KR20170085704A - Camera module - Google Patents

Abstract

One embodiment of the camera module includes a lens driving device having a base at a lower portion thereof; A filter holder attached to the base and to which the filter is mounted; And a sensor holder disposed at a lower portion of the filter holder and equipped with an image sensor and provided as a circuit board, wherein a bonding portion between the base and the filter holder is formed with a projection or depression on the base, May be provided in a shape corresponding to the base.

Description

Camera module {Camera module}

The embodiment relates to a camera module of a rigid structure having a high shear strength even when an external force is applied.

The contents described in this section merely provide background information on the embodiment and do not constitute the prior art.

In recent years, IT products such as mobile phones, smart phones, tablet PCs, and notebooks, which incorporate ultra-compact digital cameras, are actively under development.

In the case of a camera module mounted on a small electronic device such as a smart phone, the camera module may include a lens driving device and a holder coupled to the lens driving device.

In the case of the lens driving device, it may include at least one lens, and may include an auto focusing device that focuses the lens in the optical axis direction, and an image stabilization device that prevents deterioration of image quality due to user's shaking.

The holder may include a sensor holder coupled to the lens driving device and mounted with an image sensor on which an image of an object is formed, and a filter holder for filtering light of a specific wavelength band among lights incident on the image sensor.

In the case where the lens driving device and the holder are bonded by adhesion, when an external force acts on the lens driving device and the holder in different directions, a shear force may be applied to the bonding portion between the lens driving device and the holder .

When the shearing force is repeatedly applied to the adhesive portion, the adhesive portion may be damaged. In severe cases, the adhesive portion may be broken and the lens driving hole and the holder may be separated from each other.

Therefore, the embodiment relates to a camera module of a rigid structure having a high shear strength even when an external force is applied.

It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory and are intended to provide further explanation of the invention as claimed.

One embodiment of the camera module includes a lens driving device having a base at a lower portion thereof; A filter holder attached to the base and to which the filter is mounted; And a sensor holder disposed at a lower portion of the filter holder and equipped with an image sensor and provided as a circuit board, wherein a bonding portion between the base and the filter holder is formed with a projection or depression on the base, May be provided in a shape corresponding to the base.

The lens driving device includes: a bobbin installed to move in a first direction; A first coil installed on an outer circumferential surface of the bobbin; A housing having the bobbin installed therein; A first magnet coupled to the housing; An upper elastic member provided on the bobbin and supporting the bobbin; A lower elastic member provided below the bobbin and supporting the bobbin; A support member disposed on a side surface of the housing and supporting the movement of the housing in a second direction and / or a third direction; A second coil disposed to face the first magnet; The base disposed at a lower portion of the bobbin; And a printed circuit board mounted on the base.

The protrusion may be formed at a lower portion of the base, and the depression may be formed at an upper portion of the filter holder.

The protrusions may be formed in a pair of bar shapes symmetrical with respect to the center of the base along the sides of the base.

The depressions may be provided in the filter holder in a shape, position, and number corresponding to the protrusions.

The first distance defined by the distance between the lower surface of the protrusion and the bottom surface of the depressed portion may be 20 [mu] m to 150 [mu] m.

The second distance defined by the adhesive portion of the base excluding the protruding portion and the adhesive portion of the filter holder excluding the depressed portion may be 20 탆 to 150 탆.

The first distance and the second distance may be the same.

The space formed by the first distance and the second distance may be filled with an adhesive material.

And the second width defined by the width of the depression is larger than the first width defined by the width of the projection.

The difference between the second width and the first width may be 800 탆 to 170 탆.

The protrusion may be formed of a plurality of bosses having a shape of at least one of a circular, semi-circular, curved, and polygonal cross-section.

The depressed portion may be provided in the filter holder in a shape, position, and number corresponding to the boss.

The projection may be formed on an upper portion of the filter holder, and the depression may be formed on a lower portion of the base.

Another embodiment of the camera module includes a lens driving device having a base at a lower portion thereof; A filter holder attached to the base and to which the filter is mounted; And a sensor holder disposed at a lower portion of the filter holder and equipped with an image sensor and provided as a circuit board, wherein a bonding portion between the filter holder and the sensor holder is formed with a protrusion or depression in the filter holder, The sensor holder may be provided in a shape corresponding to the filter holder.

The sensor holder may be formed of a high temperature co-fired ceramic (HTCC) material.

In the embodiment, since the base is restricted by the projecting portion and the depressed groove to move excessively on the x-y plane with respect to the filter holder, it is possible to prevent the engagement portion from being damaged or destroyed by the shearing force.

Therefore, it is possible to prevent deterioration of the image quality of the image taken by the camera module due to excessive movement of the base relative to the filter holder, and to prevent malfunction or disconnection of the camera module due to damage or destruction of the coupling portion .

In the embodiment, the projecting portion and the corresponding depression are formed at the bonding portion between the filter holder and the sensor holder, so that even when a strong shearing force is applied to the bonding portion between the filter holder and the sensor holder, Can be prevented.

Therefore, it is possible to prevent degradation of the image quality of the camera module, malfunction, and stoppage of the camera module due to destruction of the adhesion portion between the filter holder and the sensor holder.

1 is a perspective view illustrating a camera module according to an exemplary embodiment of the present invention.
2 is an exploded perspective view showing a lens driving apparatus according to an embodiment.
3 is a perspective view illustrating a base, a filter holder, and a sensor holder according to an embodiment.
4 is an exploded perspective view illustrating a base, a filter holder, and a sensor holder according to one embodiment.
5 is a bottom view of the base according to one embodiment.
6 is a plan view of a filter holder according to one embodiment.
7 is a cross-sectional side view illustrating a state in which the base and the filter holder are coupled according to an embodiment.
8 is an enlarged view showing part A of Fig.
9 is a bottom view of a base according to another embodiment.
10 is a plan view showing a filter holder according to another embodiment.
11 is a bottom view of a base and a filter holder according to another embodiment.
12 is a plan view showing a sensor holder according to another embodiment.

Hereinafter, embodiments will be described in detail with reference to the accompanying drawings. The embodiments are to be considered in all aspects as illustrative and not restrictive, and the invention is not limited thereto. It is to be understood, however, that the embodiments are not intended to be limited to the particular forms disclosed, but are to include all modifications, equivalents, and alternatives falling within the spirit and scope of the embodiments. The sizes and shapes of the components shown in the drawings may be exaggerated for clarity and convenience.

The terms "first "," second ", and the like can be used to describe various components, but the components should not be limited by the terms. The terms are used only for the purpose of distinguishing one component from another. In addition, terms specifically defined in consideration of the constitution and operation of the embodiment are only intended to illustrate the embodiments and do not limit the scope of the embodiments.

In the description of the embodiments, when it is described as being formed on the "upper" or "on or under" of each element, the upper or lower (on or under Quot; includes both that the two elements are in direct contact with each other or that one or more other elements are indirectly formed between the two elements. Also, when expressed as "on" or "on or under", it may include not only an upward direction but also a downward direction with respect to one element.

It is also to be understood that the terms "top / top / top" and "bottom / bottom / bottom", as used below, do not necessarily imply nor imply any physical or logical relationship or order between such entities or elements, But may be used only to distinguish one entity or element from another entity or element.

Further, in the drawings, an orthogonal coordinate system (x, y, z) can be used. In the drawing, the x axis and y axis mean a plane perpendicular to the optical axis. For convenience, the optical axis direction (z axis direction) can be referred to as a first direction, the x axis direction as a second direction, and the y axis direction as a third direction .

1 is a perspective view illustrating a camera module according to an exemplary embodiment of the present invention. 2 is an exploded perspective view showing a lens driving apparatus 100 according to an embodiment.

An image stabilizer applied to a small-sized camera module of a mobile device such as a smart phone or a tablet PC is a device for preventing the outline of the photographed image from being formed due to the vibration caused by the shaking of the user at the time of shooting the still image Means a configured device.

In addition, the auto focusing apparatus is a device that automatically focuses the image of the subject on the image sensor 510 surface. In this embodiment, the optical module including a plurality of lenses may be moved in a first direction, or may be moved in a direction perpendicular to the first direction. In this case, Operation and / or auto focusing operation.

1, the camera module according to the embodiment may include a lens driving device 100, a filter holder 400, and a sensor holder 500. [

The lens driving apparatus 100 may have a base 210 disposed below the lens driving apparatus 100 and adhered to the filter holder 400. As described above, the lens driving apparatus 100 can perform the unintentional correction and / or autofocusing operation by moving the optical module composed of the plurality of lenses. The specific structure of the lens driving apparatus 100 will be described below with reference to Fig.

The filter holder 400 is bonded to the base 210, and the filter 410 can be mounted. The sensor holder 500 may be disposed under the filter holder 400, and may include an image sensor 510 and a circuit board.

The sensor holder 500 may include various driving drivers for driving the lens driving apparatus 100 in addition to the image sensor 510, a circuit for receiving a current or receiving an electric signal from an external device, Respectively.

Therefore, the sensor holder 500 may be provided as a circuit board. In addition, a connection board 600 for electrical connection with the sensor holder 500 and an external device such as a power source, a display device, a storage device, and the like can be coupled to the sensor holder 500.

The filter holder 400 and the sensor holder 500 will be described in detail below with reference to FIG. 3 and the following figures.

As shown in FIG. 2, the lens driving apparatus 100 (100) according to the embodiment may include a movable portion and a fixed portion. At this time, the movable part can perform the auto focusing function of the lens. The movable part may include a bobbin 110 and a first coil 120. The fixed part may include a first magnet 130, a housing 140, an upper elastic member 150, and a lower elastic member 160 have.

The bobbin 110 is installed to move in the first direction inside the housing 140 and has a first coil 120 disposed on the inner side of the first magnet 130 on the outer circumference, And the first coil 120. The first coil 120 and the second coil 120 can be reciprocated in a first direction in an inner space of the housing 140. [ The first coil 120 may be installed on the outer circumferential surface of the bobbin 110 to enable electromagnetic interaction with the first magnet 130.

Further, the bobbin 110 is elastically supported by the upper and lower elastic members 150 and 160, and can perform the auto focusing function by moving in the first direction.

The bobbin 110 may include a lens barrel (not shown) in which at least one lens is installed. The lens barrel may be coupled to the inside of the bobbin 110 in various ways.

For example, the lens barrel may be coupled to the bobbin 110 using an adhesive or the like. Further, the lens barrel can be coupled to the bobbin 110 in a screw-type manner. Alternatively, the one or more lenses may be formed integrally with the bobbin 110 without a lens barrel.

The lens coupled to the lens barrel may be composed of a single lens, or two or more lenses may be configured to form an optical system.

The auto focusing function is controlled according to the direction of the current, and the auto focusing function may be realized by moving the bobbin 110 in the first direction. For example, when the forward current is applied, the bobbin 110 can move upward from the initial position, and when the reverse current is applied, the bobbin 110 can move downward from the initial position. Alternatively, the amount of unidirectional current may be adjusted to increase or decrease the movement distance from the initial position in one direction.

The upper and lower surfaces of the bobbin 110 may have a plurality of upper support protrusions and lower support protrusions. The upper support protrusion may be provided in a cylindrical shape or a prismatic shape, and the upper elastic member 150 may be engaged and fixed. The lower support protrusions may be cylindrical or prismatic like the upper support protrusions, and the lower elastic members 160 may be engaged and fixed.

At this time, the upper elastic member 150 may have a through hole corresponding to the upper supporting protrusion, and the lower elastic member 160 may have a through hole corresponding to the lower supporting protrusion. The support protrusions and the through holes may be fixedly joined by an adhesive member such as a thermal fusion adhesive or an epoxy.

The housing 140 has a hollow column shape for supporting the first magnet 130, and may be formed in a substantially rectangular shape. The first magnet 130 may be coupled to the side surface of the housing 140. As described above, the bobbin 110, which is guided by the elastic members 150 and 160 and moves in the first direction, may be disposed inside the housing 140.

The upper elastic member 150 may be provided on the upper side of the bobbin 110 and the lower elastic member 160 may be provided on the lower side of the bobbin 110. The upper elastic member 150 and the lower elastic member 160 are coupled to the housing 140 and the bobbin 110 and the upper elastic member 150 and the lower elastic member 160 are coupled to the first And / or downward motion in the direction of the arrow. The upper elastic member 150 and the lower elastic member 160 may be formed of leaf springs.

As shown in FIG. 2, the upper elastic members 150 may be provided separately from each other. Each of the divided portions of the upper elastic member 150 can be supplied with different polarity currents or different powers through the multi-split structure. Also, the lower elastic member 160 may have a multi-split structure and may be electrically connected to the upper elastic member 150.

Meanwhile, the upper elastic member 150, the lower elastic member 160, the bobbin 110, and the housing 140 may be assembled through heat bonding and / or bonding using an adhesive or the like.

The base 210 is disposed at a lower portion of the bobbin 110, may be formed in a substantially rectangular shape, and the printed circuit board 250 may be disposed or seated.

A supporting groove having a corresponding size may be formed on the surface of the base 210 opposite to the portion on which the terminal surface 253 of the printed circuit board 250 is formed. The support groove is recessed to a certain depth from the outer circumferential surface of the base 210 so that the portion where the terminal surface 253 is formed is prevented from protruding outward or can be adjusted.

The support member 220 is disposed on the side of the housing 140 so as to be spaced apart from the housing 140 and has an upper side coupled to the upper elastic member 150 and a lower side connected to the base 210, The bobbin 110 and the housing 140 may be coupled to the member 231 so that the bobbin 110 and the housing 140 are movable in a second direction and / or a third direction perpendicular to the first direction, (Not shown).

Since the support members 220 according to the embodiment are respectively disposed on the outer surfaces of the corners of the housing 140, a total of four support members 220 may be installed symmetrically. Further, the support member 220 may be electrically connected to the upper elastic member 150. That is, for example, the support member 220 may be electrically connected to a portion where the through hole of the upper elastic member 150 is formed.

Since the support member 220 is formed separately from the upper elastic member 150, the support member 220 and the upper elastic member 150 can be electrically connected through a conductive adhesive, soldering, or the like. Accordingly, the upper elastic member 150 can apply an electric current to the first coil 120 through the electrically connected support member 220.

The support member 220 may be connected to the printed circuit board 250 through a through hole formed in the circuit member 231 and the printed circuit board 250. Or the support member 220 may be electrically soldered to a corresponding portion of the circuit member 231 without forming a through hole in the circuit member 231 and / or the printed circuit board 250. [

In FIG. 2, the linear supporting member 220 is shown as an embodiment, but the present invention is not limited thereto. That is, the support member 220 may be provided in the form of a plate-like member or the like.

The second coil 230 can perform the camera shake correction by moving the housing 140 in the second and / or third directions through the electromagnetic interaction with the first magnet 130.

Here, the second and third directions may include directions substantially in the x-axis (or the first direction), the y-axis (or the second direction) as well as the x- and y-axis directions. In other words, as seen from the driving aspect of the embodiment, the housing 140 may move parallel to the x- and y-axes, but may also be slightly inclined to the x- and y-axes when it is supported by the support member 220 have.

Therefore, the first magnet 130 needs to be installed at a position corresponding to the second coil 230.

The second coil 230 may be disposed to face the first magnet 130 fixed to the housing 140. In an embodiment, the second coil 230 may be disposed outside the first magnet 130. Alternatively, the second coil 230 may be installed at a predetermined distance below the first magnet 130.

According to the embodiment, a total of four second coils 230 may be provided on four side portions of the circuit member 231, but the present invention is not limited thereto. For example, one second coil 230, Only two can be installed, and four or more can be installed.

Or one in the first direction for the second direction, two in the second direction for the second direction, one in the third direction for the third direction, and two in the fourth direction for the third direction, . Alternatively, in this case, the first side and the fourth side may be adjacent to each other, and the second side and the third side may be adjacent to each other.

A circuit pattern may be formed on the circuit member 231 in the form of a second coil 230 or a separate second coil may be disposed on the circuit member 231. However, A circuit pattern may be formed directly on the member 231 in the form of a second coil 230.

Alternatively, the second coil 230 may be formed by winding the wire in a donut shape, or may be electrically connected to the printed circuit board 250 by forming the second coil 230 in the form of an FP coil.

The circuit member 231 including the second coil 230 may be installed or disposed on the upper surface of the printed circuit board 250 disposed on the upper side of the base 210. [ However, the present invention is not limited thereto. The second coil 230 may be disposed closely to the base 210, may be spaced apart from the base 210, may be separately formed on the substrate, It may also be laminated.

The printed circuit board 250 is electrically connected to at least one of the upper elastic member 150 and the lower elastic member 160 and is coupled to the upper surface of the base 210. As shown in FIG 2, A through hole into which the support member 220 is inserted may be formed at a position corresponding to an end of the support member 220. Or may be electrically connected and / or bonded to the support member without forming a through hole.

A terminal 251 may be disposed or formed on the printed circuit board 250 and the terminal 251 may be disposed on the bent terminal surface 253. A plurality of terminals 251 are disposed on the terminal surface 253 to supply a current to the first coil 120 and / or the second coil 230 by receiving external power. The number of terminals formed on the terminal surface 253 may be increased or decreased depending on the type of components that need to be controlled. In addition, the printed circuit board 250 may have one or more terminal surfaces 253.

The cover member 300 may be provided in a substantially box shape and may receive the moving part, the second coil 230, a part of the printed circuit board 250, and the like, and may be coupled with the base 210. The cover member 300 can protect the movable part, the second coil 230, the printed circuit board 250 and the like accommodated in the cover member 300 from being damaged and further includes a first magnet 130 The electromagnetic field generated by the first coil 120, the second coil 230, and the like may be restricted from leaking to the outside so that the electromagnetic field may be focused.

3 is a perspective view illustrating a base 210, a filter holder 400, and a sensor holder 500 according to an embodiment. 4 is an exploded perspective view showing a base 210, a filter holder 400, and a sensor holder 500 according to an embodiment.

A filter 410 may be mounted on the filter holder 400. The filter 410 may be mounted to the filter holder 400 at a position opposite to the lens barrel and the image sensor 510 in the first direction. The filter 410 filters light of a specific wavelength band among the light incident through the lens barrel, and the light that has passed through the filter 410 is incident on the image sensor 510.

At this time, the filter 410 may be provided as an infrared ray filter for blocking infrared rays from entering the image sensor 510, for example. The image sensor 510 can be mounted on the upper surface of the sensor holder 500, and the light passing through the filter 410 is incident to form an image.

The sensor holder 500 may be formed of a flexible material or a hard material. However, it may be appropriate that the connection substrate 600 electrically connected to the sensor holder 500 is formed of a flexible material which can be easily changed in position in order to easily connect the external devices and the camera module.

The base 210 and the filter holder 400 may be adhered to each other by using an adhesive such as an epoxy, for example. However, the bonding site joining the base 210 and the filter holder 400 may be vulnerable to externally applied shear force.

That is, when an external force is applied to the base 210 and the filter holder 400 in different directions on the xy plane, a shearing force may be applied to the adhesive portion, and when the shearing force is repeatedly applied, May be damaged.

The lens barrel and the image sensor 510 can be moved in a designed position on the xy plane when the adhesive portion is damaged by the shear force so that the focus alignment between the lens barrel and the image sensor 510 is broken, The image quality of an image photographed by the camera can be remarkably deteriorated.

Further, when repeatedly and continuously applied shearing force is applied to the adhesive portion, the bond between the base 210 and the filter holder 400 may be broken, and thus the lens driving apparatus including the base 210 100 may be separated from the filter holder 400 and the camera module may not operate.

Therefore, in the camera module of the embodiment, it is preferable that the adhesive portion between the base 210 and the filter holder 400 is constructed to withstand a strong shear force.

In the camera module of the embodiment, the following structure may be provided so that the adhesive portion can withstand a strong shearing force without being broken down.

As shown in FIG. 4, a concave-convex structure may be formed on a bonding portion between the base 210 and the filter holder 400. That is, the protrusion 1000 or the depression 2000 may be formed on the base 210, and the filter holder 400 may have a shape corresponding to the base 210.

For example, the protrusion 1000 may be formed on the base 210, and the filter holder 400 may have a depression 2000 corresponding to the base 210. At this time, the protrusion 1000 may be formed on the lower part of the base 210, and the depression 2000 may be formed on the filter holder 400.

5 is a bottom view of the base 210 according to one embodiment. 6 is a plan view of a filter holder 400 according to one embodiment. 4 to 6, the protrusions 1000 may include a pair of bars symmetrical to each other with respect to the center of the base 210 along the sides of the base 210, for example, ) Shape.

At this time, the depression (2000) may be provided in the filter holder (400) in a shape, position and number corresponding to the protrusion (1000). 6, the depression 2000 is formed along the sides of the filter holder 400 to correspond to the center of the filter holder 400, as shown in FIG. 6, to correspond to the protrusion 1000 shown in FIG. May be provided as a pair symmetrical with respect to each other.

4 and 5, the protrusion 1000 and the depression 2000 are provided in pairs, but the present invention is not limited thereto. For example, the protrusions 1000 and the depressions 2000 are provided in a pair in the vertical direction as shown in FIGS. 4 and 5, 400 as shown in FIG.

In addition, as shown in the drawing, a total of two pairs may be provided in the up-down direction and the left-right direction. In addition, the protrusion 1000 and the depression 2000 are not provided as a continuous one, but a plurality of small ones may be provided apart from each other.

However, it is appropriate that the protrusions 1000 and the depressions 2000 are provided in the shape and number corresponding to the positions corresponding to each other.

An adhesive material P is applied to an adhesive portion including the protrusion 1000 and the depression 2000 and the base 210 on which the protrusion 1000 is formed and the depressed portion 2000 can be coupled to each other.

Due to such a structure, an external force in different directions is applied to the base 210 and the filter holder 400 in the xy plane in the camera module in which the base 210 and the filter holder 400 are combined, The movement of the protrusion 1000 in the xy plane can be limited by the depressed recesses.

Therefore, since the base 210 is excessively moved on the xy plane with respect to the filter holder 400 by the protrusions 1000 and the depressed grooves, the adhesive portion is damaged or broken by the shearing force .

Therefore, it is possible to prevent degradation of the image quality of the image captured by the camera module due to excessive movement of the base 210 relative to the filter holder 400, It is possible to prevent a malfunction or an operation stop.

7 is a side cross-sectional view illustrating a coupling state of the base 210 and the filter holder 400 according to an embodiment. 8 is an enlarged view showing part A of Fig.

7 and 8, an adhesive material P is applied to an adhesion portion between the base 210 including the protrusion 1000 and the depression 2000 and the filter holder 400, The filter holder 210 and the filter holder 400 can be bonded to each other by bonding.

The first distance D1 defined as the distance between the lower surface of the protrusion 1000 and the bottom surface of the depression 2000 on the adhering portion may be 20 μm to 150 μm, Preferably from 30 탆 to 120 탆, more preferably from 50 탆 to 100 탆.

The second distance D2 defined by the distance between the adhesion portion of the base 210 and the adhesion portion of the filter holder 400 except for the depression 2000, For example, from 20 탆 to 150 탆, suitably from 30 탆 to 120 탆, and more suitably from 50 탆 to 100 탆.

The reason why the first distance D1 and the second distance D2 are provided is to carry out an active aligning process of coupling the lens driving device 100 and the filter holder 400. [

That is, the lens driving apparatus 100 is separately assembled, and the filter holder 400 and the sensor holder 500 are separately assembled. Then, the lens driving apparatus 100 is coupled to the filter holder 400, It is necessary to adjust the focal length in the first direction between the lens provided in the lens driving apparatus 100 and the image sensor 510 mounted in the sensor holder 500 , Which may proceed through an active alignment process.

The lens driving apparatus 100 including the base 210 is moved in the first direction with respect to the combined body of the filter holder 400 and the sensor holder 500 while the active alignment is proceeded, .

In order to adjust the focal length, an engineering margin is required between the base 210 and the filter holder 400. The first distance D1 and the second distance D2 may serve as the tolerances .

On the other hand, since the tolerance for the focal length adjustment may be the same in the first direction, the first distance D1 and the second distance D2 may be set to be the same.

When the focal distance adjustment is completed through the active alignment process, the base 210 and the filter holder 400 can be bonded. Therefore, after the active aligning process, the space formed by the first distance D1 and the second distance D2 is filled with the adhesive material P, and the adhesive material P is cured to form the base 210 And a combination of the filter holder 400 and the sensor holder 500 can be coupled to each other. At this time, the adhesive material (P) may be, for example, epoxy.

Although not shown in the figure, the adhesive material P may be provided on the base 210 and other parts disposed adjacent to the filter holder 400, in addition to the protrusion 1000 and the portion adjacent to the depression 2000. [ For example, on the side surface of the base 210, on the sides of the filter holder 400 and the sensor holder 500, and on the upper surface of the sensor holder 500.

This is for forming a more rigid coupling between the lens driving device 100 and the combination of the filter holder 400 and the sensor holder 500.

8, the second width W2 defined by the width of the depression 2000 may be larger than the first width W1 defined by the width of the protrusion 1000 have. At this time, the difference between the second width W2 and the first width W1 may be, for example, 80 μm to 170 μm, and suitably 100 μm to 150 μm.

This structure is for adjusting the lens driving device to be arranged at a position designed on the x-y plane with respect to the combination of the filter holder 400 and the sensor holder 500 in the active alignment process.

That is, in order to arrange the lens driving device at a position designed on the xy plane with respect to the combination of the filter holder 400 and the sensor holder 500, the lens driving device 100 is moved in the xy plane in the active alignment process A tolerance is required between the protrusion 1000 and the depression 2000. The width measured by the difference between the second width W2 and the first width W1 plays a role of the tolerance can do.

As described above, the adhesive material P is filled in the spaces formed by the widths measured by the difference between the second width W2 and the first width W1, and is cured to be transferred to the lens driving apparatus 100 The combination of the filter holder 400 and the sensor holder 500 can be coupled to each other.

9 is a bottom view of a base 210 according to another embodiment. 10 is a plan view showing a filter holder 400 according to another embodiment.

As shown in FIG. 9, the protrusion 1000 may be provided with a plurality of bosses 1100 (bosses). The bosses 1100 may be provided on the lower surface of the base 210 and the number and positions of the bosses 1100 may be appropriately selected according to the size and shape of the base 210 and the filter holder 400 .

In FIG. 9, the boss 1100 is shown in a circular shape in section, but in another embodiment, for example, the cross section may be formed in a semicircular shape, a curved shape, a polygonal shape, or the like.

The depression (2000) may be provided in the filter holder (400) in a shape, position, and number corresponding to the boss (1100). At this time, the cross-sectional area of the depression 2000 may be larger than the cross-sectional area of the boss 1100.

This is because the lens driving apparatus 100 is driven by the filter 100 in the course of the active alignment process of coupling the lens driving apparatus 100 to the combined body of the filter holder 400 and the sensor holder 500, To assure a tolerance for adjusting the assembled body of the holder 400 and the sensor holder 500 to be arranged at a designed position on the xy plane.

In addition, as described above, in order to adjust the focal length in the first direction during the active alignment process, the length of the boss 1100 in the first direction is smaller than the depth in the first direction of the depression 2000 May be appropriate.

The protrusion 1000 may be formed on the upper portion of the filter holder 400 and the depression 2000 may be formed on the lower portion of the base 210. [

This is the same as or very similar to the structure described with reference to FIGS. 3 to 10, except that the part where the protrusion 1000 is formed and the part where the depression 2000 is formed are exchanged. Therefore, repetitive description of the specific structure is omitted.

11 is a bottom view of a base 210 and a filter holder 400 according to yet another embodiment. 12 is a plan view showing a sensor holder 500 according to another embodiment.

In FIG. 11, the base 210 and the filter holder 400 are shown coupled to each other. Such a coupling structure may be provided, for example, with the structure described with reference to FIGS. 3 to 10.

A protruding portion 1000 or a depressed portion 2000 is formed in the filter holder 400 so that the sensor holder 500 is attached to the filter holder 400 and the sensor holder 500, And may be provided in a shape corresponding to the filter holder 400.

11 and 12, the protrusion 1000 is formed on the lower surface of the filter holder 400 and the protrusion 1000 corresponding to the protrusion 1000 is formed on the upper surface of the sensor holder 500 Position, shape, and number of depressions 2000 may be formed.

The protrusion 1000 and the depression 2000 corresponding to the protrusion 1000 are formed on the adhesion portion between the filter holder 400 and the sensor holder 500 so that adhesion between the filter holder 400 and the sensor holder 500 Even when a strong shearing force is applied to the site, damage or destruction of the adhesive site can be prevented.

Therefore, it is possible to prevent the degradation of the image quality, the malfunction, and the operation stop of the camera module due to the destruction of the adhesion site between the filter holder 400 and the sensor holder 500.

3 to 10, the protrusion 1000 may include a plurality of bosses 1100 formed in a circular, semicircular, curved, polygonal, or other shape in section, 2000) may be provided in a shape, position, and number corresponding to the bosses 1100.

The boss 1100 may be formed in the sensor holder 500 and the depression 2000 may be formed in the filter holder 400 in a shape, position, and number corresponding to the boss 1100 .

When the protrusion 1000 or the depression 2000 is formed in the sensor holder 500, the protrusion 1000 or the depression 2000 should not be deformed. Therefore, As shown in FIG.

At this time, the sensor holder 500 made of the hard material may be formed of, for example, a high temperature co-fired ceramic (HTCC) material.

At this time, the entire sensor holder 500 need not be made of a hard material, but at least the adhesive portion needs to be formed of a hard material. Therefore, at least the adhesive portion of the sensor holder 500 may be formed of, for example, a high temperature co-fired ceramic material.

While only a few have been described above with respect to the embodiments, various other forms of implementation are possible. The technical contents of the embodiments described above may be combined in various forms other than the mutually incompatible technologies, and may be implemented in a new embodiment through the same.

100: lens driving device
400: Filter holder
410: filter
500: Sensor holder
510: Image sensor
600: connecting board
1000: protrusion
1100: Boss
2000: Depression

Claims (16)

A lens driving device having a base at a lower portion thereof;
A filter holder attached to the base and to which the filter is mounted; And
A sensor holder disposed at a lower portion of the filter holder and equipped with an image sensor,
Lt; / RTI >
Wherein an adhesion portion between the base and the filter holder
Wherein a protrusion or depression is formed in the base, and the filter holder is provided in a shape corresponding to the base. The method according to claim 1,
Wherein the lens driving device comprises:
A bobbin installed to move in a first direction;
A first coil installed on an outer circumferential surface of the bobbin;
A housing having the bobbin installed therein;
A first magnet coupled to the housing;
An upper elastic member provided on the bobbin and supporting the bobbin;
A lower elastic member provided below the bobbin and supporting the bobbin;
A support member disposed on a side surface of the housing and supporting the movement of the housing in a second direction and / or a third direction;
A second coil disposed to face the first magnet;
The base disposed at a lower portion of the bobbin; And
And a printed circuit board mounted on the base. The method according to claim 1,
Wherein the protrusion is formed on a lower portion of the base, and the depression is formed on an upper portion of the filter holder. The method of claim 3,
The projection
And a pair of bars symmetrical with respect to a center of the base along the sides of the base. 5. The method of claim 4,
Wherein the depression comprises:
And the filter holder is provided with a shape, a position, and a number corresponding to the protrusions. The method of claim 3,
Wherein the first distance defined by the distance between the lower surface of the protrusion and the bottom surface of the depression is 20 mu m to 150 mu m. The method according to claim 6,
And a second distance defined by a distance between the adhesive portion of the base except for the protrusion and the adhesive portion of the filter holder except for the depression is 20 to 150 占 퐉. 8. The method of claim 7,
Wherein the first distance and the second distance are the same. 8. The method of claim 7,
Wherein a space formed by the first distance and the second distance is filled with an adhesive material. The method of claim 3,
Wherein the second width defined by the width of the depression is greater than the first width defined by the width of the projection. 11. The method of claim 10,
Wherein a difference between the second width and the first width is 80 mu m to 170 mu m. The method of claim 3,
The projection
Wherein the base includes a plurality of bosses formed in a shape of at least one of circular, semicircular, curved, and polygonal cross-sections. 13. The method of claim 12,
Wherein the depression comprises:
And the filter holder is provided in a shape, position, and number corresponding to the boss. The method according to claim 1,
Wherein the protrusion is formed on an upper portion of the filter holder, and the depression is formed on a lower portion of the base. A lens driving device having a base at a lower portion thereof;
A filter holder attached to the base and to which the filter is mounted; And
A sensor holder disposed at a lower portion of the filter holder and equipped with an image sensor,
Lt; / RTI >
Wherein an adhesive portion between the filter holder and the sensor holder
Wherein a protrusion or depression is formed in the filter holder, and the sensor holder is provided in a shape corresponding to the filter holder. 16. The method of claim 15,
The sensor holder includes:
A camera module formed from High Temperature Co-fired Ceramic (HTCC) material.

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