JPH02126578A - elastic connector - Google Patents

Abstract

(57) [Abstract] This bulletin contains application data before electronic filing, so abstract data is not recorded.

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 must be inserted through insulation or insulating film to create a suitable electrical contact, without bending, damaging, or bending the conductor.
It also applies 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. . 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 together, the electrical contacts provide some guarantee of exact alignment of the conductors, with each conductor of the first set
It must be ensured that only the correct corresponding conductor or conductors of the set are contacted. Such alignment is generally achieved 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 less than one-thousandth of the total surface of the metal contact. 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 a change in compression state or a change in temperature (Japanese Patent Application Laid-Open No. 46-6179). 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 that is made of metal and has electrical direction for use in generators, etc.
(Special Publication No. 42-22491).

Another known example is "International Electronics Magazine" pages 3-4, 32-34 (1974
(Published on January 24, 2016).

Further, as prior art, Japanese Patent Application Laid-open No. 50-94495,
There are Japanese Patent Application Laid-open No. 131500/1983.

[Problems to be Solved by the Invention] The invention disclosed in Japanese Patent Application Laid-open No. 46-6179 has a so-called dot type conductive rubber portion, so that it is difficult to take out the electrodes almost perpendicularly from the planar wiring portion of the printed wiring board. has poor volumetric efficiency and requires a large device 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, has no elasticity and cannot be used for printed wiring boards.

Yet another known example is "International Electronics Magazine" pages 3-4, 32-34 (1974
(Published on January 24, 2013) did not use an uncured sheet (and each component was thick, so there was a problem in connecting electrodes with high density and accuracy).

Furthermore, prior art inventions such as JP-A No. 50-94495 and JP-A-50-131500 do not use uncured sheets, and the thickness of each component is thick. There were problems with connecting 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, tightly integrates the interface between the laminates by crosslinking through a curing reaction on at least one side, and To provide an elastic connector that is compact by making the thickness of each layer as thin as possible and has excellent accurate response without electrical malfunction.

[Means to solve the problem] In order to achieve the above object, the present invention consists of 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 The components of the conductive elastomer layer are closely integrated by a cross-linking reaction, and the thickness of each layer is in the range of 0.001 to 0.040 inches. The elastic connector is characterized in that the elastic elastomer layer component has a volume resistivity of 109 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 tightly integrated by a crosslinking reaction of at least one of the components. 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 to 0.0.
In the range of 0.040 inches. 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, and the non-conductive elastomer layer component has a volume resistivity of 10 9 Ω·0 m 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 unit 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. Because the number of layers in any case is usually large compared to the number of conductors, connectors provide self-aligning by allowing electrical contact only between two or more corresponding pairs of connected conductors. conduct. The layers are generally parallel to each other and approximately perpendicular to the surfaces of the conductors they contact. The thicknesses of the layers do not have to be the same, and in some cases it is advantageous to set specific thicknesses for the 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 means that
Also, after contact is made, the conductor surfaces are hermetically sealed, preventing harmful fluids from entering the contact surfaces of the conductors, thereby preventing 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.

Placing metal films, foils, and screens from one side of the connector to the other often improves the collective strength of the structure, but the connector becomes inelastic when compressed between two sets of conductors. 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., uniformity of elastomeric material) can be improved by using the same elastomer for both the conductive and non-conductive layers, with differences in conductivity only being determined by suitable fillers. This can only occur by choosing.

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 determined by the number of conductive layers per unit length of the finished connector element. 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. 0
．． A thin elastomer layer of 0.003 inches or 0.03 inches.
Although it is possible to make laminate connectors with satisfactory performance using thicknesses as thick as 125 inches,
From practical standpoints such as quality, ease of assembly, and economy, in certain situations where the layer is characterized by a thickness of 0.040 inch or less and 0.001 inch or more, - A one-to-one correspondence with the conductors in the set of conductors is desirable.

Laminated strip connectors can be made by any of several methods, but some methods may be preferred over others for reasons of economy of scale, amenability to 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 single 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, near-parallel layers of conductive and non-conductive materials. It is something to do. 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] Embodiments of the present invention will be described below with reference to the drawings.

FIG. 7 shows one embodiment process for obtaining the connector of the present invention. A continuous non-conductive elastomer strip, shown as 60 in FIG. 7, 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. layers 60 and 62
The thickness is preferably 0.010 inch. drum 6
4 rotates clockwise until there are 50 to 100 layers of conductive elastomer and non-conductive elastomer,
Wrapping conductive and non-conductive elastomers. 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 are pressed and cured individually or in a stack to form the block 20 as 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 can be cut into slabs 22 and laminated strips 3 as shown in FIG.
4. Elongated (can be separated).

In the present invention, the "uncured" table indicates 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.
4 alternating layers are glued together to form an integral structure. One or more of the conductive layers 12 may include modifying materials 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 between surfaces 16 and 18 through conductive elastomer layer 12.
, but little conduction occurs through the non-conductive elastomer layer 14.

The individual conductive layers 12 are therefore insulated from each other.

A non-conductive elastomer is an elastomer with a volume resistivity equal to or greater than 109 ohm centimeters. The resistivity of the conductive layer is between 10'4 and 104 ohm centimeters, but problems experienced at higher resistivity values, such as thermal discharge, may require lower resistivity values to alleviate capacitive disturbances. is preferable.

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. Examples of non-conductive silicone elastomers include RTV-615 from General Electric Co. or Compound 4859 from Rodhelm Rice. Typically, silicone rubber without conductive fillers has a volume resistivity of 1014 to 109 ohm centameter and a dielectric strength of approximately 500 volts per mil at 1/8 inch pressure specimens. .

Conductive elastomers with high resistivity values in the order of 10 to 104 ohms are generally obtained by using elastomers filled with carbon powder. An example of a carbon-filled conductive elastomer is Union Carbide's silicon compound -1516.

Obtained by introducing conductive fillers with resistivity values as low as 10-' to 10 ohm centimeters, such as copper, nickel, silver, and metallized fillers, such as silver-coated copper, silver-coated glass. 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 Company)
ic) Product name SE-5211E)
13% 2.5-bis(tert-butylperoxy)-2,
5 dimethylhexane supported on a 50% active inert carrier (R.C. Vanderbilt Co., Ltd. (R, T
, Vanderbill Co. (trade name: VAROX) (VAROX) 0.
0.1% of 1% dicumyl peroxide supported on 40% active precipitated calcium carbonate (
Hercules, Inc. (trade name: Di-Cup4Qc) Silver powder average particle size 0.6-3.0 microns 63.8
%apparent density 8~16gm5/1n3 (Handy & H
armon) Product name SIL POWDER 130 (S I LPOWDER
Silver powder average particle size 3.0-4.0 microns Apparent density 16-19 gm5/1n3 (Metxical C
arp,) Trade name EG200) eta 5% rg Silver flake average particle size 10.0 microns 11.5
%Average particle thickness 1.5 microns Apparent density 20-27gm5/1n3 (Metx Metal
urgcat Corp, )Product nameAg F I
ake6) Other examples of conductive and non-conductive elastomers that can be used in the present invention are U.S. Patent No. 3.140.3.
Specification No. 42, Specification No. 3.412.042, Specification No. 3.609.104, and Specification No. 3.620.8.
It can be seen in the specification of No. 73.

A connector according to the present invention, shown generally as 10 in FIG.
This is obtained by forming one laminated block, shown as 20 in the figure.

The block is sufficiently cured to ensure its physical integrity and 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 create a slab 22.

Slab 22, shown in more detail in FIG. 3, combines a plurality of rods of conductive elastomer 24 and non-conductive elastomer 26. 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 cut perpendicular to rod 24 to form connector IO. 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 lateral and perpendicular lengths of the layers 24 and 26 that make up the connector 10 will be at least several times greater than 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. One example of producing ready-to-cut blocks containing carbon-filled silicone rubber for the conductive layer is as follows. Multiple 2" x 4" x 0.010" non-conductive strips of Rod Helm-Rice silicone compound 4859 catalyzed with 15 Verox by applying pressure for 1 minute at 340°F until partially cured. was manufactured. or 1 at 450°F until partially cured.
Union Carbide's compound catalyzed with 1% Ve+ox by pressurizing for -15 min.
16 2 inch by 4 inch by 0.010 inch conductive strips were produced. A 1/4 inch tall block was made by stacking alternating conductive and non-conductive pieces. A 1 inch high block was made by stacking 4 such blocks. The block was pressure cured at 450°F for 1/2 hour and post cured at 350°F for 4 hours without pressure.

This block was then cut into 2 inch x 1 inch x 0.100 inch slabs. These slabs were then split into 1" x 0.50" x 100" connector elements. The dimensions of each layer in this connector element are 0.010" x 0.05Q" x 0.1
00 inches, and the diagonal length through the center of this layer was approximately 0.112 inches. 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 inches).

1. Fabrication of laminated connectors containing silver-filled silicone rubber
An example is as follows. 2 inches x 4 inches x O, 01
0 inch non-conductive silicone elastomer leaves were fabricated in the same manner as in the previous example. Conductive silicone
The elastomer layer was manufactured according to the recipe shown in Table 1,
Mix and pressurize 2 inches x 4 inches
The uncured layer was made into an inch thick layer. Alternating conductive and non-conductive layers were stacked to create 1/4 inch tall blocks. 4 g of such blocks were stacked to form a block with a height of 1 inch. The block was pressure cured at 450°F for 1/2 hour and post cured at 350°F for 4 hours without pressure. This block was cut as in the previous example into 1 inch x O, 1) 50 x [1,100 inch connector elements.

By introducing a modified material, such as a woven, knitted or felt screen, into or between any of the conductive or non-conductive lobes mentioned above, the physical properties of the resulting connector can be improved. can be modified. Elastomers can be modified to be electrically conductive or non-conductive by introducing dispersed particles of non-elastomeric solids. Additionally, the conductivity of the conductive layer can be increased by electrolytically spraying or vapor depositing metals on 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. connector 34
The number of layers present is several times the number of conductors 36 on the printed wiring board.

Due to the resiliency of the particular elastomer used to fabricate connector 34, shocks and vibrations between device 30 and printed wiring 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. 5 has several laminated connector elements 42 held in a substantially fixed position relative to each other using retaining means 44 and is used in place of the separate leaflet connector 34 of FIG. It is advantageous to do so. The retaining means can be electrically conductive or non-conductive, depending on the particular situation.

A connector, such as 40, is connected to a laminate block 38 of elastomer, such as block 20 in FIG.
It is convenient to manufacture it by inserting it between two laminates 46. 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. The elastomeric laminate block 38 and the opposing 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, similar to rods 24, 26 in FIG.
8, alternately conductive and non-conductive, separated by adjacent elements 54 comprised of laminates 46. One or more of the connectors 40 illustrated in FIG. 5 can be made from a slab 50 by cutting, stamping, punching, or other methods. The waste products of this process can be used to make other laminated connecting elements according to the present invention. Adjacent element 54 of slab 50
serves as a holding means 44 for the connector 40. connector 40
can be considered a slab 50 and has at least one inner edge 56 defining the aperture of the slab.

Another connector according to the present invention is effective for connecting very small and fragile integrated circuit chips or similar electrical circuit elements, and this connector has a conductive structure attached to a 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 comprised of an elastomer that is fully compatible with the elastomer forming slab 22. The body 72 essentially acts as a retaining means 44 to secure the physical relationship between the slabs 22. The body 72 and slab 22 are 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 consists of a central portion 76 having an upper surface 78 and a lower surface 80 joined and articulated by a body 82. 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. Upper surface 78 and 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. Each strip 10 is traversed perpendicularly to the alternating layers by 24 and 26 further forming a strip IO.
The planes of are several times as large as the planes of any 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 conductive and nonconductive cured elastomers. Laminated strip connector (1) The strip described in item (1) above, which uses silicone as the elastomer.

(3) In the strip of item (1) above, the layer thickness is 0.
0.003 to 0.125 inches.

(4) In the strip of item (1) above, the layer thickness is 0.
001 to 0.040 inch.

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

(6) The strip of item (1) above, wherein the layer is substantially perpendicular to the surface of the aforementioned conductor set.

(2) A strip according to item (1) above further containing 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 0.003 to 0.125 inches.

(9) In the laminated piece connector according to item (8) above, the thickness of the layer is 0. QO of 1 to 0.040 inch.

(2) A laminate strip connector according to item (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 conductive material sheet and a non-conductive material sheet,
In the step (A), one of the pieces is hardened and the other is uncured, and the pieces are combined alternately in parallel and continuously wound, and then the wound piece is cut into a single block structure. 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 casting alternating sheets of non-conductive and conductive elastomer onto the previously formed sheet;・Completely harden the stack of sheets to form a single block structure.

(2) A method in which molding is performed instead of casting in item (1) of the manufacturing method.

(3) Process (A) includes the following process. 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 laminate connector for connecting at least two sets of spaced apart electrical conductors having a plurality of elements, each element comprised of substantially parallel alternating layers of conductive and nonconductive cured elastomers. What is the strip consisting of.

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

(8) The laminate connector of paragraph 1 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 defining an aperture, in which an elongated element of conductive material and a non-conductive consisting of a combination of elongated elements of conductive material.

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

[Effects of the Invention] The present invention consists of alternately laminating conductive elastomer layers and non-conductive elastomer layers, and the boundary portion between both layers is tightly integrated by 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 this 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 1426.60... Non-conductive elastomer 12, 24.62... Conductive elastomer 20... ...Block 225f
1 ... Slavic circular map

Claims (1)

[Claims] (1) An elastic connector in which a conductive elastomer layer component and a non-conductive elastomer layer component are alternately laminated, wherein the boundary between the conductive elastomer layer component and the non-conductive elastomer layer component is at least one of the components. The cross-linking reaction results in a close integration, and the thickness of each layer is 0.00
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 has a volume resistivity of 10^.
An elastic connector characterized by a resistance of 9Ω・cm or more.