter (not shown). The IR cutoff filter prevents light from the IR region from incident on the image sensor. In this case, the IR cutoff filter can be mounted on... Figure 11 The image sensor in the illustrated base is located at a position corresponding to that of the support member (not shown). Furthermore, the support member can support the lower side of the base 210.

[0264] The base 210 may be fitted with individual terminal members for electrical conduction to the PCB 250, and the base and terminals may be integrally formed using surface electrodes. Additionally, the base 210 may include an adhesive member 211 for bonding the PCB 250 to the base 210. The adhesive member 211 may be formed on one side of the base 210, and as shown, may be formed at a location contacting one side surface of the PCB 250. Although the adhesive member 211 is shown formed on one surface of the base 210 in the exemplary embodiment, the adhesive member 211 may also be formed on a surface opposite to the surface on which the adhesive member 211 is formed. The adhesive member 211 in this exemplary embodiment is an exemplary embodiment; it is sufficient as long as the adhesive member can bond the PCB 250 to the base 210, and the position and number of the adhesive members 211 do not limit the scope of protection of this invention.

[0265] The receiving groove 214 of the base 210 may also include a stepped portion for coupling a spring unit (not shown).

[0266] Adhesive members 211 can be formed on one surface of the base 210 to bond the base 210 to the PCB 250. When the amount of adhesive members 211 is small, the adhesive strength between the base 210 and the PCB 250 will decrease, resulting in the PCB 250 floating off the base 210. When the amount of adhesive members 211 is large, the adhesive members 211 will intrude into the receiving groove 214, resulting in the problem that the spring unit (not shown) cannot be accurately coupled to the receiving groove 214.

[0267] Therefore, a step can be further formed on the receiving groove 214 of the base 210 to prevent the adhesive member 211 from intruding into the receiving groove 214.

[0268] The staircase may include at least one side portion 2143 forming the side of the staircase, a lower surface portion 2142 forming the lower surface of the staircase, and a staircase space 2141 formed by the side portion 2143 and the lower surface portion 2142 for receiving the adhesive member 211.

[0269] The cross-section of the lower surface portion 2142 of the step 2141 can be formed into a flat surface shape. In addition, the cross-section of the lower surface portion 2142 of the stepped space 2141 can be formed into a convex shape in a first direction perpendicular to the lower surface portion 2142.

[0270] Since the cross-section of the lower surface portion 2142 of the stepped space 2141 is convex in a first direction perpendicular to the lower surface portion 2142, the adhesive member 211 can be collected on both sides of the lower surface portion 2142 to more effectively prevent the adhesive member 211 from being introduced into the receiving groove 214.

[0271] Furthermore, the cross-section of the lower surface portion 2142 of the stepped space 2141 can be formed concavely in a first direction perpendicular to the lower surface portion 2142.

[0272] Since the cross-section of the lower surface portion 2142 of the stepped space 2141 is recessed in a first direction perpendicular to the lower surface portion 2142, the adhesive member 211 can be collected in the center direction of the lower surface portion 2142 to more effectively prevent the adhesive member 211 from being introduced into the receiving groove 214.

[0273] Furthermore, the cross-section of the lower surface portion 2142 of the stepped space 2141 can be formed in a sinusoidal shape. Since the cross-section of the lower surface portion 2142 of the stepped space 2141 is formed in a sinusoidal shape, the adhesive member 211 can be collected in the multiple recesses formed in the lower surface portion 2142, so as to more effectively prevent the adhesive member 211 from being introduced into the receiving groove 214.

[0274] Furthermore, although this exemplary embodiment has shown a stepped portion formed as a single step, multiple stepped portions may be formed.

[0275] Since the stepped portion is formed in multiple ways, a space that can accommodate the adhesive member 211 can be formed in a double or triple manner, which can more effectively prevent the adhesive member 211 from being introduced into the receiving groove 214.

[0276] The lower surface portion 2142 may further include a plurality of protruding members 2144. Each of the plurality of protruding members 2144 may protrude from the lower surface portion 2142 toward the upper surface by a predetermined height.

[0277] Because the lower surface portion 2142 also includes multiple protruding members 2144, the adhesive member 211 introduced into the stepped portion can be more effectively prevented from being introduced into the receiving groove 214 due to the increased flow resistance of the adhesive member 211 introduced into the stepped portion.

[0278] Although the accompanying drawings show multiple protruding members formed in a hemispherical shape, this is merely an example, and the invention is not limited thereto. The protruding members 2144 can be formed in a conical shape and a polygonal shape.

[0279] Meanwhile, the base 210 can be used as a sensor holder to protect the image sensor, and in this case, a lug can be formed downward along the side of the base 210. However, this is not a necessary element, and although not shown, a separate sensor holder can be provided on the lower surface of the base 210 to serve as a sensor holder.

[0280] Figure 14 This is a schematic diagram illustrating the second coil, circuit board, and base in a lens driving device according to an exemplary embodiment of the present invention.

[0281] At the same time, refer to Figure 14 The second coil 230 may include a fifth through-hole 230a passing through a corner portion of the circuit member 231. The support member 220 may pass through the fifth through-hole 230a to connect to the circuit board 250. Alternatively, when the second coil 230 has an FP coil shape, an OIS coil 232 may be formed or arranged at some portions of the FP coil. Furthermore, the fifth through-hole 230a may not be formed at the portion of the second coil 230 where the fifth through-hole 230a is formed, and this portion may be electrically soldered to the support member 220.

[0282] Although this disclosure has been explained with regard to all constituent elements forming part of exemplary embodiments of this disclosure that are combined or operate in one embodiment, this disclosure is not limited thereto. That is, in some cases, the described features, structures, or operations can be combined in one or more embodiments in any suitable manner. It will also be readily understood that components of the embodiments as generally described herein and illustrated in the accompanying drawings can be arranged and designed in a variety of different configurations.

[0283] The terminology used in this specification is provided for illustrative purposes only and should not be construed as limiting the scope and spirit of this disclosure. In this specification, unless otherwise specifically mentioned, singular terms include their plural forms. As used herein, the terms “comprising” and / or “including” do not exclude the presence or addition of one or more other components, steps, operations, and / or devices.

[0284] Unless otherwise stated, all terms, including all technical and scientific terms used herein, shall have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. It will be further understood that terms such as those defined in a general dictionary shall be interpreted as having the same meaning as they have in the relevant field and in the context of this disclosure, and shall not be construed as having an idealized or overly formal meaning, unless expressly defined herein.

[0285] Although embodiments have been described with reference to several illustrative examples, it should be understood that those skilled in the art can devise many other modifications and embodiments falling within the spirit and scope of the principles of this disclosure. More specifically, various changes and modifications can be made to the components and / or arrangements of the subject matter combinations within the scope of this disclosure, the drawings, and the appended claims.

[0286] Although the embodiments of the present invention have been described in detail with reference to the specific examples above, these embodiments are merely illustrative and therefore do not limit the scope of protection of the present invention. Therefore, those skilled in the art should understand that changes, variations, and modifications can be made to the above examples without departing from the scope of protection of the present invention.

Claims

1. A lens driving device, comprising: Base; A cover member, including an upper surface and a side extending downward from the outer side of the upper surface; The housing is disposed within the cover member; A spool is disposed within the housing; The first coil is disposed on the bobbin; A magnet is disposed on the housing; A circuit board, disposed on the base and including a second coil, and An adhesive is disposed between the side of the cover member and the base. Specifically, a stepped space and another step are formed between the side surface and the base of the cover member in a direction perpendicular to the optical axis. The stepped space is formed by a first groove formed on the side of the base. The other step is formed by a second groove formed on the first groove of the base. The other step is connected to the step space. Wherein, the depth of the other step from the side of the cover member is greater than the depth of the step space from the side of the cover member. The adhesive is disposed on the stepped space, and The lower surface of the other step and the lower surface of the step space are arranged on different horizontal planes in the direction of the optical axis to prevent the adhesive disposed on the step space from overflowing.

2. The lens driving device according to claim 1, wherein, Based on the side surface of the base, the second groove is further recessed than the first groove.

3. The lens driving device according to claim 1, wherein, The lower surface portion of the stepped space has a cross-section that protrudes or retracts in a direction perpendicular to the lower surface portion to collect the adhesive.

4. The lens driving device according to claim 1, wherein, The lower surface portion of the stepped space includes a plurality of protruding members that protrude from the lower surface portion.

5. The lens driving device according to claim 1, wherein, The circuit board includes a main body portion disposed on the upper surface of the base and a terminal portion disposed on the side surface of the base and including terminals. The base includes a first side and a second side opposite to each other, and a third side and a fourth side opposite to each other. The terminal portion includes a first terminal portion disposed on the first side of the base and a second terminal portion disposed on the second side of the base.

6. The lens driving device according to claim 5, wherein, The stepped space is formed on at least one of the third and fourth sides of the base.

7. The lens driving device according to claim 5, wherein, The base includes recesses that extend from the first side and the second side of the base, and The terminal portion is disposed on the recessed portion of the base.

8. The lens driving device of claim 1, further comprising a sensor disposed on the circuit board and configured to sense the magnet. in, The base includes a sensor receiving groove formed on the upper surface of the base, and The sensor is disposed on the sensor receiving groove of the base.

9. The lens driving device according to claim 8, wherein, The stepped space is spaced apart from the sensor receiving groove of the base.

10. The lens driving device according to claim 1, wherein, The base includes a receiving groove formed on the base and connected to the stepped space, and Wherein, based on the side surface of the base, the receiving groove is further recessed than the second groove of the base.

11. The lens driving device according to claim 10, comprising: An upper elastic member connects the upper part of the housing and the upper part of the bobbin; as well as A lower elastic member connects the lower part of the housing and the lower part of the bobbin. The upper elastic member is electrically connected to the first coil.

12. The lens driving device according to claim 11, comprising a support member electrically connected to the circuit board and the upper elastic member.

13. The lens driving device according to claim 12, wherein, A portion of the support member is disposed on the receiving groove of the base, and The portion of the support member is coupled to the receiving groove of the base by an adhesive.

14. A lens driving device, comprising: Base; A cover member, including an upper surface and a side extending downward from the outer side of the upper surface; The housing is disposed within the cover member; A spool is disposed within the housing; The first coil is disposed on the bobbin; A magnet is disposed on the housing; A circuit board, disposed on the base and including a second coil; and Adhesive, applied to the base, The adhesive is disposed between the side surface of the cover member and the base in a direction perpendicular to the optical axis. A stepped space is formed between the side surface of the cover member and the base, such that the adhesive is disposed on the stepped space. One of the steps is formed to connect with the stepped space. The stepped space is formed by a first groove formed on the side of the base. The other step is formed by a second groove formed on the first groove of the base. Wherein, the depth of the other step from the side of the cover member is greater than the depth of the step space from the side of the cover member, and The lower surface of the other step and the lower surface of the step space are arranged on different horizontal planes in the direction of the optical axis to prevent the adhesive disposed on the step space from overflowing.

15. A camera module, comprising: PCB stands for Printed Circuit Board; Image sensor, mounted on the PCB ； The lens driving device according to any one of claims 1 to 14 is disposed on the PCB; and A lens, coupled to the spool of the lens drive device.

16. An optical device, comprising: main body; The camera module according to claim 15 is used to photograph an object; as well as A display unit is provided on the main body to output images captured by the camera module.

17. A camera module, comprising: Base; Cover component, disposed on the base; A spool is provided in the cover member; A housing is disposed between the bobbin and the cover member; The first coil is disposed on the bobbin; A magnet is disposed on the housing; A second coil is disposed on the base; An elastic member connects the bobbin and the housing; The lens module is coupled to the wire drum; as well as Adhesive is used to secure the lens module to the spool. The lens module includes a protrusion extending from its outer peripheral surface. The bobbin includes a recessed portion that is recessed from the inner circumferential surface of the bobbin and accommodates at least a portion of the protrusion. The recessed portion includes a first guide portion extending in the optical axis direction and a second guide portion extending from the first guide portion in a direction perpendicular to the optical axis direction. The second guide portion is positioned higher than the middle of the bobbin. The adhesive is injected from the top of the spool, causing the protrusion of the lens module to be fixed to the recess of the spool. The spool includes an adhesive injection hole extending from the upper end of the spool to the second guide portion and spaced apart from the first guide portion. The adhesive is injected into the second guide portion through the adhesive injection hole. The stepped space is formed by the first groove formed on the side of the base. The second groove formed on the first groove of the base forms another step. The adhesive is disposed on the stepped space, and The lower surface of the other step and the lower surface of the step space are arranged on different horizontal planes in the optical axis direction to prevent the adhesive disposed in the step space from overflowing.

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