JPS62134581A - Printed circuit board - Google Patents

Abstract

PURPOSE:To prevent a latch-up or back-drive phenomenon by performing a test in such a state that parts are mounted to a parts substrate when said test is performed by an in-circuit tester, by combining the parts substrate to which the parts of an integrated circuit are mounted with a wiring board having through-holes connected to each other by wiring. CONSTITUTION:Parts 15 are mounted to the parts mount hole 12 of a parts substrate 11 and a terminal 16 is further mounted to a terminal hole 13. The terminal 16 is inserted in the corresponding through-hole 22 of a wiring board 21 to fix the parts substrate 11 and the wiring substrates 21 in a combined state. The terminal 16 pierces through the parts substrate 11 and the wiring substrate 21 and is set to a length so as to slightly protrude from respective wiring surfaces. The terminal 16 is connected to the through-hole 22 by various method such as soldering, solvent coating, the formation of the wiring board from conductive rubber or the like and, at the same time, each of these method is the one for fixing the parts substrate and the wiring board 21.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a printed circuit board on which components such as integrated circuits are mounted.

[Conventional technology]

Conventionally, this type of printed circuit board has been created by simultaneously printing wiring for interconnecting these components on a printed circuit board on which components such as integrated circuits are mounted.

[Problem that the invention seeks to solve]

With the conventional printed circuit board mentioned above, when testing components such as integrated circuits mounted on the printed circuit board with an in-circuit tester, each integrated circuit is interconnected by the wiring on the printed circuit board. and test certain integrated circuits.

When a negative signal is applied to a specific integrated circuit, the electrical signal travels through the wiring on the printed circuit board and flows to other integrated circuits, causing phenomena such as latch-up and backdrive. This had the disadvantage that the test was impossible.

[Means for solving problems]

The printed circuit board of the present invention has component mounting holes for mounting components such as integrated circuits, and terminal holes for mounting terminals, which are provided in close proximity to each of the component mounting holes in one-to-one correspondence, and terminal holes for mounting terminals and one-to-one correspondence to each of the component mounting holes. A component board having a fi1 connecting the component mounting hole and the terminal hole corresponding to each other, and the terminal hole provided on the component board, respectively, in a one-to-one manner.
The terminal includes a through hole for inserting and connecting a terminal mounted in the terminal hole at a position corresponding to the terminal hole, and a wiring board having wiring for connecting the through holes to each other.

〔Example〕

Next, embodiments of the present invention will be described with reference to the drawings.

FIG. 1 is a sectional view showing one embodiment of the present invention.

In FIG. 1, one embodiment of the present invention is comprised of a component board 11 and a wiring board 21. As shown in FIG. The component board 11 includes component mounting holes 12 for mounting components such as integrated circuits, terminal holes 13 for mounting terminals, and wiring 14 for connecting these two. Terminal hole 13 is component mounting hole 1
A wiring line 14 is provided in close proximity to the component mounting holes 12 and terminal holes 13 in one-to-one correspondence with each other, and interconnects the component mounting holes 12 and terminal holes 13 in one-to-one correspondence with each other. The wiring board 21 is composed of through holes 22 provided at positions corresponding to the terminal holes 13 of the component board 11 in a one-to-one IK correspondence, and wiring 23 interconnecting the through holes.

FIGS. 2 and 3 are cross-sectional views showing one embodiment of the present invention in use. As shown in FIG. 2, a component 15 is mounted in a component mounting hole 12 on a component board 11.

Furthermore, the terminal 16 is mounted in the terminal hole 13. As shown in FIG. 3, the terminal 16f is inserted into the corresponding through hole 22 of the wiring board 21, and the component board 11 and the wiring board 21 are combined and fixed. let

As shown in FIG. 3, the terminal 16 has such a length that it passes through the component board 11, the wiring board 21, etc., and slightly protrudes from the respective wiring surfaces. There are many methods for connecting the terminal 16 and the through hole 22, such as soldering, applying a solvent, and making the wiring board conductive rubber. be.

According to this embodiment, if the in-circuit test is performed on the component board 11 in FIG. 2, the components are not connected to each other, so there is no mutual interference, which was a problem with conventional printed circuit boards. Latch-up, backdrive, etc. do not occur, and in-circuit testing can be performed without any problems.

〔Effect of the invention〕

As explained above, when testing with an in-circuit tester the present invention is a printed circuit board that combines a component board on which components such as integrated circuits are mounted and a wiring board having through holes interconnected by wiring. By performing the test with the components mounted on the component board, phenomena such as latch-up and backdrive that occur with conventional printed circuit boards can be prevented, and in-circuit testing can be performed without any hindrance. can get.

[Brief explanation of drawings]

FIG. 1 is a cross-sectional view showing an embodiment of the present invention, and FIGS. 2 and 3 are cross-sectional views showing how the embodiment of the present invention is used. 11... Component board, 12... Component mounting hole, 13
...terminal hole, 14...wiring, 15...parts,
16...Terminal, 21...Wiring board, 22...Through hole, 23...Wiring. ,＋−＋ Agent Patent Attorney Susumu Uchihara −−・

Claims (1)

[Claims] Component mounting holes for mounting components such as integrated circuits, terminal holes for mounting terminals, and component mounting holes provided in close proximity to each of the component mounting holes in one-to-one correspondence; terminal holes for mounting terminals; A component board having wiring that connects the holes and the terminal holes, and terminals to be mounted in the terminal holes are inserted and connected to positions corresponding one-to-one to the terminal holes provided on the component board. A printed circuit board comprising through holes and a wiring board having wiring connecting between the through holes, wherein a component such as an integrated circuit is mounted in the component mounting hole of the component board, and a terminal is mounted in the terminal hole. , by inserting and connecting the terminals to the corresponding through holes of the wiring board and fixing the component board and the wiring board in combination, mounting of components such as integrated circuits and wiring between the components are realized. A printed circuit board that is characterized by being made of aluminum.