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New high-performance evaporation masks

Tecan : 23 July, 2002  (New Product)
High-performance evaporation masks, for use across a wide range of selective vacuum chamber processes, such as the deposition of gold and silver on various substrates, have been developed by Tecan.
Significantly more durable and accurate than traditional types, the masks represent excellent value for money and will typically withstand the post-deposition cleaning process for up to ten times longer, keeping replacement costs to a minimum. Using electroforming and photo-etching techniques, the company produces tightly-costed nickel and magnetic stainless steel masks which out-perform traditional photo-etched molybdenum. The technique combines low tooling costs with superior tolerances, delivering greater density designs with higher accuracy aperture edges.

Multi-level masks can also be produced, with 'stepped' recesses, limiting the need for spacer sheets in multiple-sheet sets, if required. Cost-effective single masks, traditional multi-mask sets and stepped masks are available to meet the individual needs of all custom designs.

During manufacture, masks are subjected to computerised co-ordinate measuring as part of the company's rigorous statistical process control system to produce fully traceable 'proven' batches, suitable for delivery direct to the customer's production environment. All specified variables, such as aperture size, tolerance and thickness, are accurately measured and logged ensuring users can by-pass their own detailed goods-in inspection, if required. Time and costs are saved, and traceable quality control with hard copy back-up documents, is assured.

An established ability to fabricate all mask types ensures established and new market requirements are catered for from a single source. The company can produce whatever is required, from traditional multi-mask sets, to stepped masks in magnetic stainless steel or nickel. The manufacturing techniques cost-effectively cater for development, prototyping, small-, medium- and large-scale production applications - affording consistently accurate results and low-maintenance parts. Frames for any process need can be supplied.

Evaporation masks are used to fabricate a wide number of simple and complex micro-engineered electronic components and products, for single and multi-layer applications in industrial, aerospace, automotive, medical and pharmaceutical markets. For example, evaporation-depositing gold or silver contacts onto quartz crystal oscillator tracks and automotive thermocouples. They are also used in sputtering and spray processes for the fabrication of similar components onto substrates such as silicon or glass and for the deposition of a wide range of other surface finishes.
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