MPW 18th Call on 220nm SOI

CORNERSTONE users are invited to submit designs to the eighteenth call with a platform of 220 nm SOI (passive devices with heaters).

Due to the current Covid-19 pandemic, the CORNERSTONE facilities have been closed down. We are therefore able to re-open this call with an extended mask submission deadline of Friday 1st May 2020. If you wish to take advantage of this extension, please sign up before Friday 17th April 2020.

The process is shown in the below animation:

A process design kit (PDK) is available using Luceda’s IPKISS software, subject to purchasing the appropriate license. To obtain a copy of the software and a license key, please contact Luceda by sending an email to This email address is being protected from spambots. You need JavaScript enabled to view it., specifying that you require a license for CORNERSTONE PDK usage. Of course, the CORNERSTONE PDK is free of charge if you already have a valid IPKISS license.  

Access to this run is charged with the following cost options:

Design area: 11.47 mm x 4.9 mm = £10,000.

Design area: 5.5 mm x 4.9 mm = £7,000.

The sign-up deadline has been extended to Friday 17th April 2020. The mask submission deadline has been extended to Friday 1st May 2020.

For more information, full design rules and quick reference design rules, please download the CORNERSTONE 18th Call Design Rules documents and the .GDSII template files.

In order to help you ensure that you comply with the design rules, you can also download a design rule check (DRC) checklist and if you have access to Tanner L-Edit software, a .tdb version of the template containing a DRC file that you can run to automatically find any design rule violations (note that the automatic DRC will not check all of the design rules, so it remains very important to read the design rules in detail).

For any queries, including questions on bespoke processing i.e. custom etch depths etc., please contact This email address is being protected from spambots. You need JavaScript enabled to view it.