In modern microfabrication, photomasks (commonly referred to as “film masks” or 菲林片) play a critical role in transferring patterns onto substrates. Whether used in PCB fabrication, MEMS prototyping, or semiconductor research, film masks offer a fast and cost-efficient alternative to chrome-on-glass masks.
At Design-Realized LLC, we provide high-quality photomask solutions tailored for research labs, universities, and advanced prototyping environments.
What is a Photomask ?
A photomask is a patterned transparency used in photolithography to define structures on a substrate. In the case of film masks:
- The mask is typically made from polyester (Mylar) or similar polymer films
- Patterns are created using laser plotting or high-resolution imaging systems
- Light passes through transparent regions and is blocked by opaque regions
Film masks are widely used in:
- PCB prototyping
- MEMS development
- Microfluidics
- Optical device patterning
- Educational and R&D labs
Film Mask vs. Chrome Mask
| Feature | Film Mask | Chrome Mask (Quartz) |
|---|---|---|
| Cost | Low | High |
| Lead Time | Fast (2–5 days) | Longer (1–3 weeks) |
| Resolution | ~5–20 µm typical | <1 µm possible |
| Durability | Moderate | Excellent |
| Best Use Case | Prototyping / Low volume | Production / High precision |
Film masks are ideal for rapid iteration and cost-sensitive projects, while chrome masks are preferred for high-resolution and production-grade applications.
Our Photomask Capabilities
At Design-Realized, we specialize in delivering flexible and fast photomask solutions:
Key Specifications
- Material: Mylar / Polymer film
-
Thickness Options:
- 50 µm
- 75 µm
- 100 µm
-
Resolution:
- Standard: 10–20 µm
- High-resolution option: down to ~5 µm
-
Maximum Size:
- Up to ~500 mm (depending on design)
Typical Applications
Our film masks are commonly used in:
- Microfluidics – channel patterning
- MEMS devices – structural layers
- PCB prototypes – circuit layouts
- Optical components – diffraction patterns
- Academic research – fast iteration cycles
