Step 55.  Metal 2 litho

 

 

 

 

Step

 

Process

Date

Operator

 

55.1

 

 

Std. DUV litho with BARC
ASML: mask: Metal2, 21mJ, -0.4um focus
Hard bake: UVBAKE

Note: ASML PM marks were not detectable. They had to be cleared before the litho step: expose the die above the PM marks followed by Al wet etch

03/31/05

Horvath