Anisotropic conductive film (ACF) with controllable distribution state of conductive substance and manufacturing method thereof

Patent metadata

Field	Value
Publication number	US-10957668-B2
Application number	US-201816083218-A
Country	US
Kind code	B2
Filing date	Jun 21, 2018
Priority date	May 16, 2018
Publication date	Mar 23, 2021
Grant date	Mar 23, 2021

Abstract

The present disclosure relates to an anisotropic conductive film (ACF) with controllable distribution state of conductive substance and a manufacturing method thereof. The ACF includes: a porous template, a plurality of conductive tubes, and an insulation glue layer. A plurality of through holes are configured on the porous template and to penetrate the porous template along a thickness direction of the porous template. Each of the conductive tubes is respectively inserted into one through hole and protrudes from the through hole at both ends, and the insulation glue layer is configured to wrap at least one protruding portion of the conductive tube protruding from the porous template. As such, the distribution state of the conductive tube may be controlled by controlling the density of the through holes within the porous template during the preparation process, and the distribution state of the conductive substances in the ACF may be precisely controlled.

First claim

What is claimed is:

1. An anisotropic conductive film (ACF) with a controllable distribution state of conductive substance, comprising:
a porous template, a plurality of conductive tubes, and an insulation glue layer;
wherein a plurality of through holes are configured on the porous template and are configured to penetrate the porous template along a thickness direction of the porous template, each of the conductive tubes is respectively inserted into one through hole and protrudes from the through hole at both ends, and the insulation glue layer is configured to wrap at least one protruding portion of the conductive tube protruding from the porous template;
wherein the conductive tube is carbon nanotube (CNT); and
wherein a coverage dimension of the insulation glue layer of the porous template for the two opposite sides is less than a dimension of the porous template, and edges of the two opposite sides of the insulation glue layer are retracted with respect to edges of the porous template.

2. The ACF according to claim 1 , wherein the insulation glue layer covers two opposite sides of the porous template, and the insulation glue layer completely covers the conductive tubes.

3. The ACF according to claim 2 , wherein the through holes are formed on the porous template in an array, and each of the conductive tubes respectively corresponds to one through hole.

4. The ACF according to claim 1 , wherein the porous template is made of SiO 2 or porous anodized aluminum.

5. The ACF according to claim 1 , wherein the insulation glue layer is an epoxy resin or an acrylic adhesive.

Assignees

• Wuhan China Star Optoelectronics Semiconductor Display Tech Co Ltd

Inventors

• Li Hui
• Zhao Zhenyu
• Huang mang
• Sun Yu

Classifications

• H10W90/734

  between a chip and a stacked insulating package substrate, interposer or RDL · CPC title

• H10W72/01315

  Forming coatings · CPC title

• H10W72/354

  comprising polymers · CPC title

• H10W72/353

  not comprising solid metals or solid metalloids, e.g. ceramics · CPC title

• H10W72/352

  comprising metals or metalloids, e.g. solders · CPC title