INTERLITH - Technical Details

What Does the INTERLITH Process Look Like?

INTERLITH is a fully wet spin on processed material, in where all the actions are performed in an atmospheric environment.

 

In the same way you would process a traditional photoresist, only with INTERLITH there is no development step and the final result is a film with conductive traces where the light has exposed the film.

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Process: Coat → UV exposure (mask defined) → bake to set the glass and seal the metal.
Function: Arbitrary conductive routing inside one monolithic glass sheet, no further development or plating required.
 

Specification Guidance

• Feature sizes: down to 20 microns with contact masks; coarser on projection tools.

• Layering: sequential coat/expose/bake cycles enable multi-layer routing and simple buried vias.

• Thermal budgets:

  • Low-temperature set: ≤ 250 °C (3H silica matrix).

  • High-temperature glass densification: available within the same material.

• Adhesion & durability: metal is sealed inside the glass film; dark regions remain insulating.

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Lifetime Guidance

As a result of environmental effects and electron migration, the final INTERLITH based interconnects will experience a certain MTTF timeline.

 

In order to map out the expected lifetime of your interconnects we have computed (using Black's Model) the following chart. Hereby showing the effects of current density and temperature on the years that the final INTERLITH based interconnect is able to operate reliably.

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Design & Integration Notes

• Masks: Standard chromium-on-glass or film masks; hard contact improves edge acuity.

• Stacks: Compatible with glass/FR-4 carriers; can be laminated, bonded, or integrated as a utilities layer in interposer stacks.

• Open pads / landings: Keep windows minimal; most routing should remain buried for maximum robustness.

• Current & length: Best for short to moderate runs, sensing, and utility paths. For long, high-current distribution or ultra-low loss, pair with copper technologies.

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Handling, Storage & Safety

• Storage: INTERLITH is a light sensitive compound, store it cool and away from ambient light.

• Handling: INTERLITH contains flammable solvents, store according to local safety regulations.

• Disposal: INTERLITH contains silver metal salts, dispose according to local waste disposal regulations.