KR200457775Y1 - a module package for receiving light signal - Google Patents

Abstract

The present invention relates to the fastening of the remote control signal receiving COB module and the electromagnetic shielding shield case, and more particularly, to a remote control receiving COB module having a shield case that can be mounted and grounded at the same time without the fastening stress. To provide.

The COB module for receiving a remote controller according to the present invention is formed by combining a COB module having a rectangular parallelepiped molding part on a printed circuit board and a shield case covering the top and side surfaces of the COB module, wherein the side of the printed circuit board is provided. A fixing side groove is formed in the corner, and a ground corner groove is formed in the corner, and a fixing protrusion for fixing the shield case is formed at the side of the shield case to be bent inward and the ground protrusion is grounded in the solder liquid. Characterized in that formed.

The remote control receiving module according to the present invention is soldered to the printed circuit board and grounded at the same time, there is no bending stress, it is possible to solve the problem that the shield case is separated from the COB after fastening.

Ground, COB

Description

CIO type receiving module package {a module package for receiving light signal}

The present invention relates to the fastening of the remote control signal receiving COB module and the electromagnetic shielding shield case, and more particularly, to a remote control receiving COB module having a shield case that can be mounted and grounded at the same time without the fastening stress. To provide.

As electronic products become smaller, many core components follow the COB (Chip on Board) method, which is mounted directly on the PCB. One such COB type component is a receiving module package that receives an optical signal generated from a remote controller. The COB type receiving module package includes a receiving module in which a light receiving element and a driving chip for driving the same are mounted on a surface of a printed circuit board, and a mold is formed to protect the light receiving element, and a lens configured to receive light on an upper surface thereof; It consists of a shield case surrounding the outside of the receiving module except the lens and the bottom.

In the COB type remote control receiving module, various methods of fastening the shield case to the receiving module have been developed. It is mainly used for adhesives, stoppers, and soldering methods.

Soldering is a method of soldering the shield case to the printed circuit board of the receiving module and grounding. Since the receiving module package is much smaller than the fingernail, the process of assembling the shield case to the receiving module is very difficult.

Korean Patent Patent No. 756233 is proposed as the method of FIG. 6 by the applicant for solving the problem. According to this, a plurality of side grooves 11a are formed at the lower ends of both sides of the PCB 11 of the receiving module, and the side protrusions 20a are inserted into the side grooves 11a at both lower ends of the shield case 20. After forming the, the shield 20 is inserted into the upper portion of the receiving module 10 in one operation, the side projection (20a) is sandwiched in the side groove (22a), so that the shield 20 A method of assembling the receiving module 10 is proposed. This way In the process of inserting the side protrusion, stress is applied to the receiving module, and there is a problem in that the case is detached during the manufacturing process because the increased shield case is not contracted and becomes much larger.

Meanwhile, in Japan, a method of forming a protruding portion extending from a side portion of the shield case and bending and fastening the shield case with the shield case inserted therein is disclosed. This method can solve the problem that the shield case is much larger, but there is a problem that stress can be formed in the shield case during the bending process, and also a separate soldering work for grounding.

Accordingly, there is a continuing demand for a new method in the market to prevent the separation problem after tightening the shield case and to increase the convenience of grounding the shield case.

An object of the present invention is to solve the problem that the shield case is separated after the fastening or stress when fastening, and to provide a new COB type remote control receiving module to improve the grounding convenience of the shield case.

Another object of the present invention is to solve the problem that the shield case is separated after fastening or the stress caused by bending when fastening, and to provide a structure for mounting a new COB type remote control receiving module to improve the grounding convenience of the shield case.

Yet another object of the present invention is to provide a new shield case that minimizes stress during fastening and allows grounding at the same time as mounting the COB module.

In order to solve the above problems, the remote control receiving COB module according to the present invention is formed by combining a shield case for covering the top and side surfaces of the COB module and the COB module formed with a rectangular parallelepiped on the printed circuit board Here, the side of the printed circuit board is formed with a fixing side groove, a corner is formed with a corner edge for grounding, the side of the shield case is bent inward to form a fixing projection for fixing the shield case, The corner of the shield case is characterized in that the grounding projection is grounded to the solder liquid.

In the present invention, the fixing protrusion is characterized in that the bending mark is formed to prevent the bending stress is applied to the shield case during bending. The bending mark may be a straight groove formed on the inner surface of the fixing protrusion.

In the present invention, it is preferable that the ground protrusion extends longer than the edge groove for grounding and grounded to a solder liquid for soldering a COB module to another substrate.

In the practice of the present invention, it is preferable to use solder cream as the solder liquid.

In accordance with an aspect of the present invention, a mounting structure of a remote control receiving COB module according to the present invention is mounted on a printed circuit board by soldering a COB module coupled to a shield case, wherein the COB module is formed in a rectangular parallelepiped form on a PCB. Is a COB module formed with a molded part, protected by a shield case covering the upper and side surfaces of the COB module, wherein the shield case is bent in the fixing groove of the printed circuit board on the side of the shield case is bent to the shield case It is fixed at the corners, characterized in that the grounding protrusion extending from the shield case is grounded to the solder liquid.

In the present invention, the ground protrusion is preferably stepped from the corner so that the edge height of the shield case is higher than the edge height of the COB module.

In accordance with an aspect of the present invention, a shield case for shielding electromagnetic waves according to the present invention has a light receiving window fitted with a light receiving lens on an upper surface thereof, and a lower surface of the shield case having a rectangular parallelepiped shape to be fitted with a COB module. Fixing protrusions extending from the shield case are formed at left and right sides of the case, and corners are formed to be stepped higher than edges of the COB, and the fixing protrusions are formed with bending marks.

The fixing protrusion is bent into a bending machine in the state in which the shielding case of the COB is fitted is fitted into the fixing groove of the COB module.

In accordance with an aspect of the present invention, a remote control receiving module having a shield case coupled to an outer surface of a COB module is mounted on a printed circuit board with solder cream, and the ground projection formed on the shield case is grounded with a solder cream to disturb external light of the remote control receiving module. It is characterized by shielding.

In accordance with an aspect of the present invention, a remote control receiving module is formed by combining a shield case covering a top surface and side surfaces of a COB module having a rectangular parallelepiped molding part on a printed circuit board on which a remote control light receiving element is mounted. Here, the fixing side grooves are formed on the side of the printed circuit board, the ground corner grooves are formed on the corners, and the fixing protrusions which bend the inner side of the fixing side grooves on the side of the shield case to fix the shield case. Is formed, the corner of the shield case is formed with a grounding projection that is grounded to the solder liquid, the bending mark is formed inside the fixing projection to prevent bending stress is applied to the shield case when bending, the ground The protrusion is characterized in that it extends longer than the ground edge groove.

The present invention relates to a shield case for a remote control receiving module in one aspect, the shield case according to the present invention is formed with a hole in which the hemispherical lens is inserted in the upper surface, forms an open rectangular shape of the lower surface, at least one side The inner side is bent inward, the fixing projection formed with a bending mark is formed on the inner side, the overall surface is a Gaba case, characterized in that at least one corner is characterized in that the grounding projection is grounded to the solder cream.

Since the remote control receiving module according to the present invention is fastened by bending after the shield case is fitted to the receiving module, it is possible to prevent the receiving module or the shield case from being deformed while the shield case is fitted to the receiving module, so that the shield case is extended for a long time. Can be used without peeling. In addition, it is possible to prevent the stress caused by the bending to the shield case in the process of bending the shield case.

In addition, when the remote control receiving module according to the present invention is mounted on a printed circuit board, the protruding protrusions contact the cream for soldering so that a separate soldering process is not required, and thus the soldering process may be omitted.

The present invention combines the shield case by bending, but at the same time high soldering stability, it is possible to solder at the same time when mounting, solving the problem that the bending bonding additional soldering.

Hereinafter, the present invention will be described in detail with reference to Examples.

Figure 1 shows a cross-section of the COB module coupled to the shield case in the present invention. As shown in FIG. 1, the COB module 10 includes a light receiving chip 12 and a driving chip 13 for driving the light receiving chip 12 mounted on a substrate 11. The driving chip 13 is connected by wire bonding. A resin mold 14 is formed on the substrate 11 to protect the light receiving chip 12 and the driving chip 13, and the module lens 15 is integrated with the resin mold 14 on the resin mold 14. It is formed.

Figure 2 shows a perspective view from the bottom of the COB module shown in FIG. As shown in FIG. 2, the substrate 11 of the COB module is a substrate having a rectangular shape as a whole. The bottom of the substrate has four solder corner grooves 16 formed at four corners, and two fastening side holes 17 are formed at the centers of both sides. The corner hole 16 is a 1/8 spherical hole having a quarter of a hemisphere, and the side hole 17 is a half or a half of a hole or hemisphere having a half of a cylindrical half-hole. One type of hole is used. The plating layer 19 is formed on the surface of the corner hole 16, the side hole 17, and the corner groove 16.

Shield case 20 is composed of an upper surface for protecting the upper surface of the rectangular parallelepiped COB module 10 and four side surfaces for protecting the four sides, the bottom surface is open. The light receiving window 21 to which the module lens 15 is fitted is formed on the upper surface of the shield case 20. 3 is a perspective view showing the side of the shield case 20 is inverted and coupled to the COB module 10 in the present invention.

As shown in FIG. 3, a fixing protrusion 27 is formed at a portion corresponding to the side hole 17 of the COB module 10 at the center of the left and right sides of the shield case 20. The fixing protrusion 27 has a bending mark 28 formed therein so that the bending mark 28 is bent at the time of bending, thereby preventing the shield case 20 from bending.

As shown in FIG. 3, the ground protrusions 29 are formed at four corners of the shield case 20. The ground protrusion 29 protrudes higher than the bottom of the COB module 10 to be grounded in contact with a solder layer (not shown) formed at the bottom of the COB module 10.

4 shows a manufacturing process of the remote control receiving module according to the present invention. As shown in Figure 4, after inserting the shield case to the COB module, through the bending of the fixing projections 27 to manufacture a remote control receiving module coupled to the shield case to the COB module.

As shown in Figure 5, the remote control receiving module 30 according to the present invention is mounted on a printed circuit board by the solder (31). In order to mount the remote control receiver module on the printed circuit board, a conductive solder cream is first applied to the place where the remote controller receiver module is mounted. The remote control receiving module is mounted such that the edge of the remote control receiving module 30 is in contact with the solder cream 31 coated on the upper surface of the printed circuit board 100. The coated solder cream electrically solders the remote control receiving module while electrically connecting the circuit of the printed circuit board 100 and the plating layer 19 formed at the edge of the bottom of the COB module.

In the soldering process, the ground protrusion formed at the edge of the shield case of the remote control receiving module is grounded to the solder cream 31 to block electromagnetic waves, and the excess solder cream is filled in the corner groove of the COB module.

1 is a cross-sectional view of a COB module according to an embodiment of the present invention.

2 is a bottom perspective view of a COB module according to an embodiment of the present invention.

3 is a perspective view of the shield case coupled to the COB module in the present invention upside down.

4 shows a manufacturing process of a remote control receiving module according to the present invention.

5 is a process diagram illustrating a process of soldering and mounting a remote control receiving module according to the present invention on a printed circuit board.

6 is an embodiment of a conventional design.

Claims (6)

A COB module having a rectangular parallelepiped molding part formed on a printed circuit board on which a remote control light receiving element is mounted, and a shield case covering upper and side surfaces of the COB module are combined. Here, the side grooves for fixing are formed at the side of the printed circuit board, and the corner grooves for grounding are formed at the corners. The side of the shield case is bent to the inside of the fixing side grooves to form a fixing projection for fixing the shield case, the corner of the shield case is formed with a grounding projection grounded to the solder liquid, A bending mark is formed inside the fixing protrusion to prevent bending stress from being applied to the shield case during bending. And the ground protrusion extends longer than the ground edge groove. The remote control receiving module according to claim 1, wherein the ground protrusion is stepped at an edge such that the edge height of the shield case is higher than the edge height of the COB module. A COB module having a rectangular parallelepiped molding part and a shield case covering the top and side surfaces of the COB module are combined on a printed circuit board on which the remote control light receiving device is mounted, wherein the side groove for fixing is formed on the side of the printed circuit board. Is formed, the corner is formed with a corner edge for grounding, the side of the shield case is bent inward of the fixing side grooves to form a fixing projection for fixing the shield case, the corner of the shield case is formed in the solder liquid A grounding protrusion is grounded, and a bending mark is formed inside the fixing protrusion to prevent bending stress from being applied to the shield case, and the grounding protrusion extends longer than the edge groove for grounding. The module is mounted on the second printed circuit board, And the remote control receiving module is mounted on the surface of the second printed circuit board by solder, and the ground protrusion is connected to the solder and grounded. 4. The remote control receiving module mounting structure of claim 3, wherein the solder is a solder cream. The structure of claim 4, wherein the solder cream is filled in the corner grooves. In the shield case for a remote control receiving module, a hole in which a hemispherical lens is inserted is formed in an upper surface, and a lower surface forms an open rectangular parallelepiped, and at least one side is bent inward and a fixing protrusion is formed in a bending mark inside. The shield case for electromagnetic shielding, characterized in that at least one corner is formed with a grounding projection is grounded to the solder cream.

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