Specific Process Knowledge/Lithography/Aligners/Aligner: Maskless 03 processing: Difference between revisions
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'''Quality''' mode is used for optimal resolution and minimum stripe stitching effects. | '''Quality''' mode is used for optimal resolution and minimum stripe stitching effects. | ||
In the high quality mode, an area of the pattern is exposed by 5 stripes, each 500µm wide and exposing a fifth of the dose. At the same time, sub-pixel interpolation is applied, yielding an address grid size of 100nm. | In the high quality mode, an area of the pattern is exposed by 5 stripes, each 500µm wide and exposing a fifth of the dose. At the same time, sub-pixel interpolation is applied, yielding an address grid size of 100nm. | ||
'''Fast''' mode is used for maximum exposure speed. | '''Fast''' mode is used for maximum exposure speed. | ||
In the fast mode, each area of the pattern is exposed by 2 stripes only. This effectively cuts the exposure time in half, but also increases the size of the address grid in the X-direction to 250nm. Due to less averaging of non-uniformities, stitching effects will be more prominent in this mode. | |||
In the fast mode, each area of the pattern is exposed by 2 stripes only. This effectively cuts the exposure time in half, but also increases the size of the address grid in the X-direction to 250nm. This means that alignment will be less accurate in fast mode. Due to less averaging of non-uniformities, stitching effects will be more prominent in this mode. | |||