Insulating Substrate Metal Adhesion Improvement TRIZ Cases

Controlling copper roughness and grain size improves resist adhesion, etching quality, and defect reduction in adhesive-free flexible substrates.

Controlling Ag solid solution at copper edges suppresses hardening and peeling, improving ceramic bond reliability under thermal cycling.

Silver-containing penetrating regions in silicon nitride improve copper bonding strength, cold durability, and migration resistance.

Selective laser removal of the anti-rust layer in via bottoms lowers contact resistance while preserving corrosion protection on the wiring board.

A stepped via electrode structure releases curing gas to prevent electrode peeling while preserving package rigidity and electrical characteristics.

A copper hardness gradient near the brazed interface helps ceramic semiconductor substrates resist hot-cold cycle peeling.

Controlling carbide formation near the copper-ceramic bond suppresses interface hardening and improves substrate thermal cycle reliability.

Controlled surface energy and contact angles suppress ink spread and bulging, enabling conductive inkjet thin wires with high transmittance.

A structured metal layer with over 60% solid material near the ceramic interface helps prevent detachment under temperature cycling.

A sputtered silicon nitride film strengthens smooth copper-dielectric bonding while limiting high-frequency signal loss and fluorine-related reliability issues.

Controlled oxygen in the titanium nitride interface stabilizes Cu or Al dispersion, improving bond strength and thermal cycle durability.

A tailored photosensitive resin and treated filler enable finer photo vias, stronger plated-copper adhesion, and stable insulation in multilayer boards.

A stepped protective layer supports fine outer circuit patterns to limit collapse and deformation while preserving low transmission loss.

Controlled surface unevenness regions in silicon nitride substrates cut bonding defects and micro-gaps while improving thermal-cycle reliability.

A Cu-Ti-Sn/In bonding layer enables ceramic-to-copper brazing in nitrogen, limiting Ti oxidation and supporting faster continuous production.

Alternating bend regions and foil placement reduce tensile stress in multilayer substrates, preventing metal foil breakage during bending.

Filling particle-defect holes in a ceramic bonded substrate with copper and bonding layer suppresses partial discharge and electrical breakdown.

A segmented multilayer board uses low-roughness surfaces, via filling, and hole plugging to cut high-frequency loss while improving heat dissipation.

Segmented metal regions with over 70% solid area and local silver enrichment strengthen metal-ceramic bonding under thermal cycling.

Controlled low-oxygen aluminum casting bonds ceramic directly, raising bond strength while limiting warping and preserving heat dissipation.

Resin layers on glass surfaces, through holes, and outer edges buffer thermal stress and suppress cracks in fine-pattern circuit boards.

A stepped via electrode layout vents gas from the insulating layer while preserving electrode rigidity and preventing peeling in semiconductor packages.

A Ti-Ag-Cu bonding layer with Sn or In enables faster ceramic-to-copper thermal joining while preserving bond strength and limiting element diffusion.

A polished seed layer enables conductive metal bonding on ceramic or other substrates, improving heat flow, thermal stability, and CTE matching.

A stepped insulating surface enables AOI inspection of embedded fine-line circuit patterns while supporting 8 um or smaller routing and stronger layer adhesion.

A protruding and embedded pad structure improves pad-to-insulating-layer adhesion in thin circuit boards, reducing cracks and delamination.

An etching barrier layer around the pad opening blocks etchant ingress and keeps the solder resist adhered during plating, etching, and use.

Raised terminals on a protective layer free PCB surface area for spiral coil wires, preserving coil area ratio and increasing thrust.

A solder resist dam blocks adhesive resin from bleeding into split lead-frame gaps, preserving electrical clearance and package isolation.

Controlling oxygen at 1 at% or more in the titanium nitride bonding layer strengthens nitride ceramic joints and improves thermal cycle durability.

Higher-viscosity conductive paste keeps side wiring continuous across inclined substrate corners, improving bonding and conduction stability.

Silver-filled penetrating regions in silicon nitride improve copper bonding strength while preserving cold durability and insulation resistance.

Controlled copper grain growth enables lower-temperature ceramic-copper bonding that limits warp while maintaining strength and TCT characteristics.

Controlled Ag-rich and Ag-poor regions in an Ag-Cu-Ti bonding layer improve etching control, bond strength, and TCT consistency.

By filling exposed particle-defect holes with copper and bonding layer, this bonded substrate suppresses partial discharge and electrical breakdown.

A nonrectangular wiring cross-section improves component carrier adhesion and resists delamination without degrading RF signal integrity.

Controlling copper-sheet dislocation density and trace impurities improves heat cycle resistance without enlarging the bonded substrate.

Thermal vias link embedded components to a groove-protected heat pipe, improving PCB cooling without heat pipe collapse during lamination.

An active metal compound layer enables strong copper-ceramic bonding at lower temperatures while improving thermal cycle crack resistance.

A fluorine-rich insulating surface and plasma treatment cut high-frequency signal loss while preserving circuit pattern adhesion and board reliability.

A reactive coating layer chemically bonds low-dk insulating layers to metal traces, cutting signal loss while preventing delamination and warping.

Lower-temperature active metal brazing controls copper grain growth to reduce board warp while maintaining bonding strength.

Surface-modified pores improve seed-layer adhesion on resin while keeping roughness low enough to prevent fine copper wiring collapse and separation.

Low-oxygen, low-dew-point aluminum casting directly bonds ceramic substrates, raising bond strength and reducing warping in power modules.

A guided cushion pressurizing jig keeps pressure uniform during lamination, reducing voids and improving insulated circuit substrate bonding.

Limiting Al, Si, Zn, and Mn near the copper-ceramic bond suppresses intermetallic hardening and improves thermal cycle reliability.

A roughened copper foil with a controlled nickel rust-preventive layer preserves resin bond strength under corrosive gases and humidity.

Ti oxide contact points help a Ni film bond to an AlN circuit board, limiting delamination, Cu corrosion, and thermal stress.

Insulating filler in metallization trenches covers substrate edges to curb electromigration, reduce thermal cracking, and block moisture ingress.

Selective hole formation and panel metallization create sidewall contacts, thermal conduits, and EMI shielding in compact molded power modules.

A variable-diameter through-via with adhesion and copper conductive layers cuts high-frequency loss while supporting dense LSI substrate miniaturization.

Controlling seed-layer roughness to Ra 0.05-0.30 μm suppresses interfacial voids in copper plating and improves wiring board adhesion.

Trapezoidal conductors on a disc drive suspension flexure increase peel strength while reducing bending stiffness for accurate slider orientation.