FAQs Archive - Page 2 of 3 -

Do you have any recommendations for cleaning thinner shadowmask substrates? Are there processes that we should avoid using (i.e. sonication) for 0.002″ thick brass base substrates?

That really depends upon the type of material deposition. The mask is fairly robust and can withstand most cleaning methods as long as care is [...]

Do you have any recommendations for cleaning thinner shadowmask substrates? Are there processes that we should avoid using (i.e. sonication) for 0.002″ thick brass base substrates?administrator2019-01-25T16:23:23+00:00

In each of our shadowmask designs there are 4 thru-holes for mounting the masks onto a custom fixture we are making. That being said, if the nominal dimension is only in the foil (i.e. the base substrate dimension would be about 150um wider for the thru-holes), this wouldn’t really be ideal for mounting as I imagine the foil component would just deform. Would it be better to account for the addition?

We can adjust as necessary for the custom fixture thru holes for best fit.

In each of our shadowmask designs there are 4 thru-holes for mounting the masks onto a custom fixture we are making. That being said, if the nominal dimension is only in the foil (i.e. the base substrate dimension would be about 150um wider for the thru-holes), this wouldn’t really be ideal for mounting as I imagine the foil component would just deform. Would it be better to account for the addition?administrator2019-01-25T16:37:39+00:00

Can you provide measurements for what we would expect to have for the final dimensions of the total thickness, foil thickness, foil feature size, and stepped feature size? Is this customizable at all or are there specific process based dimensions that are used for every shadowmask?

The mask is composed of a “Base Substrate,” typically 0.005” Cartridge Brass ASTM B19, B36 with a top and bottom layer of Nickel foil ~7-15 [...]

Can you provide measurements for what we would expect to have for the final dimensions of the total thickness, foil thickness, foil feature size, and stepped feature size? Is this customizable at all or are there specific process based dimensions that are used for every shadowmask?administrator2018-10-10T18:07:45+00:00

What kind of software would you suggest to design photomasks?

Klayout - klayout.de (It’s free) A good layout tool but not a great editor but lots of strong features under the hood. On the higher [...]

What kind of software would you suggest to design photomasks?administrator2018-06-22T14:29:23+00:00

Which substrates can Indium Tin Oxide (ITO) be patterned on?

Which substrates can Indium Tin Oxide (ITO) be patterned on? We can apply ITO to most hard surface subsrates (Glass, Si, Alumnia, etc…). What is [...]

Which substrates can Indium Tin Oxide (ITO) be patterned on?administrator2018-06-08T20:34:00+00:00

Why would I choose a quartz substrate for my photomask?

Quartz has better UV optical properties and a lower TCE (Thermal coefficient of expansion), but it's also expensive.

Why would I choose a quartz substrate for my photomask?administrator2018-05-14T15:29:32+00:00

Why would I choose a soda lime substrate for my photomask?

It’s cheap and readily available and works great in the VIS range.

Why would I choose a soda lime substrate for my photomask?administrator2018-05-14T15:31:03+00:00

What is the difference between, Iron Oxide, Quartz and Soda Lime?

There are several types of glass used for precision printing, the main types are: Sodalime: Basically it’s window pane glass and cheap. Borosilicate: Optical Glass - [...]

What is the difference between, Iron Oxide, Quartz and Soda Lime?administrator2018-05-09T19:10:15+00:00

Do you have any tips/techniques for placing a shadow mask on top of the silicon substrate and clamping it down without a lot of scraping between the mask and substrate?

Typically, a pin alignment fixture is used and often made by the customer, but Photo Sciences can facilitate the process.

Do you have any tips/techniques for placing a shadow mask on top of the silicon substrate and clamping it down without a lot of scraping between the mask and substrate?administrator2018-04-12T23:43:35+00:00

I’m looking to fabricate some shadow masks to use in an electron-beam evaporator. I heard that the smallest opening you can achieve is 25µm. What about the spacing between the openings? Can they be made at 100µm?

The standard feature size, or opening, is 20 microns. Tightened feature sizes can be 10 microns or better, depending on the data provided.

I’m looking to fabricate some shadow masks to use in an electron-beam evaporator. I heard that the smallest opening you can achieve is 25µm. What about the spacing between the openings? Can they be made at 100µm?administrator2018-04-12T23:46:01+00:00

Are you able to process 200mm wafers in your facilities?

Yes, we have the capability to work with 200 millimeter wafers.

Are you able to process 200mm wafers in your facilities?administrator2018-01-16T00:07:17+00:00

Do you accept other data formats than; DWG, GDS, DXF?

We also accept raster and vector files. In addition, we can work from drawings, sketches and simple descriptions. Currently, we are working on the upload site [...]

Do you accept other data formats than; DWG, GDS, DXF?administrator2018-01-16T00:06:01+00:00