Membrane circuit

Abstract

The utility model relates to a diaphragm circuit, which comprises a diaphragm, carbon paste area point positions and silver paste leads are arranged on the front surface of the diaphragm, a connecting part is arranged on one side edge of the diaphragm, the carbon paste area point positions are distributed on the diaphragm, the carbon paste area point positions are connected with the silver paste leads in a one-to-one correspondence manner, and each silver paste lead is provided with a joint strip at the connecting part. And the joint strips are arranged in parallel. A silver-carbon combined circuit in which carbon paste area point positions and silver paste wires are combined is adopted, the area of the carbon paste area point positions is relatively large, the resistance is relatively small, the silver paste wires are in a line shape, the resistance of a silver paste material is relatively small, and the combination enables the resistance of the whole circuit from the carbon paste area point positions to a joint strip to be relatively small, so that the special requirements are met, and the conductive effect is not poor; and compared with all silver paste materials, the cost is lower.

Description

Technical Field

[0001] The utility model relates to a diaphragm circuit. Background Art

[0002] There are many applications for diaphragm circuits. For example, they can be used for touch-type diaphragm circuits. They are set in devices, such as learning machines, and corresponding graphic cards are placed. After the graphic cards are placed, touching the area of ​​the corresponding graphic cards can trigger the points on the diaphragm circuit below, so that the device (such as the learning machine) can be controlled. This type of diaphragm circuit (such as a touch-type diaphragm circuit) has strict requirements on the resistance in its circuit. Generally, the resistance between the point and the connector strip needs to be controlled within a certain range; therefore, if carbon paste is used to set the circuit, the resistance requirements cannot be met, and if silver paste is used to set the circuit, the cost is higher. Utility Model Content

[0003] In view of the technical problems existing in the background technology, the technical problem solved by the present invention is to provide a diaphragm circuit with relatively low resistance and relatively low cost.

[0004] In order to solve the above technical problems, the utility model adopts the following technical solutions: a diaphragm circuit, including a diaphragm, characterized in that: carbon paste area points and silver paste wires are arranged on the front side of the diaphragm, one side of the diaphragm is set as a connecting part, the carbon paste area points are distributed on the diaphragm, the carbon paste area points are connected to the silver paste wires one by one, and each silver paste wire is set as a connector strip at the connecting part, and the connector strips are arranged parallel to each other.

[0005] The following various optimizations or supplementary explanations can be made on the above technical solutions respectively.

[0006] For example, a carbon paste line is also provided on the diaphragm, and the carbon paste line is superimposed on the outer side of the connector strip portion of the silver paste conductor.

[0007] Among them, the points in the carbon paste area correspond to the touch matching area.

[0008] For example, the connecting portion is protrudingly arranged on the opposite side of the diaphragm.

[0009] In addition, the outer side of the silver paste wire is also provided with an isolation insulation protective layer.

[0010] For example, when the isolation insulating protective layer is at the overlapped position of the carbon paste area point and the silver paste wire, the isolation insulating protective layer is located outside the carbon paste area point and corresponds to the silver paste wire.

[0011] For example, when the carbon paste area point is connected to the silver paste wire, there is an overlap, and the carbon paste area point is located outside the silver paste wire.

[0012] In addition, an assembly positioning hole is provided on the diaphragm.

[0013] Furthermore, the assembly positioning holes are arranged at positions of the coupling portion and / or the non-coupling portion of the diaphragm.

[0014] It can also be optimized that the front side of the membrane is further provided with adhesive points, and the membrane is also provided with a release film or release paper, and the release film or release paper is connected to the outside of the adhesive points.

[0015] The beneficial effect of the utility model is that in the diaphragm circuit, a silver-carbon combination circuit combining carbon paste area points and silver paste wires is adopted, the carbon paste area points are relatively large in area and small in resistance, the silver paste wires are in the shape of lines, and the silver paste material has relatively small resistance. The combination makes the resistance of the entire circuit from the carbon paste area points to the connector strip relatively small to meet special needs, the conductive effect is not bad, and the cost is lower than that of using all silver paste materials. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The following describes the relevant details and working principles of the implementation methods and embodiments of the present utility model in conjunction with the accompanying drawings.

[0017] Figure 1 It is a structural schematic diagram of the utility model.

[0018] In the figure: 1. Diaphragm; 2. Carbon paste area points; 3. Silver paste wire; 4. Connection part; 5. Connector strip; 6. Isolation insulation protective layer; 7. Assembly positioning hole; 8. Adhesive point; 9. Circuit board; 10. Gold finger; 11. Carbon paste line. DETAILED DESCRIPTION

[0019] The technical solutions in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model; it is obvious that the described embodiments are only part of the embodiments of the implementation of the utility model, rather than all of the embodiments, and all other embodiments obtained by ordinary technicians in this field without making creative work based on the embodiments of the utility model are within the scope of protection of the utility model.

[0020] Referring to the accompanying drawings, in an embodiment of the present embodiment, a diaphragm circuit includes a diaphragm 1, and a carbon paste area point 2 and a silver paste conductor 3 are arranged on the front of the diaphragm 1. The carbon paste area point 2 can be set to a square or circular area range of carbon paste. For example, the carbon paste area point 2 corresponds to the touch area, such as the graphic touch position of the graphic card in the touch-type learning machine, which corresponds to the carbon paste area point 2. The carbon paste area point 2 will be used as the touch matching area. One side of the diaphragm 1 (such as the lower side or the upper side or the left side or the right side) is set as a connecting portion 4, and the connecting portion 4 is used to cooperate with the gold finger 10 area connected to the circuit board. The carbon paste area points 2 are distributed on the diaphragm 1 (the position can be set according to the requirements), the carbon paste area points 2 are connected to the silver paste wires 3 one by one, and each silver paste wire 3 is set as a connector strip 5 at the connection part 4. The carbon paste area points 2 are relatively large in area and small in resistance. The silver paste wires 3 are in the shape of lines, and the resistance of the silver paste material is relatively small. The combination makes the resistance of the entire line from the carbon paste area point 2 to the connector strip 5 relatively small to meet special needs, such as the needs of touch-type diaphragm circuits. In addition, the combination of carbon paste area points 2 and silver paste wires 3 has low cost and meets the conductivity requirements. Among them, the connector strips 5 are arranged in parallel with each other, and the connector strips 5 will be used to connect the gold fingers 10 on the circuit board to apply the diaphragm circuit to the product. Usually, the connector strips 5 are stacked on the gold fingers 10.

[0021] In the diaphragm circuit, a combination of carbon paste area point 2 and silver paste conductor 3 is adopted. The carbon paste area point 2 has a relatively large area and a small resistance, and the silver paste conductor 3 is in a linear shape, and the resistance of the silver paste material is relatively small. The combination makes the resistance of the entire circuit from the carbon paste area point 2 to the connector strip 5 relatively small to meet special needs, and the conductive effect is not bad. Compared with using all silver paste materials, the cost is lower.

[0022] The following optimization or further explanation may be performed based on the above embodiments.

[0023] For example, the diaphragm 1 is also provided with a carbon paste line 11, which is superimposed on the outer side of the connector strip 5 of the silver paste wire 3, and can increase the thickness of the connector strip 5 so that the connector strip 5 can be stably connected to the gold finger 10 on the circuit board, with relatively low cost and relatively long service life. The connecting portion 4 is protruded on the relative side edge (such as the lower side edge or the upper side edge or the left side edge or the right side edge) of the diaphragm 1 to form a protruding connecting portion 4, which is convenient for assembly and connection with the metal finger.

[0024] For another example, the outer side of the silver paste wire 3 is also provided with an isolation insulating protective layer 6, such as insulating oil, which can protect the silver paste wire 3 and prolong its service life. In addition, when the isolation insulating protective layer 6 is at the overlap between the carbon paste area point 2 and the silver paste wire 3, the isolation insulating protective layer 6 is located at the outer side of the carbon paste area point 2 and corresponds to the silver paste wire 3, that is, the carbon paste area point 2 is connected to the silver paste wire 3 in an overlapping manner, and the isolation insulating protective layer 6 is arranged outside the overlapping connection position.

[0025] When the carbon paste area point 2 is connected to the silver paste wire 3, there is an overlap, and the connection conductive stability is good. The carbon paste area point 2 is located on the outside of the silver paste wire 3.

[0026] In addition, the diaphragm 1 is provided with an assembly positioning hole 7 so that the relative position of the diaphragm 1 is accurate when it is assembled in the product, and it can be connected with the point pins in the product. The assembly positioning hole 7 is arranged at the position of the connecting part 4 and / or the non-connecting part 4 of the diaphragm 1.

[0027] The front of the diaphragm 1 is also provided with adhesive points 8, which can be evenly distributed on the front of the diaphragm 1. The diaphragm 1 is also provided with a release film or release paper, which is connected to the outside of the adhesive points 8. The release film or release paper can not only protect the circuits (carbon paste area points 2 and silver paste conductors 3) on the diaphragm 1 from damage, but also peel off the release film or release paper during assembly, and can also use the adhesive points 8 to glue to the product to stabilize the position, so that the diaphragm 1 fits the plane of the product better, and the circuit fits the plane of the product better, so that it can operate stably when used as a touch diaphragm circuit.

Claims

1. A diaphragm circuit, comprising a diaphragm (1), characterized in that: The front side of the diaphragm (1) is provided with carbon paste area points (2) and silver paste wires (3); one side of the diaphragm (1) is provided as a connection portion (4); the carbon paste area points (2) are distributed on the diaphragm (1); the carbon paste area points (2) are connected to the silver paste wires (3) in a one-to-one correspondence; each silver paste wire (3) is provided as a connector strip (5) at the connection portion (4); and the connector strips (5) are provided in parallel with each other.

2. A diaphragm circuit according to claim 1, characterized in that: A carbon paste line (11) is also provided on the diaphragm (1), and the carbon paste line (11) is superimposed and arranged on the outside of the connector strip (5) of the silver paste conductor (3).

3. A diaphragm circuit according to claim 1, characterized in that: The carbon paste area point (2) corresponds to the touch matching area.

4. A diaphragm circuit according to claim 1, characterized in that: The connecting portion (4) is arranged to protrude from the side edge opposite to the diaphragm (1).

5. A diaphragm circuit according to claim 1 or 2, characterized in that: The outer side of the silver paste wire (3) is also provided with an isolation insulating protective layer (6).

6. A diaphragm circuit as claimed in claim 5, characterized in that: When the isolating insulating protective layer (6) is at the overlapped portion between the carbon paste area point (2) and the silver paste wire (3), the isolating insulating protective layer (6) is located outside the carbon paste area point (2) and corresponds to the silver paste wire (3).

7. A diaphragm circuit according to claim 1, characterized in that: When the carbon paste area point (2) is connected to the silver paste wire (3), there is an overlap, and the carbon paste area point (2) is located outside the silver paste wire (3).

8. A diaphragm circuit according to claim 1, characterized in that: An assembly positioning hole (7) is also provided on the diaphragm (1).

9. A diaphragm circuit according to claim 8, characterized in that: The assembly positioning hole (7) is arranged at the position of the connecting portion (4) and / or the non-connecting portion (4) of the diaphragm (1).

10. A diaphragm circuit according to claim 1, characterized in that: Adhesive points (8) are also distributed on the front side of the membrane (1), and the membrane (1) is also provided with a release film or release paper, which is connected to the outside of the adhesive points (8).

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