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AMD will use 45nm chips in 2008 - Page 2

post #11 of 14
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Originally Posted by adam144 View Post
What the hell is immersion lithography?
The tribal dance of the native peoples of Zimbabwe. Its mysterious power can be attributed to the sharpened candy canes that are used to spear the head of magical elves from whom they stole this power. AMD ate the hearts of several zimbabweans and bred with their women. Now they too have learned the secret of 45nm.
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post #12 of 14
Quote:
Originally Posted by LembasBread View Post
The tribal dance of the native peoples of Zimbabwe. Its mysterious power can be attributed to the sharpened candy canes that are used to spear the head of magical elves from whom they stole this power. AMD ate the hearts of several zimbabweans and bred with their women. Now they too have learned the secret of 45nm.



post #13 of 14
Yup... those guys with their OLPC laptops!

Immersion lithography is a technique for making really really small process CPUs. CPUs are made traditionally by using a laser to etch the CPU design onto the silicon. The problem with this is that as the manufacturing process gets smaller and smaller, the wavelength of the laser has to get smaller and smaller as well. At a certain point, the wavelength of the laser is so small that it is hard to focus the laser onto the silicon. The wavelength is also so small that the air molecules between the laser and silicon distort the wavelength and ruins the design. Immersion lithography uses a fluid to fill the gap between the laser and silicon to better focus the laser and prevent any distortions.

This is as far as I know about immersion lithography. Others feel free to chime in!
    
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post #14 of 14
Quote:
Originally Posted by Cheetos316 View Post
Yup... those guys with their OLPC laptops!

Immersion lithography is a technique for making really really small process CPUs. CPUs are made traditionally by using a laser to etch the CPU design onto the silicon. The problem with this is that as the manufacturing process gets smaller and smaller, the wavelength of the laser has to get smaller and smaller as well. At a certain point, the wavelength of the laser is so small that it is hard to focus the laser onto the silicon. The wavelength is also so small that the air molecules between the laser and silicon distort the wavelength and ruins the design. Immersion lithography uses a fluid to fill the gap between the laser and silicon to better focus the laser and prevent any distortions.

This is as far as I know about immersion lithography. Others feel free to chime in!
Pretty much hit the nail right on the head. It allows better focus of the beam and also prevents any dust from settling on the silicon - which is a big cause of defective chips.
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