KR101567063B1 - Camera Module - Google Patents

Abstract

An embodiment relates to a camera module.

A camera module according to an embodiment includes: a lens unit; A holder coupled to an upper portion of the lens unit; A circuit board coupled to a lower portion of the holder and having an image sensor mounted on an upper surface thereof; And an electromagnetic wave shielding member surrounding the outer circumferential surface of the holder and being elastically coupled to the circuit board by a fixing hook formed at a lower portion thereof.

Camera module, electromagnetic wave

Description

Camera module {Camera module}

An embodiment relates to a camera module.

2. Description of the Related Art Generally, various mobile communication terminals such as a cellular phone, a CDMA phone, a PDA, etc. have network transmission and multimedia functions of daily information.

In recent years, there has been a great increase in demand for mobile communication terminals containing camera modules. When a palm-sized device having a built-in digital camera such as the PDA and the cellular phone is used, .

However, as the camera module becomes more sophisticated and highly functional, a large amount of electromagnetic interference (EMI) is generated in the camera module, thereby causing problems such as signal noise and lowered call sensitivity in the camera module.

Embodiments provide a camera module that blocks external radiation and internal influx of harmful electromagnetic waves.

A camera module according to an embodiment includes: a lens unit; A holder coupled to an upper portion of the lens unit; A circuit board coupled to a lower portion of the holder and having an image sensor mounted on an upper surface thereof; And an electromagnetic wave shielding member surrounding the outer circumferential surface of the holder and being elastically coupled to the circuit board by a fixing hook formed at a lower portion thereof. The electromagnetic wave shielding member may surround the outer circumferential surface of the holder and the outer circumferential surface of the circuit board. The fixing hook may be integrally formed on a lower portion of the electromagnetic wave shielding member. The outer surface of the electromagnetic wave shielding member may surround the outer circumferential surface of the holder without an open area. A bottom of the circuit board may have a groove to which the fixing hook is fastened and a ground terminal in the groove. The fixing hook may be electrically connected directly to the ground terminal of the groove.

A camera module according to another embodiment includes: a holder in which a lens unit is coupled to an upper portion and a circuit board on which an image sensor is mounted is coupled to a lower portion; A holder coupled to the inside of the housing so that the lens is located at an upper side, and a socket electrically connected to the circuit board; And an electromagnetic wave shielding member that at least partially surrounds the outer circumferential surface of the holder and the socket and is resiliently coupled to the socket by a fixing hook formed at a lower portion thereof. The fixing hook may be integrally formed on a lower portion of the electromagnetic wave shielding member. The outer surface of the electromagnetic wave shielding member may surround the outer circumferential surface of the socket without an open area. The socket may have a groove in which the fixing hook is fastened and a ground terminal in the groove. The fixing hook may be electrically connected directly to the ground terminal of the groove.

According to the camera module according to the embodiment, since the electromagnetic wave shielding member is assembled to enclose at least a part of the camera module and is electrically connected to the ground terminal, it is possible to prevent external electromagnetic waves or noise from being introduced into the camera module, The electromagnetic wave generated inside the camera module is prevented from being radiated to the outside.

In addition, by forming the fixing hook for coupling at the lower part of the electromagnetic wave shielding member, it is possible to remove the open portion of the electromagnetic wave shielding member to form the existing coupling groove, thereby improving the electromagnetic wave shielding performance.

Hereinafter, camera modules according to embodiments will be described in detail with reference to the accompanying drawings.

In the drawings, the same reference numerals are given to the same constituent elements as in the following drawings even if they are shown in different drawings, and the same reference numerals as possible Detailed description of functions and configurations is omitted.

1 is an exploded perspective view of a camera module having an electromagnetic wave shielding member according to an embodiment of the present invention.

1, the camera module 100 includes a lens unit 110 including a plurality of lenses, a holder 130 coupled to the lens unit 110, And an electromagnetic wave shielding member 120 surrounding the outer circumferential surface of the holder 130.

The holder 130 is a housing member having an upper portion mounted with the lens portion 110 and an end for mounting an IR filter therein, and may be formed of plastic or metal.

The lens unit 110 includes a plurality of lenses for receiving an optical image of a subject.

The lens unit 110 is an object that collects or diverges light to form an optical image, and a convex lens and a concave lens are combined and inserted into a mounting portion provided inside the holder 130.

Here, an IR filter may be disposed to block the infrared rays included in the optical image incident on the lens unit inside the holder 130.

The image sensor 140 is disposed on the upper surface of the circuit board 150 and the electrode pads 141 and 151 formed on the image sensor 140 and the circuit board 150 are connected by a wire bonding process And connected by a wire (not shown) made of a conductive material.

The image sensor 140 forms an image of infrared light blocked by infrared rays and converts the image into an electric signal. The image sensor 140 includes a pixel region composed of a plurality of pixels, a plurality of input / output terminals And an electrode pad.

The circuit board 150 functions to digitally process a video signal output from the image sensor 140.

Therefore, after the circuit board 150 is coupled to the lower portion of the holder 130, the lens portion 110 is inserted into the upper portion of the holder 130 and the electromagnetic interference member 120 is coupled to the holder 130 to surround the holder 130. So that the assembling of the camera module 100 is completed.

For example, after the circuit board 150 is adhered to the lower portion of the holder 130, the epoxy 130 is cured at a predetermined temperature to fix the holder 130.

At this time, a space is secured in the lower center portion of the holder 130, and the image sensor 140 is positioned in the secured space.

When the holder 130 and the circuit board 150 are bonded to each other, the lens unit 110 is inserted into the holder 150 and the electromagnetic wave shielding member 120 is assembled to surround the holder 130.

Here, the electromagnetic wave shielding member 120 may have a lens opening formed in a central portion thereof to expose the lens unit 110, and may be made of a metal material. Hereinafter, the coupling of the electromagnetic shielding member will be described in detail with reference to Figs. 3 and 4. Fig.

2 is an assembled view of a camera module having an electromagnetic wave shielding member according to another embodiment.

2, the camera module assembly 300 includes a lens 110, an image sensor, a holder 130 coupled with a circuit board, and a socket 200 electrically coupled to the holder 130. [ And an electromagnetic wave shielding member 120 surrounding at least a portion of the holder 130 and the socket 200.

Here, the combination of the socket-type camera module including the lens, the image sensor, and the circuit board is already well known to those skilled in the art, and a detailed description thereof will be omitted.

The electromagnetic wave shielding member 120 is formed so as to surround the upper surface of the holder 130 and the side surface of the socket 200. The lens opening 110 is formed at the center of the electromagnetic shielding member 120 to expose the lens 110. [

For example, the electromagnetic wave shielding member 120 at least partially surrounds the outer surface of the holder 130 and the socket 200, and the electromagnetic wave shielding member 120 may be made of a metal material. Hereinafter, the coupling of the electromagnetic shielding member will be described in detail with reference to Figs. 3 and 4. Fig.

FIGS. 3 and 4 are views showing details of the coupling of the electromagnetic wave shielding member according to the embodiment.

3 and 4, a plurality of fixing hooks 121 are formed in a lower portion of the electromagnetic wave shielding member 120 and a fixing groove 151 Is formed.

Here, the electromagnetic wave shielding member 120 has a lens opening formed at a central portion thereof to expose the lens portion 110, and surrounds the outer circumferential surface of the holder 130. The circuit board 150 may be made of a conventional PCB and is not limited thereto.

The fixing hooks 121 are formed integrally with at least a portion of the lower portion of the electromagnetic wave shielding member 120 and protrude therefrom.

For example, the fixing hooks 121 may be formed at four corners of the electromagnetic shielding member 120, or may be formed at only two corner portions facing each other.

The fixing hook 121 may be formed in an annular shape to be fastened to the fixing groove 151 formed on the circuit board 150, but is not limited thereto.

The fixing hook 121 is formed on the lower portion of the electromagnetic wave shielding member 120 to prevent the electromagnetic wave shielding performance from deteriorating due to the opening of a predetermined portion of the electromagnetic shielding member to form an existing coupling groove.

A fixing groove 151 is formed at a lower portion of the circuit board 150 and has a stepped portion to fasten the fixing hook 121 formed on the electromagnetic wave shielding member 120.

Here, the fixing groove 151 is not limited to being formed with a step, and a groove that can be fastened can be formed according to the shape of the fixing hook.

A ground terminal 152 is formed on the inner surface of the fixing groove 151. The ground terminal 152 may be formed by applying a conductive material to the inner surface of the fixing groove 151.

For example, a chamfer is formed with respect to angled corners of the circuit board 150, and a step is formed in the chamfered edge to form a fixing groove 151.

That is, the fixing groove 151 is formed at a corresponding position to be engaged with the fixing hook 121 of the electromagnetic wave shielding member 120.

The fixing hook 121 formed to protrude from the lower portion of the electromagnetic wave shielding member 120 when the electromagnetic wave shielding member 120 and the circuit board 150 are coupled to each other is connected to the circuit board 150 (Not shown).

At this time, the fixing hook 121 is electrically connected to the ground terminal 152 formed on the inner surface of the fixing groove 151.

Accordingly, electromagnetic waves or noise generated from the outside can be emitted to the outside through the ground terminal 152 to prevent the electromagnetic waves or noise from entering the camera module.

In addition, the electromagnetic wave generated from the image sensor in the camera module is suppressed to a maximum extent by the electromagnetic wave shielding member 120, grounded to the outside through the ground terminal 152, It is possible to prevent radiation.

The fixing hooks 121 and the fixing grooves 151 are formed at the edges of the electromagnetic wave shielding member 120 and the circuit board 150. However, The fixing hook 121 may be formed on at least a portion of the lower portion and the fixing groove 151 may be formed on the side surface or the lower surface of the circuit board 150 at the corresponding position.

Further, in another embodiment, the electromagnetic shield member may be combined with the socket. The electromagnetic wave shielding member is provided with a fixing hook, and the socket is provided with a fixing groove at a corresponding position thereof so as to be engaged with the fixing hook of the electromagnetic wave shielding member.

For example, the fixing hook integrally formed at the lower part of the electromagnetic wave shielding member is fastened and fixed to the fixing groove of the socket formed at the corresponding position. At this time, the fixing hook is electrically connected to the ground terminal formed on the inner surface of the fixing groove Lt; / RTI >

Here, the electromagnetic wave shielding member may be made of a conductive material, and electromagnetic waves or noise may be prevented from flowing into the camera module by the electromagnetic wave shielding member, and electromagnetic waves generated from the image sensor of the camera module may be radiated to the outside Can be prevented.

FIG. 5 is a cross-sectional view of an electromagnetic wave shielding member coupled to a circuit board according to an embodiment, and FIG. 6 is a sectional view of an electromagnetic wave shielding member coupled to a socket according to another embodiment.

5, a holder 130 and a circuit board 150 constituting a camera module are coupled to each other. An electromagnetic wave shielding member 120 is coupled to surround the holder 130.

The fixed hook 121 integrally formed on the lower part of the electromagnetic wave shielding member 120 is fastened and fixed to the fixing groove 151 formed on the circuit board 150. The inner surface of the fixing groove 151 is grounded, Terminals are formed and electrically connected to the fixed hook 121. That is, the electromagnetic wave shielding member 120 is coupled to surround the outer circumferential surface of the holder 130 to block the electromagnetic wave.

6, the electromagnetic wave shielding member 120 is coupled to surround the socket 200 in which the holder 130 constituting the camera module is inserted. A lens unit 110 and a circuit board (not shown) are coupled to the upper portion of the holder 130.

The fixed hook 121 integrally formed on the lower part of the electromagnetic wave shielding member 120 is fixed and fixed to a fixing groove 201 formed in the socket 200. The fixing groove 201 has a ground terminal And is electrically connected to the fixing hook 121.

That is, the electromagnetic wave shielding member 120 is coupled to cover the upper surface of the holder 130 and the side surface of the socket 200 to block electromagnetic waves.

Thus, in the embodiment, the electromagnetic wave shielding member is assembled so as to surround at least a part of the camera module and is electrically connected to the ground terminal, thereby preventing external electromagnetic waves or noise from flowing into the camera module, It is possible to prevent the electromagnetic wave generated in the antenna device from being radiated to the outside.

Further, by forming the fixing hook for coupling at the lower portion of the electromagnetic wave shielding member, the portion where the electromagnetic wave shielding member is opened to form the existing coupling groove can be removed, and the electromagnetic wave shielding performance can be improved.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments, but, on the contrary, It will be understood that various modifications and applications are possible. For example, each component specifically shown in the embodiments can be modified and implemented. It is to be understood that all changes and modifications that come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein.

1 is an exploded perspective view of a camera module provided with an electromagnetic wave shielding member according to an embodiment;

2 is an assembled view of a camera module provided with an electromagnetic wave shielding member according to another embodiment;

FIGS. 3 and 4 are views showing details of the coupling of the electromagnetic wave shielding member according to the embodiment. FIG.

5 is a cross-sectional view of an electromagnetic wave shielding member coupled to a circuit board according to an embodiment.

6 is a sectional view of an electromagnetic wave shielding member coupled to a socket according to another embodiment;

Claims (10)

A lens portion; A holder coupled to an upper portion of the lens unit; A circuit board coupled to a lower portion of the holder and having an image sensor mounted on an upper surface thereof; And And an electromagnetic wave shielding member surrounding the outer circumferential surface of the holder and elastically coupled to the circuit board by a fixing hook formed at a lower portion thereof, Wherein the electromagnetic wave shielding member surrounds the outer peripheral surface of the holder and the outer peripheral surface of the circuit board, Wherein the fixing hook is integrally formed at a lower portion of the electromagnetic wave shielding member, Wherein an outer surface of the electromagnetic wave shielding member surrounds an outer peripheral surface of the holder without an open area, And a groove for fastening the fixing hook to the lower portion of the circuit board. The method according to claim 1, Wherein the electromagnetic wave shielding member is made of a metal material. delete The method according to claim 1, Wherein the circuit board has a ground terminal in the groove to which the fixing hook is fastened, And the fixing hook is electrically connected to the ground terminal of the groove directly. delete A holder in which a lens part is coupled to an upper part and a circuit board on which an image sensor is mounted is coupled to a lower part; A socket coupled to the holder such that the lens is located at an upper side and electrically connected to the circuit board; And And an electromagnetic wave blocking member elastically coupled to the socket by a fixing hook formed at a lower portion thereof, The electromagnetic wave shielding member surrounds the upper surface of the holder and the side surface of the socket, Wherein an outer surface of the electromagnetic wave shielding member surrounds a side surface of the socket without an open area, And a lower portion of the socket has a groove to which the fixing hook is fastened. The method according to claim 6, Wherein the electromagnetic wave shielding member is made of a metal material. delete The method according to claim 6, Wherein the socket has a ground terminal in the groove to which the fixing hook is fastened, Wherein the fixing hook is electrically connected to the ground terminal directly. delete

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