JPH06162829A - Electrically conductive transparent body - Google Patents

Abstract

PURPOSE:To prevent a conduction failure from occurring between internal and external conductors due to heat generated at soldering the conductors together by providing a heat resisting plate on the surface of a transparent base having a conductor therein, and providing a hole from which the end face of the conductor is exposed and which is plated at its inner surface. CONSTITUTION:A copper-plated laminate 161 comprising an insulating substrate covered with a copper box is bonded to the surface of a transparent, electrically insulating base portion 10 made from resin or glass and having a conductive mesh 11 made by electrically conductive and insulative wire therein, and is then provided with a hole 15 from which the end face of the conductive mesh 11 is exposed. Both the front and back sides of the copper- plated laminate 161 and the inner surface of the hole 15 are plated with copper 162 and the copper plating 162 and the copper box of the copper-plated laminate 161 are corroded by etching except at the inner surface of the hole 15 and the portion of the copper-plated laminate adjoining to the peripheral edge of the hole 15, so as to manufacture a conductive transparent body 1. When an external conductor is soldered to a conductive surface 16 and connected to the conductor of a conductive mesh 211 via the conductive inner surface layer 17 of the hole 15, the heat of soldering is absorbed by a heat resisting plate 12, whereby a conduction failure that could be caused by heat deformation of the base portion 10 is prevented.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a conductive transparent body suitable for display devices and the like.

[0002]

2. Description of the Related Art The applicant of the present invention is disclosed in JP-A-63-17421.
As described in Japanese Patent Publication No. 6, a conductive transparent body suitable for a display device using an electric element such as a light bulb or a light emitting diode as a display means is proposed. This conductive transparent body is formed by embedding a plurality of conductive wires in a base portion made of a transparent electrically insulating material so as not to short-circuit with each other.

When connecting the conductive wire inside the conductive transparent body to the external conductive wire, first, a hole is formed in the conductive transparent body such that the end face of the conductive wire is exposed, and the inner surface of this hole is plated. The simplest method was to form a conductive layer by applying it and solder an external conductor to this conductive layer.

[0004]

However, in such a conventional connecting structure of a conductive transparent body and an electric element, when the external conductor wire is soldered to the surface of the conductive layer, the heat of the soldering is generated. Since it is transmitted to the base portion of the conductive transparent body, the base portion may be deformed and cracks or peeling may occur in the conductive layer, resulting in poor conduction.

In view of the above problems, the present invention has an object to provide a conductive transparent body which does not cause conduction failure even if an external conductive wire is connected to a conductive wire by soldering.

[0006]

In order to achieve the above object, the conductive transparent body of the present invention comprises a base portion made of a transparent electrically insulating material and a plurality of base portions embedded in the base portion so as not to short-circuit with each other. A conductive wire and a heat-resistant plate adhered to the surface of the base portion are provided, and a conductive surface layer is provided on the surface of the heat-resistant plate, and the end surface of the conductive wire is exposed on the conductive surface layer. The hole is provided, and a conductive inner surface layer continuous with the conductive surface layer is provided on the inner surface of the hole.

[0007]

In the conductive transparent body of the present invention, when the external conductive wire is soldered to the conductive surface layer, the external conductive wire is electrically connected to the conductive wire through the conductive surface layer and the conductive inner surface layer. . At this time, since the heat of soldering is absorbed by the heat-resistant plate before reaching the base portion, it is possible to prevent the base portion from being deformed, thereby peeling off the conductive surface layer or the conductive inner surface layer. It can prevent cracks from occurring.

[0008]

Embodiments of the present invention will be described below in detail with reference to FIGS. 1 and 2 are views showing a conductive transparent body of the present embodiment, in which 10 is a base portion, 11 is a conductive mesh,
12 is a heat-resistant plate.

The base portion 10 is formed by laminating two plate members made of an achromatic or chromatic color transparent electrically insulating material (resin material, glass, etc.).

As shown in FIG. 3, the conductive mesh 11 is constructed by incorporating a plurality of conductive wires 13 in a mesh shape so that they do not short-circuit with each other by using the electrically insulating wires 14 as an assembly material. Is embedded in (is sandwiched between two plate materials). The conductive wire 13 is formed of an ultrafine wire having a diameter or width of 0.1 mm or less, and the wire is formed of a metal wire such as a gold wire, a silver wire, a zinc wire, or a stainless wire. , Which is formed by depositing or plating a metal on the surface of a resin element wire such as a polyester wire. In addition, electrical insulation wire 1
4 is also formed of ultrafine wire having a diameter or width of 0.1 mm or less, and the wire used is a resin wire such as polyester wire or nylon wire.

The heat-resistant plate 12 is made of paper, glass or the like, and is adhered to the surface of the edge of the substrate 10. Further, a copper foil 161 is formed on the surface of the heat-resistant plate 12.
A conductive surface layer 16 composed of two layers, a copper plating 162 and a copper plating 162, is provided at regular intervals.
A hole 15 exposing the end face of the conductive wire 13 is formed therethrough. A conductive inner surface layer 17 made of copper plating is provided on the inner surface of the hole 15 so as to be continuous with the conductive surface layer 16.

That is, since the conductive transparent body 1 uses ultrafine element wires as the conductive wires 13 and the electric insulating wires 14 which form the conductive mesh 11, the whole looks like an achromatic or chromatic transparent body. The distance between the adjacent conductive wires 13 and the distance between the adjacent electrically insulating wires 14 are set in consideration of the transparency of the viewer. For example, when the conductive wire 13 and the electrically insulating wire 14 having a diameter of about 0.1 mm are used, it is preferable that the interval between the adjacent conductive wires 13 and the interval between the adjacent electrically insulating wires 14 are roughly set to about 10 mm or more,
When the conductive wire 13 and the electrically insulating wire 14 having a diameter of about 20 μm are used, it is preferable that the distance between the adjacent conductive wires 13 and the distance between the electrically insulating wires 14 are closely set to about 0.5 mm.

The simplest method for producing the conductive transparent body 1 is as shown in FIG. That is, first, as shown in (i), the conductive mesh 11
A copper clad laminate (for example, a laminate of a phenol resin or an epoxy resin, an insulating substrate such as a glass plate, etc., on which a copper foil is stretched,
A) which is used as a material for a printed wiring board is adhered, and then, as shown in (ii), the copper clad laminate A
A hole 15 is provided in which the end face of the conductive wire 13 of the conductive mesh 11 is exposed. In addition, the end surface of the conductive wire 13 is surely provided with the hole 15
In order to be exposed to the
It is better to make it larger than the pitch of 3. Then, as shown in (iii), copper plating B is applied to both the front and back surfaces of the copper clad laminate A and the inner surface of the hole 15. The copper plating B is preferably electroplated after chemical plating. afterwards,
As shown in (iv), the copper plating B and the copper foil of the copper-clad laminate A are corroded by etching except for the inner surface of the hole 15 and the peripheral portion of the hole 15 of the copper-clad laminate A. In this way, the conductive transparent body 1 can be manufactured.

Since the conductive transparent body 1 of the present embodiment is constructed as described above, when the external conductor 2 is soldered to the conductive surface layer 16 as shown in FIG. 5, the external conductor 2 is soldered.
Are electrically connected to the conductive line 13 through the conductive surface layer 16 and the conductive inner surface layer 17.

The heat generated when the external conductor 2 is soldered to the surface layer 16 is absorbed by the heat resistant plate 12 before reaching the base portion 10. Therefore, since it is possible to prevent the base portion 10 from being deformed by the heat of soldering, it is possible to prevent the surface layer 16 and the inner surface layer 17 from peeling or cracking.

That is, in the conductive transparent body 1 of the present embodiment, the external conductive wire 2 can be connected to the conductive wire 13 by soldering so that conduction failure does not occur.
Connection work can be done easily and efficiently.

Although the embodiment of the present invention has been described in detail above with reference to the drawings, the specific structure is not limited to this embodiment, and there are design changes and the like within the scope not departing from the gist of the present invention. Also included in the present invention. For example, in the embodiment, the example in which the hole exposing the end face of the conductive wire is formed penetrating the base portion is shown. Need not penetrate. The diameter of the hole may be such that the end faces of a plurality of conductive wires are exposed or the end faces of a single conductive wire are exposed. It is desirable to set according to the required amount.

[0018]

As described above, in the conductive transparent body of the present invention, the heat applied to the conductive surface layer can be absorbed by the heat-resistant plate before reaching the base portion, so that the conduction failure occurs. The effect is that the external conductor can be connected to the conductor by soldering so that it does not exist.

[Brief description of drawings]

FIG. 1 is a perspective view showing a conductive transparent body of the present embodiment.

FIG. 2 is a sectional view taken along the line II-II in FIG.

FIG. 3 is a plan view showing components of a conductive transparent body.

FIG. 4 is a cross-sectional view showing a method for manufacturing a conductive transparent body.

FIG. 5 is a cross-sectional view showing a state in which an external conductive wire is connected to a conductive transparent body.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Conductive transparent body 10 Base part 12 Heat-resistant plate 13 Conductive wire 15 Hole 16 Conductive surface layer 17 Conductive inner surface layer

Claims (1)

[Claims] 1. A base part made of a transparent electrically insulating material, a plurality of conductive wires embedded in the base part so as not to short-circuit with each other, and a heat-resistant plate adhered to a surface of the base part. A conductive surface layer is provided on the surface of the heat-resistant plate, a hole exposing the end surface of the conductive wire is provided in the conductive surface layer, and the inner surface of the hole is continuous with the conductive surface layer. A conductive transparent body, characterized in that the conductive inner surface layer is provided.