TGV (Through Glass Via) Fabrication
Conformal Cu via
TGVs can play an important role in cost-effective advanced wafer packaging (2.5D&3D).
Glass has below advantages over silicon
High resistivity
Low electrical loss
Adjustable CTE (Better CTE match with organic package substrate than Silicon)
Low-frequency loss for RF applications (Low-loss tangent)
We offer advanced TGV (Through Glass Via) microfabrication with
Precision diameters
Achieve diameters as small as 20µm
Capability to incorporate vias of varying diameters on the same substrate
Different diameters on opposite sides of the substrate are possible. (e.g., 30µm on one side and 60µm on the other).
Versatile Via Shapes:
Accommodates different via shapes based on diameter requirements, including hourglass, straight, and tapered designs
Substrate Size Flexibility:
Ranges from standard wafer sizes (100mm, 200mm, 300mm) to larger panel sizes (up to approximately 510x510mm)
Diverse glass types
Borosilicate glass, Soda lime glass, Fused silica (quartz), Sapphire, Non-alkaline glass.
Ultra-Thin Substrate Compatibility:
Support for substrates as thin as 50µm, enabling integration into compact and cutting-edge devices.
High Aspect Ratios:
Achievable aspect ratios up to 1:10, supporting high-density interconnections for advanced electronic applications.
Innovative TGV & BGV Fabrication:
Beyond TGV, we also fabricate blind glass vias (BGV), expanding the possibilities for your projects.
Cu filled (TGV) vias
We provide Through-Glass Vias (TGV) Copper filling and metallization services, utilizing advanced electroplating techniques to achieve high-quality results. The process begins with the deposition of a Titanium/Copper (Ti/Cu) seed layer within the vias. This crucial step ensures a solid foundation for the subsequent Copper (Cu) electroplating, allowing for either conformal coatings or complete, void-free via fills.
TGV Types
Completely filled Via
Conformal Via
We also provide other related services like glass thinning using wet etching or CMP, optical level polishing using CMP, Anodic bonding with Silicon wafers, thin film metallization, etc.
RDL(Redistributed Layers) for TGV glass substrate
Both side RDL for TGV glass substrate can be possible.
Find more information here
Applications:
2.5D & 3D packaging
MEMS
RF devices (RF MEMS switches)
High-performance computing
Display
Optoelectronics
Glass interposer
Cell culture
Wafer-level optics
Gas shower plate for ALD, CVD, Dry etching equipments
Microfluidics
Biomedical
Shadow mask: an alternative to metal masks