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A UK start-up company is offering a reduced cost, environmentally superior alternative to conventional photolithography for deposited thin film coating patterning used in a wide range of electronic and photonic device applications.

Summary

Profile Type
  • Technology offer
POD Reference
TOGB20230308033
Term of Validity
8 March 2023 - 7 March 2025
Company's Country
  • United Kingdom
Type of partnership
  • Commercial agreement with technical assistance
Targeted Countries
  • All countries
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General information

Short Summary
A UK start-up is offering an all-dry peelable solid film lithography (PSFL) masking process for low temperature vapour deposited thin film coating patterning at 10µm. The process is a reduced cost, environmentally superior alternative. Electronics and optics manufacturers who use contact and track metallisation, thin film transistor and solar cell amorphous oxide semiconductors, high-k oxide dielectrics etc. are sought for commercial agreements with technical assistance and eventual licensing.
Full Description
In the UK, a startup company was created solely dedicated to developing the technology that is the subject matter of this offer. PSFL technology provides the simplicity and elegance of having a micro aperture patterned protective film mask that is easy to transfer to the workpiece and does not need to be chemically removed, but is physically peeled-off, from the substrate surface after use and which leaves no attachment layer or deposition coating residue. The PSFL mask retains the residual deposited coating on its exposed surface and removes it when the mask is cleanly peeled-off leaving no debris or contamination on the sample surface. Once the PSFL film mask has been peel removed from a sample surface as a whole sheet, the required patterned coating is revealed – as defined by the film mask precision laser cut patterned surface exposure apertures through which the coating deposits onto the substrate surface. PSFL is a single use recyclable solid plastic film aperture patterned masking technology for use with vacuum and vapour deposition processes for patterning thin film coatings deposited at < 140oC requiring patterned features of about 10µm (although it is believed that with suitable development features < 3µm can be achieved).
Advantages and Innovations
• All dry mask patterning process.
• Efficient collection of mask residue for ease of handling and recycling (or precious metal reclaim if required).
• No wet or dry etching of a whole area deposited coating required.
• Pre-patterned, aligned, and transferred masks mean no substrate degradation or contamination due to on-sample mask patterning.
• Reduced cost processing.
• Remove the need for toxic and hazardous liquid or gaseous chemistry processing.
• Single use recyclable film masks remove the need for master mask cleaning and storage.

The overriding novelty of peelable solid film aperture patterned masks is in the elimination of any wet or dry etch processing of whole area vapour deposited thin film coatings to achieve the required coating pattern. PSFL technology enables eco-friendly processing with benefits to the environment because it removes dependence on, and treatment/disposal of, hazardous – and in some cases – toxic materials. PSFL dry single use solid plastic film masks promotes clean processing and enables easier residual mask material collection, handling, and disposal (recycling). Additional innovation has also been created in the mask-substrate attachment and removal processing, and in the manufacture of several thin film solid-state devices.
Stage of Development
  • Available for demonstration
Sustainable Development Goals
  • Goal 9: Industry, Innovation and Infrastructure
IPR status
  • Secret know-how

Partner Sought

Expected Role of a Partner
The company seeks partners who are looking to reduce both the cost and the environmental impact of their patterning stages in their thin film electronics production processes. The partners may be industrials or research institutions, but they should be prepared to collaborate to adapt the use of the PSFL technology for their specific application. It is expected that the partner will have the resources to engage on a technical level to initially evaluate the PSFL technology through a technology cooperation agreement.
Type and Size of Partner
  • Big company
  • SME 50 - 249
  • R&D Institution
Type of partnership
  • Commercial agreement with technical assistance

Dissemination

Technology keywords
  • 001001015 - Semiconductors
  • 001001009 - Micromachining
  • 01002001 - Micro and Nanotechnology related to Electronics and Microelectronics
  • 001001013 - Printed circuits and integrated circuits
Market keywords
  • 03004003 - Other electronics related equipment
  • 03004001 - Semiconductor fabrication equipment and wafer products
Targeted countries
  • All countries

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