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Conductive adhesive film with high peel strength and preparation method thereof

A conductive adhesive film, high peeling technology, applied in the direction of conductive adhesives, chemical instruments and methods, adhesives, etc., can solve the problems of many conductive particles, inconvenient use, high production cost, etc., to achieve improved peel strength and increased overlap probability , The effect of shielding effect enhancement

Inactive Publication Date: 2011-12-21
GUANGZHOU FANGBANG ELECTRONICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The existing conductive adhesive film has the following disadvantages: low peel strength, high resistance, many conductive particles to be used, high production cost and low shielding effect (only about 40dB), so it is difficult to meet market demand; especially for shielding, shielding The effect requires more than 60dB, it is difficult to meet the use requirements
However, due to structural limitations, it can only be bonded on one side, and cannot be bonded on both sides at the same time. It is inconvenient to use and has relatively large limitations; and its electromagnetic shielding effect is lower than 45dB, which is far from meeting market demand.

Method used

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  • Conductive adhesive film with high peel strength and preparation method thereof
  • Conductive adhesive film with high peel strength and preparation method thereof
  • Conductive adhesive film with high peel strength and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] High peel strength conductive adhesive film with via holes, such as figure 2 As shown, a conductive adhesive layer 3 is included, and the outer surface of the conductive adhesive layer 3 may be covered with a protective release film 4 . The protective film can have only one layer of protective film; it can also be two layers of protective film, one of which can be a release film, and the other layer can be a release paper. The protective film can effectively protect the outer surface of the conductive adhesive layer 3 from being polluted by foreign dust and other impurities. The conductive adhesive layer 3 is provided with a layer of conductive layer 5, and the conductive adhesive is coated on both sides of the conductive layer 5; The conductive adhesive on the side surface contacts through the through hole and is bonded together, which can effectively increase the peel strength between the conductive adhesive and the conductor layer.

[0036] The through holes on th...

Embodiment 2

[0038] like image 3 As shown, the conductor layer 5 can be provided with two layers inside the conductive adhesive layer 3 , namely a first conductor layer 51 and a second conductor layer 52 . The first conductive layer 51 and the second conductive layer 52 separate the conductive adhesive layer 3 into three layers, that is, the conductive adhesive layer 3 is filled or coated between the first conductive layer 51 and the second conductive layer 52 by coating or dipping. , forming a stacked layered structure; to enhance the conductivity and shielding effect.

Embodiment 3

[0040] like Figure 4 As shown, the conductor layer 5 may be provided with three layers in the conductive adhesive layer 3 , namely the first conductor layer 51 , the second conductor layer 52 and the third conductor layer 53 . The first conductor layer 51 , the second conductor layer 52 and the third conductor layer 53 separate the conductive adhesive layer 3 into four layers to form a stacked layered structure to enhance the conduction and shielding effects.

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Abstract

The invention discloses a high-peeling-strength conductive adhesive film with a through hole, which at least includes a conductive adhesive layer and at least includes a conductive adhesive layer. Distributed on both sides of the conductor layer; the conductor layer is provided with a number of through holes, and the conductive glue coated on both sides of the conductor layer contacts through the through holes; the thickness of the conductor layer is 0.05-150 microns . The beneficial effects of the present invention are: the metal conductor layer arranged in the conductive adhesive can increase the overlapping probability of conductive particles in the conductive adhesive, and the resistance can be effectively reduced; at the same time, the number of conductive particles in the conductive adhesive can be reduced, and the cost can be reduced; the shielding effect It is effectively enhanced and can achieve a shielding effectiveness of more than 60dB. Because of the setting of the through hole, the peeling strength of the conductive adhesive film is significantly improved.

Description

[0001] technical field [0002] The invention relates to a conductive adhesive film with high peeling strength and a preparation method thereof. Background technique [0003] Existing conductive adhesive films with high peel strength generally only have a separate conductive adhesive layer 3. When in use, such as figure 1 As shown, the conductive glue layer 3 is filled between the metal conductors 2 , and the conductive glue is closely attached to the surface of the metal conductors 2 to realize electrical conduction between the metal conductors 2 . [0004] The existing conductive adhesive film has the following disadvantages: low peel strength, high resistance, many conductive particles to be used, high production cost and low shielding effect (only about 40dB), so it is difficult to meet market demand; especially for shielding, shielding The effect requires more than 60dB, which is difficult to meet the use requirements. [0005] In order to overcome the shortcomings of...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J7/02C09J9/02B32B3/12B32B15/04H05K9/00
Inventor 苏陟
Owner GUANGZHOU FANGBANG ELECTRONICS
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