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Heon-Sik

Heon-Sik Song, Daejeon KR

Patent application numberDescriptionPublished
20110067907LOW TEMPERATURE CURABLE PHOTOSENSITIVE RESIN COMPOSITION AND DRY FILM MANUFACTURED BY USING THE SAME - The present invention provides a photosensitive resin composition comprising: a polyamic acid including a specific repeating unit; a heterocyclic amine compound; a (metha)acrylate-based compound including one or more double bonds between carbons; a photoinitiator; and an organic solvent, and a dry film prepared therefrom. The photosensitive resin composition can be cured at a low temperature to offer process safety and work convenience, and has excellent bending resistance, soldering heat resistance, and a property of filling the pattern, as well as excellent heat resistance and mechanical properties.03-24-2011

Heon-Sik Song, Daejeon Metropolitan City KR

Patent application numberDescriptionPublished
20090101393Metallic Laminate and Method for Preparing the Same - The present invention provides a metallic laminate and a method for preparing the same. The metallic laminate includes a metal layer, and at least one polyimide resin layer The polyimide resin layer has a modulus of elasticity of 70 Mpa at 400° C.04-23-2009
20090139753Copper Clad Laminate for Chip on Film - The present invention relates to a copper clad laminate for chip on film, specifically to a copper clad laminate for a chip on film comprising a copper clad and at least one polyimide layer laminated on the copper clad, wherein the polyimide layer in contact with the copper clad comprises at least one additive selected from the group consisting of an azole-based compound, a polysiloxane-based compound, and a polyphosphate-based compound. The copper clad laminate for a chip on a film according to the present invention, upon tin plating the copper clad at high temperature, prevents delamination between the copper clad and the polyimide layer, and has excellent adhesiveness under the temperature and pressure on IC chip bonding.06-04-2009
20100113640ALKALI DEVELOPABLE PHOTOSENSITIVE RESIN COMPOSITION AND DRY FILM MANUFACTURED BY THE SAME - The present invention relates to a polyimide photosensitive resin composition that is capable of being developed by an alkali aqueous solution, and a dry film that is produced by the same, and more particularly to a photosensitive resin composition which comprises a) a polyamic acid, b) two or more (meth)acrylate-based compounds that include one or more double bonds between carbons, c) a photopolymerization initiator, d) a phosphorus-based flame retardant, and e) an organic solvent, and a dry film that is produced by the same.05-06-2010
20100316877METHOD FOR PREPARING POLYIMIDE AND POLYIMIDE PREPARED USING THE SAME - The present invention relates to a method for preparing polyimide having excellent heat resistance and processibility and, more particularly, to a method of preparing polyimide which has desirable mechanical strength during curing at low temperatures and excellent processibility to be used as an insulating film of a metal laminate plate or a coverlay film for print substrates or hard disks, and polyimide prepared using the same.12-16-2010

Heon-Sik Song, Taejeon KR

Patent application numberDescriptionPublished
20090042104MULTI-COMPONENT COMPOSITE FILM METHOD FOR PREPARING THE SAME - The present invention provides a multi-component composite film comprising a) polymer support layer; and b) porous gellable polymer layer which is formed on one side or both sides of the support layer of a), wherein the support film of a) and the gellable polymer layer of b) are unified without the interface, a method for preparing the same, and a polymer electrolyte system applied the same.02-12-2009
20090263591MULTI-COMPONENT COMPOSITE FILM METHOD FOR PREPARING THE SAME - The present invention provides a multi-component composite film comprising a) polymer support layer, and b) porous gellable polymer layer which is formed on one side or both sides of the support layer of a), wherein the support film of a) and the gellable polymer layer of b) are unified without the interface, a method for preparing the same, and a polymer electrolyte system applied the same.10-22-2009