Electrically conductive adhesive sheet, circuit board and electrical connection structure using the same
Patent 4735847 Issued on April 5, 1988. Estimated Expiration Date: 
June 22, 2007. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
June 22, 2007. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent References 3740366 3762946 3778306 Pressure-sensitive electric conductive sheet material Flexible tape having stripes of electrically conductive particles for making multiple connections Flexible tape having bridges of electrically conductive particles extending across its pressure-sensitive adhesive layer Heat sensitive type adhesive connector Patent #: 4680226 InventorsAssigneeApplicationNo. 07/061608 filed on 06/22/1987US Classes:428/209, Including metal layer428/328, Heavy metal or aluminum or compound thereof428/356, Including metal or compound thereof or natural rubber428/901PRINTED CIRCUITExaminersPrimary: Swisher, Nancy A. B.Attorney, Agent or FirmInternational ClassesH01R 4/00 (20060101)H01R 4/04 (20060101) H05K 3/32 (20060101) H05K 3/36 (20060101) H05K 1/18 (20060101) Foreign Application Priority Data1983-12-27 JPAbstractAn electrically conductive adhesive sheet is disclosed which has an electrically conducting property across a thickness thereof and an electrically insulating property along a sheet surface direction. The electrically conductive adhesive sheet comprises an electrically insulating adhesive material and electrically conductive metal powder uniformly dispersed therein. The metal powder has a melting point lower than a certain working temperature, and is flattened by application of pressure between a pair of conductors between which the adhesive sheet is provided. The adhesive material is molten at the certain working temperature and is flown by application of pressure. The adhesive sheet is useful to electrically connect a pair of circuit boards each having a plurality of conductor patterns thereon by bonding corresponding ones through the metal powder as molten, while keeping the neighboring patterns insulated. The circuit board is mechanically integrated simultaneously by the adhesive sheet. The circuit board and the connection structure using such an adhesive sheet as above are also disclosed. | |
