JPH06310190A - Wiring structure against abnormal voltage - Google Patents

Abstract

PURPOSE:To make the conformity of the whole of circuits excellent, and thereby prevent the equipment from being damaged by forming a conductor section making up the joint section of wiring paths into a specified shape, and concurrently laminating a specified sheath layer and a specified insulating layer on the conductor section. CONSTITUTION:The joint section of electric wiring paths 3a through 3c, is formed on a conductor 1 in a curved shape, thunder surge current which is induced from the other direction through a grounding wire path 3c perpendicularly against the grounding wiring paths 3a and 3b lined up in a linear line, forms each discharge passage forming an abuse angle to any direction. A sheath layer 4 composed of semi-conductors or oxides is provided for the conductor 1, and a sheath layer 5 composed of an insulator is laminated over the layer 4. This constitution thereby allows steep waves due to surge voltage to rush into the semi-conductor layer or the oxide layer while passing through an alloy layer or an ununiform electron arranging layer so as to be propagated while being made uniform, and the uniformity of the whole of circuits is excellent, so that the equipment is prevented from being damaged due to surge current.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a wiring structure capable of protecting equipment, elements and the like in an electric circuit from abnormal voltage.

[0002]

2. Description of the Related Art Conventionally, measuring equipment, control equipment, office automation equipment,
In order to protect communication equipment, etc. from abnormal voltage and current entering due to lightning, etc., a ground bus bar is extended from the ground electrode buried in the ground, and the ground side of the above equipment is connected to this ground bus bar. It was In integrated circuits such as ICs and LSIs and printed circuit boards, the withstand voltage level is closer to
As a protection measure against a strong steep wave, consideration and countermeasures in the circuit form and the functional structure form were not provided.

[0003]

However, when a steep wave enters the installation location of the measurement equipment, control equipment, OA equipment, communication equipment, or the integrated circuit such as IC or LSI or the wiring of the printed circuit board, It is not possible to propagate a remarkable steep wave efficiently, so that the consistency within the device or package cannot be obtained, or a part of the device does not have the same potential and the device, IC, LSI, etc. are integrated. There is a problem that elements such as circuits and printed circuit boards are damaged.

The present invention has been made to solve the above-mentioned conventional problems, and its object is to reduce the propagation loss of the incoming lightning surge voltage / current and to reduce the surge waveform. An object of the present invention is to provide a wiring structure for suppressing abnormal voltage that can suppress steep waves.

[0005]

As a means for achieving the above object, in the wiring structure for preventing abnormal voltage according to claim 1 of the present invention, a semiconductor or an oxide is formed at a bent portion or a joining portion of a wiring path in an electric circuit at a right angle. A coating layer made of a material is provided, and a coating layer made of an insulator is further provided on the coating layer made of the semiconductor or oxide.

According to a second aspect of the present invention, there is provided an abnormal voltage countermeasure wiring structure according to the first aspect, in which a bent portion or a merging portion of the wiring path at a right angle is formed in a curved shape. did.

According to a third aspect of the present invention, there is provided the abnormal voltage countermeasure wiring structure according to the first aspect, wherein the wiring path is formed on an insulating substrate and the wiring path is bent at a right angle. The merging portion is formed in a curved shape.

[0008]

In the wiring structure for preventing abnormal voltage according to claim 1 of the present invention, the steep wave due to the surge voltage causes an alloy layer formed between the conductor and the semiconductor of the wiring path or between the conductor and the oxide, Or, after entering the semiconductor coating layer or the oxide coating layer through the non-uniform electron coordination layer, the steep part is averaged and propagated to some extent to further improve the integrity of the entire circuit. It is possible to prevent equipment damage.

Further, in the wiring structure for preventing abnormal voltage according to the second aspect, a steep wave due to an electric surge or the like propagates by smoothly changing its direction at a bent portion or a confluent portion of the wiring path at a right angle. Therefore, originally, the impedance characteristic becomes large in the right-angled part where the steep wave enters, and the resistance value of the wiring path is increased to cause the damage to the equipment, but the damage to the equipment due to the change in the impedance characteristics should be reduced. You can
In addition, in the bent portion, the steep portion of the steep wave is averaged and propagated to some extent by the alloy layer or the coating layer of the semiconductor or the oxide, thereby mitigating the adverse effects of the remarkably steep surge voltage and current. However, it is possible to further improve the matching and equipotentialization of the entire circuit.

Further, in the abnormal voltage countermeasure wiring structure according to the present invention, when a strong steep wave that is closer to the withstand voltage level enters the wiring path, the steep wave is an alloy layer of the wiring path.
Or after rushing into the coating layer of semiconductor or oxide,
The steep portion is delayed or lowered, and when the abnormal abnormal voltage or the pulse wave propagates through the portion, the integrity of the entire circuit can be further improved and the damage to the device can be prevented.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A first embodiment of the present invention will be described in detail below with reference to the drawings. 1 is a plan view showing an abnormal voltage countermeasure wiring tool of the present embodiment, and FIG. 2 is a cross-sectional view taken along the line A-B-A in FIG. 1. In FIG. 1, reference numeral 1 is a conductor portion forming a junction of wiring paths. Reference numerals 2a to 2c are connection portions thereof, 3a to 3c are ground wires which are wiring paths, 4 is a semiconductor coating layer, and 5 is an insulator coating layer.

The conductor portion 1 is for forming a discharge passage of a lightning surge current, and in this embodiment, it is perpendicular to the grounding wires 3a and 3b which are arranged in a straight line and serve as grounding busbars. It is formed in a substantially triangular shape so that the lightning surge current drawn from the grounded electric wire 3c forms an obtuse-angled discharge path in any direction. In FIG. 1, L is a discharge path provided from the ground wire 3c in the direction of the ground wires 3a and 3b, and both edges La and Lb of the discharge path extend inward of the conductor part 1 of the ground wire 3c. It is formed in a concentric shape (curved shape) with a large circle that is substantially in contact with the wire and the center lines of the ground wires 3a and 3b.
The cross-sectional shape of the discharge passage L is formed of a conductive material having a low electric resistance value into a substantially columnar shape.

The connecting portions 2a, 2b and 2c are for connecting the ground wires 3a, 3b and 3c to the conductor portion 1 in a fixed state, and each connecting portion has an insertion hole 20 and has a cylindrical shape. The slits 21 that are formed and that open the insertion hole 20 in the axial direction are provided on both sides of the insertion hole 20 over substantially the entire length of the insertion hole 20. This slit width is the insertion hole 2
Even if a predetermined ground wire is inserted into 0 and tightened, a gap is appropriately formed. In addition, clamping seats are provided in parallel above and below the slit 21 in parallel,
Through holes 22 for bolting are formed in the tightening seats.

The semiconductor coating layer 4 serves as a temporary charging body, and is made of, for example, silicon, zinc oxide, cuprous oxide or the like, and the outer surface of the conductor portion 1 excluding the connection portions 2a, 2b and 2c. It is formed by coating. In this embodiment, the conductor portion 1 is formed in a hollow shape, and the inside thereof is also covered with the semiconductor. In this case, the inner coating may be hollow.

The insulator coating layer 5 is obtained by coating the entire semiconductor coating layer 4 with an insulator made of ceramic, synthetic resin or the like.

Next, the operation will be described. The abnormal voltage countermeasure wiring tool is used at a confluence portion of a grounding wire that is drawn indoors for grounding a measuring device or the like. That is, in the middle of the continuous ground electric wires 3a and 3b, the ground electric wires 3c, which join from the direction perpendicular to the ground electric wires, are integrally connected. In this case, each ground wire is inserted into the insertion hole 20 and then fixed by inserting a bolt into the through hole 22 and tightening or fixing by brazing. When the ground wire 3a side is grounded to the ground outdoors and a lightning surge or the like enters from the ground wire 3c side to this abnormal voltage countermeasure wiring tool, first, the surge current is generated by the conductor portion 1.
Change the direction smoothly along the edge La of the ground wire 3a
Propagate to the side. Therefore, since the discharge is less likely to occur in the direction changing portion, the propagation loss is less, and the impedance characteristic due to the reflected wave or the like is less likely to increase.

The lightning surge or the like is delayed by the semiconductor coating layer 4 or the uneven electron coordination layer formed between the conductor portion 1 and the semiconductor coating layer at the steep portion of the steep wave. Change or decrease. In this way, since the matching of the entire circuit is further improved, the propagation loss is small.

As described above, in the abnormal voltage countermeasure wiring tool of this embodiment, even if a lightning surge or the like enters the measuring equipment installation side, there is little discharge at the direction changing portion of the wiring path. Since the propagation loss is small and the increase in impedance characteristics due to reflected waves and the like is small, it is possible to keep all the measuring equipment installation sides at the same potential, and thus to prevent damage to the equipment due to lightning surge. In addition, steep waves due to lightning surges are delayed or reduced and averaged to propagate,
It is possible to further improve the consistency on the equipment installation side.

Next, a second embodiment will be described with reference to FIG. The present embodiment relates to a wiring path in an IC package, in which 6 is a conductor portion and 7 is an insulating substrate to which the conductor portion 6 is fixed. The conductor portion 6 is a wiring path of an IC and has a curved portion 60 formed in an L-shaped direction changing portion. Then, a coating layer 4 made of silicon, zinc oxide, cuprous oxide or the like is formed on the curved portion 60, and an insulating coating layer 5 is formed thereon.

In this wiring structure, when a strong steep wave that is closer to the withstand voltage level enters the conductor portion 6, after the steep wave rushes into the semiconductor or oxide coating layer 4,
The steep portion is delayed or lowered, and the matching in the circuit can be further improved, so that the damage of the element or the like can be further prevented.

The embodiments of the present invention have been described above.
The specific configuration of the present invention is not limited to this embodiment, and the present invention includes a design change and the like within a range not departing from the gist of the invention.

For example, in the embodiment, the conductor portion 1 has been described as one in which the ground wires are connected in three directions, but the invention is not limited to this.
It may be formed in a substantially L shape and connected in two directions, and the number of connecting portions can be set arbitrarily (see FIGS. 4 to 9). Further, the formation range of the conductor portion of the coating layer, its shape, and the like can be arbitrarily set.

The semiconductor forming the semiconductor coating layer is
Resistive ones can also be used. Further, instead of the semiconductor coating layer, an oxide layer for forming a non-uniform electron coordination layer in the thickness direction may be provided.

The wiring path provided on the insulating substrate may be formed by printing a conductor on the insulating substrate. Further, the earth circuit in the package may be provided with the semiconductor coating layer and the insulator coating layer not only at the corners but over the entire length.

[0025]

As described above, in the abnormal voltage countermeasure wiring structure according to the first aspect of the present invention, since it has the above-mentioned structure, a steep wave due to a surge voltage or the like causes a steep wave due to a surge voltage or the like in the semiconductor coating layer of the wiring path or After plunging into the uneven coordination layer of electrons,
Since the steep portion is averaged and propagated, it is possible to improve the entire circuit and prevent damage to the device.

Further, in the wiring structure for preventing abnormal voltage according to the second aspect of the invention, because of the above-mentioned configuration, even if a lightning surge or the like enters the equipment installation side, discharge can occur at the direction changing portion of the wiring path. Since it is small, the propagation loss is small, and the impedance characteristics due to reflected waves and the like are not increased, so that the compatibility with the equipment installation side can be enhanced, and thus the equipment can be prevented from being damaged due to electric surge or the like. In addition, steep waves due to a lightning surge or the like are delayed or reduced, propagated after being averaged, and the effect that the consistency on the equipment installation side can be further improved can be obtained.

Further, in the wiring structure for preventing abnormal voltage according to the third aspect of the present invention, since it has the above structure, it is closer to the withstand voltage level of the circuit formed on the printed board, the integrated circuit such as IC, LSI, or the printed board. When a strong steep wave enters, the steep wave is delayed in the steep part due to the semiconductor coating layer or the non-uniform electron coordination layer and propagates as a result of propagation. Since it is possible to further improve the consistency of the circuit, it is possible to prevent the circuit from being damaged.

[Brief description of drawings]

FIG. 1 is a plan view showing an abnormal voltage countermeasure wiring structure according to a first embodiment of the present invention.

FIG. 2 is a sectional view taken along the line A-B-A in FIG. 1 of the first embodiment.

FIG. 3 is an explanatory diagram showing a part of an IC circuit according to a second embodiment.

FIG. 4 is a plan view showing a substantially L-shaped wiring structure of another embodiment.

FIG. 5 is a plan view showing a generally V-shaped wiring structure according to another embodiment.

FIG. 6 is a plan view showing a substantially r-shaped wiring structure of another embodiment.

FIG. 7 is a plan view showing a substantially rhombic wiring structure according to another embodiment.

FIG. 8 is a plan view showing a wiring structure in which a one-way discharge path is added to the substantially rhombic shape of another embodiment.

FIG. 9 is a plan view showing a wiring structure in which a cross-shaped discharge passage is added to the substantially rhombic shape of another embodiment.

[Explanation of symbols]

 1, 6 conductors forming a confluence part of wiring path 3a, 3b, 3c ground wire which is a wiring path 4 semiconductor coating layer 5 insulator coating layer 60 curved portion L curved discharge passage

Claims (3)

[Claims] 1. A coating layer made of a semiconductor or an oxide is provided at a bent portion or a joining portion of a wiring path in an electric circuit at a right angle,
Furthermore, a wiring structure for preventing abnormal voltage, characterized in that a coating layer made of an insulator is provided on the coating layer made of the semiconductor or oxide. 2. The abnormal voltage countermeasure wiring structure according to claim 1, wherein a bent portion or a joining portion of the wiring path at a right angle is formed in a curved shape. 3. The wiring structure for preventing abnormal voltage according to claim 1, wherein the wiring path is formed on an insulating substrate, and a bent portion or a merging portion of the wiring path in a right angle direction is formed in a curved shape. Wiring structure to prevent abnormal voltage.