LIGHT-TRANSMISSIBLE ELECTROMAGNETIC SHIELDING PART, HAVING ELECTROMAGNETIC SHIELDING PROPERTY, HIGH VISIBLE LIGHT TRANSMISSIVITY, LOW REFLECTIVITY TO THE OUTSIDE LIGHT, PRODUCED BY USING PHOTOSENSITIVE THICK FILM PASTE MATERIAL

摘要

PURPOSE: A light-transmissible electromagnetic shielding part is provided, which is produced by using a photosensitive thick film paste material and has an electromagnetic shielding property, high visible light transmissivity, low reflectivity to the outside light, and excellent endurance. CONSTITUTION: The light-transmissible electromagnetic shielding part(1) is produced by a process comprising the steps of: spreading a thick film black paste on a transparent glass substrate(2) and then spreading a thick film electroconductive paste on the thick film black paste or laminating each paste in the form of sheets; exposing the layers to a chemical beam to form a geometric pattern(3); developing the patterned zone by using a solvent; removing the unexposed zone; calcining the geometrically patterned exposed zone; removing organic components; sintering inorganic components. The thick film black paste comprises a black pigment comprising at least one of ruthenium oxide, polynary ruthenium oxide, chromium oxide, iron oxide, titanium oxide, a carbon black, nickel, nickel borate, or their mixture, at least one inorganic binder, an organic polymer binder, a photoinitiator and a photocurable monomer. And the thick film electroconductive paste comprises an electroconductive particle comprising at least one metal selected from silver, copper, nickel, palladium, gold, aluminum, tungsten, chromium, titanium, and platinum, silver-coated nickel or ceramic powder or their mixture, at least one inorganic binder, an organic polymer binder, a photoinitiator, and a photocurable monomer.