Coil module for aperture module, aperture module, lens module comprising same, and camera device

Abstract

A coil module for an aperture module according to an embodiment comprises: an insulating substrate; and a coil pattern disposed on the insulating substrate to be turned a plurality of times, wherein the coil pattern includes a first coil pattern disposed on the insulating substrate to be turned a plurality of times in a first rotation direction, and a second coil pattern disposed on the insulating substrate to be turned a plurality of times in a second rotation direction opposite to the first rotation direction, the first coil pattern includes a plurality of first coil units, and the second coil pattern includes a plurality of second coil units.

Description

Coil module for aperture module, aperture module, lens module including the same, and camera device

[0001] The embodiments relate to a coil module for an aperture module, an aperture module, a lens module including the same, and a camera device.

[0002] A camera device is a device that captures a subject as a photograph or video, and is mounted on portable devices, drones, vehicles, etc. To improve image quality, the camera device may have image stabilization (IS) functions, such as Optical Image Stabilizer (OIS), and autofocus (AF) functions to correct or prevent image shaking caused by user movement.

[0003] The camera device requires a configuration capable of adjusting the amount of incident light to suit the surrounding or shooting environment.

[0004] To this end, the camera device includes an aperture that controls the amount of incident light. The aperture rotates by a driving force applied from a driving module to control the amount of incident light.

[0005] At this time, the driving module of the aperture includes a coil member and a magnetic member, and rotates the blades constituting the aperture using the Lorentz force generated by the interaction between the coil member and the magnetic member. And the amount of incident light is controlled by the rotation of the blades.

[0006] However, as the size of the blade and the size of the magnetic member increase, the number of turns of the coil member increases. In addition, as the number of turns of the coil member increases, it is necessary to provide a miniaturized coil member accordingly. However, providing a miniaturized coil member is technically limited, and consequently, there is a problem that the Lorentz force generated between the coil member and the magnetic member is limited.

[0007] Accordingly, a coil module for an aperture module with a new structure capable of efficiently controlling the aperture blades is required.

[0008] The embodiment provides a coil module for an aperture module capable of maximizing the Lorentz force acting in a limited area, an aperture module, a lens module including the same, and a camera device.

[0009] In addition, the embodiment provides a coil module for an aperture module capable of driving the blade more stably and quickly, an aperture module, a lens module including the same, and a camera device.

[0010] In addition, the embodiment provides a coil module for an aperture module, an aperture module, a lens module including the same, and a camera device that can improve product yield while improving process difficulty.

[0011] The technical problems to be solved in the proposed embodiments are not limited to those mentioned above, and other unmentioned technical problems will be clearly understood by those skilled in the art to which the proposed embodiments belong from the description below.

[0012] A coil module for an aperture module according to an embodiment comprises an insulating substrate; and a coil pattern arranged by turning a plurality of times on the insulating substrate, wherein the coil pattern comprises a first coil pattern arranged by turning a plurality of times in a first rotational direction on the insulating substrate, and a second coil pattern arranged by turning a plurality of times in a second rotational direction opposite to the first rotational direction on the insulating substrate, wherein the first coil pattern comprises a plurality of first coil units, and the second coil pattern comprises a plurality of second coil units.

[0013] In addition, each of the plurality of first coil units is positioned between the plurality of second coil units.

[0014] Additionally, the insulating substrate includes a first substrate region including an opening, and the plurality of first coil units and the plurality of second coil units are alternately arranged on the first substrate region along the circumferential direction of the first substrate region.

[0015] Additionally, each of the plurality of first coil units and the plurality of second coil units includes an upper coil unit disposed on the upper surface of the insulating substrate, and the coil pattern includes a plurality of via electrodes penetrating the upper and lower surfaces of the insulating substrate, and a connection pattern disposed on the lower surface of the insulating substrate and electrically connecting the plurality of via electrodes, and the plurality of first coil units and the plurality of second coil units are electrically connected through the via electrodes and the connection pattern.

[0016] Additionally, each of the plurality of first coil units and the plurality of second coil units includes an upper coil unit disposed on the upper surface of the insulating substrate, and the coil pattern includes a plurality of via electrodes penetrating the upper and lower surfaces of the insulating substrate, and a connection pattern disposed on the lower surface of the insulating substrate and electrically connecting the plurality of via electrodes, and each of the plurality of first coil units and the plurality of second coil units is electrically connected through the via electrodes and the connection pattern.

[0017] Additionally, the first coil unit comprises a plurality of first upper coil units disposed on the upper surface of the insulating substrate, and a plurality of first lower coil units disposed on the lower surface of the insulating substrate and corresponding to the plurality of first upper coil units along the thickness direction of the insulating substrate, and the second coil unit comprises a plurality of second upper coil units disposed on the upper surface of the insulating substrate, and a plurality of second lower coil units disposed on the lower surface of the insulating substrate and corresponding to the plurality of second upper coil units along the thickness direction, and the coil pattern includes via electrodes that penetrate the insulating substrate along the thickness direction and electrically connect the first upper coil unit, the first lower coil unit, the second upper coil unit, and the second lower coil unit.

[0018] Additionally, the plurality of first upper coil units and the plurality of second upper coil units are alternately arranged on the upper surface of the insulating substrate, and the plurality of first lower coil units and the plurality of second lower coil units are alternately arranged on the lower surface of the insulating substrate.

[0019] Additionally, each of the plurality of first upper coil units is arranged by turning in the first rotational direction from one end on the inner side toward the other end on the outer side, each of the plurality of first lower coil units is arranged by turning in the second rotational direction from one end on the inner side toward the other end on the outer side, each of the plurality of second upper coil units is arranged by turning in the second rotational direction from one end on the inner side toward the other end on the outer side, and each of the plurality of first upper coil units is arranged by turning in the first rotational direction from one end on the inner side toward the other end on the outer side.

[0020] Additionally, the coil pattern includes a first surface in contact with the insulating substrate and a second surface opposite to the first surface, and the second surface includes a convex curved surface extending away from the first surface.

[0021] Additionally, the coil pattern comprises a first metal layer disposed on the insulating substrate, a second metal layer disposed on the first metal layer, and a third metal layer disposed on the third metal layer, wherein the third metal layer has a thickness greater than the respective thicknesses of the first metal layer and the second metal layer.

[0022] Additionally, the insulating substrate includes a second substrate region extending from the first substrate region, and a terminal portion connected to the coil pattern is provided on the second substrate region, and the thickness of the terminal portion is different from the thickness of the coil pattern.

[0023] Additionally, the coil module for the aperture module further includes a dummy pattern disposed on the insulating substrate and spaced apart from the plurality of first coil units and the plurality of second coil units.

[0024] Meanwhile, the aperture module includes a coil module for the aperture module; a magnetic member disposed on the coil module for the aperture module; and a blade portion having a light incident aperture that varies through the interaction between the coil module for the aperture module and the magnetic member.

[0025] Additionally, the magnetic member has a ring shape and includes a plurality of unipolar magnet units arranged along the circumferential direction, and the plurality of unipolar magnet units include N-pole magnet units and S-pole magnet units arranged alternately along the circumferential direction, the number of N-pole magnet units is equal to the number of the first coil units, and the number of S-pole magnet units is equal to the number of the second coil units.

[0026] In addition, the number of N-pole magnet units, the number of first coil units, the number of S-pole magnet units, and the number of second coil units are all the same.

[0027] Additionally, the blade portion includes a plurality of blades, and the number of the plurality of blades is less than the sum of the number of N-pole magnet units and the number of S-pole magnet units or the sum of the number of the first coil units and the number of the second coil units.

[0028] Meanwhile, the lens module includes a lens barrel; a plurality of lenses arranged in the direction of the optical axis within the lens barrel; and the aperture module.

[0029] In addition, the aperture module is positioned on the plurality of lenses.

[0030] Meanwhile, the camera device includes the lens module; a lens driving device that moves the lens module in the direction of the optical axis; and an image sensor.

[0031] The coil module for the aperture module of the embodiment includes an insulating substrate and a coil pattern arranged by turning multiple times on the insulating substrate. At this time, the coil pattern includes a first coil pattern arranged by turning multiple times in a first rotational direction on the insulating substrate, and a second coil pattern arranged by turning multiple times in a second rotational direction opposite to the first rotational direction. Furthermore, the first coil pattern includes multiple first coil units, and the second coil pattern includes multiple second coil units.

[0032] At this time, a plurality of first coil units and second coil units are alternately arranged along the circumferential direction of the insulating material.

[0033] By doing so, the embodiment includes first coil units and second coil units arranged in different rotational directions as described above, thereby maximizing the Lorentz force that can be generated through a coil pattern arranged within a limited space.

[0034] That is, the embodiment provides first coil units and second coil units arranged in turns in different directions, and further arranges the first coil units and second coil units alternately along the circumferential direction. Through this, the embodiment provides a driving force for driving blades using the first coil units and second coil units. At this time, the first coil units generate a first electromagnetic force through interaction with a magnetic member. Additionally, the second coil unit generates a second electromagnetic force different from the first electromagnetic force through interaction with a magnetic member. For example, the first electromagnetic force may be an attractive force, and the second electromagnetic force may be a repulsive force. Through this, the embodiment can apply twice the electromagnetic force compared to a comparative example equipped only with first coil units by using the first coil units and second coil units, thereby enabling the blades to operate more stably.

[0035] In addition, the embodiment provides first coil units and second coil units, making it possible to reduce the number of turns, width, or spacing of each of the first coil units and second coil units, thereby lowering the difficulty of the process for manufacturing the first coil units and second coil units. Accordingly, the embodiment can simplify the process of manufacturing a coil substrate and provide ease of the manufacturing process. Furthermore, the embodiment can further improve product yield through the simplification and ease of the manufacturing process.

[0036] FIG. 1 is an enlarged cross-sectional view showing a portion of a cross-section of a camera device according to an embodiment.

[0037] FIG. 2 is a combined perspective view of an aperture module according to an embodiment.

[0038] Figure 3 is a cross-sectional view along the AA' direction of the aperture module of Figure 2.

[0039] FIGS. 4 to 6 are upper exploded perspective views of an aperture module according to an embodiment.

[0040] FIG. 7 is a top view of a coil substrate according to the first embodiment.

[0041] FIG. 8 is a lower view of a coil substrate according to the first embodiment.

[0042] FIG. 9 is a lower view of a coil substrate according to a second embodiment.

[0043] FIG. 10a is an exploded perspective view of an enlarged and exploded area of ​​FIG. 9.

[0044] FIG. 10b is a drawing for explaining the rotational operation of blades according to an embodiment.

[0045] FIG. 11 is a plan view showing one coil unit of the coil pattern illustrated in FIG. 7 to 10.

[0046] FIG. 12 is a cross-sectional view of a coil substrate cut along the BB' direction of FIG. 9.

[0047] FIGS. 13a and FIGS. 13b are cross-sectional views of a coil substrate cut along the CC' direction of FIG. 9.

[0048] FIG. 14 is a drawing showing a coil substrate according to a third embodiment.

[0049] Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the attached drawings. However, the technical concept of the present invention is not limited to some of the described embodiments but can be implemented in various different forms, and within the scope of the technical concept of the present invention, one or more of the components among the embodiments may be selectively combined or substituted.

[0050] In addition, terms used in the embodiments of the present invention (including technical and scientific terms) may be interpreted in a sense that is generally understood by those skilled in the art to which the present invention belongs, unless explicitly and specifically defined otherwise. Terms that are commonly used, such as terms defined in advance, may be interpreted in consideration of their meaning in the context of the relevant technology.

[0051] Furthermore, the terms used in the embodiments of the present invention are for describing the embodiments and are not intended to limit the present invention. In this specification, the singular form may include the plural form unless specifically stated otherwise in the text, and when described as “and at least one of B and C (or more than one),” it may include one or more of all combinations that can be formed from A, B, and C.

[0052] In addition, terms such as first, second, A, B, (a), (b), etc., may be used when describing the components of the embodiments of the present invention. These terms are used merely to distinguish the components from other components and are not intended to limit the essence, order, or sequence of the components.

[0053] And, where it is stated that a component is 'connected', 'combined', or 'joined' to another component, this may include not only cases where the component is directly connected, combined, or joined to the other component, but also cases where it is 'connected', 'combined', or 'joined' due to another component located between the component and the other component.

[0054] Additionally, where described as being formed or placed on the "top or bottom" of each component, the top or bottom includes not only cases where two components are in direct contact with each other, but also cases where one or more other components are formed or placed between the two components.

[0055] In addition, when expressed as “up” or “down,” it can include the meaning of a downward direction as well as an upward direction relative to a single component.

[0056]

[0057] Hereinafter, an aperture module according to an embodiment, and a lens module and camera device including the same, will be described as follows with reference to the attached drawings. For convenience of explanation, the aperture module according to an embodiment, and the lens module and camera device including the same, will be described using a Cartesian coordinate system (X, Y, Z), but may also be described using other coordinate systems, and the embodiment is not limited thereto. Furthermore, according to the Cartesian coordinate system, the X-axis, Y-axis, and Z-axis are orthogonal to each other, but the embodiment is not limited thereto. That is, the X-axis, Y-axis, and Z-axis may intersect each other.

[0058] In addition, the Z-axis direction, which is the optical axis direction, may be referred to as 'any one of the first to third directions', the X-axis direction may be referred to as 'another one of the first to third directions', and the Y-axis direction may be referred to as 'the remaining one of the first to third directions'. For example, the first direction may be a direction perpendicular to the imaging area of ​​the image sensor.

[0059] In addition, the X-axis (or Y-axis) may be referred to as the "first horizontal axis" and the direction of the X-axis (or Y-axis) may be referred to as the "first horizontal direction", the Y-axis (or X-axis) may be referred to as the "second horizontal axis" and the direction of the Y-axis (or X-axis) may be referred to as the "second horizontal direction".

[0060] For example, the optical axis direction may be the direction of the optical axis or a direction parallel to the optical axis. Also, for example, the optical axis may be the optical axis of a lens mounted on a lens barrel. Or, for example, the optical axis may be an axis perpendicular to the imaging area of ​​an image sensor and passing through the center of the imaging area. Also, the expression "terminal" below may be replaced with a pad, an electrode, or a conductive layer.

[0061] In addition, in the embodiment, regarding the connection between the protrusion and the hole for connecting two components to each other, one component may be a connecting protrusion (or connecting hole), and the other component may be a corresponding connecting hole (or connecting protrusion).

[0062] The camera device according to the embodiment can perform a hand image correction function and an auto-focusing function.

[0063] The 'image stabilization function' may be a function that moves the lens in a direction perpendicular to the optical axis or tilts the lens relative to the optical axis to cancel out vibrations (or movements) caused by the user's hand shake.

[0064] Additionally, the 'auto-focusing function' may be a function that automatically focuses on a subject by moving the lens along the optical axis according to the distance to the subject in order to obtain a clear image of the subject on the image sensor. Hereinafter, "camera device" may be replaced with "camera," "actuator," "camera module," "imaging device," or "shooter."

[0065]

[0066] FIG. 1 is an enlarged cross-sectional view illustrating a portion of a cross-section of a camera device according to an embodiment, FIG. 2 is an assembled perspective view of an aperture module according to an embodiment, FIG. 3 is a cross-sectional view of the aperture module of FIG. 2 along the AA' direction, FIG. 4 to 6 are exploded perspective views of an aperture module according to an embodiment, FIG. 7 is a top view of a coil substrate according to a first embodiment, FIG. 8 is a bottom view of a coil substrate according to a first embodiment, FIG. 9 is a bottom view of a coil substrate according to a second embodiment, FIG. 10a is an exploded perspective view illustrating an enlarged and exploded portion of FIG. 9, and FIG. 10b is a drawing for explaining the rotational operation of blades according to an embodiment. For example, FIG. 4 to 6 may be drawings illustrating an exploded perspective view of the aperture module shown in FIG. 2 from the top.

[0067] Hereinafter, an aperture module according to an embodiment will be schematically described with reference to FIGS. 1 to 10.

[0068] Referring to FIG. 1, the camera device (10) may include a lens module (20). Additionally, the camera device (10) may further include a lens driving device (30) positioned below the lens module (20). The lens module (20) may be coupled with the lens driving device (30). The lens driving device (30) may move the lens module (20) in the direction of the optical axis. The camera device (10) may further include a sensor unit (40) positioned below the lens driving device (30). For example, light passing through the lens module (20) may be incident on the sensor unit (40).

[0069] The lens module (20) may be replaced with "lens and aperture assembly" or "lens module (or lens part) including a variable aperture".

[0070] The lens driving device (30) can perform an auto-focusing operation. For example, the lens driving device (30) may include an "auto-focusing unit (31)" for performing an auto-focusing operation. The auto-focusing unit (31) can move the lens module (20) in the direction of the optical axis.

[0071] The lens driving device (30) may include a hand shake correction unit (32) that performs an OIS (Optical Image Stabilization) operation for hand shake correction. The hand shake correction unit (32) can move the lens module (20) in a direction perpendicular to the optical axis.

[0072] The lens module (20) may include a lens barrel (not shown), a lens portion (22), and an aperture module (21). The lens barrel may be coupled to the lens portion (22). The lens barrel may include an internal space for accommodating the lens portion (22). For example, the lens barrel may include an opening or a through hole.

[0073] The lens portion (22) may be placed within a lens barrel. The lens portion (22) may be coupled to the lens barrel. The lens portion (22) may include a plurality of lenses (22a to 22d).

[0074] Multiple lenses (22a to 22d) may be arranged or positioned sequentially in the direction of the optical axis within a lens barrel. Alternatively, the lenses (22a to 22d) may be stacked in the direction of the optical axis. In FIG. 1, the lens portion (22) includes four lenses (22a to 22d), but in other embodiments, the lens portion (22) may include two lenses, three lenses, four lenses, five lenses, or seven or more lenses.

[0075] Each of the plurality of lenses (22a to 22d) may include a coupling part (or projection) for alignment or self-alignment. In this case, the coupling part of each lens may be represented as a projection, an alignment projection, or a self-alignment projection.

[0076] The lens module (20) may further include an aperture module (21). The aperture module (21) can selectively adjust or change the amount of light incident on the camera device (10) or the amount of light incident. For example, the aperture module (21) can adjust or change the amount of light incident on the lenses (22a to 22d) of the lens part (22) placed below the aperture module (21).

[0077] In the case of FIG. 1, the aperture module (21) is shown positioned above the lens portion (22), but the embodiment is not limited thereto. The following description of the aperture module (21) may also apply when the aperture module (21) is positioned between a plurality of lenses (22a to 22d).

[0078] The aperture module (21) may include an aperture (iris) capable of varying the amount of incident light. The aperture module (21) may also be referred to as a "variable aperture module" or "variable aperture."

[0079] The aperture module (21) may largely include a fixed part and a movable part. In the aperture module (21), the "fixed part" may be an element whose position is fixed and does not move together with the movable part of the aperture module (21). Additionally, in the aperture module (21), the "movable part" may be an element that moves or rotates relative to the fixed part.

[0080] The configuration of each aperture module (21) is described in detail as follows.

[0081] Referring to FIGS. 2 to 4, the aperture module (21) may include a cover (100) for accommodating a blade portion (200). The cover (100) may be placed on the blade portion (200) or the rotor (400) and may be coupled with a stator (500).

[0082] The cover (100) may include a top plate (110) and a side plate (120) protruding downward from the outer surface of the top plate (110). The top plate (110) of the cover (100) may include an opening (101). The top (110) of the cover (100) may include an upper protruding groove (111) protruding upward and a lower protruding groove (112: 112-1, 112-2) protruding downward. The upper protruding groove (111) may correspond to the drive shaft (440) of the rotor (400). The number of upper protruding grooves (111) may correspond to the number of drive shafts (440) of the rotor (400). A straight line connecting the centers of the upper protruding grooves (111) may form a regular polygon.

[0083] The upper protruding groove (111) may be a groove with a length extended in the circumferential direction, and the length of the groove may be a length corresponding to the rotation angle of the rotor (400). As a result, even if the cover (100) does not rotate, the upper protruding groove (111) may not interfere with the rotational movement of the drive shaft (440) of the rotor (400).

[0084] The lower protruding groove (112) can come into contact with some of the plurality of blades (210) and can support the plurality of blades (210) by pressing some of the plurality of blades (210) from the upper side to keep the plurality of blades (210) horizontal.

[0085] The lower protruding groove (112) may include a first lower protruding groove (112-1) located between each of the upper protruding grooves (111) and a second lower protruding groove (112-2) located between each of the upper protruding grooves (111) closer to the opening (101) than the upper protruding groove (111).

[0086] The upper portion (110) of the cover (100) may include a hole (113) penetrating in the direction of the optical axis. The hole (113) may be coupled with part or all of the fixed shaft (530). The outer surface of the fixed shaft (530) may come into contact with the inner surface of the hole (113). By coupling the hole (113) and the fixed shaft (530), the cover (100) can be fixed together with the stator (500) without rotating or moving.

[0087] The aperture module (21) may include a blade portion (200) capable of adjusting the size of the opening into which light is incident.

[0088] The blade portion (200) may include a plurality of blades (210). The plurality of blades (210) may include upper blades (212a-212d) and lower blades (212e-212h). The blade portion (200) may include a blade separator plate (220). The blade separator plate (220) may be in the shape of a disc including an opening (221).

[0089] At this time, the upper blades (212a-212d) and the lower blades (212e-212h) can be driven in conjunction with each other. For example, the upper blade and the lower blade coupled to the same drive shaft can rotate in the same direction and distance from each other. Accordingly, the blade portion (200) may include four blades, and the four blades may each have a structure including an upper blade and a lower blade.

[0090] The blade separator (220) may include an inner hole (222) formed parallel to the optical axis direction at a constant radius from the center of the opening (221), and an outer hole (223) formed parallel to the optical axis direction at a radius longer than the radius. The inner hole (222) allows the drive shaft (440) of the rotor (400) to pass through. Accordingly, the number of inner holes (222) may be equal to the number of drive shafts (440), and the size of the holes may be large enough to encompass the entire path of the drive shafts (440) moving by the rotation of the rotor (400). The inner holes (222) may include holes of different shapes (222a, 222b).

[0091] The outer hole (233) allows the fixed shaft (530) of the stator (500) to pass through. The blade separator (220) can be fixed without rotating due to the outer hole (233) into which the fixed shaft (530) is inserted, even if the rotor (400) rotates. Even if the blade separator (220) is fixed without rotating, the drive shaft (440) passing through the inner hole (222) can rotate together with the rotor (400).

[0092] A plurality of blades (210) may include an opening (211). A plurality of blades (210) may be alternately arranged on the upper or lower side in a first rotational direction (e.g., counterclockwise) or a second rotational direction (e.g., clockwise).

[0093] A plurality of blades (210) may include drive shaft holes (213a-213h) into which the drive shaft (440) of the rotor (400) is inserted or passes, and fixed shaft holes (214a-214h) into which the fixed shaft (530) of the stator (500) is inserted or passes. The drive shaft holes (213a-213h) may be coupled or connected to the moving part of the aperture module (21), and the fixed shaft holes (214a-214h) may be coupled or connected to the fixed part of the aperture module (21).

[0094] For example, the drive shaft (440) of the rotor (400) may be provided inside the upper protruding groove (111) of the cover (100) by passing sequentially through the drive shaft holes (213e-213h) of the lower blade layer, the inner holes (222: 222a, 222b) of the blade separator plate (220), and the drive shaft holes (213a-213d) of the upper blade layer.

[0095] Additionally, the fixed shaft (530) of the stator (500) may pass sequentially through the fixed shaft holes (214e-214h) of the lower blade layer, the outer holes (223) of the blade separator plate (220), and the fixed shaft holes (214a-214d) of the upper blade layer, and part or all of the fixed shaft (530) may finally pass through or be coupled to the hole (113) of the cover (100).

[0096] With the drive shaft (440) and the fixed shaft (530) respectively fitted into the drive shaft holes (213a-213h) and the fixed shaft holes (214a-214h), the plurality of blades (210) can rotate around the fixed shaft (530).

[0097] Each of the multiple blades (210) can move. Alternatively, the multiple blades (210) can move or rotate within a preset range. The size (e.g., diameter) of the opening (211) can be varied by the movement or motion of the multiple blades (210). By controlling the movement of the blades (210), openings of different sizes can be realized.

[0098] Referring to FIG. 5, the aperture module (21) may include a support plate (310) positioned between the blade portion (200) and the rotor (400). The support plate (310) may serve to support at least a portion of the blade portion (200). The support plate (310) may have a circular opening (311). The opening (311) may be a through hole. The support plate (310) may serve to make the shape of the opening of the aperture module (21) that receives light incident from the outside circular.

[0099] The support plate (310) may include a relief portion (312) to avoid spatial interference with the fixed axis (530) of the stator (500). The relief portion (312) may be a groove that is recessed from the outer surface of the support plate (310). The fixed axis (530) of the stator (500) may pass through the relief portion (312) and be coupled to the fixed axis holes (214a-214h) of the plurality of blades (210).

[0100] The support plate (310) may include a plurality of holes (313, 314) to avoid spatial interference with the drive shaft (440) of the rotor (400). The plurality of holes may include a first hole (313) and a second hole (314), the first hole (313) may be a hole extended circumferentially around the optical axis, and the second hole (314) may be a hole extended radially.

[0101] The drive shaft (440) of the rotor (400) may include first and second extensions (441, 442), and the optical axis height of the first and second extensions (441, 442) may be lower than the height of the drive shaft (440) but higher than the body (410) of the rotor (400).

[0102] The rotor (400) can be placed inside the cover (100). The rotor (400) can be placed below the blade portion (200). The rotor (400) can be placed below the support plate (310). The rotor (400) can be placed inside the stator (500).

[0103] The rotor (400) may be rotatable. The rotor (400) may be connected to the blade portion (200), and the opening (211) of the plurality of blades (210) may be varied by the rotation of the rotor (400).

[0104] The rotor (400) may include a circular ring-shaped or disc-shaped body (410) to facilitate rotation. The body (410) may include an opening (401) in the center. The rotor (400) may include an extension (420) extending radially from the outer surface of the body (410), and may include a protrusion (430) protruding downward from the inner surface of the body (410) (e.g., the opening (401)). The protrusion (430) may face and correspond to the inner surface of a magnetic member (320) that is positioned and coupled to the lower side of the rotor (400).

[0105] The rotor (400) may include a drive shaft (440) formed by protruding or extending from the upper surface of the body (410). The drive shaft (440) may protrude or extend from the body (410) toward the blade portion (200). The drive shaft (440) may be formed integrally with the body (410). In another embodiment, the drive shaft (440) may be a structure coupled to the body (410).

[0106] The drive shaft (440) may be connected to or linked with the blade portion (200) to rotate or move the blade portion (200). The rotor (400) may include a plurality of drive shafts (440) corresponding to a plurality of blades (210). For example, the number of drive shafts (440) may be equal to the number of blades (e.g., blades forming a single blade layer). The plurality of drive shafts (440) may be spaced apart from each other.

[0107] The rotor (400) rotates together as the magnetic member (320) coupled to the lower part of the rotor (400) interacts with the coil pattern (700) and rotates. Accordingly, the drive shaft (440) formed upward from the body of the rotor (400) also rotates. The drive shaft (440) is connected to a plurality of blades (210) to move the plurality of blades (210) together simultaneously. Since the plurality of blades (210) move together simultaneously, uniform and stable movement is possible, and there is no deviation in movement between the blades (210), or the deviation in movement can be reduced. Since there is no deviation in movement between the blades, the shape of the desired opening can be easily obtained without error.

[0108] The drive shaft (440) may include a first extension (441) that extends circumferentially from the drive shaft (440) and a second extension (442) that extends radially. The height of the first extension (441) and the second extension (442) from the body (410) may be lower than the height of the drive shaft (440). The first extension (441) that extends circumferentially may be inserted or fitted into the first hole (313) of the support plate (310), and the second extension (442) that extends radially may be inserted or fitted into the second hole (314) of the support plate (310). By combining the first extension part (441) and the second extension part (442) with the first hole (313) and the second hole (314) of the support plate (310), the support plate (310) is coupled to the upper side of the rotor (400) and can rotate together with the rotor (400).

[0109] The aperture module (21) may include a magnetic member (320).

[0110] The magnetic member (320) can form a ring shape with alternating N-pole magnets (322-1) and S-pole magnets (322-2). There may be air gaps (324-1, 324-2) in the contact area between the N-pole magnets (322-1) and the S-pole magnets (322-2). The magnetic member (320) forms a ring shape with alternating 4 N-pole magnets (322-1) and 4 S-pole magnets (322-2), and forms 8 air gaps between the N-pole magnets (322-1) and the S-pole magnets (322-2).

[0111] Specifically, the magnetic member (320) may have a ring shape, and accordingly, the magnetic member (320) may be easy to rotate with respect to the optical axis. The magnetic member (320) may include an opening (321). The magnetic member (320) may include a plurality of magnet units (322). The magnet unit may be a single-polarity magnet of the N pole or S pole. In another embodiment, the magnet unit may be a two-pole magnet including the N pole and the S pole.

[0112] The number of N-pole magnet units (322-1) and S-pole magnet units (322-2) may be the same, and there may be 2, 3, or 5 or more N-pole (322-1) or S-pole magnet units (322-2). For example, the N-pole magnet units (322-1) and S-pole magnet units (322-2) may each be composed of 4 units.

[0113] The N-pole magnet unit (322-1) and the S-pole magnet unit (322-2) can be arranged alternately in the circumferential direction. For example, the parts where two adjacent magnet units come into contact with each other may have opposite polarities.

[0114] The magnetic member (320) may move or rotate within a preset range around the optical axis through interaction with the coil pattern (700). The magnetic member (320) may face or overlap with the coil pattern (700) in the direction of the optical axis. For example, the number of N-pole magnet units (322-1) (or S-pole magnet units (322-2)) may be smaller than the number of coil patterns (700). That is, the sum of the N-pole magnet units (322-1) and S-pole magnet units (322-2)) may be equal to the number of coil patterns (700).

[0115] For example, each magnet unit of the magnetic member (320) may have a symmetrical structure with respect to the coil pattern (700). For example, the N-pole magnet unit (322-1) and the S-pole magnet unit (322-2) of the magnetic member (320) may each be provided to correspond to the coil pattern (700).

[0116] Accordingly, the number of multiple magnet units of the magnetic member (320) may correspond to the number of coil units of the coil pattern (700). For example, the coil pattern (700) may include multiple upper coil units (700A) disposed on the upper surface (600S1) of the first substrate region (610) of the insulating substrate (600). Here, the number of multiple upper coil units (700A) may correspond to the number of multiple magnet units (322-1, 322-2).

[0117] At this time, the vertical positional relationship between the magnetic member (320) and the coil pattern (700) may be changed according to the embodiment. For example, the magnetic member (320) may be positioned above the coil pattern (700), and for another example, the magnetic member (320) may be positioned below the coil pattern (700).

[0118] The aperture module (21) may further include a ring-shaped support member (330). The support member (330) may be positioned between the rotor (400) and the magnetic member (320) to support the magnetic member (320) or to attach the magnetic member (320) to the rotor (400). The rotor (400) and the support member (330), and the support member (330) and the magnetic member (320) may be joined by an adhesive.

[0119] The aperture module (21) may include a rolling member (900). At least a portion of the rolling member (900) may be in contact with the rotor (400). Additionally, for example, at least another portion of the rolling member (900) may be in contact with the stator (500).

[0120] The rolling member (900) can reduce friction between the rotor (400) and the stator (500) by performing rolling or sliding motion between the rotor (400) and the stator (500), thereby facilitating the movement of the rotor (400) and reducing the driving current or power consumption required to move the rotor (400).

[0121] For example, the cloud member (900) may include two large first balls (910) and two small second balls (920).

[0122] Referring to FIG. 6, the fixed portion of the aperture module (21) may include a stator (500). The stator (500) may be located below the rotor (400), and the upper surface of the stator (500) may face or overlap with the lower surface of the rotor (400) in the direction of the optical axis. The stator (500) may include an internal space capable of accommodating at least a portion of the extension (420) and protrusion (430) of the rotor (400). The stator (500) may include an opening (not shown).

[0123] The stator (500) may include a disc-shaped body (510) that forms an opening in the center, and a side plate (520) formed protruding upward from the outer surface of the body (510). A plurality of protruding bosses (511) and a plurality of grooves (512) may be formed on the upper surface of the body (510). The plurality of protruding bosses (511) may fix components (e.g., coil pattern, fixing member (820), etc.) that constitute a fixing part disposed inside the stator (500) so that they do not rotate in the circumferential direction. The protruding bosses (511) may be in the shape of a cylinder or a polygonal prism. A plurality of sensors (800) disposed on the lower surface of the coil pattern (700) may be disposed inside the plurality of grooves (512). At least one groove or protrusion may be formed on the lower surface of the body (510) to allow the aperture module (21) to be attached to or supported by the lens module (20).

[0124] The outer surface of the side plate (520) may include a first surface (521) and a second surface (522) that differ in radius from the center of the opening (501), i.e., have a step. For example, the radius of the first surface (521) may be smaller than the radius of the second surface (522). The first surface (521) may be located above the second surface (522), and the first surface (521) may be placed inside the cover (100). The first surface (521) may be opposite to or coupled with the inner surface of the side plate (120) of the cover (100). Additionally, the diameter of the outer surface of the side plate of the cover (100) may be equal to or larger than the diameter of the second surface (522).

[0125] The body (510) of the stator (500) may include a fixed shaft (530) formed by protruding from the upper surface of the body (510). The fixed shaft (530) may be inserted or fitted into the fixed shaft holes (214a-214h) of a plurality of blades by passing between the extensions (420) of the rotor (400) or through the relief portion (312) of the support plate (310).

[0126] Additionally, at least one groove may be provided to allow the aperture module (21) of the body (510) to be attached to or supported by the lens module (20). Additionally, a reinforcing member (830) may be inserted into a groove provided on the lower surface of the body (510). The reinforcing member (830) may be a member that reinforces the rigidity of the aperture module (21), and this may be optionally omitted.

[0127] Referring to FIG. 7, the aperture module (21) may include a coil substrate coupled to the stator (500). Here, the coil substrate may be a circuit board. For example, the coil substrate may refer to a coil module for the aperture module. That is, the coil substrate may interact with the magnetic member (320) to provide a driving force (e.g., Lorentz force) to rotate the blade portion (200).

[0128] The coil substrate may include an insulating substrate (600) and a coil pattern (700) disposed on the insulating substrate (600).

[0129] The insulating material (600) can be represented as an insulating layer, base, insulating substrate, and insulating member on which the coil pattern (700) is placed.

[0130] The insulating material (600) can be placed inside the stator (500) below the blade portion (200) and the rotor (400).

[0131] The insulating substrate (600) may include a flexible material. For example, the insulating substrate (600) may include polyimide (PI). However, the embodiments are not limited thereto. The insulating substrate (600) may include a polymeric material such as polyethylene terephthalate (PET) or polyethylene naphthalate (PEN).

[0132] The insulating substrate (600) may have a thickness of 20 µm to 100 µm. For example, the insulating substrate (600) may have a thickness of 25 µm to 50 µm. For example, the insulating substrate (600) may have a thickness of 30 µm to 40 µm.

[0133] If the thickness of the insulating substrate (600) exceeds 100 μm, the thickness of the coil substrate increases. Consequently, the flexible properties of the coil substrate may be degraded. If the thickness of the insulating substrate (600) is less than 20 μm, it may be difficult to stably place the coil pattern (700) on the insulating substrate (600). Accordingly, the coil substrate may be damaged during the process of placing the coil pattern (700). As described above, the insulating substrate (600) is made of a polyimide material and can be bent or folded, but the embodiment is not limited to a specific material of the coil substrate.

[0134] The insulating substrate (600) is divided into a plurality of regions. The insulating substrate (600) may include a first substrate region (610) on which a coil pattern (700) is placed. Additionally, the insulating substrate (600) may include a second substrate region (620) on which a terminal portion (630) is placed.

[0135] At this time, the drawing shows that the terminal portion (630) is placed in the second substrate area (620), but it is not limited thereto.

[0136] For example, a terminal portion (not shown) may also be disposed in the first substrate area (610) of the insulating substrate (600). The terminal portion (not shown) provided in the first substrate area (610) may have sensor terminals to which a position sensor (e.g., a Hall sensor) is coupled, and / or a power terminal connected to an external power source, etc.

[0137] Additionally, a terminal portion (630) may be disposed in the second substrate area (620) of the insulating substrate (600). At this time, the terminal portion (not shown) provided in the first substrate area (610) and the terminal portion (630) provided in the second substrate area (620) may be electrically connected through a circuit pattern (not shown) disposed on the insulating substrate (600).

[0138] The first substrate region (610) of the insulating substrate (600) may be ring-shaped, including an opening (611). The opening (611) of the first substrate region (610) may be in the form of a hollow or through hole. The opening (611) of the first substrate region (610) may penetrate the insulating substrate (600) in the direction of the optical axis. The opening (611) may correspond to, oppose, or overlap with the opening of the lens portion (22) or the cover (100) in the direction of the optical axis. The opening (611) of the first substrate region (610) may be expressed as a "hollow," "incident opening," or "incident hole."

[0139] The outer surface of the first substrate area (610) includes an extension (612) that extends in a radial direction. The shape of the extension (612) may correspond to the shape of a coil pattern (700) placed on the first substrate area (610). Additionally, the number of extensions (612) provided in the first substrate area (610) may correspond to the number of coil patterns (700). For example, there may be eight coil patterns (700), and accordingly, the first substrate area (610) may be provided with eight extensions (612) spaced apart from each other along the circumferential direction.

[0140] Additionally, a plurality of grooves (not shown) may be formed on the inner surface of the first substrate area (610), and a plurality of protruding bosses (511) of the stator (500) may be coupled to or fitted into the plurality of grooves provided in the first substrate area (610). The plurality of grooves provided in the first substrate area (610) may be grooves in which the inner surface of the first substrate area (610) is recessed, or holes penetrating in a direction parallel to the optical axis near the inner surface of the first substrate area (610).

[0141] At this time, a fixing groove may be provided between a plurality of extension portions (612) of the first substrate area (610). Here, the fixing groove may refer to an area on the outer surface of the first substrate area (610) where no extension portions (612) are provided. The fixing groove corresponding to the portion of the first substrate area (610) where no extension portions (612) are provided may be coupled to the stator (500).

[0142] Through this, the insulating material (600) can be fixed without being rotated in the circumferential direction while placed on the stator (500). At this time, a fixing member (820) can be placed between the insulating material (600) and the stator (500) to bond the insulating material (600) and the stator (500). At this time, as described above, the fixing member (820) may have a plurality of grooves (821) into which a protruding boss (511) can be fitted. The plurality of grooves (821) may be grooves in which the inner surface of the fixing member (820) is recessed, or holes penetrating in a direction parallel to the optical axis near the inner surface of the fixing member (820). The fixing member (820) may be composed of a pair having the same shape that can be completely overlapped. A pair of fixed members (820) may correspond to the shape of the upper surface of the body (510) of the stator (500), and a groove (512) of the stator (500) may be placed between the pair of fixed members (820).

[0143] A coil pattern (700) may be disposed on an extension (612) of a first substrate region (610) of an insulating substrate (600). At this time, the coil pattern (700) may be disposed on either the upper surface (600S1) of the first substrate region (610) or the lower surface (600S2) of the first substrate region (610).

[0144] In one embodiment, the coil substrate may be a single-sided coil substrate in which the coil pattern (700) is placed only on either the upper surface (600S1) or the lower surface (600S2) of the first substrate region (610) of the insulating substrate (600), as shown in FIGS. 7 and 8.

[0145] In another embodiment, the coil substrate may be a double-sided coil substrate in which a coil pattern (700) is respectively disposed on the upper surface (600S1) and lower surface (600S2) of the first substrate region (610) of the insulating substrate (600), as shown in FIGS. 7 and 9.

[0146] For example, when the coil substrate is a single-sided coil substrate, an upper coil unit (700A) of the coil pattern (700) illustrated in FIG. 7 may be disposed on the upper surface (600S1) of the first substrate region (610) of the insulating substrate (600), and a connection pattern (740) illustrated in FIG. 8 may be provided on the lower surface (600S2) of the first substrate region (610) of the insulating substrate (600). That is, the coil pattern (700) may include a plurality of upper coil units (700A) disposed on the upper surface (600S1) of the first substrate region (610) of the insulating substrate (600). In this case, a plurality of via electrodes (730) may be disposed on the first substrate region (610) of the insulating substrate (600), and a plurality of connection patterns (740) may be disposed on the lower surface (600S2) of the first substrate region (610). Accordingly, a plurality of upper coil units (700A) disposed on the upper surface (600S1) of the first substrate area (610) can be electrically connected to each other through via electrodes (730) and connection patterns (740). For example, a plurality of upper coil units (700A) can be connected in series with each other.

[0147] Additionally, if the coil substrate is a double-sided coil substrate, a plurality of upper coil units (700A) as shown in FIG. 7 may be provided on the upper surface (600S1) of the first substrate region (610) of the insulating substrate (600), and a plurality of lower coil units (700B) may be disposed on the lower surface (600S2) of the first substrate region (610). Furthermore, the upper coil units (700A) and the lower coil units (700B) may be electrically connected to each other through via electrodes (730). For example, the upper coil units (700A) and the lower coil units (700B) may be connected in series through via electrodes (730).

[0148] At this time, if the coil substrate is provided as a double-sided coil substrate, the driving force (e.g., Lorentz force) generated within a limited space can be maximized, thereby allowing the blades (210) to be moved more stably. Additionally, the time required to move the blades (210) to a target position can be minimized. For example, the movement speed of the blades (210) can be improved.

[0149] The coil pattern (700) placed on the insulating substrate (600) is described in detail as follows.

[0150] First, a coil pattern (700) according to the first embodiment will be described.

[0151] Specifically, referring to FIGS. 7 and 8, the coil pattern (700) of the first embodiment may have a plurality of coil units disposed on only one side of the first substrate region (610) of the insulating substrate (600). For example, the coil pattern (700) of the first embodiment may be composed of an upper coil unit (700A) disposed on the upper surface (600S1) of the first substrate region (610) of the insulating substrate (600).

[0152] At this time, a first coil pattern (700-1) and a second coil pattern (700-2) may be included, distinguished according to the turn direction or rotation direction of the coil pattern (700). At this time, the first coil pattern (700-1) and the second coil pattern (700-2) in the first embodiment may be provided only as an upper coil unit (700A). As will be explained below, the first coil pattern (700-1) and the second coil pattern (700-2) in the second embodiment may include an upper coil unit (700A) and a lower coil unit (700B).

[0153] A coil pattern (700) may be placed on the upper surface (600S1) of a first substrate area (610) of an insulating substrate (600). The upper coil unit (700A) of the coil pattern (700) may include a first upper coil unit (710) and a second upper coil unit (720) arranged in turns in different rotational directions. In this case, the first upper coil unit (710) and the second upper coil unit (720) may be an upper coil pattern placed on the upper surface (600S1) of the first substrate area (610).

[0154] The first upper coil unit (710) can be arranged by turning in a first rotational direction on the first substrate area (610) of the insulating substrate (600). That is, the first upper coil unit (710) has a hollow in the center and can be arranged by turning in a first rotational direction with respect to the hollow. For example, the first upper coil unit (710) may include an inner end and an outer end. Also, the first upper coil unit (710) can be arranged by turning multiple times in the first rotational direction from an inner end to an outer end.

[0155] For example, the first upper coil unit (710) may be arranged in a counterclockwise turn on the first substrate area (610) of the insulating substrate (600). Here, the rotation direction may mean a rotation direction from one end of the inner side provided in the hollow of the first upper coil unit (710) toward the other end of the first upper coil unit (710).

[0156] The second upper coil unit (720) may be arranged in a second rotation direction opposite to the first rotation direction on the first substrate area (610) of the insulating substrate (600). For example, the second upper coil unit (720) may be arranged in a clockwise direction on the first substrate area (610) of the insulating substrate (600).

[0157] That is, the second upper coil unit (720) has a hollow in the center and can be arranged by turning in a second rotational direction based on the hollow. For example, the second upper coil unit (720) may include an inner end and an outer end. Also, the second upper coil unit (720) can be arranged by turning multiple times in the second rotational direction from the inner end to the outer end. For example, the second upper coil unit (720) can be arranged by turning multiple times in a clockwise direction on the first substrate area (610) of the insulating substrate (600). Here, the rotational direction may refer to a rotational direction from the inner end provided in the hollow of the second upper coil unit (720) toward the other end of the second upper coil unit (720).

[0158] The first upper coil unit (710) may include a plurality of first upper coil units (711, 712, 713, 714). Each of the plurality of first upper coil units (711, 712, 713, 714) may be placed on the upper surface (600S1) of the first substrate area (610) of the insulating substrate (600) while turning a plurality of times in a first rotational direction or counterclockwise direction from one end of the inner side toward the other end of the outer side.

[0159] The second upper coil unit (720) may include a plurality of second upper coil units (721, 722, 723, 724). Each of the plurality of second upper coil units (721, 722, 723, 724) may be placed on the upper surface (600S1) of the first substrate area (610) of the insulating substrate (600) while turning in a second rotational direction or clockwise from one end of the inner side toward the other end of the outer side.

[0160] At this time, the first upper coil unit (710) and the second upper coil unit (720) may be spaced apart at equal intervals in the circumferential direction on the upper surface (600S1) of the first substrate area (610) of the insulating substrate (600).

[0161] Each of the plurality of first upper coil units (711, 712, 713, 714) may be positioned between adjacent second coil units among the plurality of second upper coil units (721, 722, 723, 724). Additionally, each of the plurality of second upper coil units (721, 722, 723, 724) may be positioned between adjacent first coil units among the plurality of first upper coil units (711, 712, 713, 714).

[0162] For example, a plurality of first upper coil units (711, 712, 713, 714) and a plurality of second upper coil units (721, 722, 723, 724) may be alternately arranged along the circumferential direction on the upper surface (600S1) of the first substrate area (610).

[0163] Also, the spacing between adjacent upper coil units can be equal along the circumferential direction.

[0164] A plurality of first upper coil units (711, 712, 713, 714) may include a first-1 upper coil unit (711), a first-2 upper coil unit (712), a first-3 upper coil unit (714), and a first-4 upper coil unit (714) arranged sequentially along the circumferential direction.

[0165] A plurality of second upper coil units (721, 722, 723, 724) may include a second-1 upper coil unit (721), a second-2 upper coil unit (722), a second-3 upper coil unit (724), and a second-4 upper coil unit (724) arranged sequentially along the circumferential direction.

[0166] A second-1 upper coil unit (721) may be disposed between the first-1 upper coil unit (711) and the first-2 upper coil unit (712). Additionally, a second-2 upper coil unit (722) may be disposed between the first-2 upper coil unit (712) and the first-3 upper coil unit (713). Furthermore, a second-3 upper coil unit (723) may be disposed between the first-3 upper coil unit (713) and the first-4 upper coil unit (714). Additionally, a second-4 upper coil unit (724) may be disposed between the first-1 upper coil unit (711) and the first-4 upper coil unit (714).

[0167] That is, the coil pattern (700) can be arranged in the order of a first-1 upper coil unit (711), a second-1 upper coil unit (721), a first-2 upper coil unit (712), a second-2 upper coil unit (722), a first-3 upper coil unit (713), a second-3 upper coil unit (723), a first-4 upper coil unit (714) and a second-4 upper coil unit (724) along the circumferential direction on the first substrate area (610) of the insulating substrate (600).

[0168] Additionally, the coil pattern (700) of the first embodiment may further include via electrodes (730) and a connection pattern (740). The via electrodes (730) and the connection pattern (740) may electrically connect the first-1 upper coil unit (711), the second-1 upper coil unit (721), the first-2 upper coil unit (712), the second-2 upper coil unit (722), the first-3 upper coil unit (713), the second-3 upper coil unit (723), the first-4 upper coil unit (714), and the second-4 upper coil unit (724). For example, the via electrode (730) and connection pattern (740) can electrically connect the first-1 upper coil unit (711), the second-1 upper coil unit (721), the first-2 upper coil unit (712), the second-2 upper coil unit (722), the first-3 upper coil unit (713), the second-3 upper coil unit (723), the first-4 upper coil unit (714) and the second-4 upper coil unit (724) in series.

[0169] That is, the via electrode (730) and the connection pattern (740) can connect the first-1 upper coil unit (711) and the second-1 upper coil unit (721) in series. Additionally, the via electrode (730) and the connection pattern (740) can connect the second-1 upper coil unit (721) and the first-2 upper coil unit (712) in series. Additionally, the via electrode (730) and the connection pattern (740) can connect the first-2 upper coil unit (712) and the second-2 upper coil unit (722) in series. Additionally, the via electrode (730) and the connection pattern (740) can connect the second-2 upper coil unit (722) and the first-3 upper coil unit (713) in series. Additionally, the via electrode (730) and the connection pattern (740) can connect the first-third upper coil unit (712) and the second-third upper coil unit (723) in series. Additionally, the via electrode (730) and the connection pattern (740) can connect the second-third upper coil unit (723) and the first-fourth upper coil unit (714) in series. Additionally, the via electrode (730) and the connection pattern (740) can connect the first-fourth upper coil unit (714) and the second-fourth upper coil unit (724) in series. Furthermore, one end of the first-first upper coil unit (711) can be connected to the input terminal (T1) of the terminal section (630), and the other end of the second-fourth upper coil unit (724) can be connected to the output terminal (T2) of the terminal section (630).

[0170] As described above, the embodiment includes a first upper coil unit (710) and a second upper coil unit (720) arranged in turns in different rotational directions. The first upper coil unit (710) includes a plurality of first upper coil units (711, 712, 713, 714). Additionally, the second upper coil unit (720) includes a plurality of second upper coil units (721, 722, 723, 724). The plurality of first upper coil units (711, 712, 713, 714) and the plurality of second upper coil units (721, 722, 723, 724) are arranged alternately along the circumferential direction.

[0171] By doing so, the embodiment includes a first upper coil unit (710) and a second upper coil unit (720) arranged in different rotational directions as described above, thereby maximizing the Lorentz force that can be generated through the coil pattern (700) arranged within a limited space.

[0172] That is, according to the comparative example, the coil pattern (700) includes only the first upper coil unit (710). In this case, in order to increase the Lorentz force within a limited space, the number of turns of the first upper coil unit (710) must be increased, or the width and / or spacing of the first upper coil unit (710) must be reduced. At this time, there is a limit to increasing the number of turns of the first upper coil unit (710), and furthermore, there is a limit to reducing the width and / or spacing of the first upper coil unit (710). As a result, there may be insufficient Lorentz force to stably drive the blades (210), making it difficult for the blades (210) to operate stably. Furthermore, the size and / or weight of the blades (210) are increasing. Additionally, it is required to operate the blades (210) to a desired state at a faster speed. The comparative example has a limit to increasing the Lorentz force.

[0173] Accordingly, the embodiment provides a first upper coil unit (710) and a second upper coil unit (720) arranged in turns in different directions, and further, the first upper coil unit (710) and the second upper coil unit (720) are arranged alternately along the circumferential direction. Through this, the embodiment provides a driving force for driving blades (210) using the first upper coil unit (710) and the second upper coil unit (720). At this time, the first upper coil unit (710) generates a first electromagnetic force through interaction with a magnetic member (320). Additionally, the second upper coil unit (720) generates a second electromagnetic force different from the first electromagnetic force through interaction with a magnetic member (320). For example, the first electromagnetic force may be an attractive force, and the second electromagnetic force may be a repulsive force. Through this, the embodiment can apply twice the electromagnetic force compared to the comparative example having only the first upper coil unit (710) by using the first upper coil unit (710) and the second upper coil unit (720), and accordingly, the blades (210) can operate more stably.

[0174] Additionally, the embodiment provides a first upper coil unit (710) and a second upper coil unit (720), making it possible to reduce the number of turns, width, or spacing of each of the first upper coil unit (710) and the second upper coil unit (720), thereby lowering the difficulty of the process for manufacturing the first upper coil unit (710) and the second upper coil unit (720). Accordingly, the embodiment can simplify the process of manufacturing a coil substrate and provide ease of the manufacturing process. Furthermore, the embodiment can further improve the product yield through the simplification and ease of the manufacturing process.

[0175]

[0176] Meanwhile, in the embodiment of FIG. 8, the first upper coil unit (710) and the second upper coil unit (720) are shown and described as being electrically connected to each other through via electrodes (730) and connection patterns (740), but are not limited thereto.

[0177] For example, the first upper coil unit (710) and the second upper coil unit (720) may not be electrically connected to each other. That is, the first upper coil unit (710) and the second upper coil unit (720) may be individually driven.

[0178] To this end, the via electrodes (730) and the connection pattern (740) may include a first group of via electrodes, a first group of connection patterns, a second group of via electrodes, and a second group of connection patterns.

[0179] Additionally, the via electrodes of the first group and the connection pattern of the first group can electrically connect the first upper coil unit (710). For example, the via electrodes of the first group and the connection pattern of the first group can electrically connect the first-1 upper coil unit (711), the first-2 upper coil unit (712), the first-3 upper coil unit (713), and the first-4 upper coil unit (714). For example, the via electrodes of the first group and the connection pattern of the first group can connect the first-1 upper coil unit (711), the first-2 upper coil unit (712), the first-3 upper coil unit (713), and the first-4 upper coil unit (714) in series.

[0180] Additionally, the via electrode of the second group and the connection pattern of the second group may not be electrically connected to the via electrode of the first group and the connection pattern of the first group. That is, the via electrode of the second group and the connection pattern of the second group may not be electrically connected to the first-1 upper coil unit (711), the first-2 upper coil unit (712), the first-3 upper coil unit (713), and the first-4 upper coil unit (714). And, the via electrode of the second group and the connection pattern of the second group may be electrically connected to the second-1 upper coil unit (721), the second-2 upper coil unit (722), the second-3 upper coil unit (723), and the second-4 upper coil unit (724). For example, the via electrodes of the second group and the connection pattern of the second group can connect the second-1 upper coil unit (721), the second-2 upper coil unit (722), the second-3 upper coil unit (723), and the second-4 upper coil unit (724) in series.

[0181] Through this, the first upper coil unit (710) and the second upper coil unit (720) can be provided in a state where they are electrically separated from each other. Accordingly, the embodiment can drive the first upper coil unit (710) and the second upper coil unit (720) individually, thereby further improving driving reliability.

[0182]

[0183] Meanwhile, the coil pattern (700) according to the second embodiment includes the first upper coil unit (710) and the second upper coil unit (720) of the upper coil unit (700A) described above, and may further include the lower coil unit (700B) shown in FIG. 9.

[0184] Referring to FIG. 9, according to the second embodiment, the coil pattern (700) can be disposed on the upper surface (600S1) and lower surface (600S2) of the first substrate area (610) of the insulating substrate (600), respectively.

[0185] Additionally, referring to FIG. 9, the coil pattern (700) may further include a lower coil unit (700B) disposed on the lower surface (600S2) of the first substrate area (610). In this case, the lower coil unit (700B) includes a first lower coil unit (750) corresponding to the first upper coil unit (710). Additionally, the lower coil unit (700B) includes a second lower coil unit (760) corresponding to the second upper coil unit (720).

[0186] For example, the first lower coil unit (750) may include a plurality of first lower coil units (751, 752, 753, 754).

[0187] Specifically, the first lower coil unit (750) may include a first-1 lower coil unit (751) that overlaps or corresponds to the first-1 upper coil unit (711) in the optical axis direction or thickness direction. Additionally, the first lower coil unit (750) may include a first-2 lower coil unit (752) that overlaps or corresponds to the first-2 upper coil unit (712) in the optical axis direction or thickness direction. Additionally, the first lower coil unit (750) may include a first-3 lower coil unit (753) that overlaps or corresponds to the first-3 upper coil unit (713) in the optical axis direction or thickness direction. Furthermore, the first lower coil unit (750) may include a first-4 lower coil unit (754) that overlaps or corresponds to the first-4 upper coil unit (714) in the optical axis direction or thickness direction.

[0188] At this time, the first upper coil unit (710) and the first lower coil unit (750), which are superimposed in the optical axis direction or thickness direction, may be arranged by turning multiple times in a specific rotation direction so that current can flow in the same direction. At this time, current can flow from one end on the inner side to the other end on the outer side of the first upper coil unit (710). And, current can flow from the other end on the outer side to one end on the inner side of the first lower coil unit (750). Accordingly, the first upper coil unit (710) and the first lower coil unit (750) may be provided by turning multiple times in different rotation directions.

[0189] For example, as described above, each of the first-1 to first-4 upper coil units (711, 712, 713, 714) of the first upper coil unit (710) may be arranged to turn in a first rotational direction or counterclockwise from one end on the inside toward the other end on the outside. And, each of the first-1 to first-4 lower coil units (751, 752, 753, 754) of the first lower coil unit (750) may be arranged to turn in a second rotational direction or clockwise from one end on the inside toward the other end on the outside.

[0190] Additionally, the lower coil unit (700B) includes a second lower coil unit (760) corresponding to the second upper coil unit (720). Additionally, the second lower coil unit (760) may include a plurality of second lower coil units (761, 762, 763, 764).

[0191] Specifically, the second lower coil unit (760) may include a second-1 lower coil unit (761) that overlaps or corresponds to the second-1 upper coil unit (721) in the optical axis direction or thickness direction. Additionally, the second lower coil unit (760) may include a second-2 lower coil unit (762) that overlaps or corresponds to the second-2 upper coil unit (722) in the optical axis direction or thickness direction. Additionally, the second lower coil unit (760) may include a second-3 lower coil unit (763) that overlaps or corresponds to the second-3 upper coil unit (723) in the optical axis direction or thickness direction. Furthermore, the second lower coil unit (760) may include a second-4 lower coil unit (764) that overlaps or corresponds to the second-4 upper coil unit (724) in the optical axis direction or thickness direction.

[0192] At this time, the second upper coil unit (720) and the second lower coil unit (760), which are superimposed in the optical axis direction or thickness direction, may be arranged by turning multiple times in a specific rotation direction so that current can flow in the same direction. At this time, current can flow from one end on the inner side to the other end on the outer side of the second upper coil unit (720). And, current can flow from the other end on the outer side to one end on the inner side of the second lower coil unit (760). Accordingly, the second upper coil unit (720) and the second lower coil unit (760) may be provided by turning multiple times in different rotation directions.

[0193] For example, as described above, each of the 2-1 to 2-4 upper coil units (721, 722, 723, 724) of the second upper coil unit (720) may be arranged to turn in a second rotational direction or clockwise from one end on the inner side toward the other end on the outer side. And, each of the 2-1 to 2-4 lower coil units (761, 762, 763, 764) of the second lower coil unit (760) may be arranged to turn in a first rotational direction or counterclockwise from one end on the inner side toward the other end on the outer side.

[0194] Referring to FIG. 10a, the connection structure of the upper coil unit (700A) and the lower coil unit (700B) is described in detail as follows.

[0195] The upper coil unit (700A, one of the first upper coil units (710) of FIG. 7) may be made of a plurality of turns to rotate counterclockwise from one end on the inner side to the other end on the outer side.

[0196] Additionally, the lower coil unit (700B, one of the first lower coil units (750) of FIG. 7) may have a rotating pattern such that the current flows in the same direction as the pattern of each overlapping upper coil unit (700A). The direction of the current flowing in each pattern of the lower coil unit (700B) and the direction of the current flowing in each corresponding pattern of the upper coil unit (700A) must be the same so that the force rotating the magnetic member (320) is not canceled out. Through the upper coil unit (700A) and the lower coil unit (700B), the magnetic member (320) can be rotated with a greater force than when only the upper coil unit (700A) is present. Specifically, the lower coil unit (700B) may be arranged to turn in the opposite direction to the upper coil unit (700A). For example, the lower coil unit (700B) may be made up of multiple turns to rotate clockwise from one end on the inside toward the other end on the outside.

[0197] Additionally, an upper coil unit (700A) and a lower coil unit (700B) that overlap each other in a direction parallel to the optical axis direction can be connected through a via electrode (730). A portion of the via electrode (730) may be located within a hollow, and a portion may be located at the point where the outermost turn of the pattern ends. The via electrode (730) may pass through a via hole (614) of an insulating substrate (600), and the via hole (614) may be 15 μm to 30 μm, preferably 25 μm.

[0198] The size of the hollow of the pattern can be determined by considering the maximum processable size, the size of the via electrode (730) and via hole (614) inside the hollow, and a resistance value proportional to the number of turns. For example, a terminal portion (630) disposed on the lower surface of the second substrate area (620) of the insulating substrate (600) may include input / output terminals (T1, T2) of the coil pattern (700). A circuit starting from the input (T1) or output terminal (T2) of the coil pattern (700) may be located on the upper surface of the insulating substrate (600) through the via electrode (730).

[0199] Meanwhile, in another embodiment, the coil units may be connected in parallel, and a driving signal may be supplied to the coil units connected in parallel. In another embodiment, the plurality of coil units may be independent and not connected to each other, and the insulating material (600) may supply an individual independent driving signal to each of the plurality of coil units. For example, each of the plurality of coil units may be driven independently by an individual driving signal. For example, only the upper coil units and lower coil units that correspond to each other may be electrically connected to each other, and the upper coil units and lower coil units that do not correspond to each other may not be electrically connected to each other.

[0200] According to the second embodiment described above, the coil pattern (700) includes a first coil pattern (700-1) and a second coil pattern (700-2) comprising an upper coil unit (700A) and a lower coil unit (700B), which can be placed on the upper surface (600S1) and lower surface (600S2) of the first substrate area (610) of the insulating substrate (600). Accordingly, when coil units are placed on both sides of the insulating substrate (600), the magnetic member (320) can be rotated with greater force than when the coil pattern (700) is placed on a single surface. Through this, the blades (210) can be driven more stably, and furthermore, the driving speed of the blades (210) can be further improved.

[0201] At this time, the coil units of each coil pattern can be spaced apart from each other at a constant interval (e.g., 45 degrees).

[0202] Specifically, the upper coil unit (700A) may be composed of four first upper coil units (710) and four second upper coil units (720). Additionally, the lower coil unit (700B) may be composed of four first lower coil units (750) and four second lower coil units (760). That is, the number of upper coil units (700A) and lower coil units (700B) may be equal to each other. For example, each of the upper coil unit (700A) and lower coil unit (700B) may be composed of eight. This may mean that the number of unipolar magnet units constituting the magnetic member (320), the number of upper coil units (700A), and the number of lower coil units (700B) are equal to each other. That is, the magnet unit of the magnetic member (320) is a unipolar magnet unit, and accordingly, the number of unipolar magnet units of the magnetic member (320) may mean the sum of the number of N-pole magnet units and S-pole magnet units. Through this, the embodiment can drive the blades (210) more stably and further improve the driving speed of the blades (210).

[0203] Accordingly, the upper coil unit (700A) and the lower coil unit (700B) of the coil pattern (700) may each have a symmetrical structure with respect to the unipolar magnet unit of the magnetic member (320). For example, the upper coil unit (700A) and the lower coil unit (700B) may each be arranged symmetrically in a 1:1 ratio with respect to the unipolar magnet unit in the optical axis direction and / or thickness direction.

[0204] Additionally, the number of blades (210) may be smaller than the number of unipolar magnet units of the magnetic member (320). Additionally, the number of blades (210) may be smaller than the number of upper coil units (700A) and lower coil units (700B) disposed in the first substrate area (610) of the insulating substrate (600). Accordingly, the embodiment can drive the blades (210) more stably and further improve the driving speed of the blades (210).

[0205] Meanwhile, each of the multiple coil units described above may have a pattern consisting of a single layer. Unlike a wound coil, the pattern coil may be formed to have a thin film form with a fine pattern of copper. The pattern coil may include a hollow and may consist of multiple turns that rotate such that the distance from the hollow changes continuously around the hollow. The coil pattern (700) formed with such a pattern can perform the same function as a wound coil formed by winding copper wire, even though it is a single layer, through multiple turns in which the distance from the hollow continuously decreases or increases. The pattern coil is thinner than the wound coil, enabling miniaturization.

[0206] For example, the coil pattern (700) may consist of multiple turns. For example, the multiple turns may have a shape that rotates while repeatedly extending in the radial and circumferential directions around a hollow center. A portion of the pattern extending in the radial direction may allow a current perpendicular to the magnetic force to flow, thereby maximizing the interaction between the coil pattern (700) and the magnetic member (320) and increasing efficiency.

[0207] Accordingly, when a driving signal is supplied to the coil pattern (700), the moving part (e.g., magnetic member (320)) can rotate around the optical axis by means of the electromagnetic force resulting from the interaction between the magnetic member (320) and the coil pattern (700). As the moving part (magnetic member (320)) rotates, a plurality of blades (210) linked to the driving shaft (440) (or a plurality of blades (210) into which the driving shaft (440) is inserted) can rotate within a preset range around the fixed axis (530) of the stator (500). As the blades rotate, the size of the light incident aperture can be changed stepwise or continuously.

[0208] Meanwhile, a position sensor (811, 812) may be disposed on the upper surface (600S1) or lower surface (600S2) of the first substrate area (610). In this case, a sensor terminal (not shown) connected to the position sensor (811, 812) may be provided on the lower surface (600S2) of the first substrate area (610).

[0209] For example, two position sensors (811, 812) may be disposed on the lower surface (600S2) of the first substrate area (610). The two position sensors (811, 812) may be electrically connected to a terminal section (630) provided in the second substrate area (620). In this case, the terminal section (630) may include terminals connected to the position sensors (811, 812). In this case, the terminal section (630) may include an input terminal and an output terminal connected to the position sensors (811, 812), respectively. For example, the terminal section (630) may include a first input terminal (T3) and a first output terminal (T4) connected to the first position sensor (811). Additionally, the terminal section (630) may include a second input terminal (T5) and a second output terminal (T6) connected to the second position sensor (812).

[0210] That is, a terminal portion (630) electrically connected to a configuration disposed in the first substrate portion (610) is disposed in the second substrate area (620). For example, the terminal portion (630) may include terminals that can be electrically connected to an external element or external device.

[0211] The terminal section (630) may include a plurality of terminals (T1 to T6), and the plurality of terminals (T1 to T6) may include an input terminal (T1) of a coil pattern (700) and an output terminal (T2) of a coil pattern (700) that supply power to a coil pattern (700) disposed in the first substrate area (610). Additionally, the terminal section (630) may include input terminals (T3, T5) of a first position sensor (811) and a second position sensor (812), and output terminals (T4, T6) of the first position sensor (811) and the second position sensor (812). At this time, the terminal section (630) may be disposed on the lower surface (600S2) of the second substrate area (620).

[0212] The input terminal (T1) of the terminal section (630) is connected to one end of a coil pattern (700) comprising a plurality of coil patterns connected in series, and the other end of the coil pattern (700) can be connected to the output terminal (T2) of the terminal section (630).

[0213] At this time, the second substrate area (620) can penetrate the stator (500). After passing through the stator (500), the second substrate area (620) is folded first, and after being arranged vertically along the side of the aperture module (21) and lens module, it is folded second and can be connected to the power terminal portion, etc., within the camera device.

[0214] Also, referring to FIG. 10b, the operation of the blades (210) according to the operation of the coil pattern (700) and the magnetic member (320) is described as follows.

[0215] Referring to FIG. 10b, the coil pattern (700) includes a first upper coil unit (710) and a second upper coil unit (720). Additionally, an N-pole magnet (322-1) and an S-pole magnet (322-2) are disposed on the first upper coil unit (710) and the second upper coil unit (720), respectively.

[0216] At this time, current may be applied to the first upper coil unit (710) and the second upper coil unit (720). In this case, current is applied to the first upper coil unit (710) in a direction corresponding to the rotational direction of the first upper coil unit (710), and current is applied to the second upper coil unit (720) in a direction corresponding to the rotational direction of the second upper coil unit (720), and these may be opposite directions.

[0217] Accordingly, an attractive force (R1) acts between the first upper coil unit (710) and the N-pole magnet (322-1), and a repulsive force (R2) can act between the first upper coil unit (710) and the S-pole magnet (322-2).

[0218] Additionally, a repulsive force (R3) may act between the second upper coil unit (720) and the N-pole magnet (322-1), and an attractive force (R4) may act between the second upper coil unit (720) and the S-pole magnet (322-2).

[0219] Through this, the magnetic member (320) can rotate to the right (substantially counterclockwise) in the drawing. Through this, the blades (210) can also rotate together with the magnetic member (320).

[0220] Additionally, if the blades (210) are to be rotated clockwise, the direction of the current applied to the first upper coil unit (710) and the second upper coil unit (720) can be applied in the opposite direction.

[0221]

[0222] Below, various variations of the coil module for the aperture module of the embodiment are described.

[0223] FIG. 11 is a plan view showing one coil unit of the coil pattern illustrated in FIG. 7 to 10. For example, FIG. 11 shows either one of the upper coil unit (700A) and the lower coil unit (700B) constituting the coil pattern (700) described above. In this case, the upper coil unit (700A) and the lower coil unit (700B) may have the same substantial structure as each other, differing only in their rotational direction.

[0224] Referring to FIG. 11, the coil pattern (700) can be arranged on the insulating substrate (600) by rotating in one direction and turning multiple times. That is, the coil pattern (700) can be arranged by turning multiple times in a specific rotational direction from one end of the inner side adjacent to the hollow to the other end of the outer side. At this time, the number of turns of the coil pattern (700) may be 10 to 35, or 12 to 32, or 15 to 30. If the number of turns of the coil pattern (700) is less than 10, it may be difficult to provide a Lorentz force to drive the blades (210). Alternatively, if the number of turns of the coil pattern (700) is less than 10, the driving speed of the blades (210) may be reduced. Additionally, if the number of turns of the coil pattern (700) exceeds 35, the process difficulty and process complexity increase as the line width and / or spacing of the coil pattern (700) are finer, and the product yield may decrease accordingly. Additionally, if the number of turns of the coil pattern (700) exceeds 35, the size of the aperture module may increase, and the size of the camera module may increase accordingly.

[0225] The coil pattern (700) may have a specific size. Here, the size of the coil pattern (700) may refer to an outer width (dow), an inner width (diw), an outer length (dol), and an inner length (dil).

[0226] The coil pattern (700) may have an optimal outer length (dol), inner length (dil), outer width (dow), and inner width (dw) for driving the blades (210) in a limited space.

[0227] Preferably, the outer length (dol) of the coil pattern (700) may be 3.0±1mm, the inner length (dil) may be 1.85±0.5mm, the outer width (dow) may be 1.52±0.5mm, and the inner width (dow) may be 0.2±0.05mm.

[0228] That is, the specifications of each coil unit of the coil pattern (700) of the embodiment can be summarized as shown in Table 1.

[0229] ParameterSymbolValue(mm) Outer Length dol 3.0±1mm Inner Length dil 1.85±0.5mm Outer Width dow 1.52±0.5mm Inner Width dw 0.2±0.05mm Number of turn per layers N 10 to 35 times

[0230] If the specifications of the coil pattern (700) according to the embodiment fall outside the range of Table 1, it may be difficult to provide sufficient Lorentz force, or the driving speed of the blades (210) may decrease. Alternatively, as the line width and / or spacing of the coil pattern (700) becomes finer, the difficulty of the process increases and the complexity of the process increases, and consequently, the product yield may decrease. Alternatively, the size of the aperture module may increase, and the size of the camera module may increase accordingly.

[0231]

[0232] FIG. 12 is a cross-sectional view of a coil substrate cut along the BB' direction of FIG. 9, and FIG. 13a and FIG. 13b are cross-sectional views of a coil substrate cut along the CC' direction of FIG. 9.

[0233] Referring to FIG. 12, the coil pattern (700) may be provided in multiple layers on the insulating substrate (600). For example, the coil pattern (700) of FIG. 12 may represent either one of the upper coil units (700A) and either one of the lower coil units (700B). In this case, the upper coil unit (700A) and the lower coil unit (700B) may have different rotation directions, but their substantial layer structures may be identical.

[0234] The upper coil unit (700A) of the coil pattern (700) may include a lower surface and an upper surface opposite to the lower surface.

[0235] At this time, the lower surface and the upper surface of the upper coil unit (700A) may have different shapes. For example, the lower surface of the upper coil unit (700A) may be flat. That is, the lower surface of the upper coil unit (700A) may come into contact with the upper surface of the insulating substrate (600). Accordingly, the lower surface of the upper coil unit (700A) may be provided flat to correspond to the upper surface of the insulating substrate (600).

[0236] The upper surface of the upper coil unit (700A) may have a shape different from the lower surface of the upper coil unit (700A). For example, the upper surface of the upper coil unit (700A) may be convex along the direction away from the lower surface of the upper coil unit (700A). For example, the upper surface of the upper coil unit (700A) may have a convex curved surface. Through this, the embodiment can cause the surface of the upper coil unit (700A) to have a curved surface, thereby increasing the surface area of ​​the upper surface of the upper coil unit (700A). Accordingly, the embodiment can minimize the loss of current transmitted through the upper coil unit (700A), thereby enabling the blades (210) to operate stably. Additionally, the embodiment can further increase the driving speed of the blades (210).

[0237] Accordingly, the lower coil unit (700B) may include an upper surface that contacts the lower surface of the insulating substrate (600) and a lower surface opposite to the upper surface. At this time, the upper surface of the lower coil unit (700B) may have a flat shape corresponding to the lower surface of the insulating substrate (600). Additionally, the lower surface of the lower coil unit (700B) may have a convex curved surface.

[0238] The upper coil unit (700A) may be provided with a plurality of metal layers. The upper coil unit (700A) may include a first metal layer (700A1) disposed on an insulating substrate (600), a second metal layer (700A2) disposed on the first metal layer (700A1), and a third metal layer (700A3) disposed on the second metal layer (700A2).

[0239] And the lower coil unit (700B) may include a first metal layer (700B1), a second metal layer (700B2), and a third metal layer (700B3) corresponding to the first metal layer (700A1), a second metal layer (700A2), and a third metal layer (700A3) of the upper coil unit (700A).

[0240] The first metal layer (700A1) may be disposed on the insulating substrate (600). Specifically, the first metal layer (700A1) may be disposed in direct contact with the upper surface of the insulating substrate (600).

[0241] The first metal layer (700A1) may be formed in multiple layers. For example, the first metal layer (700A1) may include at least one material among nickel, chromium, and titanium. That is, the first metal layer (700A1) may include at least one layer among a nickel layer, a chromium layer, and a titanium layer. For example, the first metal layer (700A1) may include a nickel layer and a chromium layer on the nickel layer.

[0242] The first metal layer (700A1) can be formed through an electroless plating or sputtering process. The first metal layer (700A1) can be disposed with a thin thickness of a thin film. Specifically, the first metal layer (700A1) can be disposed with a thickness of 20 nm or less.

[0243] The first metal layer (700A1) may be a layer that improves the adhesion between the second metal layer (700A2) disposed on the first metal layer (700A1) and the insulating substrate (600). For example, the nickel layer may have good adhesion to the insulating substrate (600), and the chromium layer may have good adhesion to the nickel layer and the second metal layer (700A2). Accordingly, the adhesion of the second metal layer (700A2) disposed on the insulating substrate (600) can be improved.

[0244] A second metal layer (700A2) may be disposed on a first metal layer (700A1). The second metal layer (700A2) may include a material identical to or different from the first metal layer (700A1). Specifically, the second metal layer (700A2) may include a metal material with excellent conductivity. For example, the second metal layer (700A2) may include a metal layer comprising at least one metal selected from copper (Cu), aluminum (Al), chromium (Cr), nickel (Ni), silver (Ag), molybdenum (Mo), gold (Au), titanium (Ti), and alloys thereof. Preferably, the second metal layer (700A2) may include copper. That is, the second metal layer (700A2) may be a copper layer.

[0245] The second metal layer (700A2) can be formed through electroless plating. The second metal layer (700A2) can be placed with a thickness greater than that of the first metal layer (700A1). Specifically, the second metal layer (700A2) can be placed with a thickness of 0.1 μm to 1 μm.

[0246] A third metal layer (700A3) may be disposed on the second metal layer (700A2). The third metal layer (700A3) may contain the same material as the second metal layer (700A2). For example, both the second metal layer (700A2) and the third metal layer (700A3) may contain copper. That is, the third metal layer (700A3) may be a copper layer.

[0247] The third metal layer (700A3) can be formed through electroplating using the second metal layer (700A2) as a seed layer. That is, the second metal layer (700A2) may be a seed layer for electroplating the third metal layer (700A3), and the third metal layer (700A3) may be a plating layer formed through electroplating. The third metal layer (700A3) may be disposed with a thickness greater than that of the first metal layer (700A1) and the second metal layer (700A2). Specifically, the third metal layer (700A3) may be disposed with a thickness of 20㎛ to 60㎛, or 25㎛ to 58㎛, or 30㎛ to 55㎛.

[0248] Additionally, the upper coil unit (700A) and the lower coil unit (700B) may have different thicknesses. For example, the thickness of the upper coil unit (700A) may be greater than the thickness of the lower coil unit (700B). Alternatively, the thickness of the upper coil unit (700A) may be smaller than the thickness of the lower coil unit (700B). This allows the strength of the attractive force and the strength of the repulsive force generated by the first upper coil unit (710) and the second upper coil unit (720) to control the rotational speed of the blades (210) when an opposite current is applied to the first upper coil unit (710) and the second upper coil unit (720) to rotate the blades (210) clockwise, thereby allowing the rotational speed of the blades (210) to be controlled.

[0249] Additionally, the coil substrate may further include a protective layer. For example, an upper protective layer (UPL) may be disposed on the insulating substrate (600), and a lower protective layer (LPL) may be disposed under the insulating substrate (600). The upper protective layer (UPL) may be disposed on the insulating substrate (600) covering the upper coil unit (700A). The upper protective layer (UPL) may be implemented with solder resist, but is not limited thereto. Additionally, the lower protective layer (LPL) may be provided covering the lower coil unit (700B) under the insulating substrate (600). Additionally, the lower protective layer (LPL) may be implemented with solder resist, but is not limited thereto.

[0250]

[0251] Meanwhile, referring to FIG. 13a, a terminal portion (630) may be further disposed on the insulating substrate (600). The terminal portion (630) may be formed together with the coil pattern (700) in the process of forming the coil pattern (700).

[0252] Accordingly, the terminal portion (630) may have a layer structure corresponding to the layer structure of the coil pattern (700). For example, the terminal portion (630) may include a first metal layer (631), a second metal layer (632), and a third metal layer (633).

[0253] In one embodiment, the first metal layer (631), the second metal layer (632), and the third metal layer (633) of the terminal portion (630) may have the same layer structure as the first metal layer (700A1), the second metal layer (700A2), and the third metal layer (700A3) of the upper coil unit (700A) shown in FIG. 12, respectively.

[0254] In another embodiment, as illustrated in (a) and (b) of FIG. 13a, the thickness of the terminal portion (630) may differ from the thickness of the upper coil unit (700A). For example, the terminal portion (630) does not require a relatively large thickness relative to the coil pattern (700). Accordingly, the terminal portion (630) may include a first metal layer (631), a second metal layer (632), and a third metal layer (633), the thickness of which may be smaller than the thickness of the upper coil unit (700A). For example, the terminal portion (630) includes a first metal layer (631), a second metal layer (632), and a third metal layer (633), wherein the thickness of the third metal layer (633) may be 8 µm to 35 µm, or 10 µm to 30 µm, or 12 µm to 25 µm, which is smaller than the thickness of the third metal layer (700A3).

[0255] Additionally, the terminal portion (630) may further include a fourth metal layer (634). The fourth metal layer (634) of the terminal portion (630) may be disposed under the third metal layer (633). The fourth metal layer (634) of the terminal portion (630) may be a surface treatment layer. For example, the fourth metal layer (634) of the terminal portion (630) may include a metal material with high bonding properties with solder. The fourth metal layer (634) may include at least one metal layer among gold, silver, nickel, and tin. In this case, the fourth metal layer (634) may be provided as a single layer or as a plurality of layers. For example, the fourth metal layer (634) may be provided as a single layer including gold or tin, or as a plurality of layers including nickel / palladium / gold.

[0256] In one embodiment, as shown in (a) of FIG. 13a, the terminal portion (630) may have a cross-sectional shape identical to that of the upper coil unit (700A) or the lower coil unit (700B), and may have a thickness smaller than that of the upper coil unit (700A) or the lower coil unit (700B).

[0257] In another embodiment, as shown in (b) of FIG. 13a, the terminal portion (630) may have a cross-sectional shape different from that of the upper coil unit (700A) or the lower coil unit (700B), and may have a thickness smaller than that of the upper coil unit (700A) or the lower coil unit (700B). That is, the terminal portion (630) may be flat on both the upper and lower surfaces, thereby enabling stable solder placement during solder bonding.

[0258]

[0259] Additionally, referring to FIG. 13b, a terminal portion (630) may be further disposed on the insulating substrate (600). The terminal portion (630) may be formed together with the coil pattern (700) in the process of forming the coil pattern (700).

[0260] Accordingly, the terminal portion (630) may have a layer structure corresponding to the layer structure of the coil pattern (700). For example, the terminal portion (630) may include a first metal layer (631), a second metal layer (632), and a third metal layer (633).

[0261] At this time, the first metal layer (631), the second metal layer (632), and the third metal layer (633) of the terminal portion (630) in the embodiment may have the same layer structure as the first metal layer (700A1), the second metal layer (700A2), and the third metal layer (700A3), respectively, of the upper coil unit (700A) shown in FIG. 12. Additionally, the terminal portion (630) may further include a fourth metal layer (634).

[0262] At this time, as illustrated in (a) and (b) of FIG. 13b, the thickness of the terminal portion (630) may differ from the thickness of the upper coil unit (700A). For example, the terminal portion (630) may include a first metal layer (631), a second metal layer (632), and a third metal layer (633), the thickness of which may be greater than the thickness of the upper coil unit (700A). For example, the terminal portion (630) may include a first metal layer (631), a second metal layer (632), and a third metal layer (633), wherein the thickness of the third metal layer (633) may be arranged to be greater than the thickness of the third metal layer (700A3) of the coil pattern (700).

[0263] That is, the terminal portion (630) is a bonding portion that is bonded with solder. Accordingly, to provide ease in the bonding process with solder, the terminal portion (630) may be provided with a thickness greater than the thickness of the coil pattern (700).

[0264] Additionally, as shown in (a) of FIG. 13b, the terminal portion (630) may have a cross-sectional shape identical to that of the upper coil unit (700A) or the lower coil unit (700B), and may have a thickness greater than that of the upper coil unit (700A) or the lower coil unit (700B). Additionally, as shown in (b) of FIG. 13b, the terminal portion (630) may have a cross-sectional shape different from that of the upper coil unit (700A) or the lower coil unit (700B), and may have a thickness greater than that of the upper coil unit (700A) or the lower coil unit (700B).

[0265]

[0266] FIG. 14 is a drawing showing a coil substrate according to a third embodiment.

[0267] Referring to FIG. 14, the coil substrate includes an insulating substrate (600) and a coil pattern (700).

[0268] And, the coil pattern (700) may include an upper coil unit (700A) as shown in FIG. 7, and may further include a lower coil unit (700B) as shown in FIG. 9.

[0269] At this time, a dummy pattern (770) may be provided on the insulating substrate (600). The dummy pattern (770) may include an upper dummy pattern disposed on the upper surface of the insulating substrate (600) and / or a lower dummy pattern disposed on the lower surface of the insulating substrate (600). At this time, FIG. 14 is illustrated as having the upper dummy pattern disposed only on the upper surface of the insulating substrate (600), but is not limited thereto. For example, the dummy pattern (770) may be disposed on the lower surface of the insulating substrate (600), or may be disposed on both the upper and lower surfaces of the insulating substrate (600).

[0270] The dummy pattern (770) may include a first dummy pattern (771) and a second dummy pattern (772) depending on the placement location.

[0271] The first dummy pattern (771) may be placed between a plurality of coil units disposed on the insulating substrate (600). That is, the first dummy pattern (771) may be placed between a plurality of upper coil units (700A) on the upper surface of the insulating substrate (600). For example, the first dummy pattern (771) may be placed in an area between the plurality of upper coil units where no coil pattern is disposed.

[0272] The second dummy pattern (770) may be placed within each of the plurality of coil units. For example, the second dummy pattern (772) may be provided in the inner region of each of the upper coil units (700A).

[0273] A first dummy pattern (771) and a second dummy pattern (772) may be provided to improve processability in the process of forming a coil pattern (700). For example, when the coil pattern (700) is placed without the first dummy pattern (771) and the second dummy pattern (772), the thickness variation between multiple coil units may increase. This may be due to a difference in plating current between an area adjacent to an area where the pattern is not formed and another area.

[0274] Accordingly, the embodiment is configured such that at least one of a first dummy pattern (771) and a second dummy pattern (772) is provided between the plurality of coil units and / or in the inner region of each coil unit, thereby minimizing the thickness variation of the plurality of coil units. Thus, the embodiment can ensure that each of the plurality of coil units has the same thickness, and thus allow a uniform Lorentz force to act on each coil unit. Accordingly, the embodiment can further improve the operating characteristics of the blades (210), and thus allow the blades (210) to operate more stably.

[0275] At this time, the dummy pattern in FIG. 14 is depicted as having a coil shape, but is not limited thereto. For example, the dummy pattern may be wider than the width of the coil pattern. While the coil pattern must maintain a constant spacing / width to form a Lorentz force, the dummy pattern is formed for the pattern uniformity of the coil pattern and does not need to have the same width / spacing and constant spacing / width as the coil pattern. Here, the dummy pattern may be a pattern to which no current is applied, and may refer to a pattern that is not electrically connected to the coil pattern.

[0276]

[0277] The features, structures, effects, etc. described in the above-described embodiments are included in at least one embodiment of the present invention and are not necessarily limited to only one embodiment. Furthermore, the features, structures, effects, etc. exemplified in each embodiment may be combined or modified and implemented in other embodiments by a person skilled in the art to which the embodiments belong. Therefore, details regarding such combinations and modifications should be interpreted as being included within the scope of the present invention.

[0278] Furthermore, although the above description has focused on the embodiments, this is merely illustrative and does not limit the invention. Those skilled in the art will understand that various modifications and applications not exemplified above are possible within the scope of the essential characteristics of the embodiments. For example, each component specifically shown in the embodiments may be modified and implemented. Differences related to such modifications and applications should be interpreted as being included within the scope of the invention as defined in the appended claims.

Claims

1. Insulating substrate; and It includes a coil pattern arranged in a plurality of turns on the insulating substrate, and The above coil pattern is, A first coil pattern arranged by turning multiple times in a first rotational direction on the insulating substrate, and It includes a second coil pattern arranged by turning multiple times in a second rotation direction opposite to the first rotation direction on the insulating substrate, and The above first coil pattern includes a plurality of first coil units, and The above second coil pattern is a coil module for an aperture module comprising a plurality of second coil units.

2. In Paragraph 1, Each of the plurality of first coil units is a coil module for an aperture module disposed between the plurality of second coil units.

3. In Paragraph 1, The above insulating material includes a first substrate region including an opening, and A coil module for an aperture module, wherein the plurality of first coil units and the plurality of second coil units are alternately arranged along the circumferential direction of the first substrate area on the first substrate area.

4. In Paragraph 1, Each of the plurality of first coil units and the plurality of second coil units includes an upper coil unit disposed on the upper surface of the insulating substrate, and The coil pattern comprises a plurality of via electrodes penetrating the upper and lower surfaces of the insulating substrate, and a connection pattern disposed on the lower surface of the insulating substrate and electrically connecting the plurality of via electrodes. A coil module for an aperture module, wherein the plurality of first coil units and the plurality of second coil units are electrically connected through the via electrode and the connection pattern.

5. In Paragraph 1, Each of the plurality of first coil units and the plurality of second coil units includes an upper coil unit disposed on the upper surface of the insulating substrate, and The coil pattern comprises a plurality of via electrodes penetrating the upper and lower surfaces of the insulating substrate, and a connection pattern disposed on the lower surface of the insulating substrate and electrically connecting the plurality of via electrodes. A coil module for an aperture module, wherein each of the plurality of first coil units and the plurality of second coil units is electrically connected through the via electrode and the connection pattern.

6. In Paragraph 1, The first coil unit comprises a plurality of first upper coil units disposed on the upper surface of the insulating substrate, and a plurality of first lower coil units disposed on the lower surface of the insulating substrate and corresponding to the plurality of first upper coil units along the thickness direction of the insulating substrate. The second coil unit comprises a plurality of second upper coil units disposed on the upper surface of the insulating substrate, and a plurality of second lower coil units disposed on the lower surface of the insulating substrate and corresponding to the plurality of second upper coil units along the thickness direction. A coil module for an aperture module, wherein the coil pattern penetrates the insulating substrate along the thickness direction and includes via electrodes electrically connecting the first upper coil unit, the first lower coil unit, the second upper coil unit, and the second lower coil unit.

7. In Paragraph 6, The plurality of first upper coil units and the plurality of second upper coil units are alternately arranged on the upper surface of the insulating substrate, and A coil module for an aperture module, wherein the plurality of first lower coil units and the plurality of second lower coil units are alternately arranged on the lower surface of the insulating substrate.

8. In Paragraph 6, Each of the plurality of first upper coil units is arranged to turn in the first rotational direction from one end on the inner side toward the other end on the outer side, and Each of the above plurality of first lower coil units is arranged to turn in the second rotational direction from one end on the inner side toward the other end on the outer side, and Each of the plurality of second upper coil units is arranged to turn in the second rotational direction from one end on the inner side toward the other end on the outer side, and A coil module for an aperture module, wherein each of the plurality of first upper coil units is arranged to turn in the first rotational direction from one end on the inner side toward the other end on the outer side.

9. In Paragraph 1, The above coil pattern includes a first surface in contact with the insulating substrate and a second surface opposite to the first surface, and A coil module for an aperture module, wherein the second surface comprises a convex curved surface extending away from the first surface.

10. In Paragraph 1, The above coil pattern includes a first metal layer disposed on the insulating substrate, a second metal layer disposed on the first metal layer, and a third metal layer disposed on the third metal layer. A coil module for an aperture module, wherein the third metal layer has a thickness greater than the respective thicknesses of the first metal layer and the second metal layer.

Images