Anisotropically conductive sheet, production process thereof and applied product thereof
AssigneeJsr Corporation
InventorsKiyoshi Kimura, Sugiro Shimoda, Naoshi Yasuda, Daisuke Yamada
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Abstract
An anisotropically conductive sheet can retain required conductivity over a long time even when used repeatedly, or used under a high -temperature environment. The sheet contains conductive particles exhibiting magnetism in a state oriented in a thickness-wise direction in an elastic polymeric substance having a durometer hardness of 20 to 90. The particles are coated with a lubricant or parting agent. In addition, the sheet has a long service life owing to its high durability and thermal durability.
Claims27
An anisotropically conductive sheet, comprising:
- conductive particles contained in an elastic polymeric substance, the particles exhibiting magnetism in a state oriented in a thickness-wise direction of the sheet, and
- a lubricant or parting agent which is coated on the surfaces of the conductive particles, wherein said lubricant or parting agent is interposed between the conductive particles and the elastic polymeric substance,
- wherein a durometer hardness of the elastic polymeric substance is 20 to 90.
A process for producing an anisotropically conductive sheet, comprising:
- coating the surfaces of conductive particles exhibiting magnetism with a lubricant or parting agent, to obtain coated particles,
- dispersing the coated particles in a liquid material capable of forming an elastic polymeric substance, and forming a sheet-forming material layer,
- applying a magnetic field to the sheet-forming material layer in the thickness-wise direction thereof, and
- subjecting the sheet-forming material layer to the a curing treatment, thereby converting said liquid material into the elastic polymeric substance.
Dependencies are inferred from the claim text.