KR20110005083A - Camera module junction jig - Google Patents

Abstract

PURPOSE: A camera module junction jig is provided to prevent failure of a camera module due to a crack of a lens barrel in a hot bar process by a first supplying unit and a first discharging unit for supply and discharge of cold air. CONSTITUTION: A camera module junction jig(100) includes a main body(140) and a circulating unit(150). The main body includes a mounting unit(141). A camera module(110) is mounted in a mounting unit. A circulating unit is installed in both upper and lower end of the main body. The circulating unit includes a first circulating unit(151) and a second circulating unit(155). The first circulating unit and the second circulating unit perform supply and discharge of air of different temperature inside the main body.

Description

Camera module junction jig

The present invention relates to a camera module bonding jig, and more particularly, to a camera module bonding jig having a circulation unit for supplying air having different temperatures and discharging them to the outside.

With the trend toward miniaturization and slimming of mobile communication devices including portable devices, reducing the size of components mounted thereon has become a hot topic in the industry, and high integration technology is being combined to show improved functions with miniaturization of mounting components.

In particular, camera modules, which are mostly used in current mobile communication devices, are small and are applied to various IT devices such as camera phones, PDAs, and smart phones, and portable mobile communication devices. The introduction of multifunctional composite devices equipped with a camera module is increasing.

The camera module used in the portable mobile communication includes a housing, an image sensor, and a printed circuit board, and includes a lens barrel that forms an image of a subject in front of the housing so that an image formed by the image sensor is focused on the image sensor. It is produced by combining.

A brief description of the assembly method of such a camera module is as follows. First, the image sensor is attached to one surface of the printed circuit board, and when the adhesion of the image sensor is completed, the pad formed on the printed circuit board and the image sensor is connected using a wire bonding process.

When the printed circuit board and the image sensor are energized by a wire, an epoxy is applied to the outer edge portion of the printed circuit board. Then, the housing is bonded to the upper surface of the epoxy-coated printed circuit board and the epoxy is cured at a predetermined temperature to fix the housing.

As such, when the printed circuit board and the housing are fixed, the lens barrel is inserted into the housing to final assembly of the module assembly.

In addition, the module assembly is a printed circuit board is closely coupled to the upper surface of the flexible board to enable electrical connection with an external device through a printed circuit board attached to the bottom of the housing, the flexible corresponding to the bottom surface of the printed circuit board After the solder is applied to the pad of the substrate, the two contact surfaces are closely bonded by a hot-bar (HOT-BAR) process using heat and pressure.

That is, by applying a hot bar under the flexible substrate, the solder applied to the bonding interface between the flexible substrate and the printed circuit board is soldered over time, and the two contact surfaces are coupled to each other. However, at this time, the lens barrel provided in the upper portion of the module assembly is cracked when heat above a predetermined temperature is applied. Therefore, the hot-bar can not apply more heat, there is a problem that often the solder applied to the bonding interface between the flexible substrate and the printed circuit board is cold solder.

This causes a decrease in the overall yield of the camera module.

Accordingly, the present invention is to solve all the disadvantages and problems raised on the camera module bonding jig, by providing a circulation unit for supplying air having a different temperature and discharge to the inside of the main body to which the camera module is mounted, It is an object of the present invention to provide a camera module bonding jig that prevents a failure of a camera module due to cracking of a lens barrel during a HOT-BAR process.

The present invention for achieving the above object is provided with a seating unit is mounted to the camera module therein; And a circulation unit provided at both upper and lower ends of the main body, the circulation unit including a first circulation unit and a second circulation unit for supplying air having different temperatures to the inside of the main body and discharging them to the outside. The purpose is to provide.

In addition, the first circulation portion and the second circulation portion is provided with a supply portion and the discharge portion, the supply portion and the discharge portion is in communication with the air circulation passage.

In this case, the first circulation part includes a first supply part for supplying cool air to the inside of the main body and a first discharge part for discharging the cold air, and the first supply part is provided at a position higher than the first discharge part. Can be.

In this case, the circulation part provided at the lower end of the main body includes a second supply part for supplying hot air to the inside of the main body and a second discharge part for discharging the hot air, and the second discharge part is lower than the second supply part. It may be provided in.

The camera module may include a flexible substrate; And a module assembly comprising a printed circuit board, a housing, and a lens barrel, which are adhesively fixed on the flexible substrate and mounted on an underside of the image sensor, wherein the module assembly is formed by the hot-bar process. It can be adhesively fixed on the substrate.

In addition, the first circulation portion may be formed at a position corresponding to the lens barrel of the camera module.

The second circulation part may be formed at a position corresponding to the flexible board and the printed circuit board of the camera module.

In addition, a partition wall may be provided between the first circulation portion and the second circulation portion.

In addition, at least one seating portion may be provided.

As described above, the camera module bonding jig according to the present invention is provided with a first supply portion and a first discharge portion for supplying cool air therein and discharging to the outside on both upper ends of the main body on which the camera module is mounted, thereby providing a hot-bar. In the (HOT-BAR) process, the camera module is prevented from being defective due to the crack of the lens barrel, thereby improving the yield of the camera module.

In addition, the present invention is provided with a second supply portion and a second discharge portion for supplying the hot air therein and discharge to the outside at the bottom of both sides of the main body, the adhesive applied to the pad of the flexible substrate during the hot-bar (HOT-BAR) process By promoting the deterioration of the cold lead to prevent the generation of the camera module has the effect of improving the reliability and marketability.

In addition, the present invention can easily increase the temperature during the hot-bar (HOT-BAR) process, thereby reducing the soldering time of the solder has the effect of improving the productivity of the camera module.

Details regarding the operational effects including the technical configuration of the camera module bonding jig according to the present invention will be clearly understood by the following detailed description with reference to the drawings in which preferred embodiments of the present invention are shown.

1 and 2 will be described in detail with respect to the camera module bonding jig according to an embodiment of the present invention.

1 is a perspective view of a camera module bonding jig according to an embodiment of the present invention, Figure 2 is a cross-sectional view of the camera module bonding jig according to the embodiment of the present invention.

1 and 2, the camera module bonding jig 100 according to the exemplary embodiment of the present invention supplies air to the main body 140 in which the camera module 110 is mounted and the main body 140. It comprises a circulation portion 150 for discharging.

Here, the camera module bonding jig 100 is a device used when adhesively fixing the module assembly 130 and the flexible substrate 120 in a hot-bar process.

The module assembly 130 is integrally coupled to the printed circuit board 132 on which the image sensor 131 is mounted by wire bonding, the housing 133, and the lens barrel 134 in which a plurality of lenses are stacked. It is configured. In this case, the printed circuit board 132 of the module assembly 130 is seated on the pad 120a of the flexible board 120 so that the image sensor 131 and the flexible board 120 provided on the upper surface of the module assembly 130 are energized. do.

At this time. Looking at the manufacturing process of the module assembly 130 briefly as follows. First, the image sensor 131 is bonded onto the printed circuit board 132. When the image sensor 131 is fixed to the printed circuit board 132, the image sensor 131 and the printed circuit board 132 are connected by using a wire made of a conductive material.

The printed circuit board 132 manufactured as described above is adhesively fixed to the bottom surface of the housing 133. In addition, a through hole is provided at an upper end of the housing 133, and the lens barrel 134 is coupled through the through hole.

Meanwhile, the flexible substrate 120 attached to the bottom surface of the module assembly 130 may include a flexible portion 121 having a predetermined length and a substrate portion to which the module assembly 130 is adhered to one side of the flexible portion 121. And a connector 123 on which the connector for connecting to an external device is mounted on the other side of the flexible part 121 and the flexible part 121. In this case, a plurality of pads 120a are provided at an upper edge of the substrate part 122 for electrical connection with the printed circuit board 132 attached to the bottom surface of the module assembly 130.

The flexible substrate 120 may be manufactured separately from the module assembly 130 and may be bonded to each other by the hot assembly (HOT-BAR) process.

In more detail, first, the pad 120a provided on the substrate 122 of the flexible substrate 120 may be easily bonded to the printed circuit board 132 attached to the bottom surface of the module assembly 130. After the solder is applied, the module assembly 130 is positioned.

Then, the flexible substrate 120 and the module assembly 130 are inserted into the main body 140 of the camera module bonding jig 100 and then a hot bar (BAR) provided under the main body 140, that is, hot The solder applied to the pad 120a of the flexible substrate 120 is soldered using a bar (HOT-BAR). As such, the solder is soldered to bond the flexible substrate 120 and the module assembly 130 to each other, thereby completing the assembly of the camera module 110.

That is, the hot-bar process is a thermal bonding method for bonding the flexible substrate 120 and the module assembly 130 using a hot bar (BAR).

The main body 140 may be manufactured in a rectangular parallelepiped shape, but is not limited thereto. Inside the main body 140 may be provided with a seating portion 141 on which the camera module 110 is mounted. At least one seating part 141 may be provided, and the seating part 141 may have a shape corresponding to that of the camera module 110 assembled as described above, and may be easily mounted and detached.

In this case, the material of the main body 140 may be made of a metal having high thermal conductivity so as to easily absorb heat generated from the hot bar provided at the bottom during the hot bar process. Metals having high thermal conductivity may include aluminum, copper, silver, gold, and the like.

The circulation part 150 may be provided at both upper and lower ends of the main body 140 to include a first circulation part and a second circulation part for supplying air having different temperatures into the main body and discharging them to the outside. have.

The circulation part 150 may include supply parts 152 and 156 for supplying air into the main body 140 and discharge parts 153 and 157 for discharging the air to the outside.

In this case, the air circulation passages 154 and 158 communicated between the supply parts 152 and 156 and the discharge parts 153 and 157. The air circulation passages 154 and 158 are paths through which the air supplied into the main body 140 moves, one end of which passes through the inside of the main body 140 through the supplying parts 152 and 156, and the other end of the exhausting parts 153 and 157. Through) and through the outside of the main body 140. That is, the cross sections of the air circulation passages 154 and 158 may have a 'c' shape.

The first circulation part 151 provided at the upper end of the main body 140 circulates cool air inside the main body 140, and the second circulation part 155 provided at the lower end of the main body 140 is the main body ( Circulate hot air inside the 140).

In this case, a partition wall 142 is provided between the first circulation part 151 and the second circulation part 155 to fundamentally block the inflow of air circulated. Therefore, the temperature of the air circulated in each of the circulation parts 151 and 155 can be kept constant.

The first circulation part 151 is formed at a position corresponding to the lens barrel 134 of the module assembly 130 to supply cool air to the inside of the main body 140, that is, the lens barrel 140. It may include a first supply unit 152 and a first discharge unit 153 for discharging the cold air to the outside.

At this time, since the cool air has a high density, the cool air descends from the top to the bottom along the air circulation passage 154. Therefore, the first supply part 152 may be provided at a position higher than the first discharge part 153.

In this way, the first supply unit 152 and the first discharge unit 153 for supplying and discharging cool air at a position corresponding to the lens barrel 140 are provided to the lens barrel 134 during the hot-bar process. By circulating cold air, the temperature may be lowered to prevent cracking of the lens barrel 134 generated due to high heat.

The second circulation part 155 is formed at a position corresponding to the printed circuit board 132 and the flexible substrate 120 of the module assembly 130, that is, the inside of the main body 140, that is, the printed circuit board. 132 and a second supply unit 156 for supplying hot air to the flexible substrate 120 and a second discharge unit 157 for discharging the hot air to the outside.

At this time, since the hot air has a low density, the hot air rises from the bottom up along the air circulation passage 158. Therefore, the second supply part 156 may be provided at a lower position than the second discharge part 157.

As such, by providing the second supply unit 156 and the second discharge unit 157 for supplying and discharging hot air to a position corresponding to the printed circuit board 132 and the flexible substrate 120, during the hot-bar process Hot air is circulated through the printed circuit board 132 and the flexible board 120 to increase the temperature to promote deterioration of solder applied to the pad 120a of the flexible board 120, thereby preventing cold solder generation. In addition, it is possible to easily control the temperature during the hot-bar process, thereby controlling the soldering time of the solder.

Although the preferred embodiments of the present invention described above have been described in detail, those skilled in the art will understand that various modifications and equivalent other embodiments are possible therefrom.

Accordingly, the scope of the present invention should not be limited to the disclosed embodiments but should be regarded as belonging to various modifications and improvements of those skilled in the art using the basic concept of the present invention as defined in the following claims, or the scope of the present invention. .

1 is a perspective view of a camera module bonding jig according to an embodiment of the present invention.

2 is a cross-sectional view of a camera module bonding jig according to an embodiment of the present invention.

<Explanation of Signs of Major Parts of Drawings>

100: camera module bonding jig 110: camera module

120: module assembly 130: flexible substrate

140: main body 150: circulation

Claims (11)

A main body provided with a seating portion in which a camera module is mounted; And A circulation part provided at both upper and lower ends of the main body, the first circulation part and a second circulation part configured to supply air having different temperatures to the inside of the main body and to discharge the outside; Camera module bonding jig comprising a. The method of claim 1, The first circulation part and the second circulation part is provided with a supply part and a discharge part, the supply part and the discharge part is a camera module bonding jig communicating with the air circulation passage. The method of claim 1, And the first circulation part comprises a first supply part supplying cool air to the inside of the main body and a first discharge part discharging the cool air. The method of claim 3, wherein The camera module bonding jig of the first supply is provided at a position higher than the first discharge. The method of claim 1, And a circulation part provided at the lower end of the main body, the second supply part supplying hot air to the inside of the main body and a second discharge part discharging the hot air. The method of claim 5, And the second discharge part is disposed at a lower position than the second supply part. The method of claim 1, The camera module Flexible substrates; And And a module assembly composed of a printed circuit board, a housing, and a lens barrel, which are adhesively fixed on the flexible substrate and mounted on an underside of the image sensor. And the module assembly is adhesively fixed on the flexible substrate by a hot-bar process. The method of claim 7, wherein And the first circulation part is formed at a position corresponding to the lens barrel of the camera module. The method of claim 7, wherein And the second circulation part is formed at a position corresponding to the flexible substrate and the printed circuit board of the camera module. The method of claim 1, Camera module bonding jig is provided with a partition between the first circulation portion and the second circulation portion. The method of claim 1, Camera mounting jig is provided with at least one seating portion.

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