Toray Industries has announced a major materials innovation aiming to reshape the future of micro-electromechanical systems (MEMS). The company has unveiled a new photo-definable polyimide sealing material designed for next-generation semiconductor applications.
Built on the company’s established SEMICOFINE and PHOTONEECE platforms, the new material delivers a critical leap forward: it allows integrated fine-pattern formation and bonding through photolithography—while enabling reliable sealing of the hollow structures essential to MEMS performance.
These microscopic devices depend on hollow spaces to allow movement or shield sensitive components from external interference. Traditionally, gold has been the material of choice for sealing due to its durability and thermal resistance. But high costs and limited design flexibility have fueled an industry-wide push toward resin-based alternatives.
Toray’s solution directly tackles the shortcomings of conventional resins like epoxy, which suffer from weak thermal resistance and structural instability under temperature changes.
By optimizing both the molecular structure and photo-definable properties of polyimide, the company has engineered a material that combines high thermal resistance with low residual stress—significantly reducing warping and boosting long-term reliability.
The innovation doesn’t stop there. The new material also offers high mechanical strength, enabling finer bonding lines and increased device density—key advantages as electronics continue to shrink. It is also free from PFAS and NMP, aligning with growing global demand for safer, environmentally responsible materials.
Toray is set to present the breakthrough at the 2026 International Conference on Electronics Packaging and Hybrid Bonding Symposium, scheduled for April 14 through 18, signalling its intent to move quickly from lab to market.
The company plans to expand its semiconductor materials portfolio with this development, beginning prototyping and sample distribution to MEMS customers. Certification is targeted for 2027, with mass production slated for 2029.
Leveraging its deep expertise across chemistry, biotechnology, and nanotechnology, Toray says it will continue pushing the boundaries of advanced materials—aiming to deliver innovations that drive both technological progress and broader societal impact.
