Abstract:
PURPOSE: To connect a flexible circuit board to a bare IC chip without generating any shoulder touch phenomena. CONSTITUTION: A material includes an insulating adhesive and scale-piece-like or fiber-like insulating filler dispersed in the insulating adhesive. In this case, the aspect ratio of the scale-piece-like or fiber-like insulating filler should be set to at least 20. The material is used as a connection material for connecting the film-shaped flexible circuit board 3 to the bare IC chip 4.
Abstract:
The present invention provides glass fiber strands impregnated with non-abrasive solid particles which provide interstitial spaces of at least 3 micrometers between adjacent fibers within a strand which are useful for reinforcing composites.
Abstract:
PROBLEM TO BE SOLVED: To provide a structure of connecting a board, which can provide electrodes with a fine pitch and can achieve both an insulating property and connection reliability. SOLUTION: The structure of connecting printed wiring boards 10 and 20 electrically connects a plurality of first electrodes 12, 13, which are provided to be adjacent to each other on a first board 11, to a plurality of second electrodes 22, 23, which are provided to be adjacent to each other on a second board 21, through an adhesive 30 that contains conductive particles 31 and has anisotropic conductivity. By heating and pressurizing the adhesive placed between the mutually facing first electrode 12 and second electrode 22 and between the mutually facing first electrode 13 and second electrode 23, an adhesive layer 30a is formed between the first board 11 and the second board 21, and in the adhesive layer 30a, a cavity portion 33 is formed between the first electrodes 12, 13 and between the second electrodes 22, 23. COPYRIGHT: (C)2010,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To provide a film adhesive which can be easily mixed and has excellent flexibility to improve adhesive power. SOLUTION: The film adhesive contains a bisphenol A type phenoxy resin having a molecular weight of ≥30,000, an epoxy resin having a molecular weight of ≤500, a glycidyl methacrylate copolymer, a rubber-modified epoxy resin and a latent curing agent as necessary components. The epoxy equivalent of the glycidyl methacrylate copolymer is preferably ≤1,000. COPYRIGHT: (C)2010,JPO&INPIT
Abstract:
A method for the treatment of micro pores within a mica paper that includes: obtaining a silane with a molecular weight of between approximately 15 and 300, adding the silane to the mica paper, and reacting the silane with the inner surface of the micro pores within the mica paper. After this, a resin is impregnated into the mica paper, and the resin binds to the inner surfaces of the micro pores with the mica paper through the silane. In one embodiment, the mica paper is compressed by an amount between 5% and 30% of its original thickness. In another embodiment, the mica paper is compressed both prior to reacting the silane and during impregnation with the resin.