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zhangshenfu
Joined: 06 Jul 2009
Posts: 2
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 Posted: Mon 06 Jul, 2009 08:17 Post subject: high transparent photoresist |
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| I want to . high transparent photoresist(more than 92%),but I don't know where do have. |
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Guest
Guest
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| Posted: Mon 06 Jul, 2009 10:52 Post subject: Photo Resist with High Transparency |
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Hello,
may I ask in which wavelengths range the resist should be transparent?
The negative tone resist AZ nLOF 2000 has almost no absorption in the VIS, and looks almost completely clear even when coated up to 100 µm. |
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zhangshenfu
Joined: 06 Jul 2009
Posts: 2
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| Posted: Mon 17 Aug, 2009 02:42 Post subject: transparent photoresist |
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thank you!
in VIS(370~780nm) |
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Guest
Guest
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| Posted: Wed 19 Aug, 2009 07:41 Post subject: Transparent Photo Resist |
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Hello,
this makes it difficult - 370 nm is very close to i-line where all not-DUV resists strongly absorb - and have to absorb for exposure.
As mentioned, the AZ nLOF 2000 negative resist is almost transparent in the VIS, and looks only a little bit yellowish to the human eye due to a small absorption in the blue range near 380 nm.
If the resist should also be transparent near i-line, may I ask at which wavelength you would like to expose the resist? |
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