David Carron

3D Images of Integrated Circuits

David Carron, thank you for your contribution of the Standard Cell.

Given your toolset, might it be possible to render a diagram of a single transistor with the some part of the depletion / doping regions enhanced, something like the edge of the standard cell you did. This would help people visualize the action of a transistor in the transistor article. No pressure if this is inconvenient for you. I feel guilty that the article has no detailed picture of a physical representation of a transistor. It's no problem for me, since I already know the material. Currently it is not possible for a new reader to understand how a transistor works based on the article, because the current transistor diagrams do not suffice for understanding. Regards, --Ancheta Wis 04:40, 16 July 2006 (UTC)

What you're looking for is some active, the channel, the poly a couple of contacts and the poly contact, right? probably for pmos and nmos? I can probably dig up something like that. --David Carron 08:45, 16 July 2006 (UTC)

Yes, and that rendering could even be on the integrated circuit article. That would be most welcome. --Ancheta Wis 10:18, 16 July 2006 (UTC)

I just uploaded two new images, "Transistor_3d.png" and "Transistor_3d_xsection.png". If these are the kind of things you had in mind, go ahead and include them in whatever article you think is most appropriate.

--David Carron 10:55, 16 July 2006 (UTC)

Thank you. Now the Wikipedia has some work in front of it. If it is alright with you, I will start a thread on Wikiproject Electronics to invite some work on the action of a single transistor. Regards, --Ancheta Wis 11:23, 16 July 2006 (UTC)

I'm glad the pictures are Ok. I tried adding one of them to the "semiconductor device" page, but I guess I just don't know enough about editting to get it right (the preview kept showing a broken link to the image). --David Carron 11:32, 16 July 2006 (UTC)

I tried it and it added OK. Thank you, Ancheta Wis 11:47, 16 July 2006 (UTC)

I think the transistor pix are completely cryptic. The visible structure is dominated by array contacts, which are nowhere explained, and the rest is pretty hard to interpret, too. Dicklyon 20:11, 16 July 2006 (UTC)

You could be right about the difficulty of interpreting the images. That being said, "real world" devices do tend to be overloaded with all sorts of extra stuff that often doesn't show up in text-books.

I'll see if I can't find a simpler transistor (or perhaps try cutting out some of the extraneous details in the exisiting ones), and also try adding some explanatory text. --David Carron 20:21, 16 July 2006 (UTC)

How about if I generate some 2d views with appropriate cross-sections? The same unwanted detail will still be there, but the overall effect might be a little more clear --David Carron 14:54, 17 July 2006 (UTC)

Question

Can you please mention which standard cells your pictures are of? e.g. is it a NAND gate or an inverter? Thanks, Mxreb0 (talk) 16:58, 18 February 2009 (UTC)

Which image are you referring to? I don't really keep track of which cell is present in which image, but most likely I'd be able to work it out.

http://upload.wikimedia.org/wikipedia/commons/thumb/a/aa/Silicon_chip_3d.png/300px-Silicon_chip_3d.png <- This one. 79.186.186.129 (talk) 21:41, 12 October 2009 (UTC)

That's a 4 input nand in a 90nm technology. The vertical scale is stretched by a factor of 10.

great work on the IC graphics!

Thanks very much for your work! I'm wikifying and updating the work at http://infoeng.sf.net/cea-proposal.pdf and http://infoeng.sf.net/dic-proposal.pdf , but I would really like your help creating neat 3-D molecular integrated circuit images. It might even help the fantasized devices to become reality. :) —The preceding unsigned comment was added by JPatrickBedell (talk • contribs) 01:04, 15 January 2007 (UTC).

I'd be happy to help generating whatever images you'd like. I took a quick look at the images in the PDF you sent, and I'm pretty sure that if you have the GDSII and a layermap, I could get a some nice 2d and 3d images for you to choose from. David Carron 06:56, 15 January 2007 (UTC)

Hi! I'll work on the GDS and layer map, and make them available as Wikiversity learning projects: http://en.wikiversity.org/wiki/Capillary_electrode_array and http://en.wikiversity.org/wiki/DNA_integrated_circuit . JPatrickBedell 07:20, 16 January 2007 (UTC)

Cool. If your GDSII layers differ from the process fab layers you'd like to see (they almost certainly do) then I'll need the Boolean equations for the derivation. I'll also need each layer's bottom and thickness, and probably the colours you'd like to see (The metallic layers are easy enough to guess, but people always seem to have their own preferences for the others). David Carron 09:19, 16 January 2007 (UTC)

Email

I dropped you an e-mail. --KP Botany (talk) 07:07, 3 May 2009 (UTC)

Got it, replied. David Carron (talk) 08:00, 3 May 2009 (UTC)

File:Pneumatic transistor.png

Did you forget to add a license tag for this image when uploading.?

Wikipedia takes copyrights seriously, so images need to have an appropriate license tag

You may wish to read Wikipedia:Image_copyright_tags/All and Wikipedia:Image_copyright_tags#For_image_creators which will assist you :) Sfan00 IMG (talk) 14:43, 22 July 2010 (UTC)

File copyright problem with File:Pneumatic transistor.png

Thank you for uploading File:Pneumatic transistor.png. However, it currently is missing information on its copyright status. Wikipedia takes copyright very seriously. It may be deleted soon, unless we can determine the license and the source of the file. If you know this information, then you can add a copyright tag to the image description page.

If you have uploaded other files, consider checking that you have specified their license and tagged them, too. You can find a list of files you have created in your upload log.

If you have any questions, please feel free to ask them at the media copyright questions page. Thanks again for your cooperation. Sfan00 IMG (talk) 16:00, 23 July 2010 (UTC)

The copyright is right there - public domainDavid Carron (talk) 20:26, 23 July 2010 (UTC)