| --- Sun Dec 9 2012 | 00:00 | |
| nmz787 | azonenberg: how did those laserlab masks look under the scope? | 04:09 |
|---|---|---|
| azonenberg | nmz787: whoops, forgot to upload pics | 04:09 |
| azonenberg | give me a minute | 04:09 |
| soul-d | getting close here http://imgur.com/a/tVsni although started to break stuff again after that :P better let it rest for a bit and do a clean up of code | 04:14 |
| azonenberg | They were a bitr tricky to image | 04:14 |
| azonenberg | What I ended up doing was darkfield imaging (scattered light) with a texwipe under the mask | 04:14 |
| azonenberg | so what you're seeing is basically a silhouette of the surface since i couldn't image the emulsion directly | 04:14 |
| azonenberg | http://i.imgur.com/5fzaI.jpg | 04:14 |
| azonenberg | this is nominal 12.5 micron line/space i believe | 04:14 |
| azonenberg | i'd have to double check the GDS to be sure | 04:14 |
| azonenberg | the mask was for a client's project a long time ago and was obsolete before it even got made | 04:15 |
| azonenberg | so i cant show the whole thing but i dont think the NDA covers generic alignment marks :P | 04:15 |
| azonenberg | The coloring in the background is just due to the texwipe not being 100% flat | 04:16 |
| soul-d | 2 lines to much to show how you feel about nda | 04:16 |
| soul-d | but it's in there :P | 04:16 |
| azonenberg | actually i only cant talk about their technology, which i'm not | 04:16 |
| azonenberg | the fact that a generic alignment pattern from the lab made it onto their mask is irrelevant | 04:16 |
| azonenberg | anyway, first impressions - slight bubbles in the surface of the emulsion | 04:18 |
| azonenberg | small, maybe 5 microns or less, and not likely to show up in litho | 04:18 |
| azonenberg | Grains are visible around the edges of the lines at high mag, maybe 500nm or so across each | 04:18 |
| soul-d | got sofar today that i had some sd-card code somewhat working with reading and writing but his state machiene isn't so clean so probably gonna rewrite it but saves me hassle in seeing how it operates | 04:18 |
| azonenberg | Some very slight grain in the "light" parts of the mask are also visible | 04:19 |
| soul-d | now was trying to build memory or operate memory for display | 04:19 |
| azonenberg | closeup http://i.imgur.com/5XRxI.jpg | 04:20 |
| azonenberg | So, it's not chrome on glass | 04:20 |
| azonenberg | But its a lot better than a cheap printer on overhead transparency :p | 04:20 |
| soul-d | stuf with printers usaly require high amount of luck and high retry count :P | 04:21 |
| azonenberg | Lol yeah | 04:21 |
| azonenberg | These masks look like they'll do the job at the 15-20um feature range | 04:22 |
| azonenberg | which is what i'd target early on anyway | 04:22 |
| soul-d | winter here most lab is closed down except i still need to clean up just hope glas and water mix wel when frozen | 04:23 |
| azonenberg | lol your lab is not heated? | 04:23 |
| soul-d | no it's a single walled shed with just asbestos plating on top | 04:24 |
| azonenberg | lol | 04:24 |
| azonenberg | asbestos? fun | 04:24 |
| nmz787 | hmm | 04:24 |
| nmz787 | cool | 04:24 |
| soul-d | i know lol | 04:24 |
| nmz787 | so is that the mask, or the emulsion/resist? | 04:24 |
| azonenberg | nmz787: That's a laserlab mask | 04:25 |
| azonenberg | some kind of photographic emulsion on polyester substrate | 04:25 |
| azonenberg | laser direct imaging followed by developing | 04:26 |
| azonenberg | i believe the particles in the background are bubbles in the emulsion but i could be wrong | 04:26 |
| azonenberg | its entirely possible they're dust on the mask as well | 04:26 |
| azonenberg | it was stored in a plastic bag on a desk, not in a cleanroom, after we determined it was obsolete | 04:26 |
| azonenberg | so semi-sealed but not nearly perfect | 04:27 |
| azonenberg | the image is theoretically DF but looks like BF | 04:27 |
| azonenberg | because i'm DF'ing a white object with the mask on top :p | 04:27 |
| soul-d | lol ofcourse it was somthing simple again just quited text started scrolling again seems i forgot to initial value | 04:29 |
| nmz787 | what was that matrix of As eariler? | 04:31 |
| soul-d | my screen with a's ? | 04:40 |
| nmz787 | ahh | 04:41 |
| soul-d | trying to write display driver thingy on fpga dev kit | 04:41 |
| nmz787 | any projects that use a microscope to downsize a projector? | 04:42 |
| soul-d | nah already glad im getting stuff to work with vhdl this time | 04:45 |
| azonenberg | nmz787: there was one | 04:46 |
| azonenberg | i cant find the citation off the top of my head | 04:46 |
| soul-d | wanted to say i'm really done for today but then i figured it was already morning :') | 05:22 |
| --- Mon Dec 10 2012 | 00:00 | |
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