JP2000299537A - Electric board device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To contrive the effective application of the space of an electric board, to provide a miniaturization of the board itself and also to provide specially the constitution (joining, branching and replacement) of a wiring pattern at low cost and at a high efficiency. SOLUTION: This electric board device has a wiring pattern A to be intersected a flexible printed board 1 in electrically nonconnection, a flexible printed board 5 which has connection lands 3 and 4 arranged on both sides of the wiring pattern A and a connection 1 and 2 arranged at a position different from the positions of the lands 3 and 4, and the flexible printed board 1 having a connection land 2a connected with the 1 and 2 and connection lands 3a and 4a which are linked with this land 2a through the pattern A and are connected with the lands 3 and 4.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electric board device suitable for high-density mounting, and more particularly to an electric board device having improved flexibility in pattern wiring.

[0002]

2. Description of the Related Art In recent years, electronic devices have become more sophisticated, and the number of internal electronic components and the substrates on which the electronic components are to be mounted has been increasing. Against this background, further miniaturization of imaging devices such as cameras has been demanded, and it has become necessary to mount the electronic components and boards efficiently.

[0003] Through holes are generally used in order to make the above-mentioned substrate small and efficient. In this method, a circuit pattern of one layer of a multilayer printed circuit board is electrically connected to a circuit pattern of another layer to form a predetermined circuit pattern.

[0004] The use of the through-holes in this way makes it possible to use a printed circuit board in which the merging, branching, and replacement of wiring are complicated.
It can be easily configured.

[0005] Further, with the miniaturization of the electronic equipment described above, flexible printed circuit boards have been widely used. For example, a flexible board adopted for a camera or the like includes a CPU as a system controller, an EEPROM as a memory, and an IF as an interface thereof.
An IC or the like is mounted.

For example, Japanese Unexamined Utility Model Publication No. 56-40684 discloses a method of connecting circuit patterns of the same layer using a flexible printed circuit board and a method of using a wiring material such as a lead wire instead of the flexible printed circuit board. Have been.

[0007]

However, as described above, in order to form a circuit pattern using through-holes, it is a prerequisite that the substrate is a multi-layer substrate. In this case, there is an advantage in cost, but when the number of through holes is small, the advantage in cost is small.

In the technique disclosed in Japanese Utility Model Laid-Open Publication No. Sho 56-40684, it is disclosed that the crossing pattern is avoided and connected by another substrate.
There is no suggestion about the connection route or pattern configuration of the circuit pattern.

Here, for example, as shown in FIG.
If branching and merging are performed on three or more lines with LW (tin-plated wire), solder lands are required separately,
A plurality of LWs will be soldered to one solder land.

That is, in the example of FIG. 2A, in order to connect the wiring pattern a to
0a and 100b, and solder lands 101a and 101b for connecting the wiring pattern a 'to the a "and LW101.
b is required.

Further, in the example of FIG. 2B, although the solder lands 100b and 101a can be shared as the solder lands 200b, the shared solder lands 2b and 101a can be used.
00b becomes larger and the solder land 200b becomes 2
A complicated operation of soldering the LWs 200 and 201 is required.

As described above, as the number of solder lands increases, the size of the flexible printed circuit board increases, and the number of times of soldering also increases, resulting in an increase in man-hours, that is, an increase in product cost. Also, in order to solder a plurality of LWs to one solder land, it is necessary to increase the size of the solder land, or it is necessary to fix a plurality of LWs at the same time, resulting in an increase in man-hours and reliability of the soldering. descend.

At this time, if the single-sided flexible printed circuit board is replaced with a double-sided flexible printed circuit board, the above problem can be solved by using the above-described through-holes, but the problem of increased cost arises. .

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned problems, and has as its object to achieve efficient use of the substrate space, to achieve a reduction in the size of the substrate itself, and to particularly achieve the pattern configuration (merging, branching). (Replacement) is provided at low cost and with high efficiency.

[0015]

In order to achieve the above object, according to a first aspect of the present invention, there are provided a plurality of connection lands, each of which has a first connection land separated from each other by a wiring pattern. An electric board, having a plurality of connection lands connected to the connection lands of the first electric board,
And a second electric board electrically connected to each other by a wiring pattern.

In the second aspect, a wiring to be crossed in an electrically non-connected manner, a plurality of first connection lands arranged on both sides of the wiring, and a position different from the first connection land are provided. A first electric board having a second connection land disposed thereon, and a plurality of third electric boards connected to the first connection land.
And a second electric board having a fourth connection land connected to the third connection land by a wiring pattern and connected to the second connection land. Electrical board device is provided.

According to a third aspect, there is provided the electrical board device according to the first and second aspects, wherein the second electrical board is a flexible printed board. According to the above-described first to third aspects, the following operations are achieved.

That is, in the first aspect of the present invention, a plurality of connection lands are arranged on the first electric board so as to be separated from each other by the wiring pattern, and the second electric board is provided with the above-mentioned connection lands. A plurality of connection lands connected to the connection lands of the first electric board are electrically connected to each other by a wiring pattern.

In the second aspect, the first electric board is provided with a wiring to be electrically disconnected and crossed, a plurality of first connection lands arranged on both sides of the wiring, A second connection land is provided at a position different from the first connection land. A plurality of third connection lands connected to the first connection land are provided on the second electric board. 3
And a fourth connection land connected to the second connection land by a wiring pattern.

In a third aspect, in the first and second aspects, a flexible printed board is employed as the second electric board.

[0021]

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1A is a diagram showing a configuration of an electric board device according to one embodiment of the present invention. As shown in the drawing, wiring patterns A to C and wiring patterns A ′ and A ″ are patterned on the flexible printed board 5, and connection lands 2 a are provided at predetermined positions on the wiring pattern A. Similarly, connection lands 3a and 4a are provided on the wiring patterns A 'and A ".

On the other hand, connection lands 2 to 4 are provided on the flexible printed circuit board 1 as shown in FIG.
The wiring pattern for electrically connecting the connection lands 2 to 4 is further patterned. The flexible printed board 1 can be manufactured simultaneously in an empty space of the material when manufacturing the flexible printed board 5 (see FIG. 1C). Then, the connection lands 2a, 3a, 4a of the flexible printed board 5 and the connection lands 2, 3, 3 of the flexible printed board 1 are connected.
4 are electrically connected to each other.

Here, the actual connection is shown in FIG.
This is as shown in FIG.

That is, as shown in FIG. 2, the connection lands 2a, 3a, 4a of the flexible printed board 5 and the connection lands 2, 3, 3 of the flexible printed board 1 are connected.
4 are electrically connected to each other, so that the wiring pattern A formed on the flexible printed circuit board 5 and drawn out from the connection pattern 6 for electrically connecting to another electric circuit board is formed using the flexible printed circuit board 1. And are electrically connected to the wiring patterns A ′ and A ″.

In the present embodiment, a so-called flexible printed board is taken as an example, but the present invention is not limited to this, and it goes without saying that the same effect can be obtained with a hard printed board. Further, as the wiring pattern, a wiring pattern for mutually transmitting output signals from a CPU as a system controller or an EEPROM as a memory, an interface IC thereof, and a wiring pattern for supplying power to each of the above components can be considered. However, the present invention is not limited to the above-described wiring patterns, and can correspond to a wide variety of wiring patterns.
It is possible to join.

In the case of the prior art as described above, FIG.
As shown in (a), the solder lands 100a and 100b are
In order to connect the wiring pattern a 'to a ", the solder land 101a and the solder land 101b had to be soldered with the LW 101. Further, as shown in FIG. As shown, the solder lands 100b and 101a are connected to the solder lands 200b.
, The solder land 200a and the solder land 200b must be soldered with the LW 200 in order to connect the wiring pattern a to a ′, and the solder land must be soldered in order to connect the wiring pattern a ′ to a ″. 200b and the solder land 201a had to be soldered with the LW 201. Therefore, the operation was very complicated.

On the other hand, in the present embodiment, there is no need to provide an unnecessary number of connection lands, and there is no complicated operation such as soldering two LWs to one connection land. Since only the connection lands 2a, 3a and 4a of the flexible printed board 5 and the connection lands 2, 3 and 4 of the flexible printed board 1 need to be connected, the size of the apparatus can be reduced and the workability can be improved. Will be.

The above embodiments of the present invention include the following inventions.

That is, first, there are provided a first electric board on which a plurality of wiring patterns are provided, and lands connectable to at least two of the wiring patterns provided on the first electric board, respectively. A second electric board having the lands connected to the same potential by a wiring pattern, and connecting the lands provided on the second electric board to the wiring patterns provided on the first electric board. Thus, an electric board device is provided in which the terminal configuration of the wiring pattern provided on the first electric board is changed.

Secondly, there is provided the electric board device according to the first aspect, wherein at least one of the first and second electric boards is a flexible printed board. Thirdly, the wiring board of the first electric plan corresponding to the land provided on the second electric board is not adjacent to each other, and the electric board apparatus according to the first aspect is provided. Is done.

Fourth, the first and second electric boards are:
The electric board device according to the first aspect is provided, which is a flexible printed circuit board made of the same material sheet.

Fifth, the first and second electric boards are:
The electric board device according to the first aspect, which is a flexible printed circuit board manufactured simultaneously with the same material sheet.

Sixth, the terminal configuration of the wiring pattern is as follows.
The electrical board device according to the first aspect, wherein the electrical board device is modified so as to substantially reduce the number.

Seventh, a plurality of wiring patterns are provided,
A first flexible printed circuit board having a first land formed on at least two of them, and a second land corresponding to the first land provided on the first flexible printed circuit board; A second flexible printed circuit board connected between the second lands at the same potential by a wiring pattern, and the first and second lands provided on the first and second flexible printed circuit boards are connected to each other. An electrical board device is provided, wherein the number of terminals of the wiring pattern provided on the first flexible printed board is substantially reduced by the electrical connection.

Eighth, the electrical board device according to the seventh aspect is provided, wherein the wiring patterns of the first flexible printed circuit board on which the first lands are formed are not adjacent to each other. .

Ninth, a first flexible printed board provided with a first connection pattern and a second flexible printed board provided with a second connection pattern electrically connectable to the first connection pattern are provided. And electrically connecting the first connection pattern and the second connection pattern to perform at least one of merging, branching, and replacement of the conductive pattern of the first flexible printed circuit board. Is provided.

Tenthly, there is provided the electric board device according to the ninth aspect, wherein the second flexible printed board is manufactured from the same material sheet by combining the first flexible printed board. .

Eleventh, the second flexible printed circuit board is manufactured integrally with the first flexible printed circuit board via a connection portion, and the connection portion is cut and used. An electric board device according to claim 9 is provided.

Twelfth, a first wiring (corresponding to A ′ in FIG. 1) and a second wiring electrically non-connected to the first wiring (corresponding to A ″ in FIG. 1) A third wiring which is not electrically connected to the second wiring (corresponding to A in FIG. 1), and a first to third wiring which are respectively electrically connected to the first to third wirings. And a first electric board (corresponding to 3a, 4a, and 2a in FIG. 1) and a first electric board (corresponding to 5 in FIG. 1) electrically connected to the first connection land. 4th
And a fifth connection land (corresponding to 3 in FIG. 1) that is electrically connected to the fourth connection land and electrically connected to the second connection land. 1 and 4), and a sixth connection land electrically connected to the fourth and fifth connection lands and electrically connected to the third connection land (2 in FIG. 1). And a second electric board (corresponding to 1 in FIG. 1).

[0041]

As described in detail above, according to the present invention,
It is an object of the present invention to provide an electric board device having a mounting structure capable of effectively utilizing a board space, realizing a reduction in the size of the board itself, and in particular, performing pattern configuration (merging, branching, and replacement) at low cost and high efficiency. it can.

[Brief description of the drawings]

1A is a diagram showing a configuration of an electric board device according to an embodiment of the present invention, FIG. 1B is an external configuration diagram of the electric board device, and FIG. It is a figure for explaining simultaneous manufacture of 1,5.

FIG. 2 is a diagram showing a configuration of an electric board device according to the related art.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Flexible printed board 2 Connection land 2a connection land 3 Connection land 3a connection land 4 Connection land 4a connection land 5 Flexible printed board 6 Connection pattern

Claims (3)

[Claims] A first connection land having a plurality of connection lands, each connection land being separated from each other by a wiring pattern.
And a second electric board having a plurality of connection lands connected to the connection lands of the first electric board, which are electrically connected to each other by a wiring pattern. An electrical board device characterized by the following. 2. A wiring which is to be electrically disconnected and crosses, a plurality of first connection lands arranged on both sides of the wiring, and a plurality of first connection lands arranged at positions different from the first connection lands. A first electric board having two connection lands; a plurality of third connection lands connected to the first connection lands; a third connection land connected to the third connection lands by a wiring pattern; A second electric board having a fourth connection land connected to the second connection land. 3. The electric board device according to claim 1, wherein the second electric board is a flexible printed circuit board.