New Patternable Materials for Electronic Packaging

Abstract

New inorganic-organic copolymers (ORMOCERs – ORganically MOdified CERamics) were developed as protective coatings for electronic and optical devices, as patternable insulation and passivation layers for electronics, e. g. MCM's, and as possible interconnects and waveguides for micro optics.Depending on the chemical composition and the processing parameters, their important features are low permittivity constants (eR ≤ 3.2), high bulk resistance (RD > 1016 Ωcm), high dielectric strength (ED ≤ 400 V/μm), refractive index around 1.48, optical transparency in the range of 400 – 1300 nm, and good adhesion to numerous substrates, such as Al2O3, glass, silicon, copper, aluminum, steel, polyimides, polyesters and epoxides.The materials can be applied using standard technology. They are patterned by laser direct writing, photolithographic, screen printing or embossing technologies.

Applications of hybrid organic–inorganic nanocomposites

“…methacryl functionality. [150][151][152][153][154][155][156][157][158][159][160][161][162][163][164][165][166][167] . Organically modified resins retain important roles in electrical component coatings such as resistors and molding compounds, as well as spin-on dielectrics in microelectronic interlayer and multilayer dielectric and planarization applications.…”

Inorganic-organic Hybrid Materials (ORMOCERs) for Multilayer Technology – Passivation and Dielectric Behavior

“…A defined amount of hydrolized or residual alkoxy groups of the silanes will govern best adhesion to metallic substrates. As example for demonstrating the passivation properties of assemblies and boards, the passivation of thin film capacitors [4] used in SMT technology is chosen. They consist of stacked Al metallized polyethyleneterephtalate foiles [cp.…”

“…Some examples of the application of ORMOCER ® s used for passivation or dielectrics will be given. Figure 1 shows a general synthesis scheme of an ORMOCER ® used for passivation application [4]. For this example, it is composed of four co-condensed alkoxysilanes, namely 3-(glycidyl-oxypropyl)-trimethoxysilane (G), 3-(methacryl-oxypropyl)-trimethoxysilane (M), diphenylsilanediol (P2), and tetraethoxysilane (T).…”