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Anisotropic Conductive Film

An anisotropic, conductive film technology, used in conductive connections, conductive adhesives, conductive adhesive connections, etc., can solve problems such as reduced adhesion, inability to remove moisture from anisotropic conductive films, and inability to eliminate them. The effect of low on-resistance

Inactive Publication Date: 2016-04-13
DEXERIALS CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, even if it contains an inorganic ion exchanger, the excess water in the anisotropic conductive film cannot be removed, and the decrease in the adhesion of the anisotropic conductive film after long-term storage cannot be eliminated.

Method used

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  • Anisotropic Conductive Film

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1～5

[0039] Zeolite having an effective pore diameter of 3 angstroms (Zeorum A-3, manufactured by Tosoh Co., Ltd.) was dried under reduced pressure to volatilize water, and then pulverized and classified with a sieve. The average particle diameter of the obtained zeolite particles was 3.5 μm.

[0040] The anisotropic conductive films of Examples 1 to 5 were prepared in the same manner as in Comparative Example 1, except that the zeolite particles were added to the insulating binder in the proportion shown in Table 1.

Embodiment 6

[0042] Zeolite having an effective pore diameter of 4 angstroms (Zeorum A-4, manufactured by Tosoh Co., Ltd.) was dried under reduced pressure to volatilize water, pulverized, and classified with a sieve to prepare zeolite particles having an average particle diameter of 3.0 μm.

[0043] The anisotropic conductive film of Example 6 was prepared in the same manner as in Comparative Example 1, except that the zeolite particles were added to the insulating binder in the proportion shown in Table 1.

Embodiment 7

[0045] Zeolite with an effective pore diameter of 5 angstroms (Zeorum A-5, manufactured by Tosoh Co., Ltd.) was dried under reduced pressure to evaporate water, crushed, and classified with a sieve to prepare zeolite particles with an average particle diameter of 3.0 μm.

[0046] The anisotropic conductive film of Example 7 was prepared in the same manner as in Comparative Example 1, except that the zeolite particles were added to the insulating binder in the ratio shown in Table 1.

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Abstract

The anisotropic conductive film that suppresses the decrease in adhesion due to moisture and has excellent storage stability is an anisotropic conductive film in which conductive particles are dispersed in an insulating binder, and contains 1 to 20 wt%, preferably 5 to 15 wt% zeolite. The average micropore diameter of the zeolite is 3-5 angstroms, and the average particle diameter of the zeolite is smaller than the average particle diameter of the conductive particles. Preferably, the former is 10% to 80% of the latter. Specifically, the average particle diameter of the zeolite is preferably 0.1 μm to 8 μm, and the average particle diameter of the conductive particles is 1 μm to 10 μm.

Description

technical field [0001] The present invention relates to a useful anisotropic conductive film for anisotropically conductively connecting terminals of electronic components. Background technique [0002] As the wiring material, an anisotropic conductive film in which conductive particles are dispersed in an insulating binder is used. As the anisotropic conductive film, it is desired to use a conductive film with good adhesion and rapid curing at low temperature, and therefore a proposal to use a silane coupling agent in a radically polymerizable acrylic adhesive is proposed (Patent Document 1). [0003] Various coupling agents having different functional groups are known as silane coupling agents used for the anisotropic conductive film. However, any silane coupling agent has the following problems: when the anisotropic conductive film is stored for a long period of time, it is hydrolyzed by moisture in the air, partially condensed and oligomerized, the hydroxyl groups are r...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01B5/16C09J7/00C09J9/02C09J11/04C09J11/06C09J201/00H01L21/60H01R11/01C09J7/10
CPCH01R4/04C09J9/02H01L24/29H01L2224/83851C08K3/34C08K7/18C09J2203/326H01L2224/2929H01L2224/293H01L2924/00011H01L2924/07802C09J7/10C09J2301/408H01L2224/29075H01L2924/00014H01L2924/00H01R11/01H01B5/16
Inventor 浜地浩史石松朋之林慎一
Owner DEXERIALS CORP
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