Circuit board module and method of manufacturing the same
There is provided a circuit board module and a method of manufacturing the same. The circuit board module may include: a circuit board; a resistor arranged on the circuit board; pads covering both edges of the resistor; adhesive portions provided at least on the pads and formed of an electrically insulating material; and a heat dissipation member provided on the resistor and bonded to the pads using the adhesive portions. The adhesive portions are selectively formed, thereby preventing short circuits occurring between the resistor mounted onto the circuit board and the heat dissipation member. Accordingly, the reliability of components can be increased. Furthermore, an adhesive material used to connect the board and the heat dissipation member is formed of a thermally conductive material, thereby increasing heat dissipation efficiency.
1. A circuit board module, comprising:
a circuit board;
a resistor arranged on the circuit board;
pads covering two end surfaces of the resistor;
an adhesive portion disposed at least on the pads and formed of an electrically insulating material;
an insulating layer disposed on an entire area of the circuit board except for on the pads covering the two end surfaces of the resistor; and
a heat dissipation member disposed on the resistor and bonded to the pads with the adhesive portion.
2. The circuit board module of claim 1 , wherein the insulating layer is disposed on an upper surface of the resistor.
3. The circuit board module of claim 1 , wherein the insulating layer comprises a resistor exposing portion through which the resistor is exposed.
4. The circuit board module of claim 1 , wherein the adhesive portion is formed of a thermally conductive material.
5. The circuit board module of claim 1 , wherein the circuit board is a low temperature co-fired ceramic (LTCC) board.
6. The circuit board module of claim 1 , wherein the heat dissipation member is formed of aluminum.
7. A method of manufacturing a circuit board module, the method comprising:
arranging a resistor on a circuit board;
forming pads to cover two end surfaces of the resistor;
forming an adhesive portion using an electrically insulating material at least on the pads;
forming an insulating layer on an entire area of the circuit board except for on the pads covering the two end surfaces of the resistor; and
bonding a heat dissipation member to the pads using the adhesive portion.
8. The method of claim 7 , wherein the forming the insulating layer includes:
disposing a first mask having openings therein through which an area of the circuit board is exposed except for on the pads covering the two end surfaces of the resistor; and
forming the insulating layer on the area of the circuit board, exposed through the openings, except for on the pads covering the two end surfaces of the resistor.
9. The method of claim 8 , wherein the first mask is formed of metal.
10. The method of claim 8 , wherein the insulating layer is formed on an upper surface of the resistor.
11. The method of claim 8 , further comprising forming a resistor exposing portion in the insulating layer through which the resistor is exposed.
12. The method of claim 11 , wherein the resistor exposing portion is formed using a laser to obtain a desired resistance.
13. The method of claim 7 , wherein the adhesive portion is formed of a thermally conductive material.
14. The method of claim 7 , wherein the forming of the adhesive portion comprises:
disposing a second mask having particular openings therein through which at least the pads are exposed; and
coating the pads, exposed through the particular openings, with an electrically insulating adhesive paste.
15. The method of claim 11 , wherein the adhesive portion covers at least the resistor exposing portion.
16. The method of claim 14 , wherein the second mask is formed of metal.