Anisotropic electroconductive film

An anisotropic, conductive film technology, applied in the direction of conductive connection, conductive adhesive, conductive adhesive connection, etc., can solve the problems of reduced adhesion, inability to eliminate, and inability to remove moisture in the anisotropic conductive film, to achieve The effect of low on-resistance

Inactive Publication Date: 2013-11-06
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 electroconductive film

Examples

Experimental program
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Effect test

Embodiment 1～5

[0039] Zeolite (Zeorum A-3, manufactured by Tosoh Co., Ltd.) with an effective micropore diameter of 3 angstroms was dried under reduced pressure to evaporate water, and then it was 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 1-5 were prepared in the same manner as in Comparative Example 1, except that the zeolite particles were added to the insulating binder in the ratio shown in Table 1.

Embodiment 6

[0042] Zeolite with an effective micropore diameter of 4 angstroms (Zeorum A-4, 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.

[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 ratio shown in Table 1.

Embodiment 7

[0045] Zeolite with an effective micropore 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

This anisotropic electroconductive film in which a decrease in adhesiveness due to moisture is suppressed and which has excellent storage stability is an anisotropic conductive film in which electroconductive particles are dispersed in an insulating adhesive, the anisotropic conductive film containing 1-20 wt% and preferably 5-15 wt% of a 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 electroconductive particles. Preferably, the former is 10%-80% of the latter. Specifically, the average particle diameter of the zeolite is preferably 0.1 µm-8 µm, and the average particle diameter of the electroconductive particles is 1 µm-10 µm.

Description

technical field [0001] The present invention relates to a useful anisotropic conductive film for anisotropically conductive connection between 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 an anisotropic conductive film, it is desired to use a conductive film with good adhesion and fast curing at low temperature, so it has been proposed to use a silane coupling agent in a radically polymerizable acrylic adhesive (Patent Document 1). [0003] Various coupling agents having different functional groups are known as the silane coupling agent used in the anisotropic conductive film. However, no matter what kind of silane coupling agent, there are the following problems: if the anisotropic conductive film is stored for a long time, it will be hydrolyzed by moisture in the air, partially condensed and oligomerized, the hydroxyl ...

Claims

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Application Information

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IPC IPC(8): H01B5/16C09J7/00C09J9/02C09J11/04C09J11/06C09J201/00H01L21/60H01R11/01C09J7/10
CPCH01L2224/83851H01L24/29H01R4/04C09J9/02C08K3/34C08K7/18C09J2203/326H01L2224/2929H01L2224/293H01L2924/00011H01L2924/07802C09J7/10C09J2301/408H01L2224/29075H01L2924/00014H01L2924/00H01R11/01H01B5/16
Inventor 浜地浩史石松朋之林慎一
Owner DEXERIALS CORP
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