JPH0334194B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an elastic connector (rubber connector) used for connecting electrical wiring of a printed circuit board of a liquid crystal display. More specifically, the present invention relates to a laminate connector comprising a non-conductive elastomer layer and a conductive elastomer layer, the conductive elastomer layer being an electrical contact. In particular, the present invention relates to an elastomer laminated structure used to electrically connect two or more sets of conductors that are placed close to each other in a one-to-one relationship, and each set of conductors is closely spaced. It consists of multiple conductors fixedly arranged.

[Prior Art] Conventional connectors for electrically connecting two or more sets of electrical conductors, such as tape-type cable connectors, insert-type printed wiring board connectors, integrated circuit connectors, liquid crystal display device connectors, etc. , containing complex assemblies with intricate metal contacts to form electrical circuits. Some connectors contain sharp-edged contacts that are inserted through insulation or insulating film, bending or bending the conductor to make a suitable electrical contact.
Injury or stress.

Most conventional features feature complex electrical contacts in the form of ramps, rings, fingers, etc. made of resilient metallic materials that retain engagement with the conductor by elastically flexing. It is. This type of electrical contact is typically expensive to manufacture and difficult to incorporate into a connector. However, such contacts are generally difficult to manufacture reproducibly, occupy an undesirable volume when manufactured, and are susceptible to fatigue during continuous use.

When two or more sets of very small conductors arranged closely together are connected to each other,
Electrical contacts ensure some degree of precise alignment of conductors,
Each conductor of the first set must contact only the correct corresponding conductor or conductors of the second set. Such alignment is generally accomplished by spaced holes in the connector containing corresponding contacts. When large numbers of contacts are arranged in this manner, or when contacts are repeatedly opened and closed, misalignments, wear, bends, shorts, and other circuit failures commonly occur. Also, this type of permanent or semi-permanent electrical connection is undesirable or impossible. Metal-to-metal contacts undergo surface friction due to the sliding action of the initial contact and eventually corrode, increasing contact resistance. The actual contact area of a metal-to-metal contact is typically 1000% of the total surface of the metal contact.
It is less than one-fold. If moisture and harmful atmospheres are allowed to enter, they will migrate between the contact surfaces and rapidly degrade the quality of the electrical bond.

As a prior art related to the present invention, there is an elastic connector that can conduct electrically in response to changes in compression state or temperature changes (Japanese Patent Laid-Open No. 46-6179
Publication No.). However, since the conductive rubber part of this invention is of a so-called dot type, the volumetric efficiency is poor in taking out the electrode almost perpendicularly from the planar wiring part of the printed wiring board, and a large one is inevitably required to flow the same current. , it was unsuitable for compactness and high density. Furthermore, it is not easy to manufacture, and in addition, conduction cannot be achieved unless it is compressed to a high degree, so it has the problem that accurate response cannot be ensured.

Another known example is a connector made of a metal material and having electrical directionality for use in generators and the like (Japanese Patent Publication No. 42-22491).

Another known example is "International Electronics Magazine" pages 3-4, 32-34.
page (published January 24, 1974).

Furthermore, as prior art, Japanese Patent Application Laid-Open No. 50-94495,
There are Japanese Patent Application Laid-open No. 50-131500, etc.

[Problems to be Solved by the Invention] The invention of Japanese Patent Application Laid-open No. 46-6179 mentioned above has problems because the conductive rubber portion is of a so-called dot type.
Taking out electrodes almost perpendicularly from the planar wiring part of a printed wiring board has poor volumetric efficiency, and a large electrode is required to pass the same current, making it unsuitable for compactness and high density. Furthermore, it is not easy to manufacture, and in addition, conduction cannot be achieved unless it is compressed to a high degree, so it has the problem that accurate response cannot be ensured.

Another known example, the invention of Japanese Patent Publication No. 42-22491, had no elasticity and could not be used for printed wiring boards.

Yet another known example is "International Electronics Magazine" pages 3-4, 32-34.
Page (published January 24, 1974) did not use an uncured sheet, and each component was thick, so there were problems in connecting electrodes with high density and accuracy. Ta.

Furthermore, the prior art inventions such as JP-A-50-94495 and JP-A-50-131500 do not use uncured sheets and each component is thick, so they are expensive. There were problems in connecting the electrodes densely and accurately.

In order to improve the problems of the prior art, the present invention alternately laminates conductive elastomer layers and non-conductive elastomer layers, and integrates the interface between the laminates by crosslinking by a curing reaction of at least one of the elastomer layers. Moreover, the thickness of each layer is made as thin as possible to achieve compactness, and to provide an elastic connector that is free from electrical malfunction and has excellent accurate response.

[Means for Solving the Problems] In order to achieve the above object, the present invention has the following configuration.

That is, the present invention provides an elastic connector in which conductive elastomer layer components and non-conductive elastomer layer components are alternately laminated, wherein the boundary portion between the conductive elastomer layer component and the non-conductive elastomer layer component is at least The cross-linking reaction of one component results in a close integration, with each layer having a thickness of 0.001~
0.040 inch, the conductive elastomer layer component is conductive with a volume resistivity of 10 4 Ω・cm or less, and the non-conductive elastomer layer component is conductive with a volume resistivity of 10 ⁴ Ω・cm or less.
It is an elastic connector characterized by a resistance of 10 ⁹ Ω・cm or more.

In the present invention, the boundary portion between the conductive elastomer layer component and the non-conductive elastomer layer component is
They are tightly integrated by a crosslinking reaction of at least one component. As a result, it is possible to achieve strong adhesion and integration without using adhesives or the like, and without including air at the interface, allowing for high density conductive components and a highly reliable connector. can.

Next, in the present invention, the thickness of each layer is 0.001~
In the 0.040 inch range. This is for higher density.

Next, in the present invention, the conductive elastomer layer component is conductive with a volume resistivity of 10 ⁴ Ω·cm or less,
Non-conductive elastomer layer component has low volume resistivity 10 ⁹
It is Ω・cm or more. This is to ensure that only the conductive portion is sufficiently energized and to exhibit sufficient connector performance.

[Function] In the present invention, the number of layers per length of the connector piece is such that at least one conductive layer and a plurality of conductive and non-conductive layers cover each conductor and all pairs of adjacent conductors. are selected so as to touch each space in between. Since the number of layers in any case is usually large compared to the number of conductors, connectors are self-aligning by allowing electrical contact only between two or more corresponding pairs of connected conductors. perform an action. The layers are approximately parallel to each other;
Almost perpendicular to the surface of the conductor in contact. The thickness of the layers does not have to be the same, in some cases
It is advantageous to set specific thicknesses for the electrically conductive and/or non-conductive layers.

The elastic nature of the elastomer used guarantees an excellent electrical connection to the conductor, since it deforms elastically in response to external forces generated to insert the conductor. This provides vibration absorption and cushioning effects not available with undamped flexible metal connectors. This damped and flexibly supported conductor surface also ensures that the conductor surface is hermetically sealed after contact has been made, preventing harmful fluids from entering the contact surface of the conductor. This prevents corrosion.

The connectors of the present invention can be easily mass-produced over a wide range of contact resistance, hardness, layer thickness, and other mechanical and electrical properties. Because each layer is uniquely thin, it is possible to arrange conductors at a higher density at the connection points than in the past. The connector piece can be repeatedly bent and compressed without losing its mechanical strength or conductivity.

Elastomers which may be satisfactorily used include butadiene-styrene, butadiene-acrylonitrile and butadiene-isobutylene copolymers, as well as chloroprene polymers, polysulfide polymers, plasticized vinyl chloride and vinyl acetate polymers and copolymers, There are polyurethanes and silicone rubbers. Silicone rubbers are usually dimethyl, methyl-phenyl, methyl-
There are halogenated siloxanes mixed with fillers such as vinyl or silica to give suitable rheological properties, and vulcanized or cured with perotides or metal salts. Silicone rubber is generally preferred because of its aging properties and retention of physical properties at extreme temperatures. That is, silicone resin is preferable because it has excellent durability and price stability. The elastomer used must be stable in shape. In other words, it must not undergo excessive deformation due to its own weight or undergo plastic deformation after hardening.

Spreading metal films, foils, and screens from one side of the connector to the other often improves the collective strength of the structure, but when the connector is compressed between two sets of conductors it becomes inelastic. It tends to wrinkle and prevent the connector from resiliently recovering when released. Therefore, it is desirable that the connector be constructed solely of alternating layers of electrically conductive and non-conductive elastomeric resin. Integrity (i.e., unity of elastomeric material) by using the same elastomer for both the conductive and non-conductive layers
The difference in conductivity can only be achieved by choosing the appropriate filler.

Layer thicknesses can vary to a large extent depending on the individual requirements of a particular situation, but for optimal design, layer thicknesses should be as large as possible to provide the number of conductive layers per unit length of the finished connector element. As the thickness increases, the thickness must be selected to avoid poor electrical effects due to the close proximity of adjacent conductive layers under the intended conditions of use. Although it is possible to make laminate strip connectors with satisfactory performance using elastomer layers as thin as 0.0003 inch or as thick as 0.125 inch, practical considerations such as quality, ease of assembly, and economics From this perspective, the layer needs to be no more than 0.040 inch thick and no less than 0.001 inch thick. In certain circumstances,
A one-to-one correspondence between the conductive layers of the connector and the conductors in the set of conductors is desirable.

Laminated strip connectors can be made by any of several methods, but economies of scale,
Certain methods may be preferred over others for reasons of compatibility with automation, uniformity, and quality control. Generally, a sheet of non-conductive elastomer is sprayed, cast, molded, extruded or rolled, and partially or fully cured.
A sheet of electrically conductive elastomer is sprayed, cast, placed in a mold, extruded or rolled separately and, with the addition of the necessary binder, placed on top of the elastomer described above. Other methods of assembling the conductive layer include spraying, vacuum deposition, or electrolytic plating of the metal onto a preformed nonconductive plate. The process of placing a conductive plate on top of a non-conductive plate is repeated many times to stack the plates to an appropriate height to form a block.
Other plates of modified material may also be included in this block forming process. The board block is then post-cured to bind all boards together. This block is then cut approximately perpendicular to the plate to obtain slabs containing alternating conductive and non-conductive layers. These slabs are then further divided or combined if necessary depending on the individual circumstances.

In its broadest sense, the invention encompasses a means for connecting several sets of spaced electrical conductors consisting of an integral combination of repeated, generally parallel layers of conductive and non-conductive materials. It is something. Particular features and advantages of the invention will become apparent from the following description, taken in conjunction with the foregoing summary, accompanying drawings, and claims.

[Example] Hereinafter, an example of the present invention will be described with reference to the drawings.

FIG. 7 shows one embodiment process for obtaining the connector of the present invention. 6 in Figure 7
A continuous non-conductive elastomer strip, shown as 0, is used as a base or substrate from which the electrically conductive elastomer 62 can be extruded or calendered as a continuous layer. Successive layers of conductive elastomer 62 along with continuous non-conductive elastomer 60 are then wrapped around a drum 64, preferably octagonal or similarly shaped. The drum 64 has standard 10 inch side edges 66. The thickness of layers 60 and 62 is preferably 0.010
Inches. The drum 64 has 50 to 10 layers of conductive elastomer and non-conductive elastomer.
Wrap the conductive and non-conductive elastomers by rotating clockwise until 0 layers are reached. The drum 64 is then stopped and the multiple layers 68 formed on each side 66 are removed from the drum 64 by cutting along lines 70. The multiple layers 68, either individually or in a stack, are pressed and cured to form the block 20 shown in FIG.
The book 20 shown in FIG. 2 may be cut out from the roll shown in FIG. 7, or may be made by laminating rectangular rubber sheet-like materials. This block is slab 22
It can be cut into strips and cut into strips 34, which are laminated as shown in FIG.

In the present invention, "uncured" means at least not completely cured. In other words, it indicates a completely uncured or semi-cured state. This is because if it can be cured by applying pressure, the effect is the same in that it can be tightly integrated.

The laminate cut out from the rolled up laminate sheet in FIG. 7 will be described below.

As shown in FIG. 1, the laminated piece connector 10 is
Alternating layers of conductive elastomer resin 12 and non-conductive elastomer resin 14 are bonded together to form an integral structure. One or more of the conductive layers 12 may include a modifying material 13. Surfaces 16 and 18 are suitable for contacting several sets of closely spaced conductors (not shown) to electrically connect the conductors. Electrical conduction is conducted through the conductive elastomer layer 12 at the surface 16.
and 18, but little conduction occurs through the non-conductive elastomer layer 14. Therefore the individual conductive layers 12
are insulated from each other.

A non-conductive elastomer has a volume resistivity of 10 ⁹
An elastomer with a diameter equal to or greater than an ohm centimeter. The resistivity of the conductive layer is 10 ^-4 ~
¹⁰⁴ ohm centimeters, although lower resistivity values are preferred to alleviate problems experienced at higher resistivity values, such as thermal discharge capacitive disturbances.

A preferred elastomer for use as a conductive layer or as a non-conductive layer is silicone rubber, to which fillers can be added to improve its handling properties. An example of a non-conductive silicone elastomer is General Electric's RTV.
−615 or Rodhelm Rice's compound 4859
There is. Typically, silicone rubber without conductive fillers has a volume resistivity of 10 ¹⁴ to 10 ⁹ ohm centimeter and approximately 1/8 inch pressure sample.
It has an insulation strength of 500 volts per mil.

Conductive elastomers with high resistivity values on the order of ^10-104 ohm centimeters are generally obtained by using elastomers filled with carbon powder. An example of a carbon-filled conductive elastomer is Union Carbide's silicone compound K-1516.

By introducing conductive fillers with resistivity values as low as 10 ^-4 to 10 ohm cm, such as copper, nickel, silver, and metallized fillers, such as silver-coated copper, silver-coated glass. It will be done. Metal-filled elastomers can also contain carbon to improve physical properties such as compressive strain and strength. Examples of metal-filled conductive elastomers include:

Table 1 Material Weight Silicone Rubber Compound Methyl Phenyl Vinyl Siloxane Rubber (General Electric)
Product name SE-5111E) 13% 2,5-bis(tertiary butylperoxy)-2,
5-dimethylhexane supported on an inert carrier with 50% activity (RTVanderbilt CO (trade name: Barososc))
(VAROX) 0.1% dicumyl peroxide supported on 40% active precipitated calcium carbonate (Hercules Inc. trade name Di-Cup40C) 0.1% Silver powder average molecular diameter 0.6-3.0 microns 63.8% Apparent Density 8~16gms/in ³ (Handy End Hulman Co., Ltd.)
Haromo) Product name SILPOWDER 130) Silver powder average molecular diameter 3.0-4.0 microns 11.5% Apparent density 16-19 gms/in ³ (Metz Metallurg
ical Corp.) Product name EG 200) Silver flake average molecular diameter 10.0 microns 11.5% Average molecular thickness 1.5 microns Apparent density 20-27 gms/in ³ (Metz Metallurg
Other examples of conductive and non-conductive elastomers that can be used in the present invention are U.S. Pat. No. 3,140,342, U.S. Pat. Seen in specification No. 3620873.

A connector according to the present invention, shown generally at 10 in FIG. obtained by forming a single laminated block. The block is sufficiently cured to ensure its physical integrity and to prevent separation of the laminates during subsequent manufacturing steps or during use. The cured block 20 is then cut perpendicular to the plane of each leaf forming the block to produce a slab 22.

Slab 22, shown in more detail in FIG. 3, includes a conductive elastomer 24 and a nonconductive elastomer 2.
It is a combination of multiple rods of 6. The conductive elastomer rod 24 is not only conductive through the thickness of the slab 22, but also conductive along the length of the rod 24. Slab 22 is then
The connector 10 is cut perpendicularly to the rod 24.
is formed. Connector 10 can be used alone or in combination with other similar connectors to form a laminate connector according to the present invention.

Generally, the layers 24 and 2 that make up the connector 10
The length L perpendicular to the lateral direction 6 is at least several times as large as the maximum length of any one layer.

Several methods can be used to assemble the sheets of conductive and non-conductive material into a block. Producing ready-to-cut blocks containing carbon-filled silicone rubber for conductive layer 1
An example is as follows. 340 until partially cured
2 inches x 4 inches
Multiple 0.010 inch non-conductive strips were manufactured.
Also conductive strips, 2 inches by 4 inches by 0.010 inches, of Union Carbide's compound K-1516 catalyzed with 1% Verox by pressing at 450° for 1 minute until partially cured. was manufactured. A 1/4 inch tall block was made by stacking alternating conductive and non-conductive pieces. Four such blocks were stacked one on top of the other to create a one inch high block. This block is 450〓
It was cured by applying pressure for half an hour at 350°C, and then post-cured for 4 hours without applying pressure at 350°C.

Next, make this block 2 inches x 1 inch x
Cut into 0.100 inch slabs. Then divide these slabs into 1 inch x 0.50 inch x 0.100
inch connector element. The external dimensions of each layer in this connector element are 0.010 inches x 0.050
inch x 0.100 inch, and the diagonal length through the center of this layer was approximately 0.112 inch. The length of the element perpendicular to the layers forming it (1 inch) is therefore at least several times the longest dimension of all the layers (0.112 inch).

One example of laminated connector fabrication containing silver-filled silicone rubber is as follows. Non-conductive silicone elastomer leaflets measuring 2 inches by 4 inches by 0.010 inches were fabricated in the same manner as described above. The conductive silicone elastomer layer was prepared according to the formulation shown in Table 1, mixed and pressed into an uncured layer measuring 2 inches by 4 inches by 0.010 inches. Alternating conductive and non-conductive layers were stacked to create 1/4 inch tall blocks. Four such blocks were stacked to form a 1 inch high block. This block was cured under pressure at 450° for half an hour, and then post-cured at 350° for 4 hours without applying pressure. This block was cut into 1 inch x 0.050 x 0.100 inch connector elements as in the previous example.

such as woven fabrics, knits, felt screens,
Modifying materials can be introduced into or inserted between the conductive or non-conductive lobes described above to modify the physical properties of the finished connector. Elastomers can be modified to be electrically conductive or non-conductive by incorporating dispersed particles of non-elastomeric solids. Furthermore, the conductivity of the conductive layer can be improved by electrolytically spraying or vapor depositing metal onto certain surfaces of the leaves that make up the assembled block.

As illustrated in FIG. 4, a device 30, such as a liquid crystal display device, can be electrically connected to a printed wiring board 32 by a laminate connector 34. on the printed wiring board 30.
Each of the electrical conductors 36 is positioned to generally correspond to a conductor on the display device 30. The conductive layers of connector 34 allow electrical current to flow between corresponding conductors. The non-conductive layer prevents current from flowing to non-corresponding conductors. The number of layers present in connector 34 is several times the number of conductors 36 on the printed wiring board.

Due to the resiliency of the particular elastomer used to fabricate the connector 34, shocks and vibrations between the device 30 and the printed dashed board 32 are softened and absorbed. The smooth, pliable surface of connector 34 seals to the surface of conductor 36 after contact to prevent contact corrosion.

The connector 40 shown in FIG.
Holding each other in a generally fixed position, they may advantageously be used in place of the separate leaflet connectors 34 of FIG. The retaining means can be electrically conductive or non-conductive, depending on the particular situation.

Connectors such as 40 are connected to block 2 in Figure 2.
It is conveniently fabricated by inserting an elastomeric laminate block 38, such as 0, between the secondary laminates 46 shown in FIG. The two laminates 46 can be made of any material and can be multilayered, but for maximum strength they should be fully compatible with the elastomers used to construct the individual block layers 38. It is better to make it with a single layer of elastomer. Elastomer laminated block 3
8 and the oppositely adjacent laminate 46 are cured or vulcanized together to form a single block 48 for cutting the slab 50.

Slab 50 is comprised of elongated elements 52,
This element is similar to bars 24, 26 in FIG. . One or more of the connectors 40 illustrated in FIG.
It can be made from scratch by cutting, stamping, punching, or other methods. The waste products of this process can be used to make other laminated connecting elements in accordance with the present invention. Adjacent element 54 of slab 50 provides retention means 44 for connector 40. Connector 40 can be thought of as a slab 50 and has at least one inner edge 56 defining the hole in the slab.

Another connector in accordance with the present invention is effective for connecting very small and fragile integrated circuit chips or similar electrical circuit elements, this connector having a conductive structure attached to the body 72 as shown in FIG. It can be made by bonding one or more slabs 22 of elongated elements of alternating conductive and non-conductive elastomers 24 and 26. Body 72 is slab 22
It is made of an elastomer that is fully compatible with the elastomer forming the elastomer. The body 72 essentially acts as a retaining means 44 to secure the physical relationship between the slabs 22. Body 72 and slab 2
2 is cut in a plane in which the layers of conductive elastomer 24 and non-conductive elastomer 26 are substantially perpendicular to create the connector 74 shown in FIG.

Connector 74 is joined by a body 82 and consists of a central portion 76 having an articulated upper surface 78 and lower surface 80. Each strip of the plurality of strips 10 fixed to the body is comprised of alternating layers of electrically conductive elastomer and electrically non-conductive elastomer, each layer having an upper surface 78 and a lower surface. 80 and is flush with the upper surface 78 and the lower surface 80 .
The central portion 76 can be made rectangular, circular, or any other convenient desired shape. The central portion 76 acts as a retaining means 44 to secure the physical relationship between the two strips 10. The upper surface 78 and the lower surface 80, which are generally parallel to each other, can be angled relative to the other under certain circumstances. Generally, the portion of the body 82 is smaller than the portion of the top or bottom surface. Furthermore, the plane of each strip 10 which is perpendicularly traversed by the alternating layers 24 and 26 forming the strip 10 is several times as large as the plane of either of the alternating layers forming the strip.

Thus, in general, connectors according to the present invention are formed from at least one laminated connector element having alternating generally parallel layers of electrically conductive and non-conductive elastomeric materials bonded together. .

The connector according to the invention can have a plurality of laminated connector elements and advantageously includes means for holding one or more of the connector elements in a substantially fixed position relative to the immediate surrounding environment. I can do it.

Embodiments of the present invention will be described below.

(1) A laminate connector for electrically connecting at least two sets of spaced apart electrical conductors, consisting of two strips of substantially parallel alternating layers of electrically conductive and nonconductive cured elastomers. laminate connector.

(2) The strip described in item (1) above, which uses silicone as the elastomer.

(3) In the strip described in paragraph (1) above, the thickness of the layer is
Those that are 0.003 to 0.125 inches.

(4) In the strip described in paragraph (1) above, the thickness of the layer is
Those that are 0.001 to 0.040 inches.

(5) A strip according to paragraph (1) above, in which the number of layers in the strip is greater than the number of conductors in any set of conductors.

(6) A strip according to paragraph (1) above, in which the layer is substantially perpendicular to the surface of the conductor set.

(7) A strip according to paragraph (1) above, which further contains at least one layer of modifying material.

(8) A laminate connector for electrically connecting several sets of spaced electrical conductors consisting of alternating layers of conductive and nonconductive cured elastomers, the thickness of said layers being Those that are 0.003 to 0.125 inches.

(9) The laminated piece connector according to item (8) above, wherein the layer thickness is 0.001 to 0.040 inches.

(10) A laminated strip connector according to paragraph (8) above, in which the layers are substantially perpendicular to the longitudinal surface of the strip.

Next, various aspects of the method for manufacturing the laminate connector according to the present invention will be listed.

(1) Using a sheet of conductive material and a sheet of non-conductive material, one of which is cured and the other uncured, they are combined alternately in parallel and wound continuously, and then the wound material is cut by cutting. In step A of forming one block structure, the step includes the following steps.

1) casting a partially cured sheet of non-conductive elastomer; 2) casting a partially cured sheet of conductive elastomer over the sheet formed in step 1); 3) 4) forming a laminate containing the desired number of elastomer sheets by sequentially and alternately casting sheets of non-conductive and conductive elastomer onto the previously formed sheet; and 4) the elastomer.・Completely harden the stack of sheets to form a single block structure.

(2) Those in which molding is performed instead of casting in paragraph (1) of the manufacturing method above.

(3) Process A includes the following steps. That is, an incompletely cured elastomer is inserted into a cured layer of elastomer to create a stack of alternately cured and uncured elastomer layers, and these stacks are cured to form a single block structure. shall be.

(4) In the method of item (3) above, the cured layer of the elastomer is non-conductive, and the incompletely cured elastomer is post-cured to become conductive.

(5) A modified layer is periodically introduced into the block.

(6) A connector for connecting at least two sets of spaced apart electrical conductors having a plurality of elements, each element comprising a strip of substantially parallel alternating layers of conductive and nonconductive cured elastomers. something that is.

(7) The laminate connector of paragraph (6) above, further comprising means for holding at least two of the aforementioned elements in a substantially fixed position relative to each other.

(8) The laminate connector of paragraph (7) above, wherein said means is an elastomer cured to said at least two elements.

(9) A laminate connector for connecting at least two sets of spaced apart electrical conductors, comprising a slab having at least one inner edge forming an aperture, in which an elongated element of conductive material and a non-conductive consisting of a combination of elongated elements of conductive material.

(10) A laminate connector for connecting at least two sets of spaced apart electrical conductors, the connector having at least one element, each element comprising a conductive, nonconductive, cured silicone Consisting of alternating approximately parallel layers of elastomer, the conductive silicone elastomer layer containing silver powder and silver flakes.

[Effects of the Invention] The present invention is characterized in that conductive elastomer layers and non-conductive elastomer layers are alternately laminated, the boundary portion between both layers is tightly integrated through a crosslinking reaction of at least one component, and the thickness of each layer is By making the connector as thin as possible, we were able to create a compact and high-density connector that is free from electrical malfunctions and has excellent responsiveness. In particular, the present invention has the remarkable effect of providing an elastic connector that can be usefully used for electrical connection of high-density printed wiring boards required for recent liquid crystal displays and the like.

[Brief explanation of drawings]

FIG. 1 is a cross-sectional view of one laminate connector according to the present invention. FIG. 2 is a perspective view of a block produced in making a connector according to the invention and a cut slab formed from the block. 3 is a detailed enlarged perspective view of the slab of FIG. 2 and the connector element cut from the slab; FIG. FIG. 4 is a cutaway perspective view of an electrical device connected to a printed circuit by a connector according to the invention. FIG. 5 is an elevational view of a connector according to the invention with retaining means formed of oppositely adjacent laminae. FIG. 6 is a perspective view of a block according to the invention with oppositely adjacent laminae and a slab cut from the block. FIG. 7 is a diagram showing one embodiment of the present invention, and is a schematic diagram showing a method of forming blocks. FIG. 8 is a perspective view of a body with a plurality of slabs of longitudinally extending elements connected to the body. FIG. 9 is a perspective view of the connector separated from the body shown in FIG. 8 according to the present invention. 10, 34, 40, 74...Laminated piece connector,
14,26,60...Non-conductive elastomer, 1
2,24,62...Electroconductive elastomer, 20...
Block, 22, 50...Slab.

Claims (1)

[Claims] 1. An elastic connector in which conductive elastomer layer components and non-conductive elastomer layer components are alternately laminated, where the boundary portion between the conductive elastomer layer component and the non-conductive elastomer layer component is
The conductive elastomer layer components are closely integrated by a cross-linking reaction, and each layer has a thickness in the range of 0.001 to 0.040 inches, and the conductive elastomer layer component has a volume resistivity.
An elastic connector characterized by having an electrical conductivity of 10 ⁴ Ω·cm or less and a non-conductive elastomer layer component having a volume resistivity of 10 ⁹ Ω·cm or more.