JPS63241980A - Circuit wiring board - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed Description of the Invention] [Object of the Invention] (Industrial Application Field) The present invention is applicable to chip components, mini-molded components such as Zener diodes or transistors, and electronic components such as flat package integrated circuits (ICs). The present invention relates to a circuit wiring board used for mounting.

(Prior art) In general, when mounting surface-mounted components such as chip components, mini-mold components, or flat package ■C on a printed circuit board, each component is mounted using a device such as a chip mounter as a mounting machine. Therefore, a reference hole is required.

However, it may not be possible to drill reference holes or the like at arbitrary positions in the actually used portion of such a printed circuit board, and it may not be possible to attach the device to a guide rail or the like due to the above limitations.

Therefore, in conventional printed circuit boards of this type, the seventh
As shown in the figure, for example, width 60-250III11. A board main body 1 with a length of 90 to 330 mm is integrally formed with an actual use board part 2 and a waste board part 3 with a width of 10 m + m used as a processing margin of a mounting machine adjacent to this real use board part 2, and this waste board Reference hole 4 in part 3, mounting hole 5 to the device
And guide hole 6 of cream solder printing machine for reflow soldering
At the same time, as shown by diagonal lines in FIG.
The blank space of (2) is used as a board holding part in the moving direction A during mounting, and each component P is placed on the actual use board part 2 at a distance of 4na+ or more from the actual use board part 2. A separation line part 7 such as a figure 7 cut groove as shown in FIG.
Some devices have a configuration in which the actually used board section 2 and the disposable board section 3 can be separated after component mounting.

(Problems to be Solved by the Invention) However, in the above-mentioned conventional printed circuit board, a separating line portion is cut at the boundary between the actually used board portion 2 and the disposable board portion 3 of the board body 1. Currently, defective products are inspected by the visual inspection of workers to determine whether or not they have been machined in the predetermined position as designed. There were problems in that it was not only expensive but also inferior in reliability.

The present invention has been made under the above-mentioned circumstances, and its purpose is to process the separation line portion cut at the boundary between the actually used substrate portion and the disposable substrate portion of the substrate body. An object of the present invention is to provide a circuit wiring board whose presence or absence can be automatically inspected.

[Configuration of the Invention (Means for Solving the Problems)] In order to solve the above-mentioned problems, the present invention provides an actual use board section on which electronic components are mounted, and a mounting board adjacent to this actual use board section. A printed circuit board having a sacrificial board part used as a machining margin of a machine, and a separation line part cut along a boundary part between the actual use board part and the sacrificial board part, wherein the boundary A conductive check pattern is disposed along the boundary portion and crosses the boundary portion, and each check pattern is provided with check lands that are respectively contacted by tester electrodes of an electrical testing machine with the boundary portion interposed therebetween. The structure is as follows.

(Function) That is, the present invention achieves 1 by having the above configuration.
A conductive check pattern that crosses the boundary is provided along the boundary between the actual use board part and the disposable board part in which the separation line part is cut, and the check pattern is provided with the boundary part. Since a check land is provided between which the tester electrodes of the electrical testing machine come in contact with each other, it is possible to automatically check whether or not there is any processing on the separation line part by electrical inspection. As a result, it is possible to significantly reduce inspection costs, and it is also possible to detect processing defects of the substrate with high accuracy.

(Example) Hereinafter, the present invention will be described in detail with reference to an example shown in FIGS. 1 to 3. In the illustrated embodiment of the present invention, parts having the same structure as those of the conventional structure shown in FIGS. 8 and 9 will be described using the same reference numerals.

1 and 2 show a first diagram of a circuit wiring board according to the present invention.
This shows an example, in which a conductive check mark is placed on the separating line part 7 consisting of a figure 7 cut groove cut along the boundary between the actually used board part 2 and the disposable board part 3 of the board main body 1. This check pattern 10 has a structure in which a pattern 10 is arranged, and this check pattern 10 has a thin conductor pattern (0, 0, (approximately 25 mm) 11 are arranged at regular intervals, and check lands 12 and 13 are connected to the electrodes of a tester of an electrical testing machine (not shown) through the boundaries.

In other words, the check pattern 10 indicates that when the separation line part 7 consisting of the figure 7 cut groove is properly cut along the boundary between the actually used board part 2 and the disposable board part 3 of the board main body 1, the conductor Cut the pattern 11 and check the check land 1.
2.13, thereby interrupting the electrical continuity between the check lands 12.
By inspecting the state of electrical continuity between the stripes 13 with a tester, it is possible to automatically inspect whether or not the separation line portion 7 has been processed.

Further, FIGS. 3 and 4 show a second embodiment of the present invention, in which a through hole 21. is used as a check land.
22, thereby making it possible to simultaneously inspect the separation line portions 7.7 consisting of the figure 7 cut grooves on both the front and back surfaces of the printed circuit board.

For convenience of the tester, the distance between the centers of the through holes 21 and 22 may be an integral multiple of 1/10 inch (2.54 mm).

Furthermore, FIGS. 5 and 6 show a third embodiment of the present invention, which has a configuration in which a check pattern 10 is arranged on a multilayer printed circuit board, as shown by the dotted line in FIG. , by connecting the intermediate layer with the conductor wiring 14.15, it is possible to arrange the check lands 12.13 in two places on the actual use board part 2 of the board main body l, and thereby, especially in the waste board part. This feature is designed to work effectively when the width of 3 is narrow.

In the above embodiment, the separation line section 7 cut along the boundary between the actually used substrate section 2 and the disposable substrate section 3 of the substrate main body 1 is made into a 7-shaped cut groove. is not limited in any way; for example, the conductor pattern 11 of the check pattern 10 is formed at a position corresponding to each hole.
It is also possible to configure it so that

In addition, it goes without saying that the present invention can be modified in various ways without departing from the gist of the invention.

[Effects of the Invention] As is clear from the above description, according to the present invention, there is an actual use board portion on which electronic components are mounted, and a waste material used as a processing margin of a mounting machine adjacent to this actual use substrate portion. A printed circuit board having a board part and having a separation line part cut along the boundary part between the actual use board part and the disposable board part, A conductive check pattern is provided across the check pattern, and each check pattern is provided with check lands that are contacted with the tester electrodes of the electrical tester through the boundary between them. It is possible to automatically check for the presence or absence of machining on the separated line parts using electrical inspection, which can significantly reduce inspection costs and also detect machining defects on the board with high accuracy. Therefore, it is possible to provide a circuit wiring board having excellent effects such as:

[Brief explanation of drawings]

FIG. 1 is a schematic plan view of the main parts showing a first embodiment of the circuit wiring board according to the present invention, FIG. 2 is an enlarged sectional view of the main parts taken along the line ■-■ in FIG. 1, and FIG. FIG. 4 is an enlarged sectional view of the main part taken along the line TV-IV in FIG. 3; FIG. 5 is a schematic plan view of the main part showing the third embodiment of the present invention. A plan view, FIG. 6 is an enlarged sectional view of the main part taken along the line VI-VI in FIG. 5, FIG. 7 is a schematic plan view of the main part of a conventional circuit wiring board, and FIG. FIG. 3 is an enlarged cross-sectional view of main parts. DESCRIPTION OF SYMBOLS 1... Board main body, 2... Actual use board part, 3... Discarded board part, 7... Separation line part. 10...Check pattern, 11...Conductor pattern, 12.13...Check land, P...Electronic component. Applicant's agent Patent attorney Takehiko Suzue 3
2 Figure 1 Figure 8 Figure 5 Cause 7 Figure 8

Claims (3)

[Claims] (1) It has an actual use board part on which electronic components are mounted, and a waste board part used as a processing margin of a mounting machine adjacent to the actual use board part, and the said real use board part and the waste board part. A circuit wiring board in which a separation line portion is cut along the boundary between . A circuit wiring board characterized in that check lands are provided, each of which is contacted by a tester electrode of an electrical testing machine through the boundary portion. (2) The circuit wiring board according to claim 1, wherein the separation line portion is formed by a V-shaped cut groove. (3) The circuit wiring board according to claim 1, wherein the separation line portion is formed by a perforation.