KR101735439B1 - Manufacturing method for radiant heat circuit board - Google Patents
Manufacturing method for radiant heat circuit board Download PDFInfo
- Publication number
- KR101735439B1 KR101735439B1 KR1020150128152A KR20150128152A KR101735439B1 KR 101735439 B1 KR101735439 B1 KR 101735439B1 KR 1020150128152 A KR1020150128152 A KR 1020150128152A KR 20150128152 A KR20150128152 A KR 20150128152A KR 101735439 B1 KR101735439 B1 KR 101735439B1
- Authority
- KR
- South Korea
- Prior art keywords
- heat
- circuit board
- printed circuit
- heat sink
- sink pad
- Prior art date
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Classifications
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K3/00—Apparatus or processes for manufacturing printed circuits
- H05K3/46—Manufacturing multilayer circuits
- H05K3/4697—Manufacturing multilayer circuits having cavities, e.g. for mounting components
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K1/00—Printed circuits
- H05K1/02—Details
- H05K1/0201—Thermal arrangements, e.g. for cooling, heating or preventing overheating
- H05K1/0203—Cooling of mounted components
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K3/00—Apparatus or processes for manufacturing printed circuits
- H05K3/30—Assembling printed circuits with electric components, e.g. with resistor
- H05K3/32—Assembling printed circuits with electric components, e.g. with resistor electrically connecting electric components or wires to printed circuits
- H05K3/34—Assembling printed circuits with electric components, e.g. with resistor electrically connecting electric components or wires to printed circuits by soldering
Landscapes
- Engineering & Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Manufacturing & Machinery (AREA)
- Structure Of Printed Boards (AREA)
- Cooling Or The Like Of Semiconductors Or Solid State Devices (AREA)
Abstract
The present invention relates to a method of manufacturing a heat-dissipating printed circuit board in which a heat sink pad for inserting a heat sink pad which is economical and mass-producible while being capable of effectively dissipating heat from a printed circuit board is formed. Forming a primary plating layer of copper on the front and back surfaces of the printed circuit board and inside the heat dissipation holes; Inserting a built-in heat sink pad into the heat dissipating hole; (S4) forming a secondary plating layer made of copper on the front and back surfaces of the printed circuit board, inside the heat dissipation hole in which the internal heat sink pad is inserted, and on the internal heat sink pad; (S5) forming a PSR ink layer on the front and rear surfaces of the printed circuit board; Filling the solder into the PSR ink layer in the heat dissipating hole and curing (S6); And a step (S7) of attaching an external heat sink pad to the front surface or back surface of the cured solder and mounting the electronic component at the same time, wherein the internal heat sink pad in step S3 includes a body having a disc shape And protrusions formed integrally on the outer circumferential surface of the body, wherein the protrusions are formed to be equally spaced on the outer circumferential surface of the body, and the protrusions can be brought into close contact with the heat dissipating holes while causing plastic deformation when the protrusions are inserted into the heat dissipating holes.
Description
The present invention relates to a method of manufacturing a heat-dissipating printed circuit board in which a heating sink pad is inserted.
2. Description of the Related Art In general, a printed circuit board (PCB) is formed with a circuit pattern through which electric current flows, and at the same time, a large number of electronic components are mounted. Therefore, Such high temperature heat causes the temperature of the printed circuit board to rise, thereby causing malfunction of the electronic component and causing the reliability of the printed circuit board to deteriorate.
As shown in FIG. 1, in order to maximize the area of contact between the printed circuit board P and outside air, a conventional method for heat dissipation of a printed circuit board The heat dissipating method using only the heat dissipating hole H has a limited effect on the amount of heat dissipated by the heat dissipating hole H and the effect is insufficient.
Various studies have been conducted in order to solve such problems, and representative examples thereof include Korean Patent Publication No. 10-2012-0072689 and Korean Patent Publication No. 10-2010-0109332.
Korean Patent Laid-Open Publication No. 10-2012-0072689 discloses a heat dissipation circuit board in which a heat dissipation fin is inserted into a heat dissipation hole and then a heat dissipation fin is embedded in a heat dissipation hole, and a manufacturing method thereof.
Also, Korean Patent Laid-Open No. 10-2010-0109332 discloses a chip-type heat sink which is soldered to a conductive pattern of a printed circuit board by reflow soldering adjacent to a lead frame of a heat generating element to emit heat of the heat generating element. .
However, since the heat dissipation circuit board disclosed in Korean Patent Laid-Open Publication No. 10-2012-0072689 does not have a fixing means in the heat dissipation fin or the heat dissipation hole, when the heat dissipation fin is embedded in the heat dissipation hole, , So that the process of embedding the heat sink pin can not be performed smoothly, and the productivity can not be improved.
In addition, since the chip type heat sink disclosed in the aforementioned Korean Patent Laid-Open No. 10-2010-0109332 is soldered on a printed circuit board, it is not easy to apply to a recent printed circuit board which is integrated and miniaturized, There is a problem that productivity is lowered due to soldering work.
In addition, the chip-type heat sink disclosed in the aforementioned Korean Patent Laid-Open No. 10-2010-0109332 has another problem in that it is not easy to manufacture since the grooves are formed on the outer circumferential surface in order to increase the heat radiation effect by enlarging the surface area.
The present invention provides a method of manufacturing a heat-dissipating printed circuit board in which a heat sink pad is inserted, which is economical and mass-producible, while effectively dissipating heat from a printed circuit board.
The technical objects to be achieved by the present invention are not limited to the above-mentioned technical problems.
According to an aspect of the present invention, there is provided a method of manufacturing a heat dissipation printed circuit board, comprising: forming a heat dissipation hole in a printed circuit board; Forming a primary plating layer of copper on the front and back surfaces of the printed circuit board and inside the heat dissipation holes; Inserting a built-in heat sink pad into the heat dissipating hole; (S4) forming a secondary plating layer made of copper on the front and back surfaces of the printed circuit board, inside the heat dissipation hole in which the internal heat sink pad is inserted, and on the internal heat sink pad; (S5) forming a PSR ink layer on the front and rear surfaces of the printed circuit board; Filling the solder into the PSR ink layer in the heat dissipating hole and curing (S6); And a step (S7) of attaching an external heat sink pad to the front surface or back surface of the cured solder and mounting the electronic component at the same time, wherein the internal heat sink pad in step S3 includes a body having a disc shape And protrusions formed integrally on the outer circumferential surface of the body, wherein the protrusions are formed to be equally spaced on the outer circumferential surface of the body, and the protrusions can be brought into close contact with the heat dissipating holes while causing plastic deformation when the protrusions are inserted into the heat dissipating holes.
As described above, the present invention has an advantage that the heat of the printed circuit board can be efficiently dissipated through the heat sink.
In addition, since the heat sink pad is fixed while causing plastic deformation in the heat dissipating hole, it is possible to prevent the heat sink pad from being separated from the heat dissipating hole in a process to be described later, Can be greatly reduced and mass production can be performed.
1 is a schematic view of a conventional printed circuit board,
2 is a diagram illustrating various embodiments of heat sink pads according to the present invention,
3 to 9 are views showing a process of manufacturing a heat-dissipating printed circuit board according to the present invention,
10 is a flowchart illustrating a process of manufacturing a heat-dissipating printed circuit board according to the present invention, and
FIG. 11 is a photograph of a heat-dissipating printed circuit board according to the present invention in which the heat sink pad shown in FIG. 2 is mounted.
Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. In the drawings, the same components are denoted by the same reference symbols whenever possible. In the following description, well-known functions or constructions are not described in detail since they would obscure the invention in unnecessary detail.
FIG. 2 shows various embodiments of the
The built-in
The
The reason why the
On the other hand, when the built-in
In order to prevent the
In addition, the built-in
A method of manufacturing a heat-dissipating printed circuit board (PCB) into which the
In order to manufacture a heat-radiating printed circuit board (PCB-R) according to the present invention, first, a
In step S1, the printed circuit board (PCB) is mounted on the printed circuit board (PCB) in such a manner that the
The method of forming the
When the
The
In step S3, the insertion of the internal
6, the surface and back of the printed circuit board (PCB), the inside of the
6A, after the
After the
Here, the material of the
The
9, after the step S6, an external
The mounting state of the built-in
The manufacturing method of the heat-dissipating printed circuit board having the heat sink pad inserted therein is not limited to the configuration and the operation method of the embodiments described above. The embodiments may be configured so that all or some of the embodiments may be selectively combined so that various modifications may be made.
100: Built-in heat sink pad 210: Heat dissipation hole
220: primary plating layer 230: secondary plating layer
240: PSR ink layer 250: solder
260: External heat sink pad
Claims (1)
Forming a heat dissipating hole in the printed circuit board (S1);
(S2) forming a primary plating layer of copper on the front and back surfaces of the printed circuit board and inside the heat dissipation holes;
(S3) of inserting a built-in heat sink pad into the heat dissipating hole and fixing the built-in heat sink pad to the heat dissipating hole;
A second plating layer made of a copper material is formed on the front and back surfaces of the printed circuit board, inside the heat dissipation hole in which the internal heat sink pad is inserted, and on the internal heat sink pad, (S4) securing the sink pad to the heat dissipating hole;
(S5) forming a PSR ink layer on the front and rear surfaces of the printed circuit board;
(S6) of filling the solder in the heat dissipating hole up to the PSR ink layer and curing the solder, and fixing the internal heat sink pad to the heat dissipating hole by the solder in a third order (S6); And
(S7) attaching an external heat sink pad to the surface or back surface of the cured solder and mounting the electronic component,
The built-in heat sink pad in the step (S3)
A body having a disk shape and protrusions integrally formed on an outer circumferential surface of the body,
The protrusions are formed on the outer circumferential surface of the body at equal intervals,
Wherein the heat dissipation holes are spaced apart from each other by an interval of not less than 200 占 퐉 and not more than 800 占 퐉, wherein the heat dissipation printed circuit board Gt;
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1020150128152A KR101735439B1 (en) | 2015-09-10 | 2015-09-10 | Manufacturing method for radiant heat circuit board |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1020150128152A KR101735439B1 (en) | 2015-09-10 | 2015-09-10 | Manufacturing method for radiant heat circuit board |
Publications (2)
Publication Number | Publication Date |
---|---|
KR20170030797A KR20170030797A (en) | 2017-03-20 |
KR101735439B1 true KR101735439B1 (en) | 2017-05-15 |
Family
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Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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KR1020150128152A KR101735439B1 (en) | 2015-09-10 | 2015-09-10 | Manufacturing method for radiant heat circuit board |
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Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN111654979A (en) * | 2020-06-30 | 2020-09-11 | 博敏电子股份有限公司 | Method for embedding copper pillar in seamless connection mode in through hole |
CN113966067A (en) * | 2020-07-20 | 2022-01-21 | 宏恒胜电子科技(淮安)有限公司 | Circuit board and manufacturing method thereof |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2004179309A (en) * | 2002-11-26 | 2004-06-24 | New Japan Radio Co Ltd | Heat dissipating structure for printed circuit board and method for manufacturing the same |
JP2010258260A (en) * | 2009-04-27 | 2010-11-11 | Nec Corp | Heat radiation printed board |
-
2015
- 2015-09-10 KR KR1020150128152A patent/KR101735439B1/en active IP Right Grant
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2004179309A (en) * | 2002-11-26 | 2004-06-24 | New Japan Radio Co Ltd | Heat dissipating structure for printed circuit board and method for manufacturing the same |
JP2010258260A (en) * | 2009-04-27 | 2010-11-11 | Nec Corp | Heat radiation printed board |
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KR20170030797A (en) | 2017-03-20 |
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