JPH09232018A - Anisotropic conductive rubber connector - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve reliability by minimizing miss alignment of a contact surface on printed circuit boards even when a part between the printed circuit boards is widely opened. SOLUTION: In an anisotropic conductive rubber connector 1, elastic bodies 11 and 12 respectively formed in a necessary thickness from electric contact surfaces 14 and 15 are arranged on its surface and the reverse, and a nonelastic body 13 is arranged in a residual central part, that is, between the elastic bodies 11 and 12. Electric conductors 16 to secure anisoptropic electric conductivity are arranged between the elastic bodies 11 and 12 and the nonelastic body 13 without a cut line. Therefore, contact performance of a connecting pattern arranged on an unillustrated printed circuit board and the anisotropic conductive rubber connector 1 can be secured.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an anisotropic conductive rubber connector, and more particularly to an anisotropic conductive rubber connector having conductivity only in a specific direction by embedding a large number of conductors arranged in a specific direction in silicon rubber. .

[0002]

2. Description of the Related Art Conventionally, in this type of anisotropic conductive rubber connector, as shown in FIG. 4, connection patterns 4 and 5 are provided on the facing surfaces of printed circuit boards 2 and 3, respectively. , 5 are sandwiched between them to electrically connect the printed circuit boards 2 and 3 to each other.

The anisotropic conductive rubber connector 6 has an electrical contact surface 6 electrically connected to the connection patterns 4 and 5, respectively.
1, 62 and a conductor 63 for electrically connecting the electrical contact surfaces 61, 62. That is, the anisotropic conductive rubber connector 6 is configured by embedding a large number of conductors 63 in rubber, and by electrically connecting the electrical contact surfaces 61 and 62 by the conductors 63, The patterns 4 and 5 are electrically connected.

[0004]

In the above-mentioned conventional anisotropic conductive rubber connector, when some kind of pressure is applied to the printed circuit board to cause deformation (diagonal deformation) as shown in FIG. 4, a connection pattern is formed. Although the positional relationship between the front and rear electrical contact surfaces electrically connected to each other is deviated to cause misalignment, this misalignment may cause a short circuit between adjacent patterns.

That is, when the length of the anisotropic conductive rubber connector in the conductive direction is long, the longer the length of the conductive direction is, the more the misalignment of the contact surfaces of both printed boards with respect to the same deformation rate. Therefore, there is a high possibility of causing a short circuit between the connecting patterns of the printed circuit board. Further, the shorter the distance between the connecting patterns on the printed circuit board, the higher the possibility of causing a short circuit.

Therefore, an object of the present invention is to solve the above-mentioned problems and to minimize the misalignment of the contact surface of the printed circuit boards even when the printed circuit boards are widely spaced apart, thereby improving the reliability. An object is to provide an anisotropic conductive rubber connector that can be used.

[0007]

SUMMARY OF THE INVENTION Anisotropic conductive rubber connectors according to the present invention each have a first structure formed on a printed circuit board.
And an anisotropic conductive rubber connector in which a plurality of conductors aligned in a specific direction set in advance for connecting between the second connection patterns are embedded, and having a predetermined thickness set from the front surface and the back surface. A first elastic body and a second elastic body, and a non-elastic body formed between the first and second elastic bodies. The plurality of conductors are embedded in the elastic body.

In another anisotropic conductive rubber connector according to the present invention, in the above structure, each of the plurality of conductors is integrally embedded in each of the first and second elastic bodies and the inelastic body. Made of gold ribbon.

In another anisotropic conductive rubber connector according to the present invention, in the above structure, the first and second elastic bodies are made of silicone rubber, and the inelastic body is made of an inelastic resin agent. .

[0010]

DESCRIPTION OF THE PREFERRED EMBODIMENTS First, the operation of the present invention will be described below.

In the anisotropic conductive rubber connector according to the present invention, elastic bodies are arranged on the contact surface side (front surface and back surface) with the printed circuit board, and a non-elastic body is arranged between these elastic bodies. By this, even if pressure is applied from the contact surface side with the printed circuit board, the deformed part is only the elastic body part,
It is possible to reduce the amount of oblique deformation of the connector itself.

Therefore, even when the printed boards are widely spaced, it is possible to minimize the misalignment of the contact surface of the printed boards and improve the reliability. Further, since the length of the connector itself can be freely selected, it is possible to freely set the distance between the printed circuit boards.

Next, an embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a perspective view including a partial cross section of an embodiment of the present invention. In the figure, an anisotropic conductive rubber connector 1 is provided with elastic bodies 11 and 12 of rubber or the like having a required thickness on the front surface and the back surface thereof, and a resin or the like between the remaining central portions, that is, the elastic bodies 11 and 12. The non-elastic body 13 is arranged.

These elastic bodies 11 and 12 and inelastic body 13
A conductor 16 for ensuring anisotropic conductivity is arranged between the gaps. This ensures the contact between the connection pattern provided on the printed circuit board (not shown) and the electrical contact surfaces 14 and 15 of the anisotropic conductive rubber connector 1.

FIG. 2 is a sectional view of an embodiment of the present invention.
In the figure, an anisotropic conductive rubber connector 1 is provided with connection patterns 4 and 5 provided on opposing surfaces of printed boards 2 and 3, respectively.
The printed boards 2 and 3 are electrically connected to each other by being sandwiched between them. At that time, the electrical contact surfaces 14 and 15 of the anisotropic conductive rubber connector 1 contact the connection patterns 4 and 5, respectively.

In the above structure, the thickness of the elastic members 11, 12 of the anisotropic conductive rubber connector 1 is equal to the electrical contact surface 14,
Since it is formed to have a constant thickness from 15,
Since the amount of deformation of the printed circuit boards 2 and 3 against a constant external force is constant, the misalignment amount A of the electrical contact surfaces 14 and 15 can be limited to a certain value or less.

FIG. 3 is a perspective view including a partial cross section of an embodiment according to an embodiment of the present invention. In the figure, a gold ribbon 1
A specific example in which 6 is applied to an anisotropic conductive rubber using 6 as a conductor is shown.

The anisotropic conductive rubber connector 1 has a length of 14 mm.
The elastic silicone rubbers 11 and 12 are formed with a thickness of 2 mm from the electrical contact surfaces 14 and 15, and the non-elastic body 1 having a thickness of 10 mm is formed in the central portion between the silicone rubbers 11 and 12.
3 are formed. The inelastic body 13 is formed of an inelastic material such as epoxy resin.

When the anisotropic conductive rubber connector 1 is sandwiched between the printed boards 2 and 3, the gold ribbon 16 is applied even if a constant external force is applied to the printed boards 2 and 3.
And the contact pressure between the printed circuit board 2 and 3 is silicon rubber 11,
Due to the elasticity of 12, the contact pressure is the same as that of the conventional anisotropic conductive rubber connector formed of all elastic bodies.

Further, since the non-elastic body 13 has a structure for suppressing the deformation of the anisotropic conductive rubber connector 1 as a whole, the amount of deformation of the printed circuit boards 2 and 3 against a constant external force becomes constant, so that the electrical contact is made. The misalignment amount A of the surfaces 14 and 15 can be limited to a certain value or less.

Further, the gold ribbon 16 is made of silicon rubber 1.
They are integrally embedded between the non-elastic body 13 and the non-elastic body 13 to eliminate the contact point of the gold ribbon 16 in the anisotropic conductive rubber connector 1 and improve the reliability of the conductive characteristics.

In this way, the elastic body 1 is provided on the side (front surface and back surface) of the electrical contact surfaces 14 and 15 with the printed circuit boards 2 and 3, respectively.
By arranging 1 and 12 and arranging the non-elastic body 13 between these elastic bodies 11 and 12, even if pressure is applied from the electric contact surfaces 14 and 15 side with the printed circuit boards 2 and 3, the deformation point is Since only the elastic bodies 11 and 12 are provided, it is possible to reduce the amount of oblique deformation of the connector itself.

Therefore, even when the printed boards 2 and 3 are widely spaced, the misalignment amount A of the electrical contact surfaces 14 and 15 on the printed boards 2 and 3 can be minimized to improve the reliability. Become. Further, since the length of the connector itself can be freely selected, the space between the printed boards 2 and 3 can be freely set.

[0024]

As described above, according to the present invention, a plurality of first and second connection patterns formed on a printed circuit board are arranged in a preset specific direction for connection. In the anisotropic conductive rubber connector in which the electric conductor is embedded, the first and second elastic bodies formed from the front surface and the back surface with predetermined thicknesses respectively, and between the first and second elastic bodies By embedding a plurality of conductors in the non-elastic body formed in each, misalignment of the contact surface on the printed circuit boards can be minimized even when the printed circuit boards are widely spaced, improving reliability. The effect is that it can be done.

[Brief description of drawings]

FIG. 1 is a perspective view including a partial cross section of an embodiment of the present invention.

FIG. 2 is a cross-sectional view of one embodiment of the present invention.

FIG. 3 is a perspective view including a partial cross section of a specific example according to an embodiment of the present invention.

FIG. 4 is a sectional view of a conventional example.

[Explanation of symbols]

 1 Anisotropic Conductive Rubber Connector 2,3 Printed Circuit Board 4,5 Connection Pattern 11,12 Elastic Body (Silicone Rubber) 13 Inelastic Body 14,15 Electrical Contact Surface 16 Conductor (Gold Ribbon)

Claims (3)

[Claims] 1. An anisotropic conductive material in which a plurality of conductors aligned in a preset specific direction for connecting between first and second connection patterns formed on a printed circuit board are embedded. A rubber connector, comprising first and second elastic bodies formed from a front surface and a back surface with a predetermined thickness, respectively, and a non-elastic body formed between the first and second elastic bodies. An anisotropic conductive rubber connector, characterized in that the plurality of conductors are embedded in the first and second elastic bodies and the inelastic body, respectively. 2. The gold conductor according to claim 1, wherein each of the plurality of conductors is a gold ribbon embedded in each of the first and second elastic bodies and the non-elastic body. Directional conductive rubber connector. 3. The anisotropic material according to claim 1, wherein the first and second elastic bodies are made of silicone rubber, and the inelastic body is made of an inelastic resin agent. Conductive rubber connector.