POLYIMIDE METAL LAMINATE USED AS MATERIAL OF CHIP ON FILM(COF) IN TAPE AUTOMATED BONDING(TAB) TAPE PROCESS

• Main Authors: FUKUDA KAZUYUKI, HAGA YASUHIKO, OHTSUBO EIJI, TAKAKI TOSHIHIKO
• Format: Patent
• Language: English; Korean
• Published: 07.03.2005
• Edition: 7
• Subjects: CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; CHEMISTRY; COMPOSITIONS BASED THEREON; COMPOSITIONS OF MACROMOLECULAR COMPOUNDS; ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR; ELECTRICITY; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; LAYERED PRODUCTS; LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT ORNON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM; MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONSONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS; METALLURGY; ORGANIC MACROMOLECULAR COMPOUNDS; PERFORMING OPERATIONS; PRINTED CIRCUITS; TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION; TECHNICAL SUBJECTS COVERED BY FORMER USPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS; THEIR PREPARATION OR CHEMICAL WORKING-UP; TRANSPORTING

PURPOSE: A polyimide metal laminate is provided to have a polyimide resin layer excelling in elastic modulus, transparency, dimensional stability, and adhesion to the inorganic compound substrate at high temperature, which is used as a material of COF in a TAB tape process. CONSTITUTION: The polyimide metal laminate contains one or more resin layer prepared from a silica dispersed polyimide composition. The silica dispersed polyimide composition is obtained by reacting alkoxysilane and/or its partially hydrolyzed polycondensate(A) with an amino-containing compound(B) in a polyimide solution and/or a polyamic acid solution under the presence of water, wherein the compound(B) has a functional group bonded to silica. The polyimide solution and/or polyamic acid solution is a solution containing polyimide copolymer and/or polyamic acid copolymer synthesized from two more diamine compounds and one more tetracarbonic dianhydride.