JPH05243696A - Assorted printed-circuit board - Google Patents

Abstract

PURPOSE:To make it easy to inspect and adjust the printed-circuit board on which one module is formed and circuit blocks are distributed even when the number of the boards is increased by providing the circuit patterns for adjustment which electrically connect each of the circuit blocks through bridges. CONSTITUTION:Narrow bridges 11a, 12a, 13a, and 14a are formed to connect an assorted printed-circuit board 10 with each of the printed-circuit boards 11, 12, 13, and 14. In the wiring patterns, the wiring patterns g1, h1, h2, h3, i1, i2, and i3 for adjustment, which constitute electronic circuits by connecting the circuit blocks, are formed when the wiring circuit patterns are formed in order to conduct inspections, adjustments, and others. At the end positions of the electronic circuits, adjustment lands a1, a2, b1, b2, c1 and c2 are formed for executing inspections and adjustments. The check land a1 and a2 are connected externally to a tester or other adjustment jigs. Then, electrical signals are inputted and output for the inspection and adjustment of the electronic circuits in order to find discontinuity, short circuit, or any other failures.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a collective printed circuit board, and more particularly to a collective printed circuit board formed by forming at least two printed circuit boards having circuit blocks electrically connected to each other.

[0002]

2. Description of the Related Art A printed circuit board mounted in an electronic device such as a tuner or a television receiver has a thin plate base material such as paper or glass impregnated with or coated with a resin material, and further has a thin film form over its entire upper surface. A predetermined wiring pattern is formed by a photoresist method or the like on a laminated plate on which a conductive material or the like is adhered, and further capacitors, resistors, ICs (integrated circuits)
An electronic circuit is configured and formed by mounting electronic components such as.

In the above electronic equipment, since a complicated electronic circuit is constructed, a plurality of printed circuit boards are often combined to form one module. for that reason,
The printed circuit board is formed by forming a so-called collective printed circuit board on which a plurality of printed circuit boards, each of which is electrically connected and constitutes an electronic circuit, is formed on the laminated board. Is temporarily connected by an external device for inspection and adjustment, and then divided to form.

Here, a conventional printed circuit board and a method of adjusting the same will be described with reference to FIGS. First, in FIG. 3, 4 is electrically connected to form an electronic circuit.
1 shows a collective printed circuit board 20 in which a number of printed circuit boards 21, 22, 23, 24 are formed. Since the printed boards 21, 22, 23, and 24 are separated and separated from the collective printed board 20, the laminated board 20a is punched into a predetermined printed board shape in advance.
In addition, it is not completely divided in consideration of a post-process such as an inspection described later, and for example, a plurality of bridging portions (connecting portions) 21a, 22a, 23a, 24a formed on each side of the outer periphery of the printed board.
It is fixed to the printed circuit board 20 by means of. However, the bridge portions 21a, 22a, 23a, 24
a is the printed circuit board 20 to the printed circuit board 2
1, 22, 23, and 24 are formed with a narrow width so that they can be easily separated and separated.

Then, a predetermined wiring pattern (not shown) is formed on the laminated plate 10a by a photoresist method or the like, and electronic parts or the like are further mounted on the upper surface to form a circuit block (not shown). After that, the above-mentioned inspection / adjustment, etc. are carried out, and the bridge portions 21a, 22a, 23a, 24
The printed boards 21, 22, 23, and 24 are formed by dividing a. The printed circuit boards 21, 22, 23,
In 24, an electronic circuit is formed by electrically connecting the circuit blocks. For example, printed circuit board 21
When the circuit blocks are connected to the printed circuit board 22, the electronic circuit D shown by the broken line in the drawing is configured, and the electronic circuits are also configured on the printed circuit boards 21 to 24.

The above-mentioned printed boards 21, 22, 23,
In the case of conducting inspection / adjustment of wiring pattern disconnection, failure of electronic parts, etc. at 24, the above-mentioned inspection / adjustment is applied not only to the circuits formed on each printed circuit board 21, 22, 23, 24, but also to the electronic device described above. The circuit is also performed.
Therefore, each of the printed boards 21, 22, 23, 24
On the wiring pattern of
Adjustment land for adjustment (check land)
d ₁ , d ₂ , d ₃ , d ₄ , e ₁ , e ₂ , e ₃ , e ₄ , e
₅ , f ₁ , f ₂ , f ₃ , f ₄ are formed.

That is, check lands d ₁ and d ₂ are formed on the printed board 21 and check lands d ₃ and d ₄ are formed on the printed board 22 so that the electronic circuit D is formed. In addition, check land e on the printed circuit board 21
_1, check land e ₂ on the printed circuit board 22, by connecting the check lands e ₅ on check land e _3, e ₄ and printed circuit board 24 on the printed circuit board 23 other electronic circuit is constituted, furthermore, a printed circuit board Check land f ₁ on 21 and check land f on printed circuit board 22
₂ , the check land f ₃ on the printed circuit board 23 and the check land f ₄ on the printed circuit board 24 are connected to form another electronic circuit.

FIG. 4 shows a method of adjusting the electronic circuit D. First, the check land d ₁ on the printed board 21 and the check land d ₃ on the printed board 22 are electrically connected by the jig pins 25. Next, the check land d ₂ on the printed board 21 and the printed board 2
The check land d ₄ on 2 is connected by an adjusting jig such as a tester. Then, a predetermined electric signal is input and output to inspect and adjust the electronic circuit D. Further, although not shown in the figure, in the adjustment of the other electronic circuits E and F as well, first, the electronic circuits E and F are connected by the jig pin or the like and the above adjustment is performed.

[0009]

However, since the check lands are provided according to the electronic circuits, the number of the check lands increases as the number of the electronic circuits increases, and the electronic circuits are formed between a plurality of printed circuit boards. In some cases, the number will be enormous. Therefore, it is necessary to increase the area of the printed circuit board for forming the check land, which may increase the size of the electronic device itself.

Further, although external tools such as jig pins must be prepared according to the number of check lands, the inspection and adjustment work becomes complicated and complicated when the number of external tools increases. Furthermore, when an electronic circuit is composed of a plurality of printed circuit boards, wire connection and the like must be performed, which further complicates the adjustment work.

The present invention has been proposed in view of the above circumstances, and an object thereof is to provide a collective printed circuit board that can be easily inspected and adjusted.

[0012]

In order to achieve the above-mentioned object, the present invention provides at least two circuit board regions which are connected to each other through a bridge and are separably formed in the bridge. In the collective printed circuit board formed by forming the circuit block to be used by being electrically connected, the above-mentioned problems are caused by the formation of the adjustment circuit pattern for electrically connecting the circuit blocks through the bridge portion. To solve.

[0013]

The aggregate printed circuit board of the present invention can reduce the number of check lands even if a plurality of printed circuit boards are formed by arranging circuit blocks constituting a plurality of electronic circuits on the aggregate printed circuit board. Not only can a small printed circuit board be formed, but also inspection and adjustment can be performed easily.

[0014]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Specific embodiments to which the present invention is applied will be described in detail below with reference to the drawings. This embodiment is an embodiment applied to a single-sided board, and FIG. 1 is a schematic front view showing one embodiment of the collective printed board according to the present invention, and FIG.
FIG. 4 is a schematic cross-sectional view showing an inspection state of the collective printed circuit board of this embodiment.

First, referring to FIG. 1, a collective printed circuit board 10 is provided.
A plurality of, for example, four printed circuit boards 11, 12, 13,
14 has a predetermined printed circuit board shape by punching or the like and is perforated with a narrow width along the outer periphery thereof. A bridging portion (connecting portion) 11a formed by connecting the collective printed circuit board 10 and the printed circuit boards 11, 12, 13, 14 is provided on each side of the outer periphery of the printed circuit boards 11, 12, 13, 14. 12a, 13a, 14a are formed with a narrow width so that the printed boards 11, 12, 13, 14 can be easily separated and separated from the collective printed board 10 by bending or shearing, for example.

Further, the printed boards 11, 12, 1
The printed circuit boards 11, 12, 13, 14 are provided on the printed circuit boards 3, 14, respectively.
A predetermined wiring pattern (not shown) is formed by a photoresist method or the like according to an electronic device incorporating the device, and then electronic parts (not shown) such as a capacitor, a resistor, and an IC (integrated circuit) are mounted on the wiring pattern. , A predetermined circuit block (not shown) is configured.

It should be noted that the wiring patterns are connected to the circuit blocks to form an electronic circuit for conducting inspections and adjustments, which will be described later, and adjustment circuit patterns (hereinafter referred to as adjustment circuit patterns) g ₁ and h. ₁ , h ₂ , h ₃ , h ₄ ,
i ₁ , i ₂ , and i ₃ are formed by a photoresist method or the like when the wiring circuit pattern is formed. For example, between the printed circuit board 11 and the printed circuit board 12, the adjustment circuit pattern g ₁ is provided via the upper surfaces of the bridge portions 11a and 12a.
Is formed, and as a result, an electronic circuit A indicated by a broken line in the drawing is formed.
Is configured. Similarly, the adjustment circuit patterns h ₁ , h ₂ , and h are provided between the printed circuit boards 11 to 14.
₃ and h ₄ are formed, and other electronic circuits are formed. Further, adjustment circuit patterns i ₁ , i ₂ , i ₃ are formed on the printed circuit boards 11, 12, 13, 14 to form another electronic circuit. Further, adjustment land portions (check lands) a ₁ , a ₂ , b ₁ , b ₂ , c ₁ , c ₂ for inspection / adjustment are formed at the terminal position of the electronic circuit.

Next, the plurality of printed circuit boards 11 and 1
The inspection and adjustment of disconnection of the electronic circuit formed over 2, 13, and 14 and failure of electronic components will be described. The inspection / adjustment is performed on each printed circuit board 11, 12, 13, 14
Circuit and the adjustment circuit patterns g ₁ , h ₁ ,
This is performed for the electronic circuit formed by h ₂ , h ₃ , h ₄ , i ₁ , i ₂ , and i ₃ .

FIG. 2 shows the adjustment state of the electronic circuit A. The electronic circuit A has an adjustment circuit pattern g formed over the printed circuit boards 11 and 12 as described above.
₁ , and check lands a ₁ and a ₂ are further formed at the ends thereof. Here, the check land a ₁ and the check land a ₂ are externally connected by an adjusting jig such as a tester. At this time, a predetermined electric signal is input and output to inspect and adjust the electronic circuit, and the presence or absence of a failure such as a disconnection or a short circuit is inspected. If there is the above-described failure, the adjustment is performed.

The same applies to the other electronic circuits. The check lands b ₁ and b ₂ on the printed circuit board 13, the check lands c ₁ on the printed circuit board 11 and the check lands c ₂ on the printed circuit board 14 are arranged in the same manner. Connect and perform the above-mentioned inspection and adjustment.

The present invention is not limited to the above-described embodiment, and the number of printed boards formed on the collective printed board is not limited to four, and two or more printed boards are connected to form an electronic circuit. It is possible to obtain the same effect by applying it to the collective printed circuit board constituting the above. Further, the printed circuit board is not limited to the single-sided board of the above-described embodiment, and the same effect can be obtained also in a collective printed circuit board for supplying a double-sided board or the like.

Further, in the case where a plurality of printed circuit boards formed on the collective printed circuit board are perforated at a position corresponding to the outer periphery of each printed circuit board to form a predetermined printed circuit board shape, The above effect can be obtained by electrically connecting the circuit blocks formed on each printed circuit board through the bridge portion between the perforations connecting the printed circuit boards and the collective printed circuit board.

[0023]

As is apparent from the above description, according to the aggregate printed circuit board of the present invention, at least two circuit boards which are connected to each other through the bridge portion and are separable at the bridge portion. In a collective printed circuit board in which circuit blocks that are used by being electrically connected to each other are formed in a region, a circuit pattern for adjustment that electrically connects each circuit block through the bridge portion is provided. Thus, even if the number of printed boards on which one module is formed and circuit blocks are arranged increases, inspection and adjustment can be easily performed. Moreover, the area of the printed circuit board can be reduced, and the electronic device having the printed circuit board can be downsized. Moreover, not only the number of adjustment jig pins can be reduced, but also the inspection work can be simplified.

[Brief description of drawings]

FIG. 1 is a schematic front view showing an embodiment of an assembled printed circuit board according to the present invention.

FIG. 2 is a schematic front view showing the circuit configuration of FIG.

FIG. 3 is a sectional view taken along the line II of FIG. 1 showing a connection state in the inspection / adjustment process of the collective printed circuit board according to the present invention.

FIG. 4 is a schematic front view showing an example of a conventional collective printed circuit board.

5 is a cross-sectional view taken along the line II-II of FIG. 4 showing a connection state in a conventional collective printed circuit board inspection / adjustment step. .

[Explanation of symbols]

10 ... Collective printed circuit board 10a ... Laminated board 11, 12, 13, 14 ... Printed circuit board 11a, 12a, 13a, 14a ... Cross-linking part a ₁ , a ₂ , B ₁ , b ₂ , c ₁ , c ₂ ... Check land g ₁ , h ₁ , h ₂ , h ₃ , h ₄ , i ₁ , i ₂ , i ₃ ...
・ Circuit pattern for adjustment

Claims (1)

[Claims] 1. A collective print comprising circuit blocks that are connected to each other through a bridging portion and are electrically connected to each other in at least two circuit board regions that are separably formed in the bridging portion. A printed circuit board, wherein the circuit board is provided with an adjusting circuit pattern for electrically connecting each circuit block through the bridge portion.