Photolithography

[TheFlam3head]

Very cool vid! To the point and the music wasn't that bad. i actualy liked it. idk why some1 was complaining it was too gangsta. lmao.

[MucusFelidae]

No facemask?

That costs you at least 5% yield.

[ave383]

Is there any project someone can do in their garage using this tech?

[ScottyHeadbanger]

Background music a little cheesy guys - but great "cliff notes" video on photolithography! Good job - two thumbs up!

[againstas]

Very cheesy :P Loved it

[AdilFaranj]

Damn this looks expensive i wanna open my own photolithography business in Africa lol

[xsiobhandocx]

He isn't wearing a mask AND he is touching the wafer with his hand??? Sacking offence!

[stemmer429]

Why isnt he whereing a mask?!? I work for a semiconductor in Photolithography and we are required to always keep our mouth and nose covered.... whats different bout this company??

[bethlier]

@stemmer429

This is a user facility called the Cornell Nanoscience and Technology Facility (CNF). It's part of a National Nanotechnology Infrastructure Network that makes the clean room, tools and technical expertise available to anyone. It is a mid-level clean room suited for making research devices or other prototypes by university researchers, industry or government. That is why there are less-stringent requirements than inductry clean rooms.

[bigjared420]

So much win......

[densepez]

so.... what's a nano meter?

[bethlier]

@densepez A nanometer is 1 trillionth of a meter. VERY SMALL!

[jojob987654]

@bethlier A nanometer (nm) is a billionth of a meter (1 x 10^-9 m).

[jojob987654]

@densepez See my response! It's correct!

[seindich]

lithos means not light but something like stone

[jsbizkitfan]

@seindich this drove me crazy. PHOTO = light, Lithos = stone, Graphis = writing.

[wasitrealy]

That repeditive music is REALLY getting on m nerves...

[uglyfresh]

I used to work in the thin films area at formfactor inc., when it was slow I helped the litho area clean their mask, and then inspect them but they where 12 inch mask uhhh so boring but I learned a lot I worked with t2, t5, c4, and t6 mask.

[1NX9]

I like the background music.  ^_^

[tomtom1185]

I know this guy and he ROCKS!

[ifuckinghateapple]

@tomtom1185

I know him to and he passes kidney ROCKS!

[happygamestvfun1]

he works for intel?

[mansitopinta]

Am I the only youtuber here who is immature enough to realize that his name is funny?

Sincerely:

Industrial Engineering Studen. LOLS!!

[jellymarrow13]

like the video but awful choice of music!!!!!!!!!!!!!!!!!!!! Completely ruins the video's potential.

[pureGAGA]

it would be bad if you held one of those then it sliped out of your hand and hit the floor

[friskytom100]

Dan rocks!

[sothim]

Funny, i maintained/worked on the software for that machine (manual EVG620). Nice to see you having fun with it :-)

[ijohannes1]

Hehehehe...

Nice video, and love your sense of humour too!!

[maniclard]

I think the photomask is made from electron beam lithography - this is too expensive and slow to do on each chip

[carlbatt]

That is not correct. These masks are made with something called a 'pattern generator' which is a direct write instrument. The cost of the mask is significant but this is the process used for a large majority of microelectronics.

CAB

[orlyyarlynowai]

@carlbatt Isn't e-beam lithography also considered direct write? How is your pattern generator making the patterns on the masks, is it a laser direct write?

[shahainhigh]

annoying music stupid

[t850]

...I only have one question...just how do they make the photomask...with laser...???...I just can't imagine billion's of "transistor pictures" on a single photomask...wouldn't the photomask be too fragile...or is it made bigger, and then the " print " is shrunken with a lense while woofer is being exposed

[bernithegreat]

state of the art is to use an ebeam writer and write the mask at 4x magnification. during wafer imaging the image is then reduced down to target size

[t850]

...oh I see...thank you very much for explanation...:D

[Grak70]

You only have to write the mask once. And the image is only written in a thin film of chrome on top of a thick quartz plate. The quartz is completely transparent and provides physical support for the chrome mask.

[boguzz]

you don't use a single photomask for the entire circuit. There are lot's of steps to do for creating an integrated circuit: cleaning, implants, diffusions, oxidations.... And you're wright, masks are made using laser beam and some special materials by following a computer design.

[t850]

...now it all makes sence...:D

[knives01ng]

i used to do this @ texas instruments in tucson, az.

[brianmenendez]

they need to dump this stupid background music

[ThePissedOffAtheist]

Destroying potentially interesting videos with annoying and irrelevant background music is the M.O. of any good YouTuber. Don't you know that?

[SCHWaZ317]

WOW ...... EZ to understand

[ghostsoflakeshore]

The wafer fabrication methods shown in this video are ancient. However, this was filmed in an r&d/teaching facility. Modern manufacturing facilities are very different. The photomask (reticle) and wafer (substrate) usually never come in contact with human hands and are automatically loaded and aligned to one another.

[sothim]

You said it yourself, it's an r&d facility and a Demo video :).

However it's not that different, in many cases the process is quite the same. Of course when you goto Intel its much more automated and different level of sophistication.

But you can put a robot beside the machine and put in a motorized stage, load the mask (manually :-) ) and run your high-throughput production (with the same software).

Actually some 4 years ago, ST.com used such setup in product line.

[zloben9000]

cool dude.... VERY COOL

Since its that simple,

i'll try to make a CPU on my own .. wish me LUCK

:-)

[natasha16pinto]

great , understandable,

[kjlm419]

Cool video. But I would think Cornell would know better, no touching wafers and where is your facemask??  Dude you need to watch the spit video! Your mask has got to be filthy, tons of defects! Way bigger than a nanometer.