Actuator and camera device comprising same

Abstract

An embodiment comprises: a lens holder movable in a first direction; a magnet arranged in the lens holder; a coil including a plurality of coil units sequentially arranged in the first direction; and a control unit that supplies a plurality of outputs having different phase differences to adjacent coil units selected from among the plurality of coil units, wherein the selected adjacent coil units include coil units which overlap the magnet in a direction perpendicular to the first direction and at least one coil unit which does not overlap the magnet in the direction perpendicular to the first direction.

Description

Actuator and camera device including the same

[0001] The embodiment relates to an actuator and a camera device including the same.

[0002] A camera device is a device that captures a subject as a photo or video, and is installed on portable devices, drones, vehicles, etc. In order to improve the quality of the image, the camera device may have an image stabilization (IS) function, such as an optical image stabilizer (OIS), an autofocus (AF) function, and / or a zooming function, which compensates for or prevents image shaking caused by the user's movements.

[0003] The embodiment provides an actuator and a camera device including the same, which can reduce the number of parts and reduce power consumption required for a zooming operation and an autofocus operation.

[0004] The embodiment provides an actuator capable of improving zoom performance and focus performance and a camera device including the same.

[0005] The embodiment provides an actuator capable of reducing a circuit configuration for performing a zoom function and a focus function and a camera device including the same.

[0006] The embodiment provides an actuator camera device that can reduce power consumption and size.

[0007] An actuator according to an embodiment includes a lens holder movable in a first direction; a magnet disposed on the lens holder; a coil including a plurality of coil units sequentially disposed in the first direction; and a control unit supplying a plurality of outputs having different phase differences to selected coil units among the plurality of coil units, wherein the selected coil units include coil units overlapping the magnet in a direction perpendicular to the first direction and at least one coil unit not overlapping the magnet in a direction perpendicular to the first direction.

[0008] The above overlapping coil units may be three adjacent coil units. The at least one non-overlapping coil unit may be positioned in front or behind the overlapping coil units in the first direction. The at least one non-overlapping coil unit may be adjacent to the overlapping coil units.

[0009] The plurality of outputs supplied to the above overlapping coil units may be three-phase signals.

[0010] The actuator includes a position sensor unit that detects displacement of the magnet in the first direction and outputs an output value, and the control unit can change coil units selected from among the plurality of coil units using the output value of the position sensor unit.

[0011] According to another embodiment, an actuator includes a lens holder movable in a first direction; a magnet disposed on the lens holder; a coil including a plurality of coil units sequentially disposed in the first direction; and a control unit, wherein the control unit includes an amplifier including a first amplifier outputting a first output and a second output, a second amplifier outputting a third output and a fourth output, and a third amplifier outputting a fifth output and a sixth output; and a switching unit selectively supplying the first to sixth outputs to six coil units among the plurality of coil units.

[0012] The switching unit selectively supplies the first to sixth outputs to one end of six adjacent coil units among the plurality of coil units, and the other ends of the plurality of coil units can be commonly connected to each other.

[0013] The first output, the third output, and the fifth output may have a preset phase difference, and the second output, the fourth output, and the sixth output may have the preset phase difference. The preset phase difference may be 120 degrees. The second output may be an inverted signal of the first output, the fourth output may be an inverted signal of the third output, and the sixth output may be an inverted signal of the fifth output.

[0014] It includes a position sensor unit that detects the displacement of the magnet in the first direction and outputs an output value, and the control unit can control the switching unit using the output value of the position sensor unit.

[0015] The control unit can change six coil units selected from among the plurality of coil units using the output value of the position sensor unit.

[0016] The magnet may overlap with three of the six coil units in a direction perpendicular to the first direction and may not overlap with the remaining three of the six coil units.

[0017] A camera device according to an embodiment includes the actuator; and an image sensor facing the first lens holder in the first direction.

[0018] In an embodiment, the outputs of a smaller number of amplifiers than the coil units can be selectively supplied to the coil units by using a switching unit.

[0019] In embodiments, the number of amplifiers required to drive the coil units can be reduced.

[0020] In the embodiment, since only some selected coil units are driven using a switching unit, power consumption for zooming operation or autofocus operation can be reduced.

[0021] In the embodiment, since a three-phase driving current is supplied to the coil units, the driving force for moving the lens assembly can be uniform and stable, thereby improving the accuracy of movement control in the optical axis direction of the lens assembly.

[0022] Additionally, the embodiment can reduce the number of components in a circuit configuration for performing a zoom function and a focus function.

[0023] Additionally, the embodiment can reduce power consumption and size because the circuit configuration for performing the zoom function and focus function can be reduced.

[0024] Figure 1 is a configuration diagram of a camera device according to an embodiment.

[0025] Figure 2 is a block diagram of the first control unit for driving the first coil.

[0026] Figure 3 is a block diagram of a second control unit for driving a second coil.

[0027] Figure 4 is a circuit diagram according to one embodiment of the first control unit.

[0028] Figure 5 may be a circuit diagram according to one embodiment of the second control unit.

[0029] Figures 6a and 6b illustrate the operation of the first to fourth transistors of the first amplifier according to one embodiment.

[0030] Figure 7a is a timing diagram of control signals for controlling the first to third amplifiers.

[0031] Figure 7b is a timing diagram of signals output from the output terminals of the first to third amplifiers.

[0032] Figure 8a is a plan view of the first magnet, the coil units of the first coil, and the first position sensor unit.

[0033] FIG. 8b is a schematic cross-sectional view of the first magnet, the coil units of the first coil, and the first position sensor unit of FIG. 8a.

[0034] FIG. 9a shows a signal supplied to the coil units of the first coil according to an operation of one embodiment of the switching unit.

[0035] Fig. 9b is an output value of the first position sensor unit corresponding to each step of Fig. 9a.

[0036] Figures 10a to 10g illustrate the operation of the switching unit according to each step of Figure 9a.

[0037] Figure 11 shows the movement of the first magnet according to signals supplied to the coil units.

[0038] FIG. 12a is a schematic diagram of a camera device including an actuator according to another embodiment.

[0039] Figure 12b shows a block diagram of the circuit board, control unit, first coil, and second coil of Figure 12a.

[0040] Fig. 13 shows a perspective view of an optical device according to an embodiment.

[0041] Figure 14 shows a configuration diagram of the optical device illustrated in Figure 13.

[0042] Hereinafter, embodiments of the present invention that can specifically achieve the above purpose will be described with reference to the attached drawings.

[0043] In the description of the embodiments, when it is described that each element is formed "on or under", "on or under" includes both cases where two elements are in direct contact with each other or where one or more other elements are formed by being disposed indirectly between the two elements. In addition, when it is expressed as "on or under", it can include the meaning of not only the upward direction but also the downward direction based on one element.

[0044] Additionally, relational terms such as “first” and “second,” “upper / upper / lower,” and “lower / lower / below” used hereinafter may be used only to distinguish one entity or element from another entity or element, without necessarily requiring or implying any physical or logical relationship or order between such entities or elements. In addition, the same reference numbers represent the same elements throughout the description of the drawings.

[0045] Furthermore, terms such as "include," "comprise," or "have" described above, unless specifically stated otherwise, imply that the corresponding component may be included, and thus should be interpreted to include other components rather than excluding other components. Furthermore, terms such as "corresponding" described above may include at least one of the meanings of "opposite" or "overlapping."

[0046] Hereinafter, a camera device according to an embodiment and an optical device including the same will be described with reference to the attached drawings. For convenience of explanation, the camera device according to the embodiment will be described using a Cartesian coordinate system (x, y, z), but it may be described using another coordinate system, and the embodiment is not limited thereto. In each drawing, the X-axis and the Y-axis may mean a direction perpendicular to the Z-axis, which is the optical axis (OA) direction.

[0047] In addition, the Z-axis direction, which is the optical axis (OA) direction, may be referred to as one of the 'first direction', the second direction, and the third direction, the X-axis direction may be referred to as another of the 'first direction', the second direction, and the third direction, and the Y-axis direction may be referred to as the other of the 'first direction', the second direction, and the third direction. In addition, the Y-axis may be referred to as the "first axis" and the Y-axis direction may be referred to as the "first-axis direction", the X-axis may be referred to as the "second-axis", and the X-axis direction may be referred to as the "second-axis direction". For example, the optical axis direction may be the optical axis (OA) of the lens unit (620) or a direction parallel to the optical axis.

[0048] In an embodiment, a connection or connection between electrical elements, circuit elements, or electronic elements may mean an electrical connection or electrical connection.

[0049] An actuator according to an embodiment may perform at least one of an auto-focusing function and a zoom function. In addition, the 'auto-focusing function' may be a function that automatically focuses on a subject by moving the lens in the direction of the optical axis according to the distance of the subject to obtain a clear image of the subject on the image sensor. The 'zoom function' may be a zooming function that increases or decreases the magnification of a distant subject through a zoom lens to take a picture.

[0050] The camera device according to the embodiment may perform an image stabilization function. 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 offset vibration (or movement) caused by the user's hand shaking.

[0051] Hereinafter, the actuator may be replaced with a lens shift device, a lens drive device, or a motor. In addition, the term "camera device" below may be replaced with "camera," "camera module," "camera camera," or "camera camera."

[0052] Fig. 1 is a configuration diagram of a camera device (200) according to an embodiment. For example, Fig. 1 may be a cross-sectional view of the camera device (200) in a direction parallel to the optical axis (OA).

[0053] Referring to FIG. 1, a camera device (200) may include an actuator (100) and an image sensor (810).

[0054] The actuator (100) can move the lens assemblies (622, 624) in the optical axis direction, thereby performing auto focus and / or zoom functions. The actuator (100) can be expressed as a “motor,” a “voice coil motor,” a “lens moving unit,” a “driving unit,” a “first driving unit,” or an “AF and zoom driving unit.”

[0055] The actuator (100) may include a lens unit (620) and a driving unit that moves the lens unit (620) in a first direction (e.g., in the optical axis direction or the Z-axis direction).

[0056] The actuator (100) may include a housing (610) that accommodates or supports a lens unit (620) and a driving unit. For example, the lens unit (620) may be disposed within the housing (610). The lens unit (620) may be a "moving unit" that is movable in a first direction relative to a fixed unit. The fixed unit may be a fixed element. That is, the fixed unit may not move in the direction of the optical axis. Alternatively, the fixed unit may not move or tilt in a direction perpendicular to the optical axis. Furthermore, a configuration coupled to the fixed unit may also correspond to the fixed unit.

[0057] For example, the fixed part may include a housing (610). The fixed part may include a component that is coupled to the housing (610), for example, at least one of a circuit board (190), a coil (120), and a control unit (170, 170C).

[0058] The lens unit (620) may be replaced with a “lens assembly.” For example, the lens unit (620) may include a plurality of lens assemblies. The lens unit (620) may include two lens assemblies (622, 624). In another embodiment, the lens unit (620) may include three or more lens assemblies. For example, the lens assemblies (622, 623) may be arranged or positioned to correspond to, face, or overlap each other in the first direction.

[0059] The actuator (100) may include a fixed lens assembly (640) disposed in front of the lens unit (620). The fixed assembly (640) may be disposed on the opposite side of the lens assembly (624) with respect to the lens assembly (622). For example, the fixed lens assembly (640) may not move in the optical axis direction and may have a fixed position. For example, the fixed lens assembly (640) may include a plurality of lenses (642). In another embodiment, the fixed lens assembly may be a separate component not included in the actuator (100). In yet another embodiment, the fixed lens assembly may be omitted.

[0060] For example, the fixed lens assembly (640) can perform a focuser function that focuses parallel light at a specific location. In addition, for example, the lens assembly (622) can perform a variator function that refocuses the image focused by the fixed lens assembly, which is a focuser, at another location. In addition, for example, the lens assembly (624) can perform a position compensation function for the image focused by the variator. In addition, the lens assembly (624) can perform a compensator function that accurately focuses the image focused by the lens assembly (622) onto the pixels of the image sensor (810).

[0061] For example, the lens assembly (622) may be a zoom lens assembly that performs a zooming function, and the lens assembly (624) may be a focus lens assembly that performs a focusing function.

[0062] The housing (610) may be expressed as a “base,” a “holder,” or a case, etc. The housing (610) may have a polyhedral (e.g., rectangular parallelepiped) shape having a space therein to accommodate or support the lens unit (620) and the driving unit.

[0063] For example, the housing (610) may include a body including a plurality of sides. For example, the number of sides may be two or more.

[0064] The sides of the housing (610) may be alternatively referred to as “side plates” or “side walls.” For example, the housing (610) may include a first side (612) and a second side (614) positioned opposite each other in the third direction.

[0065] The lens unit (620) may include lens assemblies (622, 624) that are spaced apart from each other. For example, the lens assemblies (622, 624) may be arranged in a first direction.

[0066] The lens assembly (622) may include a lens holder (29) and a lens array (49) disposed in or coupled with the lens holder (29). For example, the lens holder (29) may be alternatively referred to as a “bobbin.” For example, the lens holder (29) may include a lens barrel (29A) in which the lens array (49) is disposed or coupled. For example, the lens array (49) may include a single lens or a plurality of lenses.

[0067] The lens holder (29) may include a support member (29B) connected or coupled with the lens barrel (29A). The support member (29B) may support the first magnet (130A). The support member (29B) may be coupled with the first magnet (130A). For example, the first magnet (130A) may be placed on or coupled to the support member (29B).

[0068] The support member (29B) may extend from the lens barrel (29A). For example, the support member (29B) may extend in a first direction. For example, the support member (29B) may include a first portion (7A) extending in the first direction. Additionally, the support member (29B) may include a second portion (7B) extending in a third direction and connecting the lens barrel (29A) and the first portion (7A). In other embodiments, the second portion (7B) may be omitted.

[0069] For example, the first magnet (130A) may be placed on or coupled with the first portion (7A) of the support portion (29B). For example, the first magnet (130A) may overlap the support portion (29B) in a third direction. Alternatively, the first magnet (130A) may overlap the first portion (7A) of the support portion (29B) in a third direction.

[0070] The support (29B) can overlap with the first magnet (130A) in a third direction. For example, the support (29B) can overlap with at least three or more coil units among the coil units (31-1 to 31-9) of the first coil (120A) in a third direction. For example, the support (29B) can overlap with three or more adjacent coil units among the coil units (31-1 to 31-9) of the first coil (120A) in a third direction.

[0071] The support member (29B) may be expressed as an “extension member” or a “joint member.” For example, the lens barrel (29A) may have a barrel shape and may include an opening (or hole) for joining the lens array (49).

[0072] The first side (or first surface) of the support member (29B) may be connected or coupled to the lens barrel (29A). The support member (29B) may correspond to, face, or overlap the first side (612) of the housing (140) in the second direction (e.g., the Y-axis direction).

[0073] The lens assembly (624) may include a lens holder (39) and a lens array (59) disposed in or coupled with the lens holder (39). For example, the lens holder (39) may be alternatively referred to as a “bobbin.” For example, the lens holder (39) may include a lens barrel (39A) in which the lens array (59) is disposed or coupled. For example, the lens array (59) may include a single lens or a plurality of lenses.

[0074] The lens holder (39) may include a support member (39B) that is connected or coupled with the lens barrel (39A). The support member (39B) may support a second magnet (130B). The support member (39B) may be coupled with the second magnet (130B). For example, the second magnet (130B) may be placed on or coupled to the support member (39B) of the lens barrel (39A).

[0075] The support member (39B) may extend from the lens barrel (39A). For example, the support member (39B) may extend in a first direction. For example, the support member (39B) may include a first portion (6A) extending in the first direction. Additionally, the support member (39B) may include a second portion (6B) extending in a third direction and connecting the lens barrel (39A) and the first portion (6A). In other embodiments, the second portion (6B) may be omitted.

[0076] For example, the second magnet (130B) may be placed on the first part (6A) of the support (39B) or may be coupled with the first part (6A). For example, the second magnet (130B) may overlap the support (39B) in a third direction. Alternatively, the second magnet (130B) may overlap the first part (6A) of the support (39B) in a third direction.

[0077] For example, the support (39B) may overlap with the second magnet (130B) in a third direction. For example, the support (39B) may overlap with at least three or more coil units among the coil units (41-1 to 41-9) of the second coil (120B) in a third direction. For example, the support (39B) may overlap with three or more adjacent coil units among the coil units (41-1 to 41-9) of the second coil (120B) in a third direction.

[0078] The support member (39B) may be expressed as an “extension member” or a “joint member.” For example, the lens barrel (39A) may have a barrel shape and may include an opening (or hole) for joining the lens array (59).

[0079] The first side (or first surface) of the support member (39B) may be connected or coupled to the lens barrel (39A). The support member (39B) may correspond to, face, or overlap the second side (614) of the housing (140) in the second direction (e.g., the Y-axis direction).

[0080] The actuator (100) may be disposed between the housing (610) and the lens unit (620) and may include a support member for supporting the lens unit. For example, the support member may be an elastic member or a rolling member (or sliding member). For example, the elastic member may be a spring or a suspension wire. The rolling member may be expressed as a “ball member,” “ball,” or “ball bearing.”

[0081] For example, the actuator (100) may include at least one first cloud member (not shown) disposed between the lens holder (29) and the housing (610). For example, the first cloud member may be disposed between the support member (29B) of the lens holder (29) and the housing (610). For example, the support member (29B) of the lens holder (29) may include a groove for receiving or placing at least a portion of the first cloud member. The housing (610) may also include a groove for receiving or placing at least another portion of the first cloud member. The first cloud member may be in contact with at least one of the lens holder (29) and the housing (610). The first cloud member may be in contact with at least one of the support member (29B) of the lens holder (29) (or the groove of the support member (29B)) and the housing (610) (or the groove of the housing).

[0082] The lens holder (29) or / and the lens barrel (29A) can be moved in the first direction by the interaction between the first magnet (130A) and the first coil (120A). The lens holder (29) or the lens barrel (29A) can be moved in the first direction in a sliding manner by contacting the first cloud member by the electromagnetic force resulting from the interaction between the first magnet (130A) and the first coil (120A).

[0083] Also, for example, the actuator (100) may include at least one second cloud member (not shown) disposed between the lens holder (39) and the housing (610). For example, the second cloud member may be disposed between the support member (39B) of the lens holder (39) and the housing (610). For example, the support member (39B) of the lens holder (39) may include a groove for receiving or placing at least a portion of the second cloud member. Also, the housing (610) may include a groove for receiving or placing at least another portion of the second cloud member. The second cloud member may be in contact with at least one of the lens holder (39) and the housing (610). The second cloud member may be in contact with at least one of the support member (39B) of the lens holder (39) (or the groove of the support member (39B)) and the housing (610) (or the groove of the housing).

[0084] The lens holder (39) or / and the lens barrel (39A) can be moved in the first direction by the interaction between the second magnet (130B) and the second coil (120B). The lens holder (39) or the lens barrel (39A) can be moved in the first direction in a sliding manner by contacting the second cloud member by the electromagnetic force resulting from the interaction between the second magnet (130B) and the second coil (120B).

[0085] Each of the first cloud member and the second cloud member may be alternatively referred to as a “ball member,” “ball,” or “ball bearing.” For example, each of the first and second cloud members may include at least one ball.

[0086] The lens array (49) of the lens assembly (622) and the lens array (59) of the lens assembly (624) can be sequentially arranged or arranged in the first direction. For example, the lens array can include at least one of a front lens having positive power and a rear lens having negative power. The distance in the optical axis direction between the lens assembly (622) and the lens assembly (624) can be varied by the driving unit.

[0087] The driving unit can move the lens assembly (622) in the first direction and move the lens assembly (624) in the first direction. For example, the driving unit can move at least one lens assembly or lens group in the first direction or the optical axis direction.

[0088] The driving unit may include a magnet (130) disposed in a moving unit (e.g., a lens unit (620)), a coil (120) disposed in a fixed unit (e.g., a housing (610) or a circuit board (190)), and a control unit (170) for controlling the driving of the coil (120). In another embodiment, the magnet may be disposed in the housing and the coil may be disposed in the lens unit (620). The control unit (170, 170A, 170B, or 170C) may be expressed as a “driving unit” or a “driver IC” or a “driving chip”.

[0089] The driving unit may include a circuit board (190) disposed on the fixed unit and electrically connected to the coil (120). For example, the circuit board (190) may be disposed on or coupled to the housing (610). For example, the circuit board (190) may include a first substrate (192) and a second substrate (194). The first coil (120A) may be disposed on or coupled to the first substrate (192), and the second coil (120B) may be disposed on or coupled to the second substrate (194). For example, the first substrate (192) may be disposed on or coupled to a first side (612) of the housing (610), and the second substrate (194) may be disposed on or coupled to a second side (614) of the housing (610). For example, the first substrate (192) and the second substrate (194) may face each other in a third direction or may be positioned opposite each other in the third direction. For example, the circuit board (190) may be a printed circuit board.

[0090] The coil (120) may include a first coil (120A) for performing a zooming function. The coil (120) may also include a second coil (120B) for performing a focusing function.

[0091] Additionally, the magnet (130) may include a first magnet (130A) for performing a zooming function. The magnet (130) may include a second magnet (130B) for performing a focusing function.

[0092] For example, the first magnet (130A) may be placed or coupled to the lens assembly (622), and the second magnet (130B) may be placed or coupled to the lens assembly (624). For example, the first magnet (130A) may be placed or coupled to the lens holder (29) of the lens assembly (622), and the second magnet (130B) may be placed or coupled to the lens holder (39) of the lens assembly (624).

[0093] For example, the first magnet (130A) may be placed or coupled to the support (29B) of the lens holder (29), and the second magnet (130B) may be placed or coupled to the support (39B) of the lens holder (39).

[0094] For example, each of the first and second magnets (130A, 130B) may be a four-pole magnet including two N poles and two S poles. In another embodiment, each of the first and second magnets (130A, 130B) may be a two-pole magnet including one N pole and one S pole.

[0095] For example, in a third direction (e.g., in the Y-axis direction), the first magnet (130A) may correspond to, oppose, or overlap at least three coil units among the plurality of coil units (31 to 33) of the first coil (120A). Also, for example, in a third direction (e.g., in the Y-axis direction), the second magnet (130B) may correspond to, oppose, or overlap at least three coil units among the plurality of coil units (34 to 36) of the second coil (120B).

[0096] For example, the first coil (120A) and the second coil (120B) may be positioned on opposite sides of the housing (610) with the optical axis or lens holders interposed therebetween. For example, the first coil (120A) may be positioned on the first side (612) of the housing (610), and the second coil (120B) may be positioned on the second side (142-2) of the housing (610).

[0097] The first coil (120A) may include a plurality of coil units (31-1 to 39-1). For example, the plurality of coil units (31-1 to 39-1) may be sequentially arranged or arranged in the first direction. For example, the plurality of coil units (31-1 to 39-1) of the first coil (120A) may be arranged or arranged spaced apart from each other at equal intervals. In another embodiment, the plurality of coil units of the first coil may be arranged or arranged sequentially or continuously so as to be in contact with each other.

[0098] In FIG. 1, the first coil (120A) may include nine coil units (31-1 to 39-1). In other embodiments, the first coil (120A) may include more than nine coil units. Alternatively, in other embodiments, the first coil (120A) may include a multiple of three coil units.

[0099] The second coil (120B) may include a plurality of coil units (41-1 to 49-1). For example, the plurality of coil units (41-1 to 49-1) may be sequentially arranged or arranged in the first direction. For example, the plurality of coil units (41-1 to 49-1) may be arranged or arranged spaced apart from each other at equal intervals. In another embodiment, the plurality of coil units (41-1 to 49-1) may be sequentially or continuously arranged or arranged so as to be in contact with each other.

[0100] In FIG. 1, the second coil (120B) may include nine coil units (41-1 to 49-1). In other embodiments, the second coil (120B) may include more than nine coil units. Alternatively, in other embodiments, the second coil (120B) may include a multiple of three coil units.

[0101] For example, the coil units of the first and second coils (120A, 120B) may be in the form of a closed curve or ring having a hollow (or hole). For example, the coil units of each of the first coil (120A) and the second coil (120B) may be in the form of a coil ring wound clockwise or counterclockwise around (or as the center) a third axis parallel to the third direction (e.g., the Y-axis direction).

[0102] The first magnet (130A) may face or overlap at least two adjacent coil units among the plurality of coil units (31-1 to 39-1) of the first coil (120A) in the third direction (Y-axis direction). For example, the first magnet (130A) may face or overlap at least two adjacent coil units among the plurality of coil units (31-1 to 39-1) of the first coil (120A) in the third direction (Y-axis direction). Or, for example, the first magnet (130A) may face or overlap at least three adjacent coil units among the plurality of coil units (31-1 to 39-1) of the first coil (120A) in the third direction (Y-axis direction).

[0103] For example, among the plurality of coil units (31-1 to 39-1) of the first coil (120A), three adjacent coil units may face or overlap the first magnet (130A) in a third direction (e.g., the Y-axis direction).

[0104] The second magnet (130B) may face or overlap at least two adjacent coil units among the plurality of coil units (41-1 to 49-1) of the second coil (120B) in the third direction (Y-axis direction). For example, the second magnet (130B) may face or overlap at least three adjacent coil units among the plurality of coil units (41-1 to 49-1) of the second coil (120B) in the third direction (Y-axis direction).

[0105] For example, three adjacent coil units among the coil units (41-1 to 49-1) of the second coil (120B) may face or overlap the second magnet (130B) in a third direction (e.g., Y-axis direction).

[0106] The actuator (100) may further include a first yoke (19A) disposed on the lens holder (29) and a second yoke (19B) disposed on the lens holder (39). The first yoke (19A) may increase an electromagnetic force due to an interaction between the first magnet (130A) and the first coil (120A). The second yoke (19B) may increase an electromagnetic force due to an interaction between the second magnet (130B) and the second coil (120B). The driving force for moving the lens assemblies (622, 624) may be improved by the first and second yokes (19A, 19B), thereby reducing power consumption for auto-focusing or zoom driving.

[0107] For example, the first yoke (19A) may be placed between the first magnet (130A) and the lens holder (29), and the second yoke (19B) may be placed between the second magnet (130B) and the lens holder (39). For example, the first yoke (19A) may be placed on the support portion (29B) of the lens holder (29), and the second yoke (19B) may be placed on the second support portion (39B) of the lens holder (39).

[0108] For example, the first yoke (19A) may include a body (or “first portion”) that faces the first magnet (130A) in a second direction (e.g., in the Y-axis direction) and is coupled to the lens holder (29), and an extension (or “second portion”) that extends from the body and is disposed on one or more faces of the first magnet (130A). Also, for example, the second yoke (19B) may include a body (or “first portion”) that faces the second magnet (130B) in a second direction (e.g., in the Y-axis direction) and is coupled to the lens holder (39), and an extension (or “second portion”) that extends from the body and is disposed on one or more faces of the second magnet (130B). In other embodiments, the first and second yokes (19A, 19B) may be omitted.

[0109] The control unit (170) may include a first control unit (170A) for driving the first coil (120). In addition, the control unit (170) may include a second control unit (170B) for driving the second coil (120B). For example, each of the first control unit (170A) and the second control unit (170B) may be in the form of a separate chip or an IC chip (Integrated Circuit chip). The control unit (170) may be electrically connected to the circuit board (190). In another embodiment, the first control unit (170A) and the second control unit (170B) may be implemented as one chip or one IC chip (Integrated Circuit chip).

[0110] For example, each of the first control unit (170A) and the second control unit (170B) may be a driver IC. For example, the first control unit (170A) and the second control unit (170B) may be disposed on or coupled to a circuit board (190). The first control unit (170A) and the second control unit (170B) may be electrically connected to the circuit board (190). For example, the first control unit (170A) may be disposed on or coupled to the first circuit board (190A), and the second control unit (170B) may be disposed on or coupled to the second circuit board (190B). For example, the first control unit (170A) may be electrically connected to the first circuit board (190A), and the second control unit (170B) may be electrically connected to the second circuit board (190B).

[0111] Figure 2 is a block diagram of a first control unit (170A) for driving a first coil (120A), and Figure 3 is a block diagram of a second control unit (170B) for driving a second coil (120B).

[0112] Referring to FIGS. 2 and 3, the first control unit (170A) can output a plurality of signals (SH1 to SH3, SL1 to SL3) for driving the first coil (120A).

[0113] The first control unit (170A) can supply a plurality of outputs (or signals) (SH1 to SH3, SL1 to SL3) having different phase differences to selected coil units among the coil units (31-1 to 39-1) of the first coil (120A). For example, at least two of the selected coil units may be adjacent coil units. Or, for example, all of the selected coil units may be adjacent coil units. In this case, the selected coil units may include coil units that overlap the first magnet (130A) in a direction perpendicular to the first direction and at least one coil unit that does not overlap the first magnet (130A) in a direction perpendicular to the first direction. For example, the coil units that overlap the first magnet (130A) may be three adjacent coil units. For example, at least one coil unit that does not overlap with the first magnet (130A) may be positioned in front or behind the coil units that overlap with the first magnet (130A). In this case, the front or behind may be in the first direction or behind. The plurality of outputs (or signals) supplied to the coil units that overlap with the first magnet (130A) may be three-phase signals. The first control unit (170A) may change the selected coil units among the plurality of coil units (31-1 to 39-1) using the output value of the first position sensor unit (270A).

[0114] For example, the first control unit (170A) can output a first group signal (SH1 to SH3) and a second group signal (SL1 to SL3) for driving a plurality of coil units (31-1 to 39-1) of the first coil (120A). Each of the first group signals (SH1 to SH3) and the second group signals (SL1 to SL3) can be a current signal or a voltage signal.

[0115] The first group signal may include a plurality of signals (SH1 to SH3) with different phases. The plurality of signals (SH1 to SH3) may be signals with different phases. For example, the plurality of signals (SH1 to SH3) may be AC ​​signals with different phases. For example, the magnitudes of each of the plurality of signals (SH1 to SH3) may be the same.

[0116] For example, the plurality of signals (SH1 to SH3) may be signals having a preset phase difference. For example, the preset phase difference may be a multiple of G (a natural number where G ≥ 1) of a preset phase value (e.g., 120 degrees). For example, the preset phase difference may be 120 degrees. For example, the first signal (SH1) may be a U-phase driving signal, the second signal (SH2) may be a V-phase driving signal, and the third signal (SH3) may be a W-phase driving signal.

[0117] For example, the first to third signals (SH1 to SH3) may be an AC current or an AC voltage with a phase difference of 120 degrees. For example, each of the first to third signals (SH1 to SH3) may be a sine wave signal. For example, the first to third signals (SH1 to SH3) may be a three-phase sine wave signal. For example, each of the first to third signals (SH1 to SH3) may be a sine wave or a cosine wave signal. For example, each of the first to third signals (SH1 to SH3) may be a pulse wave or a square wave. Alternatively, each of the first to third signals (SH1 to SH3) may be a PWM (Pulse Width Modulation) signal.

[0118] The second group signal may include a plurality of signals (SL1 to SL3) corresponding to a plurality of signals (SH1 to SH3) of the first group signal.

[0119] The second group signal may include a plurality of signals (SL1 to SL3) having different phases. The plurality of signals (SL1 to SL3) of the second group signal may be signals having different phases. For example, the plurality of signals (SL1 to SL3) of the second group signal may be AC ​​signals having different phases. For example, the magnitudes of each of the plurality of signals (SL1 to SL3) may be the same.

[0120] For example, the plurality of signals (SL1 to SL3) may be signals having a preset phase difference. For example, the preset phase difference may be a multiple of G (a natural number where G ≥ 1) of a preset phase value (e.g., 120 degrees). For example, the preset phase difference may be 120 degrees. For example, the first signal (SL1) may be a U-phase driving signal, the second signal (SL2) may be a V-phase driving signal, and the third signal (SL3) may be a W-phase driving signal.

[0121] For example, the first to third signals (SL1 to SL3) may be an AC current or an AC voltage with a phase difference of 120 degrees. For example, each of the first to third signals (SL1 to SL3) may be a sine wave signal. For example, the first to third signals (SL1 to SL3) may be a three-phase sine wave signal. For example, each of the first to third signals (SL1 to SL3) may be a sine wave or a cosine wave signal. For example, each of the first to third signals (SL1 to SL3) may be a pulse wave or a square wave. Alternatively, each of the first to third signals (SL1 to SL3) may be a PWM signal.

[0122] The second group signal may be an inverted signal of the first group signal. For example, the first group signal and the second group signal may have a phase difference of 180 degrees. For example, two corresponding signals included in the first and second group signals may have a phase difference of 180 degrees.

[0123] Referring to FIG. 2, the first control unit (170A) may include an amplifier unit (40-1) that outputs first and second group signals and a switching unit (80A) that supplies the first and second group signals to a plurality of coil units (31-1 to 39-1) of the first coil (120A).

[0124] The amplifier unit (40-1) may include a plurality of amplifiers. Each of the plurality of amplifiers may include a first output terminal for outputting one of the signals of the first group signal and a second output terminal for outputting one of the signals of the second group signal. Although FIG. 2 exemplifies three amplifiers (30A to 30C) and nine coil units (31-1 to 39-1), other embodiments may include three or more amplifiers and nine or more coil units.

[0125] For example, the amplifier unit (40-1) may include a first amplifier (30A), a second amplifier (30B), and a third amplifier (30C).

[0126] The first amplifier (30A) may include an output terminal (41A) that outputs a first signal (SH1) of a first group signal and an output terminal (41B) that outputs a first signal (SL1) of a second group signal.

[0127] The second amplifier (30A) may include an output terminal (42A) that outputs a second signal (SH2) of the first group signal and an output terminal (42B) that outputs a second signal (SL2) of the second group signal.

[0128] The third amplifier (30C) may include an output terminal (43A) that outputs a third signal (SH3) of the first group signal and an output terminal (43B) that outputs a third signal (SL3) of the second group signal.

[0129] For example, the first control unit (170A) may include a control signal generation unit (70A) that generates or outputs control signals (S1 to S3) for controlling the first to third amplifiers (30A, 30B, 30C).

[0130]

[0131] *The first to third amplifiers (30A, 30B, 30C) may be supplied with a first power supply and a second power supply, respectively. For example, the voltage (VDD) of the first power supply may be a first voltage. The voltage (VSS) of the second power supply may be a second voltage. For example, the voltage (VSS) of the second power supply may be lower than the voltage (VDD) of the first power supply. For example, the first to third amplifiers (30A, 30B, 30C) may be biased by the voltage (VDD) of the first power supply and the voltage (VSS) of the second power supply, respectively.

[0132] Additionally, the first control unit (170A) may include a current source (210) (or “voltage source”) connected to each of the first to third amplifiers (30A, 30B, 30C). For example, the second power source may include the current source (210). For example, the voltage of the second power source may be the voltage (VS) of the current source (210) (or voltage source).

[0133] In another embodiment, the current source (210) (or voltage source) may be omitted, and in this case, the voltage of the second power source may be a ground voltage, a ground voltage, or 0 [V].

[0134] For example, the current source (210) (or voltage source) may be connected between the ground power supply (VSS) and the first to third amplifiers (30A, 30B, 30C). For example, the current source (210) (or voltage source) may be an AC power source or a DC power source. For example, the current source (210) (or voltage source) may supply a sinusoidal current (or a sinusoidal voltage). For example, the current source (210) (or voltage source) may be a constant current source (or constant voltage source). In another embodiment, the first control unit (170A) may include a "voltage source" instead of the current source (210).

[0135] The switching unit (80A) can selectively supply the first group signal and the second group signal to a plurality of coil units (31-1 to 31-9) of the first coil (120A).

[0136] For example, the switching unit (80A) can selectively supply a plurality of signals (e.g., SH1 to SH3) of the first group signal and a plurality of signals (SL1 to SL3) of the second group signal to four or more coil units among the plurality of coil units (31-1 to 31-9) of the first coil (120A).

[0137] For example, the switching unit (80A) can selectively supply a plurality of signals (e.g., SH1 to SH3) of the first group signal and a plurality of signals (SL1 to SL3) of the second group signal to six coil units among the plurality of coil units (31-1 to 31-9) of the first coil (120A).

[0138] For example, the switching unit (80A) can selectively supply a plurality of signals (e.g., SH1 to SH3) of the first group signal and a plurality of signals (SL1 to SL3) of the second group signal to six adjacent coil units among the plurality of coil units (31-1 to 31-9) of the first coil (120A).

[0139] The output terminals (41A and 41B, 42A and 42B, 43A and 43B) of the plurality of amplifiers (30A, 30B, 30C) can be connected to or contacted with the switching unit (80A).

[0140] The switching unit (80A) can selectively connect the output terminals (41A and 41B, 42A and 42B, 43A and 43B) of a plurality of amplifiers (30A, 30B, 30C) and the terminals (A1 to A3, B1 to B3, C1 to C3) of a plurality of coil units (31-1 to 39-1) by a control signal (or switching control signal) (R1 to RN, N is a natural number > 1).

[0141] Each of one end of the plurality of coils (31-1 to 39-1) of the first coil (120A) may be connected or connected to the switching unit (80A). Each of the other ends of the plurality of coils (31-1 to 39-1) of the first coil (120A) may be commonly connected or connected. For example, each of the other ends of the plurality of coils (31-1 to 39-1) of the first coil (120A) may be commonly connected to ground. Or, for example, each of the other ends of the plurality of coils (31-1 to 39-1) of the first coil (120A) may be commonly connected to a second power source. Or, each of the other ends of the plurality of coils (31-1 to 39-1) of the first coil (120A) may be commonly connected to a third power source different from the first and second power sources. For example, the voltage of the third power source may be lower than that of the first power source and higher than that of the second power source.

[0142] The switching unit (80A) may include a first switching unit (81A) (or “first switching circuit”), a second switching unit (81B) (or “second switching circuit”), and a third switching unit (81C) (or “third switching circuit”). Each of the switching units (81A to 81C) may include a plurality of switches.

[0143] The first switch unit (81A) can be controlled by control signals (R1 to R3) and can selectively connect the output terminals (41A, 41B) of the amplifier (30A) to two coil units among the plurality of coil units (31-1 to 39-1).

[0144] For example, the first switch unit (81A) can supply or apply one of the signals (SH1 to SH3) of the first group signal and one of the signals (SL1 to SL3) of the second group signal to two of the plurality of coil units (31-1 to 39-1).

[0145] For example, the first switch unit (81A) can supply the outputs (SH1, SL1) of the first and second output terminals (41A, 41B) of the first amplifier (30A) to one of three different coil units (31-1, 34-1, 37-1).

[0146] For example, the first switch unit (81A) can supply the outputs (SH1, SL1) of the first and second output terminals (41A, 41B) of the first amplifier (30A) to one of the terminals (A1 to A3) of three different coil units (31-1, 34-1, 37-1).

[0147] For example, the first switch unit (81A) may include a plurality of switches (SW1 to SW3). The switches (SW1 to SW3) may connect the output terminals (41A, 41B) of the first amplifier (30A) to two selected terminals (A1 to A3) of three selected coil units (31-1, 34-1, 37-1) among the plurality of coil units (31-1 to 39-1) by control signals (R1 to R3).

[0148] The second switch unit (81B) can be controlled by control signals (R4 to R6) and can selectively connect the output terminals (42A, 42B) of the amplifier (30B) to two other coil units among the plurality of coil units (31-1 to 39-1).

[0149] For example, the second switch unit (81B) can supply or apply any other one of the signals (SH1 to SH3) of the first group signal and any other one of the signals (SL1 to SL3) of the second group signal to the other two coil units among the plurality of coil units (31-1 to 39-1).

[0150] For example, the second switch unit (81B) can supply the outputs (SH2, SL2) of the first and second output terminals (42A, 42B) of the second amplifier (30B) to one of three different coil units (32-1, 35-1, 38-1).

[0151] For example, the second switch unit (81B) can supply the outputs (SH2, SL2) of the first and second output terminals (42A, 42B) of the second amplifier (30B) to one of the terminals (B1 to B3) of three different coil units (32-1, 35-1, 38-1).

[0152] For example, the second switch unit (81B) may include a plurality of switches. The switches of the second switch unit (81B) may connect the output terminals (42A, 42B) of the second amplifier (30B) to two selected terminals (B1 to B3) of three other coil units (32-1, 35-1, 38-1) selected from among the plurality of coil units (31-1 to 39-1) by control signals (R4 to R6).

[0153] The third switch unit (81C) can be controlled by control signals (R7 to R9) and can selectively connect the output terminals (43A, 43B) of the amplifier (30C) to another two coil units among the plurality of coil units (31-1 to 39-1).

[0154] For example, the third switch unit (81C) can supply or apply another one of the signals (SH1 to SH3) of the first group signal and another one of the signals (SL1 to SL3) of the second group signal to another two coil units among the plurality of coil units (31-1 to 39-1).

[0155] For example, the third switch unit (81C) can supply the outputs (SH3, SL3) of the first and second output terminals (43A, 43B) of the third amplifier (30C) to one of three different coil units (33-1, 36-1, 39-1).

[0156] For example, the third switch unit (81C) can supply the outputs (SH3, SL3) of the first and second output terminals (43A, 43B) of the third amplifier (30C) to one of the terminals (C1 to C3) of three different coil units (33-1, 36-1, 39-1).

[0157] For example, the third switch unit (81C) may include a plurality of switches. The switches of the third switch unit (81C) may connect the output terminals (43A, 43B) of the third amplifier (30C) to two selected terminals (C1 to C3) of three other coil units (33-1, 36-1, 39-1) selected from among the plurality of coil units (31-1 to 39-1) by control signals (R7 to R9).

[0158] The first amplifier (30A) can receive a control signal (S1). The voltage of the first output terminal (41A) and the voltage of the second output terminal (41B) of the first amplifier (30A) can be controlled by the control signal (S1). For example, the voltage of the first output terminal (41A) can be pulled up (or pulled down) between the voltage of the first power source and the voltage of the second power source, and the output voltage of the second output terminal (41B) can be pulled down (or pulled up).

[0159] The second amplifier (30B) can receive a control signal (S2). The voltage of the first output terminal (42A) and the voltage of the second output terminal (42B) of the second amplifier (30B) can be controlled by the control signal (S2). For example, the voltage of the first output terminal (42A) can be pulled up (or pulled down) between the voltage of the first power source and the voltage of the second power source, and the output voltage of the second output terminal (42B) can be pulled down (or pulled up).

[0160] The third amplifier (30C) can receive a control signal (S3). The voltage of the first output terminal (43A) and the voltage of the second output terminal (43B) of the third amplifier (30C) can be controlled by the control signal (S3). For example, the voltage of the first output terminal (43A) can be pulled up (or pulled down) between the voltage of the first power source and the voltage of the second power source, and the output voltage of the second output terminal (43B) can be pulled down (or pulled up).

[0161] In the embodiment, since a three-phase signal is supplied to a plurality of coil units (31-1 to 39-1) of the first coil by the switching unit (80A), the driving force for moving the zoom moving unit (e.g., lens assembly (622)) can be uniform and stable. This can improve the accuracy of movement control (e.g., zoom performance) of the lens assembly (622) in the optical axis direction. In addition, since the lens assembly (622) is moved using a plurality of coil units (31-1 to 31-9) arranged in the optical axis direction, the movement distance or stroke section of the lens assembly (622) in the optical axis direction can be increased.

[0162] Referring to FIG. 3, the second control unit (170B) can output a plurality of signals (SH4 to SH6, SL4 to SL6) for driving the second coil (120B).

[0163] The second control unit (170B) can supply a plurality of outputs (or signals) (SH4 to SH6, SL4 to SL6) having different phase differences to adjacent coil units selected from among the coil units (41-1 to 49-1) of the second coil (120B). At this time, the selected adjacent coil units may include coil units that overlap the second magnet (130B) in a direction perpendicular to the first direction and at least one coil unit that does not overlap the second magnet (130B) in a direction perpendicular to the first direction. For example, the coil units that overlap the second magnet (130B) may be three adjacent coil units. For example, at least one coil unit that does not overlap the second magnet (130B) may be located in front or rear of the coil units that overlap the second magnet (130B). At this time, the front or rear may be front or rear in the first direction. The plurality of outputs (or signals) supplied to the coil units overlapping with the second magnet (130B) may be three-phase signals. The second control unit (170B) may change the coil units selected from among the plurality of coil units (41-1 to 49-1) using the output value of the second position sensor unit (270B).

[0164] The second control unit (170B) may include an amplifier unit (40-2) that outputs first and second group signals and a switching unit (80B) that supplies the first and second group signals to a plurality of coil units (41-1 to 49-1) of the second coil (120B). The switching units (80A, 80B) may be expressed as a “multiplexer unit,” a “selector unit,” a “distribution unit,” a “supply unit,” or an “encoder.”

[0165] The amplifier (40-2) may include a plurality of amplifiers. Each of the plurality of amplifiers may include a first output terminal for outputting one of the signals of the first group signal and a second output terminal for outputting one of the signals of the second group signal. Although FIG. 2 exemplifies three amplifiers (30D to 30F) and nine coil units (41-1 to 49-1), other embodiments may include three or more amplifiers and nine or more coil units.

[0166] For example, the amplifier unit (40-2) may include a first amplifier (30D), a second amplifier (30E), and a third amplifier (30F). The first amplifier (30D) may include an output terminal (44A) for outputting a first signal (SH4) of a first group signal and an output terminal (44B) for outputting a first signal (SL4) of a second group signal. The second amplifier (30E) may include an output terminal (45A) for outputting a second signal (SH5) of the first group signal and an output terminal (45B) for outputting a second signal (SL5) of the second group signal. The third amplifier (30F) may include an output terminal (46A) for outputting a third signal (SH6) of the first group signal and an output terminal (46B) for outputting a third signal (SL6) of the second group signal.

[0167] For example, the second control unit (170B) may include a control signal generation unit (70B) that generates or outputs control signals (S4 to S6) for controlling the first to third amplifiers (30D, 30E, 30F).

[0168] The description of the first to third amplifiers (30A to 30C) and the description of the first group signal and the second group signal of FIG. 2 can be applied or analogized to the first to third amplifiers (30D to 30F) and the first and second group signals (SH4 to SH6, SL4 to SL6) of FIG. 3.

[0169] The switching unit (80B) can be controlled by a control signal (or switching control signal) (W1 to WN, N being a natural number > 1). For example, the switching unit (80B) can include a plurality of switching units (or "switching circuits") (81D to 81F). For example, the plurality of switching units (81D to 81F) can be controlled by the control signals (W1 to W9).

[0170] The switching unit (80B) can selectively supply the first group signal and the second group signal to the plurality of coil units (41-1 to 41-9) of the second coil (120B). For example, the switching unit (80B) can selectively supply the plurality of signals (e.g., SH4 to SH6) of the first group signal and the plurality of signals (SL4 to SL6) of the second group signal to four or more coil units among the plurality of coil units (41-1 to 41-9) of the second coil (120B).

[0171] For example, the switching unit (80B) can selectively supply a plurality of signals (e.g., SH4 to SH6) of the first group signal and a plurality of signals (SL4 to SL6) of the second group signal to six coil units among the plurality of coil units (41-1 to 41-9) of the second coil (120B).

[0172] For example, the switching unit (80B) can selectively supply a plurality of signals (e.g., SH4 to SH6) of the first group signal and a plurality of signals (SL4 to SL6) of the second group signal to six adjacent coil units among the plurality of coil units (41-1 to 41-9) of the second coil (120B).

[0173] The output terminals (44A and 44B, 45A and 45B, 46A and 46B) of the plurality of amplifiers (30D, 30E, 30F) can be connected to or contacted with the switching unit (80B).

[0174] The switching unit (80B) can selectively connect the output terminals (44A and 44B, 45A and 45B, 46A and 46B) of a plurality of amplifiers (30D, 30E, 30F) and the terminals (D1 to D3, E1 to E3, F1 to F3) of a plurality of coil units (41-1 to 49-1) by a control signal (or switching control signal) (W1 to WN, N being a natural number > 1).

[0175] The description of the switching unit (80A) and the coil units (31-1 to 39-9) of the first coil (120A) of FIG. 2 can be applied or analogized to the coil units (41-1 to 49-1) of the switching unit (80B) and the second coil (120B) of FIG. 3.

[0176] In the embodiment, since a three-phase signal is supplied to the coil units (41-1 to 49-1) of the second coil (120B) by the switching unit (80B), the driving force for moving the focus moving unit (e.g., lens assembly (624)) can be uniform and stable. This can improve the accuracy of movement control (e.g., focus performance) of the lens assembly (624) in the optical axis direction. In addition, since the lens assembly (624) is moved using three coil units (34 to 36) arranged in the optical axis direction, the movement distance or stroke section of the lens assembly (624) in the optical axis direction can be increased.

[0177] Figure 4 is a circuit diagram according to one embodiment of the first control unit (170A).

[0178] Referring to FIG. 4, at least one of the first to third amplifiers (30A to 30C) may include a differential amplifier or an H-bridge circuit. For example, each of the first to third amplifiers (30A to 30C) may include a differential amplifier or an H-bridge circuit. The first and second output terminals of each of the first to third amplifiers (30A to 30C) may be two output terminals of an H-bridge circuit or two output terminals of a differential amplifier.

[0179] Each of the control signals (S1, S2, S3) may include two or more control signals.

[0180] For example, control signal (S1) may include four control signals (P1 to P4). Control signal (S2) may include four control signals (P5 to P8). Control signal (S3) may include four control signals (P9 to P12).

[0181] In another embodiment, any two of the four control signals (P1 to P4) may be the same signal, the remaining two of the four control signals (P1 to P4) may be the same signal, and any two of the control signals and the remaining two control signals may be different signals.

[0182] At least one (e.g., 30A) of the first to third amplifiers (30A to 30C) may include two transistors connected in series (e.g., M1, M3) and two other transistors connected in series (e.g., M2, M4). The two transistors (e.g., M1, M3) may be connected in parallel with the other two transistors (e.g., M2, M4).

[0183] Additionally, a portion (41A) where two transistors (e.g., M1, M3) are connected to each other may be connected to one end of at least one (e.g., 31) of the first to third coil units (31, 32, 33). A portion (41B) where the other two transistors (e.g., M2, M4) are connected to each other may be connected to the other end of at least one (e.g., 31) of the first to third coil units (31, 32, 33). The description of the transistors (M1 to M4) of the amplifier (30A) and the first coil unit (31) may also be applied or analogized to other amplifiers (30B, 30C) and other coil units (32, 33).

[0184] For example, the first amplifier (30A) may include first to fourth transistors (M1 to M4). The first transistor (M1) may include a source and a drain connected between a first gate and a first power source and a first output terminal (41A). The second transistor (M2) may include a source and a drain connected between a second gate and a first power source and a second output terminal (41B). The third transistor (M3) may include a source and a drain connected between a third gate and a first output terminal (41A) and a current source (210) (or a second power source). The fourth transistor (M4) may include a source and a drain connected between a fourth gate and a second output terminal (41B) and a current source (210) (or a second power source). For example, the drain of the first transistor (M1) and the drain of the second transistor (M2) can be connected to each other, and the source of the third transistor (M3) and the source of the fourth transistor (M4) can be connected to each other.

[0185] For example, the first output terminal (41A) may be a connection node between the first transistor (M1) and the third transistor (M3), and the second output terminal (41B) may be a connection node between the second transistor (M2) and the fourth transistor (M4).

[0186] For example, each of the first to fourth transistors (M1 to M4) may be either a P-type transistor (e.g., a PMOS transistor) or an N-type transistor (e.g., an NMOS transistor). For example, each of the first and second transistors (M1, M2) may be a P-type transistor, e.g., a PMOS transistor. Also, for example, each of the third and fourth transistors (M3, M4) may be an N-type transistor, e.g., an NMOS transistor.

[0187] Each of the four control signals (P1 to P4) can be applied to a corresponding one of the first to fourth gates of the first to fourth transistors (M1 to M4). The first to fourth transistors (M1 to M4) can be turned on or off by the control signals (P1 to P4).

[0188] Figures 6a and 6b illustrate the operation of the first to fourth transistors (M1 to M4) of the first amplifier (30A) according to one embodiment.

[0189] Referring to Fig. 6a, when the levels of the first and third control signals (P1, P3) are high and the levels of the second and fourth control signals (P2, P4) are low, the first and fourth transistors (M1, M4) can be turned off, and the second and third transistors (M2, M3) can be turned on. In addition, the voltage of the first output terminal (41A) of the first amplifier (30A) can be pulled down to the voltage (VS) of the second power supply, and the voltage of the second output terminal (41B) of the first amplifier (30A) can be pulled up to the voltage (VDD) of the first power supply.

[0190] The voltage of the first output terminal (41A) (or the signal (SH1) of the first group signal) can be the voltage (VS) of the second power source, and the voltage of the second output terminal (41B) (or the signal (SL1) of the second group signal) can be the voltage (VDD) of the first power source.

[0191] Referring to FIG. 6B, when the levels of the first and third control signals (P1, P3) are low and the levels of the second and fourth control signals (P2, P4) are high, the first and fourth transistors (M1, M4) may be turned on, and the second and third transistors (M2, M3) may be turned off. In addition, the voltage of the first output terminal (41A) of the first amplifier (30A) may be pulled up to the voltage (VDD) of the first power source, and the voltage of the second output terminal (41B) of the first amplifier (30A) may be pulled down to the voltage (VS) of the second power source.

[0192] The voltage of the first output terminal (41A) (or the signal (SH1) of the first group signal) can be the voltage (VDD) of the first power source, and the voltage of the second output terminal (41B) (or the signal (SL1) of the second group signal) can be the voltage (VS) of the second power source.

[0193] For example, the second amplifier (30B) may include fifth to eighth transistors (M5 to M8). For example, the third amplifier (30C) may include ninth to twelfth transistors (M9 to M12).

[0194] The description of the first to fourth transistors (M1 to M4) and control signals (P1 to P4) of the first amplifier (30A) may be applied or analogically applied to the fifth to eighth transistors (M5 to M8) of the second amplifier (30B) and the ninth to twelfth transistors (M9 to M12) of the third amplifier (30C).

[0195] Additionally, the description of FIGS. 6A and 6B can also be applied or analogically applied to the fifth to eighth transistors (M5 to M8) of the second amplifier (30B) and the ninth to twelfth transistors (M9 to M12) of the third amplifier (30C).

[0196] In FIGS. 6A and 6B, two of the first to fourth transistors (M1 to M4) of the H-bridge circuit (M1, M2) may be implemented as P-type transistors (e.g., PMOS transistors), and the other two transistors (M3, M4) may be implemented as N-type transistors (e.g., NMOS transistors), but the present invention is not limited thereto. In other embodiments, each of the first to fourth transistors may be implemented as an N-type transistor or a P-type transistor. In yet other embodiments, at least one of the first to fourth transistors may be implemented as a P-type transistor, and at least another one of the first to fourth transistors may be implemented as an N-type transistor.

[0197] FIG. 7A is a timing diagram of control signals (P1 to P12) for controlling the first to third amplifiers (30A to 30C), and FIG. 7B is a timing diagram of signals output from output terminals (41A and 41B, 42A and 42B, 43A and 43B) of the first to third amplifiers (30A to 30C).

[0198] Referring to FIGS. 7A and 7B , the first to third control signals (S1 to S3) may be signals having preset delay time differences. For example, the first to third control signals (S1 to S3) may be signals having a time difference or phase difference of a preset value. For example, the first to third control signals (S1 to S3) may be signals having the same period (T).

[0199] For example, the preset time difference or phase difference may be T / n. n may be a natural number greater than 1, or n may be a positive real number. For example, the time difference (or phase difference) between the first control signal (S1; P1 to P4) and the second control signal (S2; P5 to P8) may be T / 3, and the time difference (or phase difference) between the first control signal (S1) and the third control signal (D3; P9 to P12) may be 2T / 3.

[0200] By the time difference (or phase difference) between the first to third control signals (S1 to S3), the first to third amplifiers (30A, to 30C) can generate a first group signal (SH1 to SH3) having a preset phase difference and a second group signal (SL1 to SL3) having a preset phase difference.

[0201] Referring to FIG. 7B, the signals (SH1 to SH3) of the first group signal may have a preset phase difference (e.g., 120 degrees or T / 3). The signals (SL1 to SL3) of the second group signal may have a preset phase difference (e.g., 120 degrees or T / 3). For example, the first group signal and the second group signal corresponding to each other may have a phase difference of 180 degrees.

[0202] Figure 5 may be a circuit diagram according to one embodiment of the second control unit (170B).

[0203] Referring to FIG. 5, at least one of the first to third amplifiers (30D to 30F) of the second control unit (170B) may include a differential amplifier or an H-bridge circuit. For example, each of the first to third amplifiers (30D to 30F) may include a differential amplifier or an H-bridge circuit.

[0204] At least one (e.g., 30D) of the first to third amplifiers (30D to 30F) of the second control unit (170B) may include two transistors (e.g., K1 and K3) connected in series and two other transistors (e.g., K2 and K4) connected in series. The two transistors (e.g., K1 and K3) may be connected in parallel with the other two transistors (e.g., K2 and K4). Additionally, a portion (44A) where two transistors (e.g., K1, K3) are connected to each other can be connected to one end of at least one (e.g., 34) of the fourth to sixth coil units (34, 35, 36), and a portion (44B) where the other two transistors (e.g., K2, K4) are connected to each other can be connected to the other end of at least one (e.g., 34) of the fourth to sixth coil units (34, 35, 36). The description of the transistors (K1 to K4) of the amplifier (30D) and the fourth coil unit (34) can also be applied or analogized to other amplifiers (30E, 30F) and other coil units (35, 36).

[0205] The first amplifier (30D) may include first to fourth transistors (K1 to K4), the second amplifier (30E) may include fifth to eighth transistors (K5 to K8), and the third amplifier (30F) may include ninth to twelfth transistors (K9 to K12).

[0206] Each of the control signals (S4, S5, S6) may include two or more control signals.

[0207] For example, the control signal (S4) may include four control signals (Q1 to Q4). The control signal (S5) may include four control signals (Q5 to Q8). The control signal (S6) may include four control signals (Q9 to Q12). The descriptions of FIGS. 4, 6A, 6B, and 7 may be applied or analogized to the second control unit (170B).

[0208] The lens assembly (622) can be moved in the first direction by the electromagnetic force resulting from the interaction between the first coil (120A) and the first magnet (130A). In addition, the lens assembly (624) can be moved in the first direction by the electromagnetic force resulting from the interaction between the second coil (120B) and the second magnet (130B).

[0209] The first control unit (170A) can control the movement of the lens assembly (622) by controlling the signals (SH1 to SH3) of the three-phase first group signal and the signals (SL1 to SL3) of the three-phase second group signal. The second control unit (170B) can control the movement of the lens assembly (624) by controlling the signals (SH4 to SH6) of the first group signal and the signals (SL4 to SL6) of the second group signal.

[0210] As the movement of each of the first lens assembly (622) and the second lens assembly (624) is controlled, the position (or displacement) of each of the first lens assembly (622) and the second lens assembly (624) can be controlled, thereby performing zooming and auto-focusing of the camera device (200).

[0211] The driving unit may include at least one position sensor unit (270A, 270B) for performing feedback driving for accurate zooming and AF operation.

[0212]

[0213] *The actuator (100) may include a position sensor unit (270A) to perform feedback driving for accurate zooming.

[0214] The position sensor unit (270A) can detect the position or displacement of the lens assembly (622). For example, the position sensor unit (270A) can detect the magnet (130A). For example, the position sensor unit (270A) can detect the position or displacement of the magnet (130A).

[0215] The actuator (100) may include a position sensor unit (270B) for performing feedback driving for accurate AF operation. The position sensor unit (270B) may detect the position or displacement of the lens assembly (624). The position sensor unit (270B) may detect the magnet (130B). For example, the position sensor unit (270B) may detect the position or displacement of the magnet (130B).

[0216] For example, the first position sensor unit (270A) may be placed or mounted on the first substrate (192) and may be electrically connected to the first substrate (192). The second position sensor unit (270B) may be placed or mounted on the second substrate (194) and may be electrically connected to the second substrate (194). For example, the first position sensor unit (270A) may be placed, coupled, or mounted on the first surface of the first substrate (192), and the second position sensor unit (270B) may be placed, coupled, or mounted on the first surface of the second substrate (194). The first surface of the first substrate (192) may be a surface facing the first side (612) of the housing (610) or the first coil (120A) in the second direction (e.g., the Y-axis direction). The first surface of the second substrate (194) may be a surface facing the second side (614) of the housing (610) or the first coil (120A) in the second direction (e.g., the Y-axis direction).

[0217] The first position sensor unit (270A) may include a plurality of sensors (71A to 71F). In FIG. 8A, the number of sensors in the first position sensor unit (270A) is six, but in other embodiments, the first position sensor unit (270A) may include two or more sensors.

[0218] For example, the first position sensor unit (270A) may include sensors (71A to 71F). For example, a plurality of sensors (71A to 71D) may be arranged or positioned spaced apart from each other in the first direction.

[0219] For example, the sensors (71A to 71F) may be placed within the hollow portions of selected coil units among the plurality of coil units (31-1 to 39-1). A sensor may be placed within the hollow portion of one of two adjacent coil units, and no sensor may be placed within the hollow portion of the other of the two adjacent coil units.

[0220] In another embodiment, the sensor may be placed within only one of the three adjacent coil units. In another embodiment, the sensor may be placed in each of the coil units (31-1 to 39-1).

[0221] The second position sensor unit (270B) may include a plurality of sensors (72A to 72F). In FIG. 8A, the number of sensors in the second position sensor unit (270B) is six, but in other embodiments, the first position sensor unit (270A) may include two or more sensors. The description of the sensors (71A to 71F) of the first position sensor unit (270A) may be applied or analogized to the sensors (72A to 72F) of the second position sensor unit (270B).

[0222] For example, each of the sensors (71A to 71F) of the first position sensor unit (270A) may be a Hall sensor or a TMR (Tunnel MagnetoResistance) sensor. In another embodiment, at least one of the sensors (71A to 71F) may be a driver IC including a Hall sensor.

[0223] Additionally, each of the sensors (72A to 72F) of the second position sensor unit (270B) may be a Hall sensor or a TMR sensor. For example, the TMR sensor may be a TMR linear magnetic field sensor. In another embodiment, at least one of the sensors (72A to 72F) may be a driver IC including a Hall sensor.

[0224] For example, each of the sensors (71A to 71F) of the first position sensor unit (270A) may include two input terminals to which a driving signal (or driving current) is supplied and two output terminals for outputting an output signal (e.g., an output voltage).

[0225] For example, the output terminals of two or more neighboring sensors among the sensors of the first position sensor unit (270A) may be connected in parallel. For example, the output terminals of the first sensor (71A) and the output terminals of the second sensor (71B) may be connected in parallel, the output terminals of the third sensor (71C) and the output terminals of the fourth sensor (71D) may be connected in parallel, and the output terminals of the fifth sensor (71E) and the output terminals of the sixth sensor (71F) may be connected in parallel. The parallel-connected output terminals of each pair of sensors (71A and 71B, 71C and 71D, 71E and 71F) may be connected in series with each other, and the displacement or position of the first magnet (130A) or the lens assembly (622) may be detected using output signals output from both ends of the series-connected output terminals.

[0226] In another embodiment, the output terminals of each sensor may be connected in series with each other. In this case, the displacement or position of the first magnet (130A) or lens assembly (622) can be detected using the output signals output from the serially connected output terminals.

[0227] In another embodiment, each of the sensors (71A to 71F) may output an independent and separate output signal (or output voltage). The displacement or position of the first magnet (130A) or the lens assembly (622) may be detected using one or more of the output signals output from the sensors (71A to 71F).

[0228] The description of the output signals and connection relationships of the output terminals of the sensors (71A to 71F) of the first position sensor unit (270A) can be applied to the sensors (72A to 72F) of the second position sensor unit (270B) or can be applied analogically.

[0229] FIG. 8a is a plan view of the first magnet (130A), the coil units (31-1 to 39-1) of the first coil (120A), and the first position sensor unit (270A), and FIG. 8b is a schematic cross-sectional view of the first magnet (130A), the coil units (31-1 to 39-1) of the first coil (120A), and the first position sensor unit (270A) of FIG. 8a.

[0230] Referring to FIGS. 8A and 8B, the first magnet (130A) may include a first magnet portion (401), a second magnet portion (402), and a partition wall (403) disposed between the first magnet portion (401) and the second magnet portion (402). Here, the magnet portion may be replaced with a “magnet unit”, and the partition wall (403) may be replaced with a “non-magnetic partition wall”.

[0231] The first magnet portion (401) may include a first polarity region (41A) and a second polarity region (41B). For example, the first polarity region (41A) may be a south pole (or north pole), and the second polarity region (41B) may be a north pole (or south pole). In addition, the first magnet portion (401) may include a first boundary between the first polarity region (41A) and the second polarity region (41B). The first boundary may include a substantially non-magnetic region, a region having almost no polarity, and may be a naturally occurring region to form a magnet composed of one north pole and one south pole.

[0232] The second magnet portion (402) may include a third polarity region (42A) and a fourth polarity region (42B). For example, the third polarity region (42A) may be a north pole (or south pole), and the fourth polarity region (42B) may be a south pole (or north pole). In addition, the second magnet portion (402) may include a second boundary between the third polarity region (42A) and the fourth polarity region (42B). The second boundary may include a substantially non-magnetic region, a region with almost no polarity, and may be a naturally occurring region to form a magnet composed of one north pole and one south pole.

[0233] The partition wall (403) separates or isolates the first magnet section (401) and the second magnet section (402), and may be a substantially non-magnetic section with little polarity. For example, the partition wall may be a non-magnetic material, a gap, or air. For example, the partition wall may be expressed as a "neutral zone" or a "neutral area."

[0234] The partition wall (403) is a portion that is artificially formed when the first magnet portion (401) and the second magnet portion (402) are magnetized, and the width of the partition wall (403) may be greater than the width of the first boundary portion (or the width of the second boundary portion). Here, the width of the partition wall (403) may be the length in the direction from the first magnet portion (401) toward the second magnet portion (402). The width of the first boundary portion (or the second boundary portion) may be the length of the first boundary portion (or the second boundary portion) in the direction from the N pole to the S pole of each of the first and second magnet portions (401, 402).

[0235] The first magnet portion (401) and the second magnet portion (402) may be arranged in the first direction with the partition wall (403) therebetween. For example, the first magnet portion (401) and the second magnet portion (402) may be arranged facing each other in the first direction with the partition wall (403) therebetween.

[0236] The first magnet portion (401) and the second magnet portion (402) may be arranged so that their polarities face each other in the optical axis direction. For example, the first magnet portion (402) and the second magnet portion (402) may be arranged so that they face each other or face each other in the optical axis direction. In addition, for example, the N pole and the S pole of each of the first magnet portion (401) and the second magnet portion (402) may be arranged so that they face each other or face each other in the second direction (e.g., the Y-axis direction).

[0237] For example, the N pole of the first magnet portion (401) may be arranged closer to the coil units (31-1 to 39-1) of the first coil (120A) than the S pole, and the S pole of the second magnet portion (402) may be arranged closer to the coil units (31-1 to 39-1) of the first coil (120A) than the N pole, but in other embodiments, the positions of the N pole and the S pole may be arranged oppositely.

[0238] In another embodiment, the first magnet portion and the second magnet portion of the first magnet may be arranged to face each other in a second direction (e.g., in the Y-axis direction) or a third direction (e.g., in the X-axis direction).

[0239] In another embodiment, the first magnet may be a two-pole magnet including one north pole and one south pole. For example, one north pole and one south pole of the first magnet may be arranged to face each other in the optical axis direction. In another embodiment, one north pole and one south pole of the first magnet may be arranged to face each other in the second direction (e.g., the Y-axis direction).

[0240] The description of the first magnet (130A) can be applied or analogized to the second magnet (130B).

[0241] In the second direction (e.g., in the Y-axis direction), the first magnet (130A) can overlap with at least three coil units (31-1 to 39-1) of the first coil (120A).

[0242] For example, in the second direction (e.g., in the Y-axis direction), the first magnet (130A) may overlap with three adjacent coil units among the coil units (31-1 to 39-1) of the first coil (120A).

[0243] For example, the length (L11) of the first magnet (130A) in the first direction may be smaller than the total length (L4) of the three adjacent coil units (e.g., 31-1 to 33-1) in the first direction (L11 <L4). 예컨대, 전체 길이(L4)는 3개의 코일 유닛들 각각의 광축 방향으로의 길이(L21, L22, L23)와 코일 유닛들 간의 이격 거리(d1)를 합한 것일 수 있다. 예컨대, L11은 인접하는 3개의 코일 유닛들(예컨대, 31 내지 33)의 제1 방향으로의 길이들(L21, L22, L23)의 합보다 작을 수 있다.

[0244] For example, the length (L11) of the first magnet (130A) in the first direction may be greater than the total length of two adjacent coil units (e.g., 31-1 and 32-1) among the plurality of coil units (31-1 to 36-1) in the first direction. For example, the total length of two adjacent coil units (e.g., 31-1 to 32-1) in the first direction may be the sum of the length of each of the two adjacent coil units in the optical axis direction and the separation distance between the adjacent coil units. For example, L11 may be greater than the sum of the lengths of the two adjacent coil units (e.g., 31-1 and 32-1) in the first direction.

[0245] In another embodiment, the length (L11) of the first magnet (130A) in the first direction may be equal to the total length (L4) of the three adjacent coil units (e.g., 31-1 to 33-1) in the first direction.

[0246] For example, the length (L11) of the first magnet (130A) in the first direction may be smaller than the sum of the lengths (e.g., L21, L22, L23) of the three adjacent coil units (e.g., 31-1, 32-1, 33-1) in the first direction. In another embodiment, the length (L11) of the first magnet (130A) in the first direction may be equal to the sum of the lengths (e.g., L21, L22, L23) of the three adjacent coil units in the first direction.

[0247] The length (L11) of the first magnet (130A) in the first direction may be greater than the sum of the lengths of two of the three adjacent coil units in the first direction.

[0248] For example, the length (L11) of the first magnet (130A) in the first direction may be greater than the length (L12) of the first magnet (130A) in the third direction (e.g., X-axis direction) (L11 > L12).

[0249] For example, the length (L12) of the first magnet (130A) in the third direction (e.g., in the X-axis direction) may be smaller than the length (L31) of the coil unit of the first coil (120A) in the third direction (e.g., in the X-axis direction) (L12 < L31). In another embodiment, the length (L12) of the first magnet (130A) in the third direction (e.g., in the X-axis direction) may be equal to or greater than the length (L31) of the coil unit of the first coil (120A) in the third direction (e.g., in the X-axis direction).

[0250] For example, each of the coil units (31-1 to 36-1) of the first coil (120A) may have the same shape. Also, for example, each of the coil units (31-1 to 39-1) of the first coil (120A) may have the same number of turns (or rotations). For example, the lengths (L21, L22, L23) of each of the coil units (31-1 to 39-1) of the first coil (120A) in the first direction may be the same. Also, for example, the lengths (H2) of each of the coil units (31-1 to 33-1) of the first coil (120A) in the third direction (e.g., the X-axis direction) may be the same. In other embodiments, the number of turns, the length in the first direction, or the length in the second direction of at least one of the coil units of the first coil may be different.

[0251] For example, the length (L31) of each coil unit of the first coil (120A) in the third direction (e.g., in the X-axis direction) may be greater than the length (L21) in the first direction (L31 > L21). In another embodiment, the length of each coil unit in the third direction (e.g., in the X-axis direction) may be equal to or less than the length in the first direction.

[0252] For example, the length (L2) of one polarity region of the first magnet (130A) in the first direction may be greater than the length (L21, L22, or L23) of the coil unit (e.g., 31-1) of the first coil (120A) in the first direction (L2>L21, L2>L22, L2>L23).

[0253] For example, the length (L2) of the first magnet portion (401) in the first direction may be greater than the length (L21, L22, or L23) of the coil unit (e.g., 31-1) of the first coil (120A) in the first direction. For example, the length (L2) of the first magnet portion (401) in the first direction may be greater than the length (L21, L22, or L23) of each of the coil units (e.g., 31-1 to 39-1) of the first coil (120A) in the first direction.

[0254] Also, for example, the length (L2) of the second magnet portion (402) in the first direction may be greater than the length (L21, L22, or L23) of the coil unit (e.g., 31-1) of the first coil (120A) in the first direction. For example, for example, the length (L2) of the second magnet portion (402) in the first direction may be greater than the length (L21, L22, or L23) of each of the coil units (e.g., 31-1 to 39-1) of the first coil (120A) in the first direction.

[0255] For example, the length (H1) of the first magnet (130A) in the second direction (e.g., Y-axis direction) may be smaller than the length (H2) of the coil unit of the first coil (120A) in the third direction (H1 <H2). 다른 실시 예에서는 제1 마그네트(130A)의 제2 방향(예컨대, Y축 방향)으로의 길이(H1)는 제1 코일(120A)의 코일 유닛의 제2 방향(예컨대, Y축 방향)으로의 길이(H2)와 동일하거나 클 수도 있다.

[0256] For example, the length (L3) of the partition wall (403) of the first magnet (130A) in the first direction may be smaller than the length (L5) of the hollow space (201) of the coil unit of the first coil (120A) in the first direction. In another embodiment, the length (L3) of the partition wall (403) in the first direction may be equal to or greater than the length (L5) of the hollow space (201) of the coil unit of the first coil (120A) in the first direction.

[0257] For example, the length (L3) of the partition wall (403) in the first direction may be greater than the separation distance (d1) between two adjacent coil units. In another embodiment, the length (L3) of the partition wall (403) in the first direction may be equal to or less than the separation distance (d1) between two adjacent coil units.

[0258] For example, the first pitch (Pitch1) between the first magnet portion (401) and the second magnet portion (402) may be greater than the second pitch (Pitch2) between adjacent coil units (Pitch1 > Pitch2). For example, the first pitch (Pitch1) may be the distance between the center of the first magnet portion (401) and the center of the second magnet portion (402). Additionally, the second pitch (Pitch2) may be the distance between the center of the hollow (201) of one of the two adjacent coil units and the center of the hollow (201) of the other of the two adjacent coil units. In other embodiments, the first pitch may be equal to or smaller than the second pitch.

[0259] Referring to FIGS. 8A and 8B, for example, the sensors (71A, 71B) of the first position sensor unit (270A) may be placed within the hollow space of the first coil unit (31-1) and the third coil unit (33-1) among the three adjacent coil units (31-1 to 33-1).

[0260] The section in which the first magnet (130A) and the coil units (31-1 to 39-1) can overlap each other in the second direction (e.g., Y-axis direction) can be set as the stroke section (801) of the first magnet (130A). When the sensor is placed in the hollow of the second coil unit (32-1), when the first magnet (130A) is positioned close to one side of the stroke section, the sensor overlaps with the partition (403) of the first magnet (130A) in the second direction (e.g., Y-axis direction), so the linearity of the sensor output may deteriorate, which may lower the position detection performance of the first position sensor unit. For the same reason as described above, even when the first magnet (130A) is positioned close to the other side of the stroke section, the sensor (71E, 71F) may be placed within the hollow of the seventh coil unit (37-1) and the ninth coil unit (39-1) among the plurality of coil units (31-1 to 39-1).

[0261] For example, the distance (D11) in the first direction between the first sensor (71A) and the second sensor (71B) may be different from the distance (D12) in the first direction between the second sensor (71B) and the third sensor (71C).

[0262] For example, D11 may be greater than D12. D11 and D12 may be a separation distance between two sensors or a distance between the centers of two sensors. By making D12 smaller than D11, when the first magnet (130A) is positioned close to one end of the coil units (31-1 to 31-9), the second sensor (71B) may be positioned close to the center of the first magnet portion (401) of the first magnet (130A), thereby improving the sensitivity of the second sensor (71B) and improving the linearity of the output of the second sensor (71B).

[0263] Likewise, for example, the distance in the first direction between the sixth sensor (71F) and the fifth sensor (71E) may be different from the distance in the first direction between the fourth sensor (7D) and the fifth sensor (71E). The description of D11 and D12 may be applied or analogized to the distance between the sixth sensor (71F) and the fifth sensor (71E) and the distance between the fourth sensor (7D) and the fifth sensor (71E).

[0264] Referring to FIG. 8A, each of the coil units (31-1 to 39-1) may include a first straight portion (3a), a second straight portion (3b), a first curved portion (3c), and a second curved portion (3d). For example, the first straight portion (3a) and the second straight portion (3b) may face each other or be positioned opposite each other in a first direction (e.g., in the Z-axis direction). For example, the first curved portion (3c) and the second curved portion (3d) may face each other or be positioned opposite each other in a second direction (e.g., in the X-axis direction).

[0265] For example, the first curved portion (3c) can connect one side of the first straight portion (3a) and one side of the second straight portion (3b), and the second curved portion (3d) can connect the other side of the first straight portion (3a) and the other side of the second straight portion (3b).

[0266] Referring to FIG. 8A, for example, the first sensor (71A) may be positioned toward or to the right of the center or central axis of the hollow (201) of the first coil unit (31-1). For example, the first sensor (71A) may be positioned closer to the first straight portion (3a) of the first coil unit (31-1) than to the second straight portion (3b) of the first coil unit (31-1). For example, the second coil unit (32-1) may be positioned closer to the first straight portion (3a) of the first coil unit (31) than to the second straight portion (3b) of the first coil unit (31).

[0267] For example, the second sensor (71B) may be positioned toward the second coil unit (32-1) with respect to the center of the hollow (201) of the third coil unit (33-1). For example, the second sensor (71B) may be positioned closer to the second coil unit (32-1) than to the fourth coil unit (34-1).

[0268] For example, the second sensor (71B) may be positioned closer to the second straight portion (3b) of the third coil unit (33-1) than to the first straight portion (3a) of the third coil unit (33-1). For example, the second coil unit (32-1) may be positioned closer to the second straight portion (3b) of the third coil unit (33-1) than to the first straight portion (3a) of the third coil unit (33-1).

[0269] For example, the third sensor (71C) may be positioned toward the fifth coil unit (35-1) with respect to the center of the hollow (201) of the fourth coil unit (34). For example, the third sensor (71C) may be positioned closer to the fifth coil unit (35-1) than to the third coil unit (33-1).

[0270] For example, the third sensor (71C) may be positioned closer to the first straight portion (3a) of the fourth coil unit (34-1) than to the second straight portion (3b) of the fourth coil unit (34-1). For example, the fifth coil unit (35-1) may be positioned closer to the first straight portion (3a) of the fourth coil unit (34) than to the second straight portion (3b) of the fourth coil unit (34).

[0271] For example, the fourth sensor (71D) may be positioned so as to be tilted toward the fifth coil unit (35-1) with respect to the center of the hollow (201) of the sixth coil unit (36-1). For example, the fourth sensor (71D) may be positioned closer to the second straight portion (3b) of the sixth coil unit (36-1) than to the first straight portion (3a) of the sixth coil unit (36-1). For example, the fifth coil unit (35) may be positioned closer to the second straight portion (3b) of the sixth coil unit (36-1) than to the first straight portion (3a) of the sixth coil unit (36-1).

[0272] For example, the distance in the first direction between the third sensor (71C) and the fourth sensor (71D) may be equal to the distance (D11) in the first direction between the first sensor (71A) and the second sensor (71B).

[0273] In another embodiment, each of the first to fourth sensors (71A to 71D) may be positioned at the center or center of the hollow (201) of a corresponding coil unit among the coil units (31-1 to 36-1). A camera device according to another embodiment may include a sensor positioned within the hollow of each of the six coils.

[0274] The arrangement of the fifth sensor (71E) and the sixth sensor (71F) may be as shown in FIG. 8A, and the description of the arrangement of the first sensor (71A) and the second sensor (71B) described above may be applied or analogized to the fifth sensor (71E) and the sixth sensor (71F).

[0275] In another embodiment, each sensor (71A to 71F) may be placed in the center of the hollow of the corresponding coil unit (31-1, 33-1, 34-1, 36-1, 37-1, 39-1).

[0276] In FIGS. 8A and 8B, the sensor is positioned within the hollow portion of the coil units, but in other embodiments, the sensor may be positioned outside the hollow portion of the coil units. Even if the sensor is positioned outside the hollow portion of the coil units, at least a portion of the sensor may overlap with at least a portion of the first magnet (130A) in the second direction (e.g., the Y-axis direction) within the stroke section of the first magnet (130A) in the first direction.

[0277] FIG. 9a shows signals supplied to coil units (31-1 to 39-1) of a first coil (120A) according to an operation of an embodiment of a switching unit (80A), FIG. 9b shows output values ​​of a first position sensor unit (270A) corresponding to each stage of FIG. 9a, FIGS. 10a to 10g show the operation of a switching unit (80A) according to each stage of FIG. 9a, and FIG. 11 shows the movement of a first magnet (130A) according to signals supplied to coil units (31-1 to 39-1).

[0278] Referring to FIGS. 9A to 11, FIGS. 10A to 10G illustrate the operation of the switching unit (80A) corresponding to the stages (stage 1 to stage 7) of FIG. 9A. For example, FIG. 10A corresponds to stage 1, and FIG. 10G corresponds to stage 7 (stage). In FIG. 9A, “off” means turning off the switch included in the switch circuit, and at this time, the output signal of the amplifier unit (40-1) is not supplied to the corresponding coil unit. In FIGS. 9A to 11, the operation of the switching unit (80A) is divided into a total of seven stages, but this is one embodiment, and in other embodiments, the operation may be divided into more or fewer stages than seven.

[0279] The switching unit (80A) can selectively supply output signals of the K amplifiers of the amplifier unit (40-1) to adjacent N coil units among M coil units (e.g., 31-1 to 39-1). For example, M can be a natural number >1, and 1 < N <M인 자연수일 수 있고, 1≤ K < N인 자연수일 수 있다. 예컨대, M, N, K는 3의 배수일 수 있다. 예컨대, M은 9일 수 있고, N은 6일 수 있고, K는 3일 수 있다. 예컨대, K개의 증폭기들의 출력 신호들의 수는 K개의 2배일 수 있다.

[0280] For example, the switching unit (80A) can selectively supply the first and second outputs (SH1, SL1) of the first amplifier (30A), the third and fourth outputs (SH2, SL2) of the second amplifier (30B), and the fifth and sixth outputs (SH3, SL3) of the third amplifier (30C) to six adjacent coil units among the plurality of coil units (31-1 to 39-1).

[0281] The switching unit (80A) can selectively supply the first to sixth outputs (SH1, SL1, SH2, SL2, SH3, SL3) to one ends of six adjacent coil units among the plurality of coil units, and the other ends of the plurality of coil units can be commonly connected to each other. For example, the first output (SH1), the third output (SH2), and the fifth output (SH3) can have a preset phase difference, and the second output (SL1), the fourth output (SL2), and the sixth output (SL3) can have the preset phase difference. The preset phase difference can be 120 degrees. The second output (SL1) can be an inverted signal of the first output (SH1), the fourth output (SL2) can be an inverted signal of the third output (SH2), and the sixth output (SL3) can be an inverted signal of the fifth output (SH3).

[0282] Referring to FIG. 11, the output signals (SH1 to SH3, SL1 to SL3) of the amplifier (40-1) supplied to the ends (A1 to A3, B1 to B3, C1 to C3) of the coil units (31-1 to 39-1) can change depending on the movement or displacement of the magnet (130A).

[0283] For example, output signals (SH1, SH2, SH3) supplied to coil units (e.g., 31-1 to 33-1) that overlap with the magnet (130A) in a direction perpendicular to the first direction may have a preset phase difference. For example, the preset phase difference may be a multiple of G of the preset phase value. For example, G may be a natural number greater than or equal to 1. For example, output signals (SH1, SH2, SH3) supplied to coil units (e.g., 31-1 to 33-1) that overlap with the magnet (130A) in the optical axis direction may be signals having a three-phase phase.

[0284] For each stage, three coil units (e.g., 31-1 to 33-1) overlapping with the magnet (130A) can be supplied with three-phase output signals.

[0285] Also, referring to FIG. 11, as the magnet (130A) moves along the first direction, the coil units to which the output signals (SH1 to SH3, SL1 to SL3) are supplied can be changed. The change in the switching operation or stage of the switches of the switching unit (80A) can be determined according to the displacement or position of the magnet (130A).

[0286] Hereinafter, coil units that overlap with the magnet (130A) in a direction perpendicular to the first direction are referred to as “overlapping coil units.”

[0287] Referring to FIGS. 10A to 10G, the switching unit (80A) can supply any one of the output signals (SH1 to SH3, SL1 to SL3) of the amplifier unit (40-1) to at least one coil unit (hereinafter referred to as a “non-overlapping coil unit”) that does not overlap with the magnet (130A) in a direction perpendicular to the first direction.

[0288] At this time, the non-overlapping coil units may be positioned adjacent to the overlapping coil units. In addition, the non-overlapping coil units may be positioned consecutively adjacent to the overlapping coil units. For example, the number of non-overlapping coil units to which the output signals of the amplifier (40-1) are supplied may be three, two, or one.

[0289] For example, the non-overlapping coil unit may be positioned at least one of forward and backward of the overlapping coil units. For example, the forward or backward may be forward or backward in the first direction.

[0290] The correlation between the displacement or position (or displacement) of the magnet (130A) in the first direction and the output value of the position sensor unit (270A) can be preset through calibration. This correlation can be stored in the control unit (170A) using a mathematical formula, function, or algorithm. For example, the output value of the position sensor unit (270A) can be a data value or a code value.

[0291] For example, the output values ​​of the position sensor unit (270A) corresponding to the displacement or position of the magnet (130A) corresponding to the stages (stage 1 to stage 7) may be preset or stored in the first control unit (170A).

[0292] The position sensor unit (270A) can detect the displacement or position of the magnet (130A) in the first direction and output values ​​according to the detected results.

[0293] The first control unit (170A) receives the output values ​​of the position sensor unit (270A) and can control the control signals (R1 to RN) of the switching unit (80A) using the received output values ​​of the position sensor unit (270A).

[0294] The first control unit (170A) can control the control signals (R1 to RN) of the switching unit (80A) using at least one of the output values ​​of the sensors (71A to 71F) of the position sensor unit (270A).

[0295] The first control unit (170A) can change six coil units selected from among a plurality of coil units (31-1 to 31-9) using the output value of the position sensor unit (270A). That is, the first control unit (170A) can control the switching unit (80A) so that the six selected coil units can be changed. For example, three of the six selected coil units can overlap the first magnet (130A) in a direction perpendicular to the first direction, and the remaining three of the six selected coil units can not overlap the first magnet (130A) in a direction perpendicular to the first direction.

[0296] The control unit (170A) can control the switching unit (80A) to change from the current stage (e.g., stage 1) to the next stage (e.g., stage 2) based on the judgment result using the output values ​​of the sensors (71A to 71F) of the position sensor unit (270A).

[0297] For example, if the control unit (170A) determines that the output values ​​of the sensors (71A to 71F) of the position sensor unit (270A) correspond to stage 2 of FIG. 9b, it can control the switching unit (80A) as shown in FIG. 10b.

[0298] For example, the control unit (170A) can control the switching unit (80A) using the output values ​​of sensors that overlap the magnet (130A) in a direction perpendicular to the first direction. For example, the control unit (170A) can control the switching unit (80A) using the output values ​​of sensors (e.g., 71A and 71B, 71B and 71C, 71C and 71D, 71D and 71E, or 71E and 71F) that overlap the magnet (130A) in a direction perpendicular to the first direction.

[0299] The description of FIGS. 9 to 11 can be applied or analogically applied to the amplifier unit (40-2), the switching unit (80B), the coil units (41-1 to 49-1) of the second coil, the control unit (170B), and the position sensor unit (170B).

[0300] In an embodiment, nine coil units (31-1 to 39-1) can be driven by supplying six outputs of three amplifiers (30A, 30B, 30C) to nine coil units using a switching unit (80). The number of amplifiers for driving the coil units can be reduced, and power consumption can be reduced.

[0301] Additionally, by driving nine coil units (31-1 to 39-1) arranged in the first direction with three-phase signals (SH1 to SH3, SL1 to SL3), the stroke range of the lens assembly (622) can be increased.

[0302] In addition, since the driving signals (SH1 to SH3, SL1 to SL3) are supplied to adjacent six coil units among the nine coil units (31-1 to 39-1) by the switching unit (80A) depending on the displacement or position of the magnet (130A), the power consumption for the zooming operation or focusing operation can be reduced.

[0303] The image sensor (810) can receive and detect light passing through the lens unit (620) and convert the detected light into an electrical signal. For example, the image sensor (810) can include an imaging area for detecting light. Here, the imaging area can be expressed as an effective area, a light-receiving area, or an active area. For example, the imaging area can include a plurality of pixels on which an image is formed.

[0304] The image sensor (810) may be positioned at the rear of the lens assembly (624). For example, the image sensor (810) may be positioned to face the lens array of the lens assembly (624) in the first direction.

[0305] The camera device (200) may include a filter (560) disposed between the image sensor (810) and the lens unit (620) and facing the image sensor (810) in a first direction.

[0306] The filter (560) may block light of a specific frequency band from passing through the lens unit (620) from entering the image sensor (810). For example, the filter (560) may be an infrared cut filter. In another embodiment, the filter (560) may be an infrared pass filter. For example, the filter (560) may be arranged parallel to an xy plane perpendicular to the first direction.

[0307] The camera device (200) may include a circuit board (800) on which an image sensor (810) is arranged or mounted. The image sensor (810) may be electrically connected to the circuit board (800). Additionally, the circuit board (800) may be electrically connected to the circuit board (190). In other embodiments, the circuit board (800) may be electrically separated from or spaced apart from the circuit board (190).

[0308] The camera device (200) may include an OIS actuator (not shown) for driving the OIS. The OIS actuator may be disposed in front of the lens assembly (640). The actuator may change the path of light. For example, the OIS actuator may include an optical member that changes the path of light. The optical member may include a reflector that may change the direction in which light travels. For example, the optical member may be a prism that reflects light. In another embodiment, the optical member may be a mirror. The optical member may change the optical path of incident light to be parallel to the central axis (Z) of the lens unit (620) or in the direction of the optical axis of the lens unit, thereby changing the incident light into parallel light. The parallel light may then pass through the lens assemblies (622, 624) to reach the image sensor (810).

[0309] For example, the OIS actuator can move the optical member, thereby performing an OIS (Optical Image Stabilizer) operation to correct for hand shake. For example, the OIS actuator can rotate the optical member around the X-axis or around the Y-axis, and move an image formed on the image sensor (810) in the X-axis direction or the Y-axis direction. The OIS actuator can include a coil and a magnet for moving the optical member.

[0310] FIG. 12A is a block diagram of a camera device (200-1) including an actuator (100-1) according to another embodiment, and FIG. 12B shows a block diagram of a circuit board (190-1), a control unit (170C), a first coil (120A), and a second coil (120B) of FIG. 12A. The same reference numerals as in FIG. 1 represent the same configurations, and descriptions of the same configurations are simplified or omitted.

[0311] The camera device (200) of FIG. 1 includes a first control unit (170A) for controlling the driving of the coil units (31-1 to 39-1) of the first coil (120A) for the zooming function and a second control unit (170B) for controlling the driving of the coil units (41-1 to 49-1) of the second coil (120B) for the focusing function, but the camera device (200-1) of FIGS. 12A and 12B can control the driving of the coil units (31-1 to 39-1) for the zooming function and the driving of the coil units (41-1 to 49-1) of the second coil (120B) for the focusing function by one control unit (170C).

[0312] The circuit board (190-1) may include a first substrate (192), a second substrate (194), and a third substrate (196) connecting the first substrate (192) and the second substrate (193). The third substrate (196) may conductively or electrically connect the first substrate (192) and the second substrate (194). For example, the third substrate (196) may be disposed on the third side of the housing (610) connecting the first side (612) and the second side (614) of the housing (610).

[0313] The control unit (170C) may be placed on or coupled to the first substrate (192) or the second substrate (194) of the circuit board (190-1). For example, the control unit (170C) may be conductively or electrically connected to the first substrate (192) or the second substrate (194) of the circuit board (190-1).

[0314] The control unit (170C) may include the first control unit (170A) of FIG. 2 or FIG. 4 and the control unit (170B) of FIG. 3 or FIG. 5. The description of the first control unit (170A) and the second control unit (170B) may be applied or analogized to the control unit (170C) of FIG. 12A and FIG. 12B.

[0315] For example, the control unit (170C) may be disposed on the second substrate (194). The control unit (170C) may supply the first group signals (SH1 to SH3) and the second group signals (SL1 to SL3) to the coil units (31-1 to 39-1) of the first coil (120A) through the second substrate (194). In addition, the control unit (170C) may supply the first group signals (SH4 to SH6) and the second group signals (SL4 to SL6) to the coil units (41-1 to 49-1) of the second coil (120B) through at least one of the second substrate (192) and the third substrate (196).

[0316] In another embodiment, the control unit (170C) may be disposed on the first substrate (192). The control unit (170C) may supply the first group signals (SH4 to SH6) and the second group signals (SL4 to SL6) to the coil units (41-1 to 49-1) of the second coil (120B) through the first substrate (192). In addition, the control unit (170C) may supply the first group signals (SH1 to SH3) and the second group signals (SL1 to SL3) to the coil units (31-1 to 39-1) of the first coil (120A) through at least one of the first substrate (192) and the third substrate (196). In the embodiment of FIG. 12A, the third substrate (196) may serve to transmit a signal output from the control unit (170C).

[0317] The actuators in typical camera devices utilize a voice coil motor (VCM) structure, controlling lens movement using coils and permanent magnets that receive in-phase driving signals. This approach has limitations in driving power and a short stroke or range of movement of the lens assembly.

[0318] In an embodiment, the power to drive the lens assembly (622 or 624) can be increased by applying signals having different phases to different coil units (e.g., 31-1 to 39-1 or 41-1 to 49-1). In addition, in an embodiment, a low-power and compact camera device can be implemented using an amplifier, for example, a current driving circuit in the form of an H-bridge circuit.

[0319] In addition, while one amplifier (or one H-bridge circuit) is generally required to drive one coil unit, in the embodiment, nine coil units can be driven by three amplifiers using a switching unit (80). This can reduce the number of circuit elements or parts, and reduce power consumption.

[0320] In the embodiment, the lens holder (29) can be moved in the first direction on the coil units (31-1 to 31-9) of the first coil (120A). The lens holder (39) can be moved in the first direction on the coil units (41-1 to 41-9) of the second coil (120B).

[0321] The actuator (100) may further include a yoke (48) disposed or coupled to the first substrate (192). In addition, the actuator (100) may further include a yoke (49) disposed or coupled to the second substrate (194). The yoke (48) may increase an electromagnetic force due to an interaction between the first magnet (130A) and the first coil (120A), and the yoke (49) may increase an electromagnetic force due to an interaction between the second magnet (130B) and the second coil (120B).

[0322] In the embodiment, by sequentially arranging nine coil units (31-1 to 39-1) in the first direction, the moving distance that the lens holder (29) or the first magnet (130A) can move can be increased, thereby increasing the stroke range of the lens assembly (622A) for the zooming operation.

[0323] In addition, in the embodiment, by sequentially arranging nine coil units (41-1 to 49-1) in the first direction, the movement distance that the lens holder (39-1) or the second magnet (130B) can move can be increased, thereby increasing the stroke range of the lens assembly (624A) for AF operation.

[0324] In addition, the camera device (200 or 200-1) according to the embodiment may be included in an optical instrument that forms an image of an object in space by using the characteristics of light such as reflection, refraction, absorption, interference, and diffraction, and aims to enhance the visual acuity of the eye, or to record and reproduce an image using a lens, or to optically measure, propagate or transmit an image, etc. For example, the optical instrument according to the embodiment may be a mobile phone, a cell phone, a smart phone, a portable smart device, a digital camera, a laptop computer, a digital broadcasting terminal, a PDA (Personal Digital Assistants), a PMP (Portable Multimedia Player), a navigation device, etc., but is not limited thereto, and any device for taking a video or a photo may be used.

[0325] Fig. 14 shows a perspective view of an optical device (200A) according to an embodiment, and Fig. 14 shows a configuration diagram of the optical device (200A) shown in Fig. 13.

[0326] Referring to FIGS. 13 and 14, an optical device (200A, hereinafter referred to as a portable “terminal”) may include a body (850), a wireless communication unit (710), an A / V input unit (720), a sensing unit (740), an input / output unit (750), a memory unit (760), an interface unit (770), a control unit (780), and a power supply unit (790).

[0327] The body (850) illustrated in Fig. 13 is in the form of a bar, but is not limited thereto, and may have various structures such as a slide type, folder type, swing type, or swivel type in which two or more sub-bodies are connected to enable relative movement.

[0328] The body (850) may include a case (casing, housing, cover, etc.) that forms the exterior. For example, the body (850) may be divided into a front case (851) and a rear case (852). Various electronic components of the terminal may be built into the space formed between the front case (851) and the rear case (852).

[0329] The wireless communication unit (710) may be configured to include one or more modules that enable wireless communication between the terminal (200A) and a wireless communication system or between the terminal (200A) and a network in which the terminal (200A) is located. For example, the wireless communication unit (710) may be configured to include a broadcast reception module (711), a mobile communication module (712), a wireless Internet module (713), a short-range communication module (714), and a location information module (715).

[0330] The A / V (Audio / Video) input unit (720) is for inputting audio signals or video signals and may include a camera (721) and a microphone (722), etc.

[0331] The camera (721) may include a camera device (200) according to an embodiment.

[0332] The sensing unit (740) can detect the current state of the terminal (200A), such as the open / close state of the terminal (200A), the position of the terminal (200A), the presence or absence of user contact, the orientation of the terminal (200A), and the acceleration / deceleration of the terminal (200A), and generate a sensing signal to control the operation of the terminal (200A). For example, if the terminal (200A) is in the form of a slide phone, it can sense whether the slide phone is opened or closed. In addition, it is responsible for sensing functions related to whether power is supplied to the power supply unit (790), whether the interface unit (770) is connected to an external device, etc.

[0333] The input / output unit (750) is for generating input or output related to visual, auditory, or tactile senses. The input / output unit (750) can generate input data for controlling the operation of the terminal (200A) and can also display information processed in the terminal (200A).

[0334] The input / output unit (750) may include a key pad unit (730), a display module (751), an audio output module (752), and a touch screen panel (753). The key pad unit (730) may generate input data through key pad input.

[0335] The display module (751) may include a plurality of pixels whose colors change according to an electrical signal. For example, the display module (751) may include at least one of a liquid crystal display, a thin film transistor-liquid crystal display, an organic light-emitting diode, a flexible display, and a 3D display.

[0336] The audio output module (752) can output audio data received from the wireless communication unit (710) in a call signal reception mode, call mode, recording mode, voice recognition mode, or broadcast reception mode, or can output audio data stored in the memory unit (760).

[0337] The touch screen panel (753) can convert a change in electrostatic capacity caused by a user's touch on a specific area of ​​the touch screen into an electrical input signal.

[0338] The memory unit (760) may store programs for processing and controlling the control unit (780), and may temporarily store input / output data (e.g., phone book, messages, audio, still images, photographs, videos, etc.). For example, the memory unit (760) may store images captured by the camera (721), such as photographs or videos.

[0339] The interface unit (770) serves as a passage connecting to an external device connected to the terminal (200A). The interface unit (770) receives data from the external device, supplies power and transmits it to each component inside the terminal (200A), or allows data inside the terminal (200A) to be transmitted to the external device. For example, the interface unit (770) may include a wired / wireless headset port, an external charger port, a wired / wireless data port, a memory card port, a port for connecting a device equipped with an identification module, an audio I / O (Input / Output) port, a video I / O (Input / Output) port, and an earphone port.

[0340] The control unit (controller, 780) can control the overall operation of the terminal (200A). For example, the control unit (780) can perform related control and processing for voice calls, data communications, video calls, etc.

[0341] The control unit (780) may be equipped with a multimedia module (781) for multimedia playback. The multimedia module (781) may be implemented within the control unit (780) or may be implemented separately from the control unit (780).

[0342] The control unit (780) can perform pattern recognition processing to recognize handwriting input or drawing input performed on the touch screen as characters and images, respectively.

[0343] The power supply unit (790) can supply power required for the operation of each component by receiving external power or internal power under the control of the control unit (780).

[0344] The features, structures, effects, etc. described in the embodiments above are included in at least one embodiment of the present invention, and are not necessarily limited to just one embodiment. Furthermore, the features, structures, effects, etc. exemplified in each embodiment can be combined or modified in other embodiments by those skilled in the art to which the embodiments pertain. Therefore, the contents related to such combinations and modifications should be construed as being included within the scope of the present invention.

[0345] The embodiment can be used in an actuator and a camera device including the same, which can reduce the number of parts and reduce power consumption required for a zooming operation and an autofocus operation.

Claims

1. Lens holder movable in the first direction; A magnet placed in the above lens holder; A coil comprising a plurality of coil units sequentially arranged in the first direction; and A control unit is included that supplies a plurality of outputs having different phase differences to selected coil units among the plurality of coil units, An actuator wherein the selected coil units include coil units that overlap the magnet in a direction perpendicular to the first direction and at least one coil unit that does not overlap the magnet in a direction perpendicular to the first direction.

2. In paragraph 1, The above overlapping coil units are actuators of three adjacent coil units.

3. In paragraph 1, An actuator wherein at least one non-overlapping coil unit is positioned in front or behind the overlapping coil units in the first direction.

4. In paragraph 1, An actuator wherein at least one of the non-overlapping coil units is adjacent to the overlapping coil units.

5. In paragraph 2, The above multiple outputs supplied to the above overlapping coil units are three-phase signal actuators.

6. In paragraph 1, It includes a position sensor section that detects the displacement of the magnet in the first direction and outputs an output value, The above control unit is an actuator that changes coil units selected from among the plurality of coil units using the output value of the position sensor unit.

7. Lens holder movable in the first direction; A magnet placed in the above lens holder; A coil comprising a plurality of coil units sequentially arranged in the first direction; and Including a control unit, The above control unit, An amplifying unit including a first amplifier outputting a first output and a second output, a second amplifier outputting a third output and a fourth output, and a third amplifier outputting a fifth output and a sixth output; and An actuator including a switching unit selectively supplying the first to sixth outputs to six coil units among the plurality of coil units.

8. In paragraph 7, The above switching unit selectively supplies the first to sixth outputs to ends of six adjacent coil units among the plurality of coil units, An actuator in which the other ends of the above plurality of coil units are commonly connected to each other.

9. In paragraph 7, An actuator wherein the first output, the third output, and the fifth output have preset phase differences, and the second output, the fourth output, and the sixth output have preset phase differences.

10. In paragraph 9, An actuator having a preset phase difference of 120 degrees.

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